avcodec/dnxhdenc: use av_malloc_array()
[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   --disable-vda            disable VDA code [autodetect]
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-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316
317 Optimization options (experts only):
318   --disable-asm            disable all assembler optimizations
319   --disable-altivec        disable AltiVec optimizations
320   --disable-amd3dnow       disable 3DNow! optimizations
321   --disable-amd3dnowext    disable 3DNow! extended optimizations
322   --disable-mmx            disable MMX optimizations
323   --disable-mmxext         disable MMXEXT optimizations
324   --disable-sse            disable SSE optimizations
325   --disable-sse2           disable SSE2 optimizations
326   --disable-sse3           disable SSE3 optimizations
327   --disable-ssse3          disable SSSE3 optimizations
328   --disable-sse4           disable SSE4 optimizations
329   --disable-sse42          disable SSE4.2 optimizations
330   --disable-avx            disable AVX optimizations
331   --disable-xop            disable XOP optimizations
332   --disable-fma3           disable FMA3 optimizations
333   --disable-fma4           disable FMA4 optimizations
334   --disable-avx2           disable AVX2 optimizations
335   --disable-armv5te        disable armv5te optimizations
336   --disable-armv6          disable armv6 optimizations
337   --disable-armv6t2        disable armv6t2 optimizations
338   --disable-vfp            disable VFP optimizations
339   --disable-neon           disable NEON optimizations
340   --disable-inline-asm     disable use of inline assembler
341   --disable-yasm           disable use of yasm assembler
342   --disable-mips32r2       disable MIPS32R2 optimizations
343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
345   --disable-mipsfpu        disable floating point MIPS optimizations
346   --disable-fast-unaligned consider unaligned accesses slow
347
348 Developer options (useful when working on FFmpeg itself):
349   --disable-debug          disable debugging symbols
350   --enable-debug=LEVEL     set the debug level [$debuglevel]
351   --disable-optimizations  disable compiler optimizations
352   --enable-extra-warnings  enable more compiler warnings
353   --disable-stripping      disable stripping of executables and shared libraries
354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
355                            2 causes a slowdown at runtime.
356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
358                            leaks and errors, using the specified valgrind binary.
359                            Cannot be combined with --target-exec
360   --enable-ftrapv          Trap arithmetic overflows
361   --samples=PATH           location of test samples for FATE, if not set use
362                            \$FATE_SAMPLES at make invocation time.
363   --enable-neon-clobber-test check NEON registers for clobbering (should be
364                            used only for debugging purposes)
365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
366                            should be used only for debugging purposes)
367   --enable-random          randomly enable/disable components
368   --disable-random
369   --enable-random=LIST     randomly enable/disable specific components or
370   --disable-random=LIST    component groups. LIST is a comma-separated list
371                            of NAME[:PROB] entries where NAME is a component
372                            (group) and PROB the probability associated with
373                            NAME (default 0.5).
374   --random-seed=VALUE      seed value for --enable/disable-random
375
376 NOTE: Object files are built at the place where configure is launched.
377 EOF
378   exit 0
379 }
380
381 quotes='""'
382
383 log(){
384     echo "$@" >> $logfile
385 }
386
387 log_file(){
388     log BEGIN $1
389     pr -n -t $1 >> $logfile
390     log END $1
391 }
392
393 echolog(){
394     log "$@"
395     echo "$@"
396 }
397
398 warn(){
399     log "WARNING: $*"
400     WARNINGS="${WARNINGS}WARNING: $*\n"
401 }
402
403 die(){
404     echolog "$@"
405     cat <<EOF
406
407 If you think configure made a mistake, make sure you are using the latest
408 version from Git.  If the latest version fails, report the problem to the
409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
410 EOF
411     if disabled logging; then
412         cat <<EOF
413 Rerun configure with logging enabled (do not use --disable-logging), and
414 include the log this produces with your report.
415 EOF
416     else
417         cat <<EOF
418 Include the log file "$logfile" produced by configure as this will help
419 solving the problem.
420 EOF
421     fi
422     exit 1
423 }
424
425 # Avoid locale weirdness, besides we really just want to translate ASCII.
426 toupper(){
427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
428 }
429
430 tolower(){
431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
432 }
433
434 c_escape(){
435     echo "$*" | sed 's/["\\]/\\\0/g'
436 }
437
438 sh_quote(){
439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
441     echo "$v"
442 }
443
444 cleanws(){
445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
446 }
447
448 filter(){
449     pat=$1
450     shift
451     for v; do
452         eval "case $v in $pat) echo $v ;; esac"
453     done
454 }
455
456 filter_out(){
457     pat=$1
458     shift
459     for v; do
460         eval "case $v in $pat) ;; *) echo $v ;; esac"
461     done
462 }
463
464 map(){
465     m=$1
466     shift
467     for v; do eval $m; done
468 }
469
470 add_suffix(){
471     suffix=$1
472     shift
473     for v; do echo ${v}${suffix}; done
474 }
475
476 set_all(){
477     value=$1
478     shift
479     for var in $*; do
480         eval $var=$value
481     done
482 }
483
484 set_weak(){
485     value=$1
486     shift
487     for var; do
488         eval : \${$var:=$value}
489     done
490 }
491
492 sanitize_var_name(){
493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
494 }
495
496 set_safe(){
497     var=$1
498     shift
499     eval $(sanitize_var_name "$var")='$*'
500 }
501
502 get_safe(){
503     eval echo \$$(sanitize_var_name "$1")
504 }
505
506 pushvar(){
507     for pvar in $*; do
508         eval level=\${${pvar}_level:=0}
509         eval ${pvar}_${level}="\$$pvar"
510         eval ${pvar}_level=$(($level+1))
511     done
512 }
513
514 popvar(){
515     for pvar in $*; do
516         eval level=\${${pvar}_level:-0}
517         test $level = 0 && continue
518         eval level=$(($level-1))
519         eval $pvar="\${${pvar}_${level}}"
520         eval ${pvar}_level=$level
521         eval unset ${pvar}_${level}
522     done
523 }
524
525 enable(){
526     set_all yes $*
527 }
528
529 disable(){
530     set_all no $*
531 }
532
533 enable_weak(){
534     set_weak yes $*
535 }
536
537 disable_weak(){
538     set_weak no $*
539 }
540
541 enable_safe(){
542     for var; do
543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
544     done
545 }
546
547 disable_safe(){
548     for var; do
549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
550     done
551 }
552
553 do_enable_deep(){
554     for var; do
555         enabled $var && continue
556         eval sel="\$${var}_select"
557         eval sgs="\$${var}_suggest"
558         pushvar var sgs
559         enable_deep $sel
560         popvar sgs
561         enable_deep_weak $sgs
562         popvar var
563     done
564 }
565
566 enable_deep(){
567     do_enable_deep $*
568     enable $*
569 }
570
571 enable_deep_weak(){
572     for var; do
573         disabled $var && continue
574         pushvar var
575         do_enable_deep $var
576         popvar var
577         enable_weak $var
578     done
579 }
580
581 enabled(){
582     test "${1#!}" = "$1" && op== || op=!=
583     eval test "x\$${1#!}" $op "xyes"
584 }
585
586 disabled(){
587     test "${1#!}" = "$1" && op== || op=!=
588     eval test "x\$${1#!}" $op "xno"
589 }
590
591 enabled_all(){
592     for opt; do
593         enabled $opt || return 1
594     done
595 }
596
597 disabled_all(){
598     for opt; do
599         disabled $opt || return 1
600     done
601 }
602
603 enabled_any(){
604     for opt; do
605         enabled $opt && return 0
606     done
607 }
608
609 disabled_any(){
610     for opt; do
611         disabled $opt && return 0
612     done
613     return 1
614 }
615
616 set_default(){
617     for opt; do
618         eval : \${$opt:=\$${opt}_default}
619     done
620 }
621
622 is_in(){
623     value=$1
624     shift
625     for var in $*; do
626         [ $var = $value ] && return 0
627     done
628     return 1
629 }
630
631 do_check_deps(){
632     for cfg; do
633         cfg="${cfg#!}"
634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
635         disabled ${cfg}_checking && continue
636         enable ${cfg}_checking
637         append allopts $cfg
638
639         eval dep_all="\$${cfg}_deps"
640         eval dep_any="\$${cfg}_deps_any"
641         eval dep_sel="\$${cfg}_select"
642         eval dep_sgs="\$${cfg}_suggest"
643         eval dep_ifa="\$${cfg}_if"
644         eval dep_ifn="\$${cfg}_if_any"
645
646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649
650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
652         enabled_all  $dep_all || disable $cfg
653         enabled_any  $dep_any || disable $cfg
654         disabled_any $dep_sel && disable $cfg
655
656         if enabled $cfg; then
657             enable_deep $dep_sel
658             enable_deep_weak $dep_sgs
659         fi
660
661         disable ${cfg}_checking
662     done
663 }
664
665 check_deps(){
666     unset allopts
667
668     do_check_deps "$@"
669
670     for cfg in $allopts; do
671         enabled $cfg || continue
672         eval dep_extralibs="\$${cfg}_extralibs"
673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
674     done
675 }
676
677 print_config(){
678     pfx=$1
679     files=$2
680     shift 2
681     map 'eval echo "$v \${$v:-no}"' "$@" |
682     awk "BEGIN { split(\"$files\", files) }
683         {
684             c = \"$pfx\" toupper(\$1);
685             v = \$2;
686             sub(/yes/, 1, v);
687             sub(/no/,  0, v);
688             for (f in files) {
689                 file = files[f];
690                 if (file ~ /\\.h\$/) {
691                     printf(\"#define %s %d\\n\", c, v) >>file;
692                 } else if (file ~ /\\.asm\$/) {
693                     printf(\"%%define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.mak\$/) {
695                     n = -v ? \"\" : \"!\";
696                     printf(\"%s%s=yes\\n\", n, c) >>file;
697                 } else if (file ~ /\\.texi\$/) {
698                     pre = -v ? \"\" : \"@c \";
699                     yesno = \$2;
700                     c2 = tolower(c);
701                     gsub(/_/, \"-\", c2);
702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
703                 }
704             }
705         }"
706 }
707
708 print_enabled(){
709     suf=$1
710     shift
711     for v; do
712         enabled $v && printf "%s\n" ${v%$suf};
713     done
714 }
715
716 append(){
717     var=$1
718     shift
719     eval "$var=\"\$$var $*\""
720 }
721
722 prepend(){
723     var=$1
724     shift
725     eval "$var=\"$* \$$var\""
726 }
727
728 add_cppflags(){
729     append CPPFLAGS "$@"
730 }
731
732 add_cflags(){
733     append CFLAGS $($cflags_filter "$@")
734 }
735
736 add_cxxflags(){
737     append CXXFLAGS $($cflags_filter "$@")
738 }
739
740 add_asflags(){
741     append ASFLAGS $($asflags_filter "$@")
742 }
743
744 add_ldflags(){
745     append LDFLAGS $($ldflags_filter "$@")
746 }
747
748 add_stripflags(){
749     append ASMSTRIPFLAGS "$@"
750 }
751
752 add_extralibs(){
753     prepend extralibs $($ldflags_filter "$@")
754 }
755
756 add_host_cppflags(){
757     append host_cppflags "$@"
758 }
759
760 add_host_cflags(){
761     append host_cflags $($host_cflags_filter "$@")
762 }
763
764 add_host_ldflags(){
765     append host_ldflags $($host_ldflags_filter "$@")
766 }
767
768 add_compat(){
769     append compat_objs $1
770     shift
771     map 'add_cppflags -D$v' "$@"
772 }
773
774 check_cmd(){
775     log "$@"
776     "$@" >> $logfile 2>&1
777 }
778
779 check_stat(){
780     log check_stat "$@"
781     stat "$1" >> $logfile 2>&1
782 }
783
784 cc_o(){
785     eval printf '%s\\n' $CC_O
786 }
787
788 cc_e(){
789     eval printf '%s\\n' $CC_E
790 }
791
792 check_cc(){
793     log check_cc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cxx(){
800     log check_cxx "$@"
801     cat > $TMPCPP
802     log_file $TMPCPP
803     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
804 }
805
806 check_oc(){
807     log check_oc "$@"
808     cat > $TMPM
809     log_file $TMPM
810     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
811 }
812
813 check_cpp(){
814     log check_cpp "$@"
815     cat > $TMPC
816     log_file $TMPC
817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
818 }
819
820 as_o(){
821     eval printf '%s\\n' $AS_O
822 }
823
824 check_as(){
825     log check_as "$@"
826     cat > $TMPS
827     log_file $TMPS
828     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
829 }
830
831 check_inline_asm(){
832     log check_inline_asm "$@"
833     name="$1"
834     code="$2"
835     shift 2
836     disable $name
837     check_cc "$@" <<EOF && enable $name
838 void foo(void){ __asm__ volatile($code); }
839 EOF
840 }
841
842 check_insn(){
843     log check_insn "$@"
844     check_inline_asm ${1}_inline "\"$2\""
845     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
846 }
847
848 check_yasm(){
849     log check_yasm "$@"
850     echo "$1" > $TMPS
851     log_file $TMPS
852     shift 1
853     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
854 }
855
856 ld_o(){
857     eval printf '%s\\n' $LD_O
858 }
859
860 check_ld(){
861     log check_ld "$@"
862     type=$1
863     shift 1
864     flags=$(filter_out '-l*|*.so' $@)
865     libs=$(filter '-l*|*.so' $@)
866     check_$type $($cflags_filter $flags) || return
867     flags=$($ldflags_filter $flags)
868     libs=$($ldflags_filter $libs)
869     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
870 }
871
872 print_include(){
873     hdr=$1
874     test "${hdr%.h}" = "${hdr}" &&
875         echo "#include $hdr"    ||
876         echo "#include <$hdr>"
877 }
878
879 check_code(){
880     log check_code "$@"
881     check=$1
882     headers=$2
883     code=$3
884     shift 3
885     {
886         for hdr in $headers; do
887             print_include $hdr
888         done
889         echo "int main(void) { $code; return 0; }"
890     } | check_$check "$@"
891 }
892
893 check_cppflags(){
894     log check_cppflags "$@"
895     check_cc "$@" <<EOF && append CPPFLAGS "$@"
896 int x;
897 EOF
898 }
899
900 test_cflags(){
901     log test_cflags "$@"
902     set -- $($cflags_filter "$@")
903     check_cc "$@" <<EOF
904 int x;
905 EOF
906 }
907
908 check_cflags(){
909     log check_cflags "$@"
910     test_cflags "$@" && add_cflags "$@"
911 }
912
913 check_cxxflags(){
914     log check_cxxflags "$@"
915     set -- $($cflags_filter "$@")
916     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
917 int x;
918 EOF
919 }
920
921 test_ldflags(){
922     log test_ldflags "$@"
923     check_ld "cc" "$@" <<EOF
924 int main(void){ return 0; }
925 EOF
926 }
927
928 check_ldflags(){
929     log check_ldflags "$@"
930     test_ldflags "$@" && add_ldflags "$@"
931 }
932
933 test_stripflags(){
934     log test_stripflags "$@"
935     # call check_cc to get a fresh TMPO
936     check_cc <<EOF
937 int main(void) { return 0; }
938 EOF
939     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
940 }
941
942 check_stripflags(){
943     log check_stripflags "$@"
944     test_stripflags "$@" && add_stripflags "$@"
945 }
946
947 check_header(){
948     log check_header "$@"
949     header=$1
950     shift
951     disable_safe $header
952     check_cpp "$@" <<EOF && enable_safe $header
953 #include <$header>
954 int x;
955 EOF
956 }
957
958 check_header_oc(){
959     log check_header_oc "$@"
960     rm -f -- "$TMPO"
961     header=$1
962     shift
963     disable_safe $header
964     {
965        echo "#include <$header>"
966        echo "int main(void) { return 0; }"
967     } | check_oc && check_stat "$TMPO" && enable_safe $headers
968 }
969
970 check_func(){
971     log check_func "$@"
972     func=$1
973     shift
974     disable $func
975     check_ld "cc" "$@" <<EOF && enable $func
976 extern int $func();
977 int main(void){ $func(); }
978 EOF
979 }
980
981 check_mathfunc(){
982     log check_mathfunc "$@"
983     func=$1
984     narg=$2
985     shift 2
986     test $narg = 2 && args="f, g" || args="f"
987     disable $func
988     check_ld "cc" "$@" <<EOF && enable $func
989 #include <math.h>
990 float foo(float f, float g) { return $func($args); }
991 int main(void){ return (int) foo; }
992 EOF
993 }
994
995 check_func_headers(){
996     log check_func_headers "$@"
997     headers=$1
998     funcs=$2
999     shift 2
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         for func in $funcs; do
1005             echo "long check_$func(void) { return (long) $func; }"
1006         done
1007         echo "int main(void) { return 0; }"
1008     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1009 }
1010
1011 check_class_headers_cpp(){
1012     log check_class_headers_cpp "$@"
1013     headers=$1
1014     classes=$2
1015     shift 2
1016     {
1017         for hdr in $headers; do
1018             echo "#include <$hdr>"
1019         done
1020         echo "int main(void) { "
1021         i=1
1022         for class in $classes; do
1023             echo "$class obj$i;"
1024             i=$(expr $i + 1)
1025         done
1026         echo "return 0; }"
1027     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1028 }
1029
1030 check_cpp_condition(){
1031     log check_cpp_condition "$@"
1032     header=$1
1033     condition=$2
1034     shift 2
1035     check_cpp "$@" <<EOF
1036 #include <$header>
1037 #if !($condition)
1038 #error "unsatisfied condition: $condition"
1039 #endif
1040 EOF
1041 }
1042
1043 check_lib(){
1044     log check_lib "$@"
1045     header="$1"
1046     func="$2"
1047     shift 2
1048     check_header $header && check_func $func "$@" && add_extralibs "$@"
1049 }
1050
1051 check_lib2(){
1052     log check_lib2 "$@"
1053     headers="$1"
1054     funcs="$2"
1055     shift 2
1056     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1057 }
1058
1059 check_lib_cpp(){
1060     log check_lib_cpp "$@"
1061     headers="$1"
1062     classes="$2"
1063     shift 2
1064     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1065 }
1066
1067 check_pkg_config(){
1068     log check_pkg_config "$@"
1069     pkgandversion="$1"
1070     pkg="${1%% *}"
1071     headers="$2"
1072     funcs="$3"
1073     shift 3
1074     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1075     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1076     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1077     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1078         set_safe ${pkg}_cflags $pkg_cflags   &&
1079         set_safe ${pkg}_libs   $pkg_libs
1080 }
1081
1082 check_exec(){
1083     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1084 }
1085
1086 check_exec_crash(){
1087     code=$(cat)
1088
1089     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1090     # are safe but may not be available everywhere.  Thus we use
1091     # raise(SIGTERM) instead.  The check is run in a subshell so we
1092     # can redirect the "Terminated" message from the shell.  SIGBUS
1093     # is not defined by standard C so it is used conditionally.
1094
1095     (check_exec "$@") >> $logfile 2>&1 <<EOF
1096 #include <signal.h>
1097 static void sighandler(int sig){
1098     raise(SIGTERM);
1099 }
1100 int foo(void){
1101     $code
1102 }
1103 int (*func_ptr)(void) = foo;
1104 int main(void){
1105     signal(SIGILL, sighandler);
1106     signal(SIGFPE, sighandler);
1107     signal(SIGSEGV, sighandler);
1108 #ifdef SIGBUS
1109     signal(SIGBUS, sighandler);
1110 #endif
1111     return func_ptr();
1112 }
1113 EOF
1114 }
1115
1116 check_type(){
1117     log check_type "$@"
1118     headers=$1
1119     type=$2
1120     shift 2
1121     disable_safe "$type"
1122     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1123 }
1124
1125 check_struct(){
1126     log check_struct "$@"
1127     headers=$1
1128     struct=$2
1129     member=$3
1130     shift 3
1131     disable_safe "${struct}_${member}"
1132     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1133         enable_safe "${struct}_${member}"
1134 }
1135
1136 check_builtin(){
1137     log check_builtin "$@"
1138     name=$1
1139     headers=$2
1140     builtin=$3
1141     shift 3
1142     disable "$name"
1143     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1144 }
1145
1146 check_compile_assert(){
1147     log check_compile_assert "$@"
1148     name=$1
1149     headers=$2
1150     condition=$3
1151     shift 3
1152     disable "$name"
1153     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1154 }
1155
1156 require(){
1157     name="$1"
1158     header="$2"
1159     func="$3"
1160     shift 3
1161     check_lib $header $func "$@" || die "ERROR: $name not found"
1162 }
1163
1164 require2(){
1165     name="$1"
1166     headers="$2"
1167     func="$3"
1168     shift 3
1169     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1170 }
1171
1172 require_cpp(){
1173     name="$1"
1174     headers="$2"
1175     classes="$3"
1176     shift 3
1177     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1178 }
1179
1180 require_pkg_config(){
1181     pkg="$1"
1182     check_pkg_config "$@" || die "ERROR: $pkg not found"
1183     add_cflags    $(get_safe ${pkg}_cflags)
1184     add_extralibs $(get_safe ${pkg}_libs)
1185 }
1186
1187 require_libfreetype(){
1188     log require_libfreetype "$@"
1189     pkg="freetype2"
1190     check_cmd $pkg_config --exists --print-errors $pkg \
1191       || die "ERROR: $pkg not found"
1192     pkg_cflags=$($pkg_config --cflags $pkg)
1193     pkg_libs=$($pkg_config --libs $pkg)
1194     {
1195         echo "#include <ft2build.h>"
1196         echo "#include FT_FREETYPE_H"
1197         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1198         echo "int main(void) { return 0; }"
1199     } | check_ld "cc" $pkg_cflags $pkg_libs \
1200       && set_safe ${pkg}_cflags $pkg_cflags \
1201       && set_safe ${pkg}_libs   $pkg_libs \
1202       || die "ERROR: $pkg not found"
1203     add_cflags    $(get_safe ${pkg}_cflags)
1204     add_extralibs $(get_safe ${pkg}_libs)
1205 }
1206
1207 hostcc_e(){
1208     eval printf '%s\\n' $HOSTCC_E
1209 }
1210
1211 hostcc_o(){
1212     eval printf '%s\\n' $HOSTCC_O
1213 }
1214
1215 check_host_cc(){
1216     log check_host_cc "$@"
1217     cat > $TMPC
1218     log_file $TMPC
1219     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1220 }
1221
1222 check_host_cpp(){
1223     log check_host_cpp "$@"
1224     cat > $TMPC
1225     log_file $TMPC
1226     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1227 }
1228
1229 check_host_cppflags(){
1230     log check_host_cppflags "$@"
1231     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1232 int x;
1233 EOF
1234 }
1235
1236 check_host_cflags(){
1237     log check_host_cflags "$@"
1238     set -- $($host_cflags_filter "$@")
1239     check_host_cc "$@" <<EOF && append host_cflags "$@"
1240 int x;
1241 EOF
1242 }
1243
1244 check_host_cpp_condition(){
1245     log check_host_cpp_condition "$@"
1246     header=$1
1247     condition=$2
1248     shift 2
1249     check_host_cpp "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 apply(){
1258     file=$1
1259     shift
1260     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1261 }
1262
1263 cp_if_changed(){
1264     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1265     mkdir -p "$(dirname $2)"
1266     $cp_f "$1" "$2"
1267 }
1268
1269 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1270 # system-dependent things.
1271
1272 COMPONENT_LIST="
1273     bsfs
1274     decoders
1275     demuxers
1276     encoders
1277     filters
1278     hwaccels
1279     indevs
1280     muxers
1281     outdevs
1282     parsers
1283     protocols
1284 "
1285
1286 EXAMPLE_LIST="
1287     avio_reading_example
1288     avcodec_example
1289     demuxing_decoding_example
1290     filter_audio_example
1291     filtering_audio_example
1292     filtering_video_example
1293     metadata_example
1294     muxing_example
1295     remuxing_example
1296     resampling_audio_example
1297     scaling_video_example
1298     transcode_aac_example
1299     transcoding_example
1300 "
1301
1302 EXTERNAL_LIBRARY_LIST="
1303     avisynth
1304     bzlib
1305     crystalhd
1306     decklink
1307     fontconfig
1308     frei0r
1309     gnutls
1310     iconv
1311     ladspa
1312     libaacplus
1313     libass
1314     libbluray
1315     libcaca
1316     libcdio
1317     libcelt
1318     libdc1394
1319     libfaac
1320     libfdk_aac
1321     libflite
1322     libfreetype
1323     libgme
1324     libgsm
1325     libiec61883
1326     libilbc
1327     libmodplug
1328     libmp3lame
1329     libnut
1330     libopencore_amrnb
1331     libopencore_amrwb
1332     libopencv
1333     libopenjpeg
1334     libopus
1335     libpulse
1336     libquvi
1337     librtmp
1338     libschroedinger
1339     libshine
1340     libsoxr
1341     libspeex
1342     libssh
1343     libstagefright_h264
1344     libtheora
1345     libtwolame
1346     libutvideo
1347     libv4l2
1348     libvidstab
1349     libvo_aacenc
1350     libvo_amrwbenc
1351     libvorbis
1352     libvpx
1353     libwavpack
1354     libwebp
1355     libx264
1356     libx265
1357     libxavs
1358     libxvid
1359     libzmq
1360     libzvbi
1361     openal
1362     opencl
1363     opengl
1364     openssl
1365     x11grab
1366     xlib
1367     zlib
1368 "
1369
1370 DOCUMENT_LIST="
1371     doc
1372     htmlpages
1373     manpages
1374     podpages
1375     txtpages
1376 "
1377
1378 FEATURE_LIST="
1379     ftrapv
1380     gray
1381     hardcoded_tables
1382     runtime_cpudetect
1383     safe_bitstream_reader
1384     shared
1385     small
1386     sram
1387     static
1388     swscale_alpha
1389 "
1390
1391 HWACCEL_LIST="
1392     dxva2
1393     vaapi
1394     vda
1395     vdpau
1396     xvmc
1397 "
1398
1399 LIBRARY_LIST="
1400     avcodec
1401     avdevice
1402     avfilter
1403     avformat
1404     avresample
1405     avutil
1406     postproc
1407     swresample
1408     swscale
1409 "
1410
1411 LICENSE_LIST="
1412     gpl
1413     nonfree
1414     version3
1415 "
1416
1417 PROGRAM_LIST="
1418     ffplay
1419     ffprobe
1420     ffserver
1421     ffmpeg
1422 "
1423
1424 SUBSYSTEM_LIST="
1425     dct
1426     dwt
1427     error_resilience
1428     fast_unaligned
1429     fft
1430     lsp
1431     lzo
1432     mdct
1433     network
1434     rdft
1435 "
1436
1437 CONFIG_LIST="
1438     $COMPONENT_LIST
1439     $DOCUMENT_LIST
1440     $EXAMPLE_LIST
1441     $EXTERNAL_LIBRARY_LIST
1442     $FEATURE_LIST
1443     $HWACCEL_LIST
1444     $LICENSE_LIST
1445     $LIBRARY_LIST
1446     $PROGRAM_LIST
1447     $SUBSYSTEM_LIST
1448     incompatible_libav_abi
1449     incompatible_fork_abi
1450     memalign_hack
1451     memory_poisoning
1452     neon_clobber_test
1453     pic
1454     pod2man
1455     raise_major
1456     thumb
1457     xmm_clobber_test
1458 "
1459
1460 THREADS_LIST="
1461     pthreads
1462     os2threads
1463     w32threads
1464 "
1465
1466 ATOMICS_LIST="
1467     atomics_gcc
1468     atomics_suncc
1469     atomics_win32
1470 "
1471
1472 ARCH_LIST="
1473     aarch64
1474     alpha
1475     arm
1476     avr32
1477     avr32_ap
1478     avr32_uc
1479     bfin
1480     ia64
1481     m68k
1482     mips
1483     mips64
1484     parisc
1485     ppc
1486     ppc64
1487     s390
1488     sh4
1489     sparc
1490     sparc64
1491     tilegx
1492     tilepro
1493     tomi
1494     x86
1495     x86_32
1496     x86_64
1497 "
1498
1499 ARCH_EXT_LIST_ARM="
1500     armv5te
1501     armv6
1502     armv6t2
1503     armv8
1504     neon
1505     vfp
1506     vfpv3
1507 "
1508
1509 ARCH_EXT_LIST_MIPS="
1510     mipsfpu
1511     mips32r2
1512     mipsdspr1
1513     mipsdspr2
1514 "
1515
1516 ARCH_EXT_LIST_X86_SIMD="
1517     amd3dnow
1518     amd3dnowext
1519     avx
1520     avx2
1521     fma3
1522     fma4
1523     mmx
1524     mmxext
1525     sse
1526     sse2
1527     sse3
1528     sse4
1529     sse42
1530     ssse3
1531     xop
1532 "
1533
1534 ARCH_EXT_LIST_PPC="
1535     altivec
1536     dcbzl
1537     ldbrx
1538     ppc4xx
1539 "
1540
1541 ARCH_EXT_LIST_X86="
1542     $ARCH_EXT_LIST_X86_SIMD
1543     cpunop
1544     i686
1545 "
1546
1547 ARCH_EXT_LIST="
1548     $ARCH_EXT_LIST_ARM
1549     $ARCH_EXT_LIST_PPC
1550     $ARCH_EXT_LIST_X86
1551     $ARCH_EXT_LIST_MIPS
1552     loongson
1553 "
1554
1555 ARCH_FEATURES="
1556     aligned_stack
1557     fast_64bit
1558     fast_clz
1559     fast_cmov
1560     local_aligned_8
1561     local_aligned_16
1562 "
1563
1564 BUILTIN_LIST="
1565     atomic_cas_ptr
1566     machine_rw_barrier
1567     MemoryBarrier
1568     mm_empty
1569     rdtsc
1570     sarestart
1571     sync_val_compare_and_swap
1572 "
1573 HAVE_LIST_CMDLINE="
1574     inline_asm
1575     symver
1576     yasm
1577 "
1578
1579 HAVE_LIST_PUB="
1580     bigendian
1581     fast_unaligned
1582     incompatible_libav_abi
1583     incompatible_fork_abi
1584 "
1585
1586 HEADERS_LIST="
1587     alsa_asoundlib_h
1588     altivec_h
1589     arpa_inet_h
1590     asm_types_h
1591     cdio_paranoia_h
1592     cdio_paranoia_paranoia_h
1593     CL_cl_h
1594     dev_bktr_ioctl_bt848_h
1595     dev_bktr_ioctl_meteor_h
1596     dev_ic_bt8xx_h
1597     dev_video_bktr_ioctl_bt848_h
1598     dev_video_meteor_ioctl_meteor_h
1599     direct_h
1600     dlfcn_h
1601     dxva_h
1602     ES2_gl_h
1603     gsm_h
1604     io_h
1605     mach_mach_time_h
1606     machine_ioctl_bt848_h
1607     machine_ioctl_meteor_h
1608     malloc_h
1609     openjpeg_1_5_openjpeg_h
1610     OpenGL_gl3_h
1611     poll_h
1612     sndio_h
1613     soundcard_h
1614     sys_mman_h
1615     sys_param_h
1616     sys_resource_h
1617     sys_select_h
1618     sys_soundcard_h
1619     sys_time_h
1620     sys_un_h
1621     sys_videoio_h
1622     termios_h
1623     unistd_h
1624     windows_h
1625     winsock2_h
1626 "
1627
1628 MATH_FUNCS="
1629     atanf
1630     atan2f
1631     cbrt
1632     cbrtf
1633     cosf
1634     exp2
1635     exp2f
1636     expf
1637     isinf
1638     isnan
1639     ldexpf
1640     llrint
1641     llrintf
1642     log2
1643     log2f
1644     log10f
1645     lrint
1646     lrintf
1647     powf
1648     rint
1649     round
1650     roundf
1651     sinf
1652     trunc
1653     truncf
1654 "
1655
1656 SYSTEM_FUNCS="
1657     access
1658     aligned_malloc
1659     clock_gettime
1660     closesocket
1661     CommandLineToArgvW
1662     CryptGenRandom
1663     dlopen
1664     fcntl
1665     flt_lim
1666     fork
1667     getaddrinfo
1668     gethrtime
1669     getopt
1670     GetProcessAffinityMask
1671     GetProcessMemoryInfo
1672     GetProcessTimes
1673     getrusage
1674     getservbyport
1675     GetSystemTimeAsFileTime
1676     gettimeofday
1677     glob
1678     glXGetProcAddress
1679     inet_aton
1680     isatty
1681     jack_port_get_latency_range
1682     kbhit
1683     localtime_r
1684     lzo1x_999_compress
1685     mach_absolute_time
1686     MapViewOfFile
1687     memalign
1688     mkstemp
1689     mmap
1690     mprotect
1691     nanosleep
1692     PeekNamedPipe
1693     posix_memalign
1694     pthread_cancel
1695     sched_getaffinity
1696     SetConsoleTextAttribute
1697     setmode
1698     setrlimit
1699     Sleep
1700     strerror_r
1701     sysconf
1702     sysctl
1703     usleep
1704     VirtualAlloc
1705     wglGetProcAddress
1706 "
1707
1708 TOOLCHAIN_FEATURES="
1709     asm_mod_q
1710     attribute_may_alias
1711     attribute_packed
1712     ebp_available
1713     ebx_available
1714     gnu_as
1715     gnu_windres
1716     ibm_asm
1717     inline_asm_labels
1718     inline_asm_nonlocal_labels
1719     inline_asm_direct_symbol_refs
1720     pragma_deprecated
1721     rsync_contimeout
1722     symver_asm_label
1723     symver_gnu_asm
1724     vfp_args
1725     xform_asm
1726     xmm_clobbers
1727 "
1728
1729 TYPES_LIST="
1730     socklen_t
1731     struct_addrinfo
1732     struct_group_source_req
1733     struct_ip_mreq_source
1734     struct_ipv6_mreq
1735     struct_pollfd
1736     struct_rusage_ru_maxrss
1737     struct_sctp_event_subscribe
1738     struct_sockaddr_in6
1739     struct_sockaddr_sa_len
1740     struct_sockaddr_storage
1741     struct_stat_st_mtim_tv_nsec
1742     struct_v4l2_frmivalenum_discrete
1743 "
1744
1745 HAVE_LIST="
1746     $ARCH_EXT_LIST
1747     $(add_suffix _external $ARCH_EXT_LIST)
1748     $(add_suffix _inline   $ARCH_EXT_LIST)
1749     $ARCH_FEATURES
1750     $ATOMICS_LIST
1751     $BUILTIN_LIST
1752     $HAVE_LIST_CMDLINE
1753     $HAVE_LIST_PUB
1754     $HEADERS_LIST
1755     $MATH_FUNCS
1756     $SYSTEM_FUNCS
1757     $THREADS_LIST
1758     $TOOLCHAIN_FEATURES
1759     $TYPES_LIST
1760     atomics_native
1761     dos_paths
1762     libc_msvcrt
1763     libdc1394_1
1764     libdc1394_2
1765     makeinfo
1766     perl
1767     pod2man
1768     sdl
1769     texi2html
1770     threads
1771     vdpau_x11
1772     xlib
1773 "
1774
1775 # options emitted with CONFIG_ prefix but not available on the command line
1776 CONFIG_EXTRA="
1777     aandcttables
1778     ac3dsp
1779     audio_frame_queue
1780     cabac
1781     dsputil
1782     exif
1783     frame_thread_encoder
1784     gcrypt
1785     golomb
1786     gplv3
1787     h263dsp
1788     h264chroma
1789     h264dsp
1790     h264pred
1791     h264qpel
1792     hpeldsp
1793     huffman
1794     intrax8
1795     lgplv3
1796     llviddsp
1797     lpc
1798     mpegaudio
1799     mpegaudiodsp
1800     mpegvideo
1801     mpegvideoenc
1802     nettle
1803     rangecoder
1804     riffdec
1805     riffenc
1806     rtpdec
1807     rtpenc_chain
1808     sinewin
1809     tpeldsp
1810     videodsp
1811     vp3dsp
1812 "
1813
1814 CMDLINE_SELECT="
1815     $ARCH_EXT_LIST
1816     $CONFIG_LIST
1817     $HAVE_LIST_CMDLINE
1818     $THREADS_LIST
1819     asm
1820     cross_compile
1821     debug
1822     extra_warnings
1823     logging
1824     lto
1825     optimizations
1826     rpath
1827     stripping
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     assert_level
1847     build_suffix
1848     cc
1849     cpu
1850     cross_prefix
1851     cxx
1852     dep_cc
1853     extra_version
1854     host_cc
1855     host_cflags
1856     host_ld
1857     host_ldflags
1858     host_libs
1859     host_os
1860     install
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     progs_suffix
1869     random_seed
1870     samples
1871     strip
1872     sysinclude
1873     sysroot
1874     target_exec
1875     target_os
1876     target_path
1877     target_samples
1878     tempprefix
1879     toolchain
1880     valgrind
1881     yasmexe
1882 "
1883
1884 CMDLINE_APPEND="
1885     extra_cflags
1886     extra_cxxflags
1887     host_cppflags
1888 "
1889
1890 # code dependency declarations
1891
1892 # architecture extensions
1893
1894 armv5te_deps="arm"
1895 armv6_deps="arm"
1896 armv6t2_deps="arm"
1897 armv8_deps="aarch64"
1898 neon_deps_any="aarch64 arm"
1899 vfp_deps_any="aarch64 arm"
1900 vfpv3_deps="vfp"
1901
1902 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1903
1904 mipsfpu_deps="mips"
1905 mips32r2_deps="mips"
1906 mipsdspr1_deps="mips"
1907 mipsdspr2_deps="mips"
1908
1909 altivec_deps="ppc"
1910 ppc4xx_deps="ppc"
1911
1912 cpunop_deps="i686"
1913 x86_64_select="i686"
1914 x86_64_suggest="fast_cmov"
1915
1916 amd3dnow_deps="mmx"
1917 amd3dnowext_deps="amd3dnow"
1918 i686_deps="x86"
1919 mmx_deps="x86"
1920 mmxext_deps="mmx"
1921 sse_deps="mmxext"
1922 sse2_deps="sse"
1923 sse3_deps="sse2"
1924 ssse3_deps="sse3"
1925 sse4_deps="ssse3"
1926 sse42_deps="sse4"
1927 avx_deps="sse42"
1928 xop_deps="avx"
1929 fma3_deps="avx"
1930 fma4_deps="avx"
1931 avx2_deps="avx"
1932
1933 mmx_external_deps="yasm"
1934 mmx_inline_deps="inline_asm"
1935 mmx_suggest="mmx_external mmx_inline"
1936
1937 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1938     eval dep=\$${ext}_deps
1939     eval ${ext}_external_deps='"${dep}_external"'
1940     eval ${ext}_inline_deps='"${dep}_inline"'
1941     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1942 done
1943
1944 aligned_stack_if_any="aarch64 ppc x86"
1945 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1946 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1947 fast_unaligned_if_any="aarch64 ppc x86"
1948
1949 need_memalign="altivec neon sse"
1950
1951 # system capabilities
1952 log2_deps="!libc_msvcrt"
1953
1954 symver_if_any="symver_asm_label symver_gnu_asm"
1955
1956 # threading support
1957 atomics_gcc_if="sync_val_compare_and_swap"
1958 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1959 atomics_win32_if="MemoryBarrier"
1960 atomics_native_if_any="$ATOMICS_LIST"
1961 w32threads_deps="atomics_native"
1962 threads_if_any="$THREADS_LIST"
1963
1964 # subsystems
1965 dct_select="rdft"
1966 error_resilience_select="dsputil"
1967 frame_thread_encoder_deps="encoders threads"
1968 mdct_select="fft"
1969 rdft_select="fft"
1970 mpegaudio_select="mpegaudiodsp"
1971 mpegaudiodsp_select="dct"
1972 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1973 mpegvideoenc_select="dsputil mpegvideo"
1974
1975 # decoders / encoders
1976 aac_decoder_select="mdct sinewin"
1977 aac_encoder_select="audio_frame_queue mdct sinewin"
1978 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1979 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1980 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1981 ac3_encoder_select="mdct ac3dsp dsputil"
1982 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1983 aic_decoder_select="dsputil golomb"
1984 alac_encoder_select="lpc"
1985 als_decoder_select="dsputil"
1986 amrnb_decoder_select="lsp"
1987 amrwb_decoder_select="lsp"
1988 amv_decoder_select="sp5x_decoder exif"
1989 amv_encoder_select="aandcttables"
1990 ape_decoder_select="dsputil"
1991 asv1_decoder_select="dsputil"
1992 asv1_encoder_select="dsputil"
1993 asv2_decoder_select="dsputil"
1994 asv2_encoder_select="dsputil"
1995 atrac1_decoder_select="mdct sinewin"
1996 atrac3_decoder_select="mdct"
1997 atrac3p_decoder_select="mdct sinewin"
1998 avrn_decoder_select="exif"
1999 bink_decoder_select="dsputil hpeldsp"
2000 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2001 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2002 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2003 cllc_decoder_select="dsputil"
2004 comfortnoise_encoder_select="lpc"
2005 cook_decoder_select="dsputil mdct sinewin"
2006 cscd_decoder_select="lzo"
2007 cscd_decoder_suggest="zlib"
2008 dca_decoder_select="mdct"
2009 dirac_decoder_select="dsputil dwt golomb videodsp"
2010 dnxhd_decoder_select="dsputil"
2011 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2012 dvvideo_decoder_select="dsputil"
2013 dvvideo_encoder_select="dsputil"
2014 dxa_decoder_select="zlib"
2015 eac3_decoder_select="ac3_decoder"
2016 eac3_encoder_select="ac3_encoder"
2017 eamad_decoder_select="aandcttables dsputil mpegvideo"
2018 eatgq_decoder_select="aandcttables"
2019 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2020 exr_decoder_select="zlib"
2021 ffv1_decoder_select="golomb rangecoder"
2022 ffv1_encoder_select="rangecoder"
2023 ffvhuff_decoder_select="huffyuv_decoder"
2024 ffvhuff_encoder_select="huffyuv_encoder"
2025 fic_decoder_select="dsputil golomb"
2026 flac_decoder_select="golomb"
2027 flac_encoder_select="dsputil golomb lpc"
2028 flashsv_decoder_select="zlib"
2029 flashsv_encoder_select="zlib"
2030 flashsv2_encoder_select="zlib"
2031 flashsv2_decoder_select="zlib"
2032 flv_decoder_select="h263_decoder"
2033 flv_encoder_select="h263_encoder"
2034 fourxm_decoder_select="dsputil"
2035 fraps_decoder_select="dsputil huffman"
2036 g2m_decoder_select="dsputil zlib"
2037 g729_decoder_select="dsputil"
2038 h261_decoder_select="error_resilience mpegvideo"
2039 h261_encoder_select="aandcttables mpegvideoenc"
2040 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2041 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2042 h263i_decoder_select="h263_decoder"
2043 h263p_encoder_select="h263_encoder"
2044 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2045 h264_decoder_suggest="error_resilience"
2046 hevc_decoder_select="cabac dsputil golomb videodsp"
2047 huffyuv_decoder_select="dsputil llviddsp"
2048 huffyuv_encoder_select="dsputil huffman llviddsp"
2049 iac_decoder_select="imc_decoder"
2050 imc_decoder_select="dsputil fft mdct sinewin"
2051 indeo3_decoder_select="hpeldsp"
2052 interplay_video_decoder_select="hpeldsp"
2053 jpegls_decoder_select="golomb mjpeg_decoder"
2054 jpegls_encoder_select="golomb"
2055 jv_decoder_select="dsputil"
2056 lagarith_decoder_select="dsputil"
2057 ljpeg_encoder_select="aandcttables mpegvideoenc"
2058 loco_decoder_select="golomb"
2059 mdec_decoder_select="dsputil error_resilience mpegvideo"
2060 metasound_decoder_select="lsp mdct sinewin"
2061 mimic_decoder_select="dsputil hpeldsp"
2062 mjpeg_decoder_select="dsputil hpeldsp exif"
2063 mjpeg_encoder_select="aandcttables mpegvideoenc"
2064 mjpegb_decoder_select="mjpeg_decoder"
2065 mlp_decoder_select="mlp_parser"
2066 motionpixels_decoder_select="dsputil"
2067 mp1_decoder_select="mpegaudio"
2068 mp1float_decoder_select="mpegaudio"
2069 mp2_decoder_select="mpegaudio"
2070 mp2float_decoder_select="mpegaudio"
2071 mp3_decoder_select="mpegaudio"
2072 mp3adu_decoder_select="mpegaudio"
2073 mp3adufloat_decoder_select="mpegaudio"
2074 mp3float_decoder_select="mpegaudio"
2075 mp3on4_decoder_select="mpegaudio"
2076 mp3on4float_decoder_select="mpegaudio"
2077 mpc7_decoder_select="dsputil mpegaudiodsp"
2078 mpc8_decoder_select="mpegaudiodsp"
2079 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2080 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2081 mpeg1video_decoder_select="error_resilience mpegvideo"
2082 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2083 mpeg2video_decoder_select="error_resilience mpegvideo"
2084 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2085 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2086 mpeg4_encoder_select="h263_encoder"
2087 msmpeg4v1_decoder_select="h263_decoder"
2088 msmpeg4v2_decoder_select="h263_decoder"
2089 msmpeg4v2_encoder_select="h263_encoder"
2090 msmpeg4v3_decoder_select="h263_decoder"
2091 msmpeg4v3_encoder_select="h263_encoder"
2092 mss2_decoder_select="error_resilience vc1_decoder"
2093 mxpeg_decoder_select="mjpeg_decoder"
2094 nellymoser_decoder_select="mdct sinewin"
2095 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2096 nuv_decoder_select="dsputil lzo"
2097 png_decoder_select="zlib"
2098 png_encoder_select="dsputil zlib"
2099 prores_decoder_select="dsputil"
2100 prores_encoder_select="dsputil"
2101 qcelp_decoder_select="lsp"
2102 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2103 ra_144_encoder_select="audio_frame_queue lpc"
2104 ralf_decoder_select="golomb"
2105 rawvideo_decoder_select="dsputil"
2106 rtjpeg_decoder_select="dsputil"
2107 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2108 rv10_encoder_select="h263_encoder"
2109 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2110 rv20_encoder_select="h263_encoder"
2111 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2112 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2113 shorten_decoder_select="golomb"
2114 sipr_decoder_select="lsp"
2115 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2116 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2117 sonic_decoder_select="golomb rangecoder"
2118 sonic_encoder_select="golomb rangecoder"
2119 sonic_ls_encoder_select="golomb"
2120 sp5x_decoder_select="mjpeg_decoder"
2121 svq1_decoder_select="hpeldsp"
2122 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2123 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2124 svq3_decoder_suggest="zlib"
2125 tak_decoder_select="dsputil"
2126 theora_decoder_select="vp3_decoder"
2127 thp_decoder_select="mjpeg_decoder"
2128 tiff_decoder_suggest="zlib"
2129 tiff_encoder_suggest="zlib"
2130 truehd_decoder_select="mlp_parser"
2131 truemotion2_decoder_select="dsputil"
2132 truespeech_decoder_select="dsputil"
2133 tscc_decoder_select="zlib"
2134 twinvq_decoder_select="mdct lsp sinewin"
2135 utvideo_decoder_select="dsputil"
2136 utvideo_encoder_select="dsputil huffman"
2137 vble_decoder_select="dsputil"
2138 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2139 vc1image_decoder_select="vc1_decoder"
2140 vorbis_decoder_select="mdct"
2141 vorbis_encoder_select="mdct"
2142 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2143 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2144 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2145 vp6a_decoder_select="vp6_decoder"
2146 vp6f_decoder_select="vp6_decoder"
2147 vp7_decoder_select="h264pred videodsp"
2148 vp8_decoder_select="h264pred videodsp"
2149 vp9_decoder_select="videodsp"
2150 webp_decoder_select="vp8_decoder"
2151 wmapro_decoder_select="mdct sinewin"
2152 wmav1_decoder_select="mdct sinewin"
2153 wmav1_encoder_select="mdct sinewin"
2154 wmav2_decoder_select="mdct sinewin"
2155 wmav2_encoder_select="mdct sinewin"
2156 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2157 wmv1_decoder_select="h263_decoder"
2158 wmv1_encoder_select="h263_encoder"
2159 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2160 wmv2_encoder_select="h263_encoder"
2161 wmv3_decoder_select="vc1_decoder"
2162 wmv3image_decoder_select="wmv3_decoder"
2163 zerocodec_decoder_select="zlib"
2164 zlib_decoder_select="zlib"
2165 zlib_encoder_select="zlib"
2166 zmbv_decoder_select="zlib"
2167 zmbv_encoder_select="zlib"
2168
2169 # hardware accelerators
2170 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2171 dxva2_deps="dxva2api_h"
2172 vaapi_deps="va_va_h"
2173 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2174 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2175 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2176 xvmc_deps="X11_extensions_XvMClib_h"
2177
2178 h263_vaapi_hwaccel_deps="vaapi"
2179 h263_vaapi_hwaccel_select="h263_decoder"
2180 h263_vdpau_hwaccel_deps="vdpau"
2181 h263_vdpau_hwaccel_select="h263_decoder"
2182 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2183 h264_dxva2_hwaccel_deps="dxva2"
2184 h264_dxva2_hwaccel_select="h264_decoder"
2185 h264_vaapi_hwaccel_deps="vaapi"
2186 h264_vaapi_hwaccel_select="h264_decoder"
2187 h264_vda_decoder_deps="vda"
2188 h264_vda_decoder_select="h264_decoder"
2189 h264_vda_hwaccel_deps="vda"
2190 h264_vda_hwaccel_select="h264_decoder"
2191 h264_vdpau_decoder_deps="vdpau"
2192 h264_vdpau_decoder_select="h264_decoder"
2193 h264_vdpau_hwaccel_deps="vdpau"
2194 h264_vdpau_hwaccel_select="h264_decoder"
2195 mpeg_vdpau_decoder_deps="vdpau"
2196 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2197 mpeg_xvmc_hwaccel_deps="xvmc"
2198 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2199 mpeg1_vdpau_decoder_deps="vdpau"
2200 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2201 mpeg1_vdpau_hwaccel_deps="vdpau"
2202 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2203 mpeg1_xvmc_hwaccel_deps="xvmc"
2204 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2205 mpeg2_crystalhd_decoder_select="crystalhd"
2206 mpeg2_dxva2_hwaccel_deps="dxva2"
2207 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2208 mpeg2_vaapi_hwaccel_deps="vaapi"
2209 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2210 mpeg2_vdpau_hwaccel_deps="vdpau"
2211 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2212 mpeg2_xvmc_hwaccel_deps="xvmc"
2213 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2214 mpeg4_crystalhd_decoder_select="crystalhd"
2215 mpeg4_vaapi_hwaccel_deps="vaapi"
2216 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2217 mpeg4_vdpau_decoder_deps="vdpau"
2218 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2219 mpeg4_vdpau_hwaccel_deps="vdpau"
2220 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2221 msmpeg4_crystalhd_decoder_select="crystalhd"
2222 vc1_crystalhd_decoder_select="crystalhd"
2223 vc1_dxva2_hwaccel_deps="dxva2"
2224 vc1_dxva2_hwaccel_select="vc1_decoder"
2225 vc1_vaapi_hwaccel_deps="vaapi"
2226 vc1_vaapi_hwaccel_select="vc1_decoder"
2227 vc1_vdpau_decoder_deps="vdpau"
2228 vc1_vdpau_decoder_select="vc1_decoder"
2229 vc1_vdpau_hwaccel_deps="vdpau"
2230 vc1_vdpau_hwaccel_select="vc1_decoder"
2231 wmv3_crystalhd_decoder_select="crystalhd"
2232 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2233 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2234 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2235 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2236
2237 # parsers
2238 h264_parser_select="h264_decoder"
2239 hevc_parser_select="hevc_decoder"
2240 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2241 mpegvideo_parser_select="error_resilience mpegvideo"
2242 vc1_parser_select="mpegvideo"
2243
2244 # external libraries
2245 libaacplus_encoder_deps="libaacplus"
2246 libcelt_decoder_deps="libcelt"
2247 libfaac_encoder_deps="libfaac"
2248 libfaac_encoder_select="audio_frame_queue"
2249 libfdk_aac_decoder_deps="libfdk_aac"
2250 libfdk_aac_encoder_deps="libfdk_aac"
2251 libfdk_aac_encoder_select="audio_frame_queue"
2252 libgme_demuxer_deps="libgme"
2253 libgsm_decoder_deps="libgsm"
2254 libgsm_encoder_deps="libgsm"
2255 libgsm_ms_decoder_deps="libgsm"
2256 libgsm_ms_encoder_deps="libgsm"
2257 libilbc_decoder_deps="libilbc"
2258 libilbc_encoder_deps="libilbc"
2259 libmodplug_demuxer_deps="libmodplug"
2260 libmp3lame_encoder_deps="libmp3lame"
2261 libmp3lame_encoder_select="audio_frame_queue"
2262 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2263 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2264 libopencore_amrnb_encoder_select="audio_frame_queue"
2265 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libquvi_demuxer_deps="libquvi"
2272 libschroedinger_decoder_deps="libschroedinger"
2273 libschroedinger_encoder_deps="libschroedinger"
2274 libshine_encoder_deps="libshine"
2275 libshine_encoder_select="audio_frame_queue"
2276 libspeex_decoder_deps="libspeex"
2277 libspeex_encoder_deps="libspeex"
2278 libspeex_encoder_select="audio_frame_queue"
2279 libstagefright_h264_decoder_deps="libstagefright_h264"
2280 libtheora_encoder_deps="libtheora"
2281 libtwolame_encoder_deps="libtwolame"
2282 libvo_aacenc_encoder_deps="libvo_aacenc"
2283 libvo_aacenc_encoder_select="audio_frame_queue"
2284 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2285 libvorbis_decoder_deps="libvorbis"
2286 libvorbis_encoder_deps="libvorbis"
2287 libvorbis_encoder_select="audio_frame_queue"
2288 libvpx_vp8_decoder_deps="libvpx"
2289 libvpx_vp8_encoder_deps="libvpx"
2290 libvpx_vp9_decoder_deps="libvpx"
2291 libvpx_vp9_encoder_deps="libvpx"
2292 libwavpack_encoder_deps="libwavpack"
2293 libwebp_encoder_deps="libwebp"
2294 libx264_encoder_deps="libx264"
2295 libx264rgb_encoder_deps="libx264"
2296 libx265_encoder_deps="libx265"
2297 libxavs_encoder_deps="libxavs"
2298 libxvid_encoder_deps="libxvid"
2299 libutvideo_decoder_deps="libutvideo"
2300 libutvideo_encoder_deps="libutvideo"
2301 libzvbi_teletext_decoder_deps="libzvbi"
2302
2303 # demuxers / muxers
2304 ac3_demuxer_select="ac3_parser"
2305 asf_demuxer_select="riffdec"
2306 asf_muxer_select="riffenc"
2307 asf_stream_muxer_select="asf_muxer"
2308 avi_demuxer_select="riffdec exif"
2309 avi_muxer_select="riffenc"
2310 avisynth_demuxer_deps="avisynth"
2311 avisynth_demuxer_select="riffdec"
2312 caf_demuxer_select="riffdec"
2313 dirac_demuxer_select="dirac_parser"
2314 dts_demuxer_select="dca_parser"
2315 dtshd_demuxer_select="dca_parser"
2316 dxa_demuxer_select="riffdec"
2317 eac3_demuxer_select="ac3_parser"
2318 f4v_muxer_select="mov_muxer"
2319 flac_demuxer_select="flac_parser"
2320 hds_muxer_select="flv_muxer"
2321 hls_muxer_select="mpegts_muxer"
2322 ipod_muxer_select="mov_muxer"
2323 ismv_muxer_select="mov_muxer"
2324 libnut_demuxer_deps="libnut"
2325 libnut_muxer_deps="libnut"
2326 matroska_audio_muxer_select="matroska_muxer"
2327 matroska_demuxer_select="riffdec"
2328 matroska_demuxer_suggest="bzlib lzo zlib"
2329 matroska_muxer_select="riffenc"
2330 mmf_muxer_select="riffenc"
2331 mov_demuxer_select="riffdec"
2332 mov_demuxer_suggest="zlib"
2333 mov_muxer_select="riffenc rtpenc_chain"
2334 mp3_demuxer_select="mpegaudio_parser"
2335 mp4_muxer_select="mov_muxer"
2336 mpegts_muxer_select="adts_muxer latm_muxer"
2337 mpegtsraw_demuxer_select="mpegts_demuxer"
2338 mxf_d10_muxer_select="mxf_muxer"
2339 nut_muxer_select="riffenc"
2340 nuv_demuxer_select="riffdec"
2341 ogg_demuxer_select="golomb"
2342 psp_muxer_select="mov_muxer"
2343 rtp_demuxer_select="sdp_demuxer"
2344 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2345 rtsp_demuxer_select="http_protocol rtpdec"
2346 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2347 sap_demuxer_select="sdp_demuxer"
2348 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2349 sdp_demuxer_select="rtpdec"
2350 smoothstreaming_muxer_select="ismv_muxer"
2351 spdif_muxer_select="aac_parser"
2352 tak_demuxer_select="tak_parser"
2353 tg2_muxer_select="mov_muxer"
2354 tgp_muxer_select="mov_muxer"
2355 vobsub_demuxer_select="mpegps_demuxer"
2356 w64_demuxer_select="wav_demuxer"
2357 w64_muxer_select="wav_muxer"
2358 wav_demuxer_select="riffdec"
2359 wav_muxer_select="riffenc"
2360 webm_muxer_select="riffenc"
2361 wtv_demuxer_select="riffdec"
2362 wtv_muxer_select="riffenc"
2363 xmv_demuxer_select="riffdec"
2364 xwma_demuxer_select="riffdec"
2365
2366 # indevs / outdevs
2367 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2368 alsa_outdev_deps="alsa_asoundlib_h"
2369 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2370 caca_outdev_deps="libcaca"
2371 decklink_outdev_deps="decklink pthreads"
2372 decklink_outdev_extralibs="-lstdc++"
2373 dshow_indev_deps="IBaseFilter"
2374 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2375 dv1394_indev_deps="dv1394"
2376 dv1394_indev_select="dv_demuxer"
2377 fbdev_indev_deps="linux_fb_h"
2378 fbdev_outdev_deps="linux_fb_h"
2379 gdigrab_indev_deps="CreateDIBSection"
2380 gdigrab_indev_extralibs="-lgdi32"
2381 gdigrab_indev_select="bmp_decoder"
2382 iec61883_indev_deps="libiec61883"
2383 jack_indev_deps="jack_jack_h sem_timedwait"
2384 lavfi_indev_deps="avfilter"
2385 libcdio_indev_deps="libcdio"
2386 libdc1394_indev_deps="libdc1394"
2387 libv4l2_indev_deps="libv4l2"
2388 openal_indev_deps="openal"
2389 opengl_outdev_deps="opengl"
2390 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2391 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2392 pulse_indev_deps="libpulse"
2393 pulse_outdev_deps="libpulse"
2394 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2395 qtkit_indev_select="qtkit"
2396 sdl_outdev_deps="sdl"
2397 sndio_indev_deps="sndio_h"
2398 sndio_outdev_deps="sndio_h"
2399 v4l_indev_deps="linux_videodev_h"
2400 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2401 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2402 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2403 vfwcap_indev_extralibs="-lavicap32"
2404 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2405 xv_outdev_extralibs="-lXv -lX11 -lXext"
2406 x11grab_indev_deps="x11grab"
2407
2408 # protocols
2409 bluray_protocol_deps="libbluray"
2410 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2411 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2412 ffrtmpcrypt_protocol_select="tcp_protocol"
2413 ffrtmphttp_protocol_deps="!librtmp_protocol"
2414 ffrtmphttp_protocol_select="http_protocol"
2415 ftp_protocol_select="tcp_protocol"
2416 gopher_protocol_select="network"
2417 http_protocol_select="tcp_protocol"
2418 httpproxy_protocol_select="tcp_protocol"
2419 https_protocol_select="tls_protocol"
2420 librtmp_protocol_deps="librtmp"
2421 librtmpe_protocol_deps="librtmp"
2422 librtmps_protocol_deps="librtmp"
2423 librtmpt_protocol_deps="librtmp"
2424 librtmpte_protocol_deps="librtmp"
2425 libssh_protocol_deps="libssh"
2426 mmsh_protocol_select="http_protocol"
2427 mmst_protocol_select="network"
2428 rtmp_protocol_deps="!librtmp_protocol"
2429 rtmp_protocol_select="tcp_protocol"
2430 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2431 rtmps_protocol_deps="!librtmp_protocol"
2432 rtmps_protocol_select="tls_protocol"
2433 rtmpt_protocol_select="ffrtmphttp_protocol"
2434 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2435 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2436 rtp_protocol_select="udp_protocol"
2437 sctp_protocol_deps="struct_sctp_event_subscribe"
2438 sctp_protocol_select="network"
2439 srtp_protocol_select="rtp_protocol"
2440 tcp_protocol_select="network"
2441 tls_protocol_deps_any="openssl gnutls"
2442 tls_protocol_select="tcp_protocol"
2443 udp_protocol_select="network"
2444 unix_protocol_deps="sys_un_h"
2445 unix_protocol_select="network"
2446
2447 # filters
2448 aconvert_filter_deps="swresample"
2449 amovie_filter_deps="avcodec avformat"
2450 aresample_filter_deps="swresample"
2451 ass_filter_deps="libass"
2452 asyncts_filter_deps="avresample"
2453 atempo_filter_deps="avcodec"
2454 atempo_filter_select="rdft"
2455 azmq_filter_deps="libzmq"
2456 blackframe_filter_deps="gpl"
2457 boxblur_filter_deps="gpl"
2458 colormatrix_filter_deps="gpl"
2459 cropdetect_filter_deps="gpl"
2460 dctdnoiz_filter_deps="avcodec"
2461 dctdnoiz_filter_select="dct"
2462 delogo_filter_deps="gpl"
2463 deshake_filter_deps="avcodec"
2464 deshake_filter_select="dsputil"
2465 drawtext_filter_deps="libfreetype"
2466 ebur128_filter_deps="gpl"
2467 flite_filter_deps="libflite"
2468 frei0r_filter_deps="frei0r dlopen"
2469 frei0r_filter_extralibs='$ldl'
2470 frei0r_src_filter_deps="frei0r dlopen"
2471 frei0r_src_filter_extralibs='$ldl'
2472 geq_filter_deps="gpl"
2473 histeq_filter_deps="gpl"
2474 hqdn3d_filter_deps="gpl"
2475 interlace_filter_deps="gpl"
2476 kerndeint_filter_deps="gpl"
2477 ladspa_filter_deps="ladspa dlopen"
2478 mcdeint_filter_deps="avcodec gpl"
2479 movie_filter_deps="avcodec avformat"
2480 mp_filter_deps="gpl avcodec swscale inline_asm"
2481 mpdecimate_filter_deps="gpl avcodec"
2482 mptestsrc_filter_deps="gpl"
2483 negate_filter_deps="lut_filter"
2484 perspective_filter_deps="gpl"
2485 ocv_filter_deps="libopencv"
2486 owdenoise_filter_deps="gpl"
2487 pan_filter_deps="swresample"
2488 phase_filter_deps="gpl"
2489 pp_filter_deps="gpl postproc"
2490 pullup_filter_deps="gpl"
2491 removelogo_filter_deps="avcodec avformat swscale"
2492 resample_filter_deps="avresample"
2493 sab_filter_deps="gpl swscale"
2494 scale_filter_deps="swscale"
2495 smartblur_filter_deps="gpl swscale"
2496 showspectrum_filter_deps="avcodec"
2497 showspectrum_filter_select="rdft"
2498 spp_filter_deps="gpl avcodec"
2499 spp_filter_select="fft"
2500 stereo3d_filter_deps="gpl"
2501 subtitles_filter_deps="avformat avcodec libass"
2502 super2xsai_filter_deps="gpl"
2503 tinterlace_filter_deps="gpl"
2504 vidstabdetect_filter_deps="libvidstab"
2505 vidstabtransform_filter_deps="libvidstab"
2506 pixfmts_super2xsai_test_deps="super2xsai_filter"
2507 tinterlace_merge_test_deps="tinterlace_filter"
2508 tinterlace_pad_test_deps="tinterlace_filter"
2509 zmq_filter_deps="libzmq"
2510
2511 # examples
2512 avio_reading="avformat avcodec avutil"
2513 avcodec_example_deps="avcodec avutil"
2514 demuxing_decoding_example_deps="avcodec avformat avutil"
2515 filter_audio_example_deps="avfilter avutil"
2516 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2517 filtering_video_example_deps="avfilter avcodec avformat avutil"
2518 metadata_example_deps="avformat avutil"
2519 muxing_example_deps="avcodec avformat avutil swscale"
2520 remuxing_example_deps="avcodec avformat avutil"
2521 resampling_audio_example_deps="avutil swresample"
2522 scaling_video_example_deps="avutil swscale"
2523 transcode_aac_example_deps="avcodec avformat swresample"
2524 transcoding_example_deps="avfilter avcodec avformat avutil"
2525
2526 # libraries
2527 avcodec_deps="avutil"
2528 avdevice_deps="avutil avcodec avformat"
2529 avfilter_deps="avutil"
2530 avformat_deps="avutil avcodec"
2531 avresample_deps="avutil"
2532 postproc_deps="avutil gpl"
2533 swscale_deps="avutil"
2534
2535 # programs
2536 ffmpeg_deps="avcodec avfilter avformat swresample"
2537 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2538                null_filter
2539                setpts_filter trim_filter"
2540 ffplay_deps="avcodec avformat swscale swresample sdl"
2541 ffplay_libs='$sdl_libs'
2542 ffplay_select="rdft crop_filter"
2543 ffprobe_deps="avcodec avformat"
2544 ffserver_deps="avformat fork sarestart"
2545 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2546
2547 # documentation
2548 podpages_deps="perl"
2549 manpages_deps="perl pod2man"
2550 htmlpages_deps="perl texi2html"
2551 txtpages_deps="perl makeinfo"
2552 doc_deps_any="manpages htmlpages podpages txtpages"
2553
2554 # default parameters
2555
2556 logfile="config.log"
2557
2558 # installation paths
2559 prefix_default="/usr/local"
2560 bindir_default='${prefix}/bin'
2561 datadir_default='${prefix}/share/ffmpeg'
2562 docdir_default='${prefix}/share/doc/ffmpeg'
2563 incdir_default='${prefix}/include'
2564 libdir_default='${prefix}/lib'
2565 mandir_default='${prefix}/share/man'
2566 shlibdir_default="$libdir_default"
2567
2568 # toolchain
2569 ar_default="ar"
2570 cc_default="gcc"
2571 cxx_default="g++"
2572 host_cc_default="gcc"
2573 cp_f="cp -f"
2574 install="install"
2575 ln_s="ln -s -f"
2576 nm_default="nm -g"
2577 objformat="elf"
2578 pkg_config_default=pkg-config
2579 ranlib="ranlib"
2580 strip_default="strip"
2581 yasmexe_default="yasm"
2582 windres_default="windres"
2583
2584 nogas=":"
2585
2586 # OS
2587 target_os_default=$(tolower $(uname -s))
2588 host_os=$target_os_default
2589
2590 # machine
2591 if test "$target_os_default" = aix; then
2592     arch_default=$(uname -p)
2593 else
2594     arch_default=$(uname -m)
2595 fi
2596 cpu="generic"
2597
2598 # configurable options
2599 enable $PROGRAM_LIST
2600 enable $DOCUMENT_LIST
2601 enable $EXAMPLE_LIST
2602 enable $(filter_out avresample $LIBRARY_LIST)
2603 enable stripping
2604
2605 enable asm
2606 enable debug
2607 enable doc
2608 enable optimizations
2609 enable runtime_cpudetect
2610 enable safe_bitstream_reader
2611 enable static
2612 enable swscale_alpha
2613
2614 # Enable hwaccels by default.
2615 enable dxva2 vaapi vda vdpau xvmc
2616 enable xlib
2617
2618 # build settings
2619 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2620 LIBPREF="lib"
2621 LIBSUF=".a"
2622 FULLNAME='$(NAME)$(BUILDSUF)'
2623 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2624 SLIBPREF="lib"
2625 SLIBSUF=".so"
2626 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2627 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2628 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2629 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2630 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2631 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2632
2633 asflags_filter=echo
2634 cflags_filter=echo
2635 ldflags_filter=echo
2636
2637 AS_C='-c'
2638 AS_O='-o $@'
2639 CC_C='-c'
2640 CC_E='-E -o $@'
2641 CC_O='-o $@'
2642 CXX_C='-c'
2643 CXX_O='-o $@'
2644 LD_O='-o $@'
2645 LD_LIB='-l%'
2646 LD_PATH='-L'
2647 HOSTCC_C='-c'
2648 HOSTCC_E='-E -o $@'
2649 HOSTCC_O='-o $@'
2650 HOSTLD_O='-o $@'
2651
2652 host_libs='-lm'
2653 host_cflags_filter=echo
2654 host_ldflags_filter=echo
2655
2656 target_path='$(CURDIR)'
2657
2658 # since the object filename is not given with the -MM flag, the compiler
2659 # is only able to print the basename, and we must add the path ourselves
2660 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2661 DEPFLAGS='-MM'
2662
2663 # find source path
2664 if test -f configure; then
2665     source_path=.
2666 else
2667     source_path=$(cd $(dirname "$0"); pwd)
2668     echo "$source_path" | grep -q '[[:blank:]]' &&
2669         die "Out of tree builds are impossible with whitespace in source path."
2670     test -e "$source_path/config.h" &&
2671         die "Out of tree builds are impossible with config.h in source dir."
2672 fi
2673
2674 for v in "$@"; do
2675     r=${v#*=}
2676     l=${v%"$r"}
2677     r=$(sh_quote "$r")
2678     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2679 done
2680
2681 find_things(){
2682     thing=$1
2683     pattern=$2
2684     file=$source_path/$3
2685     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2686 }
2687
2688 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2689 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2690 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2691 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2692 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2693 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2694 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2695 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2696 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2697 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2698 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2699
2700 ALL_COMPONENTS="
2701     $BSF_LIST
2702     $DECODER_LIST
2703     $DEMUXER_LIST
2704     $ENCODER_LIST
2705     $FILTER_LIST
2706     $HWACCEL_LIST
2707     $INDEV_LIST
2708     $MUXER_LIST
2709     $OUTDEV_LIST
2710     $PARSER_LIST
2711     $PROTOCOL_LIST
2712 "
2713
2714 for n in $COMPONENT_LIST; do
2715     v=$(toupper ${n%s})_LIST
2716     eval enable \$$v
2717     eval ${n}_if_any="\$$v"
2718 done
2719
2720 enable $ARCH_EXT_LIST
2721
2722 die_unknown(){
2723     echo "Unknown option \"$1\"."
2724     echo "See $0 --help for available options."
2725     exit 1
2726 }
2727
2728 print_3_columns() {
2729     cat | tr ' ' '\n' | sort | pr -r -3 -t
2730 }
2731
2732 show_list() {
2733     suffix=_$1
2734     shift
2735     echo $* | sed s/$suffix//g | print_3_columns
2736     exit 0
2737 }
2738
2739 rand_list(){
2740     IFS=', '
2741     set -- $*
2742     unset IFS
2743     for thing; do
2744         comp=${thing%:*}
2745         prob=${thing#$comp}
2746         prob=${prob#:}
2747         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2748         echo "prob ${prob:-0.5}"
2749         printf '%s\n' $comp
2750     done
2751 }
2752
2753 do_random(){
2754     action=$1
2755     shift
2756     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2757     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2758 }
2759
2760 for opt do
2761     optval="${opt#*=}"
2762     case "$opt" in
2763         --extra-ldflags=*)
2764             add_ldflags $optval
2765         ;;
2766         --extra-libs=*)
2767             add_extralibs $optval
2768         ;;
2769         --disable-devices)
2770             disable $INDEV_LIST $OUTDEV_LIST
2771         ;;
2772         --enable-debug=*)
2773             debuglevel="$optval"
2774         ;;
2775         --disable-programs)
2776             disable $PROGRAM_LIST
2777         ;;
2778         --disable-everything)
2779             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2780         ;;
2781         --disable-all)
2782             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2783             disable $LIBRARY_LIST $PROGRAM_LIST doc
2784         ;;
2785         --enable-random|--disable-random)
2786             action=${opt%%-random}
2787             do_random ${action#--} $COMPONENT_LIST
2788         ;;
2789         --enable-random=*|--disable-random=*)
2790             action=${opt%%-random=*}
2791             do_random ${action#--} $optval
2792         ;;
2793         --enable-*=*|--disable-*=*)
2794             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2795             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2796             eval list=\$$(toupper $thing)_LIST
2797             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2798             list=$(filter "$name" $list)
2799             [ "$list" = "" ] && warn "Option $opt did not match anything"
2800             $action $list
2801         ;;
2802         --enable-?*|--disable-?*)
2803             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2804             if is_in $option $COMPONENT_LIST; then
2805                 test $action = disable && action=unset
2806                 eval $action \$$(toupper ${option%s})_LIST
2807             elif is_in $option $CMDLINE_SELECT; then
2808                 $action $option
2809             else
2810                 die_unknown $opt
2811             fi
2812         ;;
2813         --list-*)
2814             NAME="${opt#--list-}"
2815             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2816             NAME=${NAME%s}
2817             eval show_list $NAME \$$(toupper $NAME)_LIST
2818         ;;
2819         --help|-h) show_help
2820         ;;
2821         --fatal-warnings) enable fatal_warnings
2822         ;;
2823         *)
2824             optname="${opt%%=*}"
2825             optname="${optname#--}"
2826             optname=$(echo "$optname" | sed 's/-/_/g')
2827             if is_in $optname $CMDLINE_SET; then
2828                 eval $optname='$optval'
2829             elif is_in $optname $CMDLINE_APPEND; then
2830                 append $optname "$optval"
2831             else
2832                 die_unknown $opt
2833             fi
2834         ;;
2835     esac
2836 done
2837
2838 disabled logging && logfile=/dev/null
2839
2840 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2841 set >> $logfile
2842
2843 test -n "$cross_prefix" && enable cross_compile
2844
2845 if enabled cross_compile; then
2846     test -n "$arch" && test -n "$target_os" ||
2847         die "Must specify target arch and OS when cross-compiling"
2848 fi
2849
2850 ar_default="${cross_prefix}${ar_default}"
2851 cc_default="${cross_prefix}${cc_default}"
2852 cxx_default="${cross_prefix}${cxx_default}"
2853 nm_default="${cross_prefix}${nm_default}"
2854 pkg_config_default="${cross_prefix}${pkg_config_default}"
2855 ranlib="${cross_prefix}${ranlib}"
2856 strip_default="${cross_prefix}${strip_default}"
2857 windres_default="${cross_prefix}${windres_default}"
2858
2859 sysinclude_default="${sysroot}/usr/include"
2860
2861 test -n "$valgrind" && toolchain="valgrind-memcheck"
2862
2863 case "$toolchain" in
2864     clang-asan)
2865         cc_default="clang"
2866         add_cflags  -fsanitize=address
2867         add_ldflags -fsanitize=address
2868     ;;
2869     clang-tsan)
2870         cc_default="clang"
2871         add_cflags  -fsanitize=thread -pie
2872         add_ldflags -fsanitize=thread -pie
2873     ;;
2874     clang-usan)
2875         cc_default="clang"
2876         add_cflags  -fsanitize=undefined
2877         add_ldflags -fsanitize=undefined
2878     ;;
2879     gcc-asan)
2880         cc_default="gcc"
2881         add_cflags  -fsanitize=address
2882         add_ldflags -fsanitize=address
2883     ;;
2884     gcc-tsan)
2885         cc_default="gcc"
2886         add_cflags  -fsanitize=thread -pie -fPIC
2887         add_ldflags -fsanitize=thread -pie -fPIC
2888     ;;
2889     gcc-usan)
2890         cc_default="gcc"
2891         add_cflags  -fsanitize=undefined
2892         add_ldflags -fsanitize=undefined
2893     ;;
2894     valgrind-massif)
2895         target_exec_default=${valgrind:-"valgrind"}
2896         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"
2897     ;;
2898     valgrind-memcheck)
2899         target_exec_default=${valgrind:-"valgrind"}
2900         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2901     ;;
2902     msvc)
2903         # Check whether the current MSVC version needs the C99 converter.
2904         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2905         # support enough of C99 to build ffmpeg. Default to the new
2906         # behaviour if the regexp was unable to match anything, since this
2907         # successfully parses the version number of existing supported
2908         # versions that require the converter (MSVC 2010 and 2012).
2909         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2910         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2911             cc_default="cl"
2912         else
2913             cc_default="c99wrap cl"
2914         fi
2915         ld_default="link"
2916         nm_default="dumpbin -symbols"
2917         ar_default="lib"
2918         target_os_default="win32"
2919         # Use a relative path for TMPDIR. This makes sure all the
2920         # ffconf temp files are written with a relative path, avoiding
2921         # issues with msys/win32 path conversion for MSVC parameters
2922         # such as -Fo<file> or -out:<file>.
2923         TMPDIR=.
2924     ;;
2925     icl)
2926         cc_default="icl"
2927         ld_default="xilink"
2928         nm_default="dumpbin -symbols"
2929         ar_default="xilib"
2930         target_os_default="win32"
2931         TMPDIR=.
2932     ;;
2933     gcov)
2934         add_cflags  -fprofile-arcs -ftest-coverage
2935         add_ldflags -fprofile-arcs -ftest-coverage
2936     ;;
2937     hardened)
2938         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2939         add_ldflags -Wl,-z,relro -Wl,-z,now
2940     ;;
2941     ?*)
2942         die "Unknown toolchain $toolchain"
2943     ;;
2944 esac
2945
2946 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2947 enabled cross_compile || host_cc_default=$cc
2948 set_default host_cc
2949
2950 if ! $pkg_config --version >/dev/null 2>&1; then
2951     warn "$pkg_config not found, library detection may fail."
2952     pkg_config=false
2953 fi
2954
2955 exesuf() {
2956     case $1 in
2957         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2958     esac
2959 }
2960
2961 EXESUF=$(exesuf $target_os)
2962 HOSTEXESUF=$(exesuf $host_os)
2963
2964 # set temporary file name
2965 : ${TMPDIR:=$TEMPDIR}
2966 : ${TMPDIR:=$TMP}
2967 : ${TMPDIR:=/tmp}
2968
2969 if [ -n "$tempprefix" ] ; then
2970     mktemp(){
2971         echo $tempprefix.${HOSTNAME}.${UID}
2972     }
2973 elif ! check_cmd mktemp -u XXXXXX; then
2974     # simple replacement for missing mktemp
2975     # NOT SAFE FOR GENERAL USE
2976     mktemp(){
2977         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2978     }
2979 fi
2980
2981 tmpfile(){
2982     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2983         (set -C; exec > $tmp) 2>/dev/null ||
2984         die "Unable to create temporary file in $TMPDIR."
2985     append TMPFILES $tmp
2986     eval $1=$tmp
2987 }
2988
2989 trap 'rm -f -- $TMPFILES' EXIT
2990
2991 tmpfile TMPASM .asm
2992 tmpfile TMPC   .c
2993 tmpfile TMPCPP .cpp
2994 tmpfile TMPE   $EXESUF
2995 tmpfile TMPH   .h
2996 tmpfile TMPM   .m
2997 tmpfile TMPO   .o
2998 tmpfile TMPS   .S
2999 tmpfile TMPSH  .sh
3000 tmpfile TMPV   .ver
3001
3002 unset -f mktemp
3003
3004 chmod +x $TMPE
3005
3006 # make sure we can execute files in $TMPDIR
3007 cat > $TMPSH 2>> $logfile <<EOF
3008 #! /bin/sh
3009 EOF
3010 chmod +x $TMPSH >> $logfile 2>&1
3011 if ! $TMPSH >> $logfile 2>&1; then
3012     cat <<EOF
3013 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3014 variable to another directory and make sure that it is not mounted noexec.
3015 EOF
3016     die "Sanity test failed."
3017 fi
3018
3019 ccc_flags(){
3020     for flag; do
3021         case $flag in
3022             -std=c99)           echo -c99                       ;;
3023             -mcpu=*)            echo -arch ${flag#*=}           ;;
3024             -mieee)             echo -ieee                      ;;
3025             -O*|-fast)          echo $flag                      ;;
3026             -fno-math-errno)    echo -assume nomath_errno       ;;
3027             -g)                 echo -g3                        ;;
3028             -Wall)              echo -msg_enable level2         ;;
3029             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3030             -Wl,*)              echo $flag                      ;;
3031             -f*|-W*)                                            ;;
3032             *)                  echo $flag                      ;;
3033         esac
3034    done
3035 }
3036
3037 cparser_flags(){
3038     for flag; do
3039         case $flag in
3040             -Wno-switch)             echo -Wno-switch-enum ;;
3041             -Wno-format-zero-length) ;;
3042             -Wdisabled-optimization) ;;
3043             -Wno-pointer-sign)       echo -Wno-other ;;
3044             *)                       echo $flag ;;
3045         esac
3046     done
3047 }
3048
3049 msvc_common_flags(){
3050     for flag; do
3051         case $flag in
3052             # In addition to specifying certain flags under the compiler
3053             # specific filters, they must be specified here as well or else the
3054             # generic catch all at the bottom will print the original flag.
3055             -Wall)                ;;
3056             -std=c99)             ;;
3057             # Common flags
3058             -fomit-frame-pointer) ;;
3059             -g)                   echo -Z7 ;;
3060             -fno-math-errno)      ;;
3061             -fno-common)          ;;
3062             -fno-signed-zeros)    ;;
3063             -fPIC)                ;;
3064             -mthumb)              ;;
3065             -march=*)             ;;
3066             -lz)                  echo zlib.lib ;;
3067             -lavifil32)           echo vfw32.lib ;;
3068             -lavicap32)           echo vfw32.lib user32.lib ;;
3069             -l*)                  echo ${flag#-l}.lib ;;
3070             *)                    echo $flag ;;
3071         esac
3072     done
3073 }
3074
3075 msvc_flags(){
3076     msvc_common_flags "$@"
3077     for flag; do
3078         case $flag in
3079             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3080                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3081                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3082                                        -wd4554 \
3083                                        -wd4273 ;;
3084         esac
3085     done
3086 }
3087
3088 icl_flags(){
3089     msvc_common_flags "$@"
3090     for flag; do
3091         case $flag in
3092             # Despite what Intel's documentation says -Wall, which is supported
3093             # on Windows, does enable remarks so disable them here.
3094             -Wall)                echo $flag -Qdiag-disable:remark ;;
3095             -std=c99)             echo -Qstd=c99 ;;
3096         esac
3097     done
3098 }
3099
3100 pgi_flags(){
3101     for flag; do
3102         case $flag in
3103             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3104             -fomit-frame-pointer) echo -Mnoframe ;;
3105             -g)                   echo -gopt ;;
3106             *)                    echo $flag ;;
3107         esac
3108     done
3109 }
3110
3111 suncc_flags(){
3112     for flag; do
3113         case $flag in
3114             -march=*|-mcpu=*)
3115                 case "${flag#*=}" in
3116                     native)                   echo -xtarget=native       ;;
3117                     v9|niagara)               echo -xarch=sparc          ;;
3118                     ultrasparc)               echo -xarch=sparcvis       ;;
3119                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3120                     i586|pentium)             echo -xchip=pentium        ;;
3121                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3122                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3123                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3124                     pentium4*)          echo -xtarget=pentium4           ;;
3125                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3126                     *-sse3)             echo -xarch=sse3                 ;;
3127                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3128                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3129                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3130                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3131                     bdver*)                    echo -xarch=avx           ;;
3132                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3133                     k8|opteron|athlon64|athlon-fx)
3134                                                echo -xarch=sse2a         ;;
3135                     athlon*)                   echo -xarch=pentium_proa  ;;
3136                 esac
3137                 ;;
3138             -std=c99)             echo -xc99              ;;
3139             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3140             -fPIC)                echo -KPIC -xcode=pic32 ;;
3141             -W*,*)                echo $flag              ;;
3142             -f*-*|-W*|-mimpure-text)                      ;;
3143             -shared)              echo -G                 ;;
3144             *)                    echo $flag              ;;
3145         esac
3146     done
3147 }
3148
3149 tms470_flags(){
3150     for flag; do
3151         case $flag in
3152             -march=*|-mcpu=*)
3153                 case "${flag#*=}" in
3154                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3155                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3156                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3157                     armv6*|arm11*)          echo -mv=6   ;;
3158                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3159                                             echo -mv=5e  ;;
3160                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3161                 esac
3162                 ;;
3163             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3164             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3165             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3166             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3167             -msoft-float)   echo --float_support=vfplib       ;;
3168             -O[0-3]|-mf=*)  echo $flag                        ;;
3169             -g)             echo -g -mn                       ;;
3170             -pds=*)         echo $flag                        ;;
3171             -D*|-I*)        echo $flag                        ;;
3172             --gcc|--abi=*)  echo $flag                        ;;
3173             -me)            echo $flag                        ;;
3174         esac
3175     done
3176 }
3177
3178 probe_cc(){
3179     pfx=$1
3180     _cc=$2
3181
3182     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3183     unset _ld_o _ldflags _ld_lib _ld_path
3184     unset _depflags _DEPCMD _DEPFLAGS
3185     _flags_filter=echo
3186
3187     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3188         true # no-op to avoid reading stdin in following checks
3189     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3190         _type=llvm_gcc
3191         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3192         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3193         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3194         _cflags_speed='-O3'
3195         _cflags_size='-Os'
3196     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3197         _type=gcc
3198         gcc_version=$($_cc --version | head -n1)
3199         gcc_basever=$($_cc -dumpversion)
3200         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3201         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3202         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3203         if ! $_cc -dumpversion | grep -q '^2\.'; then
3204             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3205         fi
3206         _cflags_speed='-O3'
3207         _cflags_size='-Os'
3208     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3209         _type=icc
3210         _ident=$($_cc --version | head -n1)
3211         _depflags='-MMD'
3212         _cflags_speed='-O3'
3213         _cflags_size='-Os'
3214         _cflags_noopt='-O1'
3215     elif $_cc -v 2>&1 | grep -q xlc; then
3216         _type=xlc
3217         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3218         _cflags_speed='-O5'
3219         _cflags_size='-O5 -qcompact'
3220     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3221         _type=ccc
3222         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3223         _DEPFLAGS='-M'
3224         _cflags_speed='-fast'
3225         _cflags_size='-O1'
3226         _flags_filter=ccc_flags
3227     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3228         test -d "$sysroot" || die "No valid sysroot specified."
3229         _type=armcc
3230         _ident=$($_cc --vsn | head -n1)
3231         armcc_conf="$PWD/armcc.conf"
3232         $_cc --arm_linux_configure                 \
3233              --arm_linux_config_file="$armcc_conf" \
3234              --configure_sysroot="$sysroot"        \
3235              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3236              die "Error creating armcc configuration file."
3237         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3238         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3239         as_default="${cross_prefix}gcc"
3240         _depflags='-MMD'
3241         _cflags_speed='-O3'
3242         _cflags_size='-Os'
3243     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3244         _type=tms470
3245         _ident=$($_cc -version | head -n1 | tr -s ' ')
3246         _flags='--gcc --abi=eabi -me'
3247         _cc_e='-ppl -fe=$@'
3248         _cc_o='-fe=$@'
3249         _depflags='-ppa -ppd=$(@:.o=.d)'
3250         _cflags_speed='-O3 -mf=5'
3251         _cflags_size='-O3 -mf=2'
3252         _flags_filter=tms470_flags
3253     elif $_cc -v 2>&1 | grep -q clang; then
3254         _type=clang
3255         _ident=$($_cc --version | head -n1)
3256         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3257         _cflags_speed='-O3'
3258         _cflags_size='-Os'
3259     elif $_cc -V 2>&1 | grep -q Sun; then
3260         _type=suncc
3261         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3262         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3263         _DEPFLAGS='-xM1 -xc99'
3264         _ldflags='-std=c99'
3265         _cflags_speed='-O5'
3266         _cflags_size='-O5 -xspace'
3267         _flags_filter=suncc_flags
3268     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3269         _type=pathscale
3270         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3272         _cflags_speed='-O2'
3273         _cflags_size='-Os'
3274         _flags_filter='filter_out -Wdisabled-optimization'
3275     elif $_cc -v 2>&1 | grep -q Open64; then
3276         _type=open64
3277         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3278         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3279         _cflags_speed='-O2'
3280         _cflags_size='-Os'
3281         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3282     elif $_cc -V 2>&1 | grep -q Portland; then
3283         _type=pgi
3284         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3285         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3286         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3287         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3288         _cflags_noopt="-O"
3289         _flags_filter=pgi_flags
3290     elif $_cc 2>&1 | grep -q Microsoft; then
3291         _type=msvc
3292         _ident=$($cc 2>&1 | head -n1)
3293         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3294         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3295         _cflags_speed="-O2"
3296         _cflags_size="-O1"
3297         if $_cc 2>&1 | grep -q Linker; then
3298             _ld_o='-out:$@'
3299         else
3300             _ld_o='-Fe$@'
3301         fi
3302         _cc_o='-Fo$@'
3303         _cc_e='-P -Fi$@'
3304         _flags_filter=msvc_flags
3305         _ld_lib='lib%.a'
3306         _ld_path='-libpath:'
3307         _flags='-nologo'
3308         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3309         if [ $pfx = hostcc ]; then
3310             append _cflags -Dsnprintf=_snprintf
3311         fi
3312         disable stripping
3313     elif $_cc 2>&1 | grep -q Intel; then
3314         _type=icl
3315         _ident=$($cc 2>&1 | head -n1)
3316         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3317         # Not only is O3 broken on 13.x+ but it is slower on all previous
3318         # versions (tested) as well.
3319         _cflags_speed="-O2"
3320         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3321         if $_cc 2>&1 | grep -q Linker; then
3322             _ld_o='-out:$@'
3323         else
3324             _ld_o='-Fe$@'
3325         fi
3326         _cc_o='-Fo$@'
3327         _cc_e='-P'
3328         _flags_filter=icl_flags
3329         _ld_lib='lib%.a'
3330         _ld_path='-libpath:'
3331         # -Qdiag-error to make icl error when seeing certain unknown arguments
3332         _flags='-nologo -Qdiag-error:4044,10157'
3333         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3334         # with MSVC which enables it by default.
3335         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3336         if [ $pfx = hostcc ]; then
3337             append _cflags -Dsnprintf=_snprintf
3338         fi
3339     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3340         _type=cparser
3341         _ident=$($_cc --version | head -n1)
3342         _depflags='-MMD'
3343         _cflags_speed='-O4'
3344         _cflags_size='-O2'
3345         _flags_filter=cparser_flags
3346     fi
3347
3348     eval ${pfx}_type=\$_type
3349     eval ${pfx}_ident=\$_ident
3350 }
3351
3352 set_ccvars(){
3353     eval ${1}_C=\${_cc_c-\${${1}_C}}
3354     eval ${1}_E=\${_cc_e-\${${1}_E}}
3355     eval ${1}_O=\${_cc_o-\${${1}_O}}
3356
3357     if [ -n "$_depflags" ]; then
3358         eval ${1}_DEPFLAGS=\$_depflags
3359     else
3360         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3361         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3362         eval DEP${1}FLAGS=\$_flags
3363     fi
3364 }
3365
3366 probe_cc cc "$cc"
3367 cflags_filter=$_flags_filter
3368 cflags_speed=$_cflags_speed
3369 cflags_size=$_cflags_size
3370 cflags_noopt=$_cflags_noopt
3371 add_cflags $_flags $_cflags
3372 cc_ldflags=$_ldflags
3373 set_ccvars CC
3374
3375 probe_cc hostcc "$host_cc"
3376 host_cflags_filter=$_flags_filter
3377 add_host_cflags  $_flags $_cflags
3378 set_ccvars HOSTCC
3379
3380 test -n "$cc_type" && enable $cc_type ||
3381     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3382
3383 : ${as_default:=$cc}
3384 : ${dep_cc_default:=$cc}
3385 : ${ld_default:=$cc}
3386 : ${host_ld_default:=$host_cc}
3387 set_default ar as dep_cc ld host_ld windres
3388
3389 probe_cc as "$as"
3390 asflags_filter=$_flags_filter
3391 add_asflags $_flags $_cflags
3392 set_ccvars AS
3393
3394 probe_cc ld "$ld"
3395 ldflags_filter=$_flags_filter
3396 add_ldflags $_flags $_ldflags
3397 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3398 LD_O=${_ld_o-$LD_O}
3399 LD_LIB=${_ld_lib-$LD_LIB}
3400 LD_PATH=${_ld_path-$LD_PATH}
3401
3402 probe_cc hostld "$host_ld"
3403 host_ldflags_filter=$_flags_filter
3404 add_host_ldflags $_flags $_ldflags
3405 HOSTLD_O=${_ld_o-$HOSTLD_O}
3406
3407 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3408     probe_cc depcc "$dep_cc"
3409     CCDEP=${_DEPCMD:-$DEPCMD}
3410     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3411     DEPCCFLAGS=$_flags
3412 fi
3413
3414 if $ar 2>&1 | grep -q Microsoft; then
3415     arflags="-nologo"
3416     ar_o='-out:$@'
3417 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3418     arflags="rq"
3419     ar_o='$@'
3420 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3421     arflags='-Xany -r -c'
3422     ar_o='$@'
3423 else
3424     arflags="rc"
3425     ar_o='$@'
3426 fi
3427
3428 add_cflags $extra_cflags
3429 add_cxxflags $extra_cxxflags
3430 add_asflags $extra_cflags
3431
3432 if test -n "$sysroot"; then
3433     case "$cc_type" in
3434         gcc|llvm_gcc|clang)
3435             add_cppflags --sysroot="$sysroot"
3436             add_ldflags --sysroot="$sysroot"
3437 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3438             add_cppflags -isysroot "$sysroot"
3439             add_ldflags -isysroot "$sysroot"
3440         ;;
3441         tms470)
3442             add_cppflags -I"$sysinclude"
3443             add_ldflags  --sysroot="$sysroot"
3444         ;;
3445     esac
3446 fi
3447
3448 if test "$cpu" = host; then
3449     enabled cross_compile &&
3450         die "--cpu=host makes no sense when cross-compiling."
3451
3452     case "$cc_type" in
3453         gcc|llvm_gcc)
3454             check_native(){
3455                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3456                 sed -n "/cc1.*$1=/{
3457                             s/.*$1=\\([^ ]*\\).*/\\1/
3458                             p
3459                             q
3460                         }" $TMPE
3461             }
3462             cpu=$(check_native -march || check_native -mcpu)
3463         ;;
3464     esac
3465
3466     test "${cpu:-host}" = host &&
3467         die "--cpu=host not supported with compiler $cc"
3468 fi
3469
3470 # Deal with common $arch aliases
3471 case "$arch" in
3472     aarch64|arm64)
3473         arch="aarch64"
3474     ;;
3475     arm*|iPad*|iPhone*)
3476         arch="arm"
3477     ;;
3478     mips*|IP*)
3479         arch="mips"
3480     ;;
3481     parisc*|hppa*)
3482         arch="parisc"
3483     ;;
3484     "Power Macintosh"|ppc*|powerpc*)
3485         arch="ppc"
3486     ;;
3487     s390|s390x)
3488         arch="s390"
3489     ;;
3490     sh4|sh)
3491         arch="sh4"
3492     ;;
3493     sun4u|sparc*)
3494         arch="sparc"
3495     ;;
3496     tilegx|tile-gx)
3497         arch="tilegx"
3498     ;;
3499     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3500         arch="x86"
3501     ;;
3502 esac
3503
3504 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3505 enable $arch
3506
3507 # Add processor-specific flags
3508 if enabled aarch64; then
3509
3510     case $cpu in
3511         armv*)
3512             cpuflags="-march=$cpu"
3513         ;;
3514         *)
3515             cpuflags="-mcpu=$cpu"
3516         ;;
3517     esac
3518
3519 elif enabled alpha; then
3520
3521     cpuflags="-mcpu=$cpu"
3522
3523 elif enabled arm; then
3524
3525     check_arm_arch() {
3526         check_cpp_condition stddef.h \
3527             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3528             $cpuflags
3529     }
3530
3531     probe_arm_arch() {
3532         if   check_arm_arch 4;        then echo armv4;
3533         elif check_arm_arch 4T;       then echo armv4t;
3534         elif check_arm_arch 5;        then echo armv5;
3535         elif check_arm_arch 5E;       then echo armv5e;
3536         elif check_arm_arch 5T;       then echo armv5t;
3537         elif check_arm_arch 5TE;      then echo armv5te;
3538         elif check_arm_arch 5TEJ;     then echo armv5te;
3539         elif check_arm_arch 6;        then echo armv6;
3540         elif check_arm_arch 6J;       then echo armv6j;
3541         elif check_arm_arch 6K;       then echo armv6k;
3542         elif check_arm_arch 6Z;       then echo armv6z;
3543         elif check_arm_arch 6ZK;      then echo armv6zk;
3544         elif check_arm_arch 6T2;      then echo armv6t2;
3545         elif check_arm_arch 7;        then echo armv7;
3546         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3547         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3548         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3549         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3550         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3551         fi
3552     }
3553
3554     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3555
3556     case $cpu in
3557         armv*)
3558             cpuflags="-march=$cpu"
3559             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3560         ;;
3561         *)
3562             cpuflags="-mcpu=$cpu"
3563             case $cpu in
3564                 cortex-a*)                               subarch=armv7a  ;;
3565                 cortex-r*)                               subarch=armv7r  ;;
3566                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3567                 arm11*)                                  subarch=armv6   ;;
3568                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3569                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3570                 *)                             subarch=$(probe_arm_arch) ;;
3571             esac
3572         ;;
3573     esac
3574
3575     case "$subarch" in
3576         armv5t*)    enable fast_clz                ;;
3577         armv[6-8]*) enable fast_clz fast_unaligned ;;
3578     esac
3579
3580 elif enabled avr32; then
3581
3582     case $cpu in
3583         ap7[02]0[0-2])
3584             subarch="avr32_ap"
3585             cpuflags="-mpart=$cpu"
3586         ;;
3587         ap)
3588             subarch="avr32_ap"
3589             cpuflags="-march=$cpu"
3590         ;;
3591         uc3[ab]*)
3592             subarch="avr32_uc"
3593             cpuflags="-mcpu=$cpu"
3594         ;;
3595         uc)
3596             subarch="avr32_uc"
3597             cpuflags="-march=$cpu"
3598         ;;
3599     esac
3600
3601 elif enabled bfin; then
3602
3603     cpuflags="-mcpu=$cpu"
3604
3605 elif enabled mips; then
3606
3607     cpuflags="-march=$cpu"
3608
3609     case $cpu in
3610         24kc)
3611             disable mipsfpu
3612             disable mipsdspr1
3613             disable mipsdspr2
3614         ;;
3615         24kf*)
3616             disable mipsdspr1
3617             disable mipsdspr2
3618         ;;
3619         24kec|34kc|1004kc)
3620             disable mipsfpu
3621             disable mipsdspr2
3622         ;;
3623         24kef*|34kf*|1004kf*)
3624             disable mipsdspr2
3625         ;;
3626         74kc)
3627             disable mipsfpu
3628         ;;
3629     esac
3630
3631 elif enabled ppc; then
3632
3633     disable ldbrx
3634
3635     case $(tolower $cpu) in
3636         601|ppc601|powerpc601)
3637             cpuflags="-mcpu=601"
3638             disable altivec
3639         ;;
3640         603*|ppc603*|powerpc603*)
3641             cpuflags="-mcpu=603"
3642             disable altivec
3643         ;;
3644         604*|ppc604*|powerpc604*)
3645             cpuflags="-mcpu=604"
3646             disable altivec
3647         ;;
3648         g3|75*|ppc75*|powerpc75*)
3649             cpuflags="-mcpu=750"
3650             disable altivec
3651         ;;
3652         g4|745*|ppc745*|powerpc745*)
3653             cpuflags="-mcpu=7450"
3654         ;;
3655         74*|ppc74*|powerpc74*)
3656             cpuflags="-mcpu=7400"
3657         ;;
3658         g5|970|ppc970|powerpc970)
3659             cpuflags="-mcpu=970"
3660         ;;
3661         power[3-7]*)
3662             cpuflags="-mcpu=$cpu"
3663         ;;
3664         cell)
3665             cpuflags="-mcpu=cell"
3666             enable ldbrx
3667         ;;
3668         e500mc)
3669             cpuflags="-mcpu=e500mc"
3670             disable altivec
3671         ;;
3672         e500v2)
3673             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3674             disable altivec
3675             disable dcbzl
3676         ;;
3677         e500)
3678             cpuflags="-mcpu=8540 -mhard-float"
3679             disable altivec
3680             disable dcbzl
3681         ;;
3682     esac
3683
3684 elif enabled sparc; then
3685
3686     case $cpu in
3687         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3688             cpuflags="-mcpu=$cpu"
3689         ;;
3690         ultrasparc*|niagara[234])
3691             cpuflags="-mcpu=$cpu"
3692         ;;
3693     esac
3694
3695 elif enabled x86; then
3696
3697     case $cpu in
3698         i[345]86|pentium)
3699             cpuflags="-march=$cpu"
3700             disable mmx
3701         ;;
3702         # targets that do NOT support nopl and conditional mov (cmov)
3703         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3704             cpuflags="-march=$cpu"
3705             disable i686
3706         ;;
3707         # targets that do support nopl and conditional mov (cmov)
3708         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3709             cpuflags="-march=$cpu"
3710             enable i686
3711             enable fast_cmov
3712         ;;
3713         # targets that do support conditional mov but on which it's slow
3714         pentium4|pentium4m|prescott|nocona)
3715             cpuflags="-march=$cpu"
3716             enable i686
3717             disable fast_cmov
3718         ;;
3719     esac
3720
3721 fi
3722
3723 if [ "$cpu" != generic ]; then
3724     add_cflags  $cpuflags
3725     add_asflags $cpuflags
3726 fi
3727
3728 # compiler sanity check
3729 check_exec <<EOF
3730 int main(void){ return 0; }
3731 EOF
3732 if test "$?" != 0; then
3733     echo "$cc is unable to create an executable file."
3734     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3735         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3736         echo "Only do this if you know what cross compiling means."
3737     fi
3738     die "C compiler test failed."
3739 fi
3740
3741 add_cppflags -D_ISOC99_SOURCE
3742 add_cxxflags -D__STDC_CONSTANT_MACROS
3743 check_cflags -std=c99
3744 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3745 #include <stdlib.h>
3746 EOF
3747 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3748 #include <stdlib.h>
3749 EOF
3750
3751 add_host_cppflags -D_ISOC99_SOURCE
3752 check_host_cflags -std=c99
3753 check_host_cflags -Wall
3754 check_host_cflags -O3
3755
3756 check_64bit(){
3757     arch32=$1
3758     arch64=$2
3759     expr=$3
3760     check_code cc "" "int test[2*($expr) - 1]" &&
3761         subarch=$arch64 || subarch=$arch32
3762 }
3763
3764 case "$arch" in
3765     aarch64|alpha|ia64)
3766         spic=$shared
3767     ;;
3768     mips)
3769         check_64bit mips mips64 '_MIPS_SIM > 1'
3770         spic=$shared
3771     ;;
3772     parisc)
3773         check_64bit parisc parisc64 'sizeof(void *) > 4'
3774         spic=$shared
3775     ;;
3776     ppc)
3777         check_64bit ppc ppc64 'sizeof(void *) > 4'
3778         spic=$shared
3779     ;;
3780     s390)
3781         check_64bit s390 s390x 'sizeof(void *) > 4'
3782         spic=$shared
3783     ;;
3784     sparc)
3785         check_64bit sparc sparc64 'sizeof(void *) > 4'
3786         spic=$shared
3787     ;;
3788     x86)
3789         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3790         if test "$subarch" = "x86_64"; then
3791             spic=$shared
3792         fi
3793     ;;
3794     ppc)
3795         check_cc <<EOF && subarch="ppc64"
3796         int test[(int)sizeof(char*) - 7];
3797 EOF
3798     ;;
3799 esac
3800
3801 enable $subarch
3802 enabled spic && enable_weak pic
3803
3804 # OS specific
3805 case $target_os in
3806     aix)
3807         SHFLAGS=-shared
3808         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3809         enabled shared && add_ldflags -Wl,-brtl
3810         ;;
3811     haiku)
3812         prefix_default="/boot/common"
3813         network_extralibs="-lnetwork"
3814         host_libs=
3815         ;;
3816     sunos)
3817         SHFLAGS='-shared -Wl,-h,$$(@F)'
3818         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3819         network_extralibs="-lsocket -lnsl"
3820         # When using suncc to build, the Solaris linker will mark
3821         # an executable with each instruction set encountered by
3822         # the Solaris assembler.  As our libraries contain their own
3823         # guards for processor-specific code, instead suppress
3824         # generation of the HWCAPS ELF section on Solaris x86 only.
3825         enabled_all suncc x86 &&
3826             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3827             add_ldflags -Wl,-M,mapfile
3828         nm_default='nm -P -g'
3829         ;;
3830     netbsd)
3831         disable symver
3832         oss_indev_extralibs="-lossaudio"
3833         oss_outdev_extralibs="-lossaudio"
3834         enabled gcc || check_ldflags -Wl,-zmuldefs
3835         ;;
3836     openbsd|bitrig)
3837         disable symver
3838         SHFLAGS='-shared'
3839         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3840         SLIB_INSTALL_LINKS=
3841         oss_indev_extralibs="-lossaudio"
3842         oss_outdev_extralibs="-lossaudio"
3843         ;;
3844     dragonfly)
3845         disable symver
3846         ;;
3847     freebsd)
3848         ;;
3849     bsd/os)
3850         add_extralibs -lpoll -lgnugetopt
3851         strip="strip -d"
3852         ;;
3853     darwin)
3854         gas="gas-preprocessor.pl $cc"
3855         enabled ppc && add_asflags -force_cpusubtype_ALL
3856         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3857         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3858         strip="${strip} -x"
3859         add_ldflags -Wl,-dynamic,-search_paths_first
3860         SLIBSUF=".dylib"
3861         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3862         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3863         objformat="macho"
3864         enabled x86_64 && objformat="macho64"
3865         enabled_any pic shared ||
3866             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3867         ;;
3868     mingw32*)
3869         if test $target_os = "mingw32ce"; then
3870             disable network
3871         else
3872             target_os=mingw32
3873         fi
3874         LIBTARGET=i386
3875         if enabled x86_64; then
3876             LIBTARGET="i386:x86-64"
3877         elif enabled arm; then
3878             LIBTARGET=arm-wince
3879         fi
3880         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3881         check_ldflags -Wl,--nxcompat
3882         check_ldflags -Wl,--dynamicbase
3883         shlibdir_default="$bindir_default"
3884         SLIBPREF=""
3885         SLIBSUF=".dll"
3886         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3887         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3888         dlltool="${cross_prefix}dlltool"
3889         if check_cmd lib.exe -list; then
3890             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3891             if enabled x86_64; then
3892                 LIBTARGET=x64
3893             fi
3894         elif check_cmd $dlltool --version; then
3895             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3896         fi
3897         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3898         SLIB_INSTALL_LINKS=
3899         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3900         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3901         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3902         objformat="win32"
3903         ranlib=:
3904         enable dos_paths
3905         ;;
3906     win32|win64)
3907         disable symver
3908         if enabled shared; then
3909             # Link to the import library instead of the normal static library
3910             # for shared libs.
3911             LD_LIB='%.lib'
3912             # Cannot build both shared and static libs with MSVC or icl.
3913             disable static
3914         fi
3915         shlibdir_default="$bindir_default"
3916         SLIBPREF=""
3917         SLIBSUF=".dll"
3918         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3919         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3920         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3921         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3922         SLIB_INSTALL_LINKS=
3923         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3924         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3925         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3926         objformat="win32"
3927         ranlib=:
3928         enable dos_paths
3929         ;;
3930     cygwin*)
3931         target_os=cygwin
3932         shlibdir_default="$bindir_default"
3933         SLIBPREF="cyg"
3934         SLIBSUF=".dll"
3935         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3936         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3937         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3938         SLIB_INSTALL_LINKS=
3939         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3940         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3941         objformat="win32"
3942         enable dos_paths
3943         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3944         ;;
3945     *-dos|freedos|opendos)
3946         network_extralibs="-lsocket"
3947         objformat="coff"
3948         enable dos_paths
3949         add_cppflags -U__STRICT_ANSI__
3950         ;;
3951     linux)
3952         enable dv1394
3953         ;;
3954     irix*)
3955         target_os=irix
3956         ranlib="echo ignoring ranlib"
3957         ;;
3958     os/2*)
3959         strip="lxlite -CS"
3960         ln_s="cp -f"
3961         objformat="aout"
3962         add_cppflags -D_GNU_SOURCE
3963         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3964         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3965         LIBSUF="_s.a"
3966         SLIBPREF=""
3967         SLIBSUF=".dll"
3968         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3969         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3970         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3971             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3972             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3973             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3974             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3975             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3976         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3977             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3978         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3979         enable dos_paths
3980         enable_weak os2threads
3981         ;;
3982     gnu/kfreebsd)
3983         add_cppflags -D_BSD_SOURCE
3984         ;;
3985     gnu)
3986         ;;
3987     qnx)
3988         add_cppflags -D_QNX_SOURCE
3989         network_extralibs="-lsocket"
3990         ;;
3991     symbian)
3992         SLIBSUF=".dll"
3993         enable dos_paths
3994         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3995         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3996         add_ldflags -Wl,--target1-abs,--no-undefined \
3997                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3998                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3999         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4000                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4001                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4002         ;;
4003     osf1)
4004         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4005         ;;
4006     minix)
4007         ;;
4008     plan9)
4009         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4010                      -D_REENTRANT_SOURCE        \
4011                      -D_RESEARCH_SOURCE         \
4012                      -DFD_SETSIZE=96            \
4013                      -DHAVE_SOCK_OPTS
4014         add_compat strtod.o strtod=avpriv_strtod
4015         network_extralibs='-lbsd'
4016         exeobjs=compat/plan9/main.o
4017         disable ffserver
4018         cp_f='cp'
4019         ;;
4020     none)
4021         ;;
4022     *)
4023         die "Unknown OS '$target_os'."
4024         ;;
4025 esac
4026
4027 # determine libc flavour
4028
4029 probe_libc(){
4030     pfx=$1
4031     pfx_no_=${pfx%_}
4032     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4033     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4034         eval ${pfx}libc_type=uclibc
4035         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4036     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4037         eval ${pfx}libc_type=glibc
4038         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4039     # MinGW headers can be installed on Cygwin, so check for newlib first.
4040     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4041         eval ${pfx}libc_type=newlib
4042         add_${pfx}cppflags -U__STRICT_ANSI__
4043     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4044     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4045         eval ${pfx}libc_type=mingw64
4046         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4047             add_compat msvcrt/snprintf.o
4048             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4049         fi
4050         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4051         eval test \$${pfx_no_}cc_type = "gcc" &&
4052             add_${pfx}cppflags -D__printf__=__gnu_printf__
4053     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4054          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4055         eval ${pfx}libc_type=mingw32
4056         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \