apedsp: move to llauddsp
[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-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [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 de/encoding 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   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     as_dn_directive
1722     as_func
1723     asm_mod_q
1724     attribute_may_alias
1725     attribute_packed
1726     ebp_available
1727     ebx_available
1728     gnu_as
1729     gnu_windres
1730     ibm_asm
1731     inline_asm_labels
1732     inline_asm_nonlocal_labels
1733     inline_asm_direct_symbol_refs
1734     pragma_deprecated
1735     rsync_contimeout
1736     symver_asm_label
1737     symver_gnu_asm
1738     vfp_args
1739     xform_asm
1740     xmm_clobbers
1741 "
1742
1743 TYPES_LIST="
1744     socklen_t
1745     struct_addrinfo
1746     struct_group_source_req
1747     struct_ip_mreq_source
1748     struct_ipv6_mreq
1749     struct_pollfd
1750     struct_rusage_ru_maxrss
1751     struct_sctp_event_subscribe
1752     struct_sockaddr_in6
1753     struct_sockaddr_sa_len
1754     struct_sockaddr_storage
1755     struct_stat_st_mtim_tv_nsec
1756     struct_v4l2_frmivalenum_discrete
1757 "
1758
1759 HAVE_LIST="
1760     $ARCH_EXT_LIST
1761     $(add_suffix _external $ARCH_EXT_LIST)
1762     $(add_suffix _inline   $ARCH_EXT_LIST)
1763     $ARCH_FEATURES
1764     $ATOMICS_LIST
1765     $BUILTIN_LIST
1766     $HAVE_LIST_CMDLINE
1767     $HAVE_LIST_PUB
1768     $HEADERS_LIST
1769     $MATH_FUNCS
1770     $SYSTEM_FUNCS
1771     $THREADS_LIST
1772     $TOOLCHAIN_FEATURES
1773     $TYPES_LIST
1774     atomics_native
1775     dos_paths
1776     dxva2api_cobj
1777     dxva2_lib
1778     libc_msvcrt
1779     libdc1394_1
1780     libdc1394_2
1781     makeinfo
1782     perl
1783     pod2man
1784     sdl
1785     texi2html
1786     threads
1787     vdpau_x11
1788     xlib
1789 "
1790
1791 # options emitted with CONFIG_ prefix but not available on the command line
1792 CONFIG_EXTRA="
1793     aandcttables
1794     ac3dsp
1795     audio_frame_queue
1796     cabac
1797     dsputil
1798     exif
1799     frame_thread_encoder
1800     gcrypt
1801     golomb
1802     gplv3
1803     h263dsp
1804     h264chroma
1805     h264dsp
1806     h264pred
1807     h264qpel
1808     hpeldsp
1809     huffman
1810     huffyuvdsp
1811     huffyuvencdsp
1812     intrax8
1813     lgplv3
1814     llauddsp
1815     llviddsp
1816     lpc
1817     mpegaudio
1818     mpegaudiodsp
1819     mpegvideo
1820     mpegvideoenc
1821     nettle
1822     qpeldsp
1823     rangecoder
1824     riffdec
1825     riffenc
1826     rtpdec
1827     rtpenc_chain
1828     sinewin
1829     tpeldsp
1830     videodsp
1831     vp3dsp
1832 "
1833
1834 CMDLINE_SELECT="
1835     $ARCH_EXT_LIST
1836     $CONFIG_LIST
1837     $HAVE_LIST_CMDLINE
1838     $THREADS_LIST
1839     asm
1840     cross_compile
1841     debug
1842     extra_warnings
1843     logging
1844     lto
1845     optimizations
1846     rpath
1847     stripping
1848 "
1849
1850 PATHS_LIST="
1851     bindir
1852     datadir
1853     docdir
1854     incdir
1855     libdir
1856     mandir
1857     prefix
1858     shlibdir
1859 "
1860
1861 CMDLINE_SET="
1862     $PATHS_LIST
1863     ar
1864     arch
1865     as
1866     assert_level
1867     build_suffix
1868     cc
1869     cpu
1870     cross_prefix
1871     cxx
1872     dep_cc
1873     extra_version
1874     gas
1875     host_cc
1876     host_cflags
1877     host_ld
1878     host_ldflags
1879     host_libs
1880     host_os
1881     install
1882     ld
1883     logfile
1884     malloc_prefix
1885     nm
1886     optflags
1887     pkg_config
1888     pkg_config_flags
1889     progs_suffix
1890     random_seed
1891     ranlib
1892     samples
1893     strip
1894     sysinclude
1895     sysroot
1896     target_exec
1897     target_os
1898     target_path
1899     target_samples
1900     tempprefix
1901     toolchain
1902     valgrind
1903     yasmexe
1904 "
1905
1906 CMDLINE_APPEND="
1907     extra_cflags
1908     extra_cxxflags
1909     host_cppflags
1910 "
1911
1912 # code dependency declarations
1913
1914 # architecture extensions
1915
1916 armv5te_deps="arm"
1917 armv6_deps="arm"
1918 armv6t2_deps="arm"
1919 armv8_deps="aarch64"
1920 neon_deps_any="aarch64 arm"
1921 vfp_deps_any="aarch64 arm"
1922 vfpv3_deps="vfp"
1923
1924 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1925
1926 mipsfpu_deps="mips"
1927 mips32r2_deps="mips"
1928 mipsdspr1_deps="mips"
1929 mipsdspr2_deps="mips"
1930
1931 altivec_deps="ppc"
1932 ppc4xx_deps="ppc"
1933
1934 cpunop_deps="i686"
1935 x86_64_select="i686"
1936 x86_64_suggest="fast_cmov"
1937
1938 amd3dnow_deps="mmx"
1939 amd3dnowext_deps="amd3dnow"
1940 i686_deps="x86"
1941 mmx_deps="x86"
1942 mmxext_deps="mmx"
1943 sse_deps="mmxext"
1944 sse2_deps="sse"
1945 sse3_deps="sse2"
1946 ssse3_deps="sse3"
1947 sse4_deps="ssse3"
1948 sse42_deps="sse4"
1949 avx_deps="sse42"
1950 xop_deps="avx"
1951 fma3_deps="avx"
1952 fma4_deps="avx"
1953 avx2_deps="avx"
1954
1955 mmx_external_deps="yasm"
1956 mmx_inline_deps="inline_asm"
1957 mmx_suggest="mmx_external mmx_inline"
1958
1959 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1960     eval dep=\$${ext}_deps
1961     eval ${ext}_external_deps='"${dep}_external"'
1962     eval ${ext}_inline_deps='"${dep}_inline"'
1963     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1964 done
1965
1966 aligned_stack_if_any="aarch64 ppc x86"
1967 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1968 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1969 fast_unaligned_if_any="aarch64 ppc x86"
1970
1971 need_memalign="altivec neon sse"
1972
1973 # system capabilities
1974
1975 symver_if_any="symver_asm_label symver_gnu_asm"
1976
1977 # threading support
1978 atomics_gcc_if="sync_val_compare_and_swap"
1979 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1980 atomics_win32_if="MemoryBarrier"
1981 atomics_native_if_any="$ATOMICS_LIST"
1982 w32threads_deps="atomics_native"
1983 threads_if_any="$THREADS_LIST"
1984
1985 # subsystems
1986 dct_select="rdft"
1987 error_resilience_select="dsputil"
1988 frame_thread_encoder_deps="encoders threads"
1989 mdct_select="fft"
1990 rdft_select="fft"
1991 mpegaudio_select="mpegaudiodsp"
1992 mpegaudiodsp_select="dct"
1993 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1994 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1995
1996 # decoders / encoders
1997 aac_decoder_select="mdct sinewin"
1998 aac_encoder_select="audio_frame_queue mdct sinewin"
1999 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2000 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2001 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2002 ac3_encoder_select="mdct ac3dsp dsputil"
2003 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2004 aic_decoder_select="dsputil golomb"
2005 alac_encoder_select="lpc"
2006 als_decoder_select="dsputil"
2007 amrnb_decoder_select="lsp"
2008 amrwb_decoder_select="lsp"
2009 amv_decoder_select="sp5x_decoder exif"
2010 amv_encoder_select="aandcttables"
2011 ape_decoder_select="dsputil llauddsp"
2012 asv1_decoder_select="dsputil"
2013 asv1_encoder_select="dsputil"
2014 asv2_decoder_select="dsputil"
2015 asv2_encoder_select="dsputil"
2016 atrac1_decoder_select="mdct sinewin"
2017 atrac3_decoder_select="mdct"
2018 atrac3p_decoder_select="mdct sinewin"
2019 avrn_decoder_select="exif"
2020 bink_decoder_select="dsputil hpeldsp"
2021 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2022 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2023 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
2024 cllc_decoder_select="dsputil"
2025 comfortnoise_encoder_select="lpc"
2026 cook_decoder_select="dsputil mdct sinewin"
2027 cscd_decoder_select="lzo"
2028 cscd_decoder_suggest="zlib"
2029 dca_decoder_select="mdct"
2030 dirac_decoder_select="dsputil dwt golomb videodsp"
2031 dnxhd_decoder_select="dsputil"
2032 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2033 dvvideo_decoder_select="dsputil"
2034 dvvideo_encoder_select="dsputil"
2035 dxa_decoder_select="zlib"
2036 eac3_decoder_select="ac3_decoder"
2037 eac3_encoder_select="ac3_encoder"
2038 eamad_decoder_select="aandcttables dsputil mpegvideo"
2039 eatgq_decoder_select="aandcttables"
2040 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2041 exr_decoder_select="zlib"
2042 ffv1_decoder_select="golomb rangecoder"
2043 ffv1_encoder_select="rangecoder"
2044 ffvhuff_decoder_select="huffyuv_decoder"
2045 ffvhuff_encoder_select="huffyuv_encoder"
2046 fic_decoder_select="golomb"
2047 flac_decoder_select="golomb"
2048 flac_encoder_select="dsputil golomb lpc"
2049 flashsv_decoder_select="zlib"
2050 flashsv_encoder_select="zlib"
2051 flashsv2_encoder_select="zlib"
2052 flashsv2_decoder_select="zlib"
2053 flv_decoder_select="h263_decoder"
2054 flv_encoder_select="h263_encoder"
2055 fourxm_decoder_select="dsputil"
2056 fraps_decoder_select="dsputil huffman"
2057 g2m_decoder_select="dsputil zlib"
2058 g729_decoder_select="dsputil"
2059 h261_decoder_select="error_resilience mpegvideo"
2060 h261_encoder_select="aandcttables mpegvideoenc"
2061 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2062 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2063 h263i_decoder_select="h263_decoder"
2064 h263p_encoder_select="h263_encoder"
2065 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2066 h264_decoder_suggest="error_resilience"
2067 hevc_decoder_select="cabac dsputil golomb videodsp"
2068 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2069 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2070 iac_decoder_select="imc_decoder"
2071 imc_decoder_select="dsputil fft mdct sinewin"
2072 indeo3_decoder_select="hpeldsp"
2073 interplay_video_decoder_select="hpeldsp"
2074 jpegls_decoder_select="golomb mjpeg_decoder"
2075 jpegls_encoder_select="golomb"
2076 jv_decoder_select="dsputil"
2077 lagarith_decoder_select="huffyuvdsp"
2078 ljpeg_encoder_select="aandcttables mpegvideoenc"
2079 loco_decoder_select="golomb"
2080 mdec_decoder_select="dsputil error_resilience mpegvideo"
2081 metasound_decoder_select="lsp mdct sinewin"
2082 mimic_decoder_select="dsputil hpeldsp"
2083 mjpeg_decoder_select="dsputil hpeldsp exif"
2084 mjpeg_encoder_select="aandcttables mpegvideoenc"
2085 mjpegb_decoder_select="mjpeg_decoder"
2086 mlp_decoder_select="mlp_parser"
2087 motionpixels_decoder_select="dsputil"
2088 mp1_decoder_select="mpegaudio"
2089 mp1float_decoder_select="mpegaudio"
2090 mp2_decoder_select="mpegaudio"
2091 mp2float_decoder_select="mpegaudio"
2092 mp3_decoder_select="mpegaudio"
2093 mp3adu_decoder_select="mpegaudio"
2094 mp3adufloat_decoder_select="mpegaudio"
2095 mp3float_decoder_select="mpegaudio"
2096 mp3on4_decoder_select="mpegaudio"
2097 mp3on4float_decoder_select="mpegaudio"
2098 mpc7_decoder_select="dsputil mpegaudiodsp"
2099 mpc8_decoder_select="mpegaudiodsp"
2100 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2101 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2102 mpeg1video_decoder_select="error_resilience mpegvideo"
2103 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2104 mpeg2video_decoder_select="error_resilience mpegvideo"
2105 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2106 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2107 mpeg4_encoder_select="h263_encoder"
2108 msmpeg4v1_decoder_select="h263_decoder"
2109 msmpeg4v2_decoder_select="h263_decoder"
2110 msmpeg4v2_encoder_select="h263_encoder"
2111 msmpeg4v3_decoder_select="h263_decoder"
2112 msmpeg4v3_encoder_select="h263_encoder"
2113 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2114 mxpeg_decoder_select="mjpeg_decoder"
2115 nellymoser_decoder_select="mdct sinewin"
2116 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2117 nuv_decoder_select="dsputil lzo"
2118 on2avc_decoder_select="mdct"
2119 opus_decoder_deps="swresample"
2120 png_decoder_select="zlib"
2121 png_encoder_select="huffyuvencdsp zlib"
2122 prores_decoder_select="dsputil"
2123 prores_encoder_select="dsputil"
2124 qcelp_decoder_select="lsp"
2125 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2126 ra_144_encoder_select="audio_frame_queue lpc"
2127 ralf_decoder_select="golomb"
2128 rawvideo_decoder_select="dsputil"
2129 rtjpeg_decoder_select="dsputil"
2130 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2131 rv10_encoder_select="h263_encoder"
2132 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2133 rv20_encoder_select="h263_encoder"
2134 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2135 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2136 shorten_decoder_select="golomb"
2137 sipr_decoder_select="lsp"
2138 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2139 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2140 sonic_decoder_select="golomb rangecoder"
2141 sonic_encoder_select="golomb rangecoder"
2142 sonic_ls_encoder_select="golomb rangecoder"
2143 sp5x_decoder_select="mjpeg_decoder"
2144 svq1_decoder_select="hpeldsp"
2145 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2146 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2147 svq3_decoder_suggest="zlib"
2148 tak_decoder_select="dsputil"
2149 theora_decoder_select="vp3_decoder"
2150 thp_decoder_select="mjpeg_decoder"
2151 tiff_decoder_suggest="zlib"
2152 tiff_encoder_suggest="zlib"
2153 truehd_decoder_select="mlp_parser"
2154 truemotion2_decoder_select="dsputil"
2155 truespeech_decoder_select="dsputil"
2156 tscc_decoder_select="zlib"
2157 twinvq_decoder_select="mdct lsp sinewin"
2158 utvideo_decoder_select="dsputil"
2159 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2160 vble_decoder_select="huffyuvdsp"
2161 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2162 vc1image_decoder_select="vc1_decoder"
2163 vorbis_decoder_select="mdct"
2164 vorbis_encoder_select="mdct"
2165 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2166 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2167 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2168 vp6a_decoder_select="vp6_decoder"
2169 vp6f_decoder_select="vp6_decoder"
2170 vp7_decoder_select="h264pred videodsp"
2171 vp8_decoder_select="h264pred videodsp"
2172 vp9_decoder_select="videodsp vp9_parser"
2173 webp_decoder_select="vp8_decoder"
2174 wmapro_decoder_select="mdct sinewin"
2175 wmav1_decoder_select="mdct sinewin"
2176 wmav1_encoder_select="mdct sinewin"
2177 wmav2_decoder_select="mdct sinewin"
2178 wmav2_encoder_select="mdct sinewin"
2179 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2180 wmv1_decoder_select="h263_decoder"
2181 wmv1_encoder_select="h263_encoder"
2182 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2183 wmv2_encoder_select="h263_encoder"
2184 wmv3_decoder_select="vc1_decoder"
2185 wmv3image_decoder_select="wmv3_decoder"
2186 zerocodec_decoder_select="zlib"
2187 zlib_decoder_select="zlib"
2188 zlib_encoder_select="zlib"
2189 zmbv_decoder_select="zlib"
2190 zmbv_encoder_select="zlib"
2191
2192 # hardware accelerators
2193 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2194 dxva2_deps="dxva2api_h"
2195 vaapi_deps="va_va_h"
2196 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2197 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2198 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2199 xvmc_deps="X11_extensions_XvMClib_h"
2200
2201 h263_vaapi_hwaccel_deps="vaapi"
2202 h263_vaapi_hwaccel_select="h263_decoder"
2203 h263_vdpau_hwaccel_deps="vdpau"
2204 h263_vdpau_hwaccel_select="h263_decoder"
2205 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2206 h264_dxva2_hwaccel_deps="dxva2"
2207 h264_dxva2_hwaccel_select="h264_decoder"
2208 h264_vaapi_hwaccel_deps="vaapi"
2209 h264_vaapi_hwaccel_select="h264_decoder"
2210 h264_vda_decoder_deps="vda"
2211 h264_vda_decoder_select="h264_decoder"
2212 h264_vda_hwaccel_deps="vda"
2213 h264_vda_hwaccel_select="h264_decoder"
2214 h264_vda_old_hwaccel_deps="vda"
2215 h264_vda_old_hwaccel_select="h264_decoder"
2216 h264_vdpau_decoder_deps="vdpau"
2217 h264_vdpau_decoder_select="h264_decoder"
2218 h264_vdpau_hwaccel_deps="vdpau"
2219 h264_vdpau_hwaccel_select="h264_decoder"
2220 mpeg_vdpau_decoder_deps="vdpau"
2221 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2222 mpeg_xvmc_hwaccel_deps="xvmc"
2223 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2224 mpeg1_vdpau_decoder_deps="vdpau"
2225 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2226 mpeg1_vdpau_hwaccel_deps="vdpau"
2227 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2228 mpeg1_xvmc_hwaccel_deps="xvmc"
2229 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2230 mpeg2_crystalhd_decoder_select="crystalhd"
2231 mpeg2_dxva2_hwaccel_deps="dxva2"
2232 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2233 mpeg2_vaapi_hwaccel_deps="vaapi"
2234 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2235 mpeg2_vdpau_hwaccel_deps="vdpau"
2236 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_xvmc_hwaccel_deps="xvmc"
2238 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2239 mpeg4_crystalhd_decoder_select="crystalhd"
2240 mpeg4_vaapi_hwaccel_deps="vaapi"
2241 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2242 mpeg4_vdpau_decoder_deps="vdpau"
2243 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2244 mpeg4_vdpau_hwaccel_deps="vdpau"
2245 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2246 msmpeg4_crystalhd_decoder_select="crystalhd"
2247 vc1_crystalhd_decoder_select="crystalhd"
2248 vc1_dxva2_hwaccel_deps="dxva2"
2249 vc1_dxva2_hwaccel_select="vc1_decoder"
2250 vc1_vaapi_hwaccel_deps="vaapi"
2251 vc1_vaapi_hwaccel_select="vc1_decoder"
2252 vc1_vdpau_decoder_deps="vdpau"
2253 vc1_vdpau_decoder_select="vc1_decoder"
2254 vc1_vdpau_hwaccel_deps="vdpau"
2255 vc1_vdpau_hwaccel_select="vc1_decoder"
2256 wmv3_crystalhd_decoder_select="crystalhd"
2257 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2258 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2259 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2260 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2261
2262 # parsers
2263 h264_parser_select="h264_decoder"
2264 hevc_parser_select="hevc_decoder"
2265 mpegvideo_parser_select="error_resilience mpegvideo"
2266 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2267 vc1_parser_select="mpegvideo"
2268
2269 # external libraries
2270 libaacplus_encoder_deps="libaacplus"
2271 libcelt_decoder_deps="libcelt"
2272 libfaac_encoder_deps="libfaac"
2273 libfaac_encoder_select="audio_frame_queue"
2274 libfdk_aac_decoder_deps="libfdk_aac"
2275 libfdk_aac_encoder_deps="libfdk_aac"
2276 libfdk_aac_encoder_select="audio_frame_queue"
2277 libgme_demuxer_deps="libgme"
2278 libgsm_decoder_deps="libgsm"
2279 libgsm_encoder_deps="libgsm"
2280 libgsm_ms_decoder_deps="libgsm"
2281 libgsm_ms_encoder_deps="libgsm"
2282 libilbc_decoder_deps="libilbc"
2283 libilbc_encoder_deps="libilbc"
2284 libmodplug_demuxer_deps="libmodplug"
2285 libmp3lame_encoder_deps="libmp3lame"
2286 libmp3lame_encoder_select="audio_frame_queue"
2287 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2288 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2289 libopencore_amrnb_encoder_select="audio_frame_queue"
2290 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2291 libopenjpeg_decoder_deps="libopenjpeg"
2292 libopenjpeg_encoder_deps="libopenjpeg"
2293 libopus_decoder_deps="libopus"
2294 libopus_encoder_deps="libopus"
2295 libopus_encoder_select="audio_frame_queue"
2296 libquvi_demuxer_deps="libquvi"
2297 libschroedinger_decoder_deps="libschroedinger"
2298 libschroedinger_encoder_deps="libschroedinger"
2299 libshine_encoder_deps="libshine"
2300 libshine_encoder_select="audio_frame_queue"
2301 libspeex_decoder_deps="libspeex"
2302 libspeex_encoder_deps="libspeex"
2303 libspeex_encoder_select="audio_frame_queue"
2304 libstagefright_h264_decoder_deps="libstagefright_h264"
2305 libtheora_encoder_deps="libtheora"
2306 libtwolame_encoder_deps="libtwolame"
2307 libvo_aacenc_encoder_deps="libvo_aacenc"
2308 libvo_aacenc_encoder_select="audio_frame_queue"
2309 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2310 libvorbis_decoder_deps="libvorbis"
2311 libvorbis_encoder_deps="libvorbis"
2312 libvorbis_encoder_select="audio_frame_queue"
2313 libvpx_vp8_decoder_deps="libvpx"
2314 libvpx_vp8_encoder_deps="libvpx"
2315 libvpx_vp9_decoder_deps="libvpx"
2316 libvpx_vp9_encoder_deps="libvpx"
2317 libwavpack_encoder_deps="libwavpack"
2318 libwebp_encoder_deps="libwebp"
2319 libx264_encoder_deps="libx264"
2320 libx264rgb_encoder_deps="libx264"
2321 libx265_encoder_deps="libx265"
2322 libxavs_encoder_deps="libxavs"
2323 libxvid_encoder_deps="libxvid"
2324 libutvideo_decoder_deps="libutvideo"
2325 libutvideo_encoder_deps="libutvideo"
2326 libzvbi_teletext_decoder_deps="libzvbi"
2327
2328 # demuxers / muxers
2329 ac3_demuxer_select="ac3_parser"
2330 asf_demuxer_select="riffdec"
2331 asf_muxer_select="riffenc"
2332 asf_stream_muxer_select="asf_muxer"
2333 avi_demuxer_select="riffdec exif"
2334 avi_muxer_select="riffenc"
2335 avisynth_demuxer_deps="avisynth"
2336 avisynth_demuxer_select="riffdec"
2337 caf_demuxer_select="riffdec"
2338 dirac_demuxer_select="dirac_parser"
2339 dts_demuxer_select="dca_parser"
2340 dtshd_demuxer_select="dca_parser"
2341 dxa_demuxer_select="riffdec"
2342 eac3_demuxer_select="ac3_parser"
2343 f4v_muxer_select="mov_muxer"
2344 flac_demuxer_select="flac_parser"
2345 hds_muxer_select="flv_muxer"
2346 hls_muxer_select="mpegts_muxer"
2347 image2_alias_pix_demuxer_select="image2_demuxer"
2348 image2_brender_pix_demuxer_select="image2_demuxer"
2349 ipod_muxer_select="mov_muxer"
2350 ismv_muxer_select="mov_muxer"
2351 libnut_demuxer_deps="libnut"
2352 libnut_muxer_deps="libnut"
2353 matroska_audio_muxer_select="matroska_muxer"
2354 matroska_demuxer_select="riffdec"
2355 matroska_demuxer_suggest="bzlib lzo zlib"
2356 matroska_muxer_select="riffenc"
2357 mmf_muxer_select="riffenc"
2358 mov_demuxer_select="riffdec"
2359 mov_demuxer_suggest="zlib"
2360 mov_muxer_select="riffenc rtpenc_chain"
2361 mp3_demuxer_select="mpegaudio_parser"
2362 mp4_muxer_select="mov_muxer"
2363 mpegts_muxer_select="adts_muxer latm_muxer"
2364 mpegtsraw_demuxer_select="mpegts_demuxer"
2365 mxf_d10_muxer_select="mxf_muxer"
2366 nut_muxer_select="riffenc"
2367 nuv_demuxer_select="riffdec"
2368 ogg_demuxer_select="golomb"
2369 psp_muxer_select="mov_muxer"
2370 rtp_demuxer_select="sdp_demuxer"
2371 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2372 rtsp_demuxer_select="http_protocol rtpdec"
2373 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2374 sap_demuxer_select="sdp_demuxer"
2375 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2376 sdp_demuxer_select="rtpdec"
2377 smoothstreaming_muxer_select="ismv_muxer"
2378 spdif_muxer_select="aac_parser"
2379 tak_demuxer_select="tak_parser"
2380 tg2_muxer_select="mov_muxer"
2381 tgp_muxer_select="mov_muxer"
2382 vobsub_demuxer_select="mpegps_demuxer"
2383 w64_demuxer_select="wav_demuxer"
2384 w64_muxer_select="wav_muxer"
2385 wav_demuxer_select="riffdec"
2386 wav_muxer_select="riffenc"
2387 webm_muxer_select="riffenc"
2388 wtv_demuxer_select="riffdec"
2389 wtv_muxer_select="riffenc"
2390 xmv_demuxer_select="riffdec"
2391 xwma_demuxer_select="riffdec"
2392
2393 # indevs / outdevs
2394 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2395 alsa_outdev_deps="alsa_asoundlib_h"
2396 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2397 avfoundation_indev_select="avfoundation"
2398 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2399 caca_outdev_deps="libcaca"
2400 decklink_outdev_deps="decklink pthreads"
2401 decklink_outdev_extralibs="-lstdc++"
2402 dshow_indev_deps="IBaseFilter"
2403 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2404 dv1394_indev_deps="dv1394"
2405 dv1394_indev_select="dv_demuxer"
2406 fbdev_indev_deps="linux_fb_h"
2407 fbdev_outdev_deps="linux_fb_h"
2408 gdigrab_indev_deps="CreateDIBSection"
2409 gdigrab_indev_extralibs="-lgdi32"
2410 gdigrab_indev_select="bmp_decoder"
2411 iec61883_indev_deps="libiec61883"
2412 jack_indev_deps="jack_jack_h sem_timedwait"
2413 lavfi_indev_deps="avfilter"
2414 libcdio_indev_deps="libcdio"
2415 libdc1394_indev_deps="libdc1394"
2416 libv4l2_indev_deps="libv4l2"
2417 openal_indev_deps="openal"
2418 opengl_outdev_deps="opengl"
2419 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2420 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2421 pulse_indev_deps="libpulse"
2422 pulse_outdev_deps="libpulse"
2423 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2424 qtkit_indev_select="qtkit"
2425 sdl_outdev_deps="sdl"
2426 sndio_indev_deps="sndio_h"
2427 sndio_outdev_deps="sndio_h"
2428 v4l_indev_deps="linux_videodev_h"
2429 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2430 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2431 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2432 vfwcap_indev_extralibs="-lavicap32"
2433 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2434 xv_outdev_extralibs="-lXv -lX11 -lXext"
2435 x11grab_indev_deps="x11grab"
2436
2437 # protocols
2438 bluray_protocol_deps="libbluray"
2439 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2440 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2441 ffrtmpcrypt_protocol_select="tcp_protocol"
2442 ffrtmphttp_protocol_deps="!librtmp_protocol"
2443 ffrtmphttp_protocol_select="http_protocol"
2444 ftp_protocol_select="tcp_protocol"
2445 gopher_protocol_select="network"
2446 http_protocol_select="tcp_protocol"
2447 httpproxy_protocol_select="tcp_protocol"
2448 https_protocol_select="tls_protocol"
2449 librtmp_protocol_deps="librtmp"
2450 librtmpe_protocol_deps="librtmp"
2451 librtmps_protocol_deps="librtmp"
2452 librtmpt_protocol_deps="librtmp"
2453 librtmpte_protocol_deps="librtmp"
2454 libssh_protocol_deps="libssh"
2455 mmsh_protocol_select="http_protocol"
2456 mmst_protocol_select="network"
2457 rtmp_protocol_deps="!librtmp_protocol"
2458 rtmp_protocol_select="tcp_protocol"
2459 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2460 rtmps_protocol_deps="!librtmp_protocol"
2461 rtmps_protocol_select="tls_protocol"
2462 rtmpt_protocol_select="ffrtmphttp_protocol"
2463 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2464 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2465 rtp_protocol_select="udp_protocol"
2466 sctp_protocol_deps="struct_sctp_event_subscribe"
2467 sctp_protocol_select="network"
2468 srtp_protocol_select="rtp_protocol"
2469 tcp_protocol_select="network"
2470 tls_protocol_deps_any="openssl gnutls"
2471 tls_protocol_select="tcp_protocol"
2472 udp_protocol_select="network"
2473 unix_protocol_deps="sys_un_h"
2474 unix_protocol_select="network"
2475
2476 # filters
2477 aconvert_filter_deps="swresample"
2478 amovie_filter_deps="avcodec avformat"
2479 aresample_filter_deps="swresample"
2480 ass_filter_deps="libass"
2481 asyncts_filter_deps="avresample"
2482 atempo_filter_deps="avcodec"
2483 atempo_filter_select="rdft"
2484 azmq_filter_deps="libzmq"
2485 blackframe_filter_deps="gpl"
2486 boxblur_filter_deps="gpl"
2487 bs2b_filter_deps="libbs2b"
2488 colormatrix_filter_deps="gpl"
2489 cropdetect_filter_deps="gpl"
2490 dctdnoiz_filter_deps="avcodec"
2491 dctdnoiz_filter_select="dct"
2492 delogo_filter_deps="gpl"
2493 deshake_filter_deps="avcodec"
2494 deshake_filter_select="dsputil"
2495 drawtext_filter_deps="libfreetype"
2496 ebur128_filter_deps="gpl"
2497 flite_filter_deps="libflite"
2498 frei0r_filter_deps="frei0r dlopen"
2499 frei0r_filter_extralibs='$ldl'
2500 frei0r_src_filter_deps="frei0r dlopen"
2501 frei0r_src_filter_extralibs='$ldl'
2502 geq_filter_deps="gpl"
2503 histeq_filter_deps="gpl"
2504 hqdn3d_filter_deps="gpl"
2505 interlace_filter_deps="gpl"
2506 kerndeint_filter_deps="gpl"
2507 ladspa_filter_deps="ladspa dlopen"
2508 ladspa_filter_extralibs='$ldl'
2509 mcdeint_filter_deps="avcodec gpl"
2510 movie_filter_deps="avcodec avformat"
2511 mp_filter_deps="gpl avcodec swscale inline_asm"
2512 mpdecimate_filter_deps="gpl avcodec"
2513 mptestsrc_filter_deps="gpl"
2514 negate_filter_deps="lut_filter"
2515 perspective_filter_deps="gpl"
2516 ocv_filter_deps="libopencv"
2517 owdenoise_filter_deps="gpl"
2518 pan_filter_deps="swresample"
2519 phase_filter_deps="gpl"
2520 pp_filter_deps="gpl postproc"
2521 pullup_filter_deps="gpl"
2522 removelogo_filter_deps="avcodec avformat swscale"
2523 resample_filter_deps="avresample"
2524 sab_filter_deps="gpl swscale"
2525 scale_filter_deps="swscale"
2526 smartblur_filter_deps="gpl swscale"
2527 showspectrum_filter_deps="avcodec"
2528 showspectrum_filter_select="rdft"
2529 spp_filter_deps="gpl avcodec"
2530 spp_filter_select="fft"
2531 stereo3d_filter_deps="gpl"
2532 subtitles_filter_deps="avformat avcodec libass"
2533 super2xsai_filter_deps="gpl"
2534 tinterlace_filter_deps="gpl"
2535 vidstabdetect_filter_deps="libvidstab"
2536 vidstabtransform_filter_deps="libvidstab"
2537 pixfmts_super2xsai_test_deps="super2xsai_filter"
2538 tinterlace_merge_test_deps="tinterlace_filter"
2539 tinterlace_pad_test_deps="tinterlace_filter"
2540 zmq_filter_deps="libzmq"
2541
2542 # examples
2543 avio_reading="avformat avcodec avutil"
2544 avcodec_example_deps="avcodec avutil"
2545 demuxing_decoding_example_deps="avcodec avformat avutil"
2546 filter_audio_example_deps="avfilter avutil"
2547 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2548 filtering_video_example_deps="avfilter avcodec avformat avutil"
2549 metadata_example_deps="avformat avutil"
2550 muxing_example_deps="avcodec avformat avutil swscale"
2551 remuxing_example_deps="avcodec avformat avutil"
2552 resampling_audio_example_deps="avutil swresample"
2553 scaling_video_example_deps="avutil swscale"
2554 transcode_aac_example_deps="avcodec avformat swresample"
2555 transcoding_example_deps="avfilter avcodec avformat avutil"
2556
2557 # libraries, in linking order
2558 avcodec_deps="avutil"
2559 avdevice_deps="avformat avcodec avutil"
2560 avfilter_deps="avutil"
2561 avformat_deps="avcodec avutil"
2562 avresample_deps="avutil"
2563 postproc_deps="avutil gpl"
2564 swresample_deps="avutil"
2565 swscale_deps="avutil"
2566
2567 # programs
2568 ffmpeg_deps="avcodec avfilter avformat swresample"
2569 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2570                null_filter
2571                setpts_filter trim_filter"
2572 ffplay_deps="avcodec avformat swscale swresample sdl"
2573 ffplay_libs='$sdl_libs'
2574 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2575 ffprobe_deps="avcodec avformat"
2576 ffserver_deps="avformat fork sarestart"
2577 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2578
2579 # documentation
2580 podpages_deps="perl"
2581 manpages_deps="perl pod2man"
2582 htmlpages_deps="perl texi2html"
2583 txtpages_deps="perl makeinfo"
2584 doc_deps_any="manpages htmlpages podpages txtpages"
2585
2586 # default parameters
2587
2588 logfile="config.log"
2589
2590 # installation paths
2591 prefix_default="/usr/local"
2592 bindir_default='${prefix}/bin'
2593 datadir_default='${prefix}/share/ffmpeg'
2594 docdir_default='${prefix}/share/doc/ffmpeg'
2595 incdir_default='${prefix}/include'
2596 libdir_default='${prefix}/lib'
2597 mandir_default='${prefix}/share/man'
2598 shlibdir_default="$libdir_default"
2599
2600 # toolchain
2601 ar_default="ar"
2602 cc_default="gcc"
2603 cxx_default="g++"
2604 host_cc_default="gcc"
2605 cp_f="cp -f"
2606 install="install"
2607 ln_s="ln -s -f"
2608 nm_default="nm -g"
2609 objformat="elf"
2610 pkg_config_default=pkg-config
2611 ranlib_default="ranlib"
2612 strip_default="strip"
2613 yasmexe_default="yasm"
2614 windres_default="windres"
2615
2616 nogas=":"
2617
2618 # OS
2619 target_os_default=$(tolower $(uname -s))
2620 host_os=$target_os_default
2621
2622 # machine
2623 if test "$target_os_default" = aix; then
2624     arch_default=$(uname -p)
2625 else
2626     arch_default=$(uname -m)
2627 fi
2628 cpu="generic"
2629
2630 # configurable options
2631 enable $PROGRAM_LIST
2632 enable $DOCUMENT_LIST
2633 enable $EXAMPLE_LIST
2634 enable $(filter_out avresample $LIBRARY_LIST)
2635 enable stripping
2636
2637 enable asm
2638 enable debug
2639 enable doc
2640 enable optimizations
2641 enable runtime_cpudetect
2642 enable safe_bitstream_reader
2643 enable static
2644 enable swscale_alpha
2645
2646 # Enable hwaccels by default.
2647 enable dxva2 vaapi vda vdpau xvmc
2648 enable xlib
2649
2650 # build settings
2651 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2652 LIBPREF="lib"
2653 LIBSUF=".a"
2654 FULLNAME='$(NAME)$(BUILDSUF)'
2655 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2656 SLIBPREF="lib"
2657 SLIBSUF=".so"
2658 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2659 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2660 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2661 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2662 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2663 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2664
2665 asflags_filter=echo
2666 cflags_filter=echo
2667 ldflags_filter=echo
2668
2669 AS_C='-c'
2670 AS_O='-o $@'
2671 CC_C='-c'
2672 CC_E='-E -o $@'
2673 CC_O='-o $@'
2674 CXX_C='-c'
2675 CXX_O='-o $@'
2676 LD_O='-o $@'
2677 LD_LIB='-l%'
2678 LD_PATH='-L'
2679 HOSTCC_C='-c'
2680 HOSTCC_E='-E -o $@'
2681 HOSTCC_O='-o $@'
2682 HOSTLD_O='-o $@'
2683
2684 host_libs='-lm'
2685 host_cflags_filter=echo
2686 host_ldflags_filter=echo
2687
2688 target_path='$(CURDIR)'
2689
2690 # since the object filename is not given with the -MM flag, the compiler
2691 # is only able to print the basename, and we must add the path ourselves
2692 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2693 DEPFLAGS='-MM'
2694
2695 # find source path
2696 if test -f configure; then
2697     source_path=.
2698 else
2699     source_path=$(cd $(dirname "$0"); pwd)
2700     echo "$source_path" | grep -q '[[:blank:]]' &&
2701         die "Out of tree builds are impossible with whitespace in source path."
2702     test -e "$source_path/config.h" &&
2703         die "Out of tree builds are impossible with config.h in source dir."
2704 fi
2705
2706 for v in "$@"; do
2707     r=${v#*=}
2708     l=${v%"$r"}
2709     r=$(sh_quote "$r")
2710     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2711 done
2712
2713 find_things(){
2714     thing=$1
2715     pattern=$2
2716     file=$source_path/$3
2717     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2718 }
2719
2720 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2721 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2722 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2723 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2724 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2725 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2726 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2727 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2728 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2729 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2730 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2731
2732 ALL_COMPONENTS="
2733     $BSF_LIST
2734     $DECODER_LIST
2735     $DEMUXER_LIST
2736     $ENCODER_LIST
2737     $FILTER_LIST
2738     $HWACCEL_LIST
2739     $INDEV_LIST
2740     $MUXER_LIST
2741     $OUTDEV_LIST
2742     $PARSER_LIST
2743     $PROTOCOL_LIST
2744 "
2745
2746 for n in $COMPONENT_LIST; do
2747     v=$(toupper ${n%s})_LIST
2748     eval enable \$$v
2749     eval ${n}_if_any="\$$v"
2750 done
2751
2752 enable $ARCH_EXT_LIST
2753
2754 die_unknown(){
2755     echo "Unknown option \"$1\"."
2756     echo "See $0 --help for available options."
2757     exit 1
2758 }
2759
2760 print_3_columns() {
2761     cat | tr ' ' '\n' | sort | pr -r -3 -t
2762 }
2763
2764 show_list() {
2765     suffix=_$1
2766     shift
2767     echo $* | sed s/$suffix//g | print_3_columns
2768     exit 0
2769 }
2770
2771 rand_list(){
2772     IFS=', '
2773     set -- $*
2774     unset IFS
2775     for thing; do
2776         comp=${thing%:*}
2777         prob=${thing#$comp}
2778         prob=${prob#:}
2779         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2780         echo "prob ${prob:-0.5}"
2781         printf '%s\n' $comp
2782     done
2783 }
2784
2785 do_random(){
2786     action=$1
2787     shift
2788     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2789     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2790 }
2791
2792 for opt do
2793     optval="${opt#*=}"
2794     case "$opt" in
2795         --extra-ldflags=*)
2796             add_ldflags $optval
2797         ;;
2798         --extra-libs=*)
2799             add_extralibs $optval
2800         ;;
2801         --disable-devices)
2802             disable $INDEV_LIST $OUTDEV_LIST
2803         ;;
2804         --enable-debug=*)
2805             debuglevel="$optval"
2806         ;;
2807         --disable-programs)
2808             disable $PROGRAM_LIST
2809         ;;
2810         --disable-everything)
2811             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2812         ;;
2813         --disable-all)
2814             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2815             disable $LIBRARY_LIST $PROGRAM_LIST doc
2816         ;;
2817         --enable-random|--disable-random)
2818             action=${opt%%-random}
2819             do_random ${action#--} $COMPONENT_LIST
2820         ;;
2821         --enable-random=*|--disable-random=*)
2822             action=${opt%%-random=*}
2823             do_random ${action#--} $optval
2824         ;;
2825         --enable-*=*|--disable-*=*)
2826             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2827             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2828             eval list=\$$(toupper $thing)_LIST
2829             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2830             list=$(filter "$name" $list)
2831             [ "$list" = "" ] && warn "Option $opt did not match anything"
2832             $action $list
2833         ;;
2834         --enable-?*|--disable-?*)
2835             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2836             if is_in $option $COMPONENT_LIST; then
2837                 test $action = disable && action=unset
2838                 eval $action \$$(toupper ${option%s})_LIST
2839             elif is_in $option $CMDLINE_SELECT; then
2840                 $action $option
2841             else
2842                 die_unknown $opt
2843             fi
2844         ;;
2845         --list-*)
2846             NAME="${opt#--list-}"
2847             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2848             NAME=${NAME%s}
2849             eval show_list $NAME \$$(toupper $NAME)_LIST
2850         ;;
2851         --help|-h) show_help
2852         ;;
2853         --fatal-warnings) enable fatal_warnings
2854         ;;
2855         *)
2856             optname="${opt%%=*}"
2857             optname="${optname#--}"
2858             optname=$(echo "$optname" | sed 's/-/_/g')
2859             if is_in $optname $CMDLINE_SET; then
2860                 eval $optname='$optval'
2861             elif is_in $optname $CMDLINE_APPEND; then
2862                 append $optname "$optval"
2863             else
2864                 die_unknown $opt
2865             fi
2866         ;;
2867     esac
2868 done
2869
2870 disabled logging && logfile=/dev/null
2871
2872 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2873 set >> $logfile
2874
2875 test -n "$cross_prefix" && enable cross_compile
2876
2877 if enabled cross_compile; then
2878     test -n "$arch" && test -n "$target_os" ||
2879         die "Must specify target arch and OS when cross-compiling"
2880 fi
2881
2882 ar_default="${cross_prefix}${ar_default}"
2883 cc_default="${cross_prefix}${cc_default}"
2884 cxx_default="${cross_prefix}${cxx_default}"
2885 nm_default="${cross_prefix}${nm_default}"
2886 pkg_config_default="${cross_prefix}${pkg_config_default}"
2887 ranlib_default="${cross_prefix}${ranlib_default}"
2888 strip_default="${cross_prefix}${strip_default}"
2889 windres_default="${cross_prefix}${windres_default}"
2890
2891 sysinclude_default="${sysroot}/usr/include"
2892
2893 test -n "$valgrind" && toolchain="valgrind-memcheck"
2894
2895 case "$toolchain" in
2896     clang-asan)
2897         cc_default="clang"
2898         add_cflags  -fsanitize=address
2899         add_ldflags -fsanitize=address
2900     ;;
2901     clang-tsan)
2902         cc_default="clang"
2903         add_cflags  -fsanitize=thread -pie
2904         add_ldflags -fsanitize=thread -pie
2905     ;;
2906     clang-usan)
2907         cc_default="clang"
2908         add_cflags  -fsanitize=undefined
2909         add_ldflags -fsanitize=undefined
2910     ;;
2911     gcc-asan)
2912         cc_default="gcc"
2913         add_cflags  -fsanitize=address
2914         add_ldflags -fsanitize=address
2915     ;;
2916     gcc-tsan)
2917         cc_default="gcc"
2918         add_cflags  -fsanitize=thread -pie -fPIC
2919         add_ldflags -fsanitize=thread -pie -fPIC
2920     ;;
2921     gcc-usan)
2922         cc_default="gcc"
2923         add_cflags  -fsanitize=undefined
2924         add_ldflags -fsanitize=undefined
2925     ;;
2926     valgrind-massif)
2927         target_exec_default=${valgrind:-"valgrind"}
2928         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"
2929     ;;
2930     valgrind-memcheck)
2931         target_exec_default=${valgrind:-"valgrind"}
2932         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2933     ;;
2934     msvc)
2935         # Check whether the current MSVC version needs the C99 converter.
2936         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2937         # support enough of C99 to build ffmpeg. Default to the new
2938         # behaviour if the regexp was unable to match anything, since this
2939         # successfully parses the version number of existing supported
2940         # versions that require the converter (MSVC 2010 and 2012).
2941         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2942         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2943             cc_default="cl"
2944         else
2945             cc_default="c99wrap cl"
2946         fi
2947         ld_default="link"
2948         nm_default="dumpbin -symbols"
2949         ar_default="lib"
2950         target_os_default="win32"
2951         # Use a relative path for TMPDIR. This makes sure all the
2952         # ffconf temp files are written with a relative path, avoiding
2953         # issues with msys/win32 path conversion for MSVC parameters
2954         # such as -Fo<file> or -out:<file>.
2955         TMPDIR=.
2956     ;;
2957     icl)
2958         cc_default="icl"
2959         ld_default="xilink"
2960         nm_default="dumpbin -symbols"
2961         ar_default="xilib"
2962         target_os_default="win32"
2963         TMPDIR=.
2964     ;;
2965     gcov)
2966         add_cflags  -fprofile-arcs -ftest-coverage
2967         add_ldflags -fprofile-arcs -ftest-coverage
2968     ;;
2969     hardened)
2970         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2971         add_ldflags -Wl,-z,relro -Wl,-z,now
2972     ;;
2973     ?*)
2974         die "Unknown toolchain $toolchain"
2975     ;;
2976 esac
2977
2978 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2979 enabled cross_compile || host_cc_default=$cc
2980 set_default host_cc
2981
2982 if ! $pkg_config --version >/dev/null 2>&1; then
2983     warn "$pkg_config not found, library detection may fail."
2984     pkg_config=false
2985 fi
2986
2987 exesuf() {
2988     case $1 in
2989         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2990     esac
2991 }
2992
2993 EXESUF=$(exesuf $target_os)
2994 HOSTEXESUF=$(exesuf $host_os)
2995
2996 # set temporary file name
2997 : ${TMPDIR:=$TEMPDIR}
2998 : ${TMPDIR:=$TMP}
2999 : ${TMPDIR:=/tmp}
3000
3001 if [ -n "$tempprefix" ] ; then
3002     mktemp(){
3003         echo $tempprefix.${HOSTNAME}.${UID}
3004     }
3005 elif ! check_cmd mktemp -u XXXXXX; then
3006     # simple replacement for missing mktemp
3007     # NOT SAFE FOR GENERAL USE
3008     mktemp(){
3009         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3010     }
3011 fi
3012
3013 tmpfile(){
3014     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3015         (set -C; exec > $tmp) 2>/dev/null ||
3016         die "Unable to create temporary file in $TMPDIR."
3017     append TMPFILES $tmp
3018     eval $1=$tmp
3019 }
3020
3021 trap 'rm -f -- $TMPFILES' EXIT
3022
3023 tmpfile TMPASM .asm
3024 tmpfile TMPC   .c
3025 tmpfile TMPCPP .cpp
3026 tmpfile TMPE   $EXESUF
3027 tmpfile TMPH   .h
3028 tmpfile TMPM   .m
3029 tmpfile TMPO   .o
3030 tmpfile TMPS   .S
3031 tmpfile TMPSH  .sh
3032 tmpfile TMPV   .ver
3033
3034 unset -f mktemp
3035
3036 chmod +x $TMPE
3037
3038 # make sure we can execute files in $TMPDIR
3039 cat > $TMPSH 2>> $logfile <<EOF
3040 #! /bin/sh
3041 EOF
3042 chmod +x $TMPSH >> $logfile 2>&1
3043 if ! $TMPSH >> $logfile 2>&1; then
3044     cat <<EOF
3045 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3046 variable to another directory and make sure that it is not mounted noexec.
3047 EOF
3048     die "Sanity test failed."
3049 fi
3050
3051 ccc_flags(){
3052     for flag; do
3053         case $flag in
3054             -std=c99)           echo -c99                       ;;
3055             -mcpu=*)            echo -arch ${flag#*=}           ;;
3056             -mieee)             echo -ieee                      ;;
3057             -O*|-fast)          echo $flag                      ;;
3058             -fno-math-errno)    echo -assume nomath_errno       ;;
3059             -g)                 echo -g3                        ;;
3060             -Wall)              echo -msg_enable level2         ;;
3061             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3062             -Wl,*)              echo $flag                      ;;
3063             -f*|-W*)                                            ;;
3064             *)                  echo $flag                      ;;
3065         esac
3066    done
3067 }
3068
3069 cparser_flags(){
3070     for flag; do
3071         case $flag in
3072             -Wno-switch)             echo -Wno-switch-enum ;;
3073             -Wno-format-zero-length) ;;
3074             -Wdisabled-optimization) ;;
3075             -Wno-pointer-sign)       echo -Wno-other ;;
3076             *)                       echo $flag ;;
3077         esac
3078     done
3079 }
3080
3081 msvc_common_flags(){
3082     for flag; do
3083         case $flag in
3084             # In addition to specifying certain flags under the compiler
3085             # specific filters, they must be specified here as well or else the
3086             # generic catch all at the bottom will print the original flag.
3087             -Wall)                ;;
3088             -std=c99)             ;;
3089             # Common flags
3090             -fomit-frame-pointer) ;;
3091             -g)                   echo -Z7 ;;
3092             -fno-math-errno)      ;;
3093             -fno-common)          ;;
3094             -fno-signed-zeros)    ;;
3095             -fPIC)                ;;
3096             -mthumb)              ;;
3097             -march=*)             ;;
3098             -lz)                  echo zlib.lib ;;
3099             -lavifil32)           echo vfw32.lib ;;
3100             -lavicap32)           echo vfw32.lib user32.lib ;;
3101             -l*)                  echo ${flag#-l}.lib ;;
3102             *)                    echo $flag ;;
3103         esac
3104     done
3105 }
3106
3107 msvc_flags(){
3108     msvc_common_flags "$@"
3109     for flag; do
3110         case $flag in
3111             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3112                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3113                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3114                                        -wd4554 \
3115                                        -wd4273 ;;
3116         esac
3117     done
3118 }
3119
3120 icl_flags(){
3121     msvc_common_flags "$@"
3122     for flag; do
3123         case $flag in
3124             # Despite what Intel's documentation says -Wall, which is supported
3125             # on Windows, does enable remarks so disable them here.
3126             -Wall)                echo $flag -Qdiag-disable:remark ;;
3127             -std=c99)             echo -Qstd=c99 ;;
3128         esac
3129     done
3130 }
3131
3132 icc_flags(){
3133     for flag; do
3134         case $flag in
3135             -flto)                echo -ipo ;;
3136             *)                    echo $flag ;;
3137         esac
3138     done
3139 }
3140
3141 pgi_flags(){
3142     for flag; do
3143         case $flag in
3144             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3145             -fomit-frame-pointer) echo -Mnoframe ;;
3146             -g)                   echo -gopt ;;
3147             *)                    echo $flag ;;
3148         esac
3149     done
3150 }
3151
3152 suncc_flags(){
3153     for flag; do
3154         case $flag in
3155             -march=*|-mcpu=*)
3156                 case "${flag#*=}" in
3157                     native)                   echo -xtarget=native       ;;
3158                     v9|niagara)               echo -xarch=sparc          ;;
3159                     ultrasparc)               echo -xarch=sparcvis       ;;
3160                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3161                     i586|pentium)             echo -xchip=pentium        ;;
3162                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3163                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3164                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3165                     pentium4*)          echo -xtarget=pentium4           ;;
3166                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3167                     *-sse3)             echo -xarch=sse3                 ;;
3168                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3169                     bonnell)                   echo -xarch=ssse3         ;;
3170                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3171                     westmere)                  echo -xtarget=westmere    ;;
3172                     silvermont)                echo -xarch=sse4_2        ;;
3173                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3174                     core-avx*|ivybridge|haswell|broadwell)
3175                                                echo -xarch=avx           ;;
3176                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3177                     btver1)                    echo -xarch=amdsse4a      ;;
3178                     btver2|bdver*)             echo -xarch=avx           ;;
3179                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3180                     k8|opteron|athlon64|athlon-fx)
3181                                                echo -xarch=sse2a         ;;
3182                     athlon*)                   echo -xarch=pentium_proa  ;;
3183                 esac
3184                 ;;
3185             -std=c99)             echo -xc99              ;;
3186             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3187             -fPIC)                echo -KPIC -xcode=pic32 ;;
3188             -W*,*)                echo $flag              ;;
3189             -f*-*|-W*|-mimpure-text)                      ;;
3190             -shared)              echo -G                 ;;
3191             *)                    echo $flag              ;;
3192         esac
3193     done
3194 }
3195
3196 tms470_flags(){
3197     for flag; do
3198         case $flag in
3199             -march=*|-mcpu=*)
3200                 case "${flag#*=}" in
3201                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3202                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3203                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3204                     armv6*|arm11*)          echo -mv=6   ;;
3205                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3206                                             echo -mv=5e  ;;
3207                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3208                 esac
3209                 ;;
3210             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3211             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3212             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3213             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3214             -msoft-float)   echo --float_support=vfplib       ;;
3215             -O[0-3]|-mf=*)  echo $flag                        ;;
3216             -g)             echo -g -mn                       ;;
3217             -pds=*)         echo $flag                        ;;
3218             -D*|-I*)        echo $flag                        ;;
3219             --gcc|--abi=*)  echo $flag                        ;;
3220             -me)            echo $flag                        ;;
3221         esac
3222     done
3223 }
3224
3225 probe_cc(){
3226     pfx=$1
3227     _cc=$2
3228
3229     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3230     unset _ld_o _ldflags _ld_lib _ld_path
3231     unset _depflags _DEPCMD _DEPFLAGS
3232     _flags_filter=echo
3233
3234     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3235         true # no-op to avoid reading stdin in following checks
3236     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3237         _type=llvm_gcc
3238         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3239         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3241         _cflags_speed='-O3'
3242         _cflags_size='-Os'
3243     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3244         _type=gcc
3245         gcc_version=$($_cc --version | head -n1)
3246         gcc_basever=$($_cc -dumpversion)
3247         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3248         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3249         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3250         if ! $_cc -dumpversion | grep -q '^2\.'; then
3251             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3252         fi
3253         _cflags_speed='-O3'
3254         _cflags_size='-Os'
3255     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3256         _type=icc
3257         _ident=$($_cc --version | head -n1)
3258         _depflags='-MMD'
3259         _cflags_speed='-O3'
3260         _cflags_size='-Os'
3261         _cflags_noopt='-O1'
3262         _flags_filter=icc_flags
3263     elif $_cc -v 2>&1 | grep -q xlc; then
3264         _type=xlc
3265         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3266         _cflags_speed='-O5'
3267         _cflags_size='-O5 -qcompact'
3268     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3269         _type=ccc
3270         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3271         _DEPFLAGS='-M'
3272         _cflags_speed='-fast'
3273         _cflags_size='-O1'
3274         _flags_filter=ccc_flags
3275     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3276         test -d "$sysroot" || die "No valid sysroot specified."
3277         _type=armcc
3278         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3279         armcc_conf="$PWD/armcc.conf"
3280         $_cc --arm_linux_configure                 \
3281              --arm_linux_config_file="$armcc_conf" \
3282              --configure_sysroot="$sysroot"        \
3283              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3284              die "Error creating armcc configuration file."
3285         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3286         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3287         as_default="${cross_prefix}gcc"
3288         _depflags='-MMD'
3289         _cflags_speed='-O3'
3290         _cflags_size='-Os'
3291     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3292         _type=tms470
3293         _ident=$($_cc -version | head -n1 | tr -s ' ')
3294         _flags='--gcc --abi=eabi -me'
3295         _cc_e='-ppl -fe=$@'
3296         _cc_o='-fe=$@'
3297         _depflags='-ppa -ppd=$(@:.o=.d)'
3298         _cflags_speed='-O3 -mf=5'
3299         _cflags_size='-O3 -mf=2'
3300         _flags_filter=tms470_flags
3301     elif $_cc -v 2>&1 | grep -q clang; then
3302         _type=clang
3303         _ident=$($_cc --version | head -n1)
3304         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307     elif $_cc -V 2>&1 | grep -q Sun; then
3308         _type=suncc
3309         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3310         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3311         _DEPFLAGS='-xM1 -xc99'
3312         _ldflags='-std=c99'
3313         _cflags_speed='-O5'
3314         _cflags_size='-O5 -xspace'
3315         _flags_filter=suncc_flags
3316     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3317         _type=pathscale
3318         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3319         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3320         _cflags_speed='-O2'
3321         _cflags_size='-Os'
3322         _flags_filter='filter_out -Wdisabled-optimization'
3323     elif $_cc -v 2>&1 | grep -q Open64; then
3324         _type=open64
3325         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3326         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3327         _cflags_speed='-O2'
3328         _cflags_size='-Os'
3329         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3330     elif $_cc -V 2>&1 | grep -q Portland; then
3331         _type=pgi
3332         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3333         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3334         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3335         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3336         _cflags_noopt="-O"
3337         _flags_filter=pgi_flags
3338     elif $_cc 2>&1 | grep -q Microsoft; then
3339         _type=msvc
3340         _ident=$($cc 2>&1 | head -n1)
3341         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3342         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3343         _cflags_speed="-O2"
3344         _cflags_size="-O1"
3345         if $_cc 2>&1 | grep -q Linker; then
3346             _ld_o='-out:$@'
3347         else
3348             _ld_o='-Fe$@'
3349         fi
3350         _cc_o='-Fo$@'
3351         _cc_e='-P -Fi$@'
3352         _flags_filter=msvc_flags
3353         _ld_lib='lib%.a'
3354         _ld_path='-libpath:'
3355         _flags='-nologo'
3356         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3357         if [ $pfx = hostcc ]; then
3358             append _cflags -Dsnprintf=_snprintf
3359         fi
3360         disable stripping
3361     elif $_cc 2>&1 | grep -q Intel; then
3362         _type=icl
3363         _ident=$($cc 2>&1 | head -n1)
3364         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3365         # Not only is O3 broken on 13.x+ but it is slower on all previous
3366         # versions (tested) as well.
3367         _cflags_speed="-O2"
3368         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3369         if $_cc 2>&1 | grep -q Linker; then
3370             _ld_o='-out:$@'
3371         else
3372             _ld_o='-Fe$@'
3373         fi
3374         _cc_o='-Fo$@'
3375         _cc_e='-P'
3376         _flags_filter=icl_flags
3377         _ld_lib='lib%.a'
3378         _ld_path='-libpath:'
3379         # -Qdiag-error to make icl error when seeing certain unknown arguments
3380         _flags='-nologo -Qdiag-error:4044,10157'
3381         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3382         # with MSVC which enables it by default.
3383         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3384         if [ $pfx = hostcc ]; then
3385             append _cflags -Dsnprintf=_snprintf
3386         fi
3387     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3388         _type=cparser
3389         _ident=$($_cc --version | head -n1)
3390         _depflags='-MMD'
3391         _cflags_speed='-O4'
3392         _cflags_size='-O2'
3393         _flags_filter=cparser_flags
3394     fi
3395
3396     eval ${pfx}_type=\$_type
3397     eval ${pfx}_ident=\$_ident
3398 }
3399
3400 set_ccvars(){
3401     eval ${1}_C=\${_cc_c-\${${1}_C}}
3402     eval ${1}_E=\${_cc_e-\${${1}_E}}
3403     eval ${1}_O=\${_cc_o-\${${1}_O}}
3404
3405     if [ -n "$_depflags" ]; then
3406         eval ${1}_DEPFLAGS=\$_depflags
3407     else
3408         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3409         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3410         eval DEP${1}FLAGS=\$_flags
3411     fi
3412 }
3413
3414 probe_cc cc "$cc"
3415 cflags_filter=$_flags_filter
3416 cflags_speed=$_cflags_speed
3417 cflags_size=$_cflags_size
3418 cflags_noopt=$_cflags_noopt
3419 add_cflags $_flags $_cflags
3420 cc_ldflags=$_ldflags
3421 set_ccvars CC
3422
3423 probe_cc hostcc "$host_cc"
3424 host_cflags_filter=$_flags_filter
3425 add_host_cflags  $_flags $_cflags
3426 set_ccvars HOSTCC
3427
3428 test -n "$cc_type" && enable $cc_type ||
3429     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3430
3431 : ${as_default:=$cc}
3432 : ${dep_cc_default:=$cc}
3433 : ${ld_default:=$cc}
3434 : ${host_ld_default:=$host_cc}
3435 set_default ar as dep_cc ld host_ld windres
3436
3437 probe_cc as "$as"
3438 asflags_filter=$_flags_filter
3439 add_asflags $_flags $_cflags
3440 set_ccvars AS
3441
3442 probe_cc ld "$ld"
3443 ldflags_filter=$_flags_filter
3444 add_ldflags $_flags $_ldflags
3445 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3446 LD_O=${_ld_o-$LD_O}
3447 LD_LIB=${_ld_lib-$LD_LIB}
3448 LD_PATH=${_ld_path-$LD_PATH}
3449
3450 probe_cc hostld "$host_ld"
3451 host_ldflags_filter=$_flags_filter
3452 add_host_ldflags $_flags $_ldflags
3453 HOSTLD_O=${_ld_o-$HOSTLD_O}
3454
3455 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3456     probe_cc depcc "$dep_cc"
3457     CCDEP=${_DEPCMD:-$DEPCMD}
3458     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3459     DEPCCFLAGS=$_flags
3460 fi
3461
3462 if $ar 2>&1 | grep -q Microsoft; then
3463     arflags="-nologo"
3464     ar_o='-out:$@'
3465 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3466     arflags="rq"
3467     ar_o='$@'
3468 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3469     arflags='-Xany -r -c'
3470     ar_o='$@'
3471 else
3472     arflags="rc"
3473     ar_o='$@'
3474 fi
3475
3476 add_cflags $extra_cflags
3477 add_cxxflags $extra_cxxflags
3478 add_asflags $extra_cflags
3479
3480 if test -n "$sysroot"; then
3481     case "$cc_type" in
3482         gcc|llvm_gcc|clang)
3483             add_cppflags --sysroot="$sysroot"
3484             add_ldflags --sysroot="$sysroot"
3485 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3486             add_cppflags -isysroot "$sysroot"
3487             add_ldflags -isysroot "$sysroot"
3488         ;;
3489         tms470)
3490             add_cppflags -I"$sysinclude"
3491             add_ldflags  --sysroot="$sysroot"
3492         ;;
3493     esac
3494 fi
3495
3496 if test "$cpu" = host; then
3497     enabled cross_compile &&
3498         die "--cpu=host makes no sense when cross-compiling."
3499
3500     case "$cc_type" in
3501         gcc|llvm_gcc)
3502             check_native(){
3503                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3504                 sed -n "/cc1.*$1=/{
3505                             s/.*$1=\\([^ ]*\\).*/\\1/
3506                             p
3507                             q
3508                         }" $TMPE
3509             }
3510             cpu=$(check_native -march || check_native -mcpu)
3511         ;;
3512     esac
3513
3514     test "${cpu:-host}" = host &&
3515         die "--cpu=host not supported with compiler $cc"
3516 fi
3517
3518 # Deal with common $arch aliases
3519 case "$arch" in
3520     aarch64|arm64)
3521         arch="aarch64"
3522     ;;
3523     arm*|iPad*|iPhone*)
3524         arch="arm"
3525     ;;
3526     mips*|IP*)
3527         arch="mips"
3528     ;;
3529     parisc*|hppa*)
3530         arch="parisc"
3531     ;;
3532     "Power Macintosh"|ppc*|powerpc*)
3533         arch="ppc"
3534     ;;
3535     s390|s390x)
3536         arch="s390"
3537     ;;
3538     sh4|sh)
3539         arch="sh4"
3540     ;;
3541     sun4u|sparc*)
3542         arch="sparc"
3543     ;;
3544     tilegx|tile-gx)
3545         arch="tilegx"
3546     ;;
3547     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3548         arch="x86"
3549     ;;
3550 esac
3551
3552 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3553 enable $arch
3554
3555 # Add processor-specific flags
3556 if enabled aarch64; then
3557
3558     case $cpu in
3559         armv*)
3560             cpuflags="-march=$cpu"
3561         ;;
3562         *)
3563             cpuflags="-mcpu=$cpu"
3564         ;;
3565     esac
3566
3567 elif enabled alpha; then
3568
3569     cpuflags="-mcpu=$cpu"
3570
3571 elif enabled arm; then
3572
3573     check_arm_arch() {
3574         check_cpp_condition stddef.h \
3575             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3576             $cpuflags
3577     }
3578
3579     probe_arm_arch() {
3580         if   check_arm_arch 4;        then echo armv4;
3581         elif check_arm_arch 4T;       then echo armv4t;
3582         elif check_arm_arch 5;        then echo armv5;
3583         elif check_arm_arch 5E;       then echo armv5e;
3584         elif check_arm_arch 5T;       then echo armv5t;
3585         elif check_arm_arch 5TE;      then echo armv5te;
3586         elif check_arm_arch 5TEJ;     then echo armv5te;
3587         elif check_arm_arch 6;        then echo armv6;
3588         elif check_arm_arch 6J;       then echo armv6j;
3589         elif check_arm_arch 6K;       then echo armv6k;
3590         elif check_arm_arch 6Z;       then echo armv6z;
3591         elif check_arm_arch 6ZK;      then echo armv6zk;
3592         elif check_arm_arch 6T2;      then echo armv6t2;
3593         elif check_arm_arch 7;        then echo armv7;
3594         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3595         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3596         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3597         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3598         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3599         fi
3600     }
3601
3602     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3603
3604     case $cpu in
3605         armv*)
3606             cpuflags="-march=$cpu"
3607             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3608         ;;
3609         *)
3610             cpuflags="-mcpu=$cpu"
3611             case $cpu in
3612                 cortex-a*)                               subarch=armv7a  ;;
3613                 cortex-r*)                               subarch=armv7r  ;;
3614                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3615                 arm11*)                                  subarch=armv6   ;;
3616                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3617                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3618                 *)                             subarch=$(probe_arm_arch) ;;
3619             esac
3620         ;;
3621     esac
3622
3623     case "$subarch" in
3624         armv5t*)    enable fast_clz                ;;
3625         armv[6-8]*)
3626             enable fast_clz
3627             disabled fast_unaligned || enable fast_unaligned
3628             ;;
3629     esac
3630
3631 elif enabled avr32; then
3632
3633     case $cpu in
3634         ap7[02]0[0-2])
3635             subarch="avr32_ap"
3636             cpuflags="-mpart=$cpu"
3637         ;;
3638         ap)
3639             subarch="avr32_ap"
3640             cpuflags="-march=$cpu"
3641         ;;
3642         uc3[ab]*)
3643             subarch="avr32_uc"
3644             cpuflags="-mcpu=$cpu"
3645         ;;
3646         uc)
3647             subarch="avr32_uc"
3648             cpuflags="-march=$cpu"
3649         ;;
3650     esac
3651
3652 elif enabled bfin; then
3653
3654     cpuflags="-mcpu=$cpu"
3655
3656 elif enabled mips; then
3657
3658     cpuflags="-march=$cpu"
3659
3660     case $cpu in
3661         24kc)
3662             disable mipsfpu
3663             disable mipsdspr1
3664             disable mipsdspr2
3665         ;;
3666         24kf*)
3667             disable mipsdspr1
3668             disable mipsdspr2
3669         ;;
3670         24kec|34kc|1004kc)
3671             disable mipsfpu
3672             disable mipsdspr2
3673         ;;
3674         24kef*|34kf*|1004kf*)
3675             disable mipsdspr2
3676         ;;
3677         74kc)
3678             disable mipsfpu
3679         ;;
3680     esac
3681
3682 elif enabled ppc; then
3683
3684     disable ldbrx
3685
3686     case $(tolower $cpu) in
3687         601|ppc601|powerpc601)
3688             cpuflags="-mcpu=601"
3689             disable altivec
3690         ;;
3691         603*|ppc603*|powerpc603*)
3692             cpuflags="-mcpu=603"
3693             disable altivec
3694         ;;
3695         604*|ppc604*|powerpc604*)
3696             cpuflags="-mcpu=604"
3697             disable altivec
3698         ;;
3699         g3|75*|ppc75*|powerpc75*)
3700             cpuflags="-mcpu=750"
3701             disable altivec
3702         ;;
3703         g4|745*|ppc745*|powerpc745*)
3704             cpuflags="-mcpu=7450"
3705         ;;
3706         74*|ppc74*|powerpc74*)
3707             cpuflags="-mcpu=7400"
3708         ;;
3709         g5|970|ppc970|powerpc970)
3710             cpuflags="-mcpu=970"
3711         ;;
3712         power[3-7]*)
3713             cpuflags="-mcpu=$cpu"
3714         ;;
3715         cell)
3716             cpuflags="-mcpu=cell"
3717             enable ldbrx
3718         ;;
3719         e500mc)
3720             cpuflags="-mcpu=e500mc"
3721             disable altivec
3722         ;;
3723         e500v2)
3724             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3725             disable altivec
3726             disable dcbzl
3727         ;;
3728         e500)
3729             cpuflags="-mcpu=8540 -mhard-float"
3730             disable altivec
3731             disable dcbzl
3732         ;;
3733     esac
3734
3735 elif enabled sparc; then
3736
3737     case $cpu in
3738         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3739             cpuflags="-mcpu=$cpu"
3740         ;;
3741         ultrasparc*|niagara[234])
3742             cpuflags="-mcpu=$cpu"
3743         ;;
3744     esac
3745
3746 elif enabled x86; then
3747
3748     case $cpu in
3749         i[345]86|pentium)
3750             cpuflags="-march=$cpu"
3751             disable mmx
3752         ;;
3753         # targets that do NOT support nopl and conditional mov (cmov)
3754         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3755             cpuflags="-march=$cpu"
3756             disable i686
3757         ;;
3758         # targets that do support nopl and conditional mov (cmov)
3759         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3760         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3761             cpuflags="-march=$cpu"
3762             enable i686
3763             enable fast_cmov
3764         ;;
3765         # targets that do support conditional mov but on which it's slow
3766         pentium4|pentium4m|prescott|nocona)
3767             cpuflags="-march=$cpu"
3768             enable i686
3769             disable fast_cmov
3770         ;;
3771     esac
3772
3773 fi
3774
3775 if [ "$cpu" != generic ]; then
3776     add_cflags  $cpuflags
3777     add_asflags $cpuflags
3778 fi
3779
3780 # compiler sanity check
3781 check_exec <<EOF
3782 int main(void){ return 0; }
3783 EOF
3784 if test "$?" != 0; then
3785     echo "$cc is unable to create an executable file."
3786     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3787         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3788         echo "Only do this if you know what cross compiling means."
3789     fi
3790     die "C compiler test failed."
3791 fi
3792
3793 add_cppflags -D_ISOC99_SOURCE
3794 add_cxxflags -D__STDC_CONSTANT_MACROS
3795 check_cflags -std=c99
3796 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3797 #include <stdlib.h>
3798 EOF
3799 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3800 #include <stdlib.h>
3801 EOF
3802
3803 add_host_cppflags -D_ISOC99_SOURCE
3804 check_host_cflags -std=c99
3805 check_host_cflags -Wall
3806 check_host_cflags -O3
3807
3808 check_64bit(){
3809     arch32=$1
3810     arch64=$2
3811     expr=$3
3812     check_code cc "" "int test[2*($expr) - 1]" &&
3813         subarch=$arch64 || subarch=$arch32
3814 }
3815
3816 case "$arch" in
3817     aarch64|alpha|ia64)
3818         spic=$shared
3819     ;;
3820     mips)
3821         check_64bit mips mips64 '_MIPS_SIM > 1'
3822         spic=$shared
3823     ;;
3824     parisc)
3825         check_64bit parisc parisc64 'sizeof(void *) > 4'
3826         spic=$shared
3827     ;;
3828     ppc)
3829         check_64bit ppc ppc64 'sizeof(void *) > 4'
3830         spic=$shared
3831     ;;
3832     s390)
3833         check_64bit s390 s390x 'sizeof(void *) > 4'
3834         spic=$shared
3835     ;;
3836     sparc)
3837         check_64bit sparc sparc64 'sizeof(void *) > 4'
3838         spic=$shared
3839     ;;
3840     x86)
3841         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3842         if test "$subarch" = "x86_64"; then
3843             spic=$shared
3844         fi
3845     ;;
3846     ppc)
3847         check_cc <<EOF && subarch="ppc64"
3848         int test[(int)sizeof(char*) - 7];
3849 EOF
3850     ;;
3851 esac
3852
3853 enable $subarch
3854 enabled spic && enable_weak pic
3855
3856 # OS specific
3857 case $target_os in
3858     aix)
3859         SHFLAGS=-shared
3860         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3861         enabled shared && add_ldflags -Wl,-brtl
3862         ;;
3863     haiku)
3864         prefix_default="/boot/common"
3865         network_extralibs="-lnetwork"
3866         host_libs=
3867         ;;
3868     sunos)
3869         SHFLAGS='-shared -Wl,-h,$$(@F)'
3870         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3871         network_extralibs="-lsocket -lnsl"
3872         # When using suncc to build, the Solaris linker will mark
3873         # an executable with each instruction set encountered by
3874         # the Solaris assembler.  As our libraries contain their own
3875         # guards for processor-specific code, instead suppress
3876         # generation of the HWCAPS ELF section on Solaris x86 only.
3877         enabled_all suncc x86 &&
3878             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3879             add_ldflags -Wl,-M,mapfile
3880         nm_default='nm -P -g'
3881         ;;
3882     netbsd)
3883         disable symver
3884         oss_indev_extralibs="-lossaudio"
3885         oss_outdev_extralibs="-lossaudio"
3886         enabled gcc || check_ldflags -Wl,-zmuldefs
3887         ;;
3888     openbsd|bitrig)
3889         disable symver
3890         SHFLAGS='-shared'
3891         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3892         SLIB_INSTALL_LINKS=
3893         oss_indev_extralibs="-lossaudio"
3894         oss_outdev_extralibs="-lossaudio"
3895         ;;
3896     dragonfly)
3897         disable symver
3898         ;;
3899     freebsd)
3900         ;;
3901     bsd/os)
3902         add_extralibs -lpoll -lgnugetopt
3903         strip="strip -d"
3904         ;;
3905     darwin)
3906         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3907         enabled ppc && add_asflags -force_cpusubtype_ALL
3908         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3909         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3910         strip="${strip} -x"
3911         add_ldflags -Wl,-dynamic,-search_paths_first
3912         SLIBSUF=".dylib"
3913         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3914         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3915         objformat="macho"
3916         enabled x86_64 && objformat="macho64"
3917         enabled_any pic shared ||
3918             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3919         ;;
3920     mingw32*)
3921         if test $target_os = "mingw32ce"; then
3922             disable network
3923         else
3924             target_os=mingw32
3925         fi
3926         LIBTARGET=i386
3927         if enabled x86_64; then
3928             LIBTARGET="i386:x86-64"
3929         elif enabled arm; then
3930             LIBTARGET=arm-wince
3931         fi
3932         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3933         check_ldflags -Wl,--nxcompat
3934         check_ldflags -Wl,--dynamicbase
3935         shlibdir_default="$bindir_default"
3936         SLIBPREF=""
3937         SLIBSUF=".dll"
3938         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3939         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3940         dlltool="${cross_prefix}dlltool"
3941         if check_cmd lib.exe -list; then
3942             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3943             if enabled x86_64; then
3944                 LIBTARGET=x64
3945             fi
3946         elif check_cmd $dlltool --version; then
3947             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3948         fi
3949         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3950         SLIB_INSTALL_LINKS=
3951         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3952         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3953         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3954         objformat="win32"
3955         ranlib=:
3956         enable dos_paths
3957         ;;
3958     win32|win64)
3959         disable symver
3960         if enabled shared; then
3961             # Link to the import library instead of the normal static library
3962             # for shared libs.
3963             LD_LIB='%.lib'
3964             # Cannot build both shared and static libs with MSVC or icl.
3965             disable static
3966         fi
3967         shlibdir_default="$bindir_default"
3968         SLIBPREF=""
3969         SLIBSUF=".dll"
3970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3972         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3973         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3974         SLIB_INSTALL_LINKS=
3975         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3976         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3977         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3978         objformat="win32"
3979         ranlib=:
3980         enable dos_paths
3981         ;;
3982     cygwin*)
3983         target_os=cygwin
3984         shlibdir_default="$bindir_default"
3985         SLIBPREF="cyg"
3986         SLIBSUF=".dll"
3987         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3988         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3989         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3990         SLIB_INSTALL_LINKS=
3991         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3992         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3993         objformat="win32"
3994         enable dos_paths
3995         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3996         ;;
3997     *-dos|freedos|opendos)
3998         network_extralibs="-lsocket"
3999         objformat="coff"
4000         enable dos_paths
4001         add_cppflags -U__STRICT_ANSI__
4002         ;;
4003     linux)
4004         enable dv1394
4005         ;;
4006     irix*)
4007         target_os=irix
4008         ranlib="echo ignoring ranlib"
4009         ;;
4010     os/2*)
4011         strip="lxlite -CS"
4012         ln_s="cp -f"
4013         objformat="aout"
4014         add_cppflags -D_GNU_SOURCE
4015         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4016         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4017         LIBSUF="_s.a"
4018         SLIBPREF=""
4019         SLIBSUF=".dll"
4020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4022         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4023             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4024             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4025             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4026             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4027             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4028         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4029             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4030         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4031         enable dos_paths
4032         enable_weak os2threads
4033         ;;
4034     gnu/kfreebsd)
4035         add_cppflags -D_BSD_SOURCE
4036         ;;
4037     gnu)
4038         ;;
4039     qnx)
4040         add_cppflags -D_QNX_SOURCE
4041         network_extralibs="-lsocket"
4042         ;;
4043     symbian)
4044         SLIBSUF=".dll"
4045         enable dos_paths
4046         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4047         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4048         add_ldflags -Wl,--target1-abs,--no-undefined \
4049                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4050                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4051         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4052                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4053                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4054         ;;
4055     osf1)
4056         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4057         ;;
4058     minix)
4059         ;;
4060     plan9)
4061         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4062                      -D_REENTRANT_SOURCE        \
4063                      -D_RESEARCH_SOURCE         \
4064                      -DFD_SETSIZE=96            \
4065                      -DHAVE_SOCK_OPTS
4066         add_compat strtod.o strtod=avpriv_strtod
4067         network_extralibs='-lbsd'
4068         exeobjs=compat/plan9/main.o
4069         disable ffserver
4070         cp_f='cp'
4071         ;;
4072     none)
4073         ;;
4074     *)
4075         die "Unknown OS '$target_os'."
4076         ;;
4077 esac
4078
4079 # determine libc flavour
4080
4081 probe_libc(){
4082     pfx=$1
4083     pfx_no_=${pfx%_}
4084     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4085     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4086         eval ${pfx}libc_type=uclibc
4087         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4088     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4089         eval ${pfx}libc_type=glibc
4090         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4091     # MinGW headers can be installed on Cygwin, so check for newlib first.
4092     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4093         eval ${pfx}libc_type=newlib
4094         add_${pfx}cppflags -U__STRICT_ANSI__
4095     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4096     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4097         eval ${pfx}libc_type=mingw64
4098         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4099             add_compat msvcrt/snprintf.o
4100             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4101         fi
4102         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4103         eval test \$${pfx_no_}cc_type = "gcc" &&
4104             add_${pfx}cppflags -D__printf__=__gnu_printf__
4105     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4106          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4107         eval ${pfx}libc_type=mingw32
4108         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4109             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4110             die "ERROR: MinGW32 runtime version must be >= 3.15."
4111         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4112         eval test \$${pfx_no_}cc_type = "gcc" &&
4113             add_${pfx}cppflags -D__printf__=__gnu_printf__
4114     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4115         eval ${pfx}libc_type=msvcrt
4116         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4117         # 0x601 by default unless something else is set by the user.
4118         # This can easily lead to us detecting functions only present
4119         # in such new versions and producing binaries requiring windows 7.0.
4120         # Therefore explicitly set the default to XP unless the user has
4121         # set something else on the command line.
4122         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4123             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4124     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4125         eval ${pfx}libc_type=klibc
4126     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4127         eval ${pfx}libc_type=bionic
4128     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4129         eval ${pfx}libc_type=solaris
4130         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4131     fi
4132 }
4133
4134 probe_libc
4135 test -n "$libc_type" && enable libc_$libc_type
4136 probe_libc host_
4137 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4138
4139 case $libc_type in
4140     bionic)
4141         add_compat strtod.o strtod=avpriv_strtod
4142         ;;
4143     msvcrt)
4144         add_compat strtod.o strtod=avpriv_strtod
4145         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4146                                      _snprintf=avpriv_snprintf  \
4147                                      vsnprintf=avpriv_vsnprintf
4148         ;;
4149 esac
4150
4151 # hacks for compiler/libc/os combinations
4152
4153 if enabled_all tms470 libc_glibc; then
4154     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4155     add_cppflags -D__USER_LABEL_PREFIX__=
4156     add_cppflags -D__builtin_memset=memset
4157     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4158     add_cflags   -pds=48    # incompatible redefinition of macro
4159 fi
4160
4161 if enabled_all ccc libc_glibc; then
4162     add_ldflags -Wl,-z,now  # calls to libots crash without this
4163 fi
4164
4165 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4166     add_cppflags '-I\$(SRC_PATH)/compat/float'
4167
4168 esc(){
4169     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4170 }
4171
4172 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4173
4174 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4175
4176 set_default $PATHS_LIST
4177 set_default nm
4178
4179 # we need to build at least one lib type
4180 if ! enabled_any static shared; then
4181     cat <<EOF
4182 At least one library type must be built.
4183 Specify --enable-static to build the static libraries or --enable-shared to
4184 build the shared libraries as well. To only build the shared libraries specify
4185 --disable-static in addition to --enable-shared.
4186 EOF
4187     exit 1;
4188 fi
4189
4190 die_license_disabled() {
4191     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4192 }
4193
4194 die_license_disabled_gpl() {
4195     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4196 }
4197
4198 die_license_disabled gpl frei0r
4199 die_license_disabled gpl libcdio
4200 die_license_disabled gpl libutvideo
4201 die_license_disabled gpl libvidstab
4202 die_license_disabled gpl libx264
4203 die_license_disabled gpl libx265
4204 die_license_disabled gpl libxavs
4205 die_license_disabled gpl libxvid
4206 die_license_disabled gpl libzvbi
4207 die_license_disabled gpl x11grab
4208
4209 die_license_disabled nonfree libaacplus
4210 die_license_disabled nonfree libfaac
4211 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4212 enabled gpl && die_license_disabled_gpl nonfree openssl
4213
4214 die_license_disabled version3 libopencore_amrnb
4215 die_license_disabled version3 libopencore_amrwb
4216 die_license_disabled version3 libvo_aacenc
4217 die_license_disabled version3 libvo_amrwbenc
4218
4219 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4220
4221 disabled optimizations || check_cflags -fomit-frame-pointer
4222
4223 enable_weak_pic() {
4224     disabled pic && return
4225     enable pic
4226     add_cppflags -DPIC
4227     case "$target_os" in
4228     mingw*|cygwin*)
4229         ;;
4230     *)
4231         add_cflags -fPIC
4232         ;;
4233     esac
4234     add_asflags  -fPIC
4235 }
4236
4237 enabled pic && enable_weak_pic
4238
4239 check_cc <<EOF || die "Symbol mangling check failed."
4240 int ff_extern;
4241 EOF
4242 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4243 extern_prefix=${sym%%ff_extern*}
4244
4245 check_cc <<EOF && enable_weak inline_asm
4246 void foo(void) { __asm__ volatile ("" ::); }
4247 EOF
4248
4249 _restrict=
4250 for restrict_keyword in restrict __restrict__ __restrict; do
4251     check_cc <<EOF && _restrict=$restrict_keyword && break
4252 void foo(char * $restrict_keyword p);
4253 EOF
4254 done
4255
4256 check_cc <<EOF && enable pragma_deprecated
4257 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4258 EOF
4259
4260 check_cc <<EOF && enable attribute_packed
4261 struct { int x; } __attribute__((packed)) x;
4262 EOF
4263
4264 check_cc <<EOF && enable attribute_may_alias
4265 union { int x; } __attribute__((may_alias)) x;
4266 EOF
4267
4268 check_cc <<EOF || die "endian test failed"
4269 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4270 EOF
4271 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4272
4273
4274 if enabled asm; then
4275     enabled     arm         && nogas=die
4276     enabled_all ppc altivec && nogas=warn
4277     as=${gas:=$as}
4278     check_as <<EOF && enable gnu_as || \
4279         $nogas "GNU assembler not found, install gas-preprocessor"
4280 .macro m n
4281 \n: .int 0
4282 .endm
4283 m x
4284 EOF
4285
4286     check_as <<EOF && enable as_func
4287 .func test
4288 .endfunc
4289 EOF
4290 fi
4291
4292 check_inline_asm inline_asm_labels '"1:\n"'
4293
4294 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4295
4296 if enabled aarch64; then
4297     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4298     # internal assembler in clang 3.3 does not support this instruction
4299     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4300     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4301
4302     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4303
4304 elif enabled alpha; then
4305
4306     check_cflags -mieee
4307
4308 elif enabled arm; then
4309
4310     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4311 float func(float a, float b){ return a+b; }
4312 EOF
4313
4314     enabled thumb && check_cflags -mthumb || check_cflags -marm
4315
4316     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4317         enable vfp_args
4318     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4319         case "${cross_prefix:-$cc}" in
4320             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4321             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4322 __asm__ (".eabi_attribute 28, 1");
4323 int main(void) { return 0; }
4324 EOF
4325         esac
4326         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4327     fi
4328
4329     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4330     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4331     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4332     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4333     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4334     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4335
4336     [ $target_os = linux ] ||
4337         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4338             $ARCH_EXT_LIST_ARM
4339
4340     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4341
4342     check_as <<EOF && enable as_dn_directive
4343 ra .dn d0.i16
4344 .unreq ra
4345 EOF
4346
4347     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4348
4349 elif enabled mips; then
4350
4351     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4352     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4353      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4354     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4355      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4356     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4357      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4358     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4359      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4360
4361 elif enabled parisc; then
4362
4363     if enabled gcc; then
4364         case $($cc -dumpversion) in
4365             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4366         esac
4367     fi
4368
4369 elif enabled ppc; then
4370
4371     enable local_aligned_8 local_aligned_16 local_aligned_32
4372
4373     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4374     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4375     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4376     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4377
4378     # AltiVec flags: The FSF version of GCC differs from the Apple version
4379     if enabled altivec; then
4380         check_cflags -maltivec -mabi=altivec &&
4381         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4382         check_cflags -faltivec
4383
4384         # check if our compiler supports Motorola AltiVec C API
4385         check_cc <<EOF || disable altivec
4386 $inc_altivec_h
4387 int main(void) {
4388     vector signed int v1 = (vector signed int) { 0 };
4389     vector signed int v2 = (vector signed int) { 1 };
4390     v1 = vec_add(v1, v2);
4391     return 0;
4392 }
4393 EOF
4394
4395         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4396     fi
4397
4398 elif enabled x86; then
4399
4400     check_builtin rdtsc    intrin.h   "__rdtsc()"
4401     check_builtin mm_empty mmintrin.h "_mm_empty()"
4402
4403     enable local_aligned_8 local_aligned_16 local_aligned_32
4404
4405     # check whether EBP is available on x86
4406     # As 'i' is stored on the stack, this program will crash
4407     # if the base pointer is used to access it because the
4408     # base pointer is cleared in the inline assembly code.
4409     check_exec_crash <<EOF && enable ebp_available
4410 volatile int i=0;
4411 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4412 return i;
4413 EOF
4414
4415     # check whether EBX is available on x86
4416     check_inline_asm ebx_available '""::"b"(0)' &&
4417         check_inline_asm ebx_available '"":::"%ebx"'
4418
4419     # check whether xmm clobbers are supported
4420     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4421
4422     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4423         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4424
4425     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4426     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4427     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4428     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4429
4430     if ! disabled_any asm mmx yasm; then
4431         if check_cmd $yasmexe --version; then
4432             enabled x86_64 && yasm_extra="-m amd64"
4433             yasm_debug="-g dwarf2"
4434         elif check_cmd nasm -v; then
4435             yasmexe=nasm
4436             yasm_debug="-g -F dwarf"
4437             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4438         fi
4439
4440         YASMFLAGS="-f $objformat $yasm_extra"
4441         enabled pic               && append YASMFLAGS "-DPIC"
4442         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4443         case "$objformat" in
4444             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4445         esac
4446
4447         check_yasm "movbe ecx, [5]" && enable yasm ||
4448             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4449         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4450         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4451         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4452         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4453         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4454         check_yasm "CPU amdnop" || disable cpunop
4455     fi
4456
4457     case "$cpu" in
4458         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4459             disable fast_clz
4460         ;;
4461     esac
4462
4463 fi
4464
4465 check_ldflags -Wl,--as-needed
4466
4467 if check_func dlopen; then
4468     ldl=
4469 elif check_func dlopen -ldl; then
4470     ldl=-ldl
4471 fi
4472
4473 if ! disabled network; then
4474     check_func getaddrinfo $network_extralibs
4475     check_func getservbyport $network_extralibs
4476     check_func inet_aton $network_extralibs
4477
4478     check_type netdb.h "struct addrinfo"
4479     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4480     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4481     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4482     check_type poll.h "struct pollfd"
4483     check_type netinet/sctp.h "struct sctp_event_subscribe"
4484     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4485     check_type netinet/in.h "struct sockaddr_in6"
4486     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4487     check_type "sys/types.h sys/socket.h" socklen_t
4488
4489     # Prefer arpa/inet.h over winsock2
4490     if check_header arpa/inet.h ; then
4491         check_func closesocket
4492     elif check_header winsock2.h ; then
4493         check_func_headers winsock2.h closesocket -lws2 &&
4494             network_extralibs="-lws2" ||
4495         { check_func_headers winsock2.h closesocket -lws2_32 &&
4496             network_extralibs="-lws2_32"; } || disable winsock2_h network
4497         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4498
4499         check_type ws2tcpip.h socklen_t
4500         check_type ws2tcpip.h "struct addrinfo"
4501         check_type ws2tcpip.h "struct group_source_req"
4502         check_type ws2tcpip.h "struct ip_mreq_source"
4503         check_type ws2tcpip.h "struct ipv6_mreq"
4504         check_type winsock2.h "struct pollfd"
4505         check_struct winsock2.h "struct sockaddr" sa_len
4506         check_type ws2tcpip.h "struct sockaddr_in6"
4507         check_type ws2tcpip.h "struct sockaddr_storage"
4508     else
4509         disable network
4510     fi
4511 fi
4512
4513 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4514 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4515 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4516 check_builtin sarestart signal.h "SA_RESTART"
4517 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4518
4519 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4520 check_func  ${malloc_prefix}memalign            && enable memalign
4521 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4522
4523 check_func  access
4524 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4525 check_func  fcntl
4526 check_func  fork
4527 check_func  gethrtime
4528 check_func  getopt
4529 check_func  getrusage
4530 check_func  gettimeofday
4531 check_func  isatty
4532 check_func  localtime_r
4533 check_func  mach_absolute_time
4534 check_func  mkstemp
4535 check_func  mmap
4536 check_func  mprotect
4537 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4538 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4539 check_func  sched_getaffinity
4540 check_func  setrlimit
4541 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4542 check_func  strerror_r
4543 check_func  sysconf
4544 check_func  sysctl
4545 check_func  usleep
4546
4547 check_func_headers conio.h kbhit
4548 check_func_headers io.h setmode
4549 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4550 check_func_headers stdlib.h getenv
4551
4552 check_func_headers windows.h CoTaskMemFree -lole32
4553 check_func_headers windows.h GetProcessAffinityMask
4554 check_func_headers windows.h GetProcessTimes
4555 check_func_headers windows.h GetSystemTimeAsFileTime
4556 check_func_headers windows.h MapViewOfFile
4557 check_func_headers windows.h PeekNamedPipe
4558 check_func_headers windows.h SetConsoleTextAttribute
4559 check_func_headers windows.h Sleep
4560 check_func_headers windows.h VirtualAlloc
4561 check_func_headers glob.h glob
4562 enabled xlib &&
4563     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4564
4565 check_header cl/cl.h
4566 check_header direct.h
4567 check_header dlfcn.h
4568 check_header dxva.h
4569 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4570 check_header io.h
4571 check_header libcrystalhd/libcrystalhd_if.h
4572 check_header mach/mach_time.h
4573 check_header malloc.h
4574 check_header poll.h
4575 check_header sys/mman.h
4576 check_header sys/param.h
4577 check_header sys/resource.h
4578 check_header sys/select.h
4579 check_header sys/time.h
4580 check_header sys/un.h
4581 check_header termios.h
4582 check_header unistd.h
4583 check_header vdpau/vdpau.h
4584 check_header vdpau/vdpau_x11.h
4585 check_header VideoDecodeAcceleration/VDADecoder.h
4586 check_header windows.h
4587 check_header X11/extensions/XvMClib.h
4588 check_header asm/types.h
4589
4590 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4591 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4592 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4593
4594 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4595
4596 if ! disabled w32threads && ! enabled pthreads; then
4597     check_func_headers "windows.h process.h" _beginthreadex &&
4598         enable w32threads || disable w32threads
4599 fi
4600
4601 # check for some common methods of building with pthread support
4602 # do this before the optional library checks as some of them require pthreads
4603 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4604     enable pthreads
4605     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4606         add_cflags -pthread
4607         add_extralibs -pthread
4608     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4609         add_cflags -pthreads
4610         add_extralibs -pthreads
4611     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4612         add_cflags -ldl -pthread
4613         add_extralibs -ldl -pthread
4614     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4615         add_extralibs -lpthreadGC2
4616     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4617         :
4618     elif ! check_func pthread_join && ! check_func pthread_create; then
4619         disable pthreads
4620     fi
4621     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4622 fi
4623
4624
4625 if enabled pthreads; then
4626   check_func pthread_cancel
4627 fi
4628
4629 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4630 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4631
4632 check_lib math.h sin -lm && LIBM="-lm"
4633 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4634
4635 atan2f_args=2
4636 ldexpf_args=2
4637 powf_args=2
4638
4639 for func in $MATH_FUNCS; do
4640     eval check_mathfunc $func \${${func}_args:-1}
4641 done
4642
4643 # these are off by default, so fail if requested and not available
4644 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4645 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4646                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4647                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4648 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4649 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4650 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4651 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4652 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4653 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4654 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4655 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4656 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4657 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4658                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4659                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4660 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4661 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4662 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4663 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"
4664 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4665 enabled fontconfig        && enable libfontconfig
4666 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4667 enabled libfreetype       && require_libfreetype
4668 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4669 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4670                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4671                                done || die "ERROR: libgsm not found"; }
4672 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4673 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4674 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4675 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4676 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4677 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4678 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4679 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4680                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4681                                die "ERROR: libopenjpeg not found"; }
4682 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4683 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4684 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4685 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4686 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4687 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4688 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4689 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4690 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4691 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4692     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4693     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4694 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4695 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4696                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4697                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4698 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4699 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4700 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4701 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4702 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4703 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4704 enabled libvpx            && {
4705     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4706                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4707     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 ||
4708                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4709     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4710     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; } }
4711 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4712 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4713 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4714                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4715                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4716 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4717                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4718                                die "ERROR: libx265 version must be >= 13."; }
4719 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4720 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4721 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4722 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4723 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4724                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4725                                die "ERROR: openal not found"; } &&
4726                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4727                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4728 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4729                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4730                                die "ERROR: opencl not found"; } &&
4731                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4732                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4733                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4734 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4735                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4736                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4737                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4738                                die "ERROR: opengl not found."
4739                              }
4740 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4741                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4742                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4743                                die "ERROR: openssl not found"; }
4744 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4745
4746 if enabled gnutls; then
4747     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4748     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4749 fi
4750
4751 # libdc1394 check
4752 if enabled libdc1394; then
4753     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4754         enable libdc1394_2; } ||
4755     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4756         enable libdc1394_1; } ||
4757     die "ERROR: No version of libdc1394 found "
4758 fi
4759
4760 SDL_CONFIG="${cross_prefix}sdl-config"
4761 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4762     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4763     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4764     enable sdl
4765 else
4766   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4767     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4768     sdl_libs=$("${SDL_CONFIG}" --libs)
4769     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&