Fix compilation with --disable-everything --enable-muxer=avi --disable-network.
[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     gas
1855     host_cc
1856     host_cflags
1857     host_ld
1858     host_ldflags
1859     host_libs
1860     host_os
1861     install
1862     ld
1863     logfile
1864     malloc_prefix
1865     nm
1866     optflags
1867     pkg_config
1868     pkg_config_flags
1869     progs_suffix
1870     random_seed
1871     samples
1872     strip
1873     sysinclude
1874     sysroot
1875     target_exec
1876     target_os
1877     target_path
1878     target_samples
1879     tempprefix
1880     toolchain
1881     valgrind
1882     yasmexe
1883 "
1884
1885 CMDLINE_APPEND="
1886     extra_cflags
1887     extra_cxxflags
1888     host_cppflags
1889 "
1890
1891 # code dependency declarations
1892
1893 # architecture extensions
1894
1895 armv5te_deps="arm"
1896 armv6_deps="arm"
1897 armv6t2_deps="arm"
1898 armv8_deps="aarch64"
1899 neon_deps_any="aarch64 arm"
1900 vfp_deps_any="aarch64 arm"
1901 vfpv3_deps="vfp"
1902
1903 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1904
1905 mipsfpu_deps="mips"
1906 mips32r2_deps="mips"
1907 mipsdspr1_deps="mips"
1908 mipsdspr2_deps="mips"
1909
1910 altivec_deps="ppc"
1911 ppc4xx_deps="ppc"
1912
1913 cpunop_deps="i686"
1914 x86_64_select="i686"
1915 x86_64_suggest="fast_cmov"
1916
1917 amd3dnow_deps="mmx"
1918 amd3dnowext_deps="amd3dnow"
1919 i686_deps="x86"
1920 mmx_deps="x86"
1921 mmxext_deps="mmx"
1922 sse_deps="mmxext"
1923 sse2_deps="sse"
1924 sse3_deps="sse2"
1925 ssse3_deps="sse3"
1926 sse4_deps="ssse3"
1927 sse42_deps="sse4"
1928 avx_deps="sse42"
1929 xop_deps="avx"
1930 fma3_deps="avx"
1931 fma4_deps="avx"
1932 avx2_deps="avx"
1933
1934 mmx_external_deps="yasm"
1935 mmx_inline_deps="inline_asm"
1936 mmx_suggest="mmx_external mmx_inline"
1937
1938 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1939     eval dep=\$${ext}_deps
1940     eval ${ext}_external_deps='"${dep}_external"'
1941     eval ${ext}_inline_deps='"${dep}_inline"'
1942     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1943 done
1944
1945 aligned_stack_if_any="aarch64 ppc x86"
1946 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1947 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1948 fast_unaligned_if_any="aarch64 ppc x86"
1949
1950 need_memalign="altivec neon sse"
1951
1952 # system capabilities
1953 log2_deps="!libc_msvcrt"
1954
1955 symver_if_any="symver_asm_label symver_gnu_asm"
1956
1957 # threading support
1958 atomics_gcc_if="sync_val_compare_and_swap"
1959 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1960 atomics_win32_if="MemoryBarrier"
1961 atomics_native_if_any="$ATOMICS_LIST"
1962 w32threads_deps="atomics_native"
1963 threads_if_any="$THREADS_LIST"
1964
1965 # subsystems
1966 dct_select="rdft"
1967 error_resilience_select="dsputil"
1968 frame_thread_encoder_deps="encoders threads"
1969 mdct_select="fft"
1970 rdft_select="fft"
1971 mpegaudio_select="mpegaudiodsp"
1972 mpegaudiodsp_select="dct"
1973 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1974 mpegvideoenc_select="dsputil mpegvideo"
1975
1976 # decoders / encoders
1977 aac_decoder_select="mdct sinewin"
1978 aac_encoder_select="audio_frame_queue mdct sinewin"
1979 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1980 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1981 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1982 ac3_encoder_select="mdct ac3dsp dsputil"
1983 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1984 aic_decoder_select="dsputil golomb"
1985 alac_encoder_select="lpc"
1986 als_decoder_select="dsputil"
1987 amrnb_decoder_select="lsp"
1988 amrwb_decoder_select="lsp"
1989 amv_decoder_select="sp5x_decoder exif"
1990 amv_encoder_select="aandcttables"
1991 ape_decoder_select="dsputil"
1992 asv1_decoder_select="dsputil"
1993 asv1_encoder_select="dsputil"
1994 asv2_decoder_select="dsputil"
1995 asv2_encoder_select="dsputil"
1996 atrac1_decoder_select="mdct sinewin"
1997 atrac3_decoder_select="mdct"
1998 atrac3p_decoder_select="mdct sinewin"
1999 avrn_decoder_select="exif"
2000 bink_decoder_select="dsputil hpeldsp"
2001 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2002 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2003 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2004 cllc_decoder_select="dsputil"
2005 comfortnoise_encoder_select="lpc"
2006 cook_decoder_select="dsputil mdct sinewin"
2007 cscd_decoder_select="lzo"
2008 cscd_decoder_suggest="zlib"
2009 dca_decoder_select="mdct"
2010 dirac_decoder_select="dsputil dwt golomb videodsp"
2011 dnxhd_decoder_select="dsputil"
2012 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2013 dvvideo_decoder_select="dsputil"
2014 dvvideo_encoder_select="dsputil"
2015 dxa_decoder_select="zlib"
2016 eac3_decoder_select="ac3_decoder"
2017 eac3_encoder_select="ac3_encoder"
2018 eamad_decoder_select="aandcttables dsputil mpegvideo"
2019 eatgq_decoder_select="aandcttables"
2020 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2021 exr_decoder_select="zlib"
2022 ffv1_decoder_select="golomb rangecoder"
2023 ffv1_encoder_select="rangecoder"
2024 ffvhuff_decoder_select="huffyuv_decoder"
2025 ffvhuff_encoder_select="huffyuv_encoder"
2026 fic_decoder_select="dsputil golomb"
2027 flac_decoder_select="golomb"
2028 flac_encoder_select="dsputil golomb lpc"
2029 flashsv_decoder_select="zlib"
2030 flashsv_encoder_select="zlib"
2031 flashsv2_encoder_select="zlib"
2032 flashsv2_decoder_select="zlib"
2033 flv_decoder_select="h263_decoder"
2034 flv_encoder_select="h263_encoder"
2035 fourxm_decoder_select="dsputil"
2036 fraps_decoder_select="dsputil huffman"
2037 g2m_decoder_select="dsputil zlib"
2038 g729_decoder_select="dsputil"
2039 h261_decoder_select="error_resilience mpegvideo"
2040 h261_encoder_select="aandcttables mpegvideoenc"
2041 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2042 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2043 h263i_decoder_select="h263_decoder"
2044 h263p_encoder_select="h263_encoder"
2045 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2046 h264_decoder_suggest="error_resilience"
2047 hevc_decoder_select="cabac dsputil golomb videodsp"
2048 huffyuv_decoder_select="dsputil llviddsp"
2049 huffyuv_encoder_select="dsputil huffman llviddsp"
2050 iac_decoder_select="imc_decoder"
2051 imc_decoder_select="dsputil fft mdct sinewin"
2052 indeo3_decoder_select="hpeldsp"
2053 interplay_video_decoder_select="hpeldsp"
2054 jpegls_decoder_select="golomb mjpeg_decoder"
2055 jpegls_encoder_select="golomb"
2056 jv_decoder_select="dsputil"
2057 lagarith_decoder_select="dsputil"
2058 ljpeg_encoder_select="aandcttables mpegvideoenc"
2059 loco_decoder_select="golomb"
2060 mdec_decoder_select="dsputil error_resilience mpegvideo"
2061 metasound_decoder_select="lsp mdct sinewin"
2062 mimic_decoder_select="dsputil hpeldsp"
2063 mjpeg_decoder_select="dsputil hpeldsp exif"
2064 mjpeg_encoder_select="aandcttables mpegvideoenc"
2065 mjpegb_decoder_select="mjpeg_decoder"
2066 mlp_decoder_select="mlp_parser"
2067 motionpixels_decoder_select="dsputil"
2068 mp1_decoder_select="mpegaudio"
2069 mp1float_decoder_select="mpegaudio"
2070 mp2_decoder_select="mpegaudio"
2071 mp2float_decoder_select="mpegaudio"
2072 mp3_decoder_select="mpegaudio"
2073 mp3adu_decoder_select="mpegaudio"
2074 mp3adufloat_decoder_select="mpegaudio"
2075 mp3float_decoder_select="mpegaudio"
2076 mp3on4_decoder_select="mpegaudio"
2077 mp3on4float_decoder_select="mpegaudio"
2078 mpc7_decoder_select="dsputil mpegaudiodsp"
2079 mpc8_decoder_select="mpegaudiodsp"
2080 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2081 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2082 mpeg1video_decoder_select="error_resilience mpegvideo"
2083 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2084 mpeg2video_decoder_select="error_resilience mpegvideo"
2085 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2086 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2087 mpeg4_encoder_select="h263_encoder"
2088 msmpeg4v1_decoder_select="h263_decoder"
2089 msmpeg4v2_decoder_select="h263_decoder"
2090 msmpeg4v2_encoder_select="h263_encoder"
2091 msmpeg4v3_decoder_select="h263_decoder"
2092 msmpeg4v3_encoder_select="h263_encoder"
2093 mss2_decoder_select="error_resilience vc1_decoder"
2094 mxpeg_decoder_select="mjpeg_decoder"
2095 nellymoser_decoder_select="mdct sinewin"
2096 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2097 nuv_decoder_select="dsputil lzo"
2098 png_decoder_select="zlib"
2099 png_encoder_select="dsputil zlib"
2100 prores_decoder_select="dsputil"
2101 prores_encoder_select="dsputil"
2102 qcelp_decoder_select="lsp"
2103 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2104 ra_144_encoder_select="audio_frame_queue lpc"
2105 ralf_decoder_select="golomb"
2106 rawvideo_decoder_select="dsputil"
2107 rtjpeg_decoder_select="dsputil"
2108 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2109 rv10_encoder_select="h263_encoder"
2110 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2111 rv20_encoder_select="h263_encoder"
2112 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2113 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2114 shorten_decoder_select="golomb"
2115 sipr_decoder_select="lsp"
2116 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2117 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2118 sonic_decoder_select="golomb rangecoder"
2119 sonic_encoder_select="golomb rangecoder"
2120 sonic_ls_encoder_select="golomb"
2121 sp5x_decoder_select="mjpeg_decoder"
2122 svq1_decoder_select="hpeldsp"
2123 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2124 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2125 svq3_decoder_suggest="zlib"
2126 tak_decoder_select="dsputil"
2127 theora_decoder_select="vp3_decoder"
2128 thp_decoder_select="mjpeg_decoder"
2129 tiff_decoder_suggest="zlib"
2130 tiff_encoder_suggest="zlib"
2131 truehd_decoder_select="mlp_parser"
2132 truemotion2_decoder_select="dsputil"
2133 truespeech_decoder_select="dsputil"
2134 tscc_decoder_select="zlib"
2135 twinvq_decoder_select="mdct lsp sinewin"
2136 utvideo_decoder_select="dsputil"
2137 utvideo_encoder_select="dsputil huffman"
2138 vble_decoder_select="dsputil"
2139 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2140 vc1image_decoder_select="vc1_decoder"
2141 vorbis_decoder_select="mdct"
2142 vorbis_encoder_select="mdct"
2143 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2144 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2145 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2146 vp6a_decoder_select="vp6_decoder"
2147 vp6f_decoder_select="vp6_decoder"
2148 vp7_decoder_select="h264pred videodsp"
2149 vp8_decoder_select="h264pred videodsp"
2150 vp9_decoder_select="videodsp"
2151 webp_decoder_select="vp8_decoder"
2152 wmapro_decoder_select="mdct sinewin"
2153 wmav1_decoder_select="mdct sinewin"
2154 wmav1_encoder_select="mdct sinewin"
2155 wmav2_decoder_select="mdct sinewin"
2156 wmav2_encoder_select="mdct sinewin"
2157 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2158 wmv1_decoder_select="h263_decoder"
2159 wmv1_encoder_select="h263_encoder"
2160 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2161 wmv2_encoder_select="h263_encoder"
2162 wmv3_decoder_select="vc1_decoder"
2163 wmv3image_decoder_select="wmv3_decoder"
2164 zerocodec_decoder_select="zlib"
2165 zlib_decoder_select="zlib"
2166 zlib_encoder_select="zlib"
2167 zmbv_decoder_select="zlib"
2168 zmbv_encoder_select="zlib"
2169
2170 # hardware accelerators
2171 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2172 dxva2_deps="dxva2api_h"
2173 vaapi_deps="va_va_h"
2174 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2175 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2176 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2177 xvmc_deps="X11_extensions_XvMClib_h"
2178
2179 h263_vaapi_hwaccel_deps="vaapi"
2180 h263_vaapi_hwaccel_select="h263_decoder"
2181 h263_vdpau_hwaccel_deps="vdpau"
2182 h263_vdpau_hwaccel_select="h263_decoder"
2183 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2184 h264_dxva2_hwaccel_deps="dxva2"
2185 h264_dxva2_hwaccel_select="h264_decoder"
2186 h264_vaapi_hwaccel_deps="vaapi"
2187 h264_vaapi_hwaccel_select="h264_decoder"
2188 h264_vda_decoder_deps="vda"
2189 h264_vda_decoder_select="h264_decoder"
2190 h264_vda_hwaccel_deps="vda"
2191 h264_vda_hwaccel_select="h264_decoder"
2192 h264_vdpau_decoder_deps="vdpau"
2193 h264_vdpau_decoder_select="h264_decoder"
2194 h264_vdpau_hwaccel_deps="vdpau"
2195 h264_vdpau_hwaccel_select="h264_decoder"
2196 mpeg_vdpau_decoder_deps="vdpau"
2197 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2198 mpeg_xvmc_hwaccel_deps="xvmc"
2199 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2200 mpeg1_vdpau_decoder_deps="vdpau"
2201 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2202 mpeg1_vdpau_hwaccel_deps="vdpau"
2203 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2204 mpeg1_xvmc_hwaccel_deps="xvmc"
2205 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2206 mpeg2_crystalhd_decoder_select="crystalhd"
2207 mpeg2_dxva2_hwaccel_deps="dxva2"
2208 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_vaapi_hwaccel_deps="vaapi"
2210 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2211 mpeg2_vdpau_hwaccel_deps="vdpau"
2212 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2213 mpeg2_xvmc_hwaccel_deps="xvmc"
2214 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2215 mpeg4_crystalhd_decoder_select="crystalhd"
2216 mpeg4_vaapi_hwaccel_deps="vaapi"
2217 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2218 mpeg4_vdpau_decoder_deps="vdpau"
2219 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2220 mpeg4_vdpau_hwaccel_deps="vdpau"
2221 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2222 msmpeg4_crystalhd_decoder_select="crystalhd"
2223 vc1_crystalhd_decoder_select="crystalhd"
2224 vc1_dxva2_hwaccel_deps="dxva2"
2225 vc1_dxva2_hwaccel_select="vc1_decoder"
2226 vc1_vaapi_hwaccel_deps="vaapi"
2227 vc1_vaapi_hwaccel_select="vc1_decoder"
2228 vc1_vdpau_decoder_deps="vdpau"
2229 vc1_vdpau_decoder_select="vc1_decoder"
2230 vc1_vdpau_hwaccel_deps="vdpau"
2231 vc1_vdpau_hwaccel_select="vc1_decoder"
2232 wmv3_crystalhd_decoder_select="crystalhd"
2233 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2234 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2235 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2236 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2237
2238 # parsers
2239 h264_parser_select="h264_decoder"
2240 hevc_parser_select="hevc_decoder"
2241 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2242 mpegvideo_parser_select="error_resilience mpegvideo"
2243 vc1_parser_select="mpegvideo"
2244
2245 # external libraries
2246 libaacplus_encoder_deps="libaacplus"
2247 libcelt_decoder_deps="libcelt"
2248 libfaac_encoder_deps="libfaac"
2249 libfaac_encoder_select="audio_frame_queue"
2250 libfdk_aac_decoder_deps="libfdk_aac"
2251 libfdk_aac_encoder_deps="libfdk_aac"
2252 libfdk_aac_encoder_select="audio_frame_queue"
2253 libgme_demuxer_deps="libgme"
2254 libgsm_decoder_deps="libgsm"
2255 libgsm_encoder_deps="libgsm"
2256 libgsm_ms_decoder_deps="libgsm"
2257 libgsm_ms_encoder_deps="libgsm"
2258 libilbc_decoder_deps="libilbc"
2259 libilbc_encoder_deps="libilbc"
2260 libmodplug_demuxer_deps="libmodplug"
2261 libmp3lame_encoder_deps="libmp3lame"
2262 libmp3lame_encoder_select="audio_frame_queue"
2263 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2264 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2265 libopencore_amrnb_encoder_select="audio_frame_queue"
2266 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2267 libopenjpeg_decoder_deps="libopenjpeg"
2268 libopenjpeg_encoder_deps="libopenjpeg"
2269 libopus_decoder_deps="libopus"
2270 libopus_encoder_deps="libopus"
2271 libopus_encoder_select="audio_frame_queue"
2272 libquvi_demuxer_deps="libquvi"
2273 libschroedinger_decoder_deps="libschroedinger"
2274 libschroedinger_encoder_deps="libschroedinger"
2275 libshine_encoder_deps="libshine"
2276 libshine_encoder_select="audio_frame_queue"
2277 libspeex_decoder_deps="libspeex"
2278 libspeex_encoder_deps="libspeex"
2279 libspeex_encoder_select="audio_frame_queue"
2280 libstagefright_h264_decoder_deps="libstagefright_h264"
2281 libtheora_encoder_deps="libtheora"
2282 libtwolame_encoder_deps="libtwolame"
2283 libvo_aacenc_encoder_deps="libvo_aacenc"
2284 libvo_aacenc_encoder_select="audio_frame_queue"
2285 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2286 libvorbis_decoder_deps="libvorbis"
2287 libvorbis_encoder_deps="libvorbis"
2288 libvorbis_encoder_select="audio_frame_queue"
2289 libvpx_vp8_decoder_deps="libvpx"
2290 libvpx_vp8_encoder_deps="libvpx"
2291 libvpx_vp9_decoder_deps="libvpx"
2292 libvpx_vp9_encoder_deps="libvpx"
2293 libwavpack_encoder_deps="libwavpack"
2294 libwebp_encoder_deps="libwebp"
2295 libx264_encoder_deps="libx264"
2296 libx264rgb_encoder_deps="libx264"
2297 libx265_encoder_deps="libx265"
2298 libxavs_encoder_deps="libxavs"
2299 libxvid_encoder_deps="libxvid"
2300 libutvideo_decoder_deps="libutvideo"
2301 libutvideo_encoder_deps="libutvideo"
2302 libzvbi_teletext_decoder_deps="libzvbi"
2303
2304 # demuxers / muxers
2305 ac3_demuxer_select="ac3_parser"
2306 asf_demuxer_select="riffdec"
2307 asf_muxer_select="riffenc"
2308 asf_stream_muxer_select="asf_muxer"
2309 avi_demuxer_select="riffdec exif"
2310 avi_muxer_select="riffenc"
2311 avisynth_demuxer_deps="avisynth"
2312 avisynth_demuxer_select="riffdec"
2313 caf_demuxer_select="riffdec"
2314 dirac_demuxer_select="dirac_parser"
2315 dts_demuxer_select="dca_parser"
2316 dtshd_demuxer_select="dca_parser"
2317 dxa_demuxer_select="riffdec"
2318 eac3_demuxer_select="ac3_parser"
2319 f4v_muxer_select="mov_muxer"
2320 flac_demuxer_select="flac_parser"
2321 hds_muxer_select="flv_muxer"
2322 hls_muxer_select="mpegts_muxer"
2323 ipod_muxer_select="mov_muxer"
2324 ismv_muxer_select="mov_muxer"
2325 libnut_demuxer_deps="libnut"
2326 libnut_muxer_deps="libnut"
2327 matroska_audio_muxer_select="matroska_muxer"
2328 matroska_demuxer_select="riffdec"
2329 matroska_demuxer_suggest="bzlib lzo zlib"
2330 matroska_muxer_select="riffenc"
2331 mmf_muxer_select="riffenc"
2332 mov_demuxer_select="riffdec"
2333 mov_demuxer_suggest="zlib"
2334 mov_muxer_select="riffenc rtpenc_chain"
2335 mp3_demuxer_select="mpegaudio_parser"
2336 mp4_muxer_select="mov_muxer"
2337 mpegts_muxer_select="adts_muxer latm_muxer"
2338 mpegtsraw_demuxer_select="mpegts_demuxer"
2339 mxf_d10_muxer_select="mxf_muxer"
2340 nut_muxer_select="riffenc"
2341 nuv_demuxer_select="riffdec"
2342 ogg_demuxer_select="golomb"
2343 psp_muxer_select="mov_muxer"
2344 rtp_demuxer_select="sdp_demuxer"
2345 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2346 rtsp_demuxer_select="http_protocol rtpdec"
2347 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2348 sap_demuxer_select="sdp_demuxer"
2349 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2350 sdp_demuxer_select="rtpdec"
2351 smoothstreaming_muxer_select="ismv_muxer"
2352 spdif_muxer_select="aac_parser"
2353 tak_demuxer_select="tak_parser"
2354 tg2_muxer_select="mov_muxer"
2355 tgp_muxer_select="mov_muxer"
2356 vobsub_demuxer_select="mpegps_demuxer"
2357 w64_demuxer_select="wav_demuxer"
2358 w64_muxer_select="wav_muxer"
2359 wav_demuxer_select="riffdec"
2360 wav_muxer_select="riffenc"
2361 webm_muxer_select="riffenc"
2362 wtv_demuxer_select="riffdec"
2363 wtv_muxer_select="riffenc"
2364 xmv_demuxer_select="riffdec"
2365 xwma_demuxer_select="riffdec"
2366
2367 # indevs / outdevs
2368 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2369 alsa_outdev_deps="alsa_asoundlib_h"
2370 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2371 avfoundation_indev_select="avfoundation"
2372 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2373 caca_outdev_deps="libcaca"
2374 decklink_outdev_deps="decklink pthreads"
2375 decklink_outdev_extralibs="-lstdc++"
2376 dshow_indev_deps="IBaseFilter"
2377 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2378 dv1394_indev_deps="dv1394"
2379 dv1394_indev_select="dv_demuxer"
2380 fbdev_indev_deps="linux_fb_h"
2381 fbdev_outdev_deps="linux_fb_h"
2382 gdigrab_indev_deps="CreateDIBSection"
2383 gdigrab_indev_extralibs="-lgdi32"
2384 gdigrab_indev_select="bmp_decoder"
2385 iec61883_indev_deps="libiec61883"
2386 jack_indev_deps="jack_jack_h sem_timedwait"
2387 lavfi_indev_deps="avfilter"
2388 libcdio_indev_deps="libcdio"
2389 libdc1394_indev_deps="libdc1394"
2390 libv4l2_indev_deps="libv4l2"
2391 openal_indev_deps="openal"
2392 opengl_outdev_deps="opengl"
2393 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2394 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2395 pulse_indev_deps="libpulse"
2396 pulse_outdev_deps="libpulse"
2397 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2398 qtkit_indev_select="qtkit"
2399 sdl_outdev_deps="sdl"
2400 sndio_indev_deps="sndio_h"
2401 sndio_outdev_deps="sndio_h"
2402 v4l_indev_deps="linux_videodev_h"
2403 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2404 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2405 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2406 vfwcap_indev_extralibs="-lavicap32"
2407 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2408 xv_outdev_extralibs="-lXv -lX11 -lXext"
2409 x11grab_indev_deps="x11grab"
2410
2411 # protocols
2412 bluray_protocol_deps="libbluray"
2413 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2414 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2415 ffrtmpcrypt_protocol_select="tcp_protocol"
2416 ffrtmphttp_protocol_deps="!librtmp_protocol"
2417 ffrtmphttp_protocol_select="http_protocol"
2418 ftp_protocol_select="tcp_protocol"
2419 gopher_protocol_select="network"
2420 http_protocol_select="tcp_protocol"
2421 httpproxy_protocol_select="tcp_protocol"
2422 https_protocol_select="tls_protocol"
2423 librtmp_protocol_deps="librtmp"
2424 librtmpe_protocol_deps="librtmp"
2425 librtmps_protocol_deps="librtmp"
2426 librtmpt_protocol_deps="librtmp"
2427 librtmpte_protocol_deps="librtmp"
2428 libssh_protocol_deps="libssh"
2429 mmsh_protocol_select="http_protocol"
2430 mmst_protocol_select="network"
2431 rtmp_protocol_deps="!librtmp_protocol"
2432 rtmp_protocol_select="tcp_protocol"
2433 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2434 rtmps_protocol_deps="!librtmp_protocol"
2435 rtmps_protocol_select="tls_protocol"
2436 rtmpt_protocol_select="ffrtmphttp_protocol"
2437 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2438 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2439 rtp_protocol_select="udp_protocol"
2440 sctp_protocol_deps="struct_sctp_event_subscribe"
2441 sctp_protocol_select="network"
2442 srtp_protocol_select="rtp_protocol"
2443 tcp_protocol_select="network"
2444 tls_protocol_deps_any="openssl gnutls"
2445 tls_protocol_select="tcp_protocol"
2446 udp_protocol_select="network"
2447 unix_protocol_deps="sys_un_h"
2448 unix_protocol_select="network"
2449
2450 # filters
2451 aconvert_filter_deps="swresample"
2452 amovie_filter_deps="avcodec avformat"
2453 aresample_filter_deps="swresample"
2454 ass_filter_deps="libass"
2455 asyncts_filter_deps="avresample"
2456 atempo_filter_deps="avcodec"
2457 atempo_filter_select="rdft"
2458 azmq_filter_deps="libzmq"
2459 blackframe_filter_deps="gpl"
2460 boxblur_filter_deps="gpl"
2461 colormatrix_filter_deps="gpl"
2462 cropdetect_filter_deps="gpl"
2463 dctdnoiz_filter_deps="avcodec"
2464 dctdnoiz_filter_select="dct"
2465 delogo_filter_deps="gpl"
2466 deshake_filter_deps="avcodec"
2467 deshake_filter_select="dsputil"
2468 drawtext_filter_deps="libfreetype"
2469 ebur128_filter_deps="gpl"
2470 flite_filter_deps="libflite"
2471 frei0r_filter_deps="frei0r dlopen"
2472 frei0r_filter_extralibs='$ldl'
2473 frei0r_src_filter_deps="frei0r dlopen"
2474 frei0r_src_filter_extralibs='$ldl'
2475 geq_filter_deps="gpl"
2476 histeq_filter_deps="gpl"
2477 hqdn3d_filter_deps="gpl"
2478 interlace_filter_deps="gpl"
2479 kerndeint_filter_deps="gpl"
2480 ladspa_filter_deps="ladspa dlopen"
2481 mcdeint_filter_deps="avcodec gpl"
2482 movie_filter_deps="avcodec avformat"
2483 mp_filter_deps="gpl avcodec swscale inline_asm"
2484 mpdecimate_filter_deps="gpl avcodec"
2485 mptestsrc_filter_deps="gpl"
2486 negate_filter_deps="lut_filter"
2487 perspective_filter_deps="gpl"
2488 ocv_filter_deps="libopencv"
2489 owdenoise_filter_deps="gpl"
2490 pan_filter_deps="swresample"
2491 phase_filter_deps="gpl"
2492 pp_filter_deps="gpl postproc"
2493 pullup_filter_deps="gpl"
2494 removelogo_filter_deps="avcodec avformat swscale"
2495 resample_filter_deps="avresample"
2496 sab_filter_deps="gpl swscale"
2497 scale_filter_deps="swscale"
2498 smartblur_filter_deps="gpl swscale"
2499 showspectrum_filter_deps="avcodec"
2500 showspectrum_filter_select="rdft"
2501 spp_filter_deps="gpl avcodec"
2502 spp_filter_select="fft"
2503 stereo3d_filter_deps="gpl"
2504 subtitles_filter_deps="avformat avcodec libass"
2505 super2xsai_filter_deps="gpl"
2506 tinterlace_filter_deps="gpl"
2507 vidstabdetect_filter_deps="libvidstab"
2508 vidstabtransform_filter_deps="libvidstab"
2509 pixfmts_super2xsai_test_deps="super2xsai_filter"
2510 tinterlace_merge_test_deps="tinterlace_filter"
2511 tinterlace_pad_test_deps="tinterlace_filter"
2512 zmq_filter_deps="libzmq"
2513
2514 # examples
2515 avio_reading="avformat avcodec avutil"
2516 avcodec_example_deps="avcodec avutil"
2517 demuxing_decoding_example_deps="avcodec avformat avutil"
2518 filter_audio_example_deps="avfilter avutil"
2519 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2520 filtering_video_example_deps="avfilter avcodec avformat avutil"
2521 metadata_example_deps="avformat avutil"
2522 muxing_example_deps="avcodec avformat avutil swscale"
2523 remuxing_example_deps="avcodec avformat avutil"
2524 resampling_audio_example_deps="avutil swresample"
2525 scaling_video_example_deps="avutil swscale"
2526 transcode_aac_example_deps="avcodec avformat swresample"
2527 transcoding_example_deps="avfilter avcodec avformat avutil"
2528
2529 # libraries
2530 avcodec_deps="avutil"
2531 avdevice_deps="avutil avcodec avformat"
2532 avfilter_deps="avutil"
2533 avformat_deps="avutil avcodec"
2534 avresample_deps="avutil"
2535 postproc_deps="avutil gpl"
2536 swscale_deps="avutil"
2537
2538 # programs
2539 ffmpeg_deps="avcodec avfilter avformat swresample"
2540 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2541                null_filter
2542                setpts_filter trim_filter"
2543 ffplay_deps="avcodec avformat swscale swresample sdl"
2544 ffplay_libs='$sdl_libs'
2545 ffplay_select="rdft crop_filter"
2546 ffprobe_deps="avcodec avformat"
2547 ffserver_deps="avformat fork sarestart"
2548 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2549
2550 # documentation
2551 podpages_deps="perl"
2552 manpages_deps="perl pod2man"
2553 htmlpages_deps="perl texi2html"
2554 txtpages_deps="perl makeinfo"
2555 doc_deps_any="manpages htmlpages podpages txtpages"
2556
2557 # default parameters
2558
2559 logfile="config.log"
2560
2561 # installation paths
2562 prefix_default="/usr/local"
2563 bindir_default='${prefix}/bin'
2564 datadir_default='${prefix}/share/ffmpeg'
2565 docdir_default='${prefix}/share/doc/ffmpeg'
2566 incdir_default='${prefix}/include'
2567 libdir_default='${prefix}/lib'
2568 mandir_default='${prefix}/share/man'
2569 shlibdir_default="$libdir_default"
2570
2571 # toolchain
2572 ar_default="ar"
2573 cc_default="gcc"
2574 cxx_default="g++"
2575 host_cc_default="gcc"
2576 cp_f="cp -f"
2577 install="install"
2578 ln_s="ln -s -f"
2579 nm_default="nm -g"
2580 objformat="elf"
2581 pkg_config_default=pkg-config
2582 ranlib="ranlib"
2583 strip_default="strip"
2584 yasmexe_default="yasm"
2585 windres_default="windres"
2586
2587 nogas=":"
2588
2589 # OS
2590 target_os_default=$(tolower $(uname -s))
2591 host_os=$target_os_default
2592
2593 # machine
2594 if test "$target_os_default" = aix; then
2595     arch_default=$(uname -p)
2596 else
2597     arch_default=$(uname -m)
2598 fi
2599 cpu="generic"
2600
2601 # configurable options
2602 enable $PROGRAM_LIST
2603 enable $DOCUMENT_LIST
2604 enable $EXAMPLE_LIST
2605 enable $(filter_out avresample $LIBRARY_LIST)
2606 enable stripping
2607
2608 enable asm
2609 enable debug
2610 enable doc
2611 enable optimizations
2612 enable runtime_cpudetect
2613 enable safe_bitstream_reader
2614 enable static
2615 enable swscale_alpha
2616
2617 # Enable hwaccels by default.
2618 enable dxva2 vaapi vda vdpau xvmc
2619 enable xlib
2620
2621 # build settings
2622 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2623 LIBPREF="lib"
2624 LIBSUF=".a"
2625 FULLNAME='$(NAME)$(BUILDSUF)'
2626 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2627 SLIBPREF="lib"
2628 SLIBSUF=".so"
2629 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2630 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2631 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2632 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2633 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2634 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2635
2636 asflags_filter=echo
2637 cflags_filter=echo
2638 ldflags_filter=echo
2639
2640 AS_C='-c'
2641 AS_O='-o $@'
2642 CC_C='-c'
2643 CC_E='-E -o $@'
2644 CC_O='-o $@'
2645 CXX_C='-c'
2646 CXX_O='-o $@'
2647 LD_O='-o $@'
2648 LD_LIB='-l%'
2649 LD_PATH='-L'
2650 HOSTCC_C='-c'
2651 HOSTCC_E='-E -o $@'
2652 HOSTCC_O='-o $@'
2653 HOSTLD_O='-o $@'
2654
2655 host_libs='-lm'
2656 host_cflags_filter=echo
2657 host_ldflags_filter=echo
2658
2659 target_path='$(CURDIR)'
2660
2661 # since the object filename is not given with the -MM flag, the compiler
2662 # is only able to print the basename, and we must add the path ourselves
2663 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2664 DEPFLAGS='-MM'
2665
2666 # find source path
2667 if test -f configure; then
2668     source_path=.
2669 else
2670     source_path=$(cd $(dirname "$0"); pwd)
2671     echo "$source_path" | grep -q '[[:blank:]]' &&
2672         die "Out of tree builds are impossible with whitespace in source path."
2673     test -e "$source_path/config.h" &&
2674         die "Out of tree builds are impossible with config.h in source dir."
2675 fi
2676
2677 for v in "$@"; do
2678     r=${v#*=}
2679     l=${v%"$r"}
2680     r=$(sh_quote "$r")
2681     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2682 done
2683
2684 find_things(){
2685     thing=$1
2686     pattern=$2
2687     file=$source_path/$3
2688     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2689 }
2690
2691 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2692 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2693 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2694 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2695 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2696 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2697 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2698 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2699 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2700 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2701 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2702
2703 ALL_COMPONENTS="
2704     $BSF_LIST
2705     $DECODER_LIST
2706     $DEMUXER_LIST
2707     $ENCODER_LIST
2708     $FILTER_LIST
2709     $HWACCEL_LIST
2710     $INDEV_LIST
2711     $MUXER_LIST
2712     $OUTDEV_LIST
2713     $PARSER_LIST
2714     $PROTOCOL_LIST
2715 "
2716
2717 for n in $COMPONENT_LIST; do
2718     v=$(toupper ${n%s})_LIST
2719     eval enable \$$v
2720     eval ${n}_if_any="\$$v"
2721 done
2722
2723 enable $ARCH_EXT_LIST
2724
2725 die_unknown(){
2726     echo "Unknown option \"$1\"."
2727     echo "See $0 --help for available options."
2728     exit 1
2729 }
2730
2731 print_3_columns() {
2732     cat | tr ' ' '\n' | sort | pr -r -3 -t
2733 }
2734
2735 show_list() {
2736     suffix=_$1
2737     shift
2738     echo $* | sed s/$suffix//g | print_3_columns
2739     exit 0
2740 }
2741
2742 rand_list(){
2743     IFS=', '
2744     set -- $*
2745     unset IFS
2746     for thing; do
2747         comp=${thing%:*}
2748         prob=${thing#$comp}
2749         prob=${prob#:}
2750         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2751         echo "prob ${prob:-0.5}"
2752         printf '%s\n' $comp
2753     done
2754 }
2755
2756 do_random(){
2757     action=$1
2758     shift
2759     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2760     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2761 }
2762
2763 for opt do
2764     optval="${opt#*=}"
2765     case "$opt" in
2766         --extra-ldflags=*)
2767             add_ldflags $optval
2768         ;;
2769         --extra-libs=*)
2770             add_extralibs $optval
2771         ;;
2772         --disable-devices)
2773             disable $INDEV_LIST $OUTDEV_LIST
2774         ;;
2775         --enable-debug=*)
2776             debuglevel="$optval"
2777         ;;
2778         --disable-programs)
2779             disable $PROGRAM_LIST
2780         ;;
2781         --disable-everything)
2782             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2783         ;;
2784         --disable-all)
2785             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2786             disable $LIBRARY_LIST $PROGRAM_LIST doc
2787         ;;
2788         --enable-random|--disable-random)
2789             action=${opt%%-random}
2790             do_random ${action#--} $COMPONENT_LIST
2791         ;;
2792         --enable-random=*|--disable-random=*)
2793             action=${opt%%-random=*}
2794             do_random ${action#--} $optval
2795         ;;
2796         --enable-*=*|--disable-*=*)
2797             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2798             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2799             eval list=\$$(toupper $thing)_LIST
2800             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2801             list=$(filter "$name" $list)
2802             [ "$list" = "" ] && warn "Option $opt did not match anything"
2803             $action $list
2804         ;;
2805         --enable-?*|--disable-?*)
2806             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2807             if is_in $option $COMPONENT_LIST; then
2808                 test $action = disable && action=unset
2809                 eval $action \$$(toupper ${option%s})_LIST
2810             elif is_in $option $CMDLINE_SELECT; then
2811                 $action $option
2812             else
2813                 die_unknown $opt
2814             fi
2815         ;;
2816         --list-*)
2817             NAME="${opt#--list-}"
2818             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2819             NAME=${NAME%s}
2820             eval show_list $NAME \$$(toupper $NAME)_LIST
2821         ;;
2822         --help|-h) show_help
2823         ;;
2824         --fatal-warnings) enable fatal_warnings
2825         ;;
2826         *)
2827             optname="${opt%%=*}"
2828             optname="${optname#--}"
2829             optname=$(echo "$optname" | sed 's/-/_/g')
2830             if is_in $optname $CMDLINE_SET; then
2831                 eval $optname='$optval'
2832             elif is_in $optname $CMDLINE_APPEND; then
2833                 append $optname "$optval"
2834             else
2835                 die_unknown $opt
2836             fi
2837         ;;
2838     esac
2839 done
2840
2841 disabled logging && logfile=/dev/null
2842
2843 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2844 set >> $logfile
2845
2846 test -n "$cross_prefix" && enable cross_compile
2847
2848 if enabled cross_compile; then
2849     test -n "$arch" && test -n "$target_os" ||
2850         die "Must specify target arch and OS when cross-compiling"
2851 fi
2852
2853 ar_default="${cross_prefix}${ar_default}"
2854 cc_default="${cross_prefix}${cc_default}"
2855 cxx_default="${cross_prefix}${cxx_default}"
2856 nm_default="${cross_prefix}${nm_default}"
2857 pkg_config_default="${cross_prefix}${pkg_config_default}"
2858 ranlib="${cross_prefix}${ranlib}"
2859 strip_default="${cross_prefix}${strip_default}"
2860 windres_default="${cross_prefix}${windres_default}"
2861
2862 sysinclude_default="${sysroot}/usr/include"
2863
2864 test -n "$valgrind" && toolchain="valgrind-memcheck"
2865
2866 case "$toolchain" in
2867     clang-asan)
2868         cc_default="clang"
2869         add_cflags  -fsanitize=address
2870         add_ldflags -fsanitize=address
2871     ;;
2872     clang-tsan)
2873         cc_default="clang"
2874         add_cflags  -fsanitize=thread -pie
2875         add_ldflags -fsanitize=thread -pie
2876     ;;
2877     clang-usan)
2878         cc_default="clang"
2879         add_cflags  -fsanitize=undefined
2880         add_ldflags -fsanitize=undefined
2881     ;;
2882     gcc-asan)
2883         cc_default="gcc"
2884         add_cflags  -fsanitize=address
2885         add_ldflags -fsanitize=address
2886     ;;
2887     gcc-tsan)
2888         cc_default="gcc"
2889         add_cflags  -fsanitize=thread -pie -fPIC
2890         add_ldflags -fsanitize=thread -pie -fPIC
2891     ;;
2892     gcc-usan)
2893         cc_default="gcc"
2894         add_cflags  -fsanitize=undefined
2895         add_ldflags -fsanitize=undefined
2896     ;;
2897     valgrind-massif)
2898         target_exec_default=${valgrind:-"valgrind"}
2899         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"
2900     ;;
2901     valgrind-memcheck)
2902         target_exec_default=${valgrind:-"valgrind"}
2903         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2904     ;;
2905     msvc)
2906         # Check whether the current MSVC version needs the C99 converter.
2907         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2908         # support enough of C99 to build ffmpeg. Default to the new
2909         # behaviour if the regexp was unable to match anything, since this
2910         # successfully parses the version number of existing supported
2911         # versions that require the converter (MSVC 2010 and 2012).
2912         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2913         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2914             cc_default="cl"
2915         else
2916             cc_default="c99wrap cl"
2917         fi
2918         ld_default="link"
2919         nm_default="dumpbin -symbols"
2920         ar_default="lib"
2921         target_os_default="win32"
2922         # Use a relative path for TMPDIR. This makes sure all the
2923         # ffconf temp files are written with a relative path, avoiding
2924         # issues with msys/win32 path conversion for MSVC parameters
2925         # such as -Fo<file> or -out:<file>.
2926         TMPDIR=.
2927     ;;
2928     icl)
2929         cc_default="icl"
2930         ld_default="xilink"
2931         nm_default="dumpbin -symbols"
2932         ar_default="xilib"
2933         target_os_default="win32"
2934         TMPDIR=.
2935     ;;
2936     gcov)
2937         add_cflags  -fprofile-arcs -ftest-coverage
2938         add_ldflags -fprofile-arcs -ftest-coverage
2939     ;;
2940     hardened)
2941         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2942         add_ldflags -Wl,-z,relro -Wl,-z,now
2943     ;;
2944     ?*)
2945         die "Unknown toolchain $toolchain"
2946     ;;
2947 esac
2948
2949 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2950 enabled cross_compile || host_cc_default=$cc
2951 set_default host_cc
2952
2953 if ! $pkg_config --version >/dev/null 2>&1; then
2954     warn "$pkg_config not found, library detection may fail."
2955     pkg_config=false
2956 fi
2957
2958 exesuf() {
2959     case $1 in
2960         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2961     esac
2962 }
2963
2964 EXESUF=$(exesuf $target_os)
2965 HOSTEXESUF=$(exesuf $host_os)
2966
2967 # set temporary file name
2968 : ${TMPDIR:=$TEMPDIR}
2969 : ${TMPDIR:=$TMP}
2970 : ${TMPDIR:=/tmp}
2971
2972 if [ -n "$tempprefix" ] ; then
2973     mktemp(){
2974         echo $tempprefix.${HOSTNAME}.${UID}
2975     }
2976 elif ! check_cmd mktemp -u XXXXXX; then
2977     # simple replacement for missing mktemp
2978     # NOT SAFE FOR GENERAL USE
2979     mktemp(){
2980         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2981     }
2982 fi
2983
2984 tmpfile(){
2985     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2986         (set -C; exec > $tmp) 2>/dev/null ||
2987         die "Unable to create temporary file in $TMPDIR."
2988     append TMPFILES $tmp
2989     eval $1=$tmp
2990 }
2991
2992 trap 'rm -f -- $TMPFILES' EXIT
2993
2994 tmpfile TMPASM .asm
2995 tmpfile TMPC   .c
2996 tmpfile TMPCPP .cpp
2997 tmpfile TMPE   $EXESUF
2998 tmpfile TMPH   .h
2999 tmpfile TMPM   .m
3000 tmpfile TMPO   .o
3001 tmpfile TMPS   .S
3002 tmpfile TMPSH  .sh
3003 tmpfile TMPV   .ver
3004
3005 unset -f mktemp
3006
3007 chmod +x $TMPE
3008
3009 # make sure we can execute files in $TMPDIR
3010 cat > $TMPSH 2>> $logfile <<EOF
3011 #! /bin/sh
3012 EOF
3013 chmod +x $TMPSH >> $logfile 2>&1
3014 if ! $TMPSH >> $logfile 2>&1; then
3015     cat <<EOF
3016 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3017 variable to another directory and make sure that it is not mounted noexec.
3018 EOF
3019     die "Sanity test failed."
3020 fi
3021
3022 ccc_flags(){
3023     for flag; do
3024         case $flag in
3025             -std=c99)           echo -c99                       ;;
3026             -mcpu=*)            echo -arch ${flag#*=}           ;;
3027             -mieee)             echo -ieee                      ;;
3028             -O*|-fast)          echo $flag                      ;;
3029             -fno-math-errno)    echo -assume nomath_errno       ;;
3030             -g)                 echo -g3                        ;;
3031             -Wall)              echo -msg_enable level2         ;;
3032             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3033             -Wl,*)              echo $flag                      ;;
3034             -f*|-W*)                                            ;;
3035             *)                  echo $flag                      ;;
3036         esac
3037    done
3038 }
3039
3040 cparser_flags(){
3041     for flag; do
3042         case $flag in
3043             -Wno-switch)             echo -Wno-switch-enum ;;
3044             -Wno-format-zero-length) ;;
3045             -Wdisabled-optimization) ;;
3046             -Wno-pointer-sign)       echo -Wno-other ;;
3047             *)                       echo $flag ;;
3048         esac
3049     done
3050 }
3051
3052 msvc_common_flags(){
3053     for flag; do
3054         case $flag in
3055             # In addition to specifying certain flags under the compiler
3056             # specific filters, they must be specified here as well or else the
3057             # generic catch all at the bottom will print the original flag.
3058             -Wall)                ;;
3059             -std=c99)             ;;
3060             # Common flags
3061             -fomit-frame-pointer) ;;
3062             -g)                   echo -Z7 ;;
3063             -fno-math-errno)      ;;
3064             -fno-common)          ;;
3065             -fno-signed-zeros)    ;;
3066             -fPIC)                ;;
3067             -mthumb)              ;;
3068             -march=*)             ;;
3069             -lz)                  echo zlib.lib ;;
3070             -lavifil32)           echo vfw32.lib ;;
3071             -lavicap32)           echo vfw32.lib user32.lib ;;
3072             -l*)                  echo ${flag#-l}.lib ;;
3073             *)                    echo $flag ;;
3074         esac
3075     done
3076 }
3077
3078 msvc_flags(){
3079     msvc_common_flags "$@"
3080     for flag; do
3081         case $flag in
3082             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3083                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3084                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3085                                        -wd4554 \
3086                                        -wd4273 ;;
3087         esac
3088     done
3089 }
3090
3091 icl_flags(){
3092     msvc_common_flags "$@"
3093     for flag; do
3094         case $flag in
3095             # Despite what Intel's documentation says -Wall, which is supported
3096             # on Windows, does enable remarks so disable them here.
3097             -Wall)                echo $flag -Qdiag-disable:remark ;;
3098             -std=c99)             echo -Qstd=c99 ;;
3099         esac
3100     done
3101 }
3102
3103 pgi_flags(){
3104     for flag; do
3105         case $flag in
3106             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3107             -fomit-frame-pointer) echo -Mnoframe ;;
3108             -g)                   echo -gopt ;;
3109             *)                    echo $flag ;;
3110         esac
3111     done
3112 }
3113
3114 suncc_flags(){
3115     for flag; do
3116         case $flag in
3117             -march=*|-mcpu=*)
3118                 case "${flag#*=}" in
3119                     native)                   echo -xtarget=native       ;;
3120                     v9|niagara)               echo -xarch=sparc          ;;
3121                     ultrasparc)               echo -xarch=sparcvis       ;;
3122                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3123                     i586|pentium)             echo -xchip=pentium        ;;
3124                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3125                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3126                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3127                     pentium4*)          echo -xtarget=pentium4           ;;
3128                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3129                     *-sse3)             echo -xarch=sse3                 ;;
3130                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3131                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3132                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3133                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3134                     bdver*)                    echo -xarch=avx           ;;
3135                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3136                     k8|opteron|athlon64|athlon-fx)
3137                                                echo -xarch=sse2a         ;;
3138                     athlon*)                   echo -xarch=pentium_proa  ;;
3139                 esac
3140                 ;;
3141             -std=c99)             echo -xc99              ;;
3142             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3143             -fPIC)                echo -KPIC -xcode=pic32 ;;
3144             -W*,*)                echo $flag              ;;
3145             -f*-*|-W*|-mimpure-text)                      ;;
3146             -shared)              echo -G                 ;;
3147             *)                    echo $flag              ;;
3148         esac
3149     done
3150 }
3151
3152 tms470_flags(){
3153     for flag; do
3154         case $flag in
3155             -march=*|-mcpu=*)
3156                 case "${flag#*=}" in
3157                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3158                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3159                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3160                     armv6*|arm11*)          echo -mv=6   ;;
3161                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3162                                             echo -mv=5e  ;;
3163                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3164                 esac
3165                 ;;
3166             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3167             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3168             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3169             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3170             -msoft-float)   echo --float_support=vfplib       ;;
3171             -O[0-3]|-mf=*)  echo $flag                        ;;
3172             -g)             echo -g -mn                       ;;
3173             -pds=*)         echo $flag                        ;;
3174             -D*|-I*)        echo $flag                        ;;
3175             --gcc|--abi=*)  echo $flag                        ;;
3176             -me)            echo $flag                        ;;
3177         esac
3178     done
3179 }
3180
3181 probe_cc(){
3182     pfx=$1
3183     _cc=$2
3184
3185     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3186     unset _ld_o _ldflags _ld_lib _ld_path
3187     unset _depflags _DEPCMD _DEPFLAGS
3188     _flags_filter=echo
3189
3190     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3191         true # no-op to avoid reading stdin in following checks
3192     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3193         _type=llvm_gcc
3194         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3195         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3196         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3197         _cflags_speed='-O3'
3198         _cflags_size='-Os'
3199     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3200         _type=gcc
3201         gcc_version=$($_cc --version | head -n1)
3202         gcc_basever=$($_cc -dumpversion)
3203         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3204         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3205         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3206         if ! $_cc -dumpversion | grep -q '^2\.'; then
3207             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3208         fi
3209         _cflags_speed='-O3'
3210         _cflags_size='-Os'
3211     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3212         _type=icc
3213         _ident=$($_cc --version | head -n1)
3214         _depflags='-MMD'
3215         _cflags_speed='-O3'
3216         _cflags_size='-Os'
3217         _cflags_noopt='-O1'
3218     elif $_cc -v 2>&1 | grep -q xlc; then
3219         _type=xlc
3220         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3221         _cflags_speed='-O5'
3222         _cflags_size='-O5 -qcompact'
3223     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3224         _type=ccc
3225         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3226         _DEPFLAGS='-M'
3227         _cflags_speed='-fast'
3228         _cflags_size='-O1'
3229         _flags_filter=ccc_flags
3230     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3231         test -d "$sysroot" || die "No valid sysroot specified."
3232         _type=armcc
3233         _ident=$($_cc --vsn | head -n1)
3234         armcc_conf="$PWD/armcc.conf"
3235         $_cc --arm_linux_configure                 \
3236              --arm_linux_config_file="$armcc_conf" \
3237              --configure_sysroot="$sysroot"        \
3238              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3239              die "Error creating armcc configuration file."
3240         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3241         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3242         as_default="${cross_prefix}gcc"
3243         _depflags='-MMD'
3244         _cflags_speed='-O3'
3245         _cflags_size='-Os'
3246     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3247         _type=tms470
3248         _ident=$($_cc -version | head -n1 | tr -s ' ')
3249         _flags='--gcc --abi=eabi -me'
3250         _cc_e='-ppl -fe=$@'
3251         _cc_o='-fe=$@'
3252         _depflags='-ppa -ppd=$(@:.o=.d)'
3253         _cflags_speed='-O3 -mf=5'
3254         _cflags_size='-O3 -mf=2'
3255         _flags_filter=tms470_flags
3256     elif $_cc -v 2>&1 | grep -q clang; then
3257         _type=clang
3258         _ident=$($_cc --version | head -n1)
3259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3260         _cflags_speed='-O3'
3261         _cflags_size='-Os'
3262     elif $_cc -V 2>&1 | grep -q Sun; then
3263         _type=suncc
3264         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3265         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3266         _DEPFLAGS='-xM1 -xc99'
3267         _ldflags='-std=c99'
3268         _cflags_speed='-O5'
3269         _cflags_size='-O5 -xspace'
3270         _flags_filter=suncc_flags
3271     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3272         _type=pathscale
3273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3275         _cflags_speed='-O2'
3276         _cflags_size='-Os'
3277         _flags_filter='filter_out -Wdisabled-optimization'
3278     elif $_cc -v 2>&1 | grep -q Open64; then
3279         _type=open64
3280         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3282         _cflags_speed='-O2'
3283         _cflags_size='-Os'
3284         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3285     elif $_cc -V 2>&1 | grep -q Portland; then
3286         _type=pgi
3287         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3288         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3289         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3290         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3291         _cflags_noopt="-O"
3292         _flags_filter=pgi_flags
3293     elif $_cc 2>&1 | grep -q Microsoft; then
3294         _type=msvc
3295         _ident=$($cc 2>&1 | head -n1)
3296         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3297         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3298         _cflags_speed="-O2"
3299         _cflags_size="-O1"
3300         if $_cc 2>&1 | grep -q Linker; then
3301             _ld_o='-out:$@'
3302         else
3303             _ld_o='-Fe$@'
3304         fi
3305         _cc_o='-Fo$@'
3306         _cc_e='-P -Fi$@'
3307         _flags_filter=msvc_flags
3308         _ld_lib='lib%.a'
3309         _ld_path='-libpath:'
3310         _flags='-nologo'
3311         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3312         if [ $pfx = hostcc ]; then
3313             append _cflags -Dsnprintf=_snprintf
3314         fi
3315         disable stripping
3316     elif $_cc 2>&1 | grep -q Intel; then
3317         _type=icl
3318         _ident=$($cc 2>&1 | head -n1)
3319         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3320         # Not only is O3 broken on 13.x+ but it is slower on all previous
3321         # versions (tested) as well.
3322         _cflags_speed="-O2"
3323         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3324         if $_cc 2>&1 | grep -q Linker; then
3325             _ld_o='-out:$@'
3326         else
3327             _ld_o='-Fe$@'
3328         fi
3329         _cc_o='-Fo$@'
3330         _cc_e='-P'
3331         _flags_filter=icl_flags
3332         _ld_lib='lib%.a'
3333         _ld_path='-libpath:'
3334         # -Qdiag-error to make icl error when seeing certain unknown arguments
3335         _flags='-nologo -Qdiag-error:4044,10157'
3336         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3337         # with MSVC which enables it by default.
3338         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3339         if [ $pfx = hostcc ]; then
3340             append _cflags -Dsnprintf=_snprintf
3341         fi
3342     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3343         _type=cparser
3344         _ident=$($_cc --version | head -n1)
3345         _depflags='-MMD'
3346         _cflags_speed='-O4'
3347         _cflags_size='-O2'
3348         _flags_filter=cparser_flags
3349     fi
3350
3351     eval ${pfx}_type=\$_type
3352     eval ${pfx}_ident=\$_ident
3353 }
3354
3355 set_ccvars(){
3356     eval ${1}_C=\${_cc_c-\${${1}_C}}
3357     eval ${1}_E=\${_cc_e-\${${1}_E}}
3358     eval ${1}_O=\${_cc_o-\${${1}_O}}
3359
3360     if [ -n "$_depflags" ]; then
3361         eval ${1}_DEPFLAGS=\$_depflags
3362     else
3363         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3364         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3365         eval DEP${1}FLAGS=\$_flags
3366     fi
3367 }
3368
3369 probe_cc cc "$cc"
3370 cflags_filter=$_flags_filter
3371 cflags_speed=$_cflags_speed
3372 cflags_size=$_cflags_size
3373 cflags_noopt=$_cflags_noopt
3374 add_cflags $_flags $_cflags
3375 cc_ldflags=$_ldflags
3376 set_ccvars CC
3377
3378 probe_cc hostcc "$host_cc"
3379 host_cflags_filter=$_flags_filter
3380 add_host_cflags  $_flags $_cflags
3381 set_ccvars HOSTCC
3382
3383 test -n "$cc_type" && enable $cc_type ||
3384     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3385
3386 : ${as_default:=$cc}
3387 : ${dep_cc_default:=$cc}
3388 : ${ld_default:=$cc}
3389 : ${host_ld_default:=$host_cc}
3390 set_default ar as dep_cc ld host_ld windres
3391
3392 probe_cc as "$as"
3393 asflags_filter=$_flags_filter
3394 add_asflags $_flags $_cflags
3395 set_ccvars AS
3396
3397 probe_cc ld "$ld"
3398 ldflags_filter=$_flags_filter
3399 add_ldflags $_flags $_ldflags
3400 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3401 LD_O=${_ld_o-$LD_O}
3402 LD_LIB=${_ld_lib-$LD_LIB}
3403 LD_PATH=${_ld_path-$LD_PATH}
3404
3405 probe_cc hostld "$host_ld"
3406 host_ldflags_filter=$_flags_filter
3407 add_host_ldflags $_flags $_ldflags
3408 HOSTLD_O=${_ld_o-$HOSTLD_O}
3409
3410 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3411     probe_cc depcc "$dep_cc"
3412     CCDEP=${_DEPCMD:-$DEPCMD}
3413     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3414     DEPCCFLAGS=$_flags
3415 fi
3416
3417 if $ar 2>&1 | grep -q Microsoft; then
3418     arflags="-nologo"
3419     ar_o='-out:$@'
3420 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3421     arflags="rq"
3422     ar_o='$@'
3423 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3424     arflags='-Xany -r -c'
3425     ar_o='$@'
3426 else
3427     arflags="rc"
3428     ar_o='$@'
3429 fi
3430
3431 add_cflags $extra_cflags
3432 add_cxxflags $extra_cxxflags
3433 add_asflags $extra_cflags
3434
3435 if test -n "$sysroot"; then
3436     case "$cc_type" in
3437         gcc|llvm_gcc|clang)
3438             add_cppflags --sysroot="$sysroot"
3439             add_ldflags --sysroot="$sysroot"
3440 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3441             add_cppflags -isysroot "$sysroot"
3442             add_ldflags -isysroot "$sysroot"
3443         ;;
3444         tms470)
3445             add_cppflags -I"$sysinclude"
3446             add_ldflags  --sysroot="$sysroot"
3447         ;;
3448     esac
3449 fi
3450
3451 if test "$cpu" = host; then
3452     enabled cross_compile &&
3453         die "--cpu=host makes no sense when cross-compiling."
3454
3455     case "$cc_type" in
3456         gcc|llvm_gcc)
3457             check_native(){
3458                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3459                 sed -n "/cc1.*$1=/{
3460                             s/.*$1=\\([^ ]*\\).*/\\1/
3461                             p
3462                             q
3463                         }" $TMPE
3464             }
3465             cpu=$(check_native -march || check_native -mcpu)
3466         ;;
3467     esac
3468
3469     test "${cpu:-host}" = host &&
3470         die "--cpu=host not supported with compiler $cc"
3471 fi
3472
3473 # Deal with common $arch aliases
3474 case "$arch" in
3475     aarch64|arm64)
3476         arch="aarch64"
3477     ;;
3478     arm*|iPad*|iPhone*)
3479         arch="arm"
3480     ;;
3481     mips*|IP*)
3482         arch="mips"
3483     ;;
3484     parisc*|hppa*)
3485         arch="parisc"
3486     ;;
3487     "Power Macintosh"|ppc*|powerpc*)
3488         arch="ppc"
3489     ;;
3490     s390|s390x)
3491         arch="s390"
3492     ;;
3493     sh4|sh)
3494         arch="sh4"
3495     ;;
3496     sun4u|sparc*)
3497         arch="sparc"
3498     ;;
3499     tilegx|tile-gx)
3500         arch="tilegx"
3501     ;;
3502     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3503         arch="x86"
3504     ;;
3505 esac
3506
3507 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3508 enable $arch
3509
3510 # Add processor-specific flags
3511 if enabled aarch64; then
3512
3513     case $cpu in
3514         armv*)
3515             cpuflags="-march=$cpu"
3516         ;;
3517         *)
3518             cpuflags="-mcpu=$cpu"
3519         ;;
3520     esac
3521
3522 elif enabled alpha; then
3523
3524     cpuflags="-mcpu=$cpu"
3525
3526 elif enabled arm; then
3527
3528     check_arm_arch() {
3529         check_cpp_condition stddef.h \
3530             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3531             $cpuflags
3532     }
3533
3534     probe_arm_arch() {
3535         if   check_arm_arch 4;        then echo armv4;
3536         elif check_arm_arch 4T;       then echo armv4t;
3537         elif check_arm_arch 5;        then echo armv5;
3538         elif check_arm_arch 5E;       then echo armv5e;
3539         elif check_arm_arch 5T;       then echo armv5t;
3540         elif check_arm_arch 5TE;      then echo armv5te;
3541         elif check_arm_arch 5TEJ;     then echo armv5te;
3542         elif check_arm_arch 6;        then echo armv6;
3543         elif check_arm_arch 6J;       then echo armv6j;
3544         elif check_arm_arch 6K;       then echo armv6k;
3545         elif check_arm_arch 6Z;       then echo armv6z;
3546         elif check_arm_arch 6ZK;      then echo armv6zk;
3547         elif check_arm_arch 6T2;      then echo armv6t2;
3548         elif check_arm_arch 7;        then echo armv7;
3549         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3550         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3551         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3552         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3553         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3554         fi
3555     }
3556
3557     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3558
3559     case $cpu in
3560         armv*)
3561             cpuflags="-march=$cpu"
3562             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3563         ;;
3564         *)
3565             cpuflags="-mcpu=$cpu"
3566             case $cpu in
3567                 cortex-a*)                               subarch=armv7a  ;;
3568                 cortex-r*)                               subarch=armv7r  ;;
3569                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3570                 arm11*)                                  subarch=armv6   ;;
3571                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3572                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3573                 *)                             subarch=$(probe_arm_arch) ;;
3574             esac
3575         ;;
3576     esac
3577
3578     case "$subarch" in
3579         armv5t*)    enable fast_clz                ;;
3580         armv[6-8]*) enable fast_clz fast_unaligned ;;
3581     esac
3582
3583 elif enabled avr32; then
3584
3585     case $cpu in
3586         ap7[02]0[0-2])
3587             subarch="avr32_ap"
3588             cpuflags="-mpart=$cpu"
3589         ;;
3590         ap)
3591             subarch="avr32_ap"
3592             cpuflags="-march=$cpu"
3593         ;;
3594         uc3[ab]*)
3595             subarch="avr32_uc"
3596             cpuflags="-mcpu=$cpu"
3597         ;;
3598         uc)
3599             subarch="avr32_uc"
3600             cpuflags="-march=$cpu"
3601         ;;
3602     esac
3603
3604 elif enabled bfin; then
3605
3606     cpuflags="-mcpu=$cpu"
3607
3608 elif enabled mips; then
3609
3610     cpuflags="-march=$cpu"
3611
3612     case $cpu in
3613         24kc)
3614             disable mipsfpu
3615             disable mipsdspr1
3616             disable mipsdspr2
3617         ;;
3618         24kf*)
3619             disable mipsdspr1
3620             disable mipsdspr2
3621         ;;
3622         24kec|34kc|1004kc)
3623             disable mipsfpu
3624             disable mipsdspr2
3625         ;;
3626         24kef*|34kf*|1004kf*)
3627             disable mipsdspr2
3628         ;;
3629         74kc)
3630             disable mipsfpu
3631         ;;
3632     esac
3633
3634 elif enabled ppc; then
3635
3636     disable ldbrx
3637
3638     case $(tolower $cpu) in
3639         601|ppc601|powerpc601)
3640             cpuflags="-mcpu=601"
3641             disable altivec
3642         ;;
3643         603*|ppc603*|powerpc603*)
3644             cpuflags="-mcpu=603"
3645             disable altivec
3646         ;;
3647         604*|ppc604*|powerpc604*)
3648             cpuflags="-mcpu=604"
3649             disable altivec
3650         ;;
3651         g3|75*|ppc75*|powerpc75*)
3652             cpuflags="-mcpu=750"
3653             disable altivec
3654         ;;
3655         g4|745*|ppc745*|powerpc745*)
3656             cpuflags="-mcpu=7450"
3657         ;;
3658         74*|ppc74*|powerpc74*)
3659             cpuflags="-mcpu=7400"
3660         ;;
3661         g5|970|ppc970|powerpc970)
3662             cpuflags="-mcpu=970"
3663         ;;
3664         power[3-7]*)
3665             cpuflags="-mcpu=$cpu"
3666         ;;
3667         cell)
3668             cpuflags="-mcpu=cell"
3669             enable ldbrx
3670         ;;
3671         e500mc)
3672             cpuflags="-mcpu=e500mc"
3673             disable altivec
3674         ;;
3675         e500v2)
3676             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3677             disable altivec
3678             disable dcbzl
3679         ;;
3680         e500)
3681             cpuflags="-mcpu=8540 -mhard-float"
3682             disable altivec
3683             disable dcbzl
3684         ;;
3685     esac
3686
3687 elif enabled sparc; then
3688
3689     case $cpu in
3690         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3691             cpuflags="-mcpu=$cpu"
3692         ;;
3693         ultrasparc*|niagara[234])
3694             cpuflags="-mcpu=$cpu"
3695         ;;
3696     esac
3697
3698 elif enabled x86; then
3699
3700     case $cpu in
3701         i[345]86|pentium)
3702             cpuflags="-march=$cpu"
3703             disable mmx
3704         ;;
3705         # targets that do NOT support nopl and conditional mov (cmov)
3706         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3707             cpuflags="-march=$cpu"
3708             disable i686
3709         ;;
3710         # targets that do support nopl and conditional mov (cmov)
3711         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3712             cpuflags="-march=$cpu"
3713             enable i686
3714             enable fast_cmov
3715         ;;
3716         # targets that do support conditional mov but on which it's slow
3717         pentium4|pentium4m|prescott|nocona)
3718             cpuflags="-march=$cpu"
3719             enable i686
3720             disable fast_cmov
3721         ;;
3722     esac
3723
3724 fi
3725
3726 if [ "$cpu" != generic ]; then
3727     add_cflags  $cpuflags
3728     add_asflags $cpuflags
3729 fi
3730
3731 # compiler sanity check
3732 check_exec <<EOF
3733 int main(void){ return 0; }
3734 EOF
3735 if test "$?" != 0; then
3736     echo "$cc is unable to create an executable file."
3737     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3738         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3739         echo "Only do this if you know what cross compiling means."
3740     fi
3741     die "C compiler test failed."
3742 fi
3743
3744 add_cppflags -D_ISOC99_SOURCE
3745 add_cxxflags -D__STDC_CONSTANT_MACROS
3746 check_cflags -std=c99
3747 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3748 #include <stdlib.h>
3749 EOF
3750 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3751 #include <stdlib.h>
3752 EOF
3753
3754 add_host_cppflags -D_ISOC99_SOURCE
3755 check_host_cflags -std=c99
3756 check_host_cflags -Wall
3757 check_host_cflags -O3
3758
3759 check_64bit(){
3760     arch32=$1
3761     arch64=$2
3762     expr=$3
3763     check_code cc "" "int test[2*($expr) - 1]" &&
3764         subarch=$arch64 || subarch=$arch32
3765 }
3766
3767 case "$arch" in
3768     aarch64|alpha|ia64)
3769         spic=$shared
3770     ;;
3771     mips)
3772         check_64bit mips mips64 '_MIPS_SIM > 1'
3773         spic=$shared
3774     ;;
3775     parisc)
3776         check_64bit parisc parisc64 'sizeof(void *) > 4'
3777         spic=$shared
3778     ;;
3779     ppc)
3780         check_64bit ppc ppc64 'sizeof(void *) > 4'
3781         spic=$shared
3782     ;;
3783     s390)
3784         check_64bit s390 s390x 'sizeof(void *) > 4'
3785         spic=$shared
3786     ;;
3787     sparc)
3788         check_64bit sparc sparc64 'sizeof(void *) > 4'
3789         spic=$shared
3790     ;;
3791     x86)
3792         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3793         if test "$subarch" = "x86_64"; then
3794             spic=$shared
3795         fi
3796     ;;
3797     ppc)
3798         check_cc <<EOF && subarch="ppc64"
3799         int test[(int)sizeof(char*) - 7];
3800 EOF
3801     ;;
3802 esac
3803
3804 enable $subarch
3805 enabled spic && enable_weak pic
3806
3807 # OS specific
3808 case $target_os in
3809     aix)
3810         SHFLAGS=-shared
3811         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3812         enabled shared && add_ldflags -Wl,-brtl
3813         ;;
3814     haiku)
3815         prefix_default="/boot/common"
3816         network_extralibs="-lnetwork"
3817         host_libs=
3818         ;;
3819     sunos)
3820         SHFLAGS='-shared -Wl,-h,$$(@F)'
3821         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3822         network_extralibs="-lsocket -lnsl"
3823         # When using suncc to build, the Solaris linker will mark
3824         # an executable with each instruction set encountered by
3825         # the Solaris assembler.  As our libraries contain their own
3826         # guards for processor-specific code, instead suppress
3827         # generation of the HWCAPS ELF section on Solaris x86 only.
3828         enabled_all suncc x86 &&
3829             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3830             add_ldflags -Wl,-M,mapfile
3831         nm_default='nm -P -g'
3832         ;;
3833     netbsd)
3834         disable symver
3835         oss_indev_extralibs="-lossaudio"
3836         oss_outdev_extralibs="-lossaudio"
3837         enabled gcc || check_ldflags -Wl,-zmuldefs
3838         ;;
3839     openbsd|bitrig)
3840         disable symver
3841         SHFLAGS='-shared'
3842         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3843         SLIB_INSTALL_LINKS=
3844         oss_indev_extralibs="-lossaudio"
3845         oss_outdev_extralibs="-lossaudio"
3846         ;;
3847     dragonfly)
3848         disable symver
3849         ;;
3850     freebsd)
3851         ;;
3852     bsd/os)
3853         add_extralibs -lpoll -lgnugetopt
3854         strip="strip -d"
3855         ;;
3856     darwin)
3857         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3858         enabled ppc && add_asflags -force_cpusubtype_ALL
3859         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3860         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3861         strip="${strip} -x"
3862         add_ldflags -Wl,-dynamic,-search_paths_first
3863         SLIBSUF=".dylib"
3864         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3865         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3866         objformat="macho"
3867         enabled x86_64 && objformat="macho64"
3868         enabled_any pic shared ||
3869             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3870         ;;
3871     mingw32*)
3872         if test $target_os = "mingw32ce"; then
3873             disable network
3874         else
3875             target_os=mingw32
3876         fi
3877         LIBTARGET=i386
3878         if enabled x86_64; then
3879             LIBTARGET="i386:x86-64"
3880         elif enabled arm; then
3881             LIBTARGET=arm-wince
3882         fi
3883         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3884         check_ldflags -Wl,--nxcompat
3885         check_ldflags -Wl,--dynamicbase
3886         shlibdir_default="$bindir_default"
3887         SLIBPREF=""
3888         SLIBSUF=".dll"
3889         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3890         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3891         dlltool="${cross_prefix}dlltool"
3892         if check_cmd lib.exe -list; then
3893             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3894             if enabled x86_64; then
3895                 LIBTARGET=x64
3896             fi
3897         elif check_cmd $dlltool --version; then
3898             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3899         fi
3900         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3901         SLIB_INSTALL_LINKS=
3902         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3903         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3904         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3905         objformat="win32"
3906         ranlib=:
3907         enable dos_paths
3908         ;;
3909     win32|win64)
3910         disable symver
3911         if enabled shared; then
3912             # Link to the import library instead of the normal static library
3913             # for shared libs.
3914             LD_LIB='%.lib'
3915             # Cannot build both shared and static libs with MSVC or icl.
3916             disable static
3917         fi
3918         shlibdir_default="$bindir_default"
3919         SLIBPREF=""
3920         SLIBSUF=".dll"
3921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3923         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3924         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3925         SLIB_INSTALL_LINKS=
3926         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3927         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3928         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3929         objformat="win32"
3930         ranlib=:
3931         enable dos_paths
3932         ;;
3933     cygwin*)
3934         target_os=cygwin
3935         shlibdir_default="$bindir_default"
3936         SLIBPREF="cyg"
3937         SLIBSUF=".dll"
3938         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3939         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3940         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3941         SLIB_INSTALL_LINKS=
3942         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3943         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3944         objformat="win32"
3945         enable dos_paths
3946         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3947         ;;
3948     *-dos|freedos|opendos)
3949         network_extralibs="-lsocket"
3950         objformat="coff"
3951         enable dos_paths
3952         add_cppflags -U__STRICT_ANSI__
3953         ;;
3954     linux)
3955         enable dv1394
3956         ;;
3957     irix*)
3958         target_os=irix
3959         ranlib="echo ignoring ranlib"
3960         ;;
3961     os/2*)
3962         strip="lxlite -CS"
3963         ln_s="cp -f"
3964         objformat="aout"
3965         add_cppflags -D_GNU_SOURCE
3966         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3967         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3968         LIBSUF="_s.a"
3969         SLIBPREF=""
3970         SLIBSUF=".dll"
3971         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3972         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3973         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3974             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3975             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3976             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3977             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3978             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3979         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3980             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3981         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3982         enable dos_paths
3983         enable_weak os2threads
3984         ;;
3985     gnu/kfreebsd)
3986         add_cppflags -D_BSD_SOURCE
3987         ;;
3988     gnu)
3989         ;;
3990     qnx)
3991         add_cppflags -D_QNX_SOURCE
3992         network_extralibs="-lsocket"
3993         ;;
3994     symbian)
3995         SLIBSUF=".dll"
3996         enable dos_paths
3997         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3998         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3999         add_ldflags -Wl,--target1-abs,--no-undefined \
4000                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4001                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4002         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4003                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4004                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4005         ;;
4006     osf1)
4007         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4008         ;;
4009     minix)
4010         ;;
4011     plan9)
4012         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4013                      -D_REENTRANT_SOURCE        \
4014                      -D_RESEARCH_SOURCE         \
4015                      -DFD_SETSIZE=96            \
4016                      -DHAVE_SOCK_OPTS
4017         add_compat strtod.o strtod=avpriv_strtod
4018         network_extralibs='-lbsd'
4019         exeobjs=compat/plan9/main.o
4020         disable ffserver
4021         cp_f='cp'
4022         ;;
4023     none)
4024         ;;
4025     *)
4026         die "Unknown OS '$target_os'."
4027         ;;
4028 esac
4029
4030 # determine libc flavour
4031
4032 probe_libc(){
4033     pfx=$1
4034     pfx_no_=${pfx%_}
4035     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4036     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4037         eval ${pfx}libc_type=uclibc
4038         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4039     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4040         eval ${pfx}libc_type=glibc
4041         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4042     # MinGW headers can be installed on Cygwin, so check for newlib first.
4043     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4044         eval ${pfx}libc_type=newlib
4045         add_${pfx}cppflags -U__STRICT_ANSI__
4046     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4047     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4048         eval ${pfx}libc_type=mingw64
4049         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4050             add_compat msvcrt/snprintf.o
4051             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4052         fi
4053         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4054         eval test \$${pfx_no_}cc_type = "gcc" &&
4055             add_${pfx}cppflags -D__printf__=__gnu_printf__
4056     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||