Add Win32 GDI-based screen grabbing
[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 cc_o(){
780     eval printf '%s\\n' $CC_O
781 }
782
783 cc_e(){
784     eval printf '%s\\n' $CC_E
785 }
786
787 check_cc(){
788     log check_cc "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
792 }
793
794 check_cxx(){
795     log check_cxx "$@"
796     cat > $TMPCPP
797     log_file $TMPCPP
798     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
799 }
800
801 check_cpp(){
802     log check_cpp "$@"
803     cat > $TMPC
804     log_file $TMPC
805     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
806 }
807
808 as_o(){
809     eval printf '%s\\n' $AS_O
810 }
811
812 check_as(){
813     log check_as "$@"
814     cat > $TMPS
815     log_file $TMPS
816     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
817 }
818
819 check_inline_asm(){
820     log check_inline_asm "$@"
821     name="$1"
822     code="$2"
823     shift 2
824     disable $name
825     check_cc "$@" <<EOF && enable $name
826 void foo(void){ __asm__ volatile($code); }
827 EOF
828 }
829
830 check_insn(){
831     log check_insn "$@"
832     check_inline_asm ${1}_inline "\"$2\""
833     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
834 }
835
836 check_yasm(){
837     log check_yasm "$@"
838     echo "$1" > $TMPS
839     log_file $TMPS
840     shift 1
841     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
842 }
843
844 ld_o(){
845     eval printf '%s\\n' $LD_O
846 }
847
848 check_ld(){
849     log check_ld "$@"
850     type=$1
851     shift 1
852     flags=$(filter_out '-l*|*.so' $@)
853     libs=$(filter '-l*|*.so' $@)
854     check_$type $($cflags_filter $flags) || return
855     flags=$($ldflags_filter $flags)
856     libs=$($ldflags_filter $libs)
857     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
858 }
859
860 print_include(){
861     hdr=$1
862     test "${hdr%.h}" = "${hdr}" &&
863         echo "#include $hdr"    ||
864         echo "#include <$hdr>"
865 }
866
867 check_code(){
868     log check_code "$@"
869     check=$1
870     headers=$2
871     code=$3
872     shift 3
873     {
874         for hdr in $headers; do
875             print_include $hdr
876         done
877         echo "int main(void) { $code; return 0; }"
878     } | check_$check "$@"
879 }
880
881 check_cppflags(){
882     log check_cppflags "$@"
883     check_cc "$@" <<EOF && append CPPFLAGS "$@"
884 int x;
885 EOF
886 }
887
888 test_cflags(){
889     log test_cflags "$@"
890     set -- $($cflags_filter "$@")
891     check_cc "$@" <<EOF
892 int x;
893 EOF
894 }
895
896 check_cflags(){
897     log check_cflags "$@"
898     test_cflags "$@" && add_cflags "$@"
899 }
900
901 check_cxxflags(){
902     log check_cxxflags "$@"
903     set -- $($cflags_filter "$@")
904     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
905 int x;
906 EOF
907 }
908
909 test_ldflags(){
910     log test_ldflags "$@"
911     check_ld "cc" "$@" <<EOF
912 int main(void){ return 0; }
913 EOF
914 }
915
916 check_ldflags(){
917     log check_ldflags "$@"
918     test_ldflags "$@" && add_ldflags "$@"
919 }
920
921 test_stripflags(){
922     log test_stripflags "$@"
923     # call check_cc to get a fresh TMPO
924     check_cc <<EOF
925 int main(void) { return 0; }
926 EOF
927     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
928 }
929
930 check_stripflags(){
931     log check_stripflags "$@"
932     test_stripflags "$@" && add_stripflags "$@"
933 }
934
935 check_header(){
936     log check_header "$@"
937     header=$1
938     shift
939     disable_safe $header
940     check_cpp "$@" <<EOF && enable_safe $header
941 #include <$header>
942 int x;
943 EOF
944 }
945
946 check_func(){
947     log check_func "$@"
948     func=$1
949     shift
950     disable $func
951     check_ld "cc" "$@" <<EOF && enable $func
952 extern int $func();
953 int main(void){ $func(); }
954 EOF
955 }
956
957 check_mathfunc(){
958     log check_mathfunc "$@"
959     func=$1
960     narg=$2
961     shift 2
962     test $narg = 2 && args="f, g" || args="f"
963     disable $func
964     check_ld "cc" "$@" <<EOF && enable $func
965 #include <math.h>
966 float foo(float f, float g) { return $func($args); }
967 int main(void){ return (int) foo; }
968 EOF
969 }
970
971 check_func_headers(){
972     log check_func_headers "$@"
973     headers=$1
974     funcs=$2
975     shift 2
976     {
977         for hdr in $headers; do
978             print_include $hdr
979         done
980         for func in $funcs; do
981             echo "long check_$func(void) { return (long) $func; }"
982         done
983         echo "int main(void) { return 0; }"
984     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
985 }
986
987 check_class_headers_cpp(){
988     log check_class_headers_cpp "$@"
989     headers=$1
990     classes=$2
991     shift 2
992     {
993         for hdr in $headers; do
994             echo "#include <$hdr>"
995         done
996         echo "int main(void) { "
997         i=1
998         for class in $classes; do
999             echo "$class obj$i;"
1000             i=$(expr $i + 1)
1001         done
1002         echo "return 0; }"
1003     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1004 }
1005
1006 check_cpp_condition(){
1007     log check_cpp_condition "$@"
1008     header=$1
1009     condition=$2
1010     shift 2
1011     check_cpp "$@" <<EOF
1012 #include <$header>
1013 #if !($condition)
1014 #error "unsatisfied condition: $condition"
1015 #endif
1016 EOF
1017 }
1018
1019 check_lib(){
1020     log check_lib "$@"
1021     header="$1"
1022     func="$2"
1023     shift 2
1024     check_header $header && check_func $func "$@" && add_extralibs "$@"
1025 }
1026
1027 check_lib2(){
1028     log check_lib2 "$@"
1029     headers="$1"
1030     funcs="$2"
1031     shift 2
1032     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1033 }
1034
1035 check_lib_cpp(){
1036     log check_lib_cpp "$@"
1037     headers="$1"
1038     classes="$2"
1039     shift 2
1040     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1041 }
1042
1043 check_pkg_config(){
1044     log check_pkg_config "$@"
1045     pkgandversion="$1"
1046     pkg="${1%% *}"
1047     headers="$2"
1048     funcs="$3"
1049     shift 3
1050     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1051     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1052     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1053     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1054         set_safe ${pkg}_cflags $pkg_cflags   &&
1055         set_safe ${pkg}_libs   $pkg_libs
1056 }
1057
1058 check_exec(){
1059     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1060 }
1061
1062 check_exec_crash(){
1063     code=$(cat)
1064
1065     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1066     # are safe but may not be available everywhere.  Thus we use
1067     # raise(SIGTERM) instead.  The check is run in a subshell so we
1068     # can redirect the "Terminated" message from the shell.  SIGBUS
1069     # is not defined by standard C so it is used conditionally.
1070
1071     (check_exec "$@") >> $logfile 2>&1 <<EOF
1072 #include <signal.h>
1073 static void sighandler(int sig){
1074     raise(SIGTERM);
1075 }
1076 int foo(void){
1077     $code
1078 }
1079 int (*func_ptr)(void) = foo;
1080 int main(void){
1081     signal(SIGILL, sighandler);
1082     signal(SIGFPE, sighandler);
1083     signal(SIGSEGV, sighandler);
1084 #ifdef SIGBUS
1085     signal(SIGBUS, sighandler);
1086 #endif
1087     return func_ptr();
1088 }
1089 EOF
1090 }
1091
1092 check_type(){
1093     log check_type "$@"
1094     headers=$1
1095     type=$2
1096     shift 2
1097     disable_safe "$type"
1098     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1099 }
1100
1101 check_struct(){
1102     log check_struct "$@"
1103     headers=$1
1104     struct=$2
1105     member=$3
1106     shift 3
1107     disable_safe "${struct}_${member}"
1108     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1109         enable_safe "${struct}_${member}"
1110 }
1111
1112 check_builtin(){
1113     log check_builtin "$@"
1114     name=$1
1115     headers=$2
1116     builtin=$3
1117     shift 3
1118     disable "$name"
1119     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1120 }
1121
1122 check_compile_assert(){
1123     log check_compile_assert "$@"
1124     name=$1
1125     headers=$2
1126     condition=$3
1127     shift 3
1128     disable "$name"
1129     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1130 }
1131
1132 require(){
1133     name="$1"
1134     header="$2"
1135     func="$3"
1136     shift 3
1137     check_lib $header $func "$@" || die "ERROR: $name not found"
1138 }
1139
1140 require2(){
1141     name="$1"
1142     headers="$2"
1143     func="$3"
1144     shift 3
1145     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1146 }
1147
1148 require_cpp(){
1149     name="$1"
1150     headers="$2"
1151     classes="$3"
1152     shift 3
1153     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1154 }
1155
1156 require_pkg_config(){
1157     pkg="$1"
1158     check_pkg_config "$@" || die "ERROR: $pkg not found"
1159     add_cflags    $(get_safe ${pkg}_cflags)
1160     add_extralibs $(get_safe ${pkg}_libs)
1161 }
1162
1163 require_libfreetype(){
1164     log require_libfreetype "$@"
1165     pkg="freetype2"
1166     check_cmd $pkg_config --exists --print-errors $pkg \
1167       || die "ERROR: $pkg not found"
1168     pkg_cflags=$($pkg_config --cflags $pkg)
1169     pkg_libs=$($pkg_config --libs $pkg)
1170     {
1171         echo "#include <ft2build.h>"
1172         echo "#include FT_FREETYPE_H"
1173         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1174         echo "int main(void) { return 0; }"
1175     } | check_ld "cc" $pkg_cflags $pkg_libs \
1176       && set_safe ${pkg}_cflags $pkg_cflags \
1177       && set_safe ${pkg}_libs   $pkg_libs \
1178       || die "ERROR: $pkg not found"
1179     add_cflags    $(get_safe ${pkg}_cflags)
1180     add_extralibs $(get_safe ${pkg}_libs)
1181 }
1182
1183 hostcc_e(){
1184     eval printf '%s\\n' $HOSTCC_E
1185 }
1186
1187 hostcc_o(){
1188     eval printf '%s\\n' $HOSTCC_O
1189 }
1190
1191 check_host_cc(){
1192     log check_host_cc "$@"
1193     cat > $TMPC
1194     log_file $TMPC
1195     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1196 }
1197
1198 check_host_cpp(){
1199     log check_host_cpp "$@"
1200     cat > $TMPC
1201     log_file $TMPC
1202     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1203 }
1204
1205 check_host_cppflags(){
1206     log check_host_cppflags "$@"
1207     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1208 int x;
1209 EOF
1210 }
1211
1212 check_host_cflags(){
1213     log check_host_cflags "$@"
1214     set -- $($host_cflags_filter "$@")
1215     check_host_cc "$@" <<EOF && append host_cflags "$@"
1216 int x;
1217 EOF
1218 }
1219
1220 check_host_cpp_condition(){
1221     log check_host_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_host_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 apply(){
1234     file=$1
1235     shift
1236     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1237 }
1238
1239 cp_if_changed(){
1240     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1241     mkdir -p "$(dirname $2)"
1242     $cp_f "$1" "$2"
1243 }
1244
1245 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1246 # system-dependent things.
1247
1248 COMPONENT_LIST="
1249     bsfs
1250     decoders
1251     demuxers
1252     encoders
1253     filters
1254     hwaccels
1255     indevs
1256     muxers
1257     outdevs
1258     parsers
1259     protocols
1260 "
1261
1262 EXAMPLE_LIST="
1263     avio_reading_example
1264     avcodec_example
1265     demuxing_decoding_example
1266     filter_audio_example
1267     filtering_audio_example
1268     filtering_video_example
1269     metadata_example
1270     muxing_example
1271     remuxing_example
1272     resampling_audio_example
1273     scaling_video_example
1274     transcode_aac_example
1275     transcoding_example
1276 "
1277
1278 EXTERNAL_LIBRARY_LIST="
1279     avisynth
1280     bzlib
1281     crystalhd
1282     decklink
1283     fontconfig
1284     frei0r
1285     gnutls
1286     iconv
1287     ladspa
1288     libaacplus
1289     libass
1290     libbluray
1291     libcaca
1292     libcdio
1293     libcelt
1294     libdc1394
1295     libfaac
1296     libfdk_aac
1297     libflite
1298     libfreetype
1299     libgme
1300     libgsm
1301     libiec61883
1302     libilbc
1303     libmodplug
1304     libmp3lame
1305     libnut
1306     libopencore_amrnb
1307     libopencore_amrwb
1308     libopencv
1309     libopenjpeg
1310     libopus
1311     libpulse
1312     libquvi
1313     librtmp
1314     libschroedinger
1315     libshine
1316     libsoxr
1317     libspeex
1318     libssh
1319     libstagefright_h264
1320     libtheora
1321     libtwolame
1322     libutvideo
1323     libv4l2
1324     libvidstab
1325     libvo_aacenc
1326     libvo_amrwbenc
1327     libvorbis
1328     libvpx
1329     libwavpack
1330     libwebp
1331     libx264
1332     libx265
1333     libxavs
1334     libxvid
1335     libzmq
1336     libzvbi
1337     openal
1338     opencl
1339     opengl
1340     openssl
1341     x11grab
1342     xlib
1343     zlib
1344 "
1345
1346 DOCUMENT_LIST="
1347     doc
1348     htmlpages
1349     manpages
1350     podpages
1351     txtpages
1352 "
1353
1354 FEATURE_LIST="
1355     ftrapv
1356     gray
1357     hardcoded_tables
1358     runtime_cpudetect
1359     safe_bitstream_reader
1360     shared
1361     small
1362     sram
1363     static
1364     swscale_alpha
1365 "
1366
1367 HWACCEL_LIST="
1368     dxva2
1369     vaapi
1370     vda
1371     vdpau
1372     xvmc
1373 "
1374
1375 LIBRARY_LIST="
1376     avcodec
1377     avdevice
1378     avfilter
1379     avformat
1380     avresample
1381     avutil
1382     postproc
1383     swresample
1384     swscale
1385 "
1386
1387 LICENSE_LIST="
1388     gpl
1389     nonfree
1390     version3
1391 "
1392
1393 PROGRAM_LIST="
1394     ffplay
1395     ffprobe
1396     ffserver
1397     ffmpeg
1398 "
1399
1400 SUBSYSTEM_LIST="
1401     dct
1402     dwt
1403     error_resilience
1404     fast_unaligned
1405     fft
1406     lsp
1407     lzo
1408     mdct
1409     network
1410     rdft
1411 "
1412
1413 CONFIG_LIST="
1414     $COMPONENT_LIST
1415     $DOCUMENT_LIST
1416     $EXAMPLE_LIST
1417     $EXTERNAL_LIBRARY_LIST
1418     $FEATURE_LIST
1419     $HWACCEL_LIST
1420     $LICENSE_LIST
1421     $LIBRARY_LIST
1422     $PROGRAM_LIST
1423     $SUBSYSTEM_LIST
1424     incompatible_libav_abi
1425     incompatible_fork_abi
1426     memalign_hack
1427     memory_poisoning
1428     neon_clobber_test
1429     pic
1430     pod2man
1431     raise_major
1432     thumb
1433     xmm_clobber_test
1434 "
1435
1436 THREADS_LIST="
1437     pthreads
1438     os2threads
1439     w32threads
1440 "
1441
1442 ATOMICS_LIST="
1443     atomics_gcc
1444     atomics_suncc
1445     atomics_win32
1446 "
1447
1448 ARCH_LIST="
1449     aarch64
1450     alpha
1451     arm
1452     avr32
1453     avr32_ap
1454     avr32_uc
1455     bfin
1456     ia64
1457     m68k
1458     mips
1459     mips64
1460     parisc
1461     ppc
1462     ppc64
1463     s390
1464     sh4
1465     sparc
1466     sparc64
1467     tilegx
1468     tilepro
1469     tomi
1470     x86
1471     x86_32
1472     x86_64
1473 "
1474
1475 ARCH_EXT_LIST_ARM="
1476     armv5te
1477     armv6
1478     armv6t2
1479     neon
1480     vfp
1481     vfpv3
1482 "
1483
1484 ARCH_EXT_LIST_MIPS="
1485     mipsfpu
1486     mips32r2
1487     mipsdspr1
1488     mipsdspr2
1489 "
1490
1491 ARCH_EXT_LIST_X86_SIMD="
1492     amd3dnow
1493     amd3dnowext
1494     avx
1495     avx2
1496     fma3
1497     fma4
1498     mmx
1499     mmxext
1500     sse
1501     sse2
1502     sse3
1503     sse4
1504     sse42
1505     ssse3
1506     xop
1507 "
1508
1509 ARCH_EXT_LIST_PPC="
1510     altivec
1511     dcbzl
1512     ldbrx
1513     ppc4xx
1514 "
1515
1516 ARCH_EXT_LIST_X86="
1517     $ARCH_EXT_LIST_X86_SIMD
1518     cpunop
1519     i686
1520 "
1521
1522 ARCH_EXT_LIST="
1523     $ARCH_EXT_LIST_ARM
1524     $ARCH_EXT_LIST_PPC
1525     $ARCH_EXT_LIST_X86
1526     $ARCH_EXT_LIST_MIPS
1527     loongson
1528 "
1529
1530 ARCH_FEATURES="
1531     aligned_stack
1532     fast_64bit
1533     fast_clz
1534     fast_cmov
1535     local_aligned_8
1536     local_aligned_16
1537 "
1538
1539 BUILTIN_LIST="
1540     atomic_cas_ptr
1541     machine_rw_barrier
1542     MemoryBarrier
1543     mm_empty
1544     rdtsc
1545     sarestart
1546     sync_val_compare_and_swap
1547 "
1548 HAVE_LIST_CMDLINE="
1549     inline_asm
1550     symver
1551     yasm
1552 "
1553
1554 HAVE_LIST_PUB="
1555     bigendian
1556     fast_unaligned
1557     incompatible_libav_abi
1558     incompatible_fork_abi
1559 "
1560
1561 HEADERS_LIST="
1562     alsa_asoundlib_h
1563     altivec_h
1564     arpa_inet_h
1565     asm_types_h
1566     cdio_paranoia_h
1567     cdio_paranoia_paranoia_h
1568     CL_cl_h
1569     dev_bktr_ioctl_bt848_h
1570     dev_bktr_ioctl_meteor_h
1571     dev_ic_bt8xx_h
1572     dev_video_bktr_ioctl_bt848_h
1573     dev_video_meteor_ioctl_meteor_h
1574     direct_h
1575     dlfcn_h
1576     dxva_h
1577     ES2_gl_h
1578     gsm_h
1579     io_h
1580     mach_mach_time_h
1581     machine_ioctl_bt848_h
1582     machine_ioctl_meteor_h
1583     malloc_h
1584     openjpeg_1_5_openjpeg_h
1585     OpenGL_gl3_h
1586     poll_h
1587     sndio_h
1588     soundcard_h
1589     sys_mman_h
1590     sys_param_h
1591     sys_resource_h
1592     sys_select_h
1593     sys_soundcard_h
1594     sys_time_h
1595     sys_un_h
1596     sys_videoio_h
1597     termios_h
1598     unistd_h
1599     windows_h
1600     winsock2_h
1601 "
1602
1603 MATH_FUNCS="
1604     atanf
1605     atan2f
1606     cbrt
1607     cbrtf
1608     cosf
1609     exp2
1610     exp2f
1611     expf
1612     isinf
1613     isnan
1614     ldexpf
1615     llrint
1616     llrintf
1617     log2
1618     log2f
1619     log10f
1620     lrint
1621     lrintf
1622     powf
1623     rint
1624     round
1625     roundf
1626     sinf
1627     trunc
1628     truncf
1629 "
1630
1631 SYSTEM_FUNCS="
1632     access
1633     aligned_malloc
1634     clock_gettime
1635     closesocket
1636     CommandLineToArgvW
1637     CryptGenRandom
1638     dlopen
1639     fcntl
1640     flt_lim
1641     fork
1642     getaddrinfo
1643     gethrtime
1644     getopt
1645     GetProcessAffinityMask
1646     GetProcessMemoryInfo
1647     GetProcessTimes
1648     getrusage
1649     getservbyport
1650     GetSystemTimeAsFileTime
1651     gettimeofday
1652     glob
1653     glXGetProcAddress
1654     inet_aton
1655     isatty
1656     jack_port_get_latency_range
1657     kbhit
1658     localtime_r
1659     lzo1x_999_compress
1660     mach_absolute_time
1661     MapViewOfFile
1662     memalign
1663     mkstemp
1664     mmap
1665     mprotect
1666     nanosleep
1667     PeekNamedPipe
1668     posix_memalign
1669     pthread_cancel
1670     sched_getaffinity
1671     SetConsoleTextAttribute
1672     setmode
1673     setrlimit
1674     Sleep
1675     strerror_r
1676     sysconf
1677     sysctl
1678     usleep
1679     VirtualAlloc
1680     wglGetProcAddress
1681 "
1682
1683 TOOLCHAIN_FEATURES="
1684     asm_mod_q
1685     attribute_may_alias
1686     attribute_packed
1687     ebp_available
1688     ebx_available
1689     gnu_as
1690     gnu_windres
1691     ibm_asm
1692     inline_asm_labels
1693     inline_asm_nonlocal_labels
1694     inline_asm_direct_symbol_refs
1695     pragma_deprecated
1696     rsync_contimeout
1697     symver_asm_label
1698     symver_gnu_asm
1699     vfp_args
1700     xform_asm
1701     xmm_clobbers
1702 "
1703
1704 TYPES_LIST="
1705     socklen_t
1706     struct_addrinfo
1707     struct_group_source_req
1708     struct_ip_mreq_source
1709     struct_ipv6_mreq
1710     struct_pollfd
1711     struct_rusage_ru_maxrss
1712     struct_sctp_event_subscribe
1713     struct_sockaddr_in6
1714     struct_sockaddr_sa_len
1715     struct_sockaddr_storage
1716     struct_stat_st_mtim_tv_nsec
1717     struct_v4l2_frmivalenum_discrete
1718 "
1719
1720 HAVE_LIST="
1721     $ARCH_EXT_LIST
1722     $(add_suffix _external $ARCH_EXT_LIST)
1723     $(add_suffix _inline   $ARCH_EXT_LIST)
1724     $ARCH_FEATURES
1725     $ATOMICS_LIST
1726     $BUILTIN_LIST
1727     $HAVE_LIST_CMDLINE
1728     $HAVE_LIST_PUB
1729     $HEADERS_LIST
1730     $MATH_FUNCS
1731     $SYSTEM_FUNCS
1732     $THREADS_LIST
1733     $TOOLCHAIN_FEATURES
1734     $TYPES_LIST
1735     atomics_native
1736     dos_paths
1737     libc_msvcrt
1738     libdc1394_1
1739     libdc1394_2
1740     makeinfo
1741     perl
1742     pod2man
1743     sdl
1744     texi2html
1745     threads
1746     vdpau_x11
1747     xlib
1748 "
1749
1750 # options emitted with CONFIG_ prefix but not available on the command line
1751 CONFIG_EXTRA="
1752     aandcttables
1753     ac3dsp
1754     audio_frame_queue
1755     cabac
1756     dsputil
1757     exif
1758     frame_thread_encoder
1759     gcrypt
1760     golomb
1761     gplv3
1762     h263dsp
1763     h264chroma
1764     h264dsp
1765     h264pred
1766     h264qpel
1767     hpeldsp
1768     huffman
1769     intrax8
1770     lgplv3
1771     llviddsp
1772     lpc
1773     mpegaudio
1774     mpegaudiodsp
1775     mpegvideo
1776     mpegvideoenc
1777     nettle
1778     rangecoder
1779     riffdec
1780     riffenc
1781     rtpdec
1782     rtpenc_chain
1783     sinewin
1784     tpeldsp
1785     videodsp
1786     vp3dsp
1787 "
1788
1789 CMDLINE_SELECT="
1790     $ARCH_EXT_LIST
1791     $CONFIG_LIST
1792     $HAVE_LIST_CMDLINE
1793     $THREADS_LIST
1794     asm
1795     cross_compile
1796     debug
1797     extra_warnings
1798     logging
1799     lto
1800     optimizations
1801     rpath
1802     stripping
1803 "
1804
1805 PATHS_LIST="
1806     bindir
1807     datadir
1808     docdir
1809     incdir
1810     libdir
1811     mandir
1812     prefix
1813     shlibdir
1814 "
1815
1816 CMDLINE_SET="
1817     $PATHS_LIST
1818     ar
1819     arch
1820     as
1821     assert_level
1822     build_suffix
1823     cc
1824     cpu
1825     cross_prefix
1826     cxx
1827     dep_cc
1828     extra_version
1829     host_cc
1830     host_cflags
1831     host_ld
1832     host_ldflags
1833     host_libs
1834     host_os
1835     install
1836     ld
1837     logfile
1838     malloc_prefix
1839     nm
1840     optflags
1841     pkg_config
1842     pkg_config_flags
1843     progs_suffix
1844     random_seed
1845     samples
1846     strip
1847     sysinclude
1848     sysroot
1849     target_exec
1850     target_os
1851     target_path
1852     target_samples
1853     tempprefix
1854     toolchain
1855     valgrind
1856     yasmexe
1857 "
1858
1859 CMDLINE_APPEND="
1860     extra_cflags
1861     extra_cxxflags
1862     host_cppflags
1863 "
1864
1865 # code dependency declarations
1866
1867 # architecture extensions
1868
1869 armv5te_deps="arm"
1870 armv6_deps="arm"
1871 armv6t2_deps="arm"
1872 neon_deps_any="aarch64 arm"
1873 vfp_deps_any="aarch64 arm"
1874 vfpv3_deps="vfp"
1875
1876 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1877
1878 mipsfpu_deps="mips"
1879 mips32r2_deps="mips"
1880 mipsdspr1_deps="mips"
1881 mipsdspr2_deps="mips"
1882
1883 altivec_deps="ppc"
1884 ppc4xx_deps="ppc"
1885
1886 cpunop_deps="i686"
1887 x86_64_select="i686"
1888 x86_64_suggest="fast_cmov"
1889
1890 amd3dnow_deps="mmx"
1891 amd3dnowext_deps="amd3dnow"
1892 i686_deps="x86"
1893 mmx_deps="x86"
1894 mmxext_deps="mmx"
1895 sse_deps="mmxext"
1896 sse2_deps="sse"
1897 sse3_deps="sse2"
1898 ssse3_deps="sse3"
1899 sse4_deps="ssse3"
1900 sse42_deps="sse4"
1901 avx_deps="sse42"
1902 xop_deps="avx"
1903 fma3_deps="avx"
1904 fma4_deps="avx"
1905 avx2_deps="avx"
1906
1907 mmx_external_deps="yasm"
1908 mmx_inline_deps="inline_asm"
1909 mmx_suggest="mmx_external mmx_inline"
1910
1911 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1912     eval dep=\$${ext}_deps
1913     eval ${ext}_external_deps='"${dep}_external"'
1914     eval ${ext}_inline_deps='"${dep}_inline"'
1915     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1916 done
1917
1918 aligned_stack_if_any="aarch64 ppc x86"
1919 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1920 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1921 fast_unaligned_if_any="aarch64 ppc x86"
1922
1923 need_memalign="altivec neon sse"
1924
1925 # system capabilities
1926 log2_deps="!libc_msvcrt"
1927
1928 symver_if_any="symver_asm_label symver_gnu_asm"
1929
1930 # threading support
1931 atomics_gcc_if="sync_val_compare_and_swap"
1932 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1933 atomics_win32_if="MemoryBarrier"
1934 atomics_native_if_any="$ATOMICS_LIST"
1935 w32threads_deps="atomics_native"
1936 threads_if_any="$THREADS_LIST"
1937
1938 # subsystems
1939 dct_select="rdft"
1940 error_resilience_select="dsputil"
1941 frame_thread_encoder_deps="encoders threads"
1942 mdct_select="fft"
1943 rdft_select="fft"
1944 mpegaudio_select="mpegaudiodsp"
1945 mpegaudiodsp_select="dct"
1946 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1947 mpegvideoenc_select="dsputil mpegvideo"
1948
1949 # decoders / encoders
1950 aac_decoder_select="mdct sinewin"
1951 aac_encoder_select="audio_frame_queue mdct sinewin"
1952 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1953 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1954 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1955 ac3_encoder_select="mdct ac3dsp dsputil"
1956 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1957 aic_decoder_select="dsputil golomb"
1958 alac_encoder_select="lpc"
1959 als_decoder_select="dsputil"
1960 amrnb_decoder_select="lsp"
1961 amrwb_decoder_select="lsp"
1962 amv_decoder_select="sp5x_decoder exif"
1963 amv_encoder_select="aandcttables"
1964 ape_decoder_select="dsputil"
1965 asv1_decoder_select="dsputil"
1966 asv1_encoder_select="dsputil"
1967 asv2_decoder_select="dsputil"
1968 asv2_encoder_select="dsputil"
1969 atrac1_decoder_select="mdct sinewin"
1970 atrac3_decoder_select="mdct"
1971 atrac3p_decoder_select="mdct sinewin"
1972 avrn_decoder_select="exif"
1973 bink_decoder_select="dsputil hpeldsp"
1974 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1975 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1976 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1977 cllc_decoder_select="dsputil"
1978 comfortnoise_encoder_select="lpc"
1979 cook_decoder_select="dsputil mdct sinewin"
1980 cscd_decoder_select="lzo"
1981 cscd_decoder_suggest="zlib"
1982 dca_decoder_select="mdct"
1983 dirac_decoder_select="dsputil dwt golomb videodsp"
1984 dnxhd_decoder_select="dsputil"
1985 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1986 dvvideo_decoder_select="dsputil"
1987 dvvideo_encoder_select="dsputil"
1988 dxa_decoder_select="zlib"
1989 eac3_decoder_select="ac3_decoder"
1990 eac3_encoder_select="ac3_encoder"
1991 eamad_decoder_select="aandcttables dsputil mpegvideo"
1992 eatgq_decoder_select="aandcttables"
1993 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1994 exr_decoder_select="zlib"
1995 ffv1_decoder_select="golomb rangecoder"
1996 ffv1_encoder_select="rangecoder"
1997 ffvhuff_decoder_select="huffyuv_decoder"
1998 ffvhuff_encoder_select="huffyuv_encoder"
1999 fic_decoder_select="dsputil golomb"
2000 flac_decoder_select="golomb"
2001 flac_encoder_select="dsputil golomb lpc"
2002 flashsv_decoder_select="zlib"
2003 flashsv_encoder_select="zlib"
2004 flashsv2_encoder_select="zlib"
2005 flashsv2_decoder_select="zlib"
2006 flv_decoder_select="h263_decoder"
2007 flv_encoder_select="h263_encoder"
2008 fourxm_decoder_select="dsputil"
2009 fraps_decoder_select="dsputil huffman"
2010 g2m_decoder_select="dsputil zlib"
2011 g729_decoder_select="dsputil"
2012 h261_decoder_select="error_resilience mpegvideo"
2013 h261_encoder_select="aandcttables mpegvideoenc"
2014 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2015 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2016 h263i_decoder_select="h263_decoder"
2017 h263p_encoder_select="h263_encoder"
2018 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2019 h264_decoder_suggest="error_resilience"
2020 hevc_decoder_select="cabac dsputil golomb videodsp"
2021 huffyuv_decoder_select="dsputil llviddsp"
2022 huffyuv_encoder_select="dsputil huffman llviddsp"
2023 iac_decoder_select="imc_decoder"
2024 imc_decoder_select="dsputil fft mdct sinewin"
2025 indeo3_decoder_select="hpeldsp"
2026 interplay_video_decoder_select="hpeldsp"
2027 jpegls_decoder_select="golomb mjpeg_decoder"
2028 jpegls_encoder_select="golomb"
2029 jv_decoder_select="dsputil"
2030 lagarith_decoder_select="dsputil"
2031 ljpeg_encoder_select="aandcttables mpegvideoenc"
2032 loco_decoder_select="golomb"
2033 mdec_decoder_select="dsputil error_resilience mpegvideo"
2034 metasound_decoder_select="lsp mdct sinewin"
2035 mimic_decoder_select="dsputil hpeldsp"
2036 mjpeg_decoder_select="dsputil hpeldsp exif"
2037 mjpeg_encoder_select="aandcttables mpegvideoenc"
2038 mjpegb_decoder_select="mjpeg_decoder"
2039 mlp_decoder_select="mlp_parser"
2040 motionpixels_decoder_select="dsputil"
2041 mp1_decoder_select="mpegaudio"
2042 mp1float_decoder_select="mpegaudio"
2043 mp2_decoder_select="mpegaudio"
2044 mp2float_decoder_select="mpegaudio"
2045 mp3_decoder_select="mpegaudio"
2046 mp3adu_decoder_select="mpegaudio"
2047 mp3adufloat_decoder_select="mpegaudio"
2048 mp3float_decoder_select="mpegaudio"
2049 mp3on4_decoder_select="mpegaudio"
2050 mp3on4float_decoder_select="mpegaudio"
2051 mpc7_decoder_select="dsputil mpegaudiodsp"
2052 mpc8_decoder_select="mpegaudiodsp"
2053 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2054 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2055 mpeg1video_decoder_select="error_resilience mpegvideo"
2056 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2057 mpeg2video_decoder_select="error_resilience mpegvideo"
2058 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2059 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2060 mpeg4_encoder_select="h263_encoder"
2061 msmpeg4v1_decoder_select="h263_decoder"
2062 msmpeg4v2_decoder_select="h263_decoder"
2063 msmpeg4v2_encoder_select="h263_encoder"
2064 msmpeg4v3_decoder_select="h263_decoder"
2065 msmpeg4v3_encoder_select="h263_encoder"
2066 mss2_decoder_select="error_resilience vc1_decoder"
2067 mxpeg_decoder_select="mjpeg_decoder"
2068 nellymoser_decoder_select="mdct sinewin"
2069 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2070 nuv_decoder_select="dsputil lzo"
2071 png_decoder_select="zlib"
2072 png_encoder_select="dsputil zlib"
2073 prores_decoder_select="dsputil"
2074 prores_encoder_select="dsputil"
2075 qcelp_decoder_select="lsp"
2076 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2077 ra_144_encoder_select="audio_frame_queue lpc"
2078 ralf_decoder_select="golomb"
2079 rtjpeg_decoder_select="dsputil"
2080 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2081 rv10_encoder_select="h263_encoder"
2082 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2083 rv20_encoder_select="h263_encoder"
2084 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2085 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2086 shorten_decoder_select="golomb"
2087 sipr_decoder_select="lsp"
2088 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2089 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2090 sonic_decoder_select="golomb rangecoder"
2091 sonic_encoder_select="golomb rangecoder"
2092 sonic_ls_encoder_select="golomb"
2093 sp5x_decoder_select="mjpeg_decoder"
2094 svq1_decoder_select="hpeldsp"
2095 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2096 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2097 svq3_decoder_suggest="zlib"
2098 tak_decoder_select="dsputil"
2099 theora_decoder_select="vp3_decoder"
2100 thp_decoder_select="mjpeg_decoder"
2101 tiff_decoder_suggest="zlib"
2102 tiff_encoder_suggest="zlib"
2103 truehd_decoder_select="mlp_parser"
2104 truemotion2_decoder_select="dsputil"
2105 truespeech_decoder_select="dsputil"
2106 tscc_decoder_select="zlib"
2107 twinvq_decoder_select="mdct lsp sinewin"
2108 utvideo_decoder_select="dsputil"
2109 utvideo_encoder_select="dsputil huffman"
2110 vble_decoder_select="dsputil"
2111 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2112 vc1image_decoder_select="vc1_decoder"
2113 vorbis_decoder_select="mdct"
2114 vorbis_encoder_select="mdct"
2115 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2116 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2117 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2118 vp6a_decoder_select="vp6_decoder"
2119 vp6f_decoder_select="vp6_decoder"
2120 vp7_decoder_select="h264pred videodsp"
2121 vp8_decoder_select="h264pred videodsp"
2122 vp9_decoder_select="videodsp"
2123 webp_decoder_select="vp8_decoder"
2124 wmapro_decoder_select="mdct sinewin"
2125 wmav1_decoder_select="mdct sinewin"
2126 wmav1_encoder_select="mdct sinewin"
2127 wmav2_decoder_select="mdct sinewin"
2128 wmav2_encoder_select="mdct sinewin"
2129 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2130 wmv1_decoder_select="h263_decoder"
2131 wmv1_encoder_select="h263_encoder"
2132 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2133 wmv2_encoder_select="h263_encoder"
2134 wmv3_decoder_select="vc1_decoder"
2135 wmv3image_decoder_select="wmv3_decoder"
2136 zerocodec_decoder_select="zlib"
2137 zlib_decoder_select="zlib"
2138 zlib_encoder_select="zlib"
2139 zmbv_decoder_select="zlib"
2140 zmbv_encoder_select="zlib"
2141
2142 # hardware accelerators
2143 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2144 dxva2_deps="dxva2api_h"
2145 vaapi_deps="va_va_h"
2146 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2147 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2148 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2149 xvmc_deps="X11_extensions_XvMClib_h"
2150
2151 h263_vaapi_hwaccel_deps="vaapi"
2152 h263_vaapi_hwaccel_select="h263_decoder"
2153 h263_vdpau_hwaccel_deps="vdpau"
2154 h263_vdpau_hwaccel_select="h263_decoder"
2155 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2156 h264_dxva2_hwaccel_deps="dxva2"
2157 h264_dxva2_hwaccel_select="h264_decoder"
2158 h264_vaapi_hwaccel_deps="vaapi"
2159 h264_vaapi_hwaccel_select="h264_decoder"
2160 h264_vda_decoder_deps="vda"
2161 h264_vda_decoder_select="h264_decoder"
2162 h264_vda_hwaccel_deps="vda"
2163 h264_vda_hwaccel_select="h264_decoder"
2164 h264_vdpau_decoder_deps="vdpau"
2165 h264_vdpau_decoder_select="h264_decoder"
2166 h264_vdpau_hwaccel_deps="vdpau"
2167 h264_vdpau_hwaccel_select="h264_decoder"
2168 mpeg_vdpau_decoder_deps="vdpau"
2169 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2170 mpeg_xvmc_hwaccel_deps="xvmc"
2171 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2172 mpeg1_vdpau_decoder_deps="vdpau"
2173 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2174 mpeg1_vdpau_hwaccel_deps="vdpau"
2175 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2176 mpeg1_xvmc_hwaccel_deps="xvmc"
2177 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2178 mpeg2_crystalhd_decoder_select="crystalhd"
2179 mpeg2_dxva2_hwaccel_deps="dxva2"
2180 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2181 mpeg2_vaapi_hwaccel_deps="vaapi"
2182 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2183 mpeg2_vdpau_hwaccel_deps="vdpau"
2184 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2185 mpeg2_xvmc_hwaccel_deps="xvmc"
2186 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2187 mpeg4_crystalhd_decoder_select="crystalhd"
2188 mpeg4_vaapi_hwaccel_deps="vaapi"
2189 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2190 mpeg4_vdpau_decoder_deps="vdpau"
2191 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2192 mpeg4_vdpau_hwaccel_deps="vdpau"
2193 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2194 msmpeg4_crystalhd_decoder_select="crystalhd"
2195 vc1_crystalhd_decoder_select="crystalhd"
2196 vc1_dxva2_hwaccel_deps="dxva2"
2197 vc1_dxva2_hwaccel_select="vc1_decoder"
2198 vc1_vaapi_hwaccel_deps="vaapi"
2199 vc1_vaapi_hwaccel_select="vc1_decoder"
2200 vc1_vdpau_decoder_deps="vdpau"
2201 vc1_vdpau_decoder_select="vc1_decoder"
2202 vc1_vdpau_hwaccel_deps="vdpau"
2203 vc1_vdpau_hwaccel_select="vc1_decoder"
2204 wmv3_crystalhd_decoder_select="crystalhd"
2205 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2206 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2207 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2208 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2209
2210 # parsers
2211 h264_parser_select="h264_decoder"
2212 hevc_parser_select="hevc_decoder"
2213 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2214 mpegvideo_parser_select="error_resilience mpegvideo"
2215 vc1_parser_select="mpegvideo"
2216
2217 # external libraries
2218 libaacplus_encoder_deps="libaacplus"
2219 libcelt_decoder_deps="libcelt"
2220 libfaac_encoder_deps="libfaac"
2221 libfaac_encoder_select="audio_frame_queue"
2222 libfdk_aac_decoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_deps="libfdk_aac"
2224 libfdk_aac_encoder_select="audio_frame_queue"
2225 libgme_demuxer_deps="libgme"
2226 libgsm_decoder_deps="libgsm"
2227 libgsm_encoder_deps="libgsm"
2228 libgsm_ms_decoder_deps="libgsm"
2229 libgsm_ms_encoder_deps="libgsm"
2230 libilbc_decoder_deps="libilbc"
2231 libilbc_encoder_deps="libilbc"
2232 libmodplug_demuxer_deps="libmodplug"
2233 libmp3lame_encoder_deps="libmp3lame"
2234 libmp3lame_encoder_select="audio_frame_queue"
2235 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2236 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2237 libopencore_amrnb_encoder_select="audio_frame_queue"
2238 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2239 libopenjpeg_decoder_deps="libopenjpeg"
2240 libopenjpeg_encoder_deps="libopenjpeg"
2241 libopus_decoder_deps="libopus"
2242 libopus_encoder_deps="libopus"
2243 libopus_encoder_select="audio_frame_queue"
2244 libquvi_demuxer_deps="libquvi"
2245 libschroedinger_decoder_deps="libschroedinger"
2246 libschroedinger_encoder_deps="libschroedinger"
2247 libshine_encoder_deps="libshine"
2248 libshine_encoder_select="audio_frame_queue"
2249 libspeex_decoder_deps="libspeex"
2250 libspeex_encoder_deps="libspeex"
2251 libspeex_encoder_select="audio_frame_queue"
2252 libstagefright_h264_decoder_deps="libstagefright_h264"
2253 libtheora_encoder_deps="libtheora"
2254 libtwolame_encoder_deps="libtwolame"
2255 libvo_aacenc_encoder_deps="libvo_aacenc"
2256 libvo_aacenc_encoder_select="audio_frame_queue"
2257 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2258 libvorbis_decoder_deps="libvorbis"
2259 libvorbis_encoder_deps="libvorbis"
2260 libvorbis_encoder_select="audio_frame_queue"
2261 libvpx_vp8_decoder_deps="libvpx"
2262 libvpx_vp8_encoder_deps="libvpx"
2263 libvpx_vp9_decoder_deps="libvpx"
2264 libvpx_vp9_encoder_deps="libvpx"
2265 libwavpack_encoder_deps="libwavpack"
2266 libwebp_encoder_deps="libwebp"
2267 libx264_encoder_deps="libx264"
2268 libx264rgb_encoder_deps="libx264"
2269 libx265_encoder_deps="libx265"
2270 libxavs_encoder_deps="libxavs"
2271 libxvid_encoder_deps="libxvid"
2272 libutvideo_decoder_deps="libutvideo"
2273 libutvideo_encoder_deps="libutvideo"
2274 libzvbi_teletext_decoder_deps="libzvbi"
2275
2276 # demuxers / muxers
2277 ac3_demuxer_select="ac3_parser"
2278 asf_demuxer_select="riffdec"
2279 asf_muxer_select="riffenc"
2280 asf_stream_muxer_select="asf_muxer"
2281 avi_demuxer_select="riffdec"
2282 avi_muxer_select="riffenc"
2283 avisynth_demuxer_deps="avisynth"
2284 avisynth_demuxer_select="riffdec"
2285 caf_demuxer_select="riffdec"
2286 dirac_demuxer_select="dirac_parser"
2287 dts_demuxer_select="dca_parser"
2288 dtshd_demuxer_select="dca_parser"
2289 dxa_demuxer_select="riffdec"
2290 eac3_demuxer_select="ac3_parser"
2291 f4v_muxer_select="mov_muxer"
2292 flac_demuxer_select="flac_parser"
2293 hds_muxer_select="flv_muxer"
2294 hls_muxer_select="mpegts_muxer"
2295 ipod_muxer_select="mov_muxer"
2296 ismv_muxer_select="mov_muxer"
2297 libnut_demuxer_deps="libnut"
2298 libnut_muxer_deps="libnut"
2299 matroska_audio_muxer_select="matroska_muxer"
2300 matroska_demuxer_select="riffdec"
2301 matroska_demuxer_suggest="bzlib lzo zlib"
2302 matroska_muxer_select="riffenc"
2303 mmf_muxer_select="riffenc"
2304 mov_demuxer_select="riffdec"
2305 mov_demuxer_suggest="zlib"
2306 mov_muxer_select="riffenc rtpenc_chain"
2307 mp3_demuxer_select="mpegaudio_parser"
2308 mp4_muxer_select="mov_muxer"
2309 mpegts_muxer_select="adts_muxer latm_muxer"
2310 mpegtsraw_demuxer_select="mpegts_demuxer"
2311 mxf_d10_muxer_select="mxf_muxer"
2312 nut_muxer_select="riffenc"
2313 nuv_demuxer_select="riffdec"
2314 ogg_demuxer_select="golomb"
2315 psp_muxer_select="mov_muxer"
2316 rtp_demuxer_select="sdp_demuxer"
2317 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2318 rtsp_demuxer_select="http_protocol rtpdec"
2319 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2320 sap_demuxer_select="sdp_demuxer"
2321 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2322 sdp_demuxer_select="rtpdec"
2323 smoothstreaming_muxer_select="ismv_muxer"
2324 spdif_muxer_select="aac_parser"
2325 tak_demuxer_select="tak_parser"
2326 tg2_muxer_select="mov_muxer"
2327 tgp_muxer_select="mov_muxer"
2328 vobsub_demuxer_select="mpegps_demuxer"
2329 w64_demuxer_select="wav_demuxer"
2330 w64_muxer_select="wav_muxer"
2331 wav_demuxer_select="riffdec"
2332 wav_muxer_select="riffenc"
2333 webm_muxer_select="riffenc"
2334 wtv_demuxer_select="riffdec"
2335 wtv_muxer_select="riffenc"
2336 xmv_demuxer_select="riffdec"
2337 xwma_demuxer_select="riffdec"
2338
2339 # indevs / outdevs
2340 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2341 alsa_outdev_deps="alsa_asoundlib_h"
2342 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2343 caca_outdev_deps="libcaca"
2344 decklink_outdev_deps="decklink pthreads"
2345 decklink_outdev_extralibs="-lstdc++"
2346 dshow_indev_deps="IBaseFilter"
2347 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2348 dv1394_indev_deps="dv1394"
2349 dv1394_indev_select="dv_demuxer"
2350 fbdev_indev_deps="linux_fb_h"
2351 fbdev_outdev_deps="linux_fb_h"
2352 gdigrab_indev_deps="CreateDIBSection"
2353 gdigrab_indev_extralibs="-lgdi32"
2354 gdigrab_indev_select="bmp_decoder"
2355 iec61883_indev_deps="libiec61883"
2356 jack_indev_deps="jack_jack_h sem_timedwait"
2357 lavfi_indev_deps="avfilter"
2358 libcdio_indev_deps="libcdio"
2359 libdc1394_indev_deps="libdc1394"
2360 libv4l2_indev_deps="libv4l2"
2361 openal_indev_deps="openal"
2362 opengl_outdev_deps="opengl"
2363 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2364 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2365 pulse_indev_deps="libpulse"
2366 pulse_outdev_deps="libpulse"
2367 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2368 qtkit_indev_select="qtkit"
2369 sdl_outdev_deps="sdl"
2370 sndio_indev_deps="sndio_h"
2371 sndio_outdev_deps="sndio_h"
2372 v4l_indev_deps="linux_videodev_h"
2373 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2374 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2375 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2376 vfwcap_indev_extralibs="-lavicap32"
2377 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2378 xv_outdev_extralibs="-lXv -lX11 -lXext"
2379 x11grab_indev_deps="x11grab"
2380
2381 # protocols
2382 bluray_protocol_deps="libbluray"
2383 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2384 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2385 ffrtmpcrypt_protocol_select="tcp_protocol"
2386 ffrtmphttp_protocol_deps="!librtmp_protocol"
2387 ffrtmphttp_protocol_select="http_protocol"
2388 ftp_protocol_select="tcp_protocol"
2389 gopher_protocol_select="network"
2390 http_protocol_select="tcp_protocol"
2391 httpproxy_protocol_select="tcp_protocol"
2392 https_protocol_select="tls_protocol"
2393 librtmp_protocol_deps="librtmp"
2394 librtmpe_protocol_deps="librtmp"
2395 librtmps_protocol_deps="librtmp"
2396 librtmpt_protocol_deps="librtmp"
2397 librtmpte_protocol_deps="librtmp"
2398 libssh_protocol_deps="libssh"
2399 mmsh_protocol_select="http_protocol"
2400 mmst_protocol_select="network"
2401 rtmp_protocol_deps="!librtmp_protocol"
2402 rtmp_protocol_select="tcp_protocol"
2403 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2404 rtmps_protocol_deps="!librtmp_protocol"
2405 rtmps_protocol_select="tls_protocol"
2406 rtmpt_protocol_select="ffrtmphttp_protocol"
2407 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2408 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2409 rtp_protocol_select="udp_protocol"
2410 sctp_protocol_deps="struct_sctp_event_subscribe"
2411 sctp_protocol_select="network"
2412 srtp_protocol_select="rtp_protocol"
2413 tcp_protocol_select="network"
2414 tls_protocol_deps_any="openssl gnutls"
2415 tls_protocol_select="tcp_protocol"
2416 udp_protocol_select="network"
2417 unix_protocol_deps="sys_un_h"
2418 unix_protocol_select="network"
2419
2420 # filters
2421 aconvert_filter_deps="swresample"
2422 amovie_filter_deps="avcodec avformat"
2423 aresample_filter_deps="swresample"
2424 ass_filter_deps="libass"
2425 asyncts_filter_deps="avresample"
2426 atempo_filter_deps="avcodec"
2427 atempo_filter_select="rdft"
2428 azmq_filter_deps="libzmq"
2429 blackframe_filter_deps="gpl"
2430 boxblur_filter_deps="gpl"
2431 colormatrix_filter_deps="gpl"
2432 cropdetect_filter_deps="gpl"
2433 dctdnoiz_filter_deps="avcodec"
2434 dctdnoiz_filter_select="dct"
2435 delogo_filter_deps="gpl"
2436 deshake_filter_deps="avcodec"
2437 deshake_filter_select="dsputil"
2438 drawtext_filter_deps="libfreetype"
2439 ebur128_filter_deps="gpl"
2440 flite_filter_deps="libflite"
2441 frei0r_filter_deps="frei0r dlopen"
2442 frei0r_filter_extralibs='$ldl'
2443 frei0r_src_filter_deps="frei0r dlopen"
2444 frei0r_src_filter_extralibs='$ldl'
2445 geq_filter_deps="gpl"
2446 histeq_filter_deps="gpl"
2447 hqdn3d_filter_deps="gpl"
2448 interlace_filter_deps="gpl"
2449 kerndeint_filter_deps="gpl"
2450 ladspa_filter_deps="ladspa dlopen"
2451 mcdeint_filter_deps="avcodec gpl"
2452 movie_filter_deps="avcodec avformat"
2453 mp_filter_deps="gpl avcodec swscale inline_asm"
2454 mpdecimate_filter_deps="gpl avcodec"
2455 mptestsrc_filter_deps="gpl"
2456 negate_filter_deps="lut_filter"
2457 perspective_filter_deps="gpl"
2458 ocv_filter_deps="libopencv"
2459 owdenoise_filter_deps="gpl"
2460 pan_filter_deps="swresample"
2461 phase_filter_deps="gpl"
2462 pp_filter_deps="gpl postproc"
2463 pullup_filter_deps="gpl"
2464 removelogo_filter_deps="avcodec avformat swscale"
2465 resample_filter_deps="avresample"
2466 sab_filter_deps="gpl swscale"
2467 scale_filter_deps="swscale"
2468 smartblur_filter_deps="gpl swscale"
2469 showspectrum_filter_deps="avcodec"
2470 showspectrum_filter_select="rdft"
2471 spp_filter_deps="gpl avcodec"
2472 spp_filter_select="fft"
2473 stereo3d_filter_deps="gpl"
2474 subtitles_filter_deps="avformat avcodec libass"
2475 super2xsai_filter_deps="gpl"
2476 tinterlace_filter_deps="gpl"
2477 vidstabdetect_filter_deps="libvidstab"
2478 vidstabtransform_filter_deps="libvidstab"
2479 pixfmts_super2xsai_test_deps="super2xsai_filter"
2480 tinterlace_merge_test_deps="tinterlace_filter"
2481 tinterlace_pad_test_deps="tinterlace_filter"
2482 zmq_filter_deps="libzmq"
2483
2484 # examples
2485 avio_reading="avformat avcodec avutil"
2486 avcodec_example_deps="avcodec avutil"
2487 demuxing_decoding_example_deps="avcodec avformat avutil"
2488 filter_audio_example_deps="avfilter avutil"
2489 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2490 filtering_video_example_deps="avfilter avcodec avformat avutil"
2491 metadata_example_deps="avformat avutil"
2492 muxing_example_deps="avcodec avformat avutil swscale"
2493 remuxing_example_deps="avcodec avformat avutil"
2494 resampling_audio_example_deps="avutil swresample"
2495 scaling_video_example_deps="avutil swscale"
2496 transcode_aac_example_deps="avcodec avformat swresample"
2497 transcoding_example_deps="avfilter avcodec avformat avutil"
2498
2499 # libraries
2500 avcodec_deps="avutil"
2501 avdevice_deps="avutil avcodec avformat"
2502 avfilter_deps="avutil"
2503 avformat_deps="avutil avcodec"
2504 avresample_deps="avutil"
2505 postproc_deps="avutil gpl"
2506 swscale_deps="avutil"
2507
2508 # programs
2509 ffmpeg_deps="avcodec avfilter avformat swresample"
2510 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2511                null_filter
2512                setpts_filter trim_filter"
2513 ffplay_deps="avcodec avformat swscale swresample sdl"
2514 ffplay_libs='$sdl_libs'
2515 ffplay_select="rdft crop_filter"
2516 ffprobe_deps="avcodec avformat"
2517 ffserver_deps="avformat fork sarestart"
2518 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2519
2520 # documentation
2521 podpages_deps="perl"
2522 manpages_deps="perl pod2man"
2523 htmlpages_deps="perl texi2html"
2524 txtpages_deps="perl makeinfo"
2525 doc_deps_any="manpages htmlpages podpages txtpages"
2526
2527 # default parameters
2528
2529 logfile="config.log"
2530
2531 # installation paths
2532 prefix_default="/usr/local"
2533 bindir_default='${prefix}/bin'
2534 datadir_default='${prefix}/share/ffmpeg'
2535 docdir_default='${prefix}/share/doc/ffmpeg'
2536 incdir_default='${prefix}/include'
2537 libdir_default='${prefix}/lib'
2538 mandir_default='${prefix}/share/man'
2539 shlibdir_default="$libdir_default"
2540
2541 # toolchain
2542 ar_default="ar"
2543 cc_default="gcc"
2544 cxx_default="g++"
2545 host_cc_default="gcc"
2546 cp_f="cp -f"
2547 install="install"
2548 ln_s="ln -s -f"
2549 nm_default="nm -g"
2550 objformat="elf"
2551 pkg_config_default=pkg-config
2552 ranlib="ranlib"
2553 strip_default="strip"
2554 yasmexe_default="yasm"
2555 windres_default="windres"
2556
2557 nogas=":"
2558
2559 # OS
2560 target_os_default=$(tolower $(uname -s))
2561 host_os=$target_os_default
2562
2563 # machine
2564 if test "$target_os_default" = aix; then
2565     arch_default=$(uname -p)
2566 else
2567     arch_default=$(uname -m)
2568 fi
2569 cpu="generic"
2570
2571 # configurable options
2572 enable $PROGRAM_LIST
2573 enable $DOCUMENT_LIST
2574 enable $EXAMPLE_LIST
2575 enable $(filter_out avresample $LIBRARY_LIST)
2576 enable stripping
2577
2578 enable asm
2579 enable debug
2580 enable doc
2581 enable optimizations
2582 enable runtime_cpudetect
2583 enable safe_bitstream_reader
2584 enable static
2585 enable swscale_alpha
2586
2587 # Enable hwaccels by default.
2588 enable dxva2 vaapi vda vdpau xvmc
2589 enable xlib
2590
2591 # build settings
2592 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2593 LIBPREF="lib"
2594 LIBSUF=".a"
2595 FULLNAME='$(NAME)$(BUILDSUF)'
2596 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2597 SLIBPREF="lib"
2598 SLIBSUF=".so"
2599 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2600 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2601 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2602 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2603 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2604 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2605
2606 asflags_filter=echo
2607 cflags_filter=echo
2608 ldflags_filter=echo
2609
2610 AS_C='-c'
2611 AS_O='-o $@'
2612 CC_C='-c'
2613 CC_E='-E -o $@'
2614 CC_O='-o $@'
2615 CXX_C='-c'
2616 CXX_O='-o $@'
2617 LD_O='-o $@'
2618 LD_LIB='-l%'
2619 LD_PATH='-L'
2620 HOSTCC_C='-c'
2621 HOSTCC_E='-E -o $@'
2622 HOSTCC_O='-o $@'
2623 HOSTLD_O='-o $@'
2624
2625 host_libs='-lm'
2626 host_cflags_filter=echo
2627 host_ldflags_filter=echo
2628
2629 target_path='$(CURDIR)'
2630
2631 # since the object filename is not given with the -MM flag, the compiler
2632 # is only able to print the basename, and we must add the path ourselves
2633 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2634 DEPFLAGS='-MM'
2635
2636 # find source path
2637 if test -f configure; then
2638     source_path=.
2639 else
2640     source_path=$(cd $(dirname "$0"); pwd)
2641     echo "$source_path" | grep -q '[[:blank:]]' &&
2642         die "Out of tree builds are impossible with whitespace in source path."
2643     test -e "$source_path/config.h" &&
2644         die "Out of tree builds are impossible with config.h in source dir."
2645 fi
2646
2647 for v in "$@"; do
2648     r=${v#*=}
2649     l=${v%"$r"}
2650     r=$(sh_quote "$r")
2651     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2652 done
2653
2654 find_things(){
2655     thing=$1
2656     pattern=$2
2657     file=$source_path/$3
2658     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2659 }
2660
2661 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2662 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2663 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2664 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2665 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2666 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2667 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2668 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2669 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2670 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2671 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2672
2673 ALL_COMPONENTS="
2674     $BSF_LIST
2675     $DECODER_LIST
2676     $DEMUXER_LIST
2677     $ENCODER_LIST
2678     $FILTER_LIST
2679     $HWACCEL_LIST
2680     $INDEV_LIST
2681     $MUXER_LIST
2682     $OUTDEV_LIST
2683     $PARSER_LIST
2684     $PROTOCOL_LIST
2685 "
2686
2687 for n in $COMPONENT_LIST; do
2688     v=$(toupper ${n%s})_LIST
2689     eval enable \$$v
2690     eval ${n}_if_any="\$$v"
2691 done
2692
2693 enable $ARCH_EXT_LIST
2694
2695 die_unknown(){
2696     echo "Unknown option \"$1\"."
2697     echo "See $0 --help for available options."
2698     exit 1
2699 }
2700
2701 print_3_columns() {
2702     cat | tr ' ' '\n' | sort | pr -r -3 -t
2703 }
2704
2705 show_list() {
2706     suffix=_$1
2707     shift
2708     echo $* | sed s/$suffix//g | print_3_columns
2709     exit 0
2710 }
2711
2712 rand_list(){
2713     IFS=', '
2714     set -- $*
2715     unset IFS
2716     for thing; do
2717         comp=${thing%:*}
2718         prob=${thing#$comp}
2719         prob=${prob#:}
2720         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2721         echo "prob ${prob:-0.5}"
2722         printf '%s\n' $comp
2723     done
2724 }
2725
2726 do_random(){
2727     action=$1
2728     shift
2729     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2730     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2731 }
2732
2733 for opt do
2734     optval="${opt#*=}"
2735     case "$opt" in
2736         --extra-ldflags=*)
2737             add_ldflags $optval
2738         ;;
2739         --extra-libs=*)
2740             add_extralibs $optval
2741         ;;
2742         --disable-devices)
2743             disable $INDEV_LIST $OUTDEV_LIST
2744         ;;
2745         --enable-debug=*)
2746             debuglevel="$optval"
2747         ;;
2748         --disable-programs)
2749             disable $PROGRAM_LIST
2750         ;;
2751         --disable-everything)
2752             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2753         ;;
2754         --disable-all)
2755             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2756             disable $LIBRARY_LIST $PROGRAM_LIST doc
2757         ;;
2758         --enable-random|--disable-random)
2759             action=${opt%%-random}
2760             do_random ${action#--} $COMPONENT_LIST
2761         ;;
2762         --enable-random=*|--disable-random=*)
2763             action=${opt%%-random=*}
2764             do_random ${action#--} $optval
2765         ;;
2766         --enable-*=*|--disable-*=*)
2767             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2768             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2769             eval list=\$$(toupper $thing)_LIST
2770             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2771             list=$(filter "$name" $list)
2772             [ "$list" = "" ] && warn "Option $opt did not match anything"
2773             $action $list
2774         ;;
2775         --enable-?*|--disable-?*)
2776             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2777             if is_in $option $COMPONENT_LIST; then
2778                 test $action = disable && action=unset
2779                 eval $action \$$(toupper ${option%s})_LIST
2780             elif is_in $option $CMDLINE_SELECT; then
2781                 $action $option
2782             else
2783                 die_unknown $opt
2784             fi
2785         ;;
2786         --list-*)
2787             NAME="${opt#--list-}"
2788             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2789             NAME=${NAME%s}
2790             eval show_list $NAME \$$(toupper $NAME)_LIST
2791         ;;
2792         --help|-h) show_help
2793         ;;
2794         --fatal-warnings) enable fatal_warnings
2795         ;;
2796         *)
2797             optname="${opt%%=*}"
2798             optname="${optname#--}"
2799             optname=$(echo "$optname" | sed 's/-/_/g')
2800             if is_in $optname $CMDLINE_SET; then
2801                 eval $optname='$optval'
2802             elif is_in $optname $CMDLINE_APPEND; then
2803                 append $optname "$optval"
2804             else
2805                 die_unknown $opt
2806             fi
2807         ;;
2808     esac
2809 done
2810
2811 disabled logging && logfile=/dev/null
2812
2813 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2814 set >> $logfile
2815
2816 test -n "$cross_prefix" && enable cross_compile
2817
2818 if enabled cross_compile; then
2819     test -n "$arch" && test -n "$target_os" ||
2820         die "Must specify target arch and OS when cross-compiling"
2821 fi
2822
2823 ar_default="${cross_prefix}${ar_default}"
2824 cc_default="${cross_prefix}${cc_default}"
2825 cxx_default="${cross_prefix}${cxx_default}"
2826 nm_default="${cross_prefix}${nm_default}"
2827 pkg_config_default="${cross_prefix}${pkg_config_default}"
2828 ranlib="${cross_prefix}${ranlib}"
2829 strip_default="${cross_prefix}${strip_default}"
2830 windres_default="${cross_prefix}${windres_default}"
2831
2832 sysinclude_default="${sysroot}/usr/include"
2833
2834 test -n "$valgrind" && toolchain="valgrind-memcheck"
2835
2836 case "$toolchain" in
2837     clang-asan)
2838         cc_default="clang"
2839         add_cflags  -fsanitize=address
2840         add_ldflags -fsanitize=address
2841     ;;
2842     clang-tsan)
2843         cc_default="clang"
2844         add_cflags  -fsanitize=thread -pie
2845         add_ldflags -fsanitize=thread -pie
2846     ;;
2847     clang-usan)
2848         cc_default="clang"
2849         add_cflags  -fsanitize=undefined
2850         add_ldflags -fsanitize=undefined
2851     ;;
2852     gcc-asan)
2853         cc_default="gcc"
2854         add_cflags  -fsanitize=address
2855         add_ldflags -fsanitize=address
2856     ;;
2857     gcc-tsan)
2858         cc_default="gcc"
2859         add_cflags  -fsanitize=thread -pie -fPIC
2860         add_ldflags -fsanitize=thread -pie -fPIC
2861     ;;
2862     gcc-usan)
2863         cc_default="gcc"
2864         add_cflags  -fsanitize=undefined
2865         add_ldflags -fsanitize=undefined
2866     ;;
2867     valgrind-massif)
2868         target_exec_default=${valgrind:-"valgrind"}
2869         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"
2870     ;;
2871     valgrind-memcheck)
2872         target_exec_default=${valgrind:-"valgrind"}
2873         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2874     ;;
2875     msvc)
2876         # Check whether the current MSVC version needs the C99 converter.
2877         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2878         # support enough of C99 to build ffmpeg. Default to the new
2879         # behaviour if the regexp was unable to match anything, since this
2880         # successfully parses the version number of existing supported
2881         # versions that require the converter (MSVC 2010 and 2012).
2882         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2883         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2884             cc_default="cl"
2885         else
2886             cc_default="c99wrap cl"
2887         fi
2888         ld_default="link"
2889         nm_default="dumpbin -symbols"
2890         ar_default="lib"
2891         target_os_default="win32"
2892         # Use a relative path for TMPDIR. This makes sure all the
2893         # ffconf temp files are written with a relative path, avoiding
2894         # issues with msys/win32 path conversion for MSVC parameters
2895         # such as -Fo<file> or -out:<file>.
2896         TMPDIR=.
2897     ;;
2898     icl)
2899         cc_default="icl"
2900         ld_default="xilink"
2901         nm_default="dumpbin -symbols"
2902         ar_default="xilib"
2903         target_os_default="win32"
2904         TMPDIR=.
2905     ;;
2906     gcov)
2907         add_cflags  -fprofile-arcs -ftest-coverage
2908         add_ldflags -fprofile-arcs -ftest-coverage
2909     ;;
2910     hardened)
2911         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2912         add_ldflags -Wl,-z,relro -Wl,-z,now
2913     ;;
2914     ?*)
2915         die "Unknown toolchain $toolchain"
2916     ;;
2917 esac
2918
2919 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2920 enabled cross_compile || host_cc_default=$cc
2921 set_default host_cc
2922
2923 if ! $pkg_config --version >/dev/null 2>&1; then
2924     warn "$pkg_config not found, library detection may fail."
2925     pkg_config=false
2926 fi
2927
2928 exesuf() {
2929     case $1 in
2930         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2931     esac
2932 }
2933
2934 EXESUF=$(exesuf $target_os)
2935 HOSTEXESUF=$(exesuf $host_os)
2936
2937 # set temporary file name
2938 : ${TMPDIR:=$TEMPDIR}
2939 : ${TMPDIR:=$TMP}
2940 : ${TMPDIR:=/tmp}
2941
2942 if [ -n "$tempprefix" ] ; then
2943     mktemp(){
2944         echo $tempprefix.${HOSTNAME}.${UID}
2945     }
2946 elif ! check_cmd mktemp -u XXXXXX; then
2947     # simple replacement for missing mktemp
2948     # NOT SAFE FOR GENERAL USE
2949     mktemp(){
2950         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2951     }
2952 fi
2953
2954 tmpfile(){
2955     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2956         (set -C; exec > $tmp) 2>/dev/null ||
2957         die "Unable to create temporary file in $TMPDIR."
2958     append TMPFILES $tmp
2959     eval $1=$tmp
2960 }
2961
2962 trap 'rm -f -- $TMPFILES' EXIT
2963
2964 tmpfile TMPASM .asm
2965 tmpfile TMPC   .c
2966 tmpfile TMPCPP .cpp
2967 tmpfile TMPE   $EXESUF
2968 tmpfile TMPH   .h
2969 tmpfile TMPO   .o
2970 tmpfile TMPS   .S
2971 tmpfile TMPSH  .sh
2972 tmpfile TMPV   .ver
2973
2974 unset -f mktemp
2975
2976 chmod +x $TMPE
2977
2978 # make sure we can execute files in $TMPDIR
2979 cat > $TMPSH 2>> $logfile <<EOF
2980 #! /bin/sh
2981 EOF
2982 chmod +x $TMPSH >> $logfile 2>&1
2983 if ! $TMPSH >> $logfile 2>&1; then
2984     cat <<EOF
2985 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2986 variable to another directory and make sure that it is not mounted noexec.
2987 EOF
2988     die "Sanity test failed."
2989 fi
2990
2991 ccc_flags(){
2992     for flag; do
2993         case $flag in
2994             -std=c99)           echo -c99                       ;;
2995             -mcpu=*)            echo -arch ${flag#*=}           ;;
2996             -mieee)             echo -ieee                      ;;
2997             -O*|-fast)          echo $flag                      ;;
2998             -fno-math-errno)    echo -assume nomath_errno       ;;
2999             -g)                 echo -g3                        ;;
3000             -Wall)              echo -msg_enable level2         ;;
3001             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3002             -Wl,*)              echo $flag                      ;;
3003             -f*|-W*)                                            ;;
3004             *)                  echo $flag                      ;;
3005         esac
3006    done
3007 }
3008
3009 cparser_flags(){
3010     for flag; do
3011         case $flag in
3012             -Wno-switch)             echo -Wno-switch-enum ;;
3013             -Wno-format-zero-length) ;;
3014             -Wdisabled-optimization) ;;
3015             -Wno-pointer-sign)       echo -Wno-other ;;
3016             *)                       echo $flag ;;
3017         esac
3018     done
3019 }
3020
3021 msvc_common_flags(){
3022     for flag; do
3023         case $flag in
3024             # In addition to specifying certain flags under the compiler
3025             # specific filters, they must be specified here as well or else the
3026             # generic catch all at the bottom will print the original flag.
3027             -Wall)                ;;
3028             -std=c99)             ;;
3029             # Common flags
3030             -fomit-frame-pointer) ;;
3031             -g)                   echo -Z7 ;;
3032             -fno-math-errno)      ;;
3033             -fno-common)          ;;
3034             -fno-signed-zeros)    ;;
3035             -fPIC)                ;;
3036             -mthumb)              ;;
3037             -march=*)             ;;
3038             -lz)                  echo zlib.lib ;;
3039             -lavifil32)           echo vfw32.lib ;;
3040             -lavicap32)           echo vfw32.lib user32.lib ;;
3041             -l*)                  echo ${flag#-l}.lib ;;
3042             *)                    echo $flag ;;
3043         esac
3044     done
3045 }
3046
3047 msvc_flags(){
3048     msvc_common_flags "$@"
3049     for flag; do
3050         case $flag in
3051             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3052                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3053                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3054                                        -wd4554 \
3055                                        -wd4273 ;;
3056         esac
3057     done
3058 }
3059
3060 icl_flags(){
3061     msvc_common_flags "$@"
3062     for flag; do
3063         case $flag in
3064             # Despite what Intel's documentation says -Wall, which is supported
3065             # on Windows, does enable remarks so disable them here.
3066             -Wall)                echo $flag -Qdiag-disable:remark ;;
3067             -std=c99)             echo -Qstd=c99 ;;
3068         esac
3069     done
3070 }
3071
3072 pgi_flags(){
3073     for flag; do
3074         case $flag in
3075             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3076             -fomit-frame-pointer) echo -Mnoframe ;;
3077             -g)                   echo -gopt ;;
3078             *)                    echo $flag ;;
3079         esac
3080     done
3081 }
3082
3083 suncc_flags(){
3084     for flag; do
3085         case $flag in
3086             -march=*|-mcpu=*)
3087                 case "${flag#*=}" in
3088                     native)                   echo -xtarget=native       ;;
3089                     v9|niagara)               echo -xarch=sparc          ;;
3090                     ultrasparc)               echo -xarch=sparcvis       ;;
3091                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3092                     i586|pentium)             echo -xchip=pentium        ;;
3093                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3094                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3095                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3096                     pentium4*)          echo -xtarget=pentium4           ;;
3097                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3098                     *-sse3)             echo -xarch=sse3                 ;;
3099                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3100                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3101                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3102                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3103                     bdver*)                    echo -xarch=avx           ;;
3104                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3105                     k8|opteron|athlon64|athlon-fx)
3106                                                echo -xarch=sse2a         ;;
3107                     athlon*)                   echo -xarch=pentium_proa  ;;
3108                 esac
3109                 ;;
3110             -std=c99)             echo -xc99              ;;
3111             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3112             -fPIC)                echo -KPIC -xcode=pic32 ;;
3113             -W*,*)                echo $flag              ;;
3114             -f*-*|-W*|-mimpure-text)                      ;;
3115             -shared)              echo -G                 ;;
3116             *)                    echo $flag              ;;
3117         esac
3118     done
3119 }
3120
3121 tms470_flags(){
3122     for flag; do
3123         case $flag in
3124             -march=*|-mcpu=*)
3125                 case "${flag#*=}" in
3126                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3127                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3128                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3129                     armv6*|arm11*)          echo -mv=6   ;;
3130                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3131                                             echo -mv=5e  ;;
3132                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3133                 esac
3134                 ;;
3135             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3136             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3137             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3138             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3139             -msoft-float)   echo --float_support=vfplib       ;;
3140             -O[0-3]|-mf=*)  echo $flag                        ;;
3141             -g)             echo -g -mn                       ;;
3142             -pds=*)         echo $flag                        ;;
3143             -D*|-I*)        echo $flag                        ;;
3144             --gcc|--abi=*)  echo $flag                        ;;
3145             -me)            echo $flag                        ;;
3146         esac
3147     done
3148 }
3149
3150 probe_cc(){
3151     pfx=$1
3152     _cc=$2
3153
3154     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3155     unset _ld_o _ldflags _ld_lib _ld_path
3156     unset _depflags _DEPCMD _DEPFLAGS
3157     _flags_filter=echo
3158
3159     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3160         true # no-op to avoid reading stdin in following checks
3161     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3162         _type=llvm_gcc
3163         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3164         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3165         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3166         _cflags_speed='-O3'
3167         _cflags_size='-Os'
3168     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3169         _type=gcc
3170         gcc_version=$($_cc --version | head -n1)
3171         gcc_basever=$($_cc -dumpversion)
3172         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3173         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3174         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3175         if ! $_cc -dumpversion | grep -q '^2\.'; then
3176             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3177         fi
3178         _cflags_speed='-O3'
3179         _cflags_size='-Os'
3180     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3181         _type=icc
3182         _ident=$($_cc --version | head -n1)
3183         _depflags='-MMD'
3184         _cflags_speed='-O3'
3185         _cflags_size='-Os'
3186         _cflags_noopt='-O1'
3187     elif $_cc -v 2>&1 | grep -q xlc; then
3188         _type=xlc
3189         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3190         _cflags_speed='-O5'
3191         _cflags_size='-O5 -qcompact'
3192     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3193         _type=ccc
3194         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3195         _DEPFLAGS='-M'
3196         _cflags_speed='-fast'
3197         _cflags_size='-O1'
3198         _flags_filter=ccc_flags
3199     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3200         test -d "$sysroot" || die "No valid sysroot specified."
3201         _type=armcc
3202         _ident=$($_cc --vsn | head -n1)
3203         armcc_conf="$PWD/armcc.conf"
3204         $_cc --arm_linux_configure                 \
3205              --arm_linux_config_file="$armcc_conf" \
3206              --configure_sysroot="$sysroot"        \
3207              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3208              die "Error creating armcc configuration file."
3209         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3210         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3211         as_default="${cross_prefix}gcc"
3212         _depflags='-MMD'
3213         _cflags_speed='-O3'
3214         _cflags_size='-Os'
3215     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3216         _type=tms470
3217         _ident=$($_cc -version | head -n1 | tr -s ' ')
3218         _flags='--gcc --abi=eabi -me'
3219         _cc_e='-ppl -fe=$@'
3220         _cc_o='-fe=$@'
3221         _depflags='-ppa -ppd=$(@:.o=.d)'
3222         _cflags_speed='-O3 -mf=5'
3223         _cflags_size='-O3 -mf=2'
3224         _flags_filter=tms470_flags
3225     elif $_cc -v 2>&1 | grep -q clang; then
3226         _type=clang
3227         _ident=$($_cc --version | head -n1)
3228         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3229         _cflags_speed='-O3'
3230         _cflags_size='-Os'
3231     elif $_cc -V 2>&1 | grep -q Sun; then
3232         _type=suncc
3233         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3234         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3235         _DEPFLAGS='-xM1 -xc99'
3236         _ldflags='-std=c99'
3237         _cflags_speed='-O5'
3238         _cflags_size='-O5 -xspace'
3239         _flags_filter=suncc_flags
3240     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3241         _type=pathscale
3242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244         _cflags_speed='-O2'
3245         _cflags_size='-Os'
3246         _flags_filter='filter_out -Wdisabled-optimization'
3247     elif $_cc -v 2>&1 | grep -q Open64; then
3248         _type=open64
3249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3251         _cflags_speed='-O2'
3252         _cflags_size='-Os'
3253         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3254     elif $_cc -V 2>&1 | grep -q Portland; then
3255         _type=pgi
3256         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3257         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3258         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3259         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3260         _cflags_noopt="-O"
3261         _flags_filter=pgi_flags
3262     elif $_cc 2>&1 | grep -q Microsoft; then
3263         _type=msvc
3264         _ident=$($cc 2>&1 | head -n1)
3265         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3266         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3267         _cflags_speed="-O2"
3268         _cflags_size="-O1"
3269         if $_cc 2>&1 | grep -q Linker; then
3270             _ld_o='-out:$@'
3271         else
3272             _ld_o='-Fe$@'
3273         fi
3274         _cc_o='-Fo$@'
3275         _cc_e='-P -Fi$@'
3276         _flags_filter=msvc_flags
3277         _ld_lib='lib%.a'
3278         _ld_path='-libpath:'
3279         _flags='-nologo'
3280         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3281         if [ $pfx = hostcc ]; then
3282             append _cflags -Dsnprintf=_snprintf
3283         fi
3284         disable stripping
3285     elif $_cc 2>&1 | grep -q Intel; then
3286         _type=icl
3287         _ident=$($cc 2>&1 | head -n1)
3288         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3289         # Not only is O3 broken on 13.x+ but it is slower on all previous
3290         # versions (tested) as well.
3291         _cflags_speed="-O2"
3292         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3293         if $_cc 2>&1 | grep -q Linker; then
3294             _ld_o='-out:$@'
3295         else
3296             _ld_o='-Fe$@'
3297         fi
3298         _cc_o='-Fo$@'
3299         _cc_e='-P'
3300         _flags_filter=icl_flags
3301         _ld_lib='lib%.a'
3302         _ld_path='-libpath:'
3303         # -Qdiag-error to make icl error when seeing certain unknown arguments
3304         _flags='-nologo -Qdiag-error:4044,10157'
3305         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3306         # with MSVC which enables it by default.
3307         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3308         if [ $pfx = hostcc ]; then
3309             append _cflags -Dsnprintf=_snprintf
3310         fi
3311     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3312         _type=cparser
3313         _ident=$($_cc --version | head -n1)
3314         _depflags='-MMD'
3315         _cflags_speed='-O4'
3316         _cflags_size='-O2'
3317         _flags_filter=cparser_flags
3318     fi
3319
3320     eval ${pfx}_type=\$_type
3321     eval ${pfx}_ident=\$_ident
3322 }
3323
3324 set_ccvars(){
3325     eval ${1}_C=\${_cc_c-\${${1}_C}}
3326     eval ${1}_E=\${_cc_e-\${${1}_E}}
3327     eval ${1}_O=\${_cc_o-\${${1}_O}}
3328
3329     if [ -n "$_depflags" ]; then
3330         eval ${1}_DEPFLAGS=\$_depflags
3331     else
3332         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3333         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3334         eval DEP${1}FLAGS=\$_flags
3335     fi
3336 }
3337
3338 probe_cc cc "$cc"
3339 cflags_filter=$_flags_filter
3340 cflags_speed=$_cflags_speed
3341 cflags_size=$_cflags_size
3342 cflags_noopt=$_cflags_noopt
3343 add_cflags $_flags $_cflags
3344 cc_ldflags=$_ldflags
3345 set_ccvars CC
3346
3347 probe_cc hostcc "$host_cc"
3348 host_cflags_filter=$_flags_filter
3349 add_host_cflags  $_flags $_cflags
3350 set_ccvars HOSTCC
3351
3352 test -n "$cc_type" && enable $cc_type ||
3353     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3354
3355 : ${as_default:=$cc}
3356 : ${dep_cc_default:=$cc}
3357 : ${ld_default:=$cc}
3358 : ${host_ld_default:=$host_cc}
3359 set_default ar as dep_cc ld host_ld windres
3360
3361 probe_cc as "$as"
3362 asflags_filter=$_flags_filter
3363 add_asflags $_flags $_cflags
3364 set_ccvars AS
3365
3366 probe_cc ld "$ld"
3367 ldflags_filter=$_flags_filter
3368 add_ldflags $_flags $_ldflags
3369 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3370 LD_O=${_ld_o-$LD_O}
3371 LD_LIB=${_ld_lib-$LD_LIB}
3372 LD_PATH=${_ld_path-$LD_PATH}
3373
3374 probe_cc hostld "$host_ld"
3375 host_ldflags_filter=$_flags_filter
3376 add_host_ldflags $_flags $_ldflags
3377 HOSTLD_O=${_ld_o-$HOSTLD_O}
3378
3379 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3380     probe_cc depcc "$dep_cc"
3381     CCDEP=${_DEPCMD:-$DEPCMD}
3382     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3383     DEPCCFLAGS=$_flags
3384 fi
3385
3386 if $ar 2>&1 | grep -q Microsoft; then
3387     arflags="-nologo"
3388     ar_o='-out:$@'
3389 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3390     arflags="rq"
3391     ar_o='$@'
3392 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3393     arflags='-Xany -r -c'
3394     ar_o='$@'
3395 else
3396     arflags="rc"
3397     ar_o='$@'
3398 fi
3399
3400 add_cflags $extra_cflags
3401 add_cxxflags $extra_cxxflags
3402 add_asflags $extra_cflags
3403
3404 if test -n "$sysroot"; then
3405     case "$cc_type" in
3406         gcc|llvm_gcc|clang)
3407             add_cppflags --sysroot="$sysroot"
3408             add_ldflags --sysroot="$sysroot"
3409 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3410             add_cppflags -isysroot "$sysroot"
3411             add_ldflags -isysroot "$sysroot"
3412         ;;
3413         tms470)
3414             add_cppflags -I"$sysinclude"
3415             add_ldflags  --sysroot="$sysroot"
3416         ;;
3417     esac
3418 fi
3419
3420 if test "$cpu" = host; then
3421     enabled cross_compile &&
3422         die "--cpu=host makes no sense when cross-compiling."
3423
3424     case "$cc_type" in
3425         gcc|llvm_gcc)
3426             check_native(){
3427                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3428                 sed -n "/cc1.*$1=/{
3429                             s/.*$1=\\([^ ]*\\).*/\\1/
3430                             p
3431                             q
3432                         }" $TMPE
3433             }
3434             cpu=$(check_native -march || check_native -mcpu)
3435         ;;
3436     esac
3437
3438     test "${cpu:-host}" = host &&
3439         die "--cpu=host not supported with compiler $cc"
3440 fi
3441
3442 # Deal with common $arch aliases
3443 case "$arch" in
3444     aarch64|arm64)
3445         arch="aarch64"
3446     ;;
3447     arm*|iPad*|iPhone*)
3448         arch="arm"
3449     ;;
3450     mips*|IP*)
3451         arch="mips"
3452     ;;
3453     parisc*|hppa*)
3454         arch="parisc"
3455     ;;
3456     "Power Macintosh"|ppc*|powerpc*)
3457         arch="ppc"
3458     ;;
3459     s390|s390x)
3460         arch="s390"
3461     ;;
3462     sh4|sh)
3463         arch="sh4"
3464     ;;
3465     sun4u|sparc*)
3466         arch="sparc"
3467     ;;
3468     tilegx|tile-gx)
3469         arch="tilegx"
3470     ;;
3471     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3472         arch="x86"
3473     ;;
3474 esac
3475
3476 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3477 enable $arch
3478
3479 # Add processor-specific flags
3480 if enabled aarch64; then
3481
3482     case $cpu in
3483         armv*)
3484             cpuflags="-march=$cpu"
3485         ;;
3486         *)
3487             cpuflags="-mcpu=$cpu"
3488         ;;
3489     esac
3490
3491 elif enabled alpha; then
3492
3493     cpuflags="-mcpu=$cpu"
3494
3495 elif enabled arm; then
3496
3497     check_arm_arch() {
3498         check_cpp_condition stddef.h \
3499             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3500             $cpuflags
3501     }
3502
3503     probe_arm_arch() {
3504         if   check_arm_arch 4;        then echo armv4;
3505         elif check_arm_arch 4T;       then echo armv4t;
3506         elif check_arm_arch 5;        then echo armv5;
3507         elif check_arm_arch 5E;       then echo armv5e;
3508         elif check_arm_arch 5T;       then echo armv5t;
3509         elif check_arm_arch 5TE;      then echo armv5te;
3510         elif check_arm_arch 5TEJ;     then echo armv5te;
3511         elif check_arm_arch 6;        then echo armv6;
3512         elif check_arm_arch 6J;       then echo armv6j;
3513         elif check_arm_arch 6K;       then echo armv6k;
3514         elif check_arm_arch 6Z;       then echo armv6z;
3515         elif check_arm_arch 6ZK;      then echo armv6zk;
3516         elif check_arm_arch 6T2;      then echo armv6t2;
3517         elif check_arm_arch 7;        then echo armv7;
3518         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3519         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3520         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3521         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3522         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3523         fi
3524     }
3525
3526     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3527
3528     case $cpu in
3529         armv*)
3530             cpuflags="-march=$cpu"
3531             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3532         ;;
3533         *)
3534             cpuflags="-mcpu=$cpu"
3535             case $cpu in
3536                 cortex-a*)                               subarch=armv7a  ;;
3537                 cortex-r*)                               subarch=armv7r  ;;
3538                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3539                 arm11*)                                  subarch=armv6   ;;
3540                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3541                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3542                 *)                             subarch=$(probe_arm_arch) ;;
3543             esac
3544         ;;
3545     esac
3546
3547     case "$subarch" in
3548         armv5t*)    enable fast_clz                ;;
3549         armv[6-8]*) enable fast_clz fast_unaligned ;;
3550     esac
3551
3552 elif enabled avr32; then
3553
3554     case $cpu in
3555         ap7[02]0[0-2])
3556             subarch="avr32_ap"
3557             cpuflags="-mpart=$cpu"
3558         ;;
3559         ap)
3560             subarch="avr32_ap"
3561             cpuflags="-march=$cpu"
3562         ;;
3563         uc3[ab]*)
3564             subarch="avr32_uc"
3565             cpuflags="-mcpu=$cpu"
3566         ;;
3567         uc)
3568             subarch="avr32_uc"
3569             cpuflags="-march=$cpu"
3570         ;;
3571     esac
3572
3573 elif enabled bfin; then
3574
3575     cpuflags="-mcpu=$cpu"
3576
3577 elif enabled mips; then
3578
3579     cpuflags="-march=$cpu"
3580
3581     case $cpu in
3582         24kc)
3583             disable mipsfpu
3584             disable mipsdspr1
3585             disable mipsdspr2
3586         ;;
3587         24kf*)
3588             disable mipsdspr1
3589             disable mipsdspr2
3590         ;;
3591         24kec|34kc|1004kc)
3592             disable mipsfpu
3593             disable mipsdspr2
3594         ;;
3595         24kef*|34kf*|1004kf*)
3596             disable mipsdspr2
3597         ;;
3598         74kc)
3599             disable mipsfpu
3600         ;;
3601     esac
3602
3603 elif enabled ppc; then
3604
3605     disable ldbrx
3606
3607     case $(tolower $cpu) in
3608         601|ppc601|powerpc601)
3609             cpuflags="-mcpu=601"
3610             disable altivec
3611         ;;
3612         603*|ppc603*|powerpc603*)
3613             cpuflags="-mcpu=603"
3614             disable altivec
3615         ;;
3616         604*|ppc604*|powerpc604*)
3617             cpuflags="-mcpu=604"
3618             disable altivec
3619         ;;
3620         g3|75*|ppc75*|powerpc75*)
3621             cpuflags="-mcpu=750"
3622             disable altivec
3623         ;;
3624         g4|745*|ppc745*|powerpc745*)
3625             cpuflags="-mcpu=7450"
3626         ;;
3627         74*|ppc74*|powerpc74*)
3628             cpuflags="-mcpu=7400"
3629         ;;
3630         g5|970|ppc970|powerpc970)
3631             cpuflags="-mcpu=970"
3632         ;;
3633         power[3-7]*)
3634             cpuflags="-mcpu=$cpu"
3635         ;;
3636         cell)
3637             cpuflags="-mcpu=cell"
3638             enable ldbrx
3639         ;;
3640         e500mc)
3641             cpuflags="-mcpu=e500mc"
3642             disable altivec
3643         ;;
3644         e500v2)
3645             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3646             disable altivec
3647             disable dcbzl
3648         ;;
3649         e500)
3650             cpuflags="-mcpu=8540 -mhard-float"
3651             disable altivec
3652             disable dcbzl
3653         ;;
3654     esac
3655
3656 elif enabled sparc; then
3657
3658     case $cpu in
3659         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3660             cpuflags="-mcpu=$cpu"
3661         ;;
3662         ultrasparc*|niagara[234])
3663             cpuflags="-mcpu=$cpu"
3664         ;;
3665     esac
3666
3667 elif enabled x86; then
3668
3669     case $cpu in
3670         i[345]86|pentium)
3671             cpuflags="-march=$cpu"
3672             disable mmx
3673         ;;
3674         # targets that do NOT support nopl and conditional mov (cmov)
3675         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3676             cpuflags="-march=$cpu"
3677             disable i686
3678         ;;
3679         # targets that do support nopl and conditional mov (cmov)
3680         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3681             cpuflags="-march=$cpu"
3682             enable i686
3683             enable fast_cmov
3684         ;;
3685         # targets that do support conditional mov but on which it's slow
3686         pentium4|pentium4m|prescott|nocona)
3687             cpuflags="-march=$cpu"
3688             enable i686
3689             disable fast_cmov
3690         ;;
3691     esac
3692
3693 fi
3694
3695 if [ "$cpu" != generic ]; then
3696     add_cflags  $cpuflags
3697     add_asflags $cpuflags
3698 fi
3699
3700 # compiler sanity check
3701 check_exec <<EOF
3702 int main(void){ return 0; }
3703 EOF
3704 if test "$?" != 0; then
3705     echo "$cc is unable to create an executable file."
3706     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3707         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3708         echo "Only do this if you know what cross compiling means."
3709     fi
3710     die "C compiler test failed."
3711 fi
3712
3713 add_cppflags -D_ISOC99_SOURCE
3714 add_cxxflags -D__STDC_CONSTANT_MACROS
3715 check_cflags -std=c99
3716 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3717 #include <stdlib.h>
3718 EOF
3719 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3720 #include <stdlib.h>
3721 EOF
3722
3723 add_host_cppflags -D_ISOC99_SOURCE
3724 check_host_cflags -std=c99
3725 check_host_cflags -Wall
3726 check_host_cflags -O3
3727
3728 check_64bit(){
3729     arch32=$1
3730     arch64=$2
3731     expr=$3
3732     check_code cc "" "int test[2*($expr) - 1]" &&
3733         subarch=$arch64 || subarch=$arch32
3734 }
3735
3736 case "$arch" in
3737     aarch64|alpha|ia64)
3738         spic=$shared
3739     ;;
3740     mips)
3741         check_64bit mips mips64 '_MIPS_SIM > 1'
3742         spic=$shared
3743     ;;
3744     parisc)
3745         check_64bit parisc parisc64 'sizeof(void *) > 4'
3746         spic=$shared
3747     ;;
3748     ppc)
3749         check_64bit ppc ppc64 'sizeof(void *) > 4'
3750         spic=$shared
3751     ;;
3752     s390)
3753         check_64bit s390 s390x 'sizeof(void *) > 4'
3754         spic=$shared
3755     ;;
3756     sparc)
3757         check_64bit sparc sparc64 'sizeof(void *) > 4'
3758         spic=$shared
3759     ;;
3760     x86)
3761         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3762         if test "$subarch" = "x86_64"; then
3763             spic=$shared
3764         fi
3765     ;;
3766     ppc)
3767         check_cc <<EOF && subarch="ppc64"
3768         int test[(int)sizeof(char*) - 7];
3769 EOF
3770     ;;
3771 esac
3772
3773 enable $subarch
3774 enabled spic && enable_weak pic
3775
3776 # OS specific
3777 case $target_os in
3778     aix)
3779         SHFLAGS=-shared
3780         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3781         enabled shared && add_ldflags -Wl,-brtl
3782         ;;
3783     haiku)
3784         prefix_default="/boot/common"
3785         network_extralibs="-lnetwork"
3786         host_libs=
3787         ;;
3788     sunos)
3789         SHFLAGS='-shared -Wl,-h,$$(@F)'
3790         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3791         network_extralibs="-lsocket -lnsl"
3792         # When using suncc to build, the Solaris linker will mark
3793         # an executable with each instruction set encountered by
3794         # the Solaris assembler.  As our libraries contain their own
3795         # guards for processor-specific code, instead suppress
3796         # generation of the HWCAPS ELF section on Solaris x86 only.
3797         enabled_all suncc x86 &&
3798             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3799             add_ldflags -Wl,-M,mapfile
3800         nm_default='nm -P -g'
3801         ;;
3802     netbsd)
3803         disable symver
3804         oss_indev_extralibs="-lossaudio"
3805         oss_outdev_extralibs="-lossaudio"
3806         enabled gcc || check_ldflags -Wl,-zmuldefs
3807         ;;
3808     openbsd|bitrig)
3809         disable symver
3810         SHFLAGS='-shared'
3811         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3812         SLIB_INSTALL_LINKS=
3813         oss_indev_extralibs="-lossaudio"
3814         oss_outdev_extralibs="-lossaudio"
3815         ;;
3816     dragonfly)
3817         disable symver
3818         ;;
3819     freebsd)
3820         ;;
3821     bsd/os)
3822         add_extralibs -lpoll -lgnugetopt
3823         strip="strip -d"
3824         ;;
3825     darwin)
3826         gas="gas-preprocessor.pl $cc"
3827         enabled ppc && add_asflags -force_cpusubtype_ALL
3828         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3829         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3830         strip="${strip} -x"
3831         add_ldflags -Wl,-dynamic,-search_paths_first
3832         SLIBSUF=".dylib"
3833         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3834         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3835         objformat="macho"
3836         enabled x86_64 && objformat="macho64"
3837         enabled_any pic shared ||
3838             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3839         ;;
3840     mingw32*)
3841         if test $target_os = "mingw32ce"; then
3842             disable network
3843         else
3844             target_os=mingw32
3845         fi
3846         LIBTARGET=i386
3847         if enabled x86_64; then
3848             LIBTARGET="i386:x86-64"
3849         elif enabled arm; then
3850             LIBTARGET=arm-wince
3851         fi
3852         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3853         check_ldflags -Wl,--nxcompat
3854         check_ldflags -Wl,--dynamicbase
3855         shlibdir_default="$bindir_default"
3856         SLIBPREF=""
3857         SLIBSUF=".dll"
3858         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3859         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3860         dlltool="${cross_prefix}dlltool"
3861         if check_cmd lib.exe -list; then
3862             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3863             if enabled x86_64; then
3864                 LIBTARGET=x64
3865             fi
3866         elif check_cmd $dlltool --version; then
3867             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3868         fi
3869         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3870         SLIB_INSTALL_LINKS=
3871         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3872         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3873         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3874         objformat="win32"
3875         ranlib=:
3876         enable dos_paths
3877         ;;
3878     win32|win64)
3879         disable symver
3880         if enabled shared; then
3881             # Link to the import library instead of the normal static library
3882             # for shared libs.
3883             LD_LIB='%.lib'
3884             # Cannot build both shared and static libs with MSVC or icl.
3885             disable static
3886         fi
3887         shlibdir_default="$bindir_default"
3888         SLIBPREF=""
3889         SLIBSUF=".dll"
3890         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3891         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3892         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3893         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3894         SLIB_INSTALL_LINKS=
3895         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3896         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3897         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3898         objformat="win32"
3899         ranlib=:
3900         enable dos_paths
3901         ;;
3902     cygwin*)
3903         target_os=cygwin
3904         shlibdir_default="$bindir_default"
3905         SLIBPREF="cyg"
3906         SLIBSUF=".dll"
3907         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3908         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3909         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3910         SLIB_INSTALL_LINKS=
3911         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3912         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3913         objformat="win32"
3914         enable dos_paths
3915         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3916         ;;
3917     *-dos|freedos|opendos)
3918         network_extralibs="-lsocket"
3919         objformat="coff"
3920         enable dos_paths
3921         add_cppflags -U__STRICT_ANSI__
3922         ;;
3923     linux)
3924         enable dv1394
3925         ;;
3926     irix*)
3927         target_os=irix
3928         ranlib="echo ignoring ranlib"
3929         ;;
3930     os/2*)
3931         strip="lxlite -CS"
3932         ln_s="cp -f"
3933         objformat="aout"
3934         add_cppflags -D_GNU_SOURCE
3935         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3936         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3937         LIBSUF="_s.a"
3938         SLIBPREF=""
3939         SLIBSUF=".dll"
3940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3942         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3943             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3944             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3945             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3946             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3947             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3948         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3949             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3950         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3951         enable dos_paths
3952         enable_weak os2threads
3953         ;;
3954     gnu/kfreebsd)
3955         add_cppflags -D_BSD_SOURCE
3956         ;;
3957     gnu)
3958         ;;
3959     qnx)
3960         add_cppflags -D_QNX_SOURCE
3961         network_extralibs="-lsocket"
3962         ;;
3963     symbian)
3964         SLIBSUF=".dll"
3965         enable dos_paths
3966         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3967         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3968         add_ldflags -Wl,--target1-abs,--no-undefined \
3969                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3970                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3971         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3972                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3973                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3974         ;;
3975     osf1)
3976         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3977         ;;
3978     minix)
3979         ;;
3980     plan9)
3981         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3982                      -D_REENTRANT_SOURCE        \
3983                      -D_RESEARCH_SOURCE         \
3984                      -DFD_SETSIZE=96            \
3985                      -DHAVE_SOCK_OPTS
3986         add_compat strtod.o strtod=avpriv_strtod
3987         network_extralibs='-lbsd'
3988         exeobjs=compat/plan9/main.o
3989         disable ffserver
3990         cp_f='cp'
3991         ;;
3992     none)
3993         ;;
3994     *)
3995         die "Unknown OS '$target_os'."
3996         ;;
3997 esac
3998
3999 # determine libc flavour
4000
4001 probe_libc(){
4002     pfx=$1
4003     pfx_no_=${pfx%_}
4004     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4005     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4006         eval ${pfx}libc_type=uclibc
4007         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4008     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4009         eval ${pfx}libc_type=glibc
4010         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4011     # MinGW headers can be installed on Cygwin, so check for newlib first.
4012     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4013         eval ${pfx}libc_type=newlib
4014         add_${pfx}cppflags -U__STRICT_ANSI__
4015     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4016     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4017         eval ${pfx}libc_type=mingw64
4018         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4019             add_compat msvcrt/snprintf.o
4020             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4021         fi
4022         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4023         eval test \$${pfx_no_}cc_type = "gcc" &&
4024             add_${pfx}cppflags -D__printf__=__gnu_printf__
4025     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4026          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4027         eval ${pfx}libc_type=mingw32
4028         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4029             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4030             die "ERROR: MinGW32 runtime version must be >= 3.15."
4031         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4032         eval test \$${pfx_no_}cc_type = "gcc" &&
4033             add_${pfx}cppflags -D__printf__=__gnu_printf__
4034     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4035         eval ${pfx}libc_type=msvcrt
4036         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4037         # 0x601 by default unless something else is set by the user.
4038         # This can easily lead to us detecting functions only present
4039         # in such new versions and producing binaries requiring windows 7.0.
4040         # Therefore explicitly set the default to XP unless the user has
4041         # set something else on the command line.
4042         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4043             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4044     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4045         eval ${pfx}libc_type=klibc
4046     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4047         eval ${pfx}libc_type=bionic
4048     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4049         eval ${pfx}libc_type=solaris
4050         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4051     fi
4052 }
4053
4054 probe_libc
4055 test -n "$libc_type" && enable libc_$libc_type
4056 probe_libc host_
4057 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4058
4059 case $libc_type in
4060     bionic)
4061         add_compat strtod.o strtod=avpriv_strtod
4062         ;;
4063     msvcrt)
4064         add_compat strtod.o strtod=avpriv_strtod
4065         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4066                                      _snprintf=avpriv_snprintf  \
4067                                      vsnprintf=avpriv_vsnprintf
4068         ;;
4069 esac
4070
4071 # hacks for compiler/libc/os combinations
4072
4073 if enabled_all tms470 libc_glibc; then
4074     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4075     add_cppflags -D__USER_LABEL_PREFIX__=
4076     add_cppflags -D__builtin_memset=memset
4077     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4078     add_cflags   -pds=48    # incompatible redefinition of macro
4079 fi
4080
4081 if enabled_all ccc libc_glibc; then
4082     add_ldflags -Wl,-z,now  # calls to libots crash without this
4083 fi
4084
4085 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4086     add_cppflags '-I\$(SRC_PATH)/compat/float'
4087
4088 esc(){
4089     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4090 }
4091
4092 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4093
4094 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4095
4096 set_default $PATHS_LIST
4097 set_default nm
4098
4099 # we need to build at least one lib type
4100 if ! enabled_any static shared; then
4101     cat <<EOF
4102 At least one library type must be built.
4103 Specify --enable-static to build the static libraries or --enable-shared to
4104 build the shared libraries as well. To only build the shared libraries specify
4105 --disable-static in addition to --enable-shared.
4106 EOF
4107     exit 1;
4108 fi
4109
4110 # backward compatibility layer for incompatible_libav/fork_abi
4111 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4112 enabled incompatible_libav_abi && enable incompatible_fork_abi
4113
4114 die_license_disabled() {
4115     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4116 }
4117
4118 die_license_disabled_gpl() {
4119     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4120 }
4121
4122 die_license_disabled gpl frei0r
4123 die_license_disabled gpl libcdio
4124 die_license_disabled gpl libutvideo
4125 die_license_disabled gpl libvidstab
4126 die_license_disabled gpl libx264
4127 die_license_disabled gpl libx265
4128 die_license_disabled gpl libxavs
4129 die_license_disabled gpl libxvid
4130 die_license_disabled gpl libzvbi
4131 die_license_disabled gpl x11grab
4132
4133 die_license_disabled nonfree libaacplus
4134 die_license_disabled nonfree libfaac
4135 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4136 enabled gpl && die_license_disabled_gpl nonfree openssl
4137
4138 die_license_disabled version3 libopencore_amrnb
4139 die_license_disabled version3 libopencore_amrwb
4140 die_license_disabled version3 libvo_aacenc
4141 die_license_disabled version3 libvo_amrwbenc
4142
4143 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4144
4145 disabled optimizations || check_cflags -fomit-frame-pointer
4146
4147 enable_weak_pic() {
4148     disabled pic && return
4149     enable pic
4150     add_cppflags -DPIC
4151     case "$target_os" in
4152     mingw*|cygwin*)
4153         ;;
4154     *)
4155         add_cflags -fPIC
4156         ;;
4157     esac
4158     add_asflags  -fPIC
4159 }
4160
4161 enabled pic && enable_weak_pic
4162
4163 check_cc <<EOF || die "Symbol mangling check failed."
4164 int ff_extern;
4165 EOF
4166 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4167 extern_prefix=${sym%%ff_extern*}
4168
4169 check_cc <<EOF && enable_weak inline_asm
4170 void foo(void) { __asm__ volatile ("" ::); }
4171 EOF
4172
4173 _restrict=
4174 for restrict_keyword in restrict __restrict__ __restrict; do
4175     check_cc <<EOF && _restrict=$restrict_keyword && break
4176 void foo(char * $restrict_keyword p);
4177 EOF
4178 done
4179
4180 check_cc <<EOF && enable pragma_deprecated
4181 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_packed
4185 struct { int x; } __attribute__((packed)) x;
4186 EOF
4187
4188 check_cc <<EOF && enable attribute_may_alias
4189 union { int x; } __attribute__((may_alias)) x;
4190 EOF
4191
4192 check_cc <<EOF || die "endian test failed"
4193 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4194 EOF
4195 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4196
4197 check_inline_asm inline_asm_labels '"1:\n"'
4198
4199 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4200
4201 if enabled aarch64; then
4202     # internal assembler in clang 3.3 does not support this instruction
4203     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4204     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4205
4206     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4207
4208 elif enabled alpha; then
4209
4210     check_cflags -mieee
4211
4212 elif enabled arm; then
4213
4214     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4215 float func(float a, float b){ return a+b; }
4216 EOF
4217
4218     enabled thumb && check_cflags -mthumb || check_cflags -marm
4219     nogas=die
4220
4221     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4222         enable vfp_args
4223     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4224         case "${cross_prefix:-$cc}" in
4225             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4226             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4227 __asm__ (".eabi_attribute 28, 1");
4228 int main(void) { return 0; }
4229 EOF
4230         esac
4231         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4232     fi
4233
4234     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4235     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4236     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4237     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4238     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4239     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4240
4241     [ $target_os = linux ] ||
4242         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4243             $ARCH_EXT_LIST_ARM
4244
4245     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4246
4247     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4248
4249 elif enabled mips; then
4250
4251     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4252     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4253      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4254     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4255      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4256     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4257      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4258     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4259      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4260
4261 elif enabled parisc; then
4262
4263     if enabled gcc; then
4264         case $($cc -dumpversion) in
4265             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4266         esac
4267     fi
4268
4269 elif enabled ppc; then
4270
4271     enable local_aligned_8 local_aligned_16
4272
4273     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4274     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4275     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4276     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4277
4278     # AltiVec flags: The FSF version of GCC differs from the Apple version
4279     if enabled altivec; then
4280         if ! enabled_any pic ppc64; then
4281             nogas=warn
4282         fi
4283         check_cflags -maltivec -mabi=altivec &&
4284         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4285         check_cflags -faltivec
4286
4287         # check if our compiler supports Motorola AltiVec C API
4288         check_cc <<EOF || disable altivec
4289 $inc_altivec_h
4290 int main(void) {
4291     vector signed int v1 = (vector signed int) { 0 };
4292     vector signed int v2 = (vector signed int) { 1 };
4293     v1 = vec_add(v1, v2);
4294     return 0;
4295 }
4296 EOF
4297
4298         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4299     fi
4300
4301 elif enabled x86; then
4302
4303     check_builtin rdtsc    intrin.h   "__rdtsc()"
4304     check_builtin mm_empty mmintrin.h "_mm_empty()"
4305
4306     enable local_aligned_8 local_aligned_16
4307
4308     # check whether EBP is available on x86
4309     # As 'i' is stored on the stack, this program will crash
4310     # if the base pointer is used to access it because the
4311     # base pointer is cleared in the inline assembly code.
4312     check_exec_crash <<EOF && enable ebp_available
4313 volatile int i=0;
4314 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4315 return i;
4316 EOF
4317
4318     # check whether EBX is available on x86
4319     check_inline_asm ebx_available '""::"b"(0)' &&
4320         check_inline_asm ebx_available '"":::"%ebx"'
4321
4322     # check whether xmm clobbers are supported
4323     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4324
4325     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4326         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4327
4328     # check whether binutils is new enough to compile SSSE3/MMXEXT
4329     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4330     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4331
4332     if ! disabled_any asm mmx yasm; then
4333         if check_cmd $yasmexe --version; then
4334             enabled x86_64 && yasm_extra="-m amd64"
4335             yasm_debug="-g dwarf2"
4336         elif check_cmd nasm -v; then
4337             yasmexe=nasm
4338             yasm_debug="-g -F dwarf"
4339             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4340         fi
4341
4342         YASMFLAGS="-f $objformat $yasm_extra"
4343         enabled pic               && append YASMFLAGS "-DPIC"
4344         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4345         case "$objformat" in
4346             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4347         esac
4348
4349         check_yasm "movbe ecx, [5]" && enable yasm ||
4350             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4351         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4352         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4353         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4354         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4355         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4356         check_yasm "CPU amdnop" || disable cpunop
4357     fi
4358
4359     case "$cpu" in
4360         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4361             disable fast_clz
4362         ;;
4363     esac
4364
4365 fi
4366
4367 if enabled asm; then
4368     as=${gas:=$as}
4369     check_as <<EOF && enable gnu_as || \
4370         $nogas "GNU assembler not found, install gas-preprocessor"
4371 .macro m n
4372 \n: .int 0
4373 .endm
4374 m x
4375 EOF
4376 fi
4377
4378 check_ldflags -Wl,--as-needed
4379
4380 if check_func dlopen; then
4381     ldl=
4382 elif check_func dlopen -ldl; then
4383     ldl=-ldl
4384 fi
4385
4386 if ! disabled network; then
4387     check_func getaddrinfo $network_extralibs
4388     check_func getservbyport $network_extralibs
4389     check_func inet_aton $network_extralibs
4390
4391     check_type netdb.h "struct addrinfo"
4392     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4393     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4394     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4395     check_type poll.h "struct pollfd"
4396     check_type netinet/sctp.h "struct sctp_event_subscribe"
4397     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4398     check_type netinet/in.h "struct sockaddr_in6"
4399     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4400     check_type "sys/types.h sys/socket.h" socklen_t
4401
4402     # Prefer arpa/inet.h over winsock2
4403     if check_header arpa/inet.h ; then
4404         check_func closesocket
4405     elif check_header winsock2.h ; then
4406         check_func_headers winsock2.h closesocket -lws2 &&
4407             network_extralibs="-lws2" ||
4408         { check_func_headers winsock2.h closesocket -lws2_32 &&
4409             network_extralibs="-lws2_32"; } || disable winsock2_h network
4410         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4411
4412         check_type ws2tcpip.h socklen_t
4413         check_type ws2tcpip.h "struct addrinfo"
4414         check_type ws2tcpip.h "struct group_source_req"
4415         check_type ws2tcpip.h "struct ip_mreq_source"
4416         check_type ws2tcpip.h "struct ipv6_mreq"
4417         check_type winsock2.h "struct pollfd"
4418         check_struct winsock2.h "struct sockaddr" sa_len
4419         check_type ws2tcpip.h "struct sockaddr_in6"
4420         check_type ws2tcpip.h "struct sockaddr_storage"
4421     else
4422         disable network
4423     fi
4424 fi
4425
4426 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4427 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4428 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4429 check_builtin sarestart signal.h "SA_RESTART"
4430 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4431
4432 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4433 check_func  ${malloc_prefix}memalign            && enable memalign
4434 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4435
4436 check_func  access
4437 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4438 check_func  fcntl
4439 check_func  fork
4440 check_func  gethrtime
4441 check_func  getopt
4442 check_func  getrusage
4443 check_func  gettimeofday
4444 check_func  isatty
4445 check_func  localtime_r
4446 check_func  mach_absolute_time
4447 check_func  mkstemp
4448 check_func  mmap
4449 check_func  mprotect
4450 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4451 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4452 check_func  sched_getaffinity
4453 check_func  setrlimit
4454 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4455 check_func  strerror_r
4456 check_func  sysconf
4457 check_func  sysctl
4458 check_func  usleep
4459
4460 check_func_headers conio.h kbhit
4461 check_func_headers io.h setmode
4462 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4463 check_func_headers stdlib.h getenv
4464
4465 check_func_headers windows.h GetProcessAffinityMask
4466 check_func_headers windows.h GetProcessTimes
4467 check_func_headers windows.h GetSystemTimeAsFileTime
4468 check_func_headers windows.h MapViewOfFile
4469 check_func_headers windows.h PeekNamedPipe
4470 check_func_headers windows.h SetConsoleTextAttribute
4471 check_func_headers windows.h Sleep
4472 check_func_headers windows.h VirtualAlloc
4473 check_func_headers glob.h glob
4474 enabled xlib &&
4475     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4476
4477 check_header cl/cl.h
4478 check_header direct.h
4479 check_header dlfcn.h
4480 check_header dxva.h
4481 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4482 check_header io.h
4483 check_header libcrystalhd/libcrystalhd_if.h
4484 check_header mach/mach_time.h
4485 check_header malloc.h
4486 check_header poll.h
4487 check_header sys/mman.h
4488 check_header sys/param.h
4489 check_header sys/resource.h
4490 check_header sys/select.h
4491 check_header sys/time.h
4492 check_header sys/un.h
4493 check_header termios.h
4494 check_header unistd.h
4495 check_header vdpau/vdpau.h
4496 check_header vdpau/vdpau_x11.h
4497 check_header VideoDecodeAcceleration/VDADecoder.h
4498 check_header windows.h
4499 check_header X11/extensions/XvMClib.h
4500 check_header asm/types.h
4501
4502 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4503 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4504 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4505
4506 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4507
4508 if ! disabled w32threads && ! enabled pthreads; then
4509     check_func_headers "windows.h process.h" _beginthreadex &&
4510         enable w32threads || disable w32threads
4511 fi
4512
4513 # check for some common methods of building with pthread support
4514 # do this before the optional library checks as some of them require pthreads
4515 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4516     enable pthreads
4517     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4518         add_cflags -pthread
4519         add_extralibs -pthread
4520     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4521         add_cflags -pthreads
4522         add_extralibs -pthreads
4523     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4524         add_extralibs -lpthreadGC2
4525     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4526         :
4527     elif ! check_func pthread_join && ! check_func pthread_create; then
4528         disable pthreads
4529     fi
4530     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4531 fi
4532
4533
4534 if enabled pthreads; then
4535   check_func pthread_cancel
4536 fi
4537
4538 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4539 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4540
4541 check_lib math.h sin -lm && LIBM="-lm"
4542 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4543
4544 atan2f_args=2
4545 ldexpf_args=2
4546 powf_args=2
4547
4548 for func in $MATH_FUNCS; do
4549     eval check_mathfunc $func \${${func}_args:-1}
4550 done
4551
4552 # these are off by default, so fail if requested and not available
4553 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4554                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4555                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4556 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4557 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4558 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4559 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4560 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4561 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4562 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4563 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4564 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4565 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4566                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4567                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4568 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4569 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4570 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4571 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4572 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4573 enabled libfreetype       && require_libfreetype
4574 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4575 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4576                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4577                                done || die "ERROR: libgsm not found"; }
4578 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4579 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4580 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4581 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4582 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4583 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4584 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4585 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4586                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4587                                die "ERROR: libopenjpeg not found"; }
4588 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4589 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4590 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4591 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4592 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4593 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4594 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4595 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4596 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4597 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4598     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4599     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4600 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4601 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4602                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4603                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4604 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4605 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4606 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4607 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4608 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4609 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4610 enabled libvpx            && {
4611     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4612                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4613     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4614                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4615     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4616     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4617 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4618 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4619 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4620                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4621                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4622 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4623                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4624                                die "ERROR: libx265 version must be >= 13."; }
4625 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4626 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4627 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4628 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4629 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4630                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4631                                die "ERROR: openal not found"; } &&
4632                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4633                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4634 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4635                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4636                                die "ERROR: opencl not found"; } &&
4637                              { ! enabled_any w32threads os2threads ||
4638                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4639                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4640                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4641                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4642 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4643                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4644                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4645                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4646                                die "ERROR: opengl not found."
4647                              }
4648 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4649                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4650                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4651                                die "ERROR: openssl not found"; }
4652 enabled qtkit_indev      && { check_header QTKit/QTKit.h || disable qtkit_indev; }
4653
4654 if enabled gnutls; then
4655     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4656     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4657 fi
4658
4659 # libdc1394 check
4660 if enabled libdc1394; then
4661     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4662         enable libdc1394_2; } ||
4663     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4664         enable libdc1394_1; } ||
4665     die "ERROR: No version of libdc1394 found "
4666 fi
4667
4668 SDL_CONFIG="${cross_prefix}sdl-config"
4669 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4670     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4671     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4672     enable sdl
4673 else
4674   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4675     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4676     sdl_libs=$("${SDL_CONFIG}" --libs)
4677     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4678     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4679     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4680     enable sdl
4681   fi
4682 fi
4683 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4684
4685 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4686 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4687 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4688 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4689 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4690
4691 check_header linux/fb.h
4692 check_header linux/videodev.h
4693 check_header linux/videodev2.h
4694 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4695
4696 check_header sys/videoio.h
4697
4698 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4699 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4700 # w32api 3.12 had it defined wrong
4701 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4702
4703 check_type "dshow.h" IBaseFilter
4704
4705 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4706 { check_header dev/bktr/ioctl_meteor.h &&
4707   check_header dev/bktr/ioctl_bt848.h; } ||
4708 { check_header machine/ioctl_meteor.h &&
4709   check_header machine/ioctl_bt848.h; } ||
4710 { check_header dev/video/meteor/ioctl_meteor.h &&
4711   check_header dev/video/bktr/ioctl_bt848.h; } ||
4712 check_header dev/ic/bt8xx.h
4713
4714 check_header sndio.h
4715 if check_struct sys/soundcard.h audio_buf_info bytes; then
4716     enable_safe sys/soundcard.h
4717 else
4718     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4719     #include <sys/soundcard.h>
4720     audio_buf_info abc;
4721 EOF
4722 fi
4723 check_header soundcard.h
4724
4725 enabled_any alsa_indev alsa_outdev &&
4726     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4727
4728 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4729     check_func jack_port_get_latency_range -ljack
4730
4731 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4732
4733 if enabled libcdio; then
4734     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4735     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4736     die "ERROR: libcdio-paranoia not found"
4737 fi
4738
4739 enabled xlib &&
4740     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4741
4742 enabled x11grab                                           &&
4743 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4744 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4745 { enabled xlib || die "ERROR: Xlib not found"; }
4746
4747 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4748
4749 enabled vaapi &&
4750     check_lib va/va.h vaInitialize -lva ||
4751     disable vaapi
4752
4753 enabled vdpau &&
4754     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4755     disable vdpau
4756
4757 enabled vdpau && enabled xlib &&
4758     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4759     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4760     enable vdpau_x11
4761
4762 # Funny iconv installations are not unusual, so check it after all flags have been set
4763 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4764
4765 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4766
4767 # add some useful compiler flags if supported
4768 check_cflags -Wdeclaration-after-statement
4769 check_cflags -Wall
4770 check_cfla