Fix standalone compilation of sonic lossless encoder.
[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 decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --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 "$logfile" produced by configure as this will help
420 solving the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | 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 add_cppflags(){
730     append CPPFLAGS "$@"
731 }
732
733 add_cflags(){
734     append CFLAGS $($cflags_filter "$@")
735 }
736
737 add_cxxflags(){
738     append CXXFLAGS $($cflags_filter "$@")
739 }
740
741 add_asflags(){
742     append ASFLAGS $($asflags_filter "$@")
743 }
744
745 add_ldflags(){
746     append LDFLAGS $($ldflags_filter "$@")
747 }
748
749 add_stripflags(){
750     append ASMSTRIPFLAGS "$@"
751 }
752
753 add_extralibs(){
754     prepend extralibs $($ldflags_filter "$@")
755 }
756
757 add_host_cppflags(){
758     append host_cppflags "$@"
759 }
760
761 add_host_cflags(){
762     append host_cflags $($host_cflags_filter "$@")
763 }
764
765 add_host_ldflags(){
766     append host_ldflags $($host_ldflags_filter "$@")
767 }
768
769 add_compat(){
770     append compat_objs $1
771     shift
772     map 'add_cppflags -D$v' "$@"
773 }
774
775 check_cmd(){
776     log "$@"
777     "$@" >> $logfile 2>&1
778 }
779
780 check_stat(){
781     log check_stat "$@"
782     stat "$1" >> $logfile 2>&1
783 }
784
785 cc_o(){
786     eval printf '%s\\n' $CC_O
787 }
788
789 cc_e(){
790     eval printf '%s\\n' $CC_E
791 }
792
793 check_cc(){
794     log check_cc "$@"
795     cat > $TMPC
796     log_file $TMPC
797     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
798 }
799
800 check_cxx(){
801     log check_cxx "$@"
802     cat > $TMPCPP
803     log_file $TMPCPP
804     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
805 }
806
807 check_oc(){
808     log check_oc "$@"
809     cat > $TMPM
810     log_file $TMPM
811     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
812 }
813
814 check_cpp(){
815     log check_cpp "$@"
816     cat > $TMPC
817     log_file $TMPC
818     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
819 }
820
821 as_o(){
822     eval printf '%s\\n' $AS_O
823 }
824
825 check_as(){
826     log check_as "$@"
827     cat > $TMPS
828     log_file $TMPS
829     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
830 }
831
832 check_inline_asm(){
833     log check_inline_asm "$@"
834     name="$1"
835     code="$2"
836     shift 2
837     disable $name
838     check_cc "$@" <<EOF && enable $name
839 void foo(void){ __asm__ volatile($code); }
840 EOF
841 }
842
843 check_insn(){
844     log check_insn "$@"
845     check_inline_asm ${1}_inline "\"$2\""
846     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
847 }
848
849 check_yasm(){
850     log check_yasm "$@"
851     echo "$1" > $TMPS
852     log_file $TMPS
853     shift 1
854     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
855 }
856
857 ld_o(){
858     eval printf '%s\\n' $LD_O
859 }
860
861 check_ld(){
862     log check_ld "$@"
863     type=$1
864     shift 1
865     flags=$(filter_out '-l*|*.so' $@)
866     libs=$(filter '-l*|*.so' $@)
867     check_$type $($cflags_filter $flags) || return
868     flags=$($ldflags_filter $flags)
869     libs=$($ldflags_filter $libs)
870     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
871 }
872
873 print_include(){
874     hdr=$1
875     test "${hdr%.h}" = "${hdr}" &&
876         echo "#include $hdr"    ||
877         echo "#include <$hdr>"
878 }
879
880 check_code(){
881     log check_code "$@"
882     check=$1
883     headers=$2
884     code=$3
885     shift 3
886     {
887         for hdr in $headers; do
888             print_include $hdr
889         done
890         echo "int main(void) { $code; return 0; }"
891     } | check_$check "$@"
892 }
893
894 check_cppflags(){
895     log check_cppflags "$@"
896     check_cc "$@" <<EOF && append CPPFLAGS "$@"
897 int x;
898 EOF
899 }
900
901 test_cflags(){
902     log test_cflags "$@"
903     set -- $($cflags_filter "$@")
904     check_cc "$@" <<EOF
905 int x;
906 EOF
907 }
908
909 check_cflags(){
910     log check_cflags "$@"
911     test_cflags "$@" && add_cflags "$@"
912 }
913
914 check_cxxflags(){
915     log check_cxxflags "$@"
916     set -- $($cflags_filter "$@")
917     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
918 int x;
919 EOF
920 }
921
922 test_ldflags(){
923     log test_ldflags "$@"
924     check_ld "cc" "$@" <<EOF
925 int main(void){ return 0; }
926 EOF
927 }
928
929 check_ldflags(){
930     log check_ldflags "$@"
931     test_ldflags "$@" && add_ldflags "$@"
932 }
933
934 test_stripflags(){
935     log test_stripflags "$@"
936     # call check_cc to get a fresh TMPO
937     check_cc <<EOF
938 int main(void) { return 0; }
939 EOF
940     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
941 }
942
943 check_stripflags(){
944     log check_stripflags "$@"
945     test_stripflags "$@" && add_stripflags "$@"
946 }
947
948 check_header(){
949     log check_header "$@"
950     header=$1
951     shift
952     disable_safe $header
953     check_cpp "$@" <<EOF && enable_safe $header
954 #include <$header>
955 int x;
956 EOF
957 }
958
959 check_header_oc(){
960     log check_header_oc "$@"
961     rm -f -- "$TMPO"
962     header=$1
963     shift
964     disable_safe $header
965     {
966        echo "#include <$header>"
967        echo "int main(void) { return 0; }"
968     } | check_oc && check_stat "$TMPO" && enable_safe $headers
969 }
970
971 check_func(){
972     log check_func "$@"
973     func=$1
974     shift
975     disable $func
976     check_ld "cc" "$@" <<EOF && enable $func
977 extern int $func();
978 int main(void){ $func(); }
979 EOF
980 }
981
982 check_mathfunc(){
983     log check_mathfunc "$@"
984     func=$1
985     narg=$2
986     shift 2
987     test $narg = 2 && args="f, g" || args="f"
988     disable $func
989     check_ld "cc" "$@" <<EOF && enable $func
990 #include <math.h>
991 float foo(float f, float g) { return $func($args); }
992 int main(void){ return (int) foo; }
993 EOF
994 }
995
996 check_func_headers(){
997     log check_func_headers "$@"
998     headers=$1
999     funcs=$2
1000     shift 2
1001     {
1002         for hdr in $headers; do
1003             print_include $hdr
1004         done
1005         for func in $funcs; do
1006             echo "long check_$func(void) { return (long) $func; }"
1007         done
1008         echo "int main(void) { return 0; }"
1009     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1010 }
1011
1012 check_class_headers_cpp(){
1013     log check_class_headers_cpp "$@"
1014     headers=$1
1015     classes=$2
1016     shift 2
1017     {
1018         for hdr in $headers; do
1019             echo "#include <$hdr>"
1020         done
1021         echo "int main(void) { "
1022         i=1
1023         for class in $classes; do
1024             echo "$class obj$i;"
1025             i=$(expr $i + 1)
1026         done
1027         echo "return 0; }"
1028     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1029 }
1030
1031 check_cpp_condition(){
1032     log check_cpp_condition "$@"
1033     header=$1
1034     condition=$2
1035     shift 2
1036     check_cpp "$@" <<EOF
1037 #include <$header>
1038 #if !($condition)
1039 #error "unsatisfied condition: $condition"
1040 #endif
1041 EOF
1042 }
1043
1044 check_lib(){
1045     log check_lib "$@"
1046     header="$1"
1047     func="$2"
1048     shift 2
1049     check_header $header && check_func $func "$@" && add_extralibs "$@"
1050 }
1051
1052 check_lib2(){
1053     log check_lib2 "$@"
1054     headers="$1"
1055     funcs="$2"
1056     shift 2
1057     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1058 }
1059
1060 check_lib_cpp(){
1061     log check_lib_cpp "$@"
1062     headers="$1"
1063     classes="$2"
1064     shift 2
1065     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1066 }
1067
1068 check_pkg_config(){
1069     log check_pkg_config "$@"
1070     pkgandversion="$1"
1071     pkg="${1%% *}"
1072     headers="$2"
1073     funcs="$3"
1074     shift 3
1075     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1076     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1077     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1078     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1079         set_safe ${pkg}_cflags $pkg_cflags   &&
1080         set_safe ${pkg}_libs   $pkg_libs
1081 }
1082
1083 check_exec(){
1084     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1085 }
1086
1087 check_exec_crash(){
1088     code=$(cat)
1089
1090     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1091     # are safe but may not be available everywhere.  Thus we use
1092     # raise(SIGTERM) instead.  The check is run in a subshell so we
1093     # can redirect the "Terminated" message from the shell.  SIGBUS
1094     # is not defined by standard C so it is used conditionally.
1095
1096     (check_exec "$@") >> $logfile 2>&1 <<EOF
1097 #include <signal.h>
1098 static void sighandler(int sig){
1099     raise(SIGTERM);
1100 }
1101 int foo(void){
1102     $code
1103 }
1104 int (*func_ptr)(void) = foo;
1105 int main(void){
1106     signal(SIGILL, sighandler);
1107     signal(SIGFPE, sighandler);
1108     signal(SIGSEGV, sighandler);
1109 #ifdef SIGBUS
1110     signal(SIGBUS, sighandler);
1111 #endif
1112     return func_ptr();
1113 }
1114 EOF
1115 }
1116
1117 check_type(){
1118     log check_type "$@"
1119     headers=$1
1120     type=$2
1121     shift 2
1122     disable_safe "$type"
1123     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1124 }
1125
1126 check_struct(){
1127     log check_struct "$@"
1128     headers=$1
1129     struct=$2
1130     member=$3
1131     shift 3
1132     disable_safe "${struct}_${member}"
1133     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1134         enable_safe "${struct}_${member}"
1135 }
1136
1137 check_builtin(){
1138     log check_builtin "$@"
1139     name=$1
1140     headers=$2
1141     builtin=$3
1142     shift 3
1143     disable "$name"
1144     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1145 }
1146
1147 check_compile_assert(){
1148     log check_compile_assert "$@"
1149     name=$1
1150     headers=$2
1151     condition=$3
1152     shift 3
1153     disable "$name"
1154     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1155 }
1156
1157 require(){
1158     name="$1"
1159     header="$2"
1160     func="$3"
1161     shift 3
1162     check_lib $header $func "$@" || die "ERROR: $name not found"
1163 }
1164
1165 require2(){
1166     name="$1"
1167     headers="$2"
1168     func="$3"
1169     shift 3
1170     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1171 }
1172
1173 require_cpp(){
1174     name="$1"
1175     headers="$2"
1176     classes="$3"
1177     shift 3
1178     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1179 }
1180
1181 require_pkg_config(){
1182     pkg="$1"
1183     check_pkg_config "$@" || die "ERROR: $pkg not found"
1184     add_cflags    $(get_safe ${pkg}_cflags)
1185     add_extralibs $(get_safe ${pkg}_libs)
1186 }
1187
1188 require_libfreetype(){
1189     log require_libfreetype "$@"
1190     pkg="freetype2"
1191     check_cmd $pkg_config --exists --print-errors $pkg \
1192       || die "ERROR: $pkg not found"
1193     pkg_cflags=$($pkg_config --cflags $pkg)
1194     pkg_libs=$($pkg_config --libs $pkg)
1195     {
1196         echo "#include <ft2build.h>"
1197         echo "#include FT_FREETYPE_H"
1198         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1199         echo "int main(void) { return 0; }"
1200     } | check_ld "cc" $pkg_cflags $pkg_libs \
1201       && set_safe ${pkg}_cflags $pkg_cflags \
1202       && set_safe ${pkg}_libs   $pkg_libs \
1203       || die "ERROR: $pkg not found"
1204     add_cflags    $(get_safe ${pkg}_cflags)
1205     add_extralibs $(get_safe ${pkg}_libs)
1206 }
1207
1208 hostcc_e(){
1209     eval printf '%s\\n' $HOSTCC_E
1210 }
1211
1212 hostcc_o(){
1213     eval printf '%s\\n' $HOSTCC_O
1214 }
1215
1216 check_host_cc(){
1217     log check_host_cc "$@"
1218     cat > $TMPC
1219     log_file $TMPC
1220     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1221 }
1222
1223 check_host_cpp(){
1224     log check_host_cpp "$@"
1225     cat > $TMPC
1226     log_file $TMPC
1227     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1228 }
1229
1230 check_host_cppflags(){
1231     log check_host_cppflags "$@"
1232     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1233 int x;
1234 EOF
1235 }
1236
1237 check_host_cflags(){
1238     log check_host_cflags "$@"
1239     set -- $($host_cflags_filter "$@")
1240     check_host_cc "$@" <<EOF && append host_cflags "$@"
1241 int x;
1242 EOF
1243 }
1244
1245 check_host_cpp_condition(){
1246     log check_host_cpp_condition "$@"
1247     header=$1
1248     condition=$2
1249     shift 2
1250     check_host_cpp "$@" <<EOF
1251 #include <$header>
1252 #if !($condition)
1253 #error "unsatisfied condition: $condition"
1254 #endif
1255 EOF
1256 }
1257
1258 apply(){
1259     file=$1
1260     shift
1261     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1262 }
1263
1264 cp_if_changed(){
1265     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1266     mkdir -p "$(dirname $2)"
1267     $cp_f "$1" "$2"
1268 }
1269
1270 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1271 # system-dependent things.
1272
1273 COMPONENT_LIST="
1274     bsfs
1275     decoders
1276     demuxers
1277     encoders
1278     filters
1279     hwaccels
1280     indevs
1281     muxers
1282     outdevs
1283     parsers
1284     protocols
1285 "
1286
1287 EXAMPLE_LIST="
1288     avio_reading_example
1289     decoding_encoding_example
1290     demuxing_decoding_example
1291     filter_audio_example
1292     filtering_audio_example
1293     filtering_video_example
1294     metadata_example
1295     muxing_example
1296     remuxing_example
1297     resampling_audio_example
1298     scaling_video_example
1299     transcode_aac_example
1300     transcoding_example
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     avisynth
1305     bzlib
1306     crystalhd
1307     decklink
1308     frei0r
1309     gnutls
1310     iconv
1311     ladspa
1312     libaacplus
1313     libass
1314     libbluray
1315     libbs2b
1316     libcaca
1317     libcdio
1318     libcelt
1319     libdc1394
1320     libfaac
1321     libfdk_aac
1322     libflite
1323     libfontconfig
1324     libfreetype
1325     libgme
1326     libgsm
1327     libiec61883
1328     libilbc
1329     libmodplug
1330     libmp3lame
1331     libnut
1332     libopencore_amrnb
1333     libopencore_amrwb
1334     libopencv
1335     libopenjpeg
1336     libopus
1337     libpulse
1338     libquvi
1339     librtmp
1340     libschroedinger
1341     libshine
1342     libsoxr
1343     libspeex
1344     libssh
1345     libstagefright_h264
1346     libtheora
1347     libtwolame
1348     libutvideo
1349     libv4l2
1350     libvidstab
1351     libvo_aacenc
1352     libvo_amrwbenc
1353     libvorbis
1354     libvpx
1355     libwavpack
1356     libwebp
1357     libx264
1358     libx265
1359     libxavs
1360     libxvid
1361     libzmq
1362     libzvbi
1363     openal
1364     opencl
1365     opengl
1366     openssl
1367     x11grab
1368     xlib
1369     zlib
1370 "
1371
1372 DOCUMENT_LIST="
1373     doc
1374     htmlpages
1375     manpages
1376     podpages
1377     txtpages
1378 "
1379
1380 FEATURE_LIST="
1381     ftrapv
1382     gray
1383     hardcoded_tables
1384     runtime_cpudetect
1385     safe_bitstream_reader
1386     shared
1387     small
1388     sram
1389     static
1390     swscale_alpha
1391 "
1392
1393 HWACCEL_LIST="
1394     dxva2
1395     vaapi
1396     vda
1397     vdpau
1398     xvmc
1399 "
1400
1401 LIBRARY_LIST="
1402     avcodec
1403     avdevice
1404     avfilter
1405     avformat
1406     avresample
1407     avutil
1408     postproc
1409     swresample
1410     swscale
1411 "
1412
1413 LICENSE_LIST="
1414     gpl
1415     nonfree
1416     version3
1417 "
1418
1419 PROGRAM_LIST="
1420     ffplay
1421     ffprobe
1422     ffserver
1423     ffmpeg
1424 "
1425
1426 SUBSYSTEM_LIST="
1427     dct
1428     dwt
1429     error_resilience
1430     fast_unaligned
1431     fft
1432     lsp
1433     lzo
1434     mdct
1435     network
1436     rdft
1437 "
1438
1439 CONFIG_LIST="
1440     $COMPONENT_LIST
1441     $DOCUMENT_LIST
1442     $EXAMPLE_LIST
1443     $EXTERNAL_LIBRARY_LIST
1444     $FEATURE_LIST
1445     $HWACCEL_LIST
1446     $LICENSE_LIST
1447     $LIBRARY_LIST
1448     $PROGRAM_LIST
1449     $SUBSYSTEM_LIST
1450     fontconfig
1451     incompatible_libav_abi
1452     memalign_hack
1453     memory_poisoning
1454     neon_clobber_test
1455     pic
1456     pod2man
1457     raise_major
1458     thumb
1459     xmm_clobber_test
1460 "
1461
1462 THREADS_LIST="
1463     pthreads
1464     os2threads
1465     w32threads
1466 "
1467
1468 ATOMICS_LIST="
1469     atomics_gcc
1470     atomics_suncc
1471     atomics_win32
1472 "
1473
1474 ARCH_LIST="
1475     aarch64
1476     alpha
1477     arm
1478     avr32
1479     avr32_ap
1480     avr32_uc
1481     bfin
1482     ia64
1483     m68k
1484     mips
1485     mips64
1486     parisc
1487     ppc
1488     ppc64
1489     s390
1490     sh4
1491     sparc
1492     sparc64
1493     tilegx
1494     tilepro
1495     tomi
1496     x86
1497     x86_32
1498     x86_64
1499 "
1500
1501 ARCH_EXT_LIST_ARM="
1502     armv5te
1503     armv6
1504     armv6t2
1505     armv8
1506     neon
1507     vfp
1508     vfpv3
1509 "
1510
1511 ARCH_EXT_LIST_MIPS="
1512     mipsfpu
1513     mips32r2
1514     mipsdspr1
1515     mipsdspr2
1516 "
1517
1518 ARCH_EXT_LIST_X86_SIMD="
1519     amd3dnow
1520     amd3dnowext
1521     avx
1522     avx2
1523     fma3
1524     fma4
1525     mmx
1526     mmxext
1527     sse
1528     sse2
1529     sse3
1530     sse4
1531     sse42
1532     ssse3
1533     xop
1534 "
1535
1536 ARCH_EXT_LIST_PPC="
1537     altivec
1538     dcbzl
1539     ldbrx
1540     ppc4xx
1541 "
1542
1543 ARCH_EXT_LIST_X86="
1544     $ARCH_EXT_LIST_X86_SIMD
1545     cpunop
1546     i686
1547 "
1548
1549 ARCH_EXT_LIST="
1550     $ARCH_EXT_LIST_ARM
1551     $ARCH_EXT_LIST_PPC
1552     $ARCH_EXT_LIST_X86
1553     $ARCH_EXT_LIST_MIPS
1554     loongson
1555 "
1556
1557 ARCH_FEATURES="
1558     aligned_stack
1559     fast_64bit
1560     fast_clz
1561     fast_cmov
1562     local_aligned_8
1563     local_aligned_16
1564     local_aligned_32
1565 "
1566
1567 BUILTIN_LIST="
1568     atomic_cas_ptr
1569     machine_rw_barrier
1570     MemoryBarrier
1571     mm_empty
1572     rdtsc
1573     sarestart
1574     sync_val_compare_and_swap
1575 "
1576 HAVE_LIST_CMDLINE="
1577     inline_asm
1578     symver
1579     yasm
1580 "
1581
1582 HAVE_LIST_PUB="
1583     bigendian
1584     fast_unaligned
1585     incompatible_libav_abi
1586 "
1587
1588 HEADERS_LIST="
1589     alsa_asoundlib_h
1590     altivec_h
1591     arpa_inet_h
1592     asm_types_h
1593     cdio_paranoia_h
1594     cdio_paranoia_paranoia_h
1595     CL_cl_h
1596     dev_bktr_ioctl_bt848_h
1597     dev_bktr_ioctl_meteor_h
1598     dev_ic_bt8xx_h
1599     dev_video_bktr_ioctl_bt848_h
1600     dev_video_meteor_ioctl_meteor_h
1601     direct_h
1602     dlfcn_h
1603     dxva_h
1604     ES2_gl_h
1605     gsm_h
1606     io_h
1607     mach_mach_time_h
1608     machine_ioctl_bt848_h
1609     machine_ioctl_meteor_h
1610     malloc_h
1611     openjpeg_1_5_openjpeg_h
1612     OpenGL_gl3_h
1613     poll_h
1614     sndio_h
1615     soundcard_h
1616     sys_mman_h
1617     sys_param_h
1618     sys_resource_h
1619     sys_select_h
1620     sys_soundcard_h
1621     sys_time_h
1622     sys_un_h
1623     sys_videoio_h
1624     termios_h
1625     unistd_h
1626     windows_h
1627     winsock2_h
1628 "
1629
1630 MATH_FUNCS="
1631     atanf
1632     atan2f
1633     cbrt
1634     cbrtf
1635     cosf
1636     exp2
1637     exp2f
1638     expf
1639     isinf
1640     isnan
1641     ldexpf
1642     llrint
1643     llrintf
1644     log2
1645     log2f
1646     log10f
1647     lrint
1648     lrintf
1649     powf
1650     rint
1651     round
1652     roundf
1653     sinf
1654     trunc
1655     truncf
1656 "
1657
1658 SYSTEM_FUNCS="
1659     access
1660     aligned_malloc
1661     clock_gettime
1662     closesocket
1663     CommandLineToArgvW
1664     CoTaskMemFree
1665     CryptGenRandom
1666     dlopen
1667     fcntl
1668     flt_lim
1669     fork
1670     getaddrinfo
1671     gethrtime
1672     getopt
1673     GetProcessAffinityMask
1674     GetProcessMemoryInfo
1675     GetProcessTimes
1676     getrusage
1677     getservbyport
1678     GetSystemTimeAsFileTime
1679     gettimeofday
1680     glob
1681     glXGetProcAddress
1682     inet_aton
1683     isatty
1684     jack_port_get_latency_range
1685     kbhit
1686     localtime_r
1687     lzo1x_999_compress
1688     mach_absolute_time
1689     MapViewOfFile
1690     memalign
1691     mkstemp
1692     mmap
1693     mprotect
1694     nanosleep
1695     PeekNamedPipe
1696     posix_memalign
1697     pthread_cancel
1698     sched_getaffinity
1699     SetConsoleTextAttribute
1700     setmode
1701     setrlimit
1702     Sleep
1703     strerror_r
1704     sysconf
1705     sysctl
1706     usleep
1707     VirtualAlloc
1708     wglGetProcAddress
1709 "
1710
1711 TOOLCHAIN_FEATURES="
1712     asm_mod_q
1713     attribute_may_alias
1714     attribute_packed
1715     ebp_available
1716     ebx_available
1717     gnu_as
1718     gnu_windres
1719     ibm_asm
1720     inline_asm_labels
1721     inline_asm_nonlocal_labels
1722     inline_asm_direct_symbol_refs
1723     pragma_deprecated
1724     rsync_contimeout
1725     symver_asm_label
1726     symver_gnu_asm
1727     vfp_args
1728     xform_asm
1729     xmm_clobbers
1730 "
1731
1732 TYPES_LIST="
1733     socklen_t
1734     struct_addrinfo
1735     struct_group_source_req
1736     struct_ip_mreq_source
1737     struct_ipv6_mreq
1738     struct_pollfd
1739     struct_rusage_ru_maxrss
1740     struct_sctp_event_subscribe
1741     struct_sockaddr_in6
1742     struct_sockaddr_sa_len
1743     struct_sockaddr_storage
1744     struct_stat_st_mtim_tv_nsec
1745     struct_v4l2_frmivalenum_discrete
1746 "
1747
1748 HAVE_LIST="
1749     $ARCH_EXT_LIST
1750     $(add_suffix _external $ARCH_EXT_LIST)
1751     $(add_suffix _inline   $ARCH_EXT_LIST)
1752     $ARCH_FEATURES
1753     $ATOMICS_LIST
1754     $BUILTIN_LIST
1755     $HAVE_LIST_CMDLINE
1756     $HAVE_LIST_PUB
1757     $HEADERS_LIST
1758     $MATH_FUNCS
1759     $SYSTEM_FUNCS
1760     $THREADS_LIST
1761     $TOOLCHAIN_FEATURES
1762     $TYPES_LIST
1763     atomics_native
1764     dos_paths
1765     dxva2_lib
1766     libc_msvcrt
1767     libdc1394_1
1768     libdc1394_2
1769     makeinfo
1770     perl
1771     pod2man
1772     sdl
1773     texi2html
1774     threads
1775     vdpau_x11
1776     xlib
1777 "
1778
1779 # options emitted with CONFIG_ prefix but not available on the command line
1780 CONFIG_EXTRA="
1781     aandcttables
1782     ac3dsp
1783     audio_frame_queue
1784     cabac
1785     dsputil
1786     exif
1787     frame_thread_encoder
1788     gcrypt
1789     golomb
1790     gplv3
1791     h263dsp
1792     h264chroma
1793     h264dsp
1794     h264pred
1795     h264qpel
1796     hpeldsp
1797     huffman
1798     intrax8
1799     lgplv3
1800     llviddsp
1801     lpc
1802     mpegaudio
1803     mpegaudiodsp
1804     mpegvideo
1805     mpegvideoenc
1806     nettle
1807     rangecoder
1808     riffdec
1809     riffenc
1810     rtpdec
1811     rtpenc_chain
1812     sinewin
1813     tpeldsp
1814     videodsp
1815     vp3dsp
1816 "
1817
1818 CMDLINE_SELECT="
1819     $ARCH_EXT_LIST
1820     $CONFIG_LIST
1821     $HAVE_LIST_CMDLINE
1822     $THREADS_LIST
1823     asm
1824     cross_compile
1825     debug
1826     extra_warnings
1827     logging
1828     lto
1829     optimizations
1830     rpath
1831     stripping
1832 "
1833
1834 PATHS_LIST="
1835     bindir
1836     datadir
1837     docdir
1838     incdir
1839     libdir
1840     mandir
1841     prefix
1842     shlibdir
1843 "
1844
1845 CMDLINE_SET="
1846     $PATHS_LIST
1847     ar
1848     arch
1849     as
1850     assert_level
1851     build_suffix
1852     cc
1853     cpu
1854     cross_prefix
1855     cxx
1856     dep_cc
1857     extra_version
1858     gas
1859     host_cc
1860     host_cflags
1861     host_ld
1862     host_ldflags
1863     host_libs
1864     host_os
1865     install
1866     ld
1867     logfile
1868     malloc_prefix
1869     nm
1870     optflags
1871     pkg_config
1872     pkg_config_flags
1873     progs_suffix
1874     random_seed
1875     ranlib
1876     samples
1877     strip
1878     sysinclude
1879     sysroot
1880     target_exec
1881     target_os
1882     target_path
1883     target_samples
1884     tempprefix
1885     toolchain
1886     valgrind
1887     yasmexe
1888 "
1889
1890 CMDLINE_APPEND="
1891     extra_cflags
1892     extra_cxxflags
1893     host_cppflags
1894 "
1895
1896 # code dependency declarations
1897
1898 # architecture extensions
1899
1900 armv5te_deps="arm"
1901 armv6_deps="arm"
1902 armv6t2_deps="arm"
1903 armv8_deps="aarch64"
1904 neon_deps_any="aarch64 arm"
1905 vfp_deps_any="aarch64 arm"
1906 vfpv3_deps="vfp"
1907
1908 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1909
1910 mipsfpu_deps="mips"
1911 mips32r2_deps="mips"
1912 mipsdspr1_deps="mips"
1913 mipsdspr2_deps="mips"
1914
1915 altivec_deps="ppc"
1916 ppc4xx_deps="ppc"
1917
1918 cpunop_deps="i686"
1919 x86_64_select="i686"
1920 x86_64_suggest="fast_cmov"
1921
1922 amd3dnow_deps="mmx"
1923 amd3dnowext_deps="amd3dnow"
1924 i686_deps="x86"
1925 mmx_deps="x86"
1926 mmxext_deps="mmx"
1927 sse_deps="mmxext"
1928 sse2_deps="sse"
1929 sse3_deps="sse2"
1930 ssse3_deps="sse3"
1931 sse4_deps="ssse3"
1932 sse42_deps="sse4"
1933 avx_deps="sse42"
1934 xop_deps="avx"
1935 fma3_deps="avx"
1936 fma4_deps="avx"
1937 avx2_deps="avx"
1938
1939 mmx_external_deps="yasm"
1940 mmx_inline_deps="inline_asm"
1941 mmx_suggest="mmx_external mmx_inline"
1942
1943 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1944     eval dep=\$${ext}_deps
1945     eval ${ext}_external_deps='"${dep}_external"'
1946     eval ${ext}_inline_deps='"${dep}_inline"'
1947     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1948 done
1949
1950 aligned_stack_if_any="aarch64 ppc x86"
1951 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1952 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1953 fast_unaligned_if_any="aarch64 ppc x86"
1954
1955 need_memalign="altivec neon sse"
1956
1957 # system capabilities
1958 log2_deps="!libc_msvcrt"
1959
1960 symver_if_any="symver_asm_label symver_gnu_asm"
1961
1962 # threading support
1963 atomics_gcc_if="sync_val_compare_and_swap"
1964 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1965 atomics_win32_if="MemoryBarrier"
1966 atomics_native_if_any="$ATOMICS_LIST"
1967 w32threads_deps="atomics_native"
1968 threads_if_any="$THREADS_LIST"
1969
1970 # subsystems
1971 dct_select="rdft"
1972 error_resilience_select="dsputil"
1973 frame_thread_encoder_deps="encoders threads"
1974 mdct_select="fft"
1975 rdft_select="fft"
1976 mpegaudio_select="mpegaudiodsp"
1977 mpegaudiodsp_select="dct"
1978 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1979 mpegvideoenc_select="dsputil mpegvideo"
1980
1981 # decoders / encoders
1982 aac_decoder_select="mdct sinewin"
1983 aac_encoder_select="audio_frame_queue mdct sinewin"
1984 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1985 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1986 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1987 ac3_encoder_select="mdct ac3dsp dsputil"
1988 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1989 aic_decoder_select="dsputil golomb"
1990 alac_encoder_select="lpc"
1991 als_decoder_select="dsputil"
1992 amrnb_decoder_select="lsp"
1993 amrwb_decoder_select="lsp"
1994 amv_decoder_select="sp5x_decoder exif"
1995 amv_encoder_select="aandcttables"
1996 ape_decoder_select="dsputil"
1997 asv1_decoder_select="dsputil"
1998 asv1_encoder_select="dsputil"
1999 asv2_decoder_select="dsputil"
2000 asv2_encoder_select="dsputil"
2001 atrac1_decoder_select="mdct sinewin"
2002 atrac3_decoder_select="mdct"
2003 atrac3p_decoder_select="mdct sinewin"
2004 avrn_decoder_select="exif"
2005 bink_decoder_select="dsputil hpeldsp"
2006 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2007 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2008 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2009 cllc_decoder_select="dsputil"
2010 comfortnoise_encoder_select="lpc"
2011 cook_decoder_select="dsputil mdct sinewin"
2012 cscd_decoder_select="lzo"
2013 cscd_decoder_suggest="zlib"
2014 dca_decoder_select="mdct"
2015 dirac_decoder_select="dsputil dwt golomb videodsp"
2016 dnxhd_decoder_select="dsputil"
2017 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2018 dvvideo_decoder_select="dsputil"
2019 dvvideo_encoder_select="dsputil"
2020 dxa_decoder_select="zlib"
2021 eac3_decoder_select="ac3_decoder"
2022 eac3_encoder_select="ac3_encoder"
2023 eamad_decoder_select="aandcttables dsputil mpegvideo"
2024 eatgq_decoder_select="aandcttables"
2025 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2026 exr_decoder_select="zlib"
2027 ffv1_decoder_select="golomb rangecoder"
2028 ffv1_encoder_select="rangecoder"
2029 ffvhuff_decoder_select="huffyuv_decoder"
2030 ffvhuff_encoder_select="huffyuv_encoder"
2031 fic_decoder_select="golomb"
2032 flac_decoder_select="golomb"
2033 flac_encoder_select="dsputil golomb lpc"
2034 flashsv_decoder_select="zlib"
2035 flashsv_encoder_select="zlib"
2036 flashsv2_encoder_select="zlib"
2037 flashsv2_decoder_select="zlib"
2038 flv_decoder_select="h263_decoder"
2039 flv_encoder_select="h263_encoder"
2040 fourxm_decoder_select="dsputil"
2041 fraps_decoder_select="dsputil huffman"
2042 g2m_decoder_select="dsputil zlib"
2043 g729_decoder_select="dsputil"
2044 h261_decoder_select="error_resilience mpegvideo"
2045 h261_encoder_select="aandcttables mpegvideoenc"
2046 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2047 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2048 h263i_decoder_select="h263_decoder"
2049 h263p_encoder_select="h263_encoder"
2050 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2051 h264_decoder_suggest="error_resilience"
2052 hevc_decoder_select="cabac dsputil golomb videodsp"
2053 huffyuv_decoder_select="dsputil llviddsp"
2054 huffyuv_encoder_select="dsputil huffman llviddsp"
2055 iac_decoder_select="imc_decoder"
2056 imc_decoder_select="dsputil fft mdct sinewin"
2057 indeo3_decoder_select="hpeldsp"
2058 interplay_video_decoder_select="hpeldsp"
2059 jpegls_decoder_select="golomb mjpeg_decoder"
2060 jpegls_encoder_select="golomb"
2061 jv_decoder_select="dsputil"
2062 lagarith_decoder_select="dsputil"
2063 ljpeg_encoder_select="aandcttables mpegvideoenc"
2064 loco_decoder_select="golomb"
2065 mdec_decoder_select="dsputil error_resilience mpegvideo"
2066 metasound_decoder_select="lsp mdct sinewin"
2067 mimic_decoder_select="dsputil hpeldsp"
2068 mjpeg_decoder_select="dsputil hpeldsp exif"
2069 mjpeg_encoder_select="aandcttables mpegvideoenc"
2070 mjpegb_decoder_select="mjpeg_decoder"
2071 mlp_decoder_select="mlp_parser"
2072 motionpixels_decoder_select="dsputil"
2073 mp1_decoder_select="mpegaudio"
2074 mp1float_decoder_select="mpegaudio"
2075 mp2_decoder_select="mpegaudio"
2076 mp2float_decoder_select="mpegaudio"
2077 mp3_decoder_select="mpegaudio"
2078 mp3adu_decoder_select="mpegaudio"
2079 mp3adufloat_decoder_select="mpegaudio"
2080 mp3float_decoder_select="mpegaudio"
2081 mp3on4_decoder_select="mpegaudio"
2082 mp3on4float_decoder_select="mpegaudio"
2083 mpc7_decoder_select="dsputil mpegaudiodsp"
2084 mpc8_decoder_select="mpegaudiodsp"
2085 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2086 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2087 mpeg1video_decoder_select="error_resilience mpegvideo"
2088 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2089 mpeg2video_decoder_select="error_resilience mpegvideo"
2090 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2091 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2092 mpeg4_encoder_select="h263_encoder"
2093 msmpeg4v1_decoder_select="h263_decoder"
2094 msmpeg4v2_decoder_select="h263_decoder"
2095 msmpeg4v2_encoder_select="h263_encoder"
2096 msmpeg4v3_decoder_select="h263_decoder"
2097 msmpeg4v3_encoder_select="h263_encoder"
2098 mss2_decoder_select="error_resilience vc1_decoder"
2099 mxpeg_decoder_select="mjpeg_decoder"
2100 nellymoser_decoder_select="mdct sinewin"
2101 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2102 nuv_decoder_select="dsputil lzo"
2103 on2avc_decoder_select="mdct"
2104 png_decoder_select="zlib"
2105 png_encoder_select="dsputil zlib"
2106 prores_decoder_select="dsputil"
2107 prores_encoder_select="dsputil"
2108 qcelp_decoder_select="lsp"
2109 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2110 ra_144_encoder_select="audio_frame_queue lpc"
2111 ralf_decoder_select="golomb"
2112 rawvideo_decoder_select="dsputil"
2113 rtjpeg_decoder_select="dsputil"
2114 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2115 rv10_encoder_select="h263_encoder"
2116 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2117 rv20_encoder_select="h263_encoder"
2118 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2119 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2120 shorten_decoder_select="golomb"
2121 sipr_decoder_select="lsp"
2122 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2123 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2124 sonic_decoder_select="golomb rangecoder"
2125 sonic_encoder_select="golomb rangecoder"
2126 sonic_ls_encoder_select="golomb rangecoder"
2127 sp5x_decoder_select="mjpeg_decoder"
2128 svq1_decoder_select="hpeldsp"
2129 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2130 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2131 svq3_decoder_suggest="zlib"
2132 tak_decoder_select="dsputil"
2133 theora_decoder_select="vp3_decoder"
2134 thp_decoder_select="mjpeg_decoder"
2135 tiff_decoder_suggest="zlib"
2136 tiff_encoder_suggest="zlib"
2137 truehd_decoder_select="mlp_parser"
2138 truemotion2_decoder_select="dsputil"
2139 truespeech_decoder_select="dsputil"
2140 tscc_decoder_select="zlib"
2141 twinvq_decoder_select="mdct lsp sinewin"
2142 utvideo_decoder_select="dsputil"
2143 utvideo_encoder_select="dsputil huffman"
2144 vble_decoder_select="dsputil"
2145 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2146 vc1image_decoder_select="vc1_decoder"
2147 vorbis_decoder_select="mdct"
2148 vorbis_encoder_select="mdct"
2149 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2150 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2151 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2152 vp6a_decoder_select="vp6_decoder"
2153 vp6f_decoder_select="vp6_decoder"
2154 vp7_decoder_select="h264pred videodsp"
2155 vp8_decoder_select="h264pred videodsp"
2156 vp9_decoder_select="videodsp"
2157 webp_decoder_select="vp8_decoder"
2158 wmapro_decoder_select="mdct sinewin"
2159 wmav1_decoder_select="mdct sinewin"
2160 wmav1_encoder_select="mdct sinewin"
2161 wmav2_decoder_select="mdct sinewin"
2162 wmav2_encoder_select="mdct sinewin"
2163 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2164 wmv1_decoder_select="h263_decoder"
2165 wmv1_encoder_select="h263_encoder"
2166 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2167 wmv2_encoder_select="h263_encoder"
2168 wmv3_decoder_select="vc1_decoder"
2169 wmv3image_decoder_select="wmv3_decoder"
2170 zerocodec_decoder_select="zlib"
2171 zlib_decoder_select="zlib"
2172 zlib_encoder_select="zlib"
2173 zmbv_decoder_select="zlib"
2174 zmbv_encoder_select="zlib"
2175
2176 # hardware accelerators
2177 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2178 dxva2_deps="dxva2api_h"
2179 vaapi_deps="va_va_h"
2180 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2181 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2182 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2183 xvmc_deps="X11_extensions_XvMClib_h"
2184
2185 h263_vaapi_hwaccel_deps="vaapi"
2186 h263_vaapi_hwaccel_select="h263_decoder"
2187 h263_vdpau_hwaccel_deps="vdpau"
2188 h263_vdpau_hwaccel_select="h263_decoder"
2189 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2190 h264_dxva2_hwaccel_deps="dxva2"
2191 h264_dxva2_hwaccel_select="h264_decoder"
2192 h264_vaapi_hwaccel_deps="vaapi"
2193 h264_vaapi_hwaccel_select="h264_decoder"
2194 h264_vda_decoder_deps="vda"
2195 h264_vda_decoder_select="h264_decoder"
2196 h264_vda_hwaccel_deps="vda"
2197 h264_vda_hwaccel_select="h264_decoder"
2198 h264_vdpau_decoder_deps="vdpau"
2199 h264_vdpau_decoder_select="h264_decoder"
2200 h264_vdpau_hwaccel_deps="vdpau"
2201 h264_vdpau_hwaccel_select="h264_decoder"
2202 mpeg_vdpau_decoder_deps="vdpau"
2203 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2204 mpeg_xvmc_hwaccel_deps="xvmc"
2205 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2206 mpeg1_vdpau_decoder_deps="vdpau"
2207 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2208 mpeg1_vdpau_hwaccel_deps="vdpau"
2209 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2210 mpeg1_xvmc_hwaccel_deps="xvmc"
2211 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2212 mpeg2_crystalhd_decoder_select="crystalhd"
2213 mpeg2_dxva2_hwaccel_deps="dxva2"
2214 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2215 mpeg2_vaapi_hwaccel_deps="vaapi"
2216 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2217 mpeg2_vdpau_hwaccel_deps="vdpau"
2218 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_xvmc_hwaccel_deps="xvmc"
2220 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2221 mpeg4_crystalhd_decoder_select="crystalhd"
2222 mpeg4_vaapi_hwaccel_deps="vaapi"
2223 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2224 mpeg4_vdpau_decoder_deps="vdpau"
2225 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2226 mpeg4_vdpau_hwaccel_deps="vdpau"
2227 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2228 msmpeg4_crystalhd_decoder_select="crystalhd"
2229 vc1_crystalhd_decoder_select="crystalhd"
2230 vc1_dxva2_hwaccel_deps="dxva2"
2231 vc1_dxva2_hwaccel_select="vc1_decoder"
2232 vc1_vaapi_hwaccel_deps="vaapi"
2233 vc1_vaapi_hwaccel_select="vc1_decoder"
2234 vc1_vdpau_decoder_deps="vdpau"
2235 vc1_vdpau_decoder_select="vc1_decoder"
2236 vc1_vdpau_hwaccel_deps="vdpau"
2237 vc1_vdpau_hwaccel_select="vc1_decoder"
2238 wmv3_crystalhd_decoder_select="crystalhd"
2239 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2240 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2241 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2242 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2243
2244 # parsers
2245 h264_parser_select="h264_decoder"
2246 hevc_parser_select="hevc_decoder"
2247 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2248 mpegvideo_parser_select="error_resilience mpegvideo"
2249 vc1_parser_select="mpegvideo"
2250
2251 # external libraries
2252 libaacplus_encoder_deps="libaacplus"
2253 libcelt_decoder_deps="libcelt"
2254 libfaac_encoder_deps="libfaac"
2255 libfaac_encoder_select="audio_frame_queue"
2256 libfdk_aac_decoder_deps="libfdk_aac"
2257 libfdk_aac_encoder_deps="libfdk_aac"
2258 libfdk_aac_encoder_select="audio_frame_queue"
2259 libgme_demuxer_deps="libgme"
2260 libgsm_decoder_deps="libgsm"
2261 libgsm_encoder_deps="libgsm"
2262 libgsm_ms_decoder_deps="libgsm"
2263 libgsm_ms_encoder_deps="libgsm"
2264 libilbc_decoder_deps="libilbc"
2265 libilbc_encoder_deps="libilbc"
2266 libmodplug_demuxer_deps="libmodplug"
2267 libmp3lame_encoder_deps="libmp3lame"
2268 libmp3lame_encoder_select="audio_frame_queue"
2269 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2270 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2271 libopencore_amrnb_encoder_select="audio_frame_queue"
2272 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2273 libopenjpeg_decoder_deps="libopenjpeg"
2274 libopenjpeg_encoder_deps="libopenjpeg"
2275 libopus_decoder_deps="libopus"
2276 libopus_encoder_deps="libopus"
2277 libopus_encoder_select="audio_frame_queue"
2278 libquvi_demuxer_deps="libquvi"
2279 libschroedinger_decoder_deps="libschroedinger"
2280 libschroedinger_encoder_deps="libschroedinger"
2281 libshine_encoder_deps="libshine"
2282 libshine_encoder_select="audio_frame_queue"
2283 libspeex_decoder_deps="libspeex"
2284 libspeex_encoder_deps="libspeex"
2285 libspeex_encoder_select="audio_frame_queue"
2286 libstagefright_h264_decoder_deps="libstagefright_h264"
2287 libtheora_encoder_deps="libtheora"
2288 libtwolame_encoder_deps="libtwolame"
2289 libvo_aacenc_encoder_deps="libvo_aacenc"
2290 libvo_aacenc_encoder_select="audio_frame_queue"
2291 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2292 libvorbis_decoder_deps="libvorbis"
2293 libvorbis_encoder_deps="libvorbis"
2294 libvorbis_encoder_select="audio_frame_queue"
2295 libvpx_vp8_decoder_deps="libvpx"
2296 libvpx_vp8_encoder_deps="libvpx"
2297 libvpx_vp9_decoder_deps="libvpx"
2298 libvpx_vp9_encoder_deps="libvpx"
2299 libwavpack_encoder_deps="libwavpack"
2300 libwebp_encoder_deps="libwebp"
2301 libx264_encoder_deps="libx264"
2302 libx264rgb_encoder_deps="libx264"
2303 libx265_encoder_deps="libx265"
2304 libxavs_encoder_deps="libxavs"
2305 libxvid_encoder_deps="libxvid"
2306 libutvideo_decoder_deps="libutvideo"
2307 libutvideo_encoder_deps="libutvideo"
2308 libzvbi_teletext_decoder_deps="libzvbi"
2309
2310 # demuxers / muxers
2311 ac3_demuxer_select="ac3_parser"
2312 asf_demuxer_select="riffdec"
2313 asf_muxer_select="riffenc"
2314 asf_stream_muxer_select="asf_muxer"
2315 avi_demuxer_select="riffdec exif"
2316 avi_muxer_select="riffenc"
2317 avisynth_demuxer_deps="avisynth"
2318 avisynth_demuxer_select="riffdec"
2319 caf_demuxer_select="riffdec"
2320 dirac_demuxer_select="dirac_parser"
2321 dts_demuxer_select="dca_parser"
2322 dtshd_demuxer_select="dca_parser"
2323 dxa_demuxer_select="riffdec"
2324 eac3_demuxer_select="ac3_parser"
2325 f4v_muxer_select="mov_muxer"
2326 flac_demuxer_select="flac_parser"
2327 hds_muxer_select="flv_muxer"
2328 hls_muxer_select="mpegts_muxer"
2329 image2_alias_pix_demuxer_select="image2_demuxer"
2330 image2_brender_pix_demuxer_select="image2_demuxer"
2331 ipod_muxer_select="mov_muxer"
2332 ismv_muxer_select="mov_muxer"
2333 libnut_demuxer_deps="libnut"
2334 libnut_muxer_deps="libnut"
2335 matroska_audio_muxer_select="matroska_muxer"
2336 matroska_demuxer_select="riffdec"
2337 matroska_demuxer_suggest="bzlib lzo zlib"
2338 matroska_muxer_select="riffenc"
2339 mmf_muxer_select="riffenc"
2340 mov_demuxer_select="riffdec"
2341 mov_demuxer_suggest="zlib"
2342 mov_muxer_select="riffenc rtpenc_chain"
2343 mp3_demuxer_select="mpegaudio_parser"
2344 mp4_muxer_select="mov_muxer"
2345 mpegts_muxer_select="adts_muxer latm_muxer"
2346 mpegtsraw_demuxer_select="mpegts_demuxer"
2347 mxf_d10_muxer_select="mxf_muxer"
2348 nut_muxer_select="riffenc"
2349 nuv_demuxer_select="riffdec"
2350 ogg_demuxer_select="golomb"
2351 psp_muxer_select="mov_muxer"
2352 rtp_demuxer_select="sdp_demuxer"
2353 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2354 rtsp_demuxer_select="http_protocol rtpdec"
2355 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2356 sap_demuxer_select="sdp_demuxer"
2357 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2358 sdp_demuxer_select="rtpdec"
2359 smoothstreaming_muxer_select="ismv_muxer"
2360 spdif_muxer_select="aac_parser"
2361 tak_demuxer_select="tak_parser"
2362 tg2_muxer_select="mov_muxer"
2363 tgp_muxer_select="mov_muxer"
2364 vobsub_demuxer_select="mpegps_demuxer"
2365 w64_demuxer_select="wav_demuxer"
2366 w64_muxer_select="wav_muxer"
2367 wav_demuxer_select="riffdec"
2368 wav_muxer_select="riffenc"
2369 webm_muxer_select="riffenc"
2370 wtv_demuxer_select="riffdec"
2371 wtv_muxer_select="riffenc"
2372 xmv_demuxer_select="riffdec"
2373 xwma_demuxer_select="riffdec"
2374
2375 # indevs / outdevs
2376 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2377 alsa_outdev_deps="alsa_asoundlib_h"
2378 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2379 avfoundation_indev_select="avfoundation"
2380 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2381 caca_outdev_deps="libcaca"
2382 decklink_outdev_deps="decklink pthreads"
2383 decklink_outdev_extralibs="-lstdc++"
2384 dshow_indev_deps="IBaseFilter"
2385 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2386 dv1394_indev_deps="dv1394"
2387 dv1394_indev_select="dv_demuxer"
2388 fbdev_indev_deps="linux_fb_h"
2389 fbdev_outdev_deps="linux_fb_h"
2390 gdigrab_indev_deps="CreateDIBSection"
2391 gdigrab_indev_extralibs="-lgdi32"
2392 gdigrab_indev_select="bmp_decoder"
2393 iec61883_indev_deps="libiec61883"
2394 jack_indev_deps="jack_jack_h sem_timedwait"
2395 lavfi_indev_deps="avfilter"
2396 libcdio_indev_deps="libcdio"
2397 libdc1394_indev_deps="libdc1394"
2398 libv4l2_indev_deps="libv4l2"
2399 openal_indev_deps="openal"
2400 opengl_outdev_deps="opengl"
2401 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2402 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2403 pulse_indev_deps="libpulse"
2404 pulse_outdev_deps="libpulse"
2405 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2406 qtkit_indev_select="qtkit"
2407 sdl_outdev_deps="sdl"
2408 sndio_indev_deps="sndio_h"
2409 sndio_outdev_deps="sndio_h"
2410 v4l_indev_deps="linux_videodev_h"
2411 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2412 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2413 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2414 vfwcap_indev_extralibs="-lavicap32"
2415 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2416 xv_outdev_extralibs="-lXv -lX11 -lXext"
2417 x11grab_indev_deps="x11grab"
2418
2419 # protocols
2420 bluray_protocol_deps="libbluray"
2421 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2422 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2423 ffrtmpcrypt_protocol_select="tcp_protocol"
2424 ffrtmphttp_protocol_deps="!librtmp_protocol"
2425 ffrtmphttp_protocol_select="http_protocol"
2426 ftp_protocol_select="tcp_protocol"
2427 gopher_protocol_select="network"
2428 http_protocol_select="tcp_protocol"
2429 httpproxy_protocol_select="tcp_protocol"
2430 https_protocol_select="tls_protocol"
2431 librtmp_protocol_deps="librtmp"
2432 librtmpe_protocol_deps="librtmp"
2433 librtmps_protocol_deps="librtmp"
2434 librtmpt_protocol_deps="librtmp"
2435 librtmpte_protocol_deps="librtmp"
2436 libssh_protocol_deps="libssh"
2437 mmsh_protocol_select="http_protocol"
2438 mmst_protocol_select="network"
2439 rtmp_protocol_deps="!librtmp_protocol"
2440 rtmp_protocol_select="tcp_protocol"
2441 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2442 rtmps_protocol_deps="!librtmp_protocol"
2443 rtmps_protocol_select="tls_protocol"
2444 rtmpt_protocol_select="ffrtmphttp_protocol"
2445 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2446 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2447 rtp_protocol_select="udp_protocol"
2448 sctp_protocol_deps="struct_sctp_event_subscribe"
2449 sctp_protocol_select="network"
2450 srtp_protocol_select="rtp_protocol"
2451 tcp_protocol_select="network"
2452 tls_protocol_deps_any="openssl gnutls"
2453 tls_protocol_select="tcp_protocol"
2454 udp_protocol_select="network"
2455 unix_protocol_deps="sys_un_h"
2456 unix_protocol_select="network"
2457
2458 # filters
2459 aconvert_filter_deps="swresample"
2460 amovie_filter_deps="avcodec avformat"
2461 aresample_filter_deps="swresample"
2462 ass_filter_deps="libass"
2463 asyncts_filter_deps="avresample"
2464 atempo_filter_deps="avcodec"
2465 atempo_filter_select="rdft"
2466 azmq_filter_deps="libzmq"
2467 blackframe_filter_deps="gpl"
2468 boxblur_filter_deps="gpl"
2469 bs2b_filter_deps="libbs2b"
2470 colormatrix_filter_deps="gpl"
2471 cropdetect_filter_deps="gpl"
2472 dctdnoiz_filter_deps="avcodec"
2473 dctdnoiz_filter_select="dct"
2474 delogo_filter_deps="gpl"
2475 deshake_filter_deps="avcodec"
2476 deshake_filter_select="dsputil"
2477 drawtext_filter_deps="libfreetype"
2478 ebur128_filter_deps="gpl"
2479 flite_filter_deps="libflite"
2480 frei0r_filter_deps="frei0r dlopen"
2481 frei0r_filter_extralibs='$ldl'
2482 frei0r_src_filter_deps="frei0r dlopen"
2483 frei0r_src_filter_extralibs='$ldl'
2484 geq_filter_deps="gpl"
2485 histeq_filter_deps="gpl"
2486 hqdn3d_filter_deps="gpl"
2487 interlace_filter_deps="gpl"
2488 kerndeint_filter_deps="gpl"
2489 ladspa_filter_deps="ladspa dlopen"
2490 mcdeint_filter_deps="avcodec gpl"
2491 movie_filter_deps="avcodec avformat"
2492 mp_filter_deps="gpl avcodec swscale inline_asm"
2493 mpdecimate_filter_deps="gpl avcodec"
2494 mptestsrc_filter_deps="gpl"
2495 negate_filter_deps="lut_filter"
2496 perspective_filter_deps="gpl"
2497 ocv_filter_deps="libopencv"
2498 owdenoise_filter_deps="gpl"
2499 pan_filter_deps="swresample"
2500 phase_filter_deps="gpl"
2501 pp_filter_deps="gpl postproc"
2502 pullup_filter_deps="gpl"
2503 removelogo_filter_deps="avcodec avformat swscale"
2504 resample_filter_deps="avresample"
2505 sab_filter_deps="gpl swscale"
2506 scale_filter_deps="swscale"
2507 smartblur_filter_deps="gpl swscale"
2508 showspectrum_filter_deps="avcodec"
2509 showspectrum_filter_select="rdft"
2510 spp_filter_deps="gpl avcodec"
2511 spp_filter_select="fft"
2512 stereo3d_filter_deps="gpl"
2513 subtitles_filter_deps="avformat avcodec libass"
2514 super2xsai_filter_deps="gpl"
2515 tinterlace_filter_deps="gpl"
2516 vidstabdetect_filter_deps="libvidstab"
2517 vidstabtransform_filter_deps="libvidstab"
2518 pixfmts_super2xsai_test_deps="super2xsai_filter"
2519 tinterlace_merge_test_deps="tinterlace_filter"
2520 tinterlace_pad_test_deps="tinterlace_filter"
2521 zmq_filter_deps="libzmq"
2522
2523 # examples
2524 avio_reading="avformat avcodec avutil"
2525 avcodec_example_deps="avcodec avutil"
2526 demuxing_decoding_example_deps="avcodec avformat avutil"
2527 filter_audio_example_deps="avfilter avutil"
2528 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2529 filtering_video_example_deps="avfilter avcodec avformat avutil"
2530 metadata_example_deps="avformat avutil"
2531 muxing_example_deps="avcodec avformat avutil swscale"
2532 remuxing_example_deps="avcodec avformat avutil"
2533 resampling_audio_example_deps="avutil swresample"
2534 scaling_video_example_deps="avutil swscale"
2535 transcode_aac_example_deps="avcodec avformat swresample"
2536 transcoding_example_deps="avfilter avcodec avformat avutil"
2537
2538 # libraries
2539 avcodec_deps="avutil"
2540 avdevice_deps="avutil avcodec avformat"
2541 avfilter_deps="avutil"
2542 avformat_deps="avutil avcodec"
2543 avresample_deps="avutil"
2544 postproc_deps="avutil gpl"
2545 swscale_deps="avutil"
2546
2547 # programs
2548 ffmpeg_deps="avcodec avfilter avformat swresample"
2549 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2550                null_filter
2551                setpts_filter trim_filter"
2552 ffplay_deps="avcodec avformat swscale swresample sdl"
2553 ffplay_libs='$sdl_libs'
2554 ffplay_select="rdft crop_filter"
2555 ffprobe_deps="avcodec avformat"
2556 ffserver_deps="avformat fork sarestart"
2557 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2558
2559 # documentation
2560 podpages_deps="perl"
2561 manpages_deps="perl pod2man"
2562 htmlpages_deps="perl texi2html"
2563 txtpages_deps="perl makeinfo"
2564 doc_deps_any="manpages htmlpages podpages txtpages"
2565
2566 # default parameters
2567
2568 logfile="config.log"
2569
2570 # installation paths
2571 prefix_default="/usr/local"
2572 bindir_default='${prefix}/bin'
2573 datadir_default='${prefix}/share/ffmpeg'
2574 docdir_default='${prefix}/share/doc/ffmpeg'
2575 incdir_default='${prefix}/include'
2576 libdir_default='${prefix}/lib'
2577 mandir_default='${prefix}/share/man'
2578 shlibdir_default="$libdir_default"
2579
2580 # toolchain
2581 ar_default="ar"
2582 cc_default="gcc"
2583 cxx_default="g++"
2584 host_cc_default="gcc"
2585 cp_f="cp -f"
2586 install="install"
2587 ln_s="ln -s -f"
2588 nm_default="nm -g"
2589 objformat="elf"
2590 pkg_config_default=pkg-config
2591 ranlib_default="ranlib"
2592 strip_default="strip"
2593 yasmexe_default="yasm"
2594 windres_default="windres"
2595
2596 nogas=":"
2597
2598 # OS
2599 target_os_default=$(tolower $(uname -s))
2600 host_os=$target_os_default
2601
2602 # machine
2603 if test "$target_os_default" = aix; then
2604     arch_default=$(uname -p)
2605 else
2606     arch_default=$(uname -m)
2607 fi
2608 cpu="generic"
2609
2610 # configurable options
2611 enable $PROGRAM_LIST
2612 enable $DOCUMENT_LIST
2613 enable $EXAMPLE_LIST
2614 enable $(filter_out avresample $LIBRARY_LIST)
2615 enable stripping
2616
2617 enable asm
2618 enable debug
2619 enable doc
2620 enable optimizations
2621 enable runtime_cpudetect
2622 enable safe_bitstream_reader
2623 enable static
2624 enable swscale_alpha
2625
2626 # Enable hwaccels by default.
2627 enable dxva2 vaapi vda vdpau xvmc
2628 enable xlib
2629
2630 # build settings
2631 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2632 LIBPREF="lib"
2633 LIBSUF=".a"
2634 FULLNAME='$(NAME)$(BUILDSUF)'
2635 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2636 SLIBPREF="lib"
2637 SLIBSUF=".so"
2638 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2639 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2640 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2641 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2642 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2643 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2644
2645 asflags_filter=echo
2646 cflags_filter=echo
2647 ldflags_filter=echo
2648
2649 AS_C='-c'
2650 AS_O='-o $@'
2651 CC_C='-c'
2652 CC_E='-E -o $@'
2653 CC_O='-o $@'
2654 CXX_C='-c'
2655 CXX_O='-o $@'
2656 LD_O='-o $@'
2657 LD_LIB='-l%'
2658 LD_PATH='-L'
2659 HOSTCC_C='-c'
2660 HOSTCC_E='-E -o $@'
2661 HOSTCC_O='-o $@'
2662 HOSTLD_O='-o $@'
2663
2664 host_libs='-lm'
2665 host_cflags_filter=echo
2666 host_ldflags_filter=echo
2667
2668 target_path='$(CURDIR)'
2669
2670 # since the object filename is not given with the -MM flag, the compiler
2671 # is only able to print the basename, and we must add the path ourselves
2672 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2673 DEPFLAGS='-MM'
2674
2675 # find source path
2676 if test -f configure; then
2677     source_path=.
2678 else
2679     source_path=$(cd $(dirname "$0"); pwd)
2680     echo "$source_path" | grep -q '[[:blank:]]' &&
2681         die "Out of tree builds are impossible with whitespace in source path."
2682     test -e "$source_path/config.h" &&
2683         die "Out of tree builds are impossible with config.h in source dir."
2684 fi
2685
2686 for v in "$@"; do
2687     r=${v#*=}
2688     l=${v%"$r"}
2689     r=$(sh_quote "$r")
2690     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2691 done
2692
2693 find_things(){
2694     thing=$1
2695     pattern=$2
2696     file=$source_path/$3
2697     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2698 }
2699
2700 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2701 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2702 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2703 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2704 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2705 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2706 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2707 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2708 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2709 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2710 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2711
2712 ALL_COMPONENTS="
2713     $BSF_LIST
2714     $DECODER_LIST
2715     $DEMUXER_LIST
2716     $ENCODER_LIST
2717     $FILTER_LIST
2718     $HWACCEL_LIST
2719     $INDEV_LIST
2720     $MUXER_LIST
2721     $OUTDEV_LIST
2722     $PARSER_LIST
2723     $PROTOCOL_LIST
2724 "
2725
2726 for n in $COMPONENT_LIST; do
2727     v=$(toupper ${n%s})_LIST
2728     eval enable \$$v
2729     eval ${n}_if_any="\$$v"
2730 done
2731
2732 enable $ARCH_EXT_LIST
2733
2734 die_unknown(){
2735     echo "Unknown option \"$1\"."
2736     echo "See $0 --help for available options."
2737     exit 1
2738 }
2739
2740 print_3_columns() {
2741     cat | tr ' ' '\n' | sort | pr -r -3 -t
2742 }
2743
2744 show_list() {
2745     suffix=_$1
2746     shift
2747     echo $* | sed s/$suffix//g | print_3_columns
2748     exit 0
2749 }
2750
2751 rand_list(){
2752     IFS=', '
2753     set -- $*
2754     unset IFS
2755     for thing; do
2756         comp=${thing%:*}
2757         prob=${thing#$comp}
2758         prob=${prob#:}
2759         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2760         echo "prob ${prob:-0.5}"
2761         printf '%s\n' $comp
2762     done
2763 }
2764
2765 do_random(){
2766     action=$1
2767     shift
2768     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2769     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2770 }
2771
2772 for opt do
2773     optval="${opt#*=}"
2774     case "$opt" in
2775         --extra-ldflags=*)
2776             add_ldflags $optval
2777         ;;
2778         --extra-libs=*)
2779             add_extralibs $optval
2780         ;;
2781         --disable-devices)
2782             disable $INDEV_LIST $OUTDEV_LIST
2783         ;;
2784         --enable-debug=*)
2785             debuglevel="$optval"
2786         ;;
2787         --disable-programs)
2788             disable $PROGRAM_LIST
2789         ;;
2790         --disable-everything)
2791             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2792         ;;
2793         --disable-all)
2794             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2795             disable $LIBRARY_LIST $PROGRAM_LIST doc
2796         ;;
2797         --enable-random|--disable-random)
2798             action=${opt%%-random}
2799             do_random ${action#--} $COMPONENT_LIST
2800         ;;
2801         --enable-random=*|--disable-random=*)
2802             action=${opt%%-random=*}
2803             do_random ${action#--} $optval
2804         ;;
2805         --enable-*=*|--disable-*=*)
2806             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2807             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2808             eval list=\$$(toupper $thing)_LIST
2809             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2810             list=$(filter "$name" $list)
2811             [ "$list" = "" ] && warn "Option $opt did not match anything"
2812             $action $list
2813         ;;
2814         --enable-?*|--disable-?*)
2815             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2816             if is_in $option $COMPONENT_LIST; then
2817                 test $action = disable && action=unset
2818                 eval $action \$$(toupper ${option%s})_LIST
2819             elif is_in $option $CMDLINE_SELECT; then
2820                 $action $option
2821             else
2822                 die_unknown $opt
2823             fi
2824         ;;
2825         --list-*)
2826             NAME="${opt#--list-}"
2827             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2828             NAME=${NAME%s}
2829             eval show_list $NAME \$$(toupper $NAME)_LIST
2830         ;;
2831         --help|-h) show_help
2832         ;;
2833         --fatal-warnings) enable fatal_warnings
2834         ;;
2835         *)
2836             optname="${opt%%=*}"
2837             optname="${optname#--}"
2838             optname=$(echo "$optname" | sed 's/-/_/g')
2839             if is_in $optname $CMDLINE_SET; then
2840                 eval $optname='$optval'
2841             elif is_in $optname $CMDLINE_APPEND; then
2842                 append $optname "$optval"
2843             else
2844                 die_unknown $opt
2845             fi
2846         ;;
2847     esac
2848 done
2849
2850 disabled logging && logfile=/dev/null
2851
2852 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2853 set >> $logfile
2854
2855 test -n "$cross_prefix" && enable cross_compile
2856
2857 if enabled cross_compile; then
2858     test -n "$arch" && test -n "$target_os" ||
2859         die "Must specify target arch and OS when cross-compiling"
2860 fi
2861
2862 ar_default="${cross_prefix}${ar_default}"
2863 cc_default="${cross_prefix}${cc_default}"
2864 cxx_default="${cross_prefix}${cxx_default}"
2865 nm_default="${cross_prefix}${nm_default}"
2866 pkg_config_default="${cross_prefix}${pkg_config_default}"
2867 ranlib_default="${cross_prefix}${ranlib_default}"
2868 strip_default="${cross_prefix}${strip_default}"
2869 windres_default="${cross_prefix}${windres_default}"
2870
2871 sysinclude_default="${sysroot}/usr/include"
2872
2873 test -n "$valgrind" && toolchain="valgrind-memcheck"
2874
2875 case "$toolchain" in
2876     clang-asan)
2877         cc_default="clang"
2878         add_cflags  -fsanitize=address
2879         add_ldflags -fsanitize=address
2880     ;;
2881     clang-tsan)
2882         cc_default="clang"
2883         add_cflags  -fsanitize=thread -pie
2884         add_ldflags -fsanitize=thread -pie
2885     ;;
2886     clang-usan)
2887         cc_default="clang"
2888         add_cflags  -fsanitize=undefined
2889         add_ldflags -fsanitize=undefined
2890     ;;
2891     gcc-asan)
2892         cc_default="gcc"
2893         add_cflags  -fsanitize=address
2894         add_ldflags -fsanitize=address
2895     ;;
2896     gcc-tsan)
2897         cc_default="gcc"
2898         add_cflags  -fsanitize=thread -pie -fPIC
2899         add_ldflags -fsanitize=thread -pie -fPIC
2900     ;;
2901     gcc-usan)
2902         cc_default="gcc"
2903         add_cflags  -fsanitize=undefined
2904         add_ldflags -fsanitize=undefined
2905     ;;
2906     valgrind-massif)
2907         target_exec_default=${valgrind:-"valgrind"}
2908         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"
2909     ;;
2910     valgrind-memcheck)
2911         target_exec_default=${valgrind:-"valgrind"}
2912         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2913     ;;
2914     msvc)
2915         # Check whether the current MSVC version needs the C99 converter.
2916         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2917         # support enough of C99 to build ffmpeg. Default to the new
2918         # behaviour if the regexp was unable to match anything, since this
2919         # successfully parses the version number of existing supported
2920         # versions that require the converter (MSVC 2010 and 2012).
2921         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2922         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2923             cc_default="cl"
2924         else
2925             cc_default="c99wrap cl"
2926         fi
2927         ld_default="link"
2928         nm_default="dumpbin -symbols"
2929         ar_default="lib"
2930         target_os_default="win32"
2931         # Use a relative path for TMPDIR. This makes sure all the
2932         # ffconf temp files are written with a relative path, avoiding
2933         # issues with msys/win32 path conversion for MSVC parameters
2934         # such as -Fo<file> or -out:<file>.
2935         TMPDIR=.
2936     ;;
2937     icl)
2938         cc_default="icl"
2939         ld_default="xilink"
2940         nm_default="dumpbin -symbols"
2941         ar_default="xilib"
2942         target_os_default="win32"
2943         TMPDIR=.
2944     ;;
2945     gcov)
2946         add_cflags  -fprofile-arcs -ftest-coverage
2947         add_ldflags -fprofile-arcs -ftest-coverage
2948     ;;
2949     hardened)
2950         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2951         add_ldflags -Wl,-z,relro -Wl,-z,now
2952     ;;
2953     ?*)
2954         die "Unknown toolchain $toolchain"
2955     ;;
2956 esac
2957
2958 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2959 enabled cross_compile || host_cc_default=$cc
2960 set_default host_cc
2961
2962 if ! $pkg_config --version >/dev/null 2>&1; then
2963     warn "$pkg_config not found, library detection may fail."
2964     pkg_config=false
2965 fi
2966
2967 exesuf() {
2968     case $1 in
2969         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2970     esac
2971 }
2972
2973 EXESUF=$(exesuf $target_os)
2974 HOSTEXESUF=$(exesuf $host_os)
2975
2976 # set temporary file name
2977 : ${TMPDIR:=$TEMPDIR}
2978 : ${TMPDIR:=$TMP}
2979 : ${TMPDIR:=/tmp}
2980
2981 if [ -n "$tempprefix" ] ; then
2982     mktemp(){
2983         echo $tempprefix.${HOSTNAME}.${UID}
2984     }
2985 elif ! check_cmd mktemp -u XXXXXX; then
2986     # simple replacement for missing mktemp
2987     # NOT SAFE FOR GENERAL USE
2988     mktemp(){
2989         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2990     }
2991 fi
2992
2993 tmpfile(){
2994     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2995         (set -C; exec > $tmp) 2>/dev/null ||
2996         die "Unable to create temporary file in $TMPDIR."
2997     append TMPFILES $tmp
2998     eval $1=$tmp
2999 }
3000
3001 trap 'rm -f -- $TMPFILES' EXIT
3002
3003 tmpfile TMPASM .asm
3004 tmpfile TMPC   .c
3005 tmpfile TMPCPP .cpp
3006 tmpfile TMPE   $EXESUF
3007 tmpfile TMPH   .h
3008 tmpfile TMPM   .m
3009 tmpfile TMPO   .o
3010 tmpfile TMPS   .S
3011 tmpfile TMPSH  .sh
3012 tmpfile TMPV   .ver
3013
3014 unset -f mktemp
3015
3016 chmod +x $TMPE
3017
3018 # make sure we can execute files in $TMPDIR
3019 cat > $TMPSH 2>> $logfile <<EOF
3020 #! /bin/sh
3021 EOF
3022 chmod +x $TMPSH >> $logfile 2>&1
3023 if ! $TMPSH >> $logfile 2>&1; then
3024     cat <<EOF
3025 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3026 variable to another directory and make sure that it is not mounted noexec.
3027 EOF
3028     die "Sanity test failed."
3029 fi
3030
3031 ccc_flags(){
3032     for flag; do
3033         case $flag in
3034             -std=c99)           echo -c99                       ;;
3035             -mcpu=*)            echo -arch ${flag#*=}           ;;
3036             -mieee)             echo -ieee                      ;;
3037             -O*|-fast)          echo $flag                      ;;
3038             -fno-math-errno)    echo -assume nomath_errno       ;;
3039             -g)                 echo -g3                        ;;
3040             -Wall)              echo -msg_enable level2         ;;
3041             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3042             -Wl,*)              echo $flag                      ;;
3043             -f*|-W*)                                            ;;
3044             *)                  echo $flag                      ;;
3045         esac
3046    done
3047 }
3048
3049 cparser_flags(){
3050     for flag; do
3051         case $flag in
3052             -Wno-switch)             echo -Wno-switch-enum ;;
3053             -Wno-format-zero-length) ;;
3054             -Wdisabled-optimization) ;;
3055             -Wno-pointer-sign)       echo -Wno-other ;;
3056             *)                       echo $flag ;;
3057         esac
3058     done
3059 }
3060
3061 msvc_common_flags(){
3062     for flag; do
3063         case $flag in
3064             # In addition to specifying certain flags under the compiler
3065             # specific filters, they must be specified here as well or else the
3066             # generic catch all at the bottom will print the original flag.
3067             -Wall)                ;;
3068             -std=c99)             ;;
3069             # Common flags
3070             -fomit-frame-pointer) ;;
3071             -g)                   echo -Z7 ;;
3072             -fno-math-errno)      ;;
3073             -fno-common)          ;;
3074             -fno-signed-zeros)    ;;
3075             -fPIC)                ;;
3076             -mthumb)              ;;
3077             -march=*)             ;;
3078             -lz)                  echo zlib.lib ;;
3079             -lavifil32)           echo vfw32.lib ;;
3080             -lavicap32)           echo vfw32.lib user32.lib ;;
3081             -l*)                  echo ${flag#-l}.lib ;;
3082             *)                    echo $flag ;;
3083         esac
3084     done
3085 }
3086
3087 msvc_flags(){
3088     msvc_common_flags "$@"
3089     for flag; do
3090         case $flag in
3091             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3092                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3093                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3094                                        -wd4554 \
3095                                        -wd4273 ;;
3096         esac
3097     done
3098 }
3099
3100 icl_flags(){
3101     msvc_common_flags "$@"
3102     for flag; do
3103         case $flag in
3104             # Despite what Intel's documentation says -Wall, which is supported
3105             # on Windows, does enable remarks so disable them here.
3106             -Wall)                echo $flag -Qdiag-disable:remark ;;
3107             -std=c99)             echo -Qstd=c99 ;;
3108         esac
3109     done
3110 }
3111
3112 icc_flags(){
3113     for flag; do
3114         case $flag in
3115             -flto)                echo -ipo ;;
3116             *)                    echo $flag ;;
3117         esac
3118     done
3119 }
3120
3121 pgi_flags(){
3122     for flag; do
3123         case $flag in
3124             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3125             -fomit-frame-pointer) echo -Mnoframe ;;
3126             -g)                   echo -gopt ;;
3127             *)                    echo $flag ;;
3128         esac
3129     done
3130 }
3131
3132 suncc_flags(){
3133     for flag; do
3134         case $flag in
3135             -march=*|-mcpu=*)
3136                 case "${flag#*=}" in
3137                     native)                   echo -xtarget=native       ;;
3138                     v9|niagara)               echo -xarch=sparc          ;;
3139                     ultrasparc)               echo -xarch=sparcvis       ;;
3140                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3141                     i586|pentium)             echo -xchip=pentium        ;;
3142                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3143                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3144                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3145                     pentium4*)          echo -xtarget=pentium4           ;;
3146                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3147                     *-sse3)             echo -xarch=sse3                 ;;
3148                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3149                     bonnell)                   echo -xarch=ssse3         ;;
3150                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3151                     westmere)                  echo -xtarget=westmere    ;;
3152                     silvermont)                echo -xarch=sse4_2        ;;
3153                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3154                     core-avx*|ivybridge|haswell|broadwell)
3155                                                echo -xarch=avx           ;;
3156                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3157                     btver1)                    echo -xarch=amdsse4a      ;;
3158                     btver2|bdver*)             echo -xarch=avx           ;;
3159                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3160                     k8|opteron|athlon64|athlon-fx)
3161                                                echo -xarch=sse2a         ;;
3162                     athlon*)                   echo -xarch=pentium_proa  ;;
3163                 esac
3164                 ;;
3165             -std=c99)             echo -xc99              ;;
3166             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3167             -fPIC)                echo -KPIC -xcode=pic32 ;;
3168             -W*,*)                echo $flag              ;;
3169             -f*-*|-W*|-mimpure-text)                      ;;
3170             -shared)              echo -G                 ;;
3171             *)                    echo $flag              ;;
3172         esac
3173     done
3174 }
3175
3176 tms470_flags(){
3177     for flag; do
3178         case $flag in
3179             -march=*|-mcpu=*)
3180                 case "${flag#*=}" in
3181                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3182                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3183                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3184                     armv6*|arm11*)          echo -mv=6   ;;
3185                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3186                                             echo -mv=5e  ;;
3187                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3188                 esac
3189                 ;;
3190             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3191             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3192             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3193             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3194             -msoft-float)   echo --float_support=vfplib       ;;
3195             -O[0-3]|-mf=*)  echo $flag                        ;;
3196             -g)             echo -g -mn                       ;;
3197             -pds=*)         echo $flag                        ;;
3198             -D*|-I*)        echo $flag                        ;;
3199             --gcc|--abi=*)  echo $flag                        ;;
3200             -me)            echo $flag                        ;;
3201         esac
3202     done
3203 }
3204
3205 probe_cc(){
3206     pfx=$1
3207     _cc=$2
3208
3209     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3210     unset _ld_o _ldflags _ld_lib _ld_path
3211     unset _depflags _DEPCMD _DEPFLAGS
3212     _flags_filter=echo
3213
3214     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3215         true # no-op to avoid reading stdin in following checks
3216     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3217         _type=llvm_gcc
3218         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3219         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3221         _cflags_speed='-O3'
3222         _cflags_size='-Os'
3223     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3224         _type=gcc
3225         gcc_version=$($_cc --version | head -n1)
3226         gcc_basever=$($_cc -dumpversion)
3227         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3228         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3229         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3230         if ! $_cc -dumpversion | grep -q '^2\.'; then
3231             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3232         fi
3233         _cflags_speed='-O3'
3234         _cflags_size='-Os'
3235     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3236         _type=icc
3237         _ident=$($_cc --version | head -n1)
3238         _depflags='-MMD'
3239         _cflags_speed='-O3'
3240         _cflags_size='-Os'
3241         _cflags_noopt='-O1'
3242         _flags_filter=icc_flags
3243     elif $_cc -v 2>&1 | grep -q xlc; then
3244         _type=xlc
3245         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3246         _cflags_speed='-O5'
3247         _cflags_size='-O5 -qcompact'
3248     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3249         _type=ccc
3250         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3251         _DEPFLAGS='-M'
3252         _cflags_speed='-fast'
3253         _cflags_size='-O1'
3254         _flags_filter=ccc_flags
3255     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3256         test -d "$sysroot" || die "No valid sysroot specified."
3257         _type=armcc
3258         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3259         armcc_conf="$PWD/armcc.conf"
3260         $_cc --arm_linux_configure                 \
3261              --arm_linux_config_file="$armcc_conf" \
3262              --configure_sysroot="$sysroot"        \
3263              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3264              die "Error creating armcc configuration file."
3265         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3266         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3267         as_default="${cross_prefix}gcc"
3268         _depflags='-MMD'
3269         _cflags_speed='-O3'
3270         _cflags_size='-Os'
3271     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3272         _type=tms470
3273         _ident=$($_cc -version | head -n1 | tr -s ' ')
3274         _flags='--gcc --abi=eabi -me'
3275         _cc_e='-ppl -fe=$@'
3276         _cc_o='-fe=$@'
3277         _depflags='-ppa -ppd=$(@:.o=.d)'
3278         _cflags_speed='-O3 -mf=5'
3279         _cflags_size='-O3 -mf=2'
3280         _flags_filter=tms470_flags
3281     elif $_cc -v 2>&1 | grep -q clang; then
3282         _type=clang
3283         _ident=$($_cc --version | head -n1)
3284         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3285         _cflags_speed='-O3'
3286         _cflags_size='-Os'
3287     elif $_cc -V 2>&1 | grep -q Sun; then
3288         _type=suncc
3289         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3291         _DEPFLAGS='-xM1 -xc99'
3292         _ldflags='-std=c99'
3293         _cflags_speed='-O5'
3294         _cflags_size='-O5 -xspace'
3295         _flags_filter=suncc_flags
3296     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3297         _type=pathscale
3298         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3300         _cflags_speed='-O2'
3301         _cflags_size='-Os'
3302         _flags_filter='filter_out -Wdisabled-optimization'
3303     elif $_cc -v 2>&1 | grep -q Open64; then
3304         _type=open64
3305         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3306         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3307         _cflags_speed='-O2'
3308         _cflags_size='-Os'
3309         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3310     elif $_cc -V 2>&1 | grep -q Portland; then
3311         _type=pgi
3312         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3313         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3314         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3315         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3316         _cflags_noopt="-O"
3317         _flags_filter=pgi_flags
3318     elif $_cc 2>&1 | grep -q Microsoft; then
3319         _type=msvc
3320         _ident=$($cc 2>&1 | head -n1)
3321         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3322         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3323         _cflags_speed="-O2"
3324         _cflags_size="-O1"
3325         if $_cc 2>&1 | grep -q Linker; then
3326             _ld_o='-out:$@'
3327         else
3328             _ld_o='-Fe$@'
3329         fi
3330         _cc_o='-Fo$@'
3331         _cc_e='-P -Fi$@'
3332         _flags_filter=msvc_flags
3333         _ld_lib='lib%.a'
3334         _ld_path='-libpath:'
3335         _flags='-nologo'
3336         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3337         if [ $pfx = hostcc ]; then
3338             append _cflags -Dsnprintf=_snprintf
3339         fi
3340         disable stripping
3341     elif $_cc 2>&1 | grep -q Intel; then
3342         _type=icl
3343         _ident=$($cc 2>&1 | head -n1)
3344         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3345         # Not only is O3 broken on 13.x+ but it is slower on all previous
3346         # versions (tested) as well.
3347         _cflags_speed="-O2"
3348         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3349         if $_cc 2>&1 | grep -q Linker; then
3350             _ld_o='-out:$@'
3351         else
3352             _ld_o='-Fe$@'
3353         fi
3354         _cc_o='-Fo$@'
3355         _cc_e='-P'
3356         _flags_filter=icl_flags
3357         _ld_lib='lib%.a'
3358         _ld_path='-libpath:'
3359         # -Qdiag-error to make icl error when seeing certain unknown arguments
3360         _flags='-nologo -Qdiag-error:4044,10157'
3361         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3362         # with MSVC which enables it by default.
3363         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3364         if [ $pfx = hostcc ]; then
3365             append _cflags -Dsnprintf=_snprintf
3366         fi
3367     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3368         _type=cparser
3369         _ident=$($_cc --version | head -n1)
3370         _depflags='-MMD'
3371         _cflags_speed='-O4'
3372         _cflags_size='-O2'
3373         _flags_filter=cparser_flags
3374     fi
3375
3376     eval ${pfx}_type=\$_type
3377     eval ${pfx}_ident=\$_ident
3378 }
3379
3380 set_ccvars(){
3381     eval ${1}_C=\${_cc_c-\${${1}_C}}
3382     eval ${1}_E=\${_cc_e-\${${1}_E}}
3383     eval ${1}_O=\${_cc_o-\${${1}_O}}
3384
3385     if [ -n "$_depflags" ]; then
3386         eval ${1}_DEPFLAGS=\$_depflags
3387     else
3388         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3389         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3390         eval DEP${1}FLAGS=\$_flags
3391     fi
3392 }
3393
3394 probe_cc cc "$cc"
3395 cflags_filter=$_flags_filter
3396 cflags_speed=$_cflags_speed
3397 cflags_size=$_cflags_size
3398 cflags_noopt=$_cflags_noopt
3399 add_cflags $_flags $_cflags
3400 cc_ldflags=$_ldflags
3401 set_ccvars CC
3402
3403 probe_cc hostcc "$host_cc"
3404 host_cflags_filter=$_flags_filter
3405 add_host_cflags  $_flags $_cflags
3406 set_ccvars HOSTCC
3407
3408 test -n "$cc_type" && enable $cc_type ||
3409     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3410
3411 : ${as_default:=$cc}
3412 : ${dep_cc_default:=$cc}
3413 : ${ld_default:=$cc}
3414 : ${host_ld_default:=$host_cc}
3415 set_default ar as dep_cc ld host_ld windres
3416
3417 probe_cc as "$as"
3418 asflags_filter=$_flags_filter
3419 add_asflags $_flags $_cflags
3420 set_ccvars AS
3421
3422 probe_cc ld "$ld"
3423 ldflags_filter=$_flags_filter
3424 add_ldflags $_flags $_ldflags
3425 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3426 LD_O=${_ld_o-$LD_O}
3427 LD_LIB=${_ld_lib-$LD_LIB}
3428 LD_PATH=${_ld_path-$LD_PATH}
3429
3430 probe_cc hostld "$host_ld"
3431 host_ldflags_filter=$_flags_filter
3432 add_host_ldflags $_flags $_ldflags
3433 HOSTLD_O=${_ld_o-$HOSTLD_O}
3434
3435 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3436     probe_cc depcc "$dep_cc"
3437     CCDEP=${_DEPCMD:-$DEPCMD}
3438     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3439     DEPCCFLAGS=$_flags
3440 fi
3441
3442 if $ar 2>&1 | grep -q Microsoft; then
3443     arflags="-nologo"
3444     ar_o='-out:$@'
3445 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3446     arflags="rq"
3447     ar_o='$@'
3448 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3449     arflags='-Xany -r -c'
3450     ar_o='$@'
3451 else
3452     arflags="rc"
3453     ar_o='$@'
3454 fi
3455
3456 add_cflags $extra_cflags
3457 add_cxxflags $extra_cxxflags
3458 add_asflags $extra_cflags
3459
3460 if test -n "$sysroot"; then
3461     case "$cc_type" in
3462         gcc|llvm_gcc|clang)
3463             add_cppflags --sysroot="$sysroot"
3464             add_ldflags --sysroot="$sysroot"
3465 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3466             add_cppflags -isysroot "$sysroot"
3467             add_ldflags -isysroot "$sysroot"
3468         ;;
3469         tms470)
3470             add_cppflags -I"$sysinclude"
3471             add_ldflags  --sysroot="$sysroot"
3472         ;;
3473     esac
3474 fi
3475
3476 if test "$cpu" = host; then
3477     enabled cross_compile &&
3478         die "--cpu=host makes no sense when cross-compiling."
3479
3480     case "$cc_type" in
3481         gcc|llvm_gcc)
3482             check_native(){
3483                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3484                 sed -n "/cc1.*$1=/{
3485                             s/.*$1=\\([^ ]*\\).*/\\1/
3486                             p
3487                             q
3488                         }" $TMPE
3489             }
3490             cpu=$(check_native -march || check_native -mcpu)
3491         ;;
3492     esac
3493
3494     test "${cpu:-host}" = host &&
3495         die "--cpu=host not supported with compiler $cc"
3496 fi
3497
3498 # Deal with common $arch aliases
3499 case "$arch" in
3500     aarch64|arm64)
3501         arch="aarch64"
3502     ;;
3503     arm*|iPad*|iPhone*)
3504         arch="arm"
3505     ;;
3506     mips*|IP*)
3507         arch="mips"
3508     ;;
3509     parisc*|hppa*)
3510         arch="parisc"
3511     ;;
3512     "Power Macintosh"|ppc*|powerpc*)
3513         arch="ppc"
3514     ;;
3515     s390|s390x)
3516         arch="s390"
3517     ;;
3518     sh4|sh)
3519         arch="sh4"
3520     ;;
3521     sun4u|sparc*)
3522         arch="sparc"
3523     ;;
3524     tilegx|tile-gx)
3525         arch="tilegx"
3526     ;;
3527     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3528         arch="x86"
3529     ;;
3530 esac
3531
3532 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3533 enable $arch
3534
3535 # Add processor-specific flags
3536 if enabled aarch64; then
3537
3538     case $cpu in
3539         armv*)
3540             cpuflags="-march=$cpu"
3541         ;;
3542         *)
3543             cpuflags="-mcpu=$cpu"
3544         ;;
3545     esac
3546
3547 elif enabled alpha; then
3548
3549     cpuflags="-mcpu=$cpu"
3550
3551 elif enabled arm; then
3552
3553     check_arm_arch() {
3554         check_cpp_condition stddef.h \
3555             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3556             $cpuflags
3557     }
3558
3559     probe_arm_arch() {
3560         if   check_arm_arch 4;        then echo armv4;
3561         elif check_arm_arch 4T;       then echo armv4t;
3562         elif check_arm_arch 5;        then echo armv5;
3563         elif check_arm_arch 5E;       then echo armv5e;
3564         elif check_arm_arch 5T;       then echo armv5t;
3565         elif check_arm_arch 5TE;      then echo armv5te;
3566         elif check_arm_arch 5TEJ;     then echo armv5te;
3567         elif check_arm_arch 6;        then echo armv6;
3568         elif check_arm_arch 6J;       then echo armv6j;
3569         elif check_arm_arch 6K;       then echo armv6k;
3570         elif check_arm_arch 6Z;       then echo armv6z;
3571         elif check_arm_arch 6ZK;      then echo armv6zk;
3572         elif check_arm_arch 6T2;      then echo armv6t2;
3573         elif check_arm_arch 7;        then echo armv7;
3574         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3575         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3576         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3577         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3578         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3579         fi
3580     }
3581
3582     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3583
3584     case $cpu in
3585         armv*)
3586             cpuflags="-march=$cpu"
3587             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3588         ;;
3589         *)
3590             cpuflags="-mcpu=$cpu"
3591             case $cpu in
3592                 cortex-a*)                               subarch=armv7a  ;;
3593                 cortex-r*)                               subarch=armv7r  ;;
3594                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3595                 arm11*)                                  subarch=armv6   ;;
3596                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3597                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3598                 *)                             subarch=$(probe_arm_arch) ;;
3599             esac
3600         ;;
3601     esac
3602
3603     case "$subarch" in
3604         armv5t*)    enable fast_clz                ;;
3605         armv[6-8]*) enable fast_clz fast_unaligned ;;
3606     esac
3607
3608 elif enabled avr32; then
3609
3610     case $cpu in
3611         ap7[02]0[0-2])
3612             subarch="avr32_ap"
3613             cpuflags="-mpart=$cpu"
3614         ;;
3615         ap)
3616             subarch="avr32_ap"
3617             cpuflags="-march=$cpu"
3618         ;;
3619         uc3[ab]*)
3620             subarch="avr32_uc"
3621             cpuflags="-mcpu=$cpu"
3622         ;;
3623         uc)
3624             subarch="avr32_uc"
3625             cpuflags="-march=$cpu"
3626         ;;
3627     esac
3628
3629 elif enabled bfin; then
3630
3631     cpuflags="-mcpu=$cpu"
3632
3633 elif enabled mips; then
3634
3635     cpuflags="-march=$cpu"
3636
3637     case $cpu in
3638         24kc)
3639             disable mipsfpu
3640             disable mipsdspr1
3641             disable mipsdspr2
3642         ;;
3643         24kf*)
3644             disable mipsdspr1
3645             disable mipsdspr2
3646         ;;
3647         24kec|34kc|1004kc)
3648             disable mipsfpu
3649             disable mipsdspr2
3650         ;;
3651         24kef*|34kf*|1004kf*)
3652             disable mipsdspr2
3653         ;;
3654         74kc)
3655             disable mipsfpu
3656         ;;
3657     esac
3658
3659 elif enabled ppc; then
3660
3661     disable ldbrx
3662
3663     case $(tolower $cpu) in
3664         601|ppc601|powerpc601)
3665             cpuflags="-mcpu=601"
3666             disable altivec
3667         ;;
3668         603*|ppc603*|powerpc603*)
3669             cpuflags="-mcpu=603"
3670             disable altivec
3671         ;;
3672         604*|ppc604*|powerpc604*)
3673             cpuflags="-mcpu=604"
3674             disable altivec
3675         ;;
3676         g3|75*|ppc75*|powerpc75*)
3677             cpuflags="-mcpu=750"
3678             disable altivec
3679         ;;
3680         g4|745*|ppc745*|powerpc745*)
3681             cpuflags="-mcpu=7450"
3682         ;;
3683         74*|ppc74*|powerpc74*)
3684             cpuflags="-mcpu=7400"
3685         ;;
3686         g5|970|ppc970|powerpc970)
3687             cpuflags="-mcpu=970"
3688         ;;
3689         power[3-7]*)
3690             cpuflags="-mcpu=$cpu"
3691         ;;
3692         cell)
3693             cpuflags="-mcpu=cell"
3694             enable ldbrx
3695         ;;
3696         e500mc)
3697             cpuflags="-mcpu=e500mc"
3698             disable altivec
3699         ;;
3700         e500v2)
3701             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3702             disable altivec
3703             disable dcbzl
3704         ;;
3705         e500)
3706             cpuflags="-mcpu=8540 -mhard-float"
3707             disable altivec
3708             disable dcbzl
3709         ;;
3710     esac
3711
3712 elif enabled sparc; then
3713
3714     case $cpu in
3715         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3716             cpuflags="-mcpu=$cpu"
3717         ;;
3718         ultrasparc*|niagara[234])
3719             cpuflags="-mcpu=$cpu"
3720         ;;
3721     esac
3722
3723 elif enabled x86; then
3724
3725     case $cpu in
3726         i[345]86|pentium)
3727             cpuflags="-march=$cpu"
3728             disable mmx
3729         ;;
3730         # targets that do NOT support nopl and conditional mov (cmov)
3731         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3732             cpuflags="-march=$cpu"
3733             disable i686
3734         ;;
3735         # targets that do support nopl and conditional mov (cmov)
3736         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3737         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3738             cpuflags="-march=$cpu"
3739             enable i686
3740             enable fast_cmov
3741         ;;
3742         # targets that do support conditional mov but on which it's slow
3743         pentium4|pentium4m|prescott|nocona)
3744             cpuflags="-march=$cpu"
3745             enable i686
3746             disable fast_cmov
3747         ;;
3748     esac
3749
3750 fi
3751
3752 if [ "$cpu" != generic ]; then
3753     add_cflags  $cpuflags
3754     add_asflags $cpuflags
3755 fi
3756
3757 # compiler sanity check
3758 check_exec <<EOF
3759 int main(void){ return 0; }
3760 EOF
3761 if test "$?" != 0; then
3762     echo "$cc is unable to create an executable file."
3763     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3764         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3765         echo "Only do this if you know what cross compiling means."
3766     fi
3767     die "C compiler test failed."
3768 fi
3769
3770 add_cppflags -D_ISOC99_SOURCE
3771 add_cxxflags -D__STDC_CONSTANT_MACROS
3772 check_cflags -std=c99
3773 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3774 #include <stdlib.h>
3775 EOF
3776 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3777 #include <stdlib.h>
3778 EOF
3779
3780 add_host_cppflags -D_ISOC99_SOURCE
3781 check_host_cflags -std=c99
3782 check_host_cflags -Wall
3783 check_host_cflags -O3
3784
3785 check_64bit(){
3786     arch32=$1
3787     arch64=$2
3788     expr=$3
3789     check_code cc "" "int test[2*($expr) - 1]" &&
3790         subarch=$arch64 || subarch=$arch32
3791 }
3792
3793 case "$arch" in
3794     aarch64|alpha|ia64)
3795         spic=$shared
3796     ;;
3797     mips)
3798         check_64bit mips mips64 '_MIPS_SIM > 1'
3799         spic=$shared
3800     ;;
3801     parisc)
3802         check_64bit parisc parisc64 'sizeof(void *) > 4'
3803         spic=$shared
3804     ;;
3805     ppc)
3806         check_64bit ppc ppc64 'sizeof(void *) > 4'
3807         spic=$shared
3808     ;;
3809     s390)
3810         check_64bit s390 s390x 'sizeof(void *) > 4'
3811         spic=$shared
3812     ;;
3813     sparc)
3814         check_64bit sparc sparc64 'sizeof(void *) > 4'
3815         spic=$shared
3816     ;;
3817     x86)
3818         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3819         if test "$subarch" = "x86_64"; then
3820             spic=$shared
3821         fi
3822     ;;
3823     ppc)
3824         check_cc <<EOF && subarch="ppc64"
3825         int test[(int)sizeof(char*) - 7];
3826 EOF
3827     ;;
3828 esac
3829
3830 enable $subarch
3831 enabled spic && enable_weak pic
3832
3833 # OS specific
3834 case $target_os in
3835     aix)
3836         SHFLAGS=-shared
3837         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3838         enabled shared && add_ldflags -Wl,-brtl
3839         ;;
3840     haiku)
3841         prefix_default="/boot/common"
3842         network_extralibs="-lnetwork"
3843         host_libs=
3844         ;;
3845     sunos)
3846         SHFLAGS='-shared -Wl,-h,$$(@F)'
3847         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3848         network_extralibs="-lsocket -lnsl"
3849         # When using suncc to build, the Solaris linker will mark
3850         # an executable with each instruction set encountered by
3851         # the Solaris assembler.  As our libraries contain their own
3852         # guards for processor-specific code, instead suppress
3853         # generation of the HWCAPS ELF section on Solaris x86 only.
3854         enabled_all suncc x86 &&
3855             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3856             add_ldflags -Wl,-M,mapfile
3857         nm_default='nm -P -g'
3858         ;;
3859     netbsd)
3860         disable symver
3861         oss_indev_extralibs="-lossaudio"
3862         oss_outdev_extralibs="-lossaudio"
3863         enabled gcc || check_ldflags -Wl,-zmuldefs
3864         ;;
3865     openbsd|bitrig)
3866         disable symver
3867         SHFLAGS='-shared'
3868         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3869         SLIB_INSTALL_LINKS=
3870         oss_indev_extralibs="-lossaudio"
3871         oss_outdev_extralibs="-lossaudio"
3872         ;;
3873     dragonfly)
3874         disable symver
3875         ;;
3876     freebsd)
3877         ;;
3878     bsd/os)
3879         add_extralibs -lpoll -lgnugetopt
3880         strip="strip -d"
3881         ;;
3882     darwin)
3883         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3884         enabled ppc && add_asflags -force_cpusubtype_ALL
3885         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3886         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3887         strip="${strip} -x"
3888         add_ldflags -Wl,-dynamic,-search_paths_first
3889         SLIBSUF=".dylib"
3890         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3891         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3892         objformat="macho"
3893         enabled x86_64 && objformat="macho64"
3894         enabled_any pic shared ||
3895             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3896         ;;
3897     mingw32*)
3898         if test $target_os = "mingw32ce"; then
3899             disable network
3900         else
3901             target_os=mingw32
3902         fi
3903         LIBTARGET=i386
3904         if enabled x86_64; then
3905             LIBTARGET="i386:x86-64"
3906         elif enabled arm; then
3907             LIBTARGET=arm-wince
3908         fi
3909         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3910         check_ldflags -Wl,--nxcompat
3911         check_ldflags -Wl,--dynamicbase
3912         shlibdir_default="$bindir_default"
3913         SLIBPREF=""
3914         SLIBSUF=".dll"
3915         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3916         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3917         dlltool="${cross_prefix}dlltool"
3918         if check_cmd lib.exe -list; then
3919             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3920             if enabled x86_64; then
3921                 LIBTARGET=x64
3922             fi
3923         elif check_cmd $dlltool --version; then
3924             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3925         fi
3926         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3927         SLIB_INSTALL_LINKS=
3928         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3929         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3930         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3931         objformat="win32"
3932         ranlib=:
3933         enable dos_paths
3934         ;;
3935     win32|win64)
3936         disable symver
3937         if enabled shared; then
3938             # Link to the import library instead of the normal static library
3939             # for shared libs.
3940             LD_LIB='%.lib'
3941             # Cannot build both shared and static libs with MSVC or icl.
3942             disable static
3943         fi
3944         shlibdir_default="$bindir_default"
3945         SLIBPREF=""
3946         SLIBSUF=".dll"
3947         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3948         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3949         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3950         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3951         SLIB_INSTALL_LINKS=
3952         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3953         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3954         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3955         objformat="win32"
3956         ranlib=:
3957         enable dos_paths
3958         ;;
3959     cygwin*)
3960         target_os=cygwin
3961         shlibdir_default="$bindir_default"
3962         SLIBPREF="cyg"
3963         SLIBSUF=".dll"
3964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3966         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3967         SLIB_INSTALL_LINKS=
3968         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3969         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3970         objformat="win32"
3971         enable dos_paths
3972         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3973         ;;
3974     *-dos|freedos|opendos)
3975         network_extralibs="-lsocket"
3976         objformat="coff"
3977         enable dos_paths
3978         add_cppflags -U__STRICT_ANSI__
3979         ;;
3980     linux)
3981         enable dv1394
3982         ;;
3983     irix*)
3984         target_os=irix
3985         ranlib="echo ignoring ranlib"
3986         ;;
3987     os/2*)
3988         strip="lxlite -CS"
3989         ln_s="cp -f"
3990         objformat="aout"
3991         add_cppflags -D_GNU_SOURCE
3992         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3993         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3994         LIBSUF="_s.a"
3995         SLIBPREF=""
3996         SLIBSUF=".dll"
3997         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3998         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3999         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4000             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4001             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4002             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4003             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4004             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4005         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4006             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4007         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4008         enable dos_paths
4009         enable_weak os2threads
4010         ;;
4011     gnu/kfreebsd)
4012         add_cppflags -D_BSD_SOURCE
4013         ;;
4014     gnu)
4015         ;;
4016     qnx)
4017         add_cppflags -D_QNX_SOURCE
4018         network_extralibs="-lsocket"
4019         ;;
4020     symbian)
4021         SLIBSUF=".dll"
4022         enable dos_paths
4023         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4024         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4025         add_ldflags -Wl,--target1-abs,--no-undefined \
4026                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4027                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4028         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4029                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4030                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4031         ;;
4032     osf1)
4033         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4034         ;;
4035     minix)
4036         ;;
4037     plan9)
4038         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4039                      -D_REENTRANT_SOURCE        \
4040                      -D_RESEARCH_SOURCE         \
4041                      -DFD_SETSIZE=96            \
4042                      -DHAVE_SOCK_OPTS
4043         add_compat strtod.o strtod=avpriv_strtod
4044         network_extralibs='-lbsd'
4045         exeobjs=compat/plan9/main.o
4046         disable ffserver
4047         cp_f='cp'
4048         ;;
4049     none)
4050         ;;
4051     *)
4052         die "Unknown OS '$target_os'."
4053         ;;
4054 esac
4055
4056 # determine libc flavour
4057
4058 probe_libc(){
4059     pfx=$1
4060     pfx_no_=${pfx%_}
4061     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4062     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4063         eval ${pfx}libc_type=uclibc
4064         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4065     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4066         eval ${pfx}libc_type=glibc
4067         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4068     # MinGW headers can be installed on Cygwin, so check for newlib first.
4069     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4070         eval ${pfx}libc_type=newlib
4071         add_${pfx}cppflags -U__STRICT_ANSI__
4072     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4073     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4074         eval ${pfx}libc_type=mingw64
4075         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4076             add_compat msvcrt/snprintf.o
4077             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4078         fi
4079         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4080         eval test \$${pfx_no_}cc_type = "gcc" &&
4081             add_${pfx}cppflags -D__printf__=__gnu_printf__
4082     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4083          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4084         eval ${pfx}libc_type=mingw32
4085         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4086             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4087             die "ERROR: MinGW32 runtime version must be >= 3.15."
4088         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4089         eval test \$${pfx_no_}cc_type = "gcc" &&
4090             add_${pfx}cppflags -D__printf__=__gnu_printf__
4091     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4092         eval ${pfx}libc_type=msvcrt
4093         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4094         # 0x601 by default unless something else is set by the user.
4095         # This can easily lead to us detecting functions only present
4096         # in such new versions and producing binaries requiring windows 7.0.
4097         # Therefore explicitly set the default to XP unless the user has
4098         # set something else on the command line.
4099         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4100             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4101     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4102         eval ${pfx}libc_type=klibc
4103     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4104         eval ${pfx}libc_type=bionic
4105     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4106         eval ${pfx}libc_type=solaris
4107         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4108     fi
4109 }
4110
4111 probe_libc
4112 test -n "$libc_type" && enable libc_$libc_type
4113 probe_libc host_
4114 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4115
4116 case $libc_type in
4117     bionic)
4118         add_compat strtod.o strtod=avpriv_strtod
4119         ;;
4120     msvcrt)
4121         add_compat strtod.o strtod=avpriv_strtod
4122         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4123                                      _snprintf=avpriv_snprintf  \
4124                                      vsnprintf=avpriv_vsnprintf
4125         ;;
4126 esac
4127
4128 # hacks for compiler/libc/os combinations
4129
4130 if enabled_all tms470 libc_glibc; then
4131     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4132     add_cppflags -D__USER_LABEL_PREFIX__=
4133     add_cppflags -D__builtin_memset=memset
4134     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4135     add_cflags   -pds=48    # incompatible redefinition of macro
4136 fi
4137
4138 if enabled_all ccc libc_glibc; then
4139     add_ldflags -Wl,-z,now  # calls to libots crash without this
4140 fi
4141
4142 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4143     add_cppflags '-I\$(SRC_PATH)/compat/float'
4144
4145 esc(){
4146     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4147 }
4148
4149 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4150
4151 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4152
4153 set_default $PATHS_LIST
4154 set_default nm
4155
4156 # we need to build at least one lib type
4157 if ! enabled_any static shared; then
4158     cat <<EOF
4159 At least one library type must be built.
4160 Specify --enable-static to build the static libraries or --enable-shared to
4161 build the shared libraries as well. To only build the shared libraries specify
4162 --disable-static in addition to --enable-shared.
4163 EOF
4164     exit 1;
4165 fi
4166
4167 die_license_disabled() {
4168     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4169 }
4170
4171 die_license_disabled_gpl() {
4172     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4173 }
4174
4175 die_license_disabled gpl frei0r
4176 die_license_disabled gpl libcdio
4177 die_license_disabled gpl libutvideo
4178 die_license_disabled gpl libvidstab
4179 die_license_disabled gpl libx264
4180 die_license_disabled gpl libx265
4181 die_license_disabled gpl libxavs
4182 die_license_disabled gpl libxvid
4183 die_license_disabled gpl libzvbi
4184 die_license_disabled gpl x11grab
4185
4186 die_license_disabled nonfree libaacplus
4187 die_license_disabled nonfree libfaac
4188 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4189 enabled gpl && die_license_disabled_gpl nonfree openssl
4190
4191 die_license_disabled version3 libopencore_amrnb
4192 die_license_disabled version3 libopencore_amrwb
4193 die_license_disabled version3 libvo_aacenc
4194 die_license_disabled version3 libvo_amrwbenc
4195
4196 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4197
4198 disabled optimizations || check_cflags -fomit-frame-pointer
4199
4200 enable_weak_pic() {
4201     disabled pic && return
4202     enable pic
4203     add_cppflags -DPIC
4204     case "$target_os" in
4205     mingw*|cygwin*)
4206         ;;
4207     *)
4208         add_cflags -fPIC
4209         ;;
4210     esac
4211     add_asflags  -fPIC
4212 }
4213
4214 enabled pic && enable_weak_pic
4215
4216 check_cc <<EOF || die "Symbol mangling check failed."
4217 int ff_extern;
4218 EOF
4219 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4220 extern_prefix=${sym%%ff_extern*}
4221
4222 check_cc <<EOF && enable_weak inline_asm
4223 void foo(void) { __asm__ volatile ("" ::); }
4224 EOF
4225
4226 _restrict=
4227 for restrict_keyword in restrict __restrict__ __restrict; do
4228     check_cc <<EOF && _restrict=$restrict_keyword && break
4229 void foo(char * $restrict_keyword p);
4230 EOF
4231 done
4232
4233 check_cc <<EOF && enable pragma_deprecated
4234 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4235 EOF
4236
4237 check_cc <<EOF && enable attribute_packed
4238 struct { int x; } __attribute__((packed)) x;
4239 EOF
4240
4241 check_cc <<EOF && enable attribute_may_alias
4242 union { int x; } __attribute__((may_alias)) x;
4243 EOF
4244
4245 check_cc <<EOF || die "endian test failed"
4246 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4247 EOF
4248 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4249
4250 check_inline_asm inline_asm_labels '"1:\n"'
4251
4252 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4253
4254 if enabled aarch64; then
4255     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4256     # internal assembler in clang 3.3 does not support this instruction
4257     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4258     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4259
4260     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4261
4262 elif enabled alpha; then
4263
4264     check_cflags -mieee
4265
4266 elif enabled arm; then
4267
4268     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4269 float func(float a, float b){ return a+b; }
4270 EOF
4271
4272     enabled thumb && check_cflags -mthumb || check_cflags -marm
4273     nogas=die
4274
4275     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4276         enable vfp_args
4277     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4278         case "${cross_prefix:-$cc}" in
4279             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4280             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4281 __asm__ (".eabi_attribute 28, 1");
4282 int main(void) { return 0; }
4283 EOF
4284         esac
4285         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4286     fi
4287
4288     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4289     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4290     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4291     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4292     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4293     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4294
4295     [ $target_os = linux ] ||
4296         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4297             $ARCH_EXT_LIST_ARM
4298
4299     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4300
4301     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4302
4303 elif enabled mips; then
4304
4305     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4306     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4307      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4308     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4309      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4310     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4311      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4312     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4313      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4314
4315 elif enabled parisc; then
4316
4317     if enabled gcc; then
4318         case $($cc -dumpversion) in
4319             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4320         esac
4321     fi
4322
4323 elif enabled ppc; then
4324
4325     enable local_aligned_8 local_aligned_16 local_aligned_32
4326
4327     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4328     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4329     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4330     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4331
4332     # AltiVec flags: The FSF version of GCC differs from the Apple version
4333     if enabled altivec; then
4334         if ! enabled_any pic ppc64; then
4335             nogas=warn
4336         fi
4337         check_cflags -maltivec -mabi=altivec &&
4338         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4339         check_cflags -faltivec
4340
4341         # check if our compiler supports Motorola AltiVec C API
4342         check_cc <<EOF || disable altivec
4343 $inc_altivec_h
4344 int main(void) {
4345     vector signed int v1 = (vector signed int) { 0 };
4346     vector signed int v2 = (vector signed int) { 1 };
4347     v1 = vec_add(v1, v2);
4348     return 0;
4349 }
4350 EOF
4351
4352         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4353     fi
4354
4355 elif enabled x86; then
4356
4357     check_builtin rdtsc    intrin.h   "__rdtsc()"
4358     check_builtin mm_empty mmintrin.h "_mm_empty()"
4359
4360     enable local_aligned_8 local_aligned_16 local_aligned_32
4361
4362     # check whether EBP is available on x86
4363     # As 'i' is stored on the stack, this program will crash
4364     # if the base pointer is used to access it because the
4365     # base pointer is cleared in the inline assembly code.
4366     check_exec_crash <<EOF && enable ebp_available
4367 volatile int i=0;
4368 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4369 return i;
4370 EOF
4371
4372     # check whether EBX is available on x86
4373     check_inline_asm ebx_available '""::"b"(0)' &&
4374         check_inline_asm ebx_available '"":::"%ebx"'
4375
4376     # check whether xmm clobbers are supported
4377     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4378
4379     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4380         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4381
4382     # check whether binutils is new enough to compile SSSE3/MMXEXT
4383     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4384     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4385
4386     if ! disabled_any asm mmx yasm; then
4387         if check_cmd $yasmexe --version; then
4388             enabled x86_64 && yasm_extra="-m amd64"
4389             yasm_debug="-g dwarf2"
4390         elif check_cmd nasm -v; then
4391             yasmexe=nasm
4392             yasm_debug="-g -F dwarf"
4393             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4394         fi
4395
4396         YASMFLAGS="-f $objformat $yasm_extra"
4397         enabled pic               && append YASMFLAGS "-DPIC"
4398         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4399         case "$objformat" in
4400             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4401         esac
4402
4403         check_yasm "movbe ecx, [5]" && enable yasm ||
4404             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4405         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4406         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4407         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4408         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4409         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4410         check_yasm "CPU amdnop" || disable cpunop
4411     fi
4412
4413     case "$cpu" in
4414         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4415             disable fast_clz
4416         ;;
4417     esac
4418
4419 fi
4420
4421 if enabled asm; then
4422     as=${gas:=$as}
4423     check_as <<EOF && enable gnu_as || \
4424         $nogas "GNU assembler not found, install gas-preprocessor"
4425 .macro m n
4426 \n: .int 0
4427 .endm
4428 m x
4429 EOF
4430 fi
4431
4432 check_ldflags -Wl,--as-needed
4433
4434 if check_func dlopen; then
4435     ldl=
4436 elif check_func dlopen -ldl; then
4437     ldl=-ldl
4438 fi
4439
4440 if ! disabled network; then
4441     check_func getaddrinfo $network_extralibs
4442     check_func getservbyport $network_extralibs
4443     check_func inet_aton $network_extralibs
4444
4445     check_type netdb.h "struct addrinfo"
4446     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4447     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4448     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4449     check_type poll.h "struct pollfd"
4450     check_type netinet/sctp.h "struct sctp_event_subscribe"
4451     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4452     check_type netinet/in.h "struct sockaddr_in6"
4453     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4454     check_type "sys/types.h sys/socket.h" socklen_t
4455
4456     # Prefer arpa/inet.h over winsock2
4457     if check_header arpa/inet.h ; then
4458         check_func closesocket
4459     elif check_header winsock2.h ; then
4460         check_func_headers winsock2.h closesocket -lws2 &&
4461             network_extralibs="-lws2" ||
4462         { check_func_headers winsock2.h closesocket -lws2_32 &&
4463             network_extralibs="-lws2_32"; } || disable winsock2_h network
4464         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4465
4466         check_type ws2tcpip.h socklen_t
4467         check_type ws2tcpip.h "struct addrinfo"
4468         check_type ws2tcpip.h "struct group_source_req"
4469         check_type ws2tcpip.h "struct ip_mreq_source"
4470         check_type ws2tcpip.h "struct ipv6_mreq"
4471         check_type winsock2.h "struct pollfd"
4472         check_struct winsock2.h "struct sockaddr" sa_len
4473         check_type ws2tcpip.h "struct sockaddr_in6"
4474         check_type ws2tcpip.h "struct sockaddr_storage"
4475     else
4476         disable network
4477     fi
4478 fi
4479
4480 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4481 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4482 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4483 check_builtin sarestart signal.h "SA_RESTART"
4484 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4485
4486 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4487 check_func  ${malloc_prefix}memalign            && enable memalign
4488 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4489
4490 check_func  access
4491 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4492 check_func  fcntl
4493 check_func  fork
4494 check_func  gethrtime
4495 check_func  getopt
4496 check_func  getrusage
4497 check_func  gettimeofday
4498 check_func  isatty
4499 check_func  localtime_r
4500 check_func  mach_absolute_time
4501 check_func  mkstemp
4502 check_func  mmap
4503 check_func  mprotect
4504 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4505 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4506 check_func  sched_getaffinity
4507 check_func  setrlimit
4508 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4509 check_func  strerror_r
4510 check_func  sysconf
4511 check_func  sysctl
4512 check_func  usleep
4513
4514 check_func_headers conio.h kbhit
4515 check_func_headers io.h setmode
4516 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4517 check_func_headers stdlib.h getenv
4518
4519 check_func_headers windows.h CoTaskMemFree -lole32
4520 check_func_headers windows.h GetProcessAffinityMask
4521 check_func_headers windows.h GetProcessTimes
4522 check_func_headers windows.h GetSystemTimeAsFileTime
4523 check_func_headers windows.h MapViewOfFile
4524 check_func_headers windows.h PeekNamedPipe
4525 check_func_headers windows.h SetConsoleTextAttribute
4526 check_func_headers windows.h Sleep
4527 check_func_headers windows.h VirtualAlloc
4528 check_func_headers glob.h glob
4529 enabled xlib &&
4530     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4531
4532 check_header cl/cl.h
4533 check_header direct.h
4534 check_header dlfcn.h
4535 check_header dxva.h
4536 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4537 check_header io.h
4538 check_header libcrystalhd/libcrystalhd_if.h
4539 check_header mach/mach_time.h
4540 check_header malloc.h
4541 check_header poll.h
4542 check_header sys/mman.h
4543 check_header sys/param.h
4544 check_header sys/resource.h
4545 check_header sys/select.h
4546 check_header sys/time.h
4547 check_header sys/un.h
4548 check_header termios.h
4549 check_header unistd.h
4550 check_header vdpau/vdpau.h
4551 check_header vdpau/vdpau_x11.h
4552 check_header VideoDecodeAcceleration/VDADecoder.h
4553 check_header windows.h
4554 check_header X11/extensions/XvMClib.h
4555 check_header asm/types.h
4556
4557 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4558 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4559 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4560
4561 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4562
4563 if ! disabled w32threads && ! enabled pthreads; then
4564     check_func_headers "windows.h process.h" _beginthreadex &&
4565         enable w32threads || disable w32threads
4566 fi
4567
4568 # check for some common methods of building with pthread support
4569 # do this before the optional library checks as some of them require pthreads
4570 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4571     enable pthreads
4572     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4573         add_cflags -pthread
4574         add_extralibs -pthread
4575     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4576         add_cflags -pthreads
4577         add_extralibs -pthreads
4578     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4579         add_extralibs -lpthreadGC2
4580     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4581         :
4582     elif ! check_func pthread_join && ! check_func pthread_create; then
4583         disable pthreads
4584     fi
4585     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4586 fi
4587
4588
4589 if enabled pthreads; then
4590   check_func pthread_cancel
4591 fi
4592
4593 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4594 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4595
4596 check_lib math.h sin -lm && LIBM="-lm"
4597 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4598
4599 atan2f_args=2
4600 ldexpf_args=2
4601 powf_args=2
4602
4603 for func in $MATH_FUNCS; do
4604     eval check_mathfunc $func \${${func}_args:-1}
4605 done
4606
4607 # these are off by default, so fail if requested and not available
4608 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4609 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4610                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4611                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4612 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4613 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4614 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4615 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4616 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4617 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4618 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4619 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4620 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4621 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4622                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4623                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4624 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4625 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4626 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4627 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"
4628 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4629 enabled fontconfig        && enable libfontconfig
4630 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4631 enabled libfreetype       && require_libfreetype
4632 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4633 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4634                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4635                                done || die "ERROR: libgsm not found"; }
4636 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4637 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4638 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4639 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4640 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4641 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4642 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4643 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4644                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4645                                die "ERROR: libopenjpeg not found"; }
4646 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4647 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4648 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4649 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4650 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4651 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4652 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4653 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4654 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4655 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4656     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4657     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4658 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4659 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4660                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4661                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4662 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4663 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4664 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4665 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4666 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4667 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4668 enabled libvpx            && {
4669     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4670                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4671     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 ||
4672                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4673     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4674     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; } }
4675 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4676 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4677 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4678                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4679                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4680 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4681                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4682                                die "ERROR: libx265 version must be >= 13."; }
4683 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4684 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4685 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4686 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4687 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4688                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4689                                die "ERROR: openal not found"; } &&
4690                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4691                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4692 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4693                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4694                                die "ERROR: opencl not found"; } &&
4695                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4696                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4697                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4698 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4699                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4700                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4701                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4702                                die "ERROR: opengl not found."
4703                              }
4704 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4705                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4706                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4707                                die "ERROR: openssl not found"; }
4708 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4709
4710 if enabled gnutls; then
4711     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4712     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4713 fi
4714
4715 # libdc1394 check
4716 if enabled libdc1394; then
4717     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4718         enable libdc1394_2; } ||
4719     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4720         enable libdc1394_1; } ||
4721     die "ERROR: No version of libdc1394 found "
4722 fi
4723
4724 SDL_CONFIG="${cross_prefix}sdl-config"
4725 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4726     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4727     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4728     enable sdl
4729 else
4730   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4731     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4732     sdl_libs=$("${SDL_CONFIG}" --libs)
4733     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4734     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4735     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4736     enable sdl
4737   fi
4738 fi
4739 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4740
4741 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4742 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4743 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4744 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4745 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4746
4747 check_header linux/fb.h
4748 check_header linux/videodev.h
4749 check_header linux/videodev2.h
4750 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4751
4752 check_header sys/videoio.h
4753
4754 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4755 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4756 # w32api 3.12 had it defined wrong
4757 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4758
4759 check_type "dshow.h" IBaseFilter
4760
4761 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4762 { check_header dev/bktr/ioctl_meteor.h &&
4763   check_header dev/bktr/ioctl_bt848.h; } ||
4764 { check_header machine/ioctl_meteor.h &&
4765   check_header machine/ioctl_bt848.h; } ||
4766 { check_header dev/v