build: add fminf() emulation
[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     fminf
1649     isinf
1650     isnan
1651     ldexpf
1652     llrint
1653     llrintf
1654     log2
1655     log2f
1656     log10f
1657     lrint
1658     lrintf
1659     powf
1660     rint
1661     round
1662     roundf
1663     sinf
1664     trunc
1665     truncf
1666 "
1667
1668 SYSTEM_FUNCS="
1669     access
1670     aligned_malloc
1671     clock_gettime
1672     closesocket
1673     CommandLineToArgvW
1674     CoTaskMemFree
1675     CryptGenRandom
1676     dlopen
1677     fcntl
1678     flt_lim
1679     fork
1680     getaddrinfo
1681     gethrtime
1682     getopt
1683     GetProcessAffinityMask
1684     GetProcessMemoryInfo
1685     GetProcessTimes
1686     getrusage
1687     getservbyport
1688     GetSystemTimeAsFileTime
1689     gettimeofday
1690     glob
1691     glXGetProcAddress
1692     inet_aton
1693     isatty
1694     jack_port_get_latency_range
1695     kbhit
1696     localtime_r
1697     lzo1x_999_compress
1698     mach_absolute_time
1699     MapViewOfFile
1700     memalign
1701     mkstemp
1702     mmap
1703     mprotect
1704     nanosleep
1705     PeekNamedPipe
1706     posix_memalign
1707     pthread_cancel
1708     sched_getaffinity
1709     SetConsoleTextAttribute
1710     setmode
1711     setrlimit
1712     Sleep
1713     strerror_r
1714     sysconf
1715     sysctl
1716     usleep
1717     VirtualAlloc
1718     wglGetProcAddress
1719 "
1720
1721 TOOLCHAIN_FEATURES="
1722     as_dn_directive
1723     as_func
1724     asm_mod_q
1725     attribute_may_alias
1726     attribute_packed
1727     ebp_available
1728     ebx_available
1729     gnu_as
1730     gnu_windres
1731     ibm_asm
1732     inline_asm_labels
1733     inline_asm_nonlocal_labels
1734     inline_asm_direct_symbol_refs
1735     pragma_deprecated
1736     rsync_contimeout
1737     symver_asm_label
1738     symver_gnu_asm
1739     vfp_args
1740     xform_asm
1741     xmm_clobbers
1742 "
1743
1744 TYPES_LIST="
1745     socklen_t
1746     struct_addrinfo
1747     struct_group_source_req
1748     struct_ip_mreq_source
1749     struct_ipv6_mreq
1750     struct_pollfd
1751     struct_rusage_ru_maxrss
1752     struct_sctp_event_subscribe
1753     struct_sockaddr_in6
1754     struct_sockaddr_sa_len
1755     struct_sockaddr_storage
1756     struct_stat_st_mtim_tv_nsec
1757     struct_v4l2_frmivalenum_discrete
1758 "
1759
1760 HAVE_LIST="
1761     $ARCH_EXT_LIST
1762     $(add_suffix _external $ARCH_EXT_LIST)
1763     $(add_suffix _inline   $ARCH_EXT_LIST)
1764     $ARCH_FEATURES
1765     $ATOMICS_LIST
1766     $BUILTIN_LIST
1767     $HAVE_LIST_CMDLINE
1768     $HAVE_LIST_PUB
1769     $HEADERS_LIST
1770     $MATH_FUNCS
1771     $SYSTEM_FUNCS
1772     $THREADS_LIST
1773     $TOOLCHAIN_FEATURES
1774     $TYPES_LIST
1775     atomics_native
1776     dos_paths
1777     dxva2api_cobj
1778     dxva2_lib
1779     libc_msvcrt
1780     libdc1394_1
1781     libdc1394_2
1782     makeinfo
1783     perl
1784     pod2man
1785     sdl
1786     texi2html
1787     threads
1788     vdpau_x11
1789     xlib
1790 "
1791
1792 # options emitted with CONFIG_ prefix but not available on the command line
1793 CONFIG_EXTRA="
1794     aandcttables
1795     ac3dsp
1796     audio_frame_queue
1797     cabac
1798     dsputil
1799     exif
1800     frame_thread_encoder
1801     gcrypt
1802     golomb
1803     gplv3
1804     h263dsp
1805     h264chroma
1806     h264dsp
1807     h264pred
1808     h264qpel
1809     hpeldsp
1810     huffman
1811     huffyuvdsp
1812     huffyuvencdsp
1813     intrax8
1814     lgplv3
1815     llauddsp
1816     llviddsp
1817     lpc
1818     mpegaudio
1819     mpegaudiodsp
1820     mpegvideo
1821     mpegvideoenc
1822     nettle
1823     qpeldsp
1824     rangecoder
1825     riffdec
1826     riffenc
1827     rtpdec
1828     rtpenc_chain
1829     sinewin
1830     tpeldsp
1831     videodsp
1832     vp3dsp
1833 "
1834
1835 CMDLINE_SELECT="
1836     $ARCH_EXT_LIST
1837     $CONFIG_LIST
1838     $HAVE_LIST_CMDLINE
1839     $THREADS_LIST
1840     asm
1841     cross_compile
1842     debug
1843     extra_warnings
1844     logging
1845     lto
1846     optimizations
1847     rpath
1848     stripping
1849 "
1850
1851 PATHS_LIST="
1852     bindir
1853     datadir
1854     docdir
1855     incdir
1856     libdir
1857     mandir
1858     prefix
1859     shlibdir
1860 "
1861
1862 CMDLINE_SET="
1863     $PATHS_LIST
1864     ar
1865     arch
1866     as
1867     assert_level
1868     build_suffix
1869     cc
1870     cpu
1871     cross_prefix
1872     cxx
1873     dep_cc
1874     extra_version
1875     gas
1876     host_cc
1877     host_cflags
1878     host_ld
1879     host_ldflags
1880     host_libs
1881     host_os
1882     install
1883     ld
1884     logfile
1885     malloc_prefix
1886     nm
1887     optflags
1888     pkg_config
1889     pkg_config_flags
1890     progs_suffix
1891     random_seed
1892     ranlib
1893     samples
1894     strip
1895     sysinclude
1896     sysroot
1897     target_exec
1898     target_os
1899     target_path
1900     target_samples
1901     tempprefix
1902     toolchain
1903     valgrind
1904     yasmexe
1905 "
1906
1907 CMDLINE_APPEND="
1908     extra_cflags
1909     extra_cxxflags
1910     host_cppflags
1911 "
1912
1913 # code dependency declarations
1914
1915 # architecture extensions
1916
1917 armv5te_deps="arm"
1918 armv6_deps="arm"
1919 armv6t2_deps="arm"
1920 armv8_deps="aarch64"
1921 neon_deps_any="aarch64 arm"
1922 vfp_deps_any="aarch64 arm"
1923 vfpv3_deps="vfp"
1924
1925 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1926
1927 mipsfpu_deps="mips"
1928 mips32r2_deps="mips"
1929 mipsdspr1_deps="mips"
1930 mipsdspr2_deps="mips"
1931
1932 altivec_deps="ppc"
1933 ppc4xx_deps="ppc"
1934
1935 cpunop_deps="i686"
1936 x86_64_select="i686"
1937 x86_64_suggest="fast_cmov"
1938
1939 amd3dnow_deps="mmx"
1940 amd3dnowext_deps="amd3dnow"
1941 i686_deps="x86"
1942 mmx_deps="x86"
1943 mmxext_deps="mmx"
1944 sse_deps="mmxext"
1945 sse2_deps="sse"
1946 sse3_deps="sse2"
1947 ssse3_deps="sse3"
1948 sse4_deps="ssse3"
1949 sse42_deps="sse4"
1950 avx_deps="sse42"
1951 xop_deps="avx"
1952 fma3_deps="avx"
1953 fma4_deps="avx"
1954 avx2_deps="avx"
1955
1956 mmx_external_deps="yasm"
1957 mmx_inline_deps="inline_asm"
1958 mmx_suggest="mmx_external mmx_inline"
1959
1960 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1961     eval dep=\$${ext}_deps
1962     eval ${ext}_external_deps='"${dep}_external"'
1963     eval ${ext}_inline_deps='"${dep}_inline"'
1964     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1965 done
1966
1967 aligned_stack_if_any="aarch64 ppc x86"
1968 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1969 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1970 fast_unaligned_if_any="aarch64 ppc x86"
1971
1972 need_memalign="altivec neon sse"
1973
1974 # system capabilities
1975
1976 symver_if_any="symver_asm_label symver_gnu_asm"
1977
1978 # threading support
1979 atomics_gcc_if="sync_val_compare_and_swap"
1980 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1981 atomics_win32_if="MemoryBarrier"
1982 atomics_native_if_any="$ATOMICS_LIST"
1983 w32threads_deps="atomics_native"
1984 threads_if_any="$THREADS_LIST"
1985
1986 # subsystems
1987 dct_select="rdft"
1988 error_resilience_select="dsputil"
1989 frame_thread_encoder_deps="encoders threads"
1990 mdct_select="fft"
1991 rdft_select="fft"
1992 mpegaudio_select="mpegaudiodsp"
1993 mpegaudiodsp_select="dct"
1994 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1995 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1996
1997 # decoders / encoders
1998 aac_decoder_select="mdct sinewin"
1999 aac_encoder_select="audio_frame_queue mdct sinewin"
2000 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2001 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2002 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2003 ac3_encoder_select="mdct ac3dsp dsputil"
2004 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2005 aic_decoder_select="dsputil golomb"
2006 alac_encoder_select="lpc"
2007 als_decoder_select="dsputil"
2008 amrnb_decoder_select="lsp"
2009 amrwb_decoder_select="lsp"
2010 amv_decoder_select="sp5x_decoder exif"
2011 amv_encoder_select="aandcttables"
2012 ape_decoder_select="dsputil llauddsp"
2013 asv1_decoder_select="dsputil"
2014 asv1_encoder_select="dsputil"
2015 asv2_decoder_select="dsputil"
2016 asv2_encoder_select="dsputil"
2017 atrac1_decoder_select="mdct sinewin"
2018 atrac3_decoder_select="mdct"
2019 atrac3p_decoder_select="mdct sinewin"
2020 avrn_decoder_select="exif"
2021 bink_decoder_select="dsputil hpeldsp"
2022 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2023 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2024 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
2025 cllc_decoder_select="dsputil"
2026 comfortnoise_encoder_select="lpc"
2027 cook_decoder_select="dsputil mdct sinewin"
2028 cscd_decoder_select="lzo"
2029 cscd_decoder_suggest="zlib"
2030 dca_decoder_select="mdct"
2031 dirac_decoder_select="dsputil dwt golomb videodsp"
2032 dnxhd_decoder_select="dsputil"
2033 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2034 dvvideo_decoder_select="dsputil"
2035 dvvideo_encoder_select="dsputil"
2036 dxa_decoder_select="zlib"
2037 eac3_decoder_select="ac3_decoder"
2038 eac3_encoder_select="ac3_encoder"
2039 eamad_decoder_select="aandcttables dsputil mpegvideo"
2040 eatgq_decoder_select="aandcttables"
2041 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2042 exr_decoder_select="zlib"
2043 ffv1_decoder_select="golomb rangecoder"
2044 ffv1_encoder_select="rangecoder"
2045 ffvhuff_decoder_select="huffyuv_decoder"
2046 ffvhuff_encoder_select="huffyuv_encoder"
2047 fic_decoder_select="golomb"
2048 flac_decoder_select="golomb"
2049 flac_encoder_select="dsputil golomb lpc"
2050 flashsv_decoder_select="zlib"
2051 flashsv_encoder_select="zlib"
2052 flashsv2_encoder_select="zlib"
2053 flashsv2_decoder_select="zlib"
2054 flv_decoder_select="h263_decoder"
2055 flv_encoder_select="h263_encoder"
2056 fourxm_decoder_select="dsputil"
2057 fraps_decoder_select="dsputil huffman"
2058 g2m_decoder_select="dsputil zlib"
2059 g729_decoder_select="dsputil"
2060 h261_decoder_select="error_resilience mpegvideo"
2061 h261_encoder_select="aandcttables mpegvideoenc"
2062 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2063 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2064 h263i_decoder_select="h263_decoder"
2065 h263p_encoder_select="h263_encoder"
2066 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2067 h264_decoder_suggest="error_resilience"
2068 hevc_decoder_select="cabac dsputil golomb videodsp"
2069 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2070 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2071 iac_decoder_select="imc_decoder"
2072 imc_decoder_select="dsputil fft mdct sinewin"
2073 indeo3_decoder_select="hpeldsp"
2074 interplay_video_decoder_select="hpeldsp"
2075 jpegls_decoder_select="golomb mjpeg_decoder"
2076 jpegls_encoder_select="golomb"
2077 jv_decoder_select="dsputil"
2078 lagarith_decoder_select="huffyuvdsp"
2079 ljpeg_encoder_select="aandcttables mpegvideoenc"
2080 loco_decoder_select="golomb"
2081 mdec_decoder_select="dsputil error_resilience mpegvideo"
2082 metasound_decoder_select="lsp mdct sinewin"
2083 mimic_decoder_select="dsputil hpeldsp"
2084 mjpeg_decoder_select="dsputil hpeldsp exif"
2085 mjpeg_encoder_select="aandcttables mpegvideoenc"
2086 mjpegb_decoder_select="mjpeg_decoder"
2087 mlp_decoder_select="mlp_parser"
2088 motionpixels_decoder_select="dsputil"
2089 mp1_decoder_select="mpegaudio"
2090 mp1float_decoder_select="mpegaudio"
2091 mp2_decoder_select="mpegaudio"
2092 mp2float_decoder_select="mpegaudio"
2093 mp3_decoder_select="mpegaudio"
2094 mp3adu_decoder_select="mpegaudio"
2095 mp3adufloat_decoder_select="mpegaudio"
2096 mp3float_decoder_select="mpegaudio"
2097 mp3on4_decoder_select="mpegaudio"
2098 mp3on4float_decoder_select="mpegaudio"
2099 mpc7_decoder_select="dsputil mpegaudiodsp"
2100 mpc8_decoder_select="mpegaudiodsp"
2101 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2102 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2103 mpeg1video_decoder_select="error_resilience mpegvideo"
2104 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2105 mpeg2video_decoder_select="error_resilience mpegvideo"
2106 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2107 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2108 mpeg4_encoder_select="h263_encoder"
2109 msmpeg4v1_decoder_select="h263_decoder"
2110 msmpeg4v2_decoder_select="h263_decoder"
2111 msmpeg4v2_encoder_select="h263_encoder"
2112 msmpeg4v3_decoder_select="h263_decoder"
2113 msmpeg4v3_encoder_select="h263_encoder"
2114 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2115 mxpeg_decoder_select="mjpeg_decoder"
2116 nellymoser_decoder_select="mdct sinewin"
2117 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2118 nuv_decoder_select="dsputil lzo"
2119 on2avc_decoder_select="mdct"
2120 opus_decoder_deps="swresample"
2121 png_decoder_select="zlib"
2122 png_encoder_select="huffyuvencdsp zlib"
2123 prores_decoder_select="dsputil"
2124 prores_encoder_select="dsputil"
2125 qcelp_decoder_select="lsp"
2126 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2127 ra_144_encoder_select="audio_frame_queue lpc"
2128 ralf_decoder_select="golomb"
2129 rawvideo_decoder_select="dsputil"
2130 rtjpeg_decoder_select="dsputil"
2131 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2132 rv10_encoder_select="h263_encoder"
2133 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2134 rv20_encoder_select="h263_encoder"
2135 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2136 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2137 shorten_decoder_select="golomb"
2138 sipr_decoder_select="lsp"
2139 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2140 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2141 sonic_decoder_select="golomb rangecoder"
2142 sonic_encoder_select="golomb rangecoder"
2143 sonic_ls_encoder_select="golomb rangecoder"
2144 sp5x_decoder_select="mjpeg_decoder"
2145 svq1_decoder_select="hpeldsp"
2146 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2147 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2148 svq3_decoder_suggest="zlib"
2149 tak_decoder_select="dsputil"
2150 theora_decoder_select="vp3_decoder"
2151 thp_decoder_select="mjpeg_decoder"
2152 tiff_decoder_suggest="zlib"
2153 tiff_encoder_suggest="zlib"
2154 truehd_decoder_select="mlp_parser"
2155 truemotion2_decoder_select="dsputil"
2156 truespeech_decoder_select="dsputil"
2157 tscc_decoder_select="zlib"
2158 twinvq_decoder_select="mdct lsp sinewin"
2159 utvideo_decoder_select="dsputil"
2160 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2161 vble_decoder_select="huffyuvdsp"
2162 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2163 vc1image_decoder_select="vc1_decoder"
2164 vorbis_decoder_select="mdct"
2165 vorbis_encoder_select="mdct"
2166 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2167 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2168 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2169 vp6a_decoder_select="vp6_decoder"
2170 vp6f_decoder_select="vp6_decoder"
2171 vp7_decoder_select="h264pred videodsp"
2172 vp8_decoder_select="h264pred videodsp"
2173 vp9_decoder_select="videodsp vp9_parser"
2174 webp_decoder_select="vp8_decoder"
2175 wmapro_decoder_select="mdct sinewin"
2176 wmav1_decoder_select="mdct sinewin"
2177 wmav1_encoder_select="mdct sinewin"
2178 wmav2_decoder_select="mdct sinewin"
2179 wmav2_encoder_select="mdct sinewin"
2180 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2181 wmv1_decoder_select="h263_decoder"
2182 wmv1_encoder_select="h263_encoder"
2183 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2184 wmv2_encoder_select="h263_encoder"
2185 wmv3_decoder_select="vc1_decoder"
2186 wmv3image_decoder_select="wmv3_decoder"
2187 zerocodec_decoder_select="zlib"
2188 zlib_decoder_select="zlib"
2189 zlib_encoder_select="zlib"
2190 zmbv_decoder_select="zlib"
2191 zmbv_encoder_select="zlib"
2192
2193 # hardware accelerators
2194 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2195 dxva2_deps="dxva2api_h"
2196 vaapi_deps="va_va_h"
2197 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2198 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2199 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2200 xvmc_deps="X11_extensions_XvMClib_h"
2201
2202 h263_vaapi_hwaccel_deps="vaapi"
2203 h263_vaapi_hwaccel_select="h263_decoder"
2204 h263_vdpau_hwaccel_deps="vdpau"
2205 h263_vdpau_hwaccel_select="h263_decoder"
2206 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2207 h264_dxva2_hwaccel_deps="dxva2"
2208 h264_dxva2_hwaccel_select="h264_decoder"
2209 h264_vaapi_hwaccel_deps="vaapi"
2210 h264_vaapi_hwaccel_select="h264_decoder"
2211 h264_vda_decoder_deps="vda"
2212 h264_vda_decoder_select="h264_decoder"
2213 h264_vda_hwaccel_deps="vda"
2214 h264_vda_hwaccel_select="h264_decoder"
2215 h264_vda_old_hwaccel_deps="vda"
2216 h264_vda_old_hwaccel_select="h264_decoder"
2217 h264_vdpau_decoder_deps="vdpau"
2218 h264_vdpau_decoder_select="h264_decoder"
2219 h264_vdpau_hwaccel_deps="vdpau"
2220 h264_vdpau_hwaccel_select="h264_decoder"
2221 mpeg_vdpau_decoder_deps="vdpau"
2222 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2223 mpeg_xvmc_hwaccel_deps="xvmc"
2224 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2225 mpeg1_vdpau_decoder_deps="vdpau"
2226 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2227 mpeg1_vdpau_hwaccel_deps="vdpau"
2228 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2229 mpeg1_xvmc_hwaccel_deps="xvmc"
2230 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2231 mpeg2_crystalhd_decoder_select="crystalhd"
2232 mpeg2_dxva2_hwaccel_deps="dxva2"
2233 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_vaapi_hwaccel_deps="vaapi"
2235 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2236 mpeg2_vdpau_hwaccel_deps="vdpau"
2237 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2238 mpeg2_xvmc_hwaccel_deps="xvmc"
2239 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2240 mpeg4_crystalhd_decoder_select="crystalhd"
2241 mpeg4_vaapi_hwaccel_deps="vaapi"
2242 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2243 mpeg4_vdpau_decoder_deps="vdpau"
2244 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2245 mpeg4_vdpau_hwaccel_deps="vdpau"
2246 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2247 msmpeg4_crystalhd_decoder_select="crystalhd"
2248 vc1_crystalhd_decoder_select="crystalhd"
2249 vc1_dxva2_hwaccel_deps="dxva2"
2250 vc1_dxva2_hwaccel_select="vc1_decoder"
2251 vc1_vaapi_hwaccel_deps="vaapi"
2252 vc1_vaapi_hwaccel_select="vc1_decoder"
2253 vc1_vdpau_decoder_deps="vdpau"
2254 vc1_vdpau_decoder_select="vc1_decoder"
2255 vc1_vdpau_hwaccel_deps="vdpau"
2256 vc1_vdpau_hwaccel_select="vc1_decoder"
2257 wmv3_crystalhd_decoder_select="crystalhd"
2258 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2259 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2260 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2261 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2262
2263 # parsers
2264 h264_parser_select="h264_decoder"
2265 hevc_parser_select="hevc_decoder"
2266 mpegvideo_parser_select="error_resilience mpegvideo"
2267 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2268 vc1_parser_select="mpegvideo"
2269
2270 # external libraries
2271 libaacplus_encoder_deps="libaacplus"
2272 libcelt_decoder_deps="libcelt"
2273 libfaac_encoder_deps="libfaac"
2274 libfaac_encoder_select="audio_frame_queue"
2275 libfdk_aac_decoder_deps="libfdk_aac"
2276 libfdk_aac_encoder_deps="libfdk_aac"
2277 libfdk_aac_encoder_select="audio_frame_queue"
2278 libgme_demuxer_deps="libgme"
2279 libgsm_decoder_deps="libgsm"
2280 libgsm_encoder_deps="libgsm"
2281 libgsm_ms_decoder_deps="libgsm"
2282 libgsm_ms_encoder_deps="libgsm"
2283 libilbc_decoder_deps="libilbc"
2284 libilbc_encoder_deps="libilbc"
2285 libmodplug_demuxer_deps="libmodplug"
2286 libmp3lame_encoder_deps="libmp3lame"
2287 libmp3lame_encoder_select="audio_frame_queue"
2288 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2289 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2290 libopencore_amrnb_encoder_select="audio_frame_queue"
2291 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2292 libopenjpeg_decoder_deps="libopenjpeg"
2293 libopenjpeg_encoder_deps="libopenjpeg"
2294 libopus_decoder_deps="libopus"
2295 libopus_encoder_deps="libopus"
2296 libopus_encoder_select="audio_frame_queue"
2297 libquvi_demuxer_deps="libquvi"
2298 libschroedinger_decoder_deps="libschroedinger"
2299 libschroedinger_encoder_deps="libschroedinger"
2300 libshine_encoder_deps="libshine"
2301 libshine_encoder_select="audio_frame_queue"
2302 libspeex_decoder_deps="libspeex"
2303 libspeex_encoder_deps="libspeex"
2304 libspeex_encoder_select="audio_frame_queue"
2305 libstagefright_h264_decoder_deps="libstagefright_h264"
2306 libtheora_encoder_deps="libtheora"
2307 libtwolame_encoder_deps="libtwolame"
2308 libvo_aacenc_encoder_deps="libvo_aacenc"
2309 libvo_aacenc_encoder_select="audio_frame_queue"
2310 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2311 libvorbis_decoder_deps="libvorbis"
2312 libvorbis_encoder_deps="libvorbis"
2313 libvorbis_encoder_select="audio_frame_queue"
2314 libvpx_vp8_decoder_deps="libvpx"
2315 libvpx_vp8_encoder_deps="libvpx"
2316 libvpx_vp9_decoder_deps="libvpx"
2317 libvpx_vp9_encoder_deps="libvpx"
2318 libwavpack_encoder_deps="libwavpack"
2319 libwebp_encoder_deps="libwebp"
2320 libx264_encoder_deps="libx264"
2321 libx264rgb_encoder_deps="libx264"
2322 libx265_encoder_deps="libx265"
2323 libxavs_encoder_deps="libxavs"
2324 libxvid_encoder_deps="libxvid"
2325 libutvideo_decoder_deps="libutvideo"
2326 libutvideo_encoder_deps="libutvideo"
2327 libzvbi_teletext_decoder_deps="libzvbi"
2328
2329 # demuxers / muxers
2330 ac3_demuxer_select="ac3_parser"
2331 asf_demuxer_select="riffdec"
2332 asf_muxer_select="riffenc"
2333 asf_stream_muxer_select="asf_muxer"
2334 avi_demuxer_select="riffdec exif"
2335 avi_muxer_select="riffenc"
2336 avisynth_demuxer_deps="avisynth"
2337 avisynth_demuxer_select="riffdec"
2338 caf_demuxer_select="riffdec"
2339 dirac_demuxer_select="dirac_parser"
2340 dts_demuxer_select="dca_parser"
2341 dtshd_demuxer_select="dca_parser"
2342 dxa_demuxer_select="riffdec"
2343 eac3_demuxer_select="ac3_parser"
2344 f4v_muxer_select="mov_muxer"
2345 flac_demuxer_select="flac_parser"
2346 hds_muxer_select="flv_muxer"
2347 hls_muxer_select="mpegts_muxer"
2348 image2_alias_pix_demuxer_select="image2_demuxer"
2349 image2_brender_pix_demuxer_select="image2_demuxer"
2350 ipod_muxer_select="mov_muxer"
2351 ismv_muxer_select="mov_muxer"
2352 libnut_demuxer_deps="libnut"
2353 libnut_muxer_deps="libnut"
2354 matroska_audio_muxer_select="matroska_muxer"
2355 matroska_demuxer_select="riffdec"
2356 matroska_demuxer_suggest="bzlib lzo zlib"
2357 matroska_muxer_select="riffenc"
2358 mmf_muxer_select="riffenc"
2359 mov_demuxer_select="riffdec"
2360 mov_demuxer_suggest="zlib"
2361 mov_muxer_select="riffenc rtpenc_chain"
2362 mp3_demuxer_select="mpegaudio_parser"
2363 mp4_muxer_select="mov_muxer"
2364 mpegts_muxer_select="adts_muxer latm_muxer"
2365 mpegtsraw_demuxer_select="mpegts_demuxer"
2366 mxf_d10_muxer_select="mxf_muxer"
2367 nut_muxer_select="riffenc"
2368 nuv_demuxer_select="riffdec"
2369 ogg_demuxer_select="golomb"
2370 psp_muxer_select="mov_muxer"
2371 rtp_demuxer_select="sdp_demuxer"
2372 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2373 rtsp_demuxer_select="http_protocol rtpdec"
2374 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2375 sap_demuxer_select="sdp_demuxer"
2376 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2377 sdp_demuxer_select="rtpdec"
2378 smoothstreaming_muxer_select="ismv_muxer"
2379 spdif_muxer_select="aac_parser"
2380 tak_demuxer_select="tak_parser"
2381 tg2_muxer_select="mov_muxer"
2382 tgp_muxer_select="mov_muxer"
2383 vobsub_demuxer_select="mpegps_demuxer"
2384 w64_demuxer_select="wav_demuxer"
2385 w64_muxer_select="wav_muxer"
2386 wav_demuxer_select="riffdec"
2387 wav_muxer_select="riffenc"
2388 webm_muxer_select="riffenc"
2389 wtv_demuxer_select="riffdec"
2390 wtv_muxer_select="riffenc"
2391 xmv_demuxer_select="riffdec"
2392 xwma_demuxer_select="riffdec"
2393
2394 # indevs / outdevs
2395 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2396 alsa_outdev_deps="alsa_asoundlib_h"
2397 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2398 avfoundation_indev_select="avfoundation"
2399 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2400 caca_outdev_deps="libcaca"
2401 decklink_outdev_deps="decklink pthreads"
2402 decklink_outdev_extralibs="-lstdc++"
2403 dshow_indev_deps="IBaseFilter"
2404 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2405 dv1394_indev_deps="dv1394"
2406 dv1394_indev_select="dv_demuxer"
2407 fbdev_indev_deps="linux_fb_h"
2408 fbdev_outdev_deps="linux_fb_h"
2409 gdigrab_indev_deps="CreateDIBSection"
2410 gdigrab_indev_extralibs="-lgdi32"
2411 gdigrab_indev_select="bmp_decoder"
2412 iec61883_indev_deps="libiec61883"
2413 jack_indev_deps="jack_jack_h sem_timedwait"
2414 lavfi_indev_deps="avfilter"
2415 libcdio_indev_deps="libcdio"
2416 libdc1394_indev_deps="libdc1394"
2417 libv4l2_indev_deps="libv4l2"
2418 openal_indev_deps="openal"
2419 opengl_outdev_deps="opengl"
2420 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2421 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2422 pulse_indev_deps="libpulse"
2423 pulse_outdev_deps="libpulse"
2424 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2425 qtkit_indev_select="qtkit"
2426 sdl_outdev_deps="sdl"
2427 sndio_indev_deps="sndio_h"
2428 sndio_outdev_deps="sndio_h"
2429 v4l_indev_deps="linux_videodev_h"
2430 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2431 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2432 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2433 vfwcap_indev_extralibs="-lavicap32"
2434 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2435 xv_outdev_extralibs="-lXv -lX11 -lXext"
2436 x11grab_indev_deps="x11grab"
2437
2438 # protocols
2439 bluray_protocol_deps="libbluray"
2440 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2441 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2442 ffrtmpcrypt_protocol_select="tcp_protocol"
2443 ffrtmphttp_protocol_deps="!librtmp_protocol"
2444 ffrtmphttp_protocol_select="http_protocol"
2445 ftp_protocol_select="tcp_protocol"
2446 gopher_protocol_select="network"
2447 http_protocol_select="tcp_protocol"
2448 httpproxy_protocol_select="tcp_protocol"
2449 https_protocol_select="tls_protocol"
2450 librtmp_protocol_deps="librtmp"
2451 librtmpe_protocol_deps="librtmp"
2452 librtmps_protocol_deps="librtmp"
2453 librtmpt_protocol_deps="librtmp"
2454 librtmpte_protocol_deps="librtmp"
2455 libssh_protocol_deps="libssh"
2456 mmsh_protocol_select="http_protocol"
2457 mmst_protocol_select="network"
2458 rtmp_protocol_deps="!librtmp_protocol"
2459 rtmp_protocol_select="tcp_protocol"
2460 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2461 rtmps_protocol_deps="!librtmp_protocol"
2462 rtmps_protocol_select="tls_protocol"
2463 rtmpt_protocol_select="ffrtmphttp_protocol"
2464 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2465 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2466 rtp_protocol_select="udp_protocol"
2467 sctp_protocol_deps="struct_sctp_event_subscribe"
2468 sctp_protocol_select="network"
2469 srtp_protocol_select="rtp_protocol"
2470 tcp_protocol_select="network"
2471 tls_protocol_deps_any="openssl gnutls"
2472 tls_protocol_select="tcp_protocol"
2473 udp_protocol_select="network"
2474 unix_protocol_deps="sys_un_h"
2475 unix_protocol_select="network"
2476
2477 # filters
2478 aconvert_filter_deps="swresample"
2479 amovie_filter_deps="avcodec avformat"
2480 aresample_filter_deps="swresample"
2481 ass_filter_deps="libass"
2482 asyncts_filter_deps="avresample"
2483 atempo_filter_deps="avcodec"
2484 atempo_filter_select="rdft"
2485 azmq_filter_deps="libzmq"
2486 blackframe_filter_deps="gpl"
2487 boxblur_filter_deps="gpl"
2488 bs2b_filter_deps="libbs2b"
2489 colormatrix_filter_deps="gpl"
2490 cropdetect_filter_deps="gpl"
2491 dctdnoiz_filter_deps="avcodec"
2492 dctdnoiz_filter_select="dct"
2493 delogo_filter_deps="gpl"
2494 deshake_filter_deps="avcodec"
2495 deshake_filter_select="dsputil"
2496 drawtext_filter_deps="libfreetype"
2497 ebur128_filter_deps="gpl"
2498 flite_filter_deps="libflite"
2499 frei0r_filter_deps="frei0r dlopen"
2500 frei0r_filter_extralibs='$ldl'
2501 frei0r_src_filter_deps="frei0r dlopen"
2502 frei0r_src_filter_extralibs='$ldl'
2503 geq_filter_deps="gpl"
2504 histeq_filter_deps="gpl"
2505 hqdn3d_filter_deps="gpl"
2506 interlace_filter_deps="gpl"
2507 kerndeint_filter_deps="gpl"
2508 ladspa_filter_deps="ladspa dlopen"
2509 ladspa_filter_extralibs='$ldl'
2510 mcdeint_filter_deps="avcodec gpl"
2511 movie_filter_deps="avcodec avformat"
2512 mp_filter_deps="gpl avcodec swscale inline_asm"
2513 mpdecimate_filter_deps="gpl avcodec"
2514 mptestsrc_filter_deps="gpl"
2515 negate_filter_deps="lut_filter"
2516 perspective_filter_deps="gpl"
2517 ocv_filter_deps="libopencv"
2518 owdenoise_filter_deps="gpl"
2519 pan_filter_deps="swresample"
2520 phase_filter_deps="gpl"
2521 pp_filter_deps="gpl postproc"
2522 pullup_filter_deps="gpl"
2523 removelogo_filter_deps="avcodec avformat swscale"
2524 resample_filter_deps="avresample"
2525 sab_filter_deps="gpl swscale"
2526 scale_filter_deps="swscale"
2527 smartblur_filter_deps="gpl swscale"
2528 showspectrum_filter_deps="avcodec"
2529 showspectrum_filter_select="rdft"
2530 spp_filter_deps="gpl avcodec"
2531 spp_filter_select="fft"
2532 stereo3d_filter_deps="gpl"
2533 subtitles_filter_deps="avformat avcodec libass"
2534 super2xsai_filter_deps="gpl"
2535 tinterlace_filter_deps="gpl"
2536 vidstabdetect_filter_deps="libvidstab"
2537 vidstabtransform_filter_deps="libvidstab"
2538 pixfmts_super2xsai_test_deps="super2xsai_filter"
2539 tinterlace_merge_test_deps="tinterlace_filter"
2540 tinterlace_pad_test_deps="tinterlace_filter"
2541 zmq_filter_deps="libzmq"
2542
2543 # examples
2544 avio_reading="avformat avcodec avutil"
2545 avcodec_example_deps="avcodec avutil"
2546 demuxing_decoding_example_deps="avcodec avformat avutil"
2547 filter_audio_example_deps="avfilter avutil"
2548 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2549 filtering_video_example_deps="avfilter avcodec avformat avutil"
2550 metadata_example_deps="avformat avutil"
2551 muxing_example_deps="avcodec avformat avutil swscale"
2552 remuxing_example_deps="avcodec avformat avutil"
2553 resampling_audio_example_deps="avutil swresample"
2554 scaling_video_example_deps="avutil swscale"
2555 transcode_aac_example_deps="avcodec avformat swresample"
2556 transcoding_example_deps="avfilter avcodec avformat avutil"
2557
2558 # libraries, in linking order
2559 avcodec_deps="avutil"
2560 avdevice_deps="avformat avcodec avutil"
2561 avfilter_deps="avutil"
2562 avformat_deps="avcodec avutil"
2563 avresample_deps="avutil"
2564 postproc_deps="avutil gpl"
2565 swresample_deps="avutil"
2566 swscale_deps="avutil"
2567
2568 # programs
2569 ffmpeg_deps="avcodec avfilter avformat swresample"
2570 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2571                null_filter
2572                setpts_filter trim_filter"
2573 ffplay_deps="avcodec avformat swscale swresample sdl"
2574 ffplay_libs='$sdl_libs'
2575 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2576 ffprobe_deps="avcodec avformat"
2577 ffserver_deps="avformat fork sarestart"
2578 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2579
2580 # documentation
2581 podpages_deps="perl"
2582 manpages_deps="perl pod2man"
2583 htmlpages_deps="perl texi2html"
2584 txtpages_deps="perl makeinfo"
2585 doc_deps_any="manpages htmlpages podpages txtpages"
2586
2587 # default parameters
2588
2589 logfile="config.log"
2590
2591 # installation paths
2592 prefix_default="/usr/local"
2593 bindir_default='${prefix}/bin'
2594 datadir_default='${prefix}/share/ffmpeg'
2595 docdir_default='${prefix}/share/doc/ffmpeg'
2596 incdir_default='${prefix}/include'
2597 libdir_default='${prefix}/lib'
2598 mandir_default='${prefix}/share/man'
2599 shlibdir_default="$libdir_default"
2600
2601 # toolchain
2602 ar_default="ar"
2603 cc_default="gcc"
2604 cxx_default="g++"
2605 host_cc_default="gcc"
2606 cp_f="cp -f"
2607 install="install"
2608 ln_s="ln -s -f"
2609 nm_default="nm -g"
2610 objformat="elf"
2611 pkg_config_default=pkg-config
2612 ranlib_default="ranlib"
2613 strip_default="strip"
2614 yasmexe_default="yasm"
2615 windres_default="windres"
2616
2617 nogas=":"
2618
2619 # OS
2620 target_os_default=$(tolower $(uname -s))
2621 host_os=$target_os_default
2622
2623 # machine
2624 if test "$target_os_default" = aix; then
2625     arch_default=$(uname -p)
2626 else
2627     arch_default=$(uname -m)
2628 fi
2629 cpu="generic"
2630
2631 # configurable options
2632 enable $PROGRAM_LIST
2633 enable $DOCUMENT_LIST
2634 enable $EXAMPLE_LIST
2635 enable $(filter_out avresample $LIBRARY_LIST)
2636 enable stripping
2637
2638 enable asm
2639 enable debug
2640 enable doc
2641 enable optimizations
2642 enable runtime_cpudetect
2643 enable safe_bitstream_reader
2644 enable static
2645 enable swscale_alpha
2646
2647 # Enable hwaccels by default.
2648 enable dxva2 vaapi vda vdpau xvmc
2649 enable xlib
2650
2651 # build settings
2652 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2653 LIBPREF="lib"
2654 LIBSUF=".a"
2655 FULLNAME='$(NAME)$(BUILDSUF)'
2656 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2657 SLIBPREF="lib"
2658 SLIBSUF=".so"
2659 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2660 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2661 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2662 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2663 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2664 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2665
2666 asflags_filter=echo
2667 cflags_filter=echo
2668 ldflags_filter=echo
2669
2670 AS_C='-c'
2671 AS_O='-o $@'
2672 CC_C='-c'
2673 CC_E='-E -o $@'
2674 CC_O='-o $@'
2675 CXX_C='-c'
2676 CXX_O='-o $@'
2677 LD_O='-o $@'
2678 LD_LIB='-l%'
2679 LD_PATH='-L'
2680 HOSTCC_C='-c'
2681 HOSTCC_E='-E -o $@'
2682 HOSTCC_O='-o $@'
2683 HOSTLD_O='-o $@'
2684
2685 host_libs='-lm'
2686 host_cflags_filter=echo
2687 host_ldflags_filter=echo
2688
2689 target_path='$(CURDIR)'
2690
2691 # since the object filename is not given with the -MM flag, the compiler
2692 # is only able to print the basename, and we must add the path ourselves
2693 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2694 DEPFLAGS='-MM'
2695
2696 # find source path
2697 if test -f configure; then
2698     source_path=.
2699 else
2700     source_path=$(cd $(dirname "$0"); pwd)
2701     echo "$source_path" | grep -q '[[:blank:]]' &&
2702         die "Out of tree builds are impossible with whitespace in source path."
2703     test -e "$source_path/config.h" &&
2704         die "Out of tree builds are impossible with config.h in source dir."
2705 fi
2706
2707 for v in "$@"; do
2708     r=${v#*=}
2709     l=${v%"$r"}
2710     r=$(sh_quote "$r")
2711     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2712 done
2713
2714 find_things(){
2715     thing=$1
2716     pattern=$2
2717     file=$source_path/$3
2718     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2719 }
2720
2721 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2722 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2723 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2724 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2725 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2726 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2727 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2728 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2729 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2730 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2731 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2732
2733 ALL_COMPONENTS="
2734     $BSF_LIST
2735     $DECODER_LIST
2736     $DEMUXER_LIST
2737     $ENCODER_LIST
2738     $FILTER_LIST
2739     $HWACCEL_LIST
2740     $INDEV_LIST
2741     $MUXER_LIST
2742     $OUTDEV_LIST
2743     $PARSER_LIST
2744     $PROTOCOL_LIST
2745 "
2746
2747 for n in $COMPONENT_LIST; do
2748     v=$(toupper ${n%s})_LIST
2749     eval enable \$$v
2750     eval ${n}_if_any="\$$v"
2751 done
2752
2753 enable $ARCH_EXT_LIST
2754
2755 die_unknown(){
2756     echo "Unknown option \"$1\"."
2757     echo "See $0 --help for available options."
2758     exit 1
2759 }
2760
2761 print_3_columns() {
2762     cat | tr ' ' '\n' | sort | pr -r -3 -t
2763 }
2764
2765 show_list() {
2766     suffix=_$1
2767     shift
2768     echo $* | sed s/$suffix//g | print_3_columns
2769     exit 0
2770 }
2771
2772 rand_list(){
2773     IFS=', '
2774     set -- $*
2775     unset IFS
2776     for thing; do
2777         comp=${thing%:*}
2778         prob=${thing#$comp}
2779         prob=${prob#:}
2780         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2781         echo "prob ${prob:-0.5}"
2782         printf '%s\n' $comp
2783     done
2784 }
2785
2786 do_random(){
2787     action=$1
2788     shift
2789     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2790     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2791 }
2792
2793 for opt do
2794     optval="${opt#*=}"
2795     case "$opt" in
2796         --extra-ldflags=*)
2797             add_ldflags $optval
2798         ;;
2799         --extra-libs=*)
2800             add_extralibs $optval
2801         ;;
2802         --disable-devices)
2803             disable $INDEV_LIST $OUTDEV_LIST
2804         ;;
2805         --enable-debug=*)
2806             debuglevel="$optval"
2807         ;;
2808         --disable-programs)
2809             disable $PROGRAM_LIST
2810         ;;
2811         --disable-everything)
2812             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2813         ;;
2814         --disable-all)
2815             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2816             disable $LIBRARY_LIST $PROGRAM_LIST doc
2817         ;;
2818         --enable-random|--disable-random)
2819             action=${opt%%-random}
2820             do_random ${action#--} $COMPONENT_LIST
2821         ;;
2822         --enable-random=*|--disable-random=*)
2823             action=${opt%%-random=*}
2824             do_random ${action#--} $optval
2825         ;;
2826         --enable-*=*|--disable-*=*)
2827             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2828             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2829             eval list=\$$(toupper $thing)_LIST
2830             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2831             list=$(filter "$name" $list)
2832             [ "$list" = "" ] && warn "Option $opt did not match anything"
2833             $action $list
2834         ;;
2835         --enable-?*|--disable-?*)
2836             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2837             if is_in $option $COMPONENT_LIST; then
2838                 test $action = disable && action=unset
2839                 eval $action \$$(toupper ${option%s})_LIST
2840             elif is_in $option $CMDLINE_SELECT; then
2841                 $action $option
2842             else
2843                 die_unknown $opt
2844             fi
2845         ;;
2846         --list-*)
2847             NAME="${opt#--list-}"
2848             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2849             NAME=${NAME%s}
2850             eval show_list $NAME \$$(toupper $NAME)_LIST
2851         ;;
2852         --help|-h) show_help
2853         ;;
2854         --fatal-warnings) enable fatal_warnings
2855         ;;
2856         *)
2857             optname="${opt%%=*}"
2858             optname="${optname#--}"
2859             optname=$(echo "$optname" | sed 's/-/_/g')
2860             if is_in $optname $CMDLINE_SET; then
2861                 eval $optname='$optval'
2862             elif is_in $optname $CMDLINE_APPEND; then
2863                 append $optname "$optval"
2864             else
2865                 die_unknown $opt
2866             fi
2867         ;;
2868     esac
2869 done
2870
2871 disabled logging && logfile=/dev/null
2872
2873 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2874 set >> $logfile
2875
2876 test -n "$cross_prefix" && enable cross_compile
2877
2878 if enabled cross_compile; then
2879     test -n "$arch" && test -n "$target_os" ||
2880         die "Must specify target arch and OS when cross-compiling"
2881 fi
2882
2883 ar_default="${cross_prefix}${ar_default}"
2884 cc_default="${cross_prefix}${cc_default}"
2885 cxx_default="${cross_prefix}${cxx_default}"
2886 nm_default="${cross_prefix}${nm_default}"
2887 pkg_config_default="${cross_prefix}${pkg_config_default}"
2888 ranlib_default="${cross_prefix}${ranlib_default}"
2889 strip_default="${cross_prefix}${strip_default}"
2890 windres_default="${cross_prefix}${windres_default}"
2891
2892 sysinclude_default="${sysroot}/usr/include"
2893
2894 test -n "$valgrind" && toolchain="valgrind-memcheck"
2895
2896 case "$toolchain" in
2897     clang-asan)
2898         cc_default="clang"
2899         add_cflags  -fsanitize=address
2900         add_ldflags -fsanitize=address
2901     ;;
2902     clang-tsan)
2903         cc_default="clang"
2904         add_cflags  -fsanitize=thread -pie
2905         add_ldflags -fsanitize=thread -pie
2906     ;;
2907     clang-usan)
2908         cc_default="clang"
2909         add_cflags  -fsanitize=undefined
2910         add_ldflags -fsanitize=undefined
2911     ;;
2912     gcc-asan)
2913         cc_default="gcc"
2914         add_cflags  -fsanitize=address
2915         add_ldflags -fsanitize=address
2916     ;;
2917     gcc-tsan)
2918         cc_default="gcc"
2919         add_cflags  -fsanitize=thread -pie -fPIC
2920         add_ldflags -fsanitize=thread -pie -fPIC
2921     ;;
2922     gcc-usan)
2923         cc_default="gcc"
2924         add_cflags  -fsanitize=undefined
2925         add_ldflags -fsanitize=undefined
2926     ;;
2927     valgrind-massif)
2928         target_exec_default=${valgrind:-"valgrind"}
2929         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"
2930     ;;
2931     valgrind-memcheck)
2932         target_exec_default=${valgrind:-"valgrind"}
2933         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2934     ;;
2935     msvc)
2936         # Check whether the current MSVC version needs the C99 converter.
2937         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2938         # support enough of C99 to build ffmpeg. Default to the new
2939         # behaviour if the regexp was unable to match anything, since this
2940         # successfully parses the version number of existing supported
2941         # versions that require the converter (MSVC 2010 and 2012).
2942         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2943         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2944             cc_default="cl"
2945         else
2946             cc_default="c99wrap cl"
2947         fi
2948         ld_default="link"
2949         nm_default="dumpbin -symbols"
2950         ar_default="lib"
2951         target_os_default="win32"
2952         # Use a relative path for TMPDIR. This makes sure all the
2953         # ffconf temp files are written with a relative path, avoiding
2954         # issues with msys/win32 path conversion for MSVC parameters
2955         # such as -Fo<file> or -out:<file>.
2956         TMPDIR=.
2957     ;;
2958     icl)
2959         cc_default="icl"
2960         ld_default="xilink"
2961         nm_default="dumpbin -symbols"
2962         ar_default="xilib"
2963         target_os_default="win32"
2964         TMPDIR=.
2965     ;;
2966     gcov)
2967         add_cflags  -fprofile-arcs -ftest-coverage
2968         add_ldflags -fprofile-arcs -ftest-coverage
2969     ;;
2970     hardened)
2971         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2972         add_ldflags -Wl,-z,relro -Wl,-z,now
2973     ;;
2974     ?*)
2975         die "Unknown toolchain $toolchain"
2976     ;;
2977 esac
2978
2979 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2980 enabled cross_compile || host_cc_default=$cc
2981 set_default host_cc
2982
2983 if ! $pkg_config --version >/dev/null 2>&1; then
2984     warn "$pkg_config not found, library detection may fail."
2985     pkg_config=false
2986 fi
2987
2988 exesuf() {
2989     case $1 in
2990         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2991     esac
2992 }
2993
2994 EXESUF=$(exesuf $target_os)
2995 HOSTEXESUF=$(exesuf $host_os)
2996
2997 # set temporary file name
2998 : ${TMPDIR:=$TEMPDIR}
2999 : ${TMPDIR:=$TMP}
3000 : ${TMPDIR:=/tmp}
3001
3002 if [ -n "$tempprefix" ] ; then
3003     mktemp(){
3004         echo $tempprefix.${HOSTNAME}.${UID}
3005     }
3006 elif ! check_cmd mktemp -u XXXXXX; then
3007     # simple replacement for missing mktemp
3008     # NOT SAFE FOR GENERAL USE
3009     mktemp(){
3010         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3011     }
3012 fi
3013
3014 tmpfile(){
3015     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3016         (set -C; exec > $tmp) 2>/dev/null ||
3017         die "Unable to create temporary file in $TMPDIR."
3018     append TMPFILES $tmp
3019     eval $1=$tmp
3020 }
3021
3022 trap 'rm -f -- $TMPFILES' EXIT
3023
3024 tmpfile TMPASM .asm
3025 tmpfile TMPC   .c
3026 tmpfile TMPCPP .cpp
3027 tmpfile TMPE   $EXESUF
3028 tmpfile TMPH   .h
3029 tmpfile TMPM   .m
3030 tmpfile TMPO   .o
3031 tmpfile TMPS   .S
3032 tmpfile TMPSH  .sh
3033 tmpfile TMPV   .ver
3034
3035 unset -f mktemp
3036
3037 chmod +x $TMPE
3038
3039 # make sure we can execute files in $TMPDIR
3040 cat > $TMPSH 2>> $logfile <<EOF
3041 #! /bin/sh
3042 EOF
3043 chmod +x $TMPSH >> $logfile 2>&1
3044 if ! $TMPSH >> $logfile 2>&1; then
3045     cat <<EOF
3046 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3047 variable to another directory and make sure that it is not mounted noexec.
3048 EOF
3049     die "Sanity test failed."
3050 fi
3051
3052 ccc_flags(){
3053     for flag; do
3054         case $flag in
3055             -std=c99)           echo -c99                       ;;
3056             -mcpu=*)            echo -arch ${flag#*=}           ;;
3057             -mieee)             echo -ieee                      ;;
3058             -O*|-fast)          echo $flag                      ;;
3059             -fno-math-errno)    echo -assume nomath_errno       ;;
3060             -g)                 echo -g3                        ;;
3061             -Wall)              echo -msg_enable level2         ;;
3062             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3063             -Wl,*)              echo $flag                      ;;
3064             -f*|-W*)                                            ;;
3065             *)                  echo $flag                      ;;
3066         esac
3067    done
3068 }
3069
3070 cparser_flags(){
3071     for flag; do
3072         case $flag in
3073             -Wno-switch)             echo -Wno-switch-enum ;;
3074             -Wno-format-zero-length) ;;
3075             -Wdisabled-optimization) ;;
3076             -Wno-pointer-sign)       echo -Wno-other ;;
3077             *)                       echo $flag ;;
3078         esac
3079     done
3080 }
3081
3082 msvc_common_flags(){
3083     for flag; do
3084         case $flag in
3085             # In addition to specifying certain flags under the compiler
3086             # specific filters, they must be specified here as well or else the
3087             # generic catch all at the bottom will print the original flag.
3088             -Wall)                ;;
3089             -std=c99)             ;;
3090             # Common flags
3091             -fomit-frame-pointer) ;;
3092             -g)                   echo -Z7 ;;
3093             -fno-math-errno)      ;;
3094             -fno-common)          ;;
3095             -fno-signed-zeros)    ;;
3096             -fPIC)                ;;
3097             -mthumb)              ;;
3098             -march=*)             ;;
3099             -lz)                  echo zlib.lib ;;
3100             -lavifil32)           echo vfw32.lib ;;
3101             -lavicap32)           echo vfw32.lib user32.lib ;;
3102             -l*)                  echo ${flag#-l}.lib ;;
3103             *)                    echo $flag ;;
3104         esac
3105     done
3106 }
3107
3108 msvc_flags(){
3109     msvc_common_flags "$@"
3110     for flag; do
3111         case $flag in
3112             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3113                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3114                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3115                                        -wd4554 \
3116                                        -wd4273 ;;
3117         esac
3118     done
3119 }
3120
3121 icl_flags(){
3122     msvc_common_flags "$@"
3123     for flag; do
3124         case $flag in
3125             # Despite what Intel's documentation says -Wall, which is supported
3126             # on Windows, does enable remarks so disable them here.
3127             -Wall)                echo $flag -Qdiag-disable:remark ;;
3128             -std=c99)             echo -Qstd=c99 ;;
3129         esac
3130     done
3131 }
3132
3133 icc_flags(){
3134     for flag; do
3135         case $flag in
3136             -flto)                echo -ipo ;;
3137             *)                    echo $flag ;;
3138         esac
3139     done
3140 }
3141
3142 pgi_flags(){
3143     for flag; do
3144         case $flag in
3145             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3146             -fomit-frame-pointer) echo -Mnoframe ;;
3147             -g)                   echo -gopt ;;
3148             *)                    echo $flag ;;
3149         esac
3150     done
3151 }
3152
3153 suncc_flags(){
3154     for flag; do
3155         case $flag in
3156             -march=*|-mcpu=*)
3157                 case "${flag#*=}" in
3158                     native)                   echo -xtarget=native       ;;
3159                     v9|niagara)               echo -xarch=sparc          ;;
3160                     ultrasparc)               echo -xarch=sparcvis       ;;
3161                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3162                     i586|pentium)             echo -xchip=pentium        ;;
3163                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3164                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3165                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3166                     pentium4*)          echo -xtarget=pentium4           ;;
3167                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3168                     *-sse3)             echo -xarch=sse3                 ;;
3169                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3170                     bonnell)                   echo -xarch=ssse3         ;;
3171                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3172                     westmere)                  echo -xtarget=westmere    ;;
3173                     silvermont)                echo -xarch=sse4_2        ;;
3174                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3175                     core-avx*|ivybridge|haswell|broadwell)
3176                                                echo -xarch=avx           ;;
3177                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3178                     btver1)                    echo -xarch=amdsse4a      ;;
3179                     btver2|bdver*)             echo -xarch=avx           ;;
3180                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3181                     k8|opteron|athlon64|athlon-fx)
3182                                                echo -xarch=sse2a         ;;
3183                     athlon*)                   echo -xarch=pentium_proa  ;;
3184                 esac
3185                 ;;
3186             -std=c99)             echo -xc99              ;;
3187             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3188             -fPIC)                echo -KPIC -xcode=pic32 ;;
3189             -W*,*)                echo $flag              ;;
3190             -f*-*|-W*|-mimpure-text)                      ;;
3191             -shared)              echo -G                 ;;
3192             *)                    echo $flag              ;;
3193         esac
3194     done
3195 }
3196
3197 tms470_flags(){
3198     for flag; do
3199         case $flag in
3200             -march=*|-mcpu=*)
3201                 case "${flag#*=}" in
3202                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3203                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3204                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3205                     armv6*|arm11*)          echo -mv=6   ;;
3206                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3207                                             echo -mv=5e  ;;
3208                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3209                 esac
3210                 ;;
3211             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3212             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3213             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3214             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3215             -msoft-float)   echo --float_support=vfplib       ;;
3216             -O[0-3]|-mf=*)  echo $flag                        ;;
3217             -g)             echo -g -mn                       ;;
3218             -pds=*)         echo $flag                        ;;
3219             -D*|-I*)        echo $flag                        ;;
3220             --gcc|--abi=*)  echo $flag                        ;;
3221             -me)            echo $flag                        ;;
3222         esac
3223     done
3224 }
3225
3226 probe_cc(){
3227     pfx=$1
3228     _cc=$2
3229
3230     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3231     unset _ld_o _ldflags _ld_lib _ld_path
3232     unset _depflags _DEPCMD _DEPFLAGS
3233     _flags_filter=echo
3234
3235     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3236         true # no-op to avoid reading stdin in following checks
3237     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3238         _type=llvm_gcc
3239         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3240         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3242         _cflags_speed='-O3'
3243         _cflags_size='-Os'
3244     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3245         _type=gcc
3246         gcc_version=$($_cc --version | head -n1)
3247         gcc_basever=$($_cc -dumpversion)
3248         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3249         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3250         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3251         if ! $_cc -dumpversion | grep -q '^2\.'; then
3252             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3253         fi
3254         _cflags_speed='-O3'
3255         _cflags_size='-Os'
3256     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3257         _type=icc
3258         _ident=$($_cc --version | head -n1)
3259         _depflags='-MMD'
3260         _cflags_speed='-O3'
3261         _cflags_size='-Os'
3262         _cflags_noopt='-O1'
3263         _flags_filter=icc_flags
3264     elif $_cc -v 2>&1 | grep -q xlc; then
3265         _type=xlc
3266         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3267         _cflags_speed='-O5'
3268         _cflags_size='-O5 -qcompact'
3269     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3270         _type=ccc
3271         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3272         _DEPFLAGS='-M'
3273         _cflags_speed='-fast'
3274         _cflags_size='-O1'
3275         _flags_filter=ccc_flags
3276     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3277         test -d "$sysroot" || die "No valid sysroot specified."
3278         _type=armcc
3279         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3280         armcc_conf="$PWD/armcc.conf"
3281         $_cc --arm_linux_configure                 \
3282              --arm_linux_config_file="$armcc_conf" \
3283              --configure_sysroot="$sysroot"        \
3284              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3285              die "Error creating armcc configuration file."
3286         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3287         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3288         as_default="${cross_prefix}gcc"
3289         _depflags='-MMD'
3290         _cflags_speed='-O3'
3291         _cflags_size='-Os'
3292     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3293         _type=tms470
3294         _ident=$($_cc -version | head -n1 | tr -s ' ')
3295         _flags='--gcc --abi=eabi -me'
3296         _cc_e='-ppl -fe=$@'
3297         _cc_o='-fe=$@'
3298         _depflags='-ppa -ppd=$(@:.o=.d)'
3299         _cflags_speed='-O3 -mf=5'
3300         _cflags_size='-O3 -mf=2'
3301         _flags_filter=tms470_flags
3302     elif $_cc -v 2>&1 | grep -q clang; then
3303         _type=clang
3304         _ident=$($_cc --version | head -n1)
3305         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc -V 2>&1 | grep -q Sun; then
3309         _type=suncc
3310         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3311         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3312         _DEPFLAGS='-xM1 -xc99'
3313         _ldflags='-std=c99'
3314         _cflags_speed='-O5'
3315         _cflags_size='-O5 -xspace'
3316         _flags_filter=suncc_flags
3317     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3318         _type=pathscale
3319         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3320         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         _cflags_speed='-O2'
3322         _cflags_size='-Os'
3323         _flags_filter='filter_out -Wdisabled-optimization'
3324     elif $_cc -v 2>&1 | grep -q Open64; then
3325         _type=open64
3326         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3327         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3328         _cflags_speed='-O2'
3329         _cflags_size='-Os'
3330         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3331     elif $_cc -V 2>&1 | grep -q Portland; then
3332         _type=pgi
3333         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3334         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3335         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3336         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3337         _cflags_noopt="-O"
3338         _flags_filter=pgi_flags
3339     elif $_cc 2>&1 | grep -q Microsoft; then
3340         _type=msvc
3341         _ident=$($cc 2>&1 | head -n1)
3342         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3343         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3344         _cflags_speed="-O2"
3345         _cflags_size="-O1"
3346         if $_cc 2>&1 | grep -q Linker; then
3347             _ld_o='-out:$@'
3348         else
3349             _ld_o='-Fe$@'
3350         fi
3351         _cc_o='-Fo$@'
3352         _cc_e='-P -Fi$@'
3353         _flags_filter=msvc_flags
3354         _ld_lib='lib%.a'
3355         _ld_path='-libpath:'
3356         _flags='-nologo'
3357         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3358         if [ $pfx = hostcc ]; then
3359             append _cflags -Dsnprintf=_snprintf
3360         fi
3361         disable stripping
3362     elif $_cc 2>&1 | grep -q Intel; then
3363         _type=icl
3364         _ident=$($cc 2>&1 | head -n1)
3365         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3366         # Not only is O3 broken on 13.x+ but it is slower on all previous
3367         # versions (tested) as well.
3368         _cflags_speed="-O2"
3369         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3370         if $_cc 2>&1 | grep -q Linker; then
3371             _ld_o='-out:$@'
3372         else
3373             _ld_o='-Fe$@'
3374         fi
3375         _cc_o='-Fo$@'
3376         _cc_e='-P'
3377         _flags_filter=icl_flags
3378         _ld_lib='lib%.a'
3379         _ld_path='-libpath:'
3380         # -Qdiag-error to make icl error when seeing certain unknown arguments
3381         _flags='-nologo -Qdiag-error:4044,10157'
3382         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3383         # with MSVC which enables it by default.
3384         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3385         if [ $pfx = hostcc ]; then
3386             append _cflags -Dsnprintf=_snprintf
3387         fi
3388     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3389         _type=cparser
3390         _ident=$($_cc --version | head -n1)
3391         _depflags='-MMD'
3392         _cflags_speed='-O4'
3393         _cflags_size='-O2'
3394         _flags_filter=cparser_flags
3395     fi
3396
3397     eval ${pfx}_type=\$_type
3398     eval ${pfx}_ident=\$_ident
3399 }
3400
3401 set_ccvars(){
3402     eval ${1}_C=\${_cc_c-\${${1}_C}}
3403     eval ${1}_E=\${_cc_e-\${${1}_E}}
3404     eval ${1}_O=\${_cc_o-\${${1}_O}}
3405
3406     if [ -n "$_depflags" ]; then
3407         eval ${1}_DEPFLAGS=\$_depflags
3408     else
3409         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3410         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3411         eval DEP${1}FLAGS=\$_flags
3412     fi
3413 }
3414
3415 probe_cc cc "$cc"
3416 cflags_filter=$_flags_filter
3417 cflags_speed=$_cflags_speed
3418 cflags_size=$_cflags_size
3419 cflags_noopt=$_cflags_noopt
3420 add_cflags $_flags $_cflags
3421 cc_ldflags=$_ldflags
3422 set_ccvars CC
3423
3424 probe_cc hostcc "$host_cc"
3425 host_cflags_filter=$_flags_filter
3426 add_host_cflags  $_flags $_cflags
3427 set_ccvars HOSTCC
3428
3429 test -n "$cc_type" && enable $cc_type ||
3430     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3431
3432 : ${as_default:=$cc}
3433 : ${dep_cc_default:=$cc}
3434 : ${ld_default:=$cc}
3435 : ${host_ld_default:=$host_cc}
3436 set_default ar as dep_cc ld host_ld windres
3437
3438 probe_cc as "$as"
3439 asflags_filter=$_flags_filter
3440 add_asflags $_flags $_cflags
3441 set_ccvars AS
3442
3443 probe_cc ld "$ld"
3444 ldflags_filter=$_flags_filter
3445 add_ldflags $_flags $_ldflags
3446 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3447 LD_O=${_ld_o-$LD_O}
3448 LD_LIB=${_ld_lib-$LD_LIB}
3449 LD_PATH=${_ld_path-$LD_PATH}
3450
3451 probe_cc hostld "$host_ld"
3452 host_ldflags_filter=$_flags_filter
3453 add_host_ldflags $_flags $_ldflags
3454 HOSTLD_O=${_ld_o-$HOSTLD_O}
3455
3456 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3457     probe_cc depcc "$dep_cc"
3458     CCDEP=${_DEPCMD:-$DEPCMD}
3459     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3460     DEPCCFLAGS=$_flags
3461 fi
3462
3463 if $ar 2>&1 | grep -q Microsoft; then
3464     arflags="-nologo"
3465     ar_o='-out:$@'
3466 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3467     arflags="rq"
3468     ar_o='$@'
3469 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3470     arflags='-Xany -r -c'
3471     ar_o='$@'
3472 else
3473     arflags="rc"
3474     ar_o='$@'
3475 fi
3476
3477 add_cflags $extra_cflags
3478 add_cxxflags $extra_cxxflags
3479 add_asflags $extra_cflags
3480
3481 if test -n "$sysroot"; then
3482     case "$cc_type" in
3483         gcc|llvm_gcc|clang)
3484             add_cppflags --sysroot="$sysroot"
3485             add_ldflags --sysroot="$sysroot"
3486 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3487             add_cppflags -isysroot "$sysroot"
3488             add_ldflags -isysroot "$sysroot"
3489         ;;
3490         tms470)
3491             add_cppflags -I"$sysinclude"
3492             add_ldflags  --sysroot="$sysroot"
3493         ;;
3494     esac
3495 fi
3496
3497 if test "$cpu" = host; then
3498     enabled cross_compile &&
3499         die "--cpu=host makes no sense when cross-compiling."
3500
3501     case "$cc_type" in
3502         gcc|llvm_gcc)
3503             check_native(){
3504                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3505                 sed -n "/cc1.*$1=/{
3506                             s/.*$1=\\([^ ]*\\).*/\\1/
3507                             p
3508                             q
3509                         }" $TMPE
3510             }
3511             cpu=$(check_native -march || check_native -mcpu)
3512         ;;
3513     esac
3514
3515     test "${cpu:-host}" = host &&
3516         die "--cpu=host not supported with compiler $cc"
3517 fi
3518
3519 # Deal with common $arch aliases
3520 case "$arch" in
3521     aarch64|arm64)
3522         arch="aarch64"
3523     ;;
3524     arm*|iPad*|iPhone*)
3525         arch="arm"
3526     ;;
3527     mips*|IP*)
3528         arch="mips"
3529     ;;
3530     parisc*|hppa*)
3531         arch="parisc"
3532     ;;
3533     "Power Macintosh"|ppc*|powerpc*)
3534         arch="ppc"
3535     ;;
3536     s390|s390x)
3537         arch="s390"
3538     ;;
3539     sh4|sh)
3540         arch="sh4"
3541     ;;
3542     sun4u|sparc*)
3543         arch="sparc"
3544     ;;
3545     tilegx|tile-gx)
3546         arch="tilegx"
3547     ;;
3548     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3549         arch="x86"
3550     ;;
3551 esac
3552
3553 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3554 enable $arch
3555
3556 # Add processor-specific flags
3557 if enabled aarch64; then
3558
3559     case $cpu in
3560         armv*)
3561             cpuflags="-march=$cpu"
3562         ;;
3563         *)
3564             cpuflags="-mcpu=$cpu"
3565         ;;
3566     esac
3567
3568 elif enabled alpha; then
3569
3570     cpuflags="-mcpu=$cpu"
3571
3572 elif enabled arm; then
3573
3574     check_arm_arch() {
3575         check_cpp_condition stddef.h \
3576             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3577             $cpuflags
3578     }
3579
3580     probe_arm_arch() {
3581         if   check_arm_arch 4;        then echo armv4;
3582         elif check_arm_arch 4T;       then echo armv4t;
3583         elif check_arm_arch 5;        then echo armv5;
3584         elif check_arm_arch 5E;       then echo armv5e;
3585         elif check_arm_arch 5T;       then echo armv5t;
3586         elif check_arm_arch 5TE;      then echo armv5te;
3587         elif check_arm_arch 5TEJ;     then echo armv5te;
3588         elif check_arm_arch 6;        then echo armv6;
3589         elif check_arm_arch 6J;       then echo armv6j;
3590         elif check_arm_arch 6K;       then echo armv6k;
3591         elif check_arm_arch 6Z;       then echo armv6z;
3592         elif check_arm_arch 6ZK;      then echo armv6zk;
3593         elif check_arm_arch 6T2;      then echo armv6t2;
3594         elif check_arm_arch 7;        then echo armv7;
3595         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3596         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3597         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3598         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3599         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3600         fi
3601     }
3602
3603     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3604
3605     case $cpu in
3606         armv*)
3607             cpuflags="-march=$cpu"
3608             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3609         ;;
3610         *)
3611             cpuflags="-mcpu=$cpu"
3612             case $cpu in
3613                 cortex-a*)                               subarch=armv7a  ;;
3614                 cortex-r*)                               subarch=armv7r  ;;
3615                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3616                 arm11*)                                  subarch=armv6   ;;
3617                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3618                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3619                 *)                             subarch=$(probe_arm_arch) ;;
3620             esac
3621         ;;
3622     esac
3623
3624     case "$subarch" in
3625         armv5t*)    enable fast_clz                ;;
3626         armv[6-8]*)
3627             enable fast_clz
3628             disabled fast_unaligned || enable fast_unaligned
3629             ;;
3630     esac
3631
3632 elif enabled avr32; then
3633
3634     case $cpu in
3635         ap7[02]0[0-2])
3636             subarch="avr32_ap"
3637             cpuflags="-mpart=$cpu"
3638         ;;
3639         ap)
3640             subarch="avr32_ap"
3641             cpuflags="-march=$cpu"
3642         ;;
3643         uc3[ab]*)
3644             subarch="avr32_uc"
3645             cpuflags="-mcpu=$cpu"
3646         ;;
3647         uc)
3648             subarch="avr32_uc"
3649             cpuflags="-march=$cpu"
3650         ;;
3651     esac
3652
3653 elif enabled bfin; then
3654
3655     cpuflags="-mcpu=$cpu"
3656
3657 elif enabled mips; then
3658
3659     cpuflags="-march=$cpu"
3660
3661     case $cpu in
3662         24kc)
3663             disable mipsfpu
3664             disable mipsdspr1
3665             disable mipsdspr2
3666         ;;
3667         24kf*)
3668             disable mipsdspr1
3669             disable mipsdspr2
3670         ;;
3671         24kec|34kc|1004kc)
3672             disable mipsfpu
3673             disable mipsdspr2
3674         ;;
3675         24kef*|34kf*|1004kf*)
3676             disable mipsdspr2
3677         ;;
3678         74kc)
3679             disable mipsfpu
3680         ;;
3681     esac
3682
3683 elif enabled ppc; then
3684
3685     disable ldbrx
3686
3687     case $(tolower $cpu) in
3688         601|ppc601|powerpc601)
3689             cpuflags="-mcpu=601"
3690             disable altivec
3691         ;;
3692         603*|ppc603*|powerpc603*)
3693             cpuflags="-mcpu=603"
3694             disable altivec
3695         ;;
3696         604*|ppc604*|powerpc604*)
3697             cpuflags="-mcpu=604"
3698             disable altivec
3699         ;;
3700         g3|75*|ppc75*|powerpc75*)
3701             cpuflags="-mcpu=750"
3702             disable altivec
3703         ;;
3704         g4|745*|ppc745*|powerpc745*)
3705             cpuflags="-mcpu=7450"
3706         ;;
3707         74*|ppc74*|powerpc74*)
3708             cpuflags="-mcpu=7400"
3709         ;;
3710         g5|970|ppc970|powerpc970)
3711             cpuflags="-mcpu=970"
3712         ;;
3713         power[3-7]*)
3714             cpuflags="-mcpu=$cpu"
3715         ;;
3716         cell)
3717             cpuflags="-mcpu=cell"
3718             enable ldbrx
3719         ;;
3720         e500mc)
3721             cpuflags="-mcpu=e500mc"
3722             disable altivec
3723         ;;
3724         e500v2)
3725             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3726             disable altivec
3727             disable dcbzl
3728         ;;
3729         e500)
3730             cpuflags="-mcpu=8540 -mhard-float"
3731             disable altivec
3732             disable dcbzl
3733         ;;
3734     esac
3735
3736 elif enabled sparc; then
3737
3738     case $cpu in
3739         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3740             cpuflags="-mcpu=$cpu"
3741         ;;
3742         ultrasparc*|niagara[234])
3743             cpuflags="-mcpu=$cpu"
3744         ;;
3745     esac
3746
3747 elif enabled x86; then
3748
3749     case $cpu in
3750         i[345]86|pentium)
3751             cpuflags="-march=$cpu"
3752             disable mmx
3753         ;;
3754         # targets that do NOT support nopl and conditional mov (cmov)
3755         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3756             cpuflags="-march=$cpu"
3757             disable i686
3758         ;;
3759         # targets that do support nopl and conditional mov (cmov)
3760         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3761         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3762             cpuflags="-march=$cpu"
3763             enable i686
3764             enable fast_cmov
3765         ;;
3766         # targets that do support conditional mov but on which it's slow
3767         pentium4|pentium4m|prescott|nocona)
3768             cpuflags="-march=$cpu"
3769             enable i686
3770             disable fast_cmov
3771         ;;
3772     esac
3773
3774 fi
3775
3776 if [ "$cpu" != generic ]; then
3777     add_cflags  $cpuflags
3778     add_asflags $cpuflags
3779 fi
3780
3781 # compiler sanity check
3782 check_exec <<EOF
3783 int main(void){ return 0; }
3784 EOF
3785 if test "$?" != 0; then
3786     echo "$cc is unable to create an executable file."
3787     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3788         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3789         echo "Only do this if you know what cross compiling means."
3790     fi
3791     die "C compiler test failed."
3792 fi
3793
3794 add_cppflags -D_ISOC99_SOURCE
3795 add_cxxflags -D__STDC_CONSTANT_MACROS
3796 check_cflags -std=c99
3797 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3798 #include <stdlib.h>
3799 EOF
3800 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3801 #include <stdlib.h>
3802 EOF
3803
3804 add_host_cppflags -D_ISOC99_SOURCE
3805 check_host_cflags -std=c99
3806 check_host_cflags -Wall
3807 check_host_cflags -O3
3808
3809 check_64bit(){
3810     arch32=$1
3811     arch64=$2
3812     expr=$3
3813     check_code cc "" "int test[2*($expr) - 1]" &&
3814         subarch=$arch64 || subarch=$arch32
3815 }
3816
3817 case "$arch" in
3818     aarch64|alpha|ia64)
3819         spic=$shared
3820     ;;
3821     mips)
3822         check_64bit mips mips64 '_MIPS_SIM > 1'
3823         spic=$shared
3824     ;;
3825     parisc)
3826         check_64bit parisc parisc64 'sizeof(void *) > 4'
3827         spic=$shared
3828     ;;
3829     ppc)
3830         check_64bit ppc ppc64 'sizeof(void *) > 4'
3831         spic=$shared
3832     ;;
3833     s390)
3834         check_64bit s390 s390x 'sizeof(void *) > 4'
3835         spic=$shared
3836     ;;
3837     sparc)
3838         check_64bit sparc sparc64 'sizeof(void *) > 4'
3839         spic=$shared
3840     ;;
3841     x86)
3842         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3843         if test "$subarch" = "x86_64"; then
3844             spic=$shared
3845         fi
3846     ;;
3847     ppc)
3848         check_cc <<EOF && subarch="ppc64"
3849         int test[(int)sizeof(char*) - 7];
3850 EOF
3851     ;;
3852 esac
3853
3854 enable $subarch
3855 enabled spic && enable_weak pic
3856
3857 # OS specific
3858 case $target_os in
3859     aix)
3860         SHFLAGS=-shared
3861         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3862         enabled shared && add_ldflags -Wl,-brtl
3863         ;;
3864     haiku)
3865         prefix_default="/boot/common"
3866         network_extralibs="-lnetwork"
3867         host_libs=
3868         ;;
3869     sunos)
3870         SHFLAGS='-shared -Wl,-h,$$(@F)'
3871         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3872         network_extralibs="-lsocket -lnsl"
3873         # When using suncc to build, the Solaris linker will mark
3874         # an executable with each instruction set encountered by
3875         # the Solaris assembler.  As our libraries contain their own
3876         # guards for processor-specific code, instead suppress
3877         # generation of the HWCAPS ELF section on Solaris x86 only.
3878         enabled_all suncc x86 &&
3879             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3880             add_ldflags -Wl,-M,mapfile
3881         nm_default='nm -P -g'
3882         ;;
3883     netbsd)
3884         disable symver
3885         oss_indev_extralibs="-lossaudio"
3886         oss_outdev_extralibs="-lossaudio"
3887         enabled gcc || check_ldflags -Wl,-zmuldefs
3888         ;;
3889     openbsd|bitrig)
3890         disable symver
3891         SHFLAGS='-shared'
3892         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3893         SLIB_INSTALL_LINKS=
3894         oss_indev_extralibs="-lossaudio"
3895         oss_outdev_extralibs="-lossaudio"
3896         ;;
3897     dragonfly)
3898         disable symver
3899         ;;
3900     freebsd)
3901         ;;
3902     bsd/os)
3903         add_extralibs -lpoll -lgnugetopt
3904         strip="strip -d"
3905         ;;
3906     darwin)
3907         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3908         enabled ppc && add_asflags -force_cpusubtype_ALL
3909         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3910         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3911         strip="${strip} -x"
3912         add_ldflags -Wl,-dynamic,-search_paths_first
3913         SLIBSUF=".dylib"
3914         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3915         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3916         objformat="macho"
3917         enabled x86_64 && objformat="macho64"
3918         enabled_any pic shared ||
3919             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3920         ;;
3921     mingw32*)
3922         if test $target_os = "mingw32ce"; then
3923             disable network
3924         else
3925             target_os=mingw32
3926         fi
3927         LIBTARGET=i386
3928         if enabled x86_64; then
3929             LIBTARGET="i386:x86-64"
3930         elif enabled arm; then
3931             LIBTARGET=arm-wince
3932         fi
3933         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3934         check_ldflags -Wl,--nxcompat
3935         check_ldflags -Wl,--dynamicbase
3936         shlibdir_default="$bindir_default"
3937         SLIBPREF=""
3938         SLIBSUF=".dll"
3939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3941         dlltool="${cross_prefix}dlltool"
3942         if check_cmd lib.exe -list; then
3943             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3944             if enabled x86_64; then
3945                 LIBTARGET=x64
3946             fi
3947         elif check_cmd $dlltool --version; then
3948             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3949         fi
3950         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3951         SLIB_INSTALL_LINKS=
3952         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3953         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3954         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3955         objformat="win32"
3956         ranlib=:
3957         enable dos_paths
3958         ;;
3959     win32|win64)
3960         disable symver
3961         if enabled shared; then
3962             # Link to the import library instead of the normal static library
3963             # for shared libs.
3964             LD_LIB='%.lib'
3965             # Cannot build both shared and static libs with MSVC or icl.
3966             disable static
3967         fi
3968         shlibdir_default="$bindir_default"
3969         SLIBPREF=""
3970         SLIBSUF=".dll"
3971         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3972         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3973         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3974         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3975         SLIB_INSTALL_LINKS=
3976         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3977         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3978         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3979         objformat="win32"
3980         ranlib=:
3981         enable dos_paths
3982         ;;
3983     cygwin*)
3984         target_os=cygwin
3985         shlibdir_default="$bindir_default"
3986         SLIBPREF="cyg"
3987         SLIBSUF=".dll"
3988         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3989         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3990         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3991         SLIB_INSTALL_LINKS=
3992         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3993         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3994         objformat="win32"
3995         enable dos_paths
3996         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3997         ;;
3998     *-dos|freedos|opendos)
3999         network_extralibs="-lsocket"
4000         objformat="coff"
4001         enable dos_paths
4002         add_cppflags -U__STRICT_ANSI__
4003         ;;
4004     linux)
4005         enable dv1394
4006         ;;
4007     irix*)
4008         target_os=irix
4009         ranlib="echo ignoring ranlib"
4010         ;;
4011     os/2*)
4012         strip="lxlite -CS"
4013         ln_s="cp -f"
4014         objformat="aout"
4015         add_cppflags -D_GNU_SOURCE
4016         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4017         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4018         LIBSUF="_s.a"
4019         SLIBPREF=""
4020         SLIBSUF=".dll"
4021         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4022         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4023         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4024             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4025             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4026             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4027             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4028             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4029         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4030             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4031         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4032         enable dos_paths
4033         enable_weak os2threads
4034         ;;
4035     gnu/kfreebsd)
4036         add_cppflags -D_BSD_SOURCE
4037         ;;
4038     gnu)
4039         ;;
4040     qnx)
4041         add_cppflags -D_QNX_SOURCE
4042         network_extralibs="-lsocket"
4043         ;;
4044     symbian)
4045         SLIBSUF=".dll"
4046         enable dos_paths
4047         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4048         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4049         add_ldflags -Wl,--target1-abs,--no-undefined \
4050                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4051                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4052         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4053                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4054                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4055         ;;
4056     osf1)
4057         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4058         ;;
4059     minix)
4060         ;;
4061     plan9)
4062         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4063                      -D_REENTRANT_SOURCE        \
4064                      -D_RESEARCH_SOURCE         \
4065                      -DFD_SETSIZE=96            \
4066                      -DHAVE_SOCK_OPTS
4067         add_compat strtod.o strtod=avpriv_strtod
4068         network_extralibs='-lbsd'
4069         exeobjs=compat/plan9/main.o
4070         disable ffserver
4071         cp_f='cp'
4072         ;;
4073     none)
4074         ;;
4075     *)
4076         die "Unknown OS '$target_os'."
4077         ;;
4078 esac
4079
4080 # determine libc flavour
4081
4082 probe_libc(){
4083     pfx=$1
4084     pfx_no_=${pfx%_}
4085     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4086     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4087         eval ${pfx}libc_type=uclibc
4088         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4089     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4090         eval ${pfx}libc_type=glibc
4091         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4092     # MinGW headers can be installed on Cygwin, so check for newlib first.
4093     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4094         eval ${pfx}libc_type=newlib
4095         add_${pfx}cppflags -U__STRICT_ANSI__
4096     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4097     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4098         eval ${pfx}libc_type=mingw64
4099         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4100             add_compat msvcrt/snprintf.o
4101             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4102         fi
4103         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4104         eval test \$${pfx_no_}cc_type = "gcc" &&
4105             add_${pfx}cppflags -D__printf__=__gnu_printf__
4106     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4107          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4108         eval ${pfx}libc_type=mingw32
4109         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4110             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4111             die "ERROR: MinGW32 runtime version must be >= 3.15."
4112         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4113         eval test \$${pfx_no_}cc_type = "gcc" &&
4114             add_${pfx}cppflags -D__printf__=__gnu_printf__
4115     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4116         eval ${pfx}libc_type=msvcrt
4117         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4118         # 0x601 by default unless something else is set by the user.
4119         # This can easily lead to us detecting functions only present
4120         # in such new versions and producing binaries requiring windows 7.0.
4121         # Therefore explicitly set the default to XP unless the user has
4122         # set something else on the command line.
4123         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4124             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4125     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4126         eval ${pfx}libc_type=klibc
4127     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4128         eval ${pfx}libc_type=bionic
4129     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4130         eval ${pfx}libc_type=solaris
4131         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4132     fi
4133 }
4134
4135 probe_libc
4136 test -n "$libc_type" && enable libc_$libc_type
4137 probe_libc host_
4138 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4139
4140 case $libc_type in
4141     bionic)
4142         add_compat strtod.o strtod=avpriv_strtod
4143         ;;
4144     msvcrt)
4145         add_compat strtod.o strtod=avpriv_strtod
4146         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4147                                      _snprintf=avpriv_snprintf  \
4148                                      vsnprintf=avpriv_vsnprintf
4149         ;;
4150 esac
4151
4152 # hacks for compiler/libc/os combinations
4153
4154 if enabled_all tms470 libc_glibc; then
4155     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4156     add_cppflags -D__USER_LABEL_PREFIX__=
4157     add_cppflags -D__builtin_memset=memset
4158     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4159     add_cflags   -pds=48    # incompatible redefinition of macro
4160 fi
4161
4162 if enabled_all ccc libc_glibc; then
4163     add_ldflags -Wl,-z,now  # calls to libots crash without this
4164 fi
4165
4166 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4167     add_cppflags '-I\$(SRC_PATH)/compat/float'
4168
4169 esc(){
4170     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4171 }
4172
4173 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4174
4175 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4176
4177 set_default $PATHS_LIST
4178 set_default nm
4179
4180 # we need to build at least one lib type
4181 if ! enabled_any static shared; then
4182     cat <<EOF
4183 At least one library type must be built.
4184 Specify --enable-static to build the static libraries or --enable-shared to
4185 build the shared libraries as well. To only build the shared libraries specify
4186 --disable-static in addition to --enable-shared.
4187 EOF
4188     exit 1;
4189 fi
4190
4191 die_license_disabled() {
4192     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4193 }
4194
4195 die_license_disabled_gpl() {
4196     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4197 }
4198
4199 die_license_disabled gpl frei0r
4200 die_license_disabled gpl libcdio
4201 die_license_disabled gpl libutvideo
4202 die_license_disabled gpl libvidstab
4203 die_license_disabled gpl libx264
4204 die_license_disabled gpl libx265
4205 die_license_disabled gpl libxavs
4206 die_license_disabled gpl libxvid
4207 die_license_disabled gpl libzvbi
4208 die_license_disabled gpl x11grab
4209
4210 die_license_disabled nonfree libaacplus
4211 die_license_disabled nonfree libfaac
4212 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4213 enabled gpl && die_license_disabled_gpl nonfree openssl
4214
4215 die_license_disabled version3 libopencore_amrnb
4216 die_license_disabled version3 libopencore_amrwb
4217 die_license_disabled version3 libvo_aacenc
4218 die_license_disabled version3 libvo_amrwbenc
4219
4220 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4221
4222 disabled optimizations || check_cflags -fomit-frame-pointer
4223
4224 enable_weak_pic() {
4225     disabled pic && return
4226     enable pic
4227     add_cppflags -DPIC
4228     case "$target_os" in
4229     mingw*|cygwin*)
4230         ;;
4231     *)
4232         add_cflags -fPIC
4233         ;;
4234     esac
4235     add_asflags  -fPIC
4236 }
4237
4238 enabled pic && enable_weak_pic
4239
4240 check_cc <<EOF || die "Symbol mangling check failed."
4241 int ff_extern;
4242 EOF
4243 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4244 extern_prefix=${sym%%ff_extern*}
4245
4246 check_cc <<EOF && enable_weak inline_asm
4247 void foo(void) { __asm__ volatile ("" ::); }
4248 EOF
4249
4250 _restrict=
4251 for restrict_keyword in restrict __restrict__ __restrict; do
4252     check_cc <<EOF && _restrict=$restrict_keyword && break
4253 void foo(char * $restrict_keyword p);
4254 EOF
4255 done
4256
4257 check_cc <<EOF && enable pragma_deprecated
4258 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4259 EOF
4260
4261 check_cc <<EOF && enable attribute_packed
4262 struct { int x; } __attribute__((packed)) x;
4263 EOF
4264
4265 check_cc <<EOF && enable attribute_may_alias
4266 union { int x; } __attribute__((may_alias)) x;
4267 EOF
4268
4269 check_cc <<EOF || die "endian test failed"
4270 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4271 EOF
4272 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4273
4274
4275 if enabled asm; then
4276     enabled     arm         && nogas=die
4277     enabled_all ppc altivec && nogas=warn
4278     as=${gas:=$as}
4279     check_as <<EOF && enable gnu_as || \
4280         $nogas "GNU assembler not found, install gas-preprocessor"
4281 .macro m n
4282 \n: .int 0
4283 .endm
4284 m x
4285 EOF
4286
4287     check_as <<EOF && enable as_func
4288 .func test
4289 .endfunc
4290 EOF
4291 fi
4292
4293 check_inline_asm inline_asm_labels '"1:\n"'
4294
4295 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4296
4297 if enabled aarch64; then
4298     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4299     # internal assembler in clang 3.3 does not support this instruction
4300     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4301     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4302
4303     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4304
4305 elif enabled alpha; then
4306
4307     check_cflags -mieee
4308
4309 elif enabled arm; then
4310
4311     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4312 float func(float a, float b){ return a+b; }
4313 EOF
4314
4315     enabled thumb && check_cflags -mthumb || check_cflags -marm
4316
4317     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4318         enable vfp_args
4319     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4320         case "${cross_prefix:-$cc}" in
4321             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4322             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4323 __asm__ (".eabi_attribute 28, 1");
4324 int main(void) { return 0; }
4325 EOF
4326         esac
4327         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4328     fi
4329
4330     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4331     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4332     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4333     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4334     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4335     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4336
4337     [ $target_os = linux ] ||
4338         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4339             $ARCH_EXT_LIST_ARM
4340
4341     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4342
4343     check_as <<EOF && enable as_dn_directive
4344 ra .dn d0.i16
4345 .unreq ra
4346 EOF
4347
4348     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4349
4350 elif enabled mips; then
4351
4352     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4353     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4354      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4355     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4356      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4357     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4358      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4359     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4360      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4361
4362 elif enabled parisc; then
4363
4364     if enabled gcc; then
4365         case $($cc -dumpversion) in
4366             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4367         esac
4368     fi
4369
4370 elif enabled ppc; then
4371
4372     enable local_aligned_8 local_aligned_16 local_aligned_32
4373
4374     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4375     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4376     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4377     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4378
4379     # AltiVec flags: The FSF version of GCC differs from the Apple version
4380     if enabled altivec; then
4381         check_cflags -maltivec -mabi=altivec &&
4382         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4383         check_cflags -faltivec
4384
4385         # check if our compiler supports Motorola AltiVec C API
4386         check_cc <<EOF || disable altivec
4387 $inc_altivec_h
4388 int main(void) {
4389     vector signed int v1 = (vector signed int) { 0 };
4390     vector signed int v2 = (vector signed int) { 1 };
4391     v1 = vec_add(v1, v2);
4392     return 0;
4393 }
4394 EOF
4395
4396         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4397     fi
4398
4399 elif enabled x86; then
4400
4401     check_builtin rdtsc    intrin.h   "__rdtsc()"
4402     check_builtin mm_empty mmintrin.h "_mm_empty()"
4403
4404     enable local_aligned_8 local_aligned_16 local_aligned_32
4405
4406     # check whether EBP is available on x86
4407     # As 'i' is stored on the stack, this program will crash
4408     # if the base pointer is used to access it because the
4409     # base pointer is cleared in the inline assembly code.
4410     check_exec_crash <<EOF && enable ebp_available
4411 volatile int i=0;
4412 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4413 return i;
4414 EOF
4415
4416     # check whether EBX is available on x86
4417     check_inline_asm ebx_available '""::"b"(0)' &&
4418         check_inline_asm ebx_available '"":::"%ebx"'
4419
4420     # check whether xmm clobbers are supported
4421     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4422
4423     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4424         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4425
4426     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4427     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4428     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4429     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4430
4431     if ! disabled_any asm mmx yasm; then
4432         if check_cmd $yasmexe --version; then
4433             enabled x86_64 && yasm_extra="-m amd64"
4434             yasm_debug="-g dwarf2"
4435         elif check_cmd nasm -v; then
4436             yasmexe=nasm
4437             yasm_debug="-g -F dwarf"
4438             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4439         fi
4440
4441         YASMFLAGS="-f $objformat $yasm_extra"
4442         enabled pic               && append YASMFLAGS "-DPIC"
4443         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4444         case "$objformat" in
4445             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4446         esac
4447
4448         check_yasm "movbe ecx, [5]" && enable yasm ||
4449             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4450         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4451         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4452         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4453         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4454         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4455         check_yasm "CPU amdnop" || disable cpunop
4456     fi
4457
4458     case "$cpu" in
4459         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4460             disable fast_clz
4461         ;;
4462     esac
4463
4464 fi
4465
4466 check_ldflags -Wl,--as-needed
4467
4468 if check_func dlopen; then
4469     ldl=
4470 elif check_func dlopen -ldl; then
4471     ldl=-ldl
4472 fi
4473
4474 if ! disabled network; then
4475     check_func getaddrinfo $network_extralibs
4476     check_func getservbyport $network_extralibs
4477     check_func inet_aton $network_extralibs
4478
4479     check_type netdb.h "struct addrinfo"
4480     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4481     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4482     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4483     check_type poll.h "struct pollfd"
4484     check_type netinet/sctp.h "struct sctp_event_subscribe"
4485     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4486     check_type netinet/in.h "struct sockaddr_in6"
4487     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4488     check_type "sys/types.h sys/socket.h" socklen_t
4489
4490     # Prefer arpa/inet.h over winsock2
4491     if check_header arpa/inet.h ; then
4492         check_func closesocket
4493     elif check_header winsock2.h ; then
4494         check_func_headers winsock2.h closesocket -lws2 &&
4495             network_extralibs="-lws2" ||
4496         { check_func_headers winsock2.h closesocket -lws2_32 &&
4497             network_extralibs="-lws2_32"; } || disable winsock2_h network
4498         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4499
4500         check_type ws2tcpip.h socklen_t
4501         check_type ws2tcpip.h "struct addrinfo"
4502         check_type ws2tcpip.h "struct group_source_req"
4503         check_type ws2tcpip.h "struct ip_mreq_source"
4504         check_type ws2tcpip.h "struct ipv6_mreq"
4505         check_type winsock2.h "struct pollfd"
4506         check_struct winsock2.h "struct sockaddr" sa_len
4507         check_type ws2tcpip.h "struct sockaddr_in6"
4508         check_type ws2tcpip.h "struct sockaddr_storage"
4509     else
4510         disable network
4511     fi
4512 fi
4513
4514 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4515 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4516 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4517 check_builtin sarestart signal.h "SA_RESTART"
4518 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4519
4520 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4521 check_func  ${malloc_prefix}memalign            && enable memalign
4522 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4523
4524 check_func  access
4525 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4526 check_func  fcntl
4527 check_func  fork
4528 check_func  gethrtime
4529 check_func  getopt
4530 check_func  getrusage
4531 check_func  gettimeofday
4532 check_func  isatty
4533 check_func  localtime_r
4534 check_func  mach_absolute_time
4535 check_func  mkstemp
4536 check_func  mmap
4537 check_func  mprotect
4538 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4539 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4540 check_func  sched_getaffinity
4541 check_func  setrlimit
4542 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4543 check_func  strerror_r
4544 check_func  sysconf
4545 check_func  sysctl
4546 check_func  usleep
4547
4548 check_func_headers conio.h kbhit
4549 check_func_headers io.h setmode
4550 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4551 check_func_headers stdlib.h getenv
4552
4553 check_func_headers windows.h CoTaskMemFree -lole32
4554 check_func_headers windows.h GetProcessAffinityMask
4555 check_func_headers windows.h GetProcessTimes
4556 check_func_headers windows.h GetSystemTimeAsFileTime
4557 check_func_headers windows.h MapViewOfFile
4558 check_func_headers windows.h PeekNamedPipe
4559 check_func_headers windows.h SetConsoleTextAttribute
4560 check_func_headers windows.h Sleep
4561 check_func_headers windows.h VirtualAlloc
4562 check_func_headers glob.h glob
4563 enabled xlib &&
4564     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4565
4566 check_header cl/cl.h
4567 check_header direct.h
4568 check_header dlfcn.h
4569 check_header dxva.h
4570 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4571 check_header io.h
4572 check_header libcrystalhd/libcrystalhd_if.h
4573 check_header mach/mach_time.h
4574 check_header malloc.h
4575 check_header poll.h
4576 check_header sys/mman.h
4577 check_header sys/param.h
4578 check_header sys/resource.h
4579 check_header sys/select.h
4580 check_header sys/time.h
4581 check_header sys/un.h
4582 check_header termios.h
4583 check_header unistd.h
4584 check_header vdpau/vdpau.h
4585 check_header vdpau/vdpau_x11.h
4586 check_header VideoDecodeAcceleration/VDADecoder.h
4587 check_header windows.h
4588 check_header X11/extensions/XvMClib.h
4589 check_header asm/types.h
4590
4591 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4592 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4593 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4594
4595 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4596
4597 if ! disabled w32threads && ! enabled pthreads; then
4598     check_func_headers "windows.h process.h" _beginthreadex &&
4599         enable w32threads || disable w32threads
4600 fi
4601
4602 # check for some common methods of building with pthread support
4603 # do this before the optional library checks as some of them require pthreads
4604 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4605     enable pthreads
4606     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4607         add_cflags -pthread
4608         add_extralibs -pthread
4609     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4610         add_cflags -pthreads
4611         add_extralibs -pthreads
4612     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4613         add_cflags -ldl -pthread
4614         add_extralibs -ldl -pthread
4615     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4616         add_extralibs -lpthreadGC2
4617     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4618         :
4619     elif ! check_func pthread_join && ! check_func pthread_create; then
4620         disable pthreads
4621     fi
4622     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4623 fi
4624
4625
4626 if enabled pthreads; then
4627   check_func pthread_cancel
4628 fi
4629
4630 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4631 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4632
4633 check_lib math.h sin -lm && LIBM="-lm"
4634 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4635
4636 atan2f_args=2
4637 ldexpf_args=2
4638 powf_args=2
4639 fminf_args=2
4640
4641 for func in $MATH_FUNCS; do
4642     eval check_mathfunc $func \${${func}_args:-1}
4643 done
4644
4645 # these are off by default, so fail if requested and not available
4646 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4647 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4648                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4649                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4650 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4651 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4652 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4653 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4654 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4655 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4656 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4657 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4658 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4659 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4660                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4661                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4662 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4663 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4664 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4665 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"
4666 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4667 enabled fontconfig        && enable libfontconfig
4668 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4669 enabled libfreetype       && require_libfreetype
4670 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4671 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4672                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4673                                done || die "ERROR: libgsm not found"; }
4674 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4675 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4676 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4677 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4678 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4679 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4680 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4681 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4682                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4683                                die "ERROR: libopenjpeg not found"; }
4684 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4685 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4686 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4687 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4688 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4689 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4690 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4691 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4692 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4693 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4694     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4695     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4696 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4697 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4698                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4699                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4700 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4701 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4702 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4703 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4704 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4705 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4706 enabled libvpx            && {
4707     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4708                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4709     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 ||
4710                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4711     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4712     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; } }
4713 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4714 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4715 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4716                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4717                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4718 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4719                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4720                                die "ERROR: libx265 version must be >= 13."; }
4721 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4722 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4723 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4724 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4725 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4726                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4727                                die "ERROR: openal not found"; } &&
4728                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4729                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4730 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4731                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4732                                die "ERROR: opencl not found"; } &&
4733                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4734                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4735                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4736 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4737                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4738                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4739                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4740                                die "ERROR: opengl not found."
4741                              }
4742 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4743                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4744                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4745                                die "ERROR: openssl not found"; }
4746 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4747
4748 if enabled gnutls; then
4749     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4750     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4751 fi
4752
4753 # libdc1394 check
4754 if enabled libdc1394; then
4755     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4756         enable libdc1394_2; } ||
4757     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4758         enable libdc1394_1; } ||
4759     die "ERROR: No version of libdc1394 found "
4760 fi
4761
4762 SDL_CONFIG="${cross_prefix}sdl-config"
4763 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4764     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4765     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4766     enable sdl
4767 else
4768   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4769     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4770     sdl_libs=$("${SDL_CONFIG}" --libs)