Merge commit '7e244c68600f479270e979258e389ed5240885fb'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110
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   --enable-vda             enable VDA code
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-libcaca         enable textual display using libcaca
203   --enable-libcelt         enable CELT decoding via libcelt [no]
204   --enable-libcdio         enable audio CD grabbing with libcdio
205   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
206                            and libraw1394 [no]
207   --enable-libfaac         enable AAC encoding via libfaac [no]
208   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
209   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
210   --enable-libfreetype     enable libfreetype [no]
211   --enable-libgme          enable Game Music Emu via libgme [no]
212   --enable-libgsm          enable GSM de/encoding via libgsm [no]
213   --enable-libiec61883     enable iec61883 via libiec61883 [no]
214   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
215   --enable-libmodplug      enable ModPlug via libmodplug [no]
216   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
217   --enable-libnut          enable NUT (de)muxing via libnut,
218                            native (de)muxer exists [no]
219   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
220   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
221   --enable-libopencv       enable video filtering via libopencv [no]
222   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
223   --enable-libopus         enable Opus decoding via libopus [no]
224   --enable-libpulse        enable Pulseaudio input via libpulse [no]
225   --enable-libquvi         enable quvi input via libquvi [no]
226   --enable-librtmp         enable RTMP[E] support via librtmp [no]
227   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
228   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
229   --enable-libsoxr         enable Include libsoxr resampling [no]
230   --enable-libspeex        enable Speex de/encoding via libspeex [no]
231   --enable-libssh          enable SFTP protocol via libssh [no]
232   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
233   --enable-libtheora       enable Theora encoding via libtheora [no]
234   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
235   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
236   --enable-libv4l2         enable libv4l2/v4l-utils [no]
237   --enable-libvidstab      enable video stabilization using vid.stab [no]
238   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
239   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
240   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
241                            native implementation exists [no]
242   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
243   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
244   --enable-libx264         enable H.264 encoding via x264 [no]
245   --enable-libxavs         enable AVS encoding via xavs [no]
246   --enable-libxvid         enable Xvid encoding via xvidcore,
247                            native MPEG-4/Xvid encoder exists [no]
248   --enable-libzmq          enable message passing via libzmq [no]
249   --enable-libzvbi         enable teletext support via libzvbi [no]
250   --enable-openal          enable OpenAL 1.1 capture support [no]
251   --enable-opencl          enable OpenCL code
252   --enable-openssl         enable openssl [no]
253   --enable-x11grab         enable X11 grabbing [no]
254   --disable-zlib           disable zlib [autodetect]
255
256 Advanced options (experts only):
257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
258   --enable-cross-compile   assume a cross-compiler is used
259   --sysroot=PATH           root of cross-build tree
260   --sysinclude=PATH        location of cross-build system headers
261   --target-os=OS           compiler targets OS [$target_os]
262   --target-exec=CMD        command to run executables on target
263   --target-path=DIR        path to view of build directory on target
264   --target-samples=DIR     path to samples directory on target
265   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
266   --toolchain=NAME         set tool defaults according to NAME
267   --nm=NM                  use nm tool NM [$nm_default]
268   --ar=AR                  use archive tool AR [$ar_default]
269   --as=AS                  use assembler AS [$as_default]
270   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
271   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
272   --cc=CC                  use C compiler CC [$cc_default]
273   --cxx=CXX                use C compiler CXX [$cxx_default]
274   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
275   --ld=LD                  use linker LD [$ld_default]
276   --host-cc=HOSTCC         use host C compiler HOSTCC
277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
279   --host-ld=HOSTLD         use host linker HOSTLD
280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
281   --host-libs=HLIBS        use libs HLIBS when linking for host
282   --host-os=OS             compiler host OS [$target_os]
283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
284   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --build-suffix=SUFFIX    library name suffix []
290   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
291   --progs-suffix=SUFFIX    program name suffix []
292   --arch=ARCH              select architecture [$arch]
293   --cpu=CPU                select the minimum required CPU (affects
294                            instruction selection, may crash on older CPUs)
295   --enable-pic             build position-independent code
296   --enable-sram            allow use of on-chip SRAM
297   --enable-thumb           compile for Thumb instruction set
298   --disable-symver         disable symbol versioning
299   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
300   --disable-safe-bitstream-reader
301                            disable buffer boundary checking in bitreaders
302                            (faster, but may crash)
303   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
304   --enable-lto             use link-time optimization
305
306 Optimization options (experts only):
307   --disable-asm            disable all assembler optimizations
308   --disable-altivec        disable AltiVec optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-vis            disable VIS optimizations
328   --disable-inline-asm     disable use of inline assembler
329   --disable-yasm           disable use of yasm assembler
330   --disable-mips32r2       disable MIPS32R2 optimizations
331   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
332   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
333   --disable-mipsfpu        disable floating point MIPS optimizations
334   --disable-fast-unaligned consider unaligned accesses slow
335
336 Developer options (useful when working on FFmpeg itself):
337   --disable-debug          disable debugging symbols
338   --enable-debug=LEVEL     set the debug level [$debuglevel]
339   --disable-optimizations  disable compiler optimizations
340   --enable-extra-warnings  enable more compiler warnings
341   --disable-stripping      disable stripping of executables and shared libraries
342   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
343                            2 causes a slowdown at runtime.
344   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
345   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
346                            leaks and errors, using the specified valgrind binary.
347                            Cannot be combined with --target-exec
348   --enable-ftrapv          Trap arithmetic overflows
349   --samples=PATH           location of test samples for FATE, if not set use
350                            \$FATE_SAMPLES at make invocation time.
351   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
352                            should be used only for debugging purposes)
353   --enable-random          randomly enable/disable components
354   --disable-random
355   --enable-random=LIST     randomly enable/disable specific components or
356   --disable-random=LIST    component groups. LIST is a comma-separated list
357                            of NAME[:PROB] entries where NAME is a component
358                            (group) and PROB the probability associated with
359                            NAME (default 0.5).
360   --random-seed=VALUE      seed value for --enable/disable-random
361
362 NOTE: Object files are built at the place where configure is launched.
363 EOF
364   exit 0
365 }
366
367 quotes='""'
368
369 log(){
370     echo "$@" >> $logfile
371 }
372
373 log_file(){
374     log BEGIN $1
375     pr -n -t $1 >> $logfile
376     log END $1
377 }
378
379 echolog(){
380     log "$@"
381     echo "$@"
382 }
383
384 warn(){
385     log "WARNING: $*"
386     WARNINGS="${WARNINGS}WARNING: $*\n"
387 }
388
389 die(){
390     echolog "$@"
391     cat <<EOF
392
393 If you think configure made a mistake, make sure you are using the latest
394 version from Git.  If the latest version fails, report the problem to the
395 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
396 EOF
397     if disabled logging; then
398         cat <<EOF
399 Rerun configure with logging enabled (do not use --disable-logging), and
400 include the log this produces with your report.
401 EOF
402     else
403         cat <<EOF
404 Include the log file "$logfile" produced by configure as this will help
405 solving the problem.
406 EOF
407     fi
408     exit 1
409 }
410
411 # Avoid locale weirdness, besides we really just want to translate ASCII.
412 toupper(){
413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
414 }
415
416 tolower(){
417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
418 }
419
420 c_escape(){
421     echo "$*" | sed 's/["\\]/\\\0/g'
422 }
423
424 sh_quote(){
425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
427     echo "$v"
428 }
429
430 cleanws(){
431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
432 }
433
434 filter(){
435     pat=$1
436     shift
437     for v; do
438         eval "case $v in $pat) echo $v ;; esac"
439     done
440 }
441
442 filter_out(){
443     pat=$1
444     shift
445     for v; do
446         eval "case $v in $pat) ;; *) echo $v ;; esac"
447     done
448 }
449
450 map(){
451     m=$1
452     shift
453     for v; do eval $m; done
454 }
455
456 add_suffix(){
457     suffix=$1
458     shift
459     for v; do echo ${v}${suffix}; done
460 }
461
462 set_all(){
463     value=$1
464     shift
465     for var in $*; do
466         eval $var=$value
467     done
468 }
469
470 set_weak(){
471     value=$1
472     shift
473     for var; do
474         eval : \${$var:=$value}
475     done
476 }
477
478 sanitize_var_name(){
479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
480 }
481
482 set_safe(){
483     var=$1
484     shift
485     eval $(sanitize_var_name "$var")='$*'
486 }
487
488 get_safe(){
489     eval echo \$$(sanitize_var_name "$1")
490 }
491
492 pushvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:=0}
495         eval ${pvar}_${level}="\$$pvar"
496         eval ${pvar}_level=$(($level+1))
497     done
498 }
499
500 popvar(){
501     for pvar in $*; do
502         eval level=\${${pvar}_level:-0}
503         test $level = 0 && continue
504         eval level=$(($level-1))
505         eval $pvar="\${${pvar}_${level}}"
506         eval ${pvar}_level=$level
507         eval unset ${pvar}_${level}
508     done
509 }
510
511 enable(){
512     set_all yes $*
513 }
514
515 disable(){
516     set_all no $*
517 }
518
519 enable_weak(){
520     set_weak yes $*
521 }
522
523 disable_weak(){
524     set_weak no $*
525 }
526
527 enable_safe(){
528     for var; do
529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 disable_safe(){
534     for var; do
535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
536     done
537 }
538
539 do_enable_deep(){
540     for var; do
541         enabled $var && continue
542         eval sel="\$${var}_select"
543         eval sgs="\$${var}_suggest"
544         pushvar var sgs
545         enable_deep $sel
546         popvar sgs
547         enable_deep_weak $sgs
548         popvar var
549     done
550 }
551
552 enable_deep(){
553     do_enable_deep $*
554     enable $*
555 }
556
557 enable_deep_weak(){
558     for var; do
559         disabled $var && continue
560         pushvar var
561         do_enable_deep $var
562         popvar var
563         enable_weak $var
564     done
565 }
566
567 enabled(){
568     test "${1#!}" = "$1" && op== || op=!=
569     eval test "x\$${1#!}" $op "xyes"
570 }
571
572 disabled(){
573     test "${1#!}" = "$1" && op== || op=!=
574     eval test "x\$${1#!}" $op "xno"
575 }
576
577 enabled_all(){
578     for opt; do
579         enabled $opt || return 1
580     done
581 }
582
583 disabled_all(){
584     for opt; do
585         disabled $opt || return 1
586     done
587 }
588
589 enabled_any(){
590     for opt; do
591         enabled $opt && return 0
592     done
593 }
594
595 disabled_any(){
596     for opt; do
597         disabled $opt && return 0
598     done
599     return 1
600 }
601
602 set_default(){
603     for opt; do
604         eval : \${$opt:=\$${opt}_default}
605     done
606 }
607
608 is_in(){
609     value=$1
610     shift
611     for var in $*; do
612         [ $var = $value ] && return 0
613     done
614     return 1
615 }
616
617 do_check_deps(){
618     for cfg; do
619         cfg="${cfg#!}"
620         enabled ${cfg}_checking && die "Circular dependency for $cfg."
621         disabled ${cfg}_checking && continue
622         enable ${cfg}_checking
623         append allopts $cfg
624
625         eval dep_all="\$${cfg}_deps"
626         eval dep_any="\$${cfg}_deps_any"
627         eval dep_sel="\$${cfg}_select"
628         eval dep_sgs="\$${cfg}_suggest"
629         eval dep_ifa="\$${cfg}_if"
630         eval dep_ifn="\$${cfg}_if_any"
631
632         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
633         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
634         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
635
636         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
637         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
638         enabled_all  $dep_all || disable $cfg
639         enabled_any  $dep_any || disable $cfg
640         disabled_any $dep_sel && disable $cfg
641
642         if enabled $cfg; then
643             enable_deep $dep_sel
644             enable_deep_weak $dep_sgs
645         fi
646
647         disable ${cfg}_checking
648     done
649 }
650
651 check_deps(){
652     unset allopts
653
654     do_check_deps "$@"
655
656     for cfg in $allopts; do
657         enabled $cfg || continue
658         eval dep_extralibs="\$${cfg}_extralibs"
659         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
660     done
661 }
662
663 print_config(){
664     pfx=$1
665     files=$2
666     shift 2
667     map 'eval echo "$v \${$v:-no}"' "$@" |
668     awk "BEGIN { split(\"$files\", files) }
669         {
670             c = \"$pfx\" toupper(\$1);
671             v = \$2;
672             sub(/yes/, 1, v);
673             sub(/no/,  0, v);
674             for (f in files) {
675                 file = files[f];
676                 if (file ~ /\\.h\$/) {
677                     printf(\"#define %s %d\\n\", c, v) >>file;
678                 } else if (file ~ /\\.asm\$/) {
679                     printf(\"%%define %s %d\\n\", c, v) >>file;
680                 } else if (file ~ /\\.mak\$/) {
681                     n = -v ? \"\" : \"!\";
682                     printf(\"%s%s=yes\\n\", n, c) >>file;
683                 } else if (file ~ /\\.texi\$/) {
684                     pre = -v ? \"\" : \"@c \";
685                     yesno = \$2;
686                     c2 = tolower(c);
687                     gsub(/_/, \"-\", c2);
688                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
689                 }
690             }
691         }"
692 }
693
694 print_enabled(){
695     suf=$1
696     shift
697     for v; do
698         enabled $v && printf "%s\n" ${v%$suf};
699     done
700 }
701
702 append(){
703     var=$1
704     shift
705     eval "$var=\"\$$var $*\""
706 }
707
708 prepend(){
709     var=$1
710     shift
711     eval "$var=\"$* \$$var\""
712 }
713
714 add_cppflags(){
715     append CPPFLAGS "$@"
716 }
717
718 add_cflags(){
719     append CFLAGS $($cflags_filter "$@")
720 }
721
722 add_cxxflags(){
723     append CXXFLAGS $($cflags_filter "$@")
724 }
725
726 add_asflags(){
727     append ASFLAGS $($asflags_filter "$@")
728 }
729
730 add_ldflags(){
731     append LDFLAGS $($ldflags_filter "$@")
732 }
733
734 add_stripflags(){
735     append ASMSTRIPFLAGS "$@"
736 }
737
738 add_extralibs(){
739     prepend extralibs $($ldflags_filter "$@")
740 }
741
742 add_host_cppflags(){
743     append host_cppflags "$@"
744 }
745
746 add_host_cflags(){
747     append host_cflags $($host_cflags_filter "$@")
748 }
749
750 add_host_ldflags(){
751     append host_ldflags $($host_ldflags_filter "$@")
752 }
753
754 add_compat(){
755     append compat_objs $1
756     shift
757     map 'add_cppflags -D$v' "$@"
758 }
759
760 check_cmd(){
761     log "$@"
762     "$@" >> $logfile 2>&1
763 }
764
765 cc_o(){
766     eval printf '%s\\n' $CC_O
767 }
768
769 cc_e(){
770     eval printf '%s\\n' $CC_E
771 }
772
773 check_cc(){
774     log check_cc "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
778 }
779
780 check_cxx(){
781     log check_cxx "$@"
782     cat > $TMPCPP
783     log_file $TMPCPP
784     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
785 }
786
787 check_cpp(){
788     log check_cpp "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
792 }
793
794 as_o(){
795     eval printf '%s\\n' $AS_O
796 }
797
798 check_as(){
799     log check_as "$@"
800     cat > $TMPS
801     log_file $TMPS
802     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
803 }
804
805 check_inline_asm(){
806     log check_inline_asm "$@"
807     name="$1"
808     code="$2"
809     shift 2
810     disable $name
811     check_cc "$@" <<EOF && enable $name
812 void foo(void){ __asm__ volatile($code); }
813 EOF
814 }
815
816 check_insn(){
817     log check_insn "$@"
818     check_inline_asm ${1}_inline "\"$2\""
819     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
820 }
821
822 check_yasm(){
823     log check_yasm "$@"
824     echo "$1" > $TMPS
825     log_file $TMPS
826     shift 1
827     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
828 }
829
830 ld_o(){
831     eval printf '%s\\n' $LD_O
832 }
833
834 check_ld(){
835     log check_ld "$@"
836     type=$1
837     shift 1
838     flags=$(filter_out '-l*|*.so' $@)
839     libs=$(filter '-l*|*.so' $@)
840     check_$type $($cflags_filter $flags) || return
841     flags=$($ldflags_filter $flags)
842     libs=$($ldflags_filter $libs)
843     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
844 }
845
846 check_code(){
847     log check_code "$@"
848     check=$1
849     headers=$2
850     code=$3
851     shift 3
852     {
853         for hdr in $headers; do
854             echo "#include <$hdr>"
855         done
856         echo "int main(void) { $code; return 0; }"
857     } | check_$check "$@"
858 }
859
860 check_cppflags(){
861     log check_cppflags "$@"
862     check_cc "$@" <<EOF && append CPPFLAGS "$@"
863 int x;
864 EOF
865 }
866
867 test_cflags(){
868     log test_cflags "$@"
869     set -- $($cflags_filter "$@")
870     check_cc "$@" <<EOF
871 int x;
872 EOF
873 }
874
875 check_cflags(){
876     log check_cflags "$@"
877     test_cflags "$@" && add_cflags "$@"
878 }
879
880 check_cxxflags(){
881     log check_cxxflags "$@"
882     set -- $($cflags_filter "$@")
883     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
884 int x;
885 EOF
886 }
887
888 test_ldflags(){
889     log test_ldflags "$@"
890     check_ld "cc" "$@" <<EOF
891 int main(void){ return 0; }
892 EOF
893 }
894
895 check_ldflags(){
896     log check_ldflags "$@"
897     test_ldflags "$@" && add_ldflags "$@"
898 }
899
900 test_stripflags(){
901     log test_stripflags "$@"
902     # call check_cc to get a fresh TMPO
903     check_cc <<EOF
904 int main(void) { return 0; }
905 EOF
906     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
907 }
908
909 check_stripflags(){
910     log check_stripflags "$@"
911     test_stripflags "$@" && add_stripflags "$@"
912 }
913
914 check_header(){
915     log check_header "$@"
916     header=$1
917     shift
918     disable_safe $header
919     check_cpp "$@" <<EOF && enable_safe $header
920 #include <$header>
921 int x;
922 EOF
923 }
924
925 check_func(){
926     log check_func "$@"
927     func=$1
928     shift
929     disable $func
930     check_ld "cc" "$@" <<EOF && enable $func
931 extern int $func();
932 int main(void){ $func(); }
933 EOF
934 }
935
936 check_mathfunc(){
937     log check_mathfunc "$@"
938     func=$1
939     narg=$2
940     shift 2
941     test $narg = 2 && args="f, g" || args="f"
942     disable $func
943     check_ld "cc" "$@" <<EOF && enable $func
944 #include <math.h>
945 float foo(float f, float g) { return $func($args); }
946 int main(void){ return (int) foo; }
947 EOF
948 }
949
950 check_func_headers(){
951     log check_func_headers "$@"
952     headers=$1
953     funcs=$2
954     shift 2
955     {
956         for hdr in $headers; do
957             echo "#include <$hdr>"
958         done
959         for func in $funcs; do
960             echo "long check_$func(void) { return (long) $func; }"
961         done
962         echo "int main(void) { return 0; }"
963     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
964 }
965
966 check_class_headers_cpp(){
967     log check_class_headers_cpp "$@"
968     headers=$1
969     classes=$2
970     shift 2
971     {
972         for hdr in $headers; do
973             echo "#include <$hdr>"
974         done
975         echo "int main(void) { "
976         i=1
977         for class in $classes; do
978             echo "$class obj$i;"
979             i=$(expr $i + 1)
980         done
981         echo "return 0; }"
982     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
983 }
984
985 check_cpp_condition(){
986     log check_cpp_condition "$@"
987     header=$1
988     condition=$2
989     shift 2
990     check_cpp "$@" <<EOF
991 #include <$header>
992 #if !($condition)
993 #error "unsatisfied condition: $condition"
994 #endif
995 EOF
996 }
997
998 check_lib(){
999     log check_lib "$@"
1000     header="$1"
1001     func="$2"
1002     shift 2
1003     check_header $header && check_func $func "$@" && add_extralibs "$@"
1004 }
1005
1006 check_lib2(){
1007     log check_lib2 "$@"
1008     headers="$1"
1009     funcs="$2"
1010     shift 2
1011     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1012 }
1013
1014 check_lib_cpp(){
1015     log check_lib_cpp "$@"
1016     headers="$1"
1017     classes="$2"
1018     shift 2
1019     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1020 }
1021
1022 check_pkg_config(){
1023     log check_pkg_config "$@"
1024     pkg="$1"
1025     headers="$2"
1026     funcs="$3"
1027     shift 3
1028     check_cmd $pkg_config --exists --print-errors $pkg || return
1029     pkg_cflags=$($pkg_config --cflags $pkg)
1030     pkg_libs=$($pkg_config --libs $pkg)
1031     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1032         set_safe ${pkg}_cflags $pkg_cflags   &&
1033         set_safe ${pkg}_libs   $pkg_libs
1034 }
1035
1036 check_exec(){
1037     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1038 }
1039
1040 check_exec_crash(){
1041     code=$(cat)
1042
1043     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1044     # are safe but may not be available everywhere.  Thus we use
1045     # raise(SIGTERM) instead.  The check is run in a subshell so we
1046     # can redirect the "Terminated" message from the shell.  SIGBUS
1047     # is not defined by standard C so it is used conditionally.
1048
1049     (check_exec "$@") >> $logfile 2>&1 <<EOF
1050 #include <signal.h>
1051 static void sighandler(int sig){
1052     raise(SIGTERM);
1053 }
1054 int foo(void){
1055     $code
1056 }
1057 int (*func_ptr)(void) = foo;
1058 int main(void){
1059     signal(SIGILL, sighandler);
1060     signal(SIGFPE, sighandler);
1061     signal(SIGSEGV, sighandler);
1062 #ifdef SIGBUS
1063     signal(SIGBUS, sighandler);
1064 #endif
1065     return func_ptr();
1066 }
1067 EOF
1068 }
1069
1070 check_type(){
1071     log check_type "$@"
1072     headers=$1
1073     type=$2
1074     shift 2
1075     disable_safe "$type"
1076     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1077 }
1078
1079 check_struct(){
1080     log check_struct "$@"
1081     headers=$1
1082     struct=$2
1083     member=$3
1084     shift 3
1085     disable_safe "${struct}_${member}"
1086     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1087         enable_safe "${struct}_${member}"
1088 }
1089
1090 check_builtin(){
1091     log check_builtin "$@"
1092     name=$1
1093     headers=$2
1094     builtin=$3
1095     shift 3
1096     disable "$name"
1097     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     name="$1"
1102     header="$2"
1103     func="$3"
1104     shift 3
1105     check_lib $header $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require2(){
1109     name="$1"
1110     headers="$2"
1111     func="$3"
1112     shift 3
1113     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1114 }
1115
1116 require_cpp(){
1117     name="$1"
1118     headers="$2"
1119     classes="$3"
1120     shift 3
1121     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1122 }
1123
1124 require_pkg_config(){
1125     pkg="$1"
1126     check_pkg_config "$@" || die "ERROR: $pkg not found"
1127     add_cflags    $(get_safe ${pkg}_cflags)
1128     add_extralibs $(get_safe ${pkg}_libs)
1129 }
1130
1131 require_libfreetype(){
1132     log require_libfreetype "$@"
1133     pkg="freetype2"
1134     check_cmd $pkg_config --exists --print-errors $pkg \
1135       || die "ERROR: $pkg not found"
1136     pkg_cflags=$($pkg_config --cflags $pkg)
1137     pkg_libs=$($pkg_config --libs $pkg)
1138     {
1139         echo "#include <ft2build.h>"
1140         echo "#include FT_FREETYPE_H"
1141         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1142         echo "int main(void) { return 0; }"
1143     } | check_ld "cc" $pkg_cflags $pkg_libs \
1144       && set_safe ${pkg}_cflags $pkg_cflags \
1145       && set_safe ${pkg}_libs   $pkg_libs \
1146       || die "ERROR: $pkg not found"
1147     add_cflags    $(get_safe ${pkg}_cflags)
1148     add_extralibs $(get_safe ${pkg}_libs)
1149 }
1150
1151 hostcc_o(){
1152     eval printf '%s\\n' $HOSTCC_O
1153 }
1154
1155 check_host_cc(){
1156     log check_host_cc "$@"
1157     cat > $TMPC
1158     log_file $TMPC
1159     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1160 }
1161
1162 check_host_cppflags(){
1163     log check_host_cppflags "$@"
1164     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1165 int x;
1166 EOF
1167 }
1168
1169 check_host_cflags(){
1170     log check_host_cflags "$@"
1171     set -- $($host_cflags_filter "$@")
1172     check_host_cc "$@" <<EOF && append host_cflags "$@"
1173 int x;
1174 EOF
1175 }
1176
1177 apply(){
1178     file=$1
1179     shift
1180     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1181 }
1182
1183 cp_if_changed(){
1184     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1185     mkdir -p "$(dirname $2)"
1186     $cp_f "$1" "$2"
1187 }
1188
1189 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1190 # system-dependent things.
1191
1192 COMPONENT_LIST="
1193     bsfs
1194     decoders
1195     demuxers
1196     encoders
1197     filters
1198     hwaccels
1199     indevs
1200     muxers
1201     outdevs
1202     parsers
1203     protocols
1204 "
1205
1206 EXAMPLE_LIST="
1207     decoding_encoding_example
1208     demuxing_decoding_example
1209     filtering_audio_example
1210     filtering_video_example
1211     metadata_example
1212     muxing_example
1213     resampling_audio_example
1214     scaling_video_example
1215     transcode_aac_example
1216 "
1217
1218 EXTERNAL_LIBRARY_LIST="
1219     avisynth
1220     bzlib
1221     crystalhd
1222     fontconfig
1223     frei0r
1224     gnutls
1225     iconv
1226     ladspa
1227     libaacplus
1228     libass
1229     libbluray
1230     libcaca
1231     libcdio
1232     libcelt
1233     libdc1394
1234     libfaac
1235     libfdk_aac
1236     libflite
1237     libfreetype
1238     libgme
1239     libgsm
1240     libiec61883
1241     libilbc
1242     libmodplug
1243     libmp3lame
1244     libnut
1245     libopencore_amrnb
1246     libopencore_amrwb
1247     libopencv
1248     libopenjpeg
1249     libopus
1250     libpulse
1251     libquvi
1252     librtmp
1253     libschroedinger
1254     libshine
1255     libsoxr
1256     libspeex
1257     libssh
1258     libstagefright_h264
1259     libtheora
1260     libtwolame
1261     libutvideo
1262     libv4l2
1263     libvidstab
1264     libvo_aacenc
1265     libvo_amrwbenc
1266     libvorbis
1267     libvpx
1268     libwavpack
1269     libx264
1270     libxavs
1271     libxvid
1272     libzmq
1273     libzvbi
1274     openal
1275     opencl
1276     openssl
1277     x11grab
1278     zlib
1279 "
1280
1281 DOCUMENT_LIST="
1282     doc
1283     htmlpages
1284     manpages
1285     podpages
1286     txtpages
1287 "
1288
1289 HWACCEL_LIST="
1290     dxva2
1291     vaapi
1292     vda
1293     vdpau
1294 "
1295
1296 LIBRARY_LIST="
1297     avcodec
1298     avdevice
1299     avfilter
1300     avformat
1301     avresample
1302     avutil
1303     postproc
1304     swresample
1305     swscale
1306 "
1307
1308 PROGRAM_LIST="
1309     ffplay
1310     ffprobe
1311     ffserver
1312     ffmpeg
1313 "
1314
1315 CONFIG_LIST="
1316     $COMPONENT_LIST
1317     $DOCUMENT_LIST
1318     $EXAMPLE_LIST
1319     $EXTERNAL_LIBRARY_LIST
1320     $HWACCEL_LIST
1321     $LIBRARY_LIST
1322     $PROGRAM_LIST
1323     dct
1324     dwt
1325     error_resilience
1326     fast_unaligned
1327     fft
1328     ftrapv
1329     gpl
1330     gray
1331     hardcoded_tables
1332     incompatible_libav_abi
1333     incompatible_fork_abi
1334     lsp
1335     lzo
1336     mdct
1337     memalign_hack
1338     memory_poisoning
1339     network
1340     nonfree
1341     pic
1342     rdft
1343     runtime_cpudetect
1344     safe_bitstream_reader
1345     shared
1346     small
1347     sram
1348     static
1349     swscale_alpha
1350     thumb
1351     version3
1352     xmm_clobber_test
1353 "
1354
1355 THREADS_LIST='
1356     pthreads
1357     w32threads
1358     os2threads
1359 '
1360
1361 ATOMICS_LIST='
1362     atomics_gcc
1363     atomics_suncc
1364     atomics_win32
1365 '
1366
1367 ARCH_LIST='
1368     aarch64
1369     alpha
1370     arm
1371     avr32
1372     avr32_ap
1373     avr32_uc
1374     bfin
1375     ia64
1376     m68k
1377     mips
1378     mips64
1379     parisc
1380     ppc
1381     ppc64
1382     s390
1383     sh4
1384     sparc
1385     sparc64
1386     tilegx
1387     tilepro
1388     tomi
1389     x86
1390     x86_32
1391     x86_64
1392 '
1393
1394 ARCH_EXT_LIST_ARM='
1395     armv5te
1396     armv6
1397     armv6t2
1398     neon
1399     vfp
1400     vfpv3
1401 '
1402
1403 ARCH_EXT_LIST_X86='
1404     amd3dnow
1405     amd3dnowext
1406     avx
1407     avx2
1408     fma4
1409     i686
1410     mmx
1411     mmxext
1412     sse
1413     sse2
1414     sse3
1415     sse4
1416     sse42
1417     ssse3
1418 '
1419
1420 ARCH_EXT_LIST="
1421     $ARCH_EXT_LIST_ARM
1422     $ARCH_EXT_LIST_X86
1423     altivec
1424     ppc4xx
1425     vis
1426     mipsfpu
1427     mips32r2
1428     mipsdspr1
1429     mipsdspr2
1430 "
1431
1432 HAVE_LIST_CMDLINE='
1433     inline_asm
1434     symver
1435     yasm
1436 '
1437
1438 HAVE_LIST_PUB='
1439     bigendian
1440     fast_unaligned
1441     incompatible_libav_abi
1442     incompatible_fork_abi
1443 '
1444
1445 MATH_FUNCS="
1446     atanf
1447     atan2f
1448     cbrt
1449     cbrtf
1450     cosf
1451     exp2
1452     exp2f
1453     expf
1454     isinf
1455     isnan
1456     ldexpf
1457     llrint
1458     llrintf
1459     log2
1460     log2f
1461     log10f
1462     lrint
1463     lrintf
1464     powf
1465     rint
1466     round
1467     roundf
1468     sinf
1469     trunc
1470     truncf
1471 "
1472
1473 HAVE_LIST="
1474     $ARCH_EXT_LIST
1475     $(add_suffix _external $ARCH_EXT_LIST)
1476     $(add_suffix _inline   $ARCH_EXT_LIST)
1477     $HAVE_LIST_CMDLINE
1478     $HAVE_LIST_PUB
1479     $THREADS_LIST
1480     $ATOMICS_LIST
1481     $MATH_FUNCS
1482     access
1483     aligned_malloc
1484     aligned_stack
1485     alsa_asoundlib_h
1486     altivec_h
1487     arpa_inet_h
1488     asm_mod_q
1489     asm_mod_y
1490     asm_types_h
1491     atomic_cas_ptr
1492     atomics_native
1493     attribute_may_alias
1494     attribute_packed
1495     cdio_paranoia_h
1496     cdio_paranoia_paranoia_h
1497     CL_cl_h
1498     clock_gettime
1499     closesocket
1500     CommandLineToArgvW
1501     cpunop
1502     CryptGenRandom
1503     dcbzl
1504     dev_bktr_ioctl_bt848_h
1505     dev_bktr_ioctl_meteor_h
1506     dev_ic_bt8xx_h
1507     dev_video_bktr_ioctl_bt848_h
1508     dev_video_meteor_ioctl_meteor_h
1509     direct_h
1510     dlfcn_h
1511     dlopen
1512     dos_paths
1513     dxva_h
1514     ebp_available
1515     ebx_available
1516     fast_64bit
1517     fast_clz
1518     fast_cmov
1519     fcntl
1520     fork
1521     getaddrinfo
1522     gethrtime
1523     getopt
1524     GetProcessAffinityMask
1525     GetProcessMemoryInfo
1526     GetProcessTimes
1527     GetSystemTimeAsFileTime
1528     getrusage
1529     getservbyport
1530     gettimeofday
1531     glob
1532     gnu_as
1533     gnu_windres
1534     gsm_h
1535     ibm_asm
1536     inet_aton
1537     io_h
1538     inline_asm_labels
1539     isatty
1540     jack_port_get_latency_range
1541     kbhit
1542     ldbrx
1543     libc_msvcrt
1544     libdc1394_1
1545     libdc1394_2
1546     local_aligned_16
1547     local_aligned_8
1548     localtime_r
1549     loongson
1550     lzo1x_999_compress
1551     machine_ioctl_bt848_h
1552     machine_ioctl_meteor_h
1553     machine_rw_barrier
1554     makeinfo
1555     malloc_h
1556     MapViewOfFile
1557     memalign
1558     MemoryBarrier
1559     mkstemp
1560     mm_empty
1561     mmap
1562     mprotect
1563     nanosleep
1564     openjpeg_1_5_openjpeg_h
1565     PeekNamedPipe
1566     perl
1567     pod2man
1568     poll_h
1569     posix_memalign
1570     pragma_deprecated
1571     pthread_cancel
1572     rdtsc
1573     rsync_contimeout
1574     sarestart
1575     sched_getaffinity
1576     sdl
1577     SetConsoleTextAttribute
1578     setmode
1579     setrlimit
1580     Sleep
1581     sndio_h
1582     socklen_t
1583     soundcard_h
1584     strerror_r
1585     struct_addrinfo
1586     struct_group_source_req
1587     struct_ip_mreq_source
1588     struct_ipv6_mreq
1589     struct_pollfd
1590     struct_rusage_ru_maxrss
1591     struct_sctp_event_subscribe
1592     struct_sockaddr_in6
1593     struct_sockaddr_sa_len
1594     struct_sockaddr_storage
1595     struct_stat_st_mtim_tv_nsec
1596     struct_v4l2_frmivalenum_discrete
1597     symver_asm_label
1598     symver_gnu_asm
1599     sync_val_compare_and_swap
1600     sysconf
1601     sysctl
1602     sys_mman_h
1603     sys_param_h
1604     sys_resource_h
1605     sys_select_h
1606     sys_soundcard_h
1607     sys_time_h
1608     sys_un_h
1609     sys_videoio_h
1610     termios_h
1611     texi2html
1612     threads
1613     unistd_h
1614     usleep
1615     vdpau_x11
1616     vfp_args
1617     VirtualAlloc
1618     windows_h
1619     winsock2_h
1620     xform_asm
1621     xlib
1622     xmm_clobbers
1623 "
1624
1625 # options emitted with CONFIG_ prefix but not available on the command line
1626 CONFIG_EXTRA="
1627     aandcttables
1628     ac3dsp
1629     audio_frame_queue
1630     dsputil
1631     exif
1632     frame_thread_encoder
1633     gcrypt
1634     golomb
1635     gplv3
1636     h263dsp
1637     h264chroma
1638     h264dsp
1639     h264pred
1640     h264qpel
1641     hpeldsp
1642     huffman
1643     lgplv3
1644     lpc
1645     mpegaudio
1646     mpegaudiodsp
1647     mpegvideo
1648     mpegvideoenc
1649     nettle
1650     rangecoder
1651     riffdec
1652     riffenc
1653     rtpdec
1654     rtpenc_chain
1655     sinewin
1656     videodsp
1657     vp3dsp
1658 "
1659
1660 CMDLINE_SELECT="
1661     $ARCH_EXT_LIST
1662     $CONFIG_LIST
1663     $HAVE_LIST_CMDLINE
1664     $THREADS_LIST
1665     asm
1666     cross_compile
1667     debug
1668     extra_warnings
1669     logging
1670     lto
1671     optimizations
1672     rpath
1673     stripping
1674 "
1675
1676 PATHS_LIST='
1677     bindir
1678     datadir
1679     docdir
1680     incdir
1681     libdir
1682     mandir
1683     prefix
1684     shlibdir
1685 '
1686
1687 CMDLINE_SET="
1688     $PATHS_LIST
1689     ar
1690     arch
1691     as
1692     assert_level
1693     build_suffix
1694     cc
1695     cpu
1696     cross_prefix
1697     cxx
1698     dep_cc
1699     extra_version
1700     host_cc
1701     host_cflags
1702     host_ld
1703     host_ldflags
1704     host_libs
1705     host_os
1706     install
1707     ld
1708     logfile
1709     malloc_prefix
1710     nm
1711     optflags
1712     pkg_config
1713     progs_suffix
1714     random_seed
1715     samples
1716     strip
1717     sysinclude
1718     sysroot
1719     target_exec
1720     target_os
1721     target_path
1722     target_samples
1723     tempprefix
1724     toolchain
1725     valgrind
1726     yasmexe
1727 "
1728
1729 CMDLINE_APPEND="
1730     extra_cflags
1731     extra_cxxflags
1732     host_cppflags
1733 "
1734
1735 # code dependency declarations
1736
1737 # architecture extensions
1738
1739 armv5te_deps="arm"
1740 armv6_deps="arm"
1741 armv6t2_deps="arm"
1742 neon_deps="arm"
1743 vfp_deps="arm"
1744 vfpv3_deps="vfp"
1745
1746 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1747
1748 mipsfpu_deps="mips"
1749 mips32r2_deps="mips"
1750 mipsdspr1_deps="mips"
1751 mipsdspr2_deps="mips"
1752
1753 altivec_deps="ppc"
1754 ppc4xx_deps="ppc"
1755
1756 vis_deps="sparc"
1757
1758 cpunop_deps="i686"
1759 x86_64_select="i686"
1760 x86_64_suggest="fast_cmov"
1761
1762 amd3dnow_deps="mmx"
1763 amd3dnowext_deps="amd3dnow"
1764 mmx_deps="x86"
1765 mmxext_deps="mmx"
1766 sse_deps="mmxext"
1767 sse2_deps="sse"
1768 sse3_deps="sse2"
1769 ssse3_deps="sse3"
1770 sse4_deps="ssse3"
1771 sse42_deps="sse4"
1772 avx_deps="sse42"
1773 fma4_deps="avx"
1774 avx2_deps="avx"
1775
1776 mmx_external_deps="yasm"
1777 mmx_inline_deps="inline_asm"
1778 mmx_suggest="mmx_external mmx_inline"
1779
1780 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1781     eval dep=\$${ext}_deps
1782     eval ${ext}_external_deps='"${dep}_external"'
1783     eval ${ext}_inline_deps='"${dep}_inline"'
1784     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1785 done
1786
1787 aligned_stack_if_any="ppc x86"
1788 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1789 fast_clz_if_any="alpha avr32 mips ppc x86"
1790 fast_unaligned_if_any="ppc x86"
1791
1792 inline_asm_deps="!tms470"
1793 need_memalign="altivec neon sse"
1794
1795 symver_if_any="symver_asm_label symver_gnu_asm"
1796
1797 log2_deps="!libc_msvcrt"
1798
1799 # subsystems
1800 dct_select="rdft"
1801 error_resilience_select="dsputil"
1802 frame_thread_encoder_deps="encoders threads"
1803 lpc_select="dsputil"
1804 mdct_select="fft"
1805 rdft_select="fft"
1806 mpegaudio_select="mpegaudiodsp"
1807 mpegaudiodsp_select="dct"
1808 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1809 mpegvideoenc_select="mpegvideo"
1810
1811 # decoders / encoders
1812 aac_decoder_select="mdct sinewin"
1813 aac_encoder_select="audio_frame_queue mdct sinewin"
1814 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1815 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1816 ac3_encoder_select="mdct ac3dsp dsputil"
1817 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1818 aic_decoder_select="dsputil golomb"
1819 alac_encoder_select="lpc"
1820 als_decoder_select="dsputil"
1821 amrnb_decoder_select="lsp"
1822 amrwb_decoder_select="lsp"
1823 amv_decoder_select="dsputil hpeldsp exif"
1824 amv_encoder_select="aandcttables"
1825 ape_decoder_select="dsputil"
1826 asv1_decoder_select="dsputil"
1827 asv1_encoder_select="dsputil"
1828 asv2_decoder_select="dsputil"
1829 asv2_encoder_select="dsputil"
1830 atrac1_decoder_select="mdct sinewin"
1831 atrac3_decoder_select="mdct"
1832 avrn_decoder_select="exif"
1833 bink_decoder_select="dsputil hpeldsp"
1834 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1835 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1836 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1837 cllc_decoder_select="dsputil"
1838 comfortnoise_encoder_select="lpc"
1839 cook_decoder_select="dsputil mdct sinewin"
1840 cscd_decoder_select="lzo"
1841 cscd_decoder_suggest="zlib"
1842 dca_decoder_select="mdct"
1843 dirac_decoder_select="dsputil dwt golomb videodsp"
1844 dnxhd_decoder_select="dsputil"
1845 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1846 dvvideo_decoder_select="dsputil"
1847 dvvideo_encoder_select="dsputil"
1848 dxa_decoder_select="zlib"
1849 eac3_decoder_select="ac3_decoder"
1850 eac3_encoder_select="ac3_encoder"
1851 eamad_decoder_select="aandcttables dsputil mpegvideo"
1852 eatgq_decoder_select="aandcttables"
1853 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1854 exr_decoder_select="zlib"
1855 ffv1_decoder_select="dsputil golomb rangecoder"
1856 ffv1_encoder_select="dsputil rangecoder"
1857 ffvhuff_decoder_select="dsputil"
1858 ffvhuff_encoder_select="dsputil huffman"
1859 flac_decoder_select="golomb"
1860 flac_encoder_select="dsputil golomb lpc"
1861 flashsv_decoder_select="zlib"
1862 flashsv_encoder_select="zlib"
1863 flashsv2_encoder_select="zlib"
1864 flashsv2_decoder_select="zlib"
1865 flv_decoder_select="h263_decoder"
1866 flv_encoder_select="h263_encoder"
1867 fourxm_decoder_select="dsputil"
1868 fraps_decoder_select="dsputil huffman"
1869 g2m_decoder_select="dsputil zlib"
1870 g729_decoder_select="dsputil"
1871 h261_decoder_select="error_resilience mpegvideo"
1872 h261_encoder_select="aandcttables mpegvideoenc"
1873 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1874 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1875 h263i_decoder_select="h263_decoder"
1876 h263p_encoder_select="h263_encoder"
1877 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1878 h264_decoder_suggest="error_resilience"
1879 hevc_decoder_select="dsputil golomb videodsp"
1880 huffyuv_decoder_select="dsputil"
1881 huffyuv_encoder_select="dsputil huffman"
1882 iac_decoder_select="dsputil fft mdct sinewin"
1883 imc_decoder_select="dsputil fft mdct sinewin"
1884 indeo3_decoder_select="hpeldsp"
1885 interplay_video_decoder_select="hpeldsp"
1886 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1887 jpegls_encoder_select="golomb"
1888 jv_decoder_select="dsputil"
1889 lagarith_decoder_select="dsputil"
1890 ljpeg_encoder_select="aandcttables mpegvideoenc"
1891 loco_decoder_select="golomb"
1892 mdec_decoder_select="dsputil error_resilience mpegvideo"
1893 metasound_decoder_select="lsp mdct sinewin"
1894 mimic_decoder_select="dsputil hpeldsp"
1895 mjpeg_decoder_select="dsputil hpeldsp exif"
1896 mjpegb_decoder_select="dsputil hpeldsp exif"
1897 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1898 mlp_decoder_select="dsputil mlp_parser"
1899 motionpixels_decoder_select="dsputil"
1900 mp1_decoder_select="mpegaudio"
1901 mp1float_decoder_select="mpegaudio"
1902 mp2_decoder_select="mpegaudio"
1903 mp2float_decoder_select="mpegaudio"
1904 mp3_decoder_select="mpegaudio"
1905 mp3adu_decoder_select="mpegaudio"
1906 mp3adufloat_decoder_select="mpegaudio"
1907 mp3float_decoder_select="mpegaudio"
1908 mp3on4_decoder_select="mpegaudio"
1909 mp3on4float_decoder_select="mpegaudio"
1910 mpc7_decoder_select="dsputil mpegaudiodsp"
1911 mpc8_decoder_select="dsputil mpegaudiodsp"
1912 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1913 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1914 mpeg1video_decoder_select="error_resilience mpegvideo"
1915 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1916 mpeg2video_decoder_select="error_resilience mpegvideo"
1917 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1918 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1919 mpeg4_encoder_select="h263_encoder"
1920 msmpeg4v1_decoder_select="h263_decoder"
1921 msmpeg4v2_decoder_select="h263_decoder"
1922 msmpeg4v2_encoder_select="h263_encoder"
1923 msmpeg4v3_decoder_select="h263_decoder"
1924 msmpeg4v3_encoder_select="h263_encoder"
1925 mss2_decoder_select="error_resilience vc1_decoder"
1926 mxpeg_decoder_select="dsputil hpeldsp exif"
1927 nellymoser_decoder_select="mdct sinewin"
1928 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1929 nuv_decoder_select="dsputil lzo"
1930 png_decoder_select="zlib"
1931 png_encoder_select="dsputil zlib"
1932 prores_decoder_select="dsputil"
1933 prores_encoder_select="dsputil"
1934 qcelp_decoder_select="lsp"
1935 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1936 ra_144_encoder_select="audio_frame_queue lpc"
1937 ralf_decoder_select="golomb"
1938 rtjpeg_decoder_select="dsputil"
1939 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1940 rv10_encoder_select="h263_encoder"
1941 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1942 rv20_encoder_select="h263_encoder"
1943 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1944 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1945 shorten_decoder_select="golomb"
1946 sipr_decoder_select="lsp"
1947 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1948 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1949 sonic_decoder_select="golomb"
1950 sonic_encoder_select="golomb"
1951 sonic_ls_encoder_select="golomb"
1952 sp5x_decoder_select="dsputil hpeldsp exif"
1953 svq1_decoder_select="hpeldsp"
1954 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1955 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1956 svq3_decoder_suggest="error_resilience zlib"
1957 tak_decoder_select="dsputil"
1958 theora_decoder_select="vp3_decoder"
1959 tiff_decoder_suggest="zlib"
1960 tiff_encoder_suggest="zlib"
1961 thp_decoder_select="dsputil hpeldsp exif"
1962 truehd_decoder_select="mlp_parser"
1963 truemotion2_decoder_select="dsputil"
1964 truespeech_decoder_select="dsputil"
1965 tscc_decoder_select="zlib"
1966 twinvq_decoder_select="mdct lsp sinewin"
1967 utvideo_decoder_select="dsputil"
1968 utvideo_encoder_select="dsputil huffman"
1969 vble_decoder_select="dsputil"
1970 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1971 vc1image_decoder_select="vc1_decoder"
1972 vorbis_decoder_select="mdct"
1973 vorbis_encoder_select="mdct"
1974 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1975 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1976 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1977 vp6a_decoder_select="vp6_decoder"
1978 vp6f_decoder_select="vp6_decoder"
1979 vp8_decoder_select="h264pred videodsp"
1980 vp9_decoder_select="videodsp"
1981 webp_decoder_select="vp8_decoder"
1982 wmapro_decoder_select="mdct sinewin"
1983 wmav1_decoder_select="mdct sinewin"
1984 wmav1_encoder_select="mdct sinewin"
1985 wmav2_decoder_select="mdct sinewin"
1986 wmav2_encoder_select="mdct sinewin"
1987 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1988 wmv1_decoder_select="h263_decoder"
1989 wmv1_encoder_select="h263_encoder"
1990 wmv2_decoder_select="h263_decoder videodsp"
1991 wmv2_encoder_select="h263_encoder"
1992 wmv3_decoder_select="vc1_decoder"
1993 wmv3image_decoder_select="wmv3_decoder"
1994 zerocodec_decoder_select="zlib"
1995 zlib_decoder_select="zlib"
1996 zlib_encoder_select="zlib"
1997 zmbv_decoder_select="zlib"
1998 zmbv_encoder_select="zlib"
1999
2000 # hardware accelerators
2001 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2002 dxva2_deps="dxva2api_h"
2003 vaapi_deps="va_va_h"
2004 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2005 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2006 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2007
2008 h263_vaapi_hwaccel_deps="vaapi"
2009 h263_vaapi_hwaccel_select="h263_decoder"
2010 h263_vdpau_hwaccel_deps="vdpau"
2011 h263_vdpau_hwaccel_select="h263_decoder"
2012 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2013 h264_dxva2_hwaccel_deps="dxva2"
2014 h264_dxva2_hwaccel_select="h264_decoder"
2015 h264_vaapi_hwaccel_deps="vaapi"
2016 h264_vaapi_hwaccel_select="h264_decoder"
2017 h264_vda_decoder_deps="vda"
2018 h264_vda_decoder_select="h264_decoder"
2019 h264_vda_hwaccel_deps="vda"
2020 h264_vda_hwaccel_select="h264_decoder"
2021 h264_vdpau_decoder_deps="vdpau"
2022 h264_vdpau_decoder_select="h264_decoder"
2023 h264_vdpau_hwaccel_deps="vdpau"
2024 h264_vdpau_hwaccel_select="h264_decoder"
2025 mpeg_vdpau_decoder_deps="vdpau"
2026 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2027 mpeg1_vdpau_decoder_deps="vdpau"
2028 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2029 mpeg1_vdpau_hwaccel_deps="vdpau"
2030 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2031 mpeg2_crystalhd_decoder_select="crystalhd"
2032 mpeg2_dxva2_hwaccel_deps="dxva2"
2033 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2034 mpeg2_vaapi_hwaccel_deps="vaapi"
2035 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2036 mpeg2_vdpau_hwaccel_deps="vdpau"
2037 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2038 mpeg4_crystalhd_decoder_select="crystalhd"
2039 mpeg4_vaapi_hwaccel_deps="vaapi"
2040 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2041 mpeg4_vdpau_decoder_deps="vdpau"
2042 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2043 mpeg4_vdpau_hwaccel_deps="vdpau"
2044 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2045 msmpeg4_crystalhd_decoder_select="crystalhd"
2046 vc1_crystalhd_decoder_select="crystalhd"
2047 vc1_dxva2_hwaccel_deps="dxva2"
2048 vc1_dxva2_hwaccel_select="vc1_decoder"
2049 vc1_vaapi_hwaccel_deps="vaapi"
2050 vc1_vaapi_hwaccel_select="vc1_decoder"
2051 vc1_vdpau_decoder_deps="vdpau"
2052 vc1_vdpau_decoder_select="vc1_decoder"
2053 vc1_vdpau_hwaccel_deps="vdpau"
2054 vc1_vdpau_hwaccel_select="vc1_decoder"
2055 wmv3_crystalhd_decoder_select="crystalhd"
2056 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2057 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2058 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2059 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2060
2061 # parsers
2062 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2063 hevc_parser_select="hevc_decoder"
2064 mpeg4video_parser_select="error_resilience mpegvideo"
2065 mpegvideo_parser_select="error_resilience mpegvideo"
2066 vc1_parser_select="mpegvideo"
2067
2068 # external libraries
2069 libaacplus_encoder_deps="libaacplus"
2070 libcelt_decoder_deps="libcelt"
2071 libfaac_encoder_deps="libfaac"
2072 libfaac_encoder_select="audio_frame_queue"
2073 libfdk_aac_decoder_deps="libfdk_aac"
2074 libfdk_aac_encoder_deps="libfdk_aac"
2075 libfdk_aac_encoder_select="audio_frame_queue"
2076 libgme_demuxer_deps="libgme"
2077 libgsm_decoder_deps="libgsm"
2078 libgsm_encoder_deps="libgsm"
2079 libgsm_ms_decoder_deps="libgsm"
2080 libgsm_ms_encoder_deps="libgsm"
2081 libilbc_decoder_deps="libilbc"
2082 libilbc_encoder_deps="libilbc"
2083 libmodplug_demuxer_deps="libmodplug"
2084 libmp3lame_encoder_deps="libmp3lame"
2085 libmp3lame_encoder_select="audio_frame_queue"
2086 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2087 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2088 libopencore_amrnb_encoder_select="audio_frame_queue"
2089 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2090 libopenjpeg_decoder_deps="libopenjpeg"
2091 libopenjpeg_encoder_deps="libopenjpeg"
2092 libopus_decoder_deps="libopus"
2093 libopus_encoder_deps="libopus"
2094 libopus_encoder_select="audio_frame_queue"
2095 libquvi_demuxer_deps="libquvi"
2096 libschroedinger_decoder_deps="libschroedinger"
2097 libschroedinger_encoder_deps="libschroedinger"
2098 libshine_encoder_deps="libshine"
2099 libshine_encoder_select="audio_frame_queue"
2100 libspeex_decoder_deps="libspeex"
2101 libspeex_encoder_deps="libspeex"
2102 libspeex_encoder_select="audio_frame_queue"
2103 libstagefright_h264_decoder_deps="libstagefright_h264"
2104 libtheora_encoder_deps="libtheora"
2105 libtwolame_encoder_deps="libtwolame"
2106 libvo_aacenc_encoder_deps="libvo_aacenc"
2107 libvo_aacenc_encoder_select="audio_frame_queue"
2108 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2109 libvorbis_decoder_deps="libvorbis"
2110 libvorbis_encoder_deps="libvorbis"
2111 libvorbis_encoder_select="audio_frame_queue"
2112 libvpx_vp8_decoder_deps="libvpx"
2113 libvpx_vp8_encoder_deps="libvpx"
2114 libvpx_vp9_decoder_deps="libvpx"
2115 libvpx_vp9_encoder_deps="libvpx"
2116 libwavpack_encoder_deps="libwavpack"
2117 libx264_encoder_deps="libx264"
2118 libx264rgb_encoder_deps="libx264"
2119 libxavs_encoder_deps="libxavs"
2120 libxvid_encoder_deps="libxvid"
2121 libutvideo_decoder_deps="libutvideo"
2122 libutvideo_encoder_deps="libutvideo"
2123 libzvbi_teletext_decoder_deps="libzvbi"
2124
2125 # demuxers / muxers
2126 ac3_demuxer_select="ac3_parser"
2127 asf_demuxer_select="riffdec"
2128 asf_muxer_select="riffenc"
2129 asf_stream_muxer_select="asf_muxer"
2130 avi_demuxer_select="riffdec"
2131 avi_muxer_select="riffenc"
2132 avisynth_demuxer_deps="avisynth"
2133 avisynth_demuxer_select="riffdec"
2134 caf_demuxer_select="riffdec"
2135 dirac_demuxer_select="dirac_parser"
2136 dts_demuxer_select="dca_parser"
2137 dtshd_demuxer_select="dca_parser"
2138 dxa_demuxer_select="riffdec"
2139 eac3_demuxer_select="ac3_parser"
2140 f4v_muxer_select="mov_muxer"
2141 flac_demuxer_select="flac_parser"
2142 hds_muxer_select="flv_muxer"
2143 hls_muxer_select="mpegts_muxer"
2144 ipod_muxer_select="mov_muxer"
2145 ismv_muxer_select="mov_muxer"
2146 libnut_demuxer_deps="libnut"
2147 libnut_muxer_deps="libnut"
2148 matroska_audio_muxer_select="matroska_muxer"
2149 matroska_demuxer_select="riffdec"
2150 matroska_demuxer_suggest="bzlib lzo zlib"
2151 matroska_muxer_select="riffenc"
2152 mmf_muxer_select="riffenc"
2153 mov_demuxer_select="riffdec"
2154 mov_demuxer_suggest="zlib"
2155 mov_muxer_select="riffenc rtpenc_chain"
2156 mp3_demuxer_select="mpegaudio_parser"
2157 mp4_muxer_select="mov_muxer"
2158 mpegts_muxer_select="adts_muxer latm_muxer"
2159 mpegtsraw_demuxer_select="mpegts_demuxer"
2160 mxf_d10_muxer_select="mxf_muxer"
2161 nut_muxer_select="riffenc"
2162 nuv_demuxer_select="riffdec"
2163 ogg_demuxer_select="golomb"
2164 psp_muxer_select="mov_muxer"
2165 rtp_demuxer_select="sdp_demuxer"
2166 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2167 rtsp_demuxer_select="http_protocol rtpdec"
2168 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2169 sap_demuxer_select="sdp_demuxer"
2170 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2171 sdp_demuxer_select="rtpdec"
2172 smoothstreaming_muxer_select="ismv_muxer"
2173 spdif_muxer_select="aac_parser"
2174 tak_demuxer_select="tak_parser"
2175 tg2_muxer_select="mov_muxer"
2176 tgp_muxer_select="mov_muxer"
2177 vobsub_demuxer_select="mpegps_demuxer"
2178 w64_demuxer_select="wav_demuxer"
2179 w64_muxer_select="wav_muxer"
2180 wav_demuxer_select="riffdec"
2181 wav_muxer_select="riffenc"
2182 webm_muxer_select="riffenc"
2183 wtv_demuxer_select="riffdec"
2184 xmv_demuxer_select="riffdec"
2185 xwma_demuxer_select="riffdec"
2186
2187 # indevs / outdevs
2188 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2189 alsa_outdev_deps="alsa_asoundlib_h"
2190 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2191 caca_outdev_deps="libcaca"
2192 dshow_indev_deps="IBaseFilter"
2193 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2194 dv1394_indev_deps="dv1394"
2195 dv1394_indev_select="dv_demuxer"
2196 fbdev_indev_deps="linux_fb_h"
2197 fbdev_outdev_deps="linux_fb_h"
2198 iec61883_indev_deps="libiec61883"
2199 jack_indev_deps="jack_jack_h sem_timedwait"
2200 lavfi_indev_deps="avfilter"
2201 libcdio_indev_deps="libcdio"
2202 libdc1394_indev_deps="libdc1394"
2203 libv4l2_indev_deps="libv4l2"
2204 openal_indev_deps="openal"
2205 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2206 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2207 pulse_indev_deps="libpulse"
2208 pulse_outdev_deps="libpulse"
2209 sdl_outdev_deps="sdl"
2210 sndio_indev_deps="sndio_h"
2211 sndio_outdev_deps="sndio_h"
2212 v4l_indev_deps="linux_videodev_h"
2213 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2214 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2215 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2216 vfwcap_indev_extralibs="-lavicap32"
2217 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2218 xv_outdev_extralibs="-lXv -lX11 -lXext"
2219 x11grab_indev_deps="x11grab"
2220
2221 # protocols
2222 bluray_protocol_deps="libbluray"
2223 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2224 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2225 ffrtmpcrypt_protocol_select="tcp_protocol"
2226 ffrtmphttp_protocol_deps="!librtmp_protocol"
2227 ffrtmphttp_protocol_select="http_protocol"
2228 ftp_protocol_select="tcp_protocol"
2229 gopher_protocol_select="network"
2230 httpproxy_protocol_select="tcp_protocol"
2231 http_protocol_select="tcp_protocol"
2232 https_protocol_select="tls_protocol"
2233 librtmp_protocol_deps="librtmp"
2234 librtmpe_protocol_deps="librtmp"
2235 librtmps_protocol_deps="librtmp"
2236 librtmpt_protocol_deps="librtmp"
2237 librtmpte_protocol_deps="librtmp"
2238 libssh_protocol_deps="libssh"
2239 mmsh_protocol_select="http_protocol"
2240 mmst_protocol_select="network"
2241 rtmp_protocol_deps="!librtmp_protocol"
2242 rtmp_protocol_select="tcp_protocol"
2243 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2244 rtmps_protocol_deps="!librtmp_protocol"
2245 rtmps_protocol_select="tls_protocol"
2246 rtmpt_protocol_select="ffrtmphttp_protocol"
2247 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2248 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2249 rtp_protocol_select="udp_protocol"
2250 sctp_protocol_deps="struct_sctp_event_subscribe"
2251 sctp_protocol_select="network"
2252 srtp_protocol_select="rtp_protocol"
2253 tcp_protocol_select="network"
2254 tls_protocol_deps_any="openssl gnutls"
2255 tls_protocol_select="tcp_protocol"
2256 udp_protocol_select="network"
2257 unix_protocol_deps="sys_un_h"
2258 unix_protocol_select="network"
2259
2260 # filters
2261 aconvert_filter_deps="swresample"
2262 amovie_filter_deps="avcodec avformat"
2263 aresample_filter_deps="swresample"
2264 ass_filter_deps="libass"
2265 asyncts_filter_deps="avresample"
2266 atempo_filter_deps="avcodec"
2267 atempo_filter_select="rdft"
2268 azmq_filter_deps="libzmq"
2269 blackframe_filter_deps="gpl"
2270 boxblur_filter_deps="gpl"
2271 colormatrix_filter_deps="gpl"
2272 cropdetect_filter_deps="gpl"
2273 dctdnoiz_filter_deps="avcodec"
2274 dctdnoiz_filter_select="fft"
2275 delogo_filter_deps="gpl"
2276 deshake_filter_deps="avcodec"
2277 deshake_filter_select="dsputil"
2278 drawtext_filter_deps="libfreetype"
2279 ebur128_filter_deps="gpl"
2280 flite_filter_deps="libflite"
2281 frei0r_filter_deps="frei0r dlopen"
2282 frei0r_filter_extralibs='$ldl'
2283 frei0r_src_filter_deps="frei0r dlopen"
2284 frei0r_src_filter_extralibs='$ldl'
2285 geq_filter_deps="gpl"
2286 histeq_filter_deps="gpl"
2287 hqdn3d_filter_deps="gpl"
2288 interlace_filter_deps="gpl"
2289 kerndeint_filter_deps="gpl"
2290 ladspa_filter_deps="ladspa dlopen"
2291 mcdeint_filter_deps="avcodec gpl"
2292 movie_filter_deps="avcodec avformat"
2293 mp_filter_deps="gpl avcodec swscale inline_asm"
2294 mpdecimate_filter_deps="gpl avcodec"
2295 mptestsrc_filter_deps="gpl"
2296 negate_filter_deps="lut_filter"
2297 perspective_filter_deps="gpl"
2298 resample_filter_deps="avresample"
2299 ocv_filter_deps="libopencv"
2300 owdenoise_filter_deps="gpl"
2301 pan_filter_deps="swresample"
2302 phase_filter_deps="gpl"
2303 pp_filter_deps="gpl postproc"
2304 pullup_filter_deps="gpl"
2305 removelogo_filter_deps="avcodec avformat swscale"
2306 sab_filter_deps="gpl swscale"
2307 scale_filter_deps="swscale"
2308 smartblur_filter_deps="gpl swscale"
2309 showspectrum_filter_deps="avcodec"
2310 showspectrum_filter_select="rdft"
2311 spp_filter_deps="gpl avcodec"
2312 spp_filter_select="fft"
2313 stereo3d_filter_deps="gpl"
2314 subtitles_filter_deps="avformat avcodec libass"
2315 super2xsai_filter_deps="gpl"
2316 tinterlace_filter_deps="gpl"
2317 vidstabdetect_filter_deps="libvidstab"
2318 vidstabtransform_filter_deps="libvidstab"
2319 yadif_filter_deps="gpl"
2320 pixfmts_super2xsai_test_deps="super2xsai_filter"
2321 tinterlace_merge_test_deps="tinterlace_filter"
2322 tinterlace_pad_test_deps="tinterlace_filter"
2323 zmq_filter_deps="libzmq"
2324
2325 # examples
2326 decoding_encoding_example_deps="avcodec avutil"
2327 demuxing_decoding_example_deps="avcodec avformat avutil"
2328 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2329 filtering_video_example_deps="avfilter avcodec avformat avutil"
2330 metadata_example_deps="avformat avutil"
2331 muxing_example_deps="avcodec avformat avutil swscale"
2332 resampling_audio_example_deps="avutil swresample"
2333 scaling_video_example_deps="avutil swscale"
2334 transcode_aac_example_deps="avcodec avformat swresample"
2335
2336 # libraries
2337 avcodec_deps="avutil"
2338 avdevice_deps="avutil avcodec avformat"
2339 avfilter_deps="avutil"
2340 avformat_deps="avutil avcodec"
2341 avresample_deps="avutil"
2342 postproc_deps="avutil gpl"
2343 swscale_deps="avutil"
2344
2345 # programs
2346 ffmpeg_deps="avcodec avfilter avformat swresample"
2347 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2348                null_filter
2349                setpts_filter trim_filter"
2350 ffplay_deps="avcodec avformat swscale swresample sdl"
2351 ffplay_select="rdft crop_filter"
2352 ffprobe_deps="avcodec avformat"
2353 ffserver_deps="avformat fork sarestart"
2354 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2355 ffserver_extralibs='$ldl'
2356
2357 # documentation
2358 podpages_deps="perl"
2359 manpages_deps="perl pod2man"
2360 htmlpages_deps="perl texi2html"
2361 txtpages_deps="perl makeinfo"
2362 doc_deps_any="manpages htmlpages podpages txtpages"
2363
2364 # default parameters
2365
2366 logfile="config.log"
2367
2368 # installation paths
2369 prefix_default="/usr/local"
2370 bindir_default='${prefix}/bin'
2371 datadir_default='${prefix}/share/ffmpeg'
2372 docdir_default='${prefix}/share/doc/ffmpeg'
2373 incdir_default='${prefix}/include'
2374 libdir_default='${prefix}/lib'
2375 mandir_default='${prefix}/share/man'
2376 shlibdir_default="$libdir_default"
2377
2378 # toolchain
2379 ar_default="ar"
2380 cc_default="gcc"
2381 cxx_default="g++"
2382 host_cc_default="gcc"
2383 cp_f="cp -f"
2384 install="install"
2385 ln_s="ln -s -f"
2386 nm_default="nm -g"
2387 objformat="elf"
2388 pkg_config_default=pkg-config
2389 ranlib="ranlib"
2390 strip_default="strip"
2391 yasmexe_default="yasm"
2392 windres_default="windres"
2393
2394 nogas=":"
2395
2396 # machine
2397 arch_default=$(uname -m)
2398 cpu="generic"
2399
2400 # OS
2401 target_os_default=$(tolower $(uname -s))
2402 host_os=$target_os_default
2403
2404 # configurable options
2405 enable $PROGRAM_LIST
2406 enable $DOCUMENT_LIST
2407 enable $EXAMPLE_LIST
2408 enable $(filter_out avresample $LIBRARY_LIST)
2409 enable stripping
2410
2411 enable asm
2412 enable debug
2413 enable doc
2414 enable optimizations
2415 enable runtime_cpudetect
2416 enable safe_bitstream_reader
2417 enable static
2418 enable swscale_alpha
2419
2420 # Enable hwaccels by default.
2421 enable dxva2 vaapi vdpau
2422
2423 # build settings
2424 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2425 LIBPREF="lib"
2426 LIBSUF=".a"
2427 FULLNAME='$(NAME)$(BUILDSUF)'
2428 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2429 SLIBPREF="lib"
2430 SLIBSUF=".so"
2431 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2432 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2433 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2434 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2435 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2436 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2437
2438 asflags_filter=echo
2439 cflags_filter=echo
2440 ldflags_filter=echo
2441
2442 AS_C='-c'
2443 AS_O='-o $@'
2444 CC_C='-c'
2445 CC_E='-E -o $@'
2446 CC_O='-o $@'
2447 CXX_C='-c'
2448 CXX_O='-o $@'
2449 LD_O='-o $@'
2450 LD_LIB='-l%'
2451 LD_PATH='-L'
2452 HOSTCC_C='-c'
2453 HOSTCC_O='-o $@'
2454 HOSTLD_O='-o $@'
2455
2456 host_cflags='-O3 -g'
2457 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2458 host_libs='-lm'
2459 host_cflags_filter=echo
2460 host_ldflags_filter=echo
2461
2462 target_path='$(CURDIR)'
2463
2464 # since the object filename is not given with the -MM flag, the compiler
2465 # is only able to print the basename, and we must add the path ourselves
2466 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2467 DEPFLAGS='-MM'
2468
2469 # find source path
2470 if test -f configure; then
2471     source_path=.
2472 else
2473     source_path=$(cd $(dirname "$0"); pwd)
2474     echo "$source_path" | grep -q '[[:blank:]]' &&
2475         die "Out of tree builds are impossible with whitespace in source path."
2476     test -e "$source_path/config.h" &&
2477         die "Out of tree builds are impossible with config.h in source dir."
2478 fi
2479
2480 for v in "$@"; do
2481     r=${v#*=}
2482     l=${v%"$r"}
2483     r=$(sh_quote "$r")
2484     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2485 done
2486
2487 find_things(){
2488     thing=$1
2489     pattern=$2
2490     file=$source_path/$3
2491     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2492 }
2493
2494 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2495 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2496 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2497 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2498 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2499 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2500 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2501 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2502 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2503 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2504 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2505
2506 ALL_COMPONENTS="
2507     $BSF_LIST
2508     $DECODER_LIST
2509     $DEMUXER_LIST
2510     $ENCODER_LIST
2511     $FILTER_LIST
2512     $HWACCEL_LIST
2513     $INDEV_LIST
2514     $MUXER_LIST
2515     $OUTDEV_LIST
2516     $PARSER_LIST
2517     $PROTOCOL_LIST
2518 "
2519
2520 for n in $COMPONENT_LIST; do
2521     v=$(toupper ${n%s})_LIST
2522     eval enable \$$v
2523     eval ${n}_if_any="\$$v"
2524 done
2525
2526 enable $ARCH_EXT_LIST
2527
2528 die_unknown(){
2529     echo "Unknown option \"$1\"."
2530     echo "See $0 --help for available options."
2531     exit 1
2532 }
2533
2534 print_3_columns() {
2535     cat | tr ' ' '\n' | sort | pr -r -3 -t
2536 }
2537
2538 show_list() {
2539     suffix=_$1
2540     shift
2541     echo $* | sed s/$suffix//g | print_3_columns
2542     exit 0
2543 }
2544
2545 rand_list(){
2546     IFS=', '
2547     set -- $*
2548     unset IFS
2549     for thing; do
2550         comp=${thing%:*}
2551         prob=${thing#$comp}
2552         prob=${prob#:}
2553         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2554         echo "prob ${prob:-0.5}"
2555         printf '%s\n' $comp
2556     done
2557 }
2558
2559 do_random(){
2560     action=$1
2561     shift
2562     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2563     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2564 }
2565
2566 for opt do
2567     optval="${opt#*=}"
2568     case "$opt" in
2569         --extra-ldflags=*)
2570             add_ldflags $optval
2571         ;;
2572         --extra-libs=*)
2573             add_extralibs $optval
2574         ;;
2575         --disable-devices)
2576             disable $INDEV_LIST $OUTDEV_LIST
2577         ;;
2578         --enable-debug=*)
2579             debuglevel="$optval"
2580         ;;
2581         --disable-programs)
2582             disable $PROGRAM_LIST
2583         ;;
2584         --disable-everything)
2585             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2586         ;;
2587         --disable-all)
2588             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2589             disable $LIBRARY_LIST $PROGRAM_LIST doc
2590         ;;
2591         --enable-random|--disable-random)
2592             action=${opt%%-random}
2593             do_random ${action#--} $COMPONENT_LIST
2594         ;;
2595         --enable-random=*|--disable-random=*)
2596             action=${opt%%-random=*}
2597             do_random ${action#--} $optval
2598         ;;
2599         --enable-*=*|--disable-*=*)
2600             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2601             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2602             eval list=\$$(toupper $thing)_LIST
2603             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2604             list=$(filter "$name" $list)
2605             [ "$list" = "" ] && warn "Option $opt did not match anything"
2606             $action $list
2607         ;;
2608         --enable-?*|--disable-?*)
2609             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2610             if is_in $option $COMPONENT_LIST; then
2611                 test $action = disable && action=unset
2612                 eval $action \$$(toupper ${option%s})_LIST
2613             elif is_in $option $CMDLINE_SELECT; then
2614                 $action $option
2615             else
2616                 die_unknown $opt
2617             fi
2618         ;;
2619         --list-*)
2620             NAME="${opt#--list-}"
2621             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2622             NAME=${NAME%s}
2623             eval show_list $NAME \$$(toupper $NAME)_LIST
2624         ;;
2625         --help|-h) show_help
2626         ;;
2627         --fatal-warnings) enable fatal_warnings
2628         ;;
2629         *)
2630             optname="${opt%%=*}"
2631             optname="${optname#--}"
2632             optname=$(echo "$optname" | sed 's/-/_/g')
2633             if is_in $optname $CMDLINE_SET; then
2634                 eval $optname='$optval'
2635             elif is_in $optname $CMDLINE_APPEND; then
2636                 append $optname "$optval"
2637             else
2638                 die_unknown $opt
2639             fi
2640         ;;
2641     esac
2642 done
2643
2644 disabled logging && logfile=/dev/null
2645
2646 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2647 set >> $logfile
2648
2649 test -n "$cross_prefix" && enable cross_compile
2650
2651 if enabled cross_compile; then
2652     test -n "$arch" && test -n "$target_os" ||
2653         die "Must specify target arch and OS when cross-compiling"
2654 fi
2655
2656 ar_default="${cross_prefix}${ar_default}"
2657 cc_default="${cross_prefix}${cc_default}"
2658 cxx_default="${cross_prefix}${cxx_default}"
2659 nm_default="${cross_prefix}${nm_default}"
2660 pkg_config_default="${cross_prefix}${pkg_config_default}"
2661 ranlib="${cross_prefix}${ranlib}"
2662 strip_default="${cross_prefix}${strip_default}"
2663 windres_default="${cross_prefix}${windres_default}"
2664
2665 sysinclude_default="${sysroot}/usr/include"
2666
2667 test -n "$valgrind" && toolchain="valgrind-memcheck"
2668
2669 case "$toolchain" in
2670     clang-asan)
2671         cc_default="clang"
2672         add_cflags  -fsanitize=address
2673         add_ldflags -fsanitize=address
2674     ;;
2675     clang-tsan)
2676         cc_default="clang"
2677         add_cflags  -fsanitize=thread -pie
2678         add_ldflags -fsanitize=thread -pie
2679     ;;
2680     gcc-asan)
2681         cc_default="gcc"
2682         add_cflags  -fsanitize=address
2683         add_ldflags -fsanitize=address
2684     ;;
2685     gcc-tsan)
2686         cc_default="gcc"
2687         add_cflags  -fsanitize=thread -pie -fPIC
2688         add_ldflags -fsanitize=thread -pie -fPIC
2689     ;;
2690     valgrind-massif)
2691         target_exec_default=${valgrind:-"valgrind"}
2692         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"
2693     ;;
2694     valgrind-memcheck)
2695         target_exec_default=${valgrind:-"valgrind"}
2696         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2697     ;;
2698     msvc)
2699         # Check whether the current MSVC version needs the C99 converter.
2700         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2701         # support enough of C99 to build ffmpeg. Default to the new
2702         # behaviour if the regexp was unable to match anything, since this
2703         # successfully parses the version number of existing supported
2704         # versions that require the converter (MSVC 2010 and 2012).
2705         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2706         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2707             cc_default="cl"
2708         else
2709             cc_default="c99wrap cl"
2710         fi
2711         ld_default="link"
2712         nm_default="dumpbin -symbols"
2713         ar_default="lib"
2714         target_os_default="win32"
2715         # Use a relative path for TMPDIR. This makes sure all the
2716         # ffconf temp files are written with a relative path, avoiding
2717         # issues with msys/win32 path conversion for MSVC parameters
2718         # such as -Fo<file> or -out:<file>.
2719         TMPDIR=.
2720     ;;
2721     icl)
2722         cc_default="icl"
2723         ld_default="xilink"
2724         nm_default="dumpbin -symbols"
2725         ar_default="xilib"
2726         target_os_default="win32"
2727         TMPDIR=.
2728     ;;
2729     gcov)
2730         add_cflags  -fprofile-arcs -ftest-coverage
2731         add_ldflags -fprofile-arcs -ftest-coverage
2732     ;;
2733     hardened)
2734         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2735         add_ldflags -Wl,-z,relro -Wl,-z,now
2736     ;;
2737     ?*)
2738         die "Unknown toolchain $toolchain"
2739     ;;
2740 esac
2741
2742 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2743 enabled cross_compile || host_cc_default=$cc
2744 set_default host_cc
2745
2746 if ! $pkg_config --version >/dev/null 2>&1; then
2747     warn "$pkg_config not found, library detection may fail."
2748     pkg_config=false
2749 fi
2750
2751 exesuf() {
2752     case $1 in
2753         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2754     esac
2755 }
2756
2757 EXESUF=$(exesuf $target_os)
2758 HOSTEXESUF=$(exesuf $host_os)
2759
2760 # set temporary file name
2761 : ${TMPDIR:=$TEMPDIR}
2762 : ${TMPDIR:=$TMP}
2763 : ${TMPDIR:=/tmp}
2764
2765 if [ -n "$tempprefix" ] ; then
2766     mktemp(){
2767         echo $tempprefix.${HOSTNAME}.${UID}
2768     }
2769 elif ! check_cmd mktemp -u XXXXXX; then
2770     # simple replacement for missing mktemp
2771     # NOT SAFE FOR GENERAL USE
2772     mktemp(){
2773         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2774     }
2775 fi
2776
2777 tmpfile(){
2778     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2779         (set -C; exec > $tmp) 2>/dev/null ||
2780         die "Unable to create temporary file in $TMPDIR."
2781     append TMPFILES $tmp
2782     eval $1=$tmp
2783 }
2784
2785 trap 'rm -f -- $TMPFILES' EXIT
2786
2787 tmpfile TMPASM .asm
2788 tmpfile TMPC   .c
2789 tmpfile TMPCPP .cpp
2790 tmpfile TMPE   $EXESUF
2791 tmpfile TMPH   .h
2792 tmpfile TMPO   .o
2793 tmpfile TMPS   .S
2794 tmpfile TMPSH  .sh
2795 tmpfile TMPV   .ver
2796
2797 unset -f mktemp
2798
2799 chmod +x $TMPE
2800
2801 # make sure we can execute files in $TMPDIR
2802 cat > $TMPSH 2>> $logfile <<EOF
2803 #! /bin/sh
2804 EOF
2805 chmod +x $TMPSH >> $logfile 2>&1
2806 if ! $TMPSH >> $logfile 2>&1; then
2807     cat <<EOF
2808 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2809 variable to another directory and make sure that it is not mounted noexec.
2810 EOF
2811     die "Sanity test failed."
2812 fi
2813
2814 ccc_flags(){
2815     for flag; do
2816         case $flag in
2817             -std=c99)           echo -c99                       ;;
2818             -mcpu=*)            echo -arch ${flag#*=}           ;;
2819             -mieee)             echo -ieee                      ;;
2820             -O*|-fast)          echo $flag                      ;;
2821             -fno-math-errno)    echo -assume nomath_errno       ;;
2822             -g)                 echo -g3                        ;;
2823             -Wall)              echo -msg_enable level2         ;;
2824             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2825             -Wl,*)              echo $flag                      ;;
2826             -f*|-W*)                                            ;;
2827             *)                  echo $flag                      ;;
2828         esac
2829    done
2830 }
2831
2832 cparser_flags(){
2833     for flag; do
2834         case $flag in
2835             -Wno-switch)             echo -Wno-switch-enum ;;
2836             -Wno-format-zero-length) ;;
2837             -Wdisabled-optimization) ;;
2838             -Wno-pointer-sign)       echo -Wno-other ;;
2839             *)                       echo $flag ;;
2840         esac
2841     done
2842 }
2843
2844 msvc_common_flags(){
2845     for flag; do
2846         case $flag in
2847             # In addition to specifying certain flags under the compiler
2848             # specific filters, they must be specified here as well or else the
2849             # generic catch all at the bottom will print the original flag.
2850             -Wall)                ;;
2851             -std=c99)             ;;
2852             # Common flags
2853             -fomit-frame-pointer) ;;
2854             -g)                   echo -Z7 ;;
2855             -fno-math-errno)      ;;
2856             -fno-common)          ;;
2857             -fno-signed-zeros)    ;;
2858             -fPIC)                ;;
2859             -mthumb)              ;;
2860             -march=*)             ;;
2861             -lz)                  echo zlib.lib ;;
2862             -lavifil32)           echo vfw32.lib ;;
2863             -lavicap32)           echo vfw32.lib user32.lib ;;
2864             -l*)                  echo ${flag#-l}.lib ;;
2865             *)                    echo $flag ;;
2866         esac
2867     done
2868 }
2869
2870 msvc_flags(){
2871     msvc_common_flags "$@"
2872     for flag; do
2873         case $flag in
2874             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2875                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2876                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2877                                        -wd4554 \
2878                                        -wd4273 ;;
2879         esac
2880     done
2881 }
2882
2883 icl_flags(){
2884     msvc_common_flags "$@"
2885     for flag; do
2886         case $flag in
2887             # Despite what Intel's documentation says -Wall, which is supported
2888             # on Windows, does enable remarks so disable them here.
2889             -Wall)                echo $flag -Qdiag-disable:remark ;;
2890             -std=c99)             echo -Qstd=c99 ;;
2891         esac
2892     done
2893 }
2894
2895 pgi_flags(){
2896     for flag; do
2897         case $flag in
2898             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2899             -fomit-frame-pointer) echo -Mnoframe ;;
2900             -g)                   echo -gopt ;;
2901             *)                    echo $flag ;;
2902         esac
2903     done
2904 }
2905
2906 suncc_flags(){
2907     for flag; do
2908         case $flag in
2909             -march=*|-mcpu=*)
2910                 case "${flag#*=}" in
2911                     native)                   echo -xtarget=native       ;;
2912                     v9|niagara)               echo -xarch=sparc          ;;
2913                     ultrasparc)               echo -xarch=sparcvis       ;;
2914                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2915                     i586|pentium)             echo -xchip=pentium        ;;
2916                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2917                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2918                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2919                     pentium4*)          echo -xtarget=pentium4           ;;
2920                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2921                     *-sse3)             echo -xarch=sse3                 ;;
2922                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2923                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2924                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2925                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2926                     bdver*)                    echo -xarch=avx           ;;
2927                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2928                     k8|opteron|athlon64|athlon-fx)
2929                                                echo -xarch=sse2a         ;;
2930                     athlon*)                   echo -xarch=pentium_proa  ;;
2931                 esac
2932                 ;;
2933             -std=c99)             echo -xc99              ;;
2934             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2935             -fPIC)                echo -KPIC -xcode=pic32 ;;
2936             -W*,*)                echo $flag              ;;
2937             -f*-*|-W*|-mimpure-text)                      ;;
2938             -shared)              echo -G                 ;;
2939             *)                    echo $flag              ;;
2940         esac
2941     done
2942 }
2943
2944 tms470_flags(){
2945     for flag; do
2946         case $flag in
2947             -march=*|-mcpu=*)
2948                 case "${flag#*=}" in
2949                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2950                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2951                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2952                     armv6*|arm11*)          echo -mv=6   ;;
2953                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2954                                             echo -mv=5e  ;;
2955                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2956                 esac
2957                 ;;
2958             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2959             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2960             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2961             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2962             -msoft-float)   echo --float_support=vfplib       ;;
2963             -O[0-3]|-mf=*)  echo $flag                        ;;
2964             -g)             echo -g -mn                       ;;
2965             -pds=*)         echo $flag                        ;;
2966             -D*|-I*)        echo $flag                        ;;
2967             --gcc|--abi=*)  echo $flag                        ;;
2968             -me)            echo $flag                        ;;
2969         esac
2970     done
2971 }
2972
2973 probe_cc(){
2974     pfx=$1
2975     _cc=$2
2976
2977     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2978     unset _ld_o _ldflags _ld_lib _ld_path
2979     unset _depflags _DEPCMD _DEPFLAGS
2980     _flags_filter=echo
2981
2982     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2983         true # no-op to avoid reading stdin in following checks
2984     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2985         _type=llvm_gcc
2986         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2987         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2988         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2989         _cflags_speed='-O3'
2990         _cflags_size='-Os'
2991     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2992         _type=gcc
2993         gcc_version=$($_cc --version | head -n1)
2994         gcc_basever=$($_cc -dumpversion)
2995         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2996         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2997         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2998         if ! $_cc -dumpversion | grep -q '^2\.'; then
2999             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3000         fi
3001         _cflags_speed='-O3'
3002         _cflags_size='-Os'
3003     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3004         _type=icc
3005         _ident=$($_cc --version | head -n1)
3006         _depflags='-MMD'
3007         _cflags_speed='-O3'
3008         _cflags_size='-Os'
3009         _cflags_noopt='-O1'
3010     elif $_cc -v 2>&1 | grep -q xlc; then
3011         _type=xlc
3012         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3013         _cflags_speed='-O5'
3014         _cflags_size='-O5 -qcompact'
3015     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3016         _type=ccc
3017         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3018         _DEPFLAGS='-M'
3019         _cflags_speed='-fast'
3020         _cflags_size='-O1'
3021         _flags_filter=ccc_flags
3022     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3023         test -d "$sysroot" || die "No valid sysroot specified."
3024         _type=armcc
3025         _ident=$($_cc --vsn | head -n1)
3026         armcc_conf="$PWD/armcc.conf"
3027         $_cc --arm_linux_configure                 \
3028              --arm_linux_config_file="$armcc_conf" \
3029              --configure_sysroot="$sysroot"        \
3030              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3031              die "Error creating armcc configuration file."
3032         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3033         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3034         as_default="${cross_prefix}gcc"
3035         _depflags='-MMD'
3036         _cflags_speed='-O3'
3037         _cflags_size='-Os'
3038     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3039         _type=tms470
3040         _ident=$($_cc -version | head -n1 | tr -s ' ')
3041         _flags='--gcc --abi=eabi -me'
3042         _cc_e='-ppl -fe=$@'
3043         _cc_o='-fe=$@'
3044         _depflags='-ppa -ppd=$(@:.o=.d)'
3045         _cflags_speed='-O3 -mf=5'
3046         _cflags_size='-O3 -mf=2'
3047         _flags_filter=tms470_flags
3048     elif $_cc -v 2>&1 | grep -q clang; then
3049         _type=clang
3050         _ident=$($_cc --version | head -n1)
3051         _depflags='-MMD'
3052         _cflags_speed='-O3'
3053         _cflags_size='-Os'
3054     elif $_cc -V 2>&1 | grep -q Sun; then
3055         _type=suncc
3056         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3057         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3058         _DEPFLAGS='-xM1 -xc99'
3059         _ldflags='-std=c99'
3060         _cflags_speed='-O5'
3061         _cflags_size='-O5 -xspace'
3062         _flags_filter=suncc_flags
3063     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3064         _type=pathscale
3065         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3066         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3067         _cflags_speed='-O2'
3068         _cflags_size='-Os'
3069         _flags_filter='filter_out -Wdisabled-optimization'
3070     elif $_cc -v 2>&1 | grep -q Open64; then
3071         _type=open64
3072         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3073         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3074         _cflags_speed='-O2'
3075         _cflags_size='-Os'
3076         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3077     elif $_cc -V 2>&1 | grep -q Portland; then
3078         _type=pgi
3079         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3080         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3081         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3082         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3083         _cflags_noopt="-O"
3084         _flags_filter=pgi_flags
3085     elif $_cc 2>&1 | grep -q Microsoft; then
3086         _type=msvc
3087         _ident=$($cc 2>&1 | head -n1)
3088         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3089         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3090         _cflags_speed="-O2"
3091         _cflags_size="-O1"
3092         if $_cc 2>&1 | grep -q Linker; then
3093             _ld_o='-out:$@'
3094         else
3095             _ld_o='-Fe$@'
3096         fi
3097         _cc_o='-Fo$@'
3098         _cc_e='-P -Fi$@'
3099         _flags_filter=msvc_flags
3100         _ld_lib='lib%.a'
3101         _ld_path='-libpath:'
3102         _flags='-nologo'
3103         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3104         if [ $pfx = hostcc ]; then
3105             append _cflags -Dsnprintf=_snprintf
3106         fi
3107         disable stripping
3108     elif $_cc 2>&1 | grep -q Intel; then
3109         _type=icl
3110         _ident=$($cc 2>&1 | head -n1)
3111         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3112         # Not only is O3 broken on 13.x+ but it is slower on all previous
3113         # versions (tested) as well.
3114         _cflags_speed="-O2"
3115         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3116         if $_cc 2>&1 | grep -q Linker; then
3117             _ld_o='-out:$@'
3118         else
3119             _ld_o='-Fe$@'
3120         fi
3121         _cc_o='-Fo$@'
3122         _cc_e='-P'
3123         _flags_filter=icl_flags
3124         _ld_lib='lib%.a'
3125         _ld_path='-libpath:'
3126         # -Qdiag-error to make icl error when seeing certain unknown arguments
3127         _flags='-nologo -Qdiag-error:4044,10157'
3128         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3129         # with MSVC which enables it by default.
3130         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3131         if [ $pfx = hostcc ]; then
3132             append _cflags -Dsnprintf=_snprintf
3133         fi
3134     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3135         _type=cparser
3136         _ident=$($_cc --version | head -n1)
3137         _depflags='-MMD'
3138         _cflags_speed='-O4'
3139         _cflags_size='-O2'
3140         _flags_filter=cparser_flags
3141     fi
3142
3143     eval ${pfx}_type=\$_type
3144     eval ${pfx}_ident=\$_ident
3145 }
3146
3147 set_ccvars(){
3148     eval ${1}_C=\${_cc_c-\${${1}_C}}
3149     eval ${1}_E=\${_cc_e-\${${1}_E}}
3150     eval ${1}_O=\${_cc_o-\${${1}_O}}
3151
3152     if [ -n "$_depflags" ]; then
3153         eval ${1}_DEPFLAGS=\$_depflags
3154     else
3155         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3156         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3157         eval DEP${1}FLAGS=\$_flags
3158     fi
3159 }
3160
3161 probe_cc cc "$cc"
3162 cflags_filter=$_flags_filter
3163 cflags_speed=$_cflags_speed
3164 cflags_size=$_cflags_size
3165 cflags_noopt=$_cflags_noopt
3166 add_cflags $_flags $_cflags
3167 cc_ldflags=$_ldflags
3168 set_ccvars CC
3169
3170 probe_cc hostcc "$host_cc"
3171 host_cflags_filter=$_flags_filter
3172 add_host_cflags  $_flags $_cflags
3173 set_ccvars HOSTCC
3174
3175 test -n "$cc_type" && enable $cc_type ||
3176     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3177
3178 : ${as_default:=$cc}
3179 : ${dep_cc_default:=$cc}
3180 : ${ld_default:=$cc}
3181 : ${host_ld_default:=$host_cc}
3182 set_default ar as dep_cc ld host_ld windres
3183
3184 probe_cc as "$as"
3185 asflags_filter=$_flags_filter
3186 add_asflags $_flags $_cflags
3187 set_ccvars AS
3188
3189 probe_cc ld "$ld"
3190 ldflags_filter=$_flags_filter
3191 add_ldflags $_flags $_ldflags
3192 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3193 LD_O=${_ld_o-$LD_O}
3194 LD_LIB=${_ld_lib-$LD_LIB}
3195 LD_PATH=${_ld_path-$LD_PATH}
3196
3197 probe_cc hostld "$host_ld"
3198 host_ldflags_filter=$_flags_filter
3199 add_host_ldflags $_flags $_ldflags
3200 HOSTLD_O=${_ld_o-$HOSTLD_O}
3201
3202 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3203     probe_cc depcc "$dep_cc"
3204     CCDEP=${_DEPCMD:-$DEPCMD}
3205     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3206     DEPCCFLAGS=$_flags
3207 fi
3208
3209 if $ar 2>&1 | grep -q Microsoft; then
3210     arflags="-nologo"
3211     ar_o='-out:$@'
3212 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3213     arflags="rq"
3214     ar_o='$@'
3215 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3216     arflags='-Xany -r -c'
3217     ar_o='$@'
3218 else
3219     arflags="rc"
3220     ar_o='$@'
3221 fi
3222
3223 add_cflags $extra_cflags
3224 add_cxxflags $extra_cxxflags
3225 add_asflags $extra_cflags
3226
3227 if test -n "$sysroot"; then
3228     case "$cc_type" in
3229         gcc|llvm_gcc|clang)
3230             add_cppflags --sysroot="$sysroot"
3231             add_ldflags --sysroot="$sysroot"
3232         ;;
3233         tms470)
3234             add_cppflags -I"$sysinclude"
3235             add_ldflags  --sysroot="$sysroot"
3236         ;;
3237     esac
3238 fi
3239
3240 if test "$cpu" = host; then
3241     enabled cross_compile &&
3242         die "--cpu=host makes no sense when cross-compiling."
3243
3244     case "$cc_type" in
3245         gcc|llvm_gcc)
3246             check_native(){
3247                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3248                 sed -n "/cc1.*$1=/{
3249                             s/.*$1=\\([^ ]*\\).*/\\1/
3250                             p
3251                             q
3252                         }" $TMPE
3253             }
3254             cpu=$(check_native -march || check_native -mcpu)
3255         ;;
3256     esac
3257
3258     test "${cpu:-host}" = host &&
3259         die "--cpu=host not supported with compiler $cc"
3260 fi
3261
3262 # Deal with common $arch aliases
3263 case "$arch" in
3264     aarch64|arm64)
3265         arch="aarch64"
3266     ;;
3267     arm*|iPad*|iPhone*)
3268         arch="arm"
3269     ;;
3270     mips*|IP*)
3271         arch="mips"
3272     ;;
3273     parisc*|hppa*)
3274         arch="parisc"
3275     ;;
3276     "Power Macintosh"|ppc*|powerpc*)
3277         arch="ppc"
3278     ;;
3279     s390|s390x)
3280         arch="s390"
3281     ;;
3282     sh4|sh)
3283         arch="sh4"
3284     ;;
3285     sun4u|sparc*)
3286         arch="sparc"
3287     ;;
3288     tilegx|tile-gx)
3289         arch="tilegx"
3290     ;;
3291     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3292         arch="x86"
3293     ;;
3294 esac
3295
3296 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3297 enable $arch
3298
3299 # Add processor-specific flags
3300 if enabled aarch64; then
3301
3302     case $cpu in
3303         armv*)
3304             cpuflags="-march=$cpu"
3305         ;;
3306         *)
3307             cpuflags="-mcpu=$cpu"
3308         ;;
3309     esac
3310
3311 elif enabled alpha; then
3312
3313     cpuflags="-mcpu=$cpu"
3314
3315 elif enabled arm; then
3316
3317     check_arm_arch() {
3318         check_cpp_condition stddef.h \
3319             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3320             $cpuflags
3321     }
3322
3323     probe_arm_arch() {
3324         if   check_arm_arch 4;        then echo armv4;
3325         elif check_arm_arch 4T;       then echo armv4t;
3326         elif check_arm_arch 5;        then echo armv5;
3327         elif check_arm_arch 5E;       then echo armv5e;
3328         elif check_arm_arch 5T;       then echo armv5t;
3329         elif check_arm_arch 5TE;      then echo armv5te;
3330         elif check_arm_arch 5TEJ;     then echo armv5te;
3331         elif check_arm_arch 6;        then echo armv6;
3332         elif check_arm_arch 6J;       then echo armv6j;
3333         elif check_arm_arch 6K;       then echo armv6k;
3334         elif check_arm_arch 6Z;       then echo armv6z;
3335         elif check_arm_arch 6ZK;      then echo armv6zk;
3336         elif check_arm_arch 6T2;      then echo armv6t2;
3337         elif check_arm_arch 7;        then echo armv7;
3338         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3339         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3340         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3341         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3342         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3343         fi
3344     }
3345
3346     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3347
3348     case $cpu in
3349         armv*)
3350             cpuflags="-march=$cpu"
3351             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3352         ;;
3353         *)
3354             cpuflags="-mcpu=$cpu"
3355             case $cpu in
3356                 cortex-a*)                               subarch=armv7a  ;;
3357                 cortex-r*)                               subarch=armv7r  ;;
3358                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3359                 arm11*)                                  subarch=armv6   ;;
3360                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3361                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3362                 *)                             subarch=$(probe_arm_arch) ;;
3363             esac
3364         ;;
3365     esac
3366
3367     case "$subarch" in
3368         armv5t*)    enable fast_clz                ;;
3369         armv[6-8]*) enable fast_clz fast_unaligned ;;
3370     esac
3371
3372 elif enabled avr32; then
3373
3374     case $cpu in
3375         ap7[02]0[0-2])
3376             subarch="avr32_ap"
3377             cpuflags="-mpart=$cpu"
3378         ;;
3379         ap)
3380             subarch="avr32_ap"
3381             cpuflags="-march=$cpu"
3382         ;;
3383         uc3[ab]*)
3384             subarch="avr32_uc"
3385             cpuflags="-mcpu=$cpu"
3386         ;;
3387         uc)
3388             subarch="avr32_uc"
3389             cpuflags="-march=$cpu"
3390         ;;
3391     esac
3392
3393 elif enabled bfin; then
3394
3395     cpuflags="-mcpu=$cpu"
3396
3397 elif enabled mips; then
3398
3399     cpuflags="-march=$cpu"
3400
3401     case $cpu in
3402         24kc)
3403             disable mipsfpu
3404             disable mipsdspr1
3405             disable mipsdspr2
3406         ;;
3407         24kf*)
3408             disable mipsdspr1
3409             disable mipsdspr2
3410         ;;
3411         24kec|34kc|1004kc)
3412             disable mipsfpu
3413             disable mipsdspr2
3414         ;;
3415         24kef*|34kf*|1004kf*)
3416             disable mipsdspr2
3417         ;;
3418         74kc)
3419             disable mipsfpu
3420         ;;
3421     esac
3422
3423 elif enabled ppc; then
3424
3425     case $(tolower $cpu) in
3426         601|ppc601|powerpc601)
3427             cpuflags="-mcpu=601"
3428             disable altivec
3429         ;;
3430         603*|ppc603*|powerpc603*)
3431             cpuflags="-mcpu=603"
3432             disable altivec
3433         ;;
3434         604*|ppc604*|powerpc604*)
3435             cpuflags="-mcpu=604"
3436             disable altivec
3437         ;;
3438         g3|75*|ppc75*|powerpc75*)
3439             cpuflags="-mcpu=750"
3440             disable altivec
3441         ;;
3442         g4|745*|ppc745*|powerpc745*)
3443             cpuflags="-mcpu=7450"
3444         ;;
3445         74*|ppc74*|powerpc74*)
3446             cpuflags="-mcpu=7400"
3447         ;;
3448         g5|970|ppc970|powerpc970)
3449             cpuflags="-mcpu=970"
3450         ;;
3451         power[3-7]*)
3452             cpuflags="-mcpu=$cpu"
3453         ;;
3454         cell)
3455             cpuflags="-mcpu=cell"
3456             enable ldbrx
3457         ;;
3458         e500mc)
3459             cpuflags="-mcpu=e500mc"
3460             disable altivec
3461         ;;
3462         e500v2)
3463             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3464             disable altivec
3465         ;;
3466         e500)
3467             cpuflags="-mcpu=8540 -mhard-float"
3468             disable altivec
3469         ;;
3470     esac
3471
3472 elif enabled sparc; then
3473
3474     case $cpu in
3475         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3476             cpuflags="-mcpu=$cpu"
3477             disable vis
3478         ;;
3479         ultrasparc*|niagara[234])
3480             cpuflags="-mcpu=$cpu"
3481         ;;
3482     esac
3483
3484 elif enabled x86; then
3485
3486     case $cpu in
3487         i[345]86|pentium)
3488             cpuflags="-march=$cpu"
3489             disable mmx
3490         ;;
3491         # targets that do NOT support nopl and conditional mov (cmov)
3492         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3493             cpuflags="-march=$cpu"
3494             disable i686
3495         ;;
3496         # targets that do support nopl and conditional mov (cmov)
3497         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3498             cpuflags="-march=$cpu"
3499             enable i686
3500             enable fast_cmov
3501         ;;
3502         # targets that do support conditional mov but on which it's slow
3503         pentium4|pentium4m|prescott|nocona)
3504             cpuflags="-march=$cpu"
3505             enable i686
3506             disable fast_cmov
3507         ;;
3508     esac
3509
3510 fi
3511
3512 if [ "$cpu" != generic ]; then
3513     add_cflags  $cpuflags
3514     add_asflags $cpuflags
3515 fi
3516
3517 # compiler sanity check
3518 check_exec <<EOF
3519 int main(void){ return 0; }
3520 EOF
3521 if test "$?" != 0; then
3522     echo "$cc is unable to create an executable file."
3523     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3524         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3525         echo "Only do this if you know what cross compiling means."
3526     fi
3527     die "C compiler test failed."
3528 fi
3529
3530 add_cppflags -D_ISOC99_SOURCE
3531 add_cxxflags -D__STDC_CONSTANT_MACROS
3532 check_cflags -std=c99
3533 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3534 #include <stdlib.h>
3535 EOF
3536 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3537 #include <stdlib.h>
3538 EOF
3539
3540 check_host_cflags -std=c99
3541 check_host_cflags -Wall
3542
3543 check_64bit(){
3544     arch32=$1
3545     arch64=$2
3546     expr=$3
3547     check_code cc "" "int test[2*($expr) - 1]" &&
3548         subarch=$arch64 || subarch=$arch32
3549 }
3550
3551 case "$arch" in
3552     aarch64|alpha|ia64)
3553         spic=$shared
3554     ;;
3555     mips)
3556         check_64bit mips mips64 '_MIPS_SIM > 1'
3557         spic=$shared
3558     ;;
3559     parisc)
3560         check_64bit parisc parisc64 'sizeof(void *) > 4'
3561         spic=$shared
3562     ;;
3563     ppc)
3564         check_64bit ppc ppc64 'sizeof(void *) > 4'
3565         spic=$shared
3566     ;;
3567     sparc)
3568         check_64bit sparc sparc64 'sizeof(void *) > 4'
3569         spic=$shared
3570     ;;
3571     x86)
3572         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3573         if test "$subarch" = "x86_64"; then
3574             spic=$shared
3575         fi
3576     ;;
3577     ppc)
3578         check_cc <<EOF && subarch="ppc64"
3579         int test[(int)sizeof(char*) - 7];
3580 EOF
3581     ;;
3582 esac
3583
3584 enable $subarch
3585 enabled spic && enable_weak pic
3586
3587 # OS specific
3588 case $target_os in
3589     aix)
3590         SHFLAGS=-shared
3591         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3592         enabled shared && add_ldflags -Wl,-brtl
3593         ;;
3594     haiku)
3595         prefix_default="/boot/common"
3596         network_extralibs="-lnetwork"
3597         host_libs=
3598         ;;
3599     sunos)
3600         SHFLAGS='-shared -Wl,-h,$$(@F)'
3601         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3602         network_extralibs="-lsocket -lnsl"
3603         # When using suncc to build, the Solaris linker will mark
3604         # an executable with each instruction set encountered by
3605         # the Solaris assembler.  As our libraries contain their own
3606         # guards for processor-specific code, instead suppress
3607         # generation of the HWCAPS ELF section on Solaris x86 only.
3608         enabled_all suncc x86 &&
3609             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3610             add_ldflags -Wl,-M,mapfile
3611         nm_default='nm -P -g'
3612         ;;
3613     netbsd)
3614         disable symver
3615         oss_indev_extralibs="-lossaudio"
3616         oss_outdev_extralibs="-lossaudio"
3617         enabled gcc || check_ldflags -Wl,-zmuldefs
3618         ;;
3619     openbsd|bitrig)
3620         disable symver
3621         SHFLAGS='-shared'
3622         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3623         SLIB_INSTALL_LINKS=
3624         oss_indev_extralibs="-lossaudio"
3625         oss_outdev_extralibs="-lossaudio"
3626         ;;
3627     dragonfly)
3628         disable symver
3629         ;;
3630     freebsd)
3631         ;;
3632     bsd/os)
3633         add_extralibs -lpoll -lgnugetopt
3634         strip="strip -d"
3635         ;;
3636     darwin)
3637         gas="gas-preprocessor.pl $cc"
3638         enabled ppc && add_asflags -force_cpusubtype_ALL
3639         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3640         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3641         strip="${strip} -x"
3642         add_ldflags -Wl,-dynamic,-search_paths_first
3643         SLIBSUF=".dylib"
3644         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3645         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3646         objformat="macho"
3647         enabled x86_64 && objformat="macho64"
3648         enabled_any pic shared ||
3649             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3650         ;;
3651     mingw32*)
3652         if test $target_os = "mingw32ce"; then
3653             disable network
3654         else
3655             target_os=mingw32
3656         fi
3657         LIBTARGET=i386
3658         if enabled x86_64; then
3659             LIBTARGET="i386:x86-64"
3660         elif enabled arm; then
3661             LIBTARGET=arm-wince
3662         fi
3663         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3664         check_ldflags -Wl,--nxcompat
3665         check_ldflags -Wl,--dynamicbase
3666         shlibdir_default="$bindir_default"
3667         SLIBPREF=""
3668         SLIBSUF=".dll"
3669         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3670         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3671         dlltool="${cross_prefix}dlltool"
3672         if check_cmd lib.exe -list; then
3673             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3674             if enabled x86_64; then
3675                 LIBTARGET=x64
3676             fi
3677         elif check_cmd $dlltool --version; then
3678             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3679         fi
3680         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3681         SLIB_INSTALL_LINKS=
3682         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3683         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3684         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3685         objformat="win32"
3686         ranlib=:
3687         enable dos_paths
3688         ;;
3689     win32|win64)
3690         disable symver
3691         if enabled shared; then
3692             # Link to the import library instead of the normal static library
3693             # for shared libs.
3694             LD_LIB='%.lib'
3695             # Cannot build both shared and static libs with MSVC or icl.
3696             disable static
3697         fi
3698         shlibdir_default="$bindir_default"
3699         SLIBPREF=""
3700         SLIBSUF=".dll"
3701         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3702         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3703         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3704         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3705         SLIB_INSTALL_LINKS=
3706         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3707         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3708         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3709         objformat="win32"
3710         ranlib=:
3711         enable dos_paths
3712         ;;
3713     cygwin*)
3714         target_os=cygwin
3715         shlibdir_default="$bindir_default"
3716         SLIBPREF="cyg"
3717         SLIBSUF=".dll"
3718         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3719         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3720         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3721         SLIB_INSTALL_LINKS=
3722         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3723         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3724         objformat="win32"
3725         enable dos_paths
3726         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3727         ;;
3728     *-dos|freedos|opendos)
3729         network_extralibs="-lsocket"
3730         objformat="coff"
3731         enable dos_paths
3732         add_cppflags -U__STRICT_ANSI__
3733         ;;
3734     linux)
3735         enable dv1394
3736         ;;
3737     irix*)
3738         target_os=irix
3739         ranlib="echo ignoring ranlib"
3740         ;;
3741     os/2*)
3742         strip="lxlite -CS"
3743         ln_s="cp -f"
3744         objformat="aout"
3745         add_cppflags -D_GNU_SOURCE
3746         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3747         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3748         LIBSUF="_s.a"
3749         SLIBPREF=""
3750         SLIBSUF=".dll"
3751         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3752         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3753         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3754             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3755             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3756             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3757             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3758             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3759         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3760             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3761         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3762         enable dos_paths
3763         enable_weak os2threads
3764         ;;
3765     gnu/kfreebsd)
3766         add_cppflags -D_BSD_SOURCE
3767         ;;
3768     gnu)
3769         ;;
3770     qnx)
3771         add_cppflags -D_QNX_SOURCE
3772         network_extralibs="-lsocket"
3773         ;;
3774     symbian)
3775         SLIBSUF=".dll"
3776         enable dos_paths
3777         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3778         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3779         add_ldflags -Wl,--target1-abs,--no-undefined \
3780                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3781                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3782         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3783                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3784                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3785         ;;
3786     osf1)
3787         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3788         ;;
3789     minix)
3790         ;;
3791     plan9)
3792         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3793                      -D_REENTRANT_SOURCE        \
3794                      -D_RESEARCH_SOURCE         \
3795                      -DFD_SETSIZE=96            \
3796                      -DHAVE_SOCK_OPTS
3797         add_compat strtod.o strtod=avpriv_strtod
3798         network_extralibs='-lbsd'
3799         exeobjs=compat/plan9/main.o
3800         disable ffserver
3801         cp_f='cp'
3802         ;;
3803     none)
3804         ;;
3805     *)
3806         die "Unknown OS '$target_os'."
3807         ;;
3808 esac
3809
3810 # determine libc flavour
3811
3812 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3813 if check_cpp_condition features.h "defined __UCLIBC__"; then
3814     libc_type=uclibc
3815     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3816 elif check_cpp_condition features.h "defined __GLIBC__"; then
3817     libc_type=glibc
3818     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3819 # MinGW headers can be installed on Cygwin, so check for newlib first.
3820 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3821     libc_type=newlib
3822     add_cppflags -U__STRICT_ANSI__
3823 # MinGW64 is backwards compatible with MinGW32, so check for it first.
3824 elif check_cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3825     libc_type=mingw64
3826     if check_cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3827         add_compat msvcrt/snprintf.o
3828         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3829     else
3830         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3831     fi
3832     add_cppflags -U__STRICT_ANSI__
3833 elif check_cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3834     libc_type=mingw32
3835     check_cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3836         (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3837         die "ERROR: MinGW32 runtime version must be >= 3.15."
3838     add_cppflags -U__STRICT_ANSI__
3839 elif check_cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3840     libc_type=msvcrt
3841     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3842     # 0x601 by default unless something else is set by the user.
3843     # This can easily lead to us detecting functions only present
3844     # in such new versions and producing binaries requiring windows 7.0.
3845     # Therefore explicitly set the default to XP unless the user has
3846     # set something else on the command line.
3847     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3848 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3849     libc_type=klibc
3850 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3851     libc_type=bionic
3852 elif check_cpp_condition sys/brand.h "defined SOLARIS_BRAND_NAME"; then
3853     libc_type=solaris
3854     add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3855 fi
3856
3857 test -n "$libc_type" && enable libc_$libc_type
3858
3859 case $libc_type in
3860     bionic)
3861         add_compat strtod.o strtod=avpriv_strtod
3862         ;;
3863     msvcrt)
3864         add_compat strtod.o strtod=avpriv_strtod
3865         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3866                                      _snprintf=avpriv_snprintf  \
3867                                      vsnprintf=avpriv_vsnprintf
3868         ;;
3869 esac
3870
3871 # hacks for compiler/libc/os combinations
3872
3873 if enabled_all tms470 libc_glibc; then
3874     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3875     add_cppflags -D__USER_LABEL_PREFIX__=
3876     add_cppflags -D__builtin_memset=memset
3877     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3878     add_cflags   -pds=48    # incompatible redefinition of macro
3879 fi
3880
3881 if enabled_all ccc libc_glibc; then
3882     add_ldflags -Wl,-z,now  # calls to libots crash without this
3883 fi
3884
3885 esc(){
3886     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3887 }
3888
3889 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3890
3891 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3892
3893 set_default $PATHS_LIST
3894 set_default nm
3895
3896 # we need to build at least one lib type
3897 if ! enabled_any static shared; then
3898     cat <<EOF
3899 At least one library type must be built.
3900 Specify --enable-static to build the static libraries or --enable-shared to
3901 build the shared libraries as well. To only build the shared libraries specify
3902 --disable-static in addition to --enable-shared.
3903 EOF
3904     exit 1;
3905 fi
3906
3907 # backward compatibility layer for incompatible_libav/fork_abi
3908 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3909 enabled incompatible_libav_abi && enable incompatible_fork_abi
3910
3911 die_license_disabled() {
3912     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3913 }
3914
3915 die_license_disabled_gpl() {
3916     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3917 }
3918
3919 die_license_disabled gpl frei0r
3920 die_license_disabled gpl libcdio
3921 die_license_disabled gpl libutvideo
3922 die_license_disabled gpl libvidstab
3923 die_license_disabled gpl libx264
3924 die_license_disabled gpl libxavs
3925 die_license_disabled gpl libxvid
3926 die_license_disabled gpl libzvbi
3927 die_license_disabled gpl x11grab
3928
3929 die_license_disabled nonfree libaacplus
3930 die_license_disabled nonfree libfaac
3931 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3932 enabled gpl && die_license_disabled_gpl nonfree openssl
3933
3934 die_license_disabled version3 libopencore_amrnb
3935 die_license_disabled version3 libopencore_amrwb
3936 die_license_disabled version3 libvo_aacenc
3937 die_license_disabled version3 libvo_amrwbenc
3938
3939 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3940
3941 disabled optimizations || check_cflags -fomit-frame-pointer
3942
3943 enable_weak_pic() {
3944     disabled pic && return
3945     enable pic
3946     add_cppflags -DPIC
3947     case "$target_os" in
3948     mingw*|cygwin*)
3949         ;;
3950     *)
3951         add_cflags -fPIC
3952         ;;
3953     esac
3954     add_asflags  -fPIC
3955 }
3956
3957 enabled pic && enable_weak_pic
3958
3959 check_cc <<EOF || die "Symbol mangling check failed."
3960 int ff_extern;
3961 EOF
3962 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3963 extern_prefix=${sym%%ff_extern*}
3964
3965 check_cc <<EOF && enable_weak inline_asm
3966 void foo(void) { __asm__ volatile ("" ::); }
3967 EOF
3968
3969 _restrict=
3970 for restrict_keyword in restrict __restrict__ __restrict; do
3971     check_cc <<EOF && _restrict=$restrict_keyword && break
3972 void foo(char * $restrict_keyword p);
3973 EOF
3974 done
3975
3976 check_cc <<EOF && enable pragma_deprecated
3977 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3978 EOF
3979
3980 check_cc <<EOF && enable attribute_packed
3981 struct { int x; } __attribute__((packed)) x;
3982 EOF
3983
3984 check_cc <<EOF && enable attribute_may_alias
3985 union { int x; } __attribute__((may_alias)) x;
3986 EOF
3987
3988 check_cc <<EOF || die "endian test failed"
3989 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3990 EOF
3991 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3992
3993 check_inline_asm inline_asm_labels '"1:\n"'
3994
3995 if enabled alpha; then
3996
3997     check_cflags -mieee
3998
3999 elif enabled arm; then
4000
4001     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4002 float func(float a, float b){ return a+b; }
4003 EOF
4004
4005     enabled thumb && check_cflags -mthumb || check_cflags -marm
4006     nogas=die
4007
4008     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4009         enable vfp_args
4010     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4011         case "${cross_prefix:-$cc}" in
4012             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4013             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4014 __asm__ (".eabi_attribute 28, 1");
4015 int main(void) { return 0; }
4016 EOF
4017         esac
4018         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4019     fi
4020
4021     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4022     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4023     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4024     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4025     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4026     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4027
4028     [ $target_os = linux ] ||
4029         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4030             $ARCH_EXT_LIST_ARM
4031
4032     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4033     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
4034
4035     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4036
4037 elif enabled mips; then
4038
4039     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4040     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4041      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4042     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4043      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4044     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4045      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4046     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4047      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4048
4049 elif enabled parisc; then
4050
4051     if enabled gcc; then
4052         case $($cc -dumpversion) in
4053             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4054         esac
4055     fi
4056
4057 elif enabled ppc; then
4058
4059     enable local_aligned_8 local_aligned_16
4060
4061     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4062     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4063     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4064     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4065
4066     # AltiVec flags: The FSF version of GCC differs from the Apple version
4067     if enabled altivec; then
4068         if ! enabled_any pic ppc64; then
4069             nogas=warn
4070         fi
4071         check_cflags -maltivec -mabi=altivec &&
4072         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4073         check_cflags -faltivec
4074
4075         # check if our compiler supports Motorola AltiVec C API
4076         check_cc <<EOF || disable altivec
4077 $inc_altivec_h
4078 int main(void) {
4079     vector signed int v1 = (vector signed int) { 0 };
4080     vector signed int v2 = (vector signed int) { 1 };
4081     v1 = vec_add(v1, v2);
4082     return 0;
4083 }
4084 EOF
4085
4086         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4087     fi
4088
4089 elif enabled sparc; then
4090
4091     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4092
4093 elif enabled x86; then
4094
4095     check_builtin rdtsc    intrin.h   "__rdtsc()"
4096     check_builtin mm_empty mmintrin.h "_mm_empty()"
4097
4098     enable local_aligned_8 local_aligned_16
4099
4100     # check whether EBP is available on x86
4101     # As 'i' is stored on the stack, this program will crash
4102     # if the base pointer is used to access it because the
4103     # base pointer is cleared in the inline assembly code.
4104     check_exec_crash <<EOF && enable ebp_available
4105 volatile int i=0;
4106 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4107 return i;
4108 EOF
4109
4110     # check whether EBX is available on x86
4111     check_inline_asm ebx_available '""::"b"(0)' &&
4112         check_inline_asm ebx_available '"":::"%ebx"'
4113
4114     # check whether xmm clobbers are supported
4115     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4116
4117     # check whether binutils is new enough to compile SSSE3/MMXEXT
4118     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4119     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4120
4121     if ! disabled_any asm mmx yasm; then
4122         if check_cmd $yasmexe --version; then
4123             enabled x86_64 && yasm_extra="-m amd64"
4124             yasm_debug="-g dwarf2"
4125         elif check_cmd nasm -v; then
4126             yasmexe=nasm
4127             yasm_debug="-g -F dwarf"
4128             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4129         fi
4130
4131         YASMFLAGS="-f $objformat $yasm_extra"
4132         enabled pic               && append YASMFLAGS "-DPIC"
4133         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4134         case "$objformat" in
4135             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4136         esac
4137
4138         check_yasm "movbe ecx, [5]" && enable yasm ||
4139             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4140         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4141         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4142         check_yasm "CPU amdnop" && enable cpunop
4143     fi
4144
4145     case "$cpu" in
4146         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4147             disable fast_clz
4148         ;;
4149     esac
4150
4151 fi
4152
4153 if enabled asm; then
4154     as=${gas:=$as}
4155     check_as <<EOF && enable gnu_as || \
4156         $nogas "GNU assembler not found, install gas-preprocessor"
4157 .macro m n
4158 \n: .int 0
4159 .endm
4160 m x
4161 EOF
4162 fi
4163
4164 check_ldflags -Wl,--as-needed
4165
4166 if check_func dlopen; then
4167     ldl=
4168 elif check_func dlopen -ldl; then
4169     ldl=-ldl
4170 fi
4171
4172 if ! disabled network; then
4173     check_type "sys/types.h sys/socket.h" socklen_t
4174     check_type netdb.h "struct addrinfo"
4175     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4176     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4177     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4178     check_type netinet/in.h "struct sockaddr_in6"
4179     check_type poll.h "struct pollfd"
4180     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4181     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4182     check_type netinet/sctp.h "struct sctp_event_subscribe"
4183     check_func getaddrinfo $network_extralibs
4184     check_func getservbyport $network_extralibs
4185     # Prefer arpa/inet.h over winsock2
4186     if check_header arpa/inet.h ; then
4187         check_func closesocket
4188     elif check_header winsock2.h ; then
4189         check_func_headers winsock2.h closesocket -lws2 &&
4190             network_extralibs="-lws2" ||
4191         { check_func_headers winsock2.h closesocket -lws2_32 &&
4192             network_extralibs="-lws2_32"; }
4193         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4194         check_type ws2tcpip.h socklen_t
4195         check_type ws2tcpip.h "struct addrinfo"
4196         check_type ws2tcpip.h "struct group_source_req"
4197         check_type ws2tcpip.h "struct ip_mreq_source"
4198         check_type ws2tcpip.h "struct ipv6_mreq"
4199         check_type winsock2.h "struct pollfd"
4200         check_type ws2tcpip.h "struct sockaddr_in6"
4201         check_type ws2tcpip.h "struct sockaddr_storage"
4202         check_struct winsock2.h "struct sockaddr" sa_len
4203     else
4204         disable network
4205     fi
4206 fi
4207
4208 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4209 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4210
4211 check_func  access
4212 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4213 check_func  fcntl
4214 check_func  fork
4215 check_func_headers stdlib.h getenv
4216 check_func  gethrtime
4217 check_func  getopt
4218 check_func  getrusage
4219 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4220 check_func  gettimeofday
4221 check_func  inet_aton $network_extralibs
4222 check_func  isatty
4223 check_func  localtime_r
4224 check_func  ${malloc_prefix}memalign            && enable memalign
4225 check_func  mkstemp
4226 check_func  mmap
4227 check_func  mprotect
4228 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4229 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4230 check_func  setrlimit
4231 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4232 check_func  strerror_r
4233 check_func  sched_getaffinity
4234 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4235 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4236 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4237 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4238 check_builtin sarestart signal.h "SA_RESTART"
4239 check_func  sysconf
4240 check_func  sysctl
4241 check_func  usleep
4242 check_func_headers conio.h kbhit
4243 check_func_headers windows.h PeekNamedPipe
4244 check_func_headers io.h setmode
4245 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4246 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4247 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4248 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4249 check_func_headers windows.h GetProcessAffinityMask
4250 check_func_headers windows.h GetProcessTimes
4251 check_func_headers windows.h GetSystemTimeAsFileTime
4252 check_func_headers windows.h MapViewOfFile
4253 check_func_headers windows.h SetConsoleTextAttribute
4254 check_func_headers windows.h Sleep
4255 check_func_headers windows.h VirtualAlloc
4256 check_func_headers glob.h glob
4257 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4258
4259 check_header cl/cl.h
4260 check_header direct.h
4261 check_header dlfcn.h
4262 check_header dxva.h
4263 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4264 check_header io.h
4265 check_header libcrystalhd/libcrystalhd_if.h
4266 check_header malloc.h
4267 check_header poll.h
4268 check_header sys/mman.h
4269 check_header sys/param.h
4270 check_header sys/resource.h
4271 check_header sys/select.h
4272 check_header sys/time.h
4273 check_header sys/un.h
4274 check_header termios.h
4275 check_header unistd.h
4276 check_header vdpau/vdpau.h
4277 check_header vdpau/vdpau_x11.h
4278 check_header VideoDecodeAcceleration/VDADecoder.h
4279 check_header windows.h
4280 check_header X11/extensions/XvMClib.h
4281 check_header asm/types.h
4282
4283 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4284 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4285
4286 if ! disabled w32threads && ! enabled pthreads; then
4287     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4288 fi
4289
4290 # check for some common methods of building with pthread support
4291 # do this before the optional library checks as some of them require pthreads
4292 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4293     enable pthreads
4294     if check_func pthread_join && check_func pthread_create; then
4295         :
4296     elif check_func pthread_join -pthread && check_func pthread_create -pthread; then
4297         add_cflags -pthread
4298         add_extralibs -pthread
4299     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4300         add_cflags -pthreads
4301         add_extralibs -pthreads
4302     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4303         add_extralibs -lpthreadGC2
4304     elif ! check_lib pthread.h pthread_join -lpthread && ! check_lib pthread.h pthread_create -lpthread; then
4305         disable pthreads
4306     fi
4307 fi
4308
4309 for thread in $THREADS_LIST; do
4310     if enabled $thread; then
4311         test -n "$thread_type" &&
4312             die "ERROR: Only one thread type must be selected." ||
4313             thread_type="$thread"
4314     fi
4315 done
4316
4317 if enabled pthreads; then
4318   check_func pthread_cancel
4319 fi
4320
4321 enabled sync_val_compare_and_swap && enable atomics_gcc
4322 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4323 enabled MemoryBarrier && enable atomics_win32
4324
4325 check_lib math.h sin -lm && LIBM="-lm"
4326 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4327
4328 atan2f_args=2
4329 ldexpf_args=2
4330 powf_args=2
4331
4332 for func in $MATH_FUNCS; do
4333     eval check_mathfunc $func \${${func}_args:-1}
4334 done
4335
4336 # these are off by default, so fail if requested and not available
4337 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4338                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4339                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4340 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4341 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4342 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4343 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4344 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4345 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4346 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4347 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4348 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4349                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4350                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4351 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4352 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4353 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4354 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"
4355 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4356 enabled libfreetype       && require_libfreetype
4357 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4358 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4359                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4360                                done || die "ERROR: libgsm not found"; }
4361 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4362 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4363 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4364 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4365 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4366 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4367 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4368 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4369                                check_lib openjpeg.h opj_version -lopenjpeg ||
4370                                die "ERROR: libopenjpeg not found"; }
4371 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4372 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4373 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4374 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4375 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4376 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4377 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4378 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4379 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4380 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4381     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4382     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4383 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4384 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4385                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4386                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4387 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4388 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4389 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4390 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4391 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4392 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4393 enabled libvpx            && {
4394     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4395                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4396     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 ||
4397                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4398     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4399     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4400 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4401 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4402                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4403                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4404 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4405 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4406 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4407 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4408 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4409                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4410                                die "ERROR: openal not found"; } &&
4411                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4412                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4413 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4414                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4415                                die "ERROR: opencl not found"; } &&
4416                              { ! enabled_any w32threads os2threads ||
4417                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4418                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4419                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4420                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4421 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4422                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4423                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4424                                die "ERROR: openssl not found"; }
4425
4426 if enabled gnutls; then
4427     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4428     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4429 fi
4430
4431 # libdc1394 check
4432 if enabled libdc1394; then
4433     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4434         enable libdc1394_2; } ||
4435     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4436         enable libdc1394_1; } ||
4437     die "ERROR: No version of libdc1394 found "
4438 fi
4439
4440 SDL_CONFIG="${cross_prefix}sdl-config"
4441 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4442     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4443     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4444     enable sdl
4445 else
4446   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4447     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4448     sdl_libs=$("${SDL_CONFIG}" --libs)
4449     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4450     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4451     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4452     enable sdl
4453   fi
4454 fi
4455 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4456
4457 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4458 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4459 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4460 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4461 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4462
4463 check_header linux/fb.h
4464 check_header linux/videodev.h
4465 check_header linux/videodev2.h
4466 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4467
4468 check_header sys/videoio.h
4469
4470 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4471 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4472 # w32api 3.12 had it defined wrong
4473 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4474
4475 check_type "dshow.h" IBaseFilter
4476
4477 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4478 { check_header dev/bktr/ioctl_meteor.h &&
4479   check_header dev/bktr/ioctl_bt848.h; } ||
4480 { check_header machine/ioctl_meteor.h &&
4481   check_header machine/ioctl_bt848.h; } ||
4482 { check_header dev/video/meteor/ioctl_meteor.h &&
4483   check_header dev/video/bktr/ioctl_bt848.h; } ||
4484 check_header dev/ic/bt8xx.h
4485
4486 check_header sndio.h
4487 if check_struct sys/soundcard.h audio_buf_info bytes; then
4488     enable_safe sys/soundcard.h
4489 else
4490     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4491     #include <sys/soundcard.h>
4492     audio_buf_info abc;
4493 EOF
4494 fi
4495 check_header soundcard.h
4496
4497 enabled_any alsa_indev alsa_outdev &&
4498     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4499
4500 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4501     check_func jack_port_get_latency_range -ljack
4502
4503 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4504
4505 if enabled libcdio; then
4506     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4507     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4508     die "ERROR: libcdio-paranoia not found"
4509 fi
4510
4511 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4512
4513 enabled x11grab                                           &&
4514 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4515 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4516 { enabled xlib || die "ERROR: Xlib not found"; }
4517
4518 enabled vaapi &&
4519     check_lib va/va.h vaInitialize -lva ||
4520     disable vaapi
4521
4522 enabled vdpau &&
4523     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4524     disable vdpau
4525
4526 enabled vdpau && enabled xlib &&
4527     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4528     enable vdpau_x11
4529
4530 # Funny iconv installations are not unusual, so check it after all flags have been set
4531 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4532
4533 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4534
4535 # add some useful compiler flags if supported
4536 check_cflags -Wdeclaration-after-statement
4537 check_cflags -Wall
4538 check_cflags -Wdisabled-optimization
4539 check_cflags -Wpointer-arith
4540 check_cflags -Wredundant-decls
4541 check_cflags -Wwrite-strings
4542 check_cflags -Wtype-limits
4543 check_cflags -Wundef
4544 check_cflags -Wmissing-prototypes
4545 check_cflags -Wno-pointer-to-int-cast
4546 check_cflags -Wstrict-prototypes
4547 enabled extra_warnings && check_cflags -Winline
4548
4549 check_disable_warning(){
4550     warning_flag=-W${1#-Wno-}
4551     test_cflags $warning_flag && add_cflags $1
4552 }
4553
4554 check_disable_warning -Wno-parentheses
4555 check_disable_warning -Wno-switch
4556 check_disable_warning -Wno-format-zero-length
4557 check_disable_warning -Wno-pointer-sign
4558
4559 # add some linker flags
4560 check_ldflags -Wl,--warn-common
4561 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4562 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4563 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4564
4565 # add some strip flags
4566 # -wN '..@*' is more selective than -x, but not available everywhere.
4567 check_stripflags -wN \'..@*\' || check_stripflags -x
4568
4569 enabled xmm_clobber_test &&
4570     check_ldflags -Wl,--wrap,avcodec_open2              \
4571                   -Wl,--wrap,avcodec_decode_audio4      \
4572                   -Wl,--wrap,avcodec_decode_video2      \
4573                   -Wl,--wrap,avcodec_decode_subtitle2   \
4574                   -Wl,--wrap,avcodec_encode_audio2      \
4575                   -Wl,--wrap,avcodec_encode_video       \
4576                   -Wl,--wrap,avcodec_encode_video2      \
4577                   -Wl,--wrap,avcodec_encode_subtitle    \
4578                   -Wl,--wrap,sws_scale ||
4579     disable xmm_clobber_test
4580
4581 echo "X{};" > $TMPV
4582 if test_ldflags -Wl,--version-script,$TMPV; then
4583     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4584     check_cc <<EOF && enable symver_asm_label
4585 void ff_foo(void) __asm__ ("av_foo@VERSION");
4586 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4587 EOF
4588     check_cc <<EOF && enable symver_gnu_asm
4589 __asm__(".symver ff_foo,av_foo@VERSION");
4590 void ff_foo(void) {}
4591 EOF
4592 fi
4593
4594 if [ -z "$optflags" ]; then
4595     if enabled small; then
4596         optflags=$cflags_size
4597     elif enabled optimizations; then
4598         optflags=$cflags_speed
4599     else
4600         optflags=$cflags_noopt
4601     fi
4602 fi
4603
4604 check_optflags(){
4605     check_cflags "$@"
4606     enabled lto && check_ldflags "$@"
4607 }
4608
4609
4610 if enabled lto; then
4611     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4612     check_cflags  -flto
4613     check_ldflags -flto $cpuflags
4614 fi
4615
4616 check_optflags $optflags
4617 check_optflags -fno-math-errno
4618 check_optflags -fno-signed-zeros
4619
4620 enabled ftrapv && check_cflags -ftrapv
4621
4622 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4623 int x;
4624 EOF
4625
4626
4627 if enabled icc; then
4628     # Just warnings, no remarks
4629     check_cflags -w1
4630     # -wd: Disable following warnings
4631     # 144, 167, 556: -Wno-pointer-sign
4632     # 188: enumerated type mixed with another type
4633     # 1292: attribute "foo" ignored
4634     # 1419: external declaration in primary source file
4635     # 10006: ignoring unknown option -fno-signed-zeros
4636     # 10148: ignoring unknown option -Wno-parentheses
4637     # 10156: ignoring option '-W'; no argument required
4638     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4639     # 11030: Warning unknown option --as-needed
4640     # 10156: ignoring option '-export'; no argument required
4641     check_ldflags -wd10156,11030
4642     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4643     enable ebp_available
4644     if enabled x86_32; then
4645         icc_version=$($cc -dumpversion)
4646         test ${icc_version%%.*} -ge 11 &&
4647             check_cflags -falign-stack=maintain-16-byte ||
4648             disable aligned_stack
4649     fi
4650 elif enabled ccc; then
4651     # disable some annoying warnings
4652     add_cflags -msg_disable bitnotint
4653     add_cflags -msg_disable mixfuncvoid
4654     add_cflags -msg_disable nonstandcast
4655     add_cflags -msg_disable unsupieee
4656 elif enabled gcc; then
4657     check_optflags -fno-tree-vectorize
4658     check_cflags -Werror=implicit-function-declaration
4659     check_cflags -Werror=missing-prototypes
4660     check_cflags -Werror=return-type
4661     check_cflags -Werror=vla
4662     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4663 elif enabled llvm_gcc; then
4664     check_cflags -mllvm -stack-alignment=16
4665 elif enabled clang; then
4666     check_cflags -mllvm -stack-alignment=16
4667     check_cflags -Qunused-arguments
4668     check_cflags -Werror=implicit-function-declaration
4669     check_cflags -Werror=missing-prototypes
4670     check_cflags -Werror=return-type
4671 elif enabled cparser; then
4672     add_cflags -Wno-missing-variable-declarations
4673     add_cflags -Wno-empty-statement
4674 elif enabled armcc; then
4675     # 2523: use of inline assembler is deprecated
4676     add_cflags -W${armcc_opt},--diag_suppress=2523
4677     add_cflags -W${armcc_opt},--diag_suppress=1207
4678     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4679     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4680     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4681     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4682 elif enabled tms470; then
4683     add_cflags -pds=824 -pds=837
4684 elif enabled pathscale; then
4685     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4686 elif enabled_any msvc icl; then
4687     enabled x86_32 && disable aligned_stack
4688     enabled_all x86_32 debug && add_cflags -Oy-
4689     enabled debug && add_ldflags -debug
4690     enable pragma_deprecated
4691     if enabled icl; then
4692         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4693         # (correctly) on icl 13.x.
4694         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4695             add_cflags -Qansi-alias
4696         # icl will pass the inline asm tests but inline asm is currently
4697         # not supported (build will fail)
4698         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4699         disable inline_asm
4700     fi
4701 fi
4702
4703 case $target_os in
4704     osf1)
4705         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4706     ;;
4707     plan9)
4708         add_cppflags -Dmain=plan9_main
4709     ;;
4710 esac
4711
4712 enable frame_thread_encoder
4713 enabled_any $THREADS_LIST      && enable threads
4714 enabled_any $ATOMICS_LIST      && enable atomics_native
4715
4716 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4717
4718 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4719
4720 check_deps $CONFIG_LIST       \
4721            $CONFIG_EXTRA      \
4722            $HAVE_LIST         \
4723            $ALL_COMPONENTS    \
4724
4725
4726 if test $target_os = "haiku"; then
4727     disable memalign
4728     disable posix_memalign
4729 fi
4730
4731 ! enabled_any memalign posix_memalign aligned_malloc &&
4732     enabled_any $need_memalign && enable memalign_hack
4733
4734 # add_dep lib dep
4735 # -> enable ${lib}_deps_${dep}
4736 # -> add $dep to ${lib}_deps only once
4737 add_dep() {
4738     lib=$1
4739     dep=$2
4740     enabled "${lib}_deps_${dep}" && return 0
4741     enable  "${lib}_deps_${dep}"
4742     prepend "${lib}_deps" $dep
4743 }
4744
4745 # merge deps lib components
4746 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4747 merge_deps() {
4748     lib=$1
4749     shift
4750     for comp in $*; do
4751         enabled $comp || continue
4752         eval "dep=\"\$${comp}_deps\""
4753         for d in $dep; do
4754             add_dep $lib $d
4755         done
4756     done
4757 }
4758
4759 merge_deps libavfilter $FILTER_LIST
4760
4761 echo "install prefix            $prefix"
4762 echo "source path               $source_path"
4763 echo "C compiler                $cc"
4764 if test "$host_cc" != "$cc"; then
4765     echo "host C compiler           $host_cc"
4766 fi
4767 echo "C library                 $libc_type"
4768 echo "ARCH                      $arch ($cpu)"
4769 if test "$build_suffix" != ""; then
4770     echo "build suffix              $build_suffix"
4771 fi
4772 if test "$progs_suffix" != ""; then
4773     echo "progs suffix              $progs_suffix"
4774 fi
4775 if test "$extra_version" != ""; then
4776     echo "version string suffix     $extra_version"
4777 fi
4778 echo "big-endian                ${bigendian-no}"
4779 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4780 if enabled x86; then
4781     echo "${yasmexe}                      ${yasm-no}"
4782     echo "MMX enabled               ${mmx-no}"
4783     echo "MMXEXT enabled            ${mmxext-no}"
4784     echo "3DNow! enabled            ${amd3dnow-no}"
4785     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4786     echo "SSE enabled               ${sse-no}"
4787     echo "SSSE3 enabled             ${ssse3-no}"
4788     echo "AVX enabled               ${avx-no}"
4789     echo "FMA4 enabled              ${fma4-no}"
4790     echo "i686 features enabled     ${i686-no}"
4791     echo "CMOV is fast              ${fast_cmov-no}"
4792     echo "EBX available             ${ebx_available-no}"
4793     echo "EBP available             ${ebp_available-no}"
4794 fi
4795 if enabled arm; then
4796     echo "ARMv5TE enabled           ${armv5te-no}"
4797     echo "ARMv6 enabled             ${armv6-no}"
4798     echo "ARMv6T2 enabled           ${armv6t2-no}"
4799     echo "VFP enabled               ${vfp-no}"
4800     echo "NEON enabled              ${neon-no}"
4801     echo "THUMB enabled             ${thumb-no}"
4802 fi
4803 if enabled mips; then
4804     echo "MIPS FPU enabled          ${mipsfpu-no}"
4805     echo "MIPS32R2 enabled          ${mips32r2-no}"