examples: add remuxing example
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --enable-vda             enable VDA code
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libxavs         enable AVS encoding via xavs [no]
248   --enable-libxvid         enable Xvid encoding via xvidcore,
249                            native MPEG-4/Xvid encoder exists [no]
250   --enable-libzmq          enable message passing via libzmq [no]
251   --enable-libzvbi         enable teletext support via libzvbi [no]
252   --enable-openal          enable OpenAL 1.1 capture support [no]
253   --enable-opencl          enable OpenCL code
254   --enable-openssl         enable openssl [no]
255   --enable-x11grab         enable X11 grabbing [no]
256   --disable-zlib           disable zlib [autodetect]
257
258 Advanced options (experts only):
259   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
260   --enable-cross-compile   assume a cross-compiler is used
261   --sysroot=PATH           root of cross-build tree
262   --sysinclude=PATH        location of cross-build system headers
263   --target-os=OS           compiler targets OS [$target_os]
264   --target-exec=CMD        command to run executables on target
265   --target-path=DIR        path to view of build directory on target
266   --target-samples=DIR     path to samples directory on target
267   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
268   --toolchain=NAME         set tool defaults according to NAME
269   --nm=NM                  use nm tool NM [$nm_default]
270   --ar=AR                  use archive tool AR [$ar_default]
271   --as=AS                  use assembler AS [$as_default]
272   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
273   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
274   --cc=CC                  use C compiler CC [$cc_default]
275   --cxx=CXX                use C compiler CXX [$cxx_default]
276   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
277   --ld=LD                  use linker LD [$ld_default]
278   --host-cc=HOSTCC         use host C compiler HOSTCC
279   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
280   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
281   --host-ld=HOSTLD         use host linker HOSTLD
282   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
283   --host-libs=HLIBS        use libs HLIBS when linking for host
284   --host-os=OS             compiler host OS [$target_os]
285   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
286   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
287   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --build-suffix=SUFFIX    library name suffix []
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --progs-suffix=SUFFIX    program name suffix []
294   --arch=ARCH              select architecture [$arch]
295   --cpu=CPU                select the minimum required CPU (affects
296                            instruction selection, may crash on older CPUs)
297   --enable-pic             build position-independent code
298   --enable-sram            allow use of on-chip SRAM
299   --enable-thumb           compile for Thumb instruction set
300   --disable-symver         disable symbol versioning
301   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
302   --disable-safe-bitstream-reader
303                            disable buffer boundary checking in bitreaders
304                            (faster, but may crash)
305   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
306   --enable-lto             use link-time optimization
307
308 Optimization options (experts only):
309   --disable-asm            disable all assembler optimizations
310   --disable-altivec        disable AltiVec optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-vis            disable VIS optimizations
330   --disable-inline-asm     disable use of inline assembler
331   --disable-yasm           disable use of yasm assembler
332   --disable-mips32r2       disable MIPS32R2 optimizations
333   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
334   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
335   --disable-mipsfpu        disable floating point MIPS optimizations
336   --disable-fast-unaligned consider unaligned accesses slow
337
338 Developer options (useful when working on FFmpeg itself):
339   --disable-debug          disable debugging symbols
340   --enable-debug=LEVEL     set the debug level [$debuglevel]
341   --disable-optimizations  disable compiler optimizations
342   --enable-extra-warnings  enable more compiler warnings
343   --disable-stripping      disable stripping of executables and shared libraries
344   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
345                            2 causes a slowdown at runtime.
346   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
347   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
348                            leaks and errors, using the specified valgrind binary.
349                            Cannot be combined with --target-exec
350   --enable-ftrapv          Trap arithmetic overflows
351   --samples=PATH           location of test samples for FATE, if not set use
352                            \$FATE_SAMPLES at make invocation time.
353   --enable-neon-clobber-test check NEON registers for clobbering (should be
354                            used only for debugging purposes)
355   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
356                            should be used only for debugging purposes)
357   --enable-random          randomly enable/disable components
358   --disable-random
359   --enable-random=LIST     randomly enable/disable specific components or
360   --disable-random=LIST    component groups. LIST is a comma-separated list
361                            of NAME[:PROB] entries where NAME is a component
362                            (group) and PROB the probability associated with
363                            NAME (default 0.5).
364   --random-seed=VALUE      seed value for --enable/disable-random
365
366 NOTE: Object files are built at the place where configure is launched.
367 EOF
368   exit 0
369 }
370
371 quotes='""'
372
373 log(){
374     echo "$@" >> $logfile
375 }
376
377 log_file(){
378     log BEGIN $1
379     pr -n -t $1 >> $logfile
380     log END $1
381 }
382
383 echolog(){
384     log "$@"
385     echo "$@"
386 }
387
388 warn(){
389     log "WARNING: $*"
390     WARNINGS="${WARNINGS}WARNING: $*\n"
391 }
392
393 die(){
394     echolog "$@"
395     cat <<EOF
396
397 If you think configure made a mistake, make sure you are using the latest
398 version from Git.  If the latest version fails, report the problem to the
399 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
400 EOF
401     if disabled logging; then
402         cat <<EOF
403 Rerun configure with logging enabled (do not use --disable-logging), and
404 include the log this produces with your report.
405 EOF
406     else
407         cat <<EOF
408 Include the log file "$logfile" produced by configure as this will help
409 solving the problem.
410 EOF
411     fi
412     exit 1
413 }
414
415 # Avoid locale weirdness, besides we really just want to translate ASCII.
416 toupper(){
417     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
418 }
419
420 tolower(){
421     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
422 }
423
424 c_escape(){
425     echo "$*" | sed 's/["\\]/\\\0/g'
426 }
427
428 sh_quote(){
429     v=$(echo "$1" | sed "s/'/'\\\\''/g")
430     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
431     echo "$v"
432 }
433
434 cleanws(){
435     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
436 }
437
438 filter(){
439     pat=$1
440     shift
441     for v; do
442         eval "case $v in $pat) echo $v ;; esac"
443     done
444 }
445
446 filter_out(){
447     pat=$1
448     shift
449     for v; do
450         eval "case $v in $pat) ;; *) echo $v ;; esac"
451     done
452 }
453
454 map(){
455     m=$1
456     shift
457     for v; do eval $m; done
458 }
459
460 add_suffix(){
461     suffix=$1
462     shift
463     for v; do echo ${v}${suffix}; done
464 }
465
466 set_all(){
467     value=$1
468     shift
469     for var in $*; do
470         eval $var=$value
471     done
472 }
473
474 set_weak(){
475     value=$1
476     shift
477     for var; do
478         eval : \${$var:=$value}
479     done
480 }
481
482 sanitize_var_name(){
483     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
484 }
485
486 set_safe(){
487     var=$1
488     shift
489     eval $(sanitize_var_name "$var")='$*'
490 }
491
492 get_safe(){
493     eval echo \$$(sanitize_var_name "$1")
494 }
495
496 pushvar(){
497     for pvar in $*; do
498         eval level=\${${pvar}_level:=0}
499         eval ${pvar}_${level}="\$$pvar"
500         eval ${pvar}_level=$(($level+1))
501     done
502 }
503
504 popvar(){
505     for pvar in $*; do
506         eval level=\${${pvar}_level:-0}
507         test $level = 0 && continue
508         eval level=$(($level-1))
509         eval $pvar="\${${pvar}_${level}}"
510         eval ${pvar}_level=$level
511         eval unset ${pvar}_${level}
512     done
513 }
514
515 enable(){
516     set_all yes $*
517 }
518
519 disable(){
520     set_all no $*
521 }
522
523 enable_weak(){
524     set_weak yes $*
525 }
526
527 disable_weak(){
528     set_weak no $*
529 }
530
531 enable_safe(){
532     for var; do
533         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 disable_safe(){
538     for var; do
539         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
540     done
541 }
542
543 do_enable_deep(){
544     for var; do
545         enabled $var && continue
546         eval sel="\$${var}_select"
547         eval sgs="\$${var}_suggest"
548         pushvar var sgs
549         enable_deep $sel
550         popvar sgs
551         enable_deep_weak $sgs
552         popvar var
553     done
554 }
555
556 enable_deep(){
557     do_enable_deep $*
558     enable $*
559 }
560
561 enable_deep_weak(){
562     for var; do
563         disabled $var && continue
564         pushvar var
565         do_enable_deep $var
566         popvar var
567         enable_weak $var
568     done
569 }
570
571 enabled(){
572     test "${1#!}" = "$1" && op== || op=!=
573     eval test "x\$${1#!}" $op "xyes"
574 }
575
576 disabled(){
577     test "${1#!}" = "$1" && op== || op=!=
578     eval test "x\$${1#!}" $op "xno"
579 }
580
581 enabled_all(){
582     for opt; do
583         enabled $opt || return 1
584     done
585 }
586
587 disabled_all(){
588     for opt; do
589         disabled $opt || return 1
590     done
591 }
592
593 enabled_any(){
594     for opt; do
595         enabled $opt && return 0
596     done
597 }
598
599 disabled_any(){
600     for opt; do
601         disabled $opt && return 0
602     done
603     return 1
604 }
605
606 set_default(){
607     for opt; do
608         eval : \${$opt:=\$${opt}_default}
609     done
610 }
611
612 is_in(){
613     value=$1
614     shift
615     for var in $*; do
616         [ $var = $value ] && return 0
617     done
618     return 1
619 }
620
621 do_check_deps(){
622     for cfg; do
623         cfg="${cfg#!}"
624         enabled ${cfg}_checking && die "Circular dependency for $cfg."
625         disabled ${cfg}_checking && continue
626         enable ${cfg}_checking
627         append allopts $cfg
628
629         eval dep_all="\$${cfg}_deps"
630         eval dep_any="\$${cfg}_deps_any"
631         eval dep_sel="\$${cfg}_select"
632         eval dep_sgs="\$${cfg}_suggest"
633         eval dep_ifa="\$${cfg}_if"
634         eval dep_ifn="\$${cfg}_if_any"
635
636         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
637         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
638         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
639
640         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
641         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
642         enabled_all  $dep_all || disable $cfg
643         enabled_any  $dep_any || disable $cfg
644         disabled_any $dep_sel && disable $cfg
645
646         if enabled $cfg; then
647             enable_deep $dep_sel
648             enable_deep_weak $dep_sgs
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 check_deps(){
656     unset allopts
657
658     do_check_deps "$@"
659
660     for cfg in $allopts; do
661         enabled $cfg || continue
662         eval dep_extralibs="\$${cfg}_extralibs"
663         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
664     done
665 }
666
667 print_config(){
668     pfx=$1
669     files=$2
670     shift 2
671     map 'eval echo "$v \${$v:-no}"' "$@" |
672     awk "BEGIN { split(\"$files\", files) }
673         {
674             c = \"$pfx\" toupper(\$1);
675             v = \$2;
676             sub(/yes/, 1, v);
677             sub(/no/,  0, v);
678             for (f in files) {
679                 file = files[f];
680                 if (file ~ /\\.h\$/) {
681                     printf(\"#define %s %d\\n\", c, v) >>file;
682                 } else if (file ~ /\\.asm\$/) {
683                     printf(\"%%define %s %d\\n\", c, v) >>file;
684                 } else if (file ~ /\\.mak\$/) {
685                     n = -v ? \"\" : \"!\";
686                     printf(\"%s%s=yes\\n\", n, c) >>file;
687                 } else if (file ~ /\\.texi\$/) {
688                     pre = -v ? \"\" : \"@c \";
689                     yesno = \$2;
690                     c2 = tolower(c);
691                     gsub(/_/, \"-\", c2);
692                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
693                 }
694             }
695         }"
696 }
697
698 print_enabled(){
699     suf=$1
700     shift
701     for v; do
702         enabled $v && printf "%s\n" ${v%$suf};
703     done
704 }
705
706 append(){
707     var=$1
708     shift
709     eval "$var=\"\$$var $*\""
710 }
711
712 prepend(){
713     var=$1
714     shift
715     eval "$var=\"$* \$$var\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cxxflags(){
727     append CXXFLAGS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_ldflags(){
735     append LDFLAGS $($ldflags_filter "$@")
736 }
737
738 add_stripflags(){
739     append ASMSTRIPFLAGS "$@"
740 }
741
742 add_extralibs(){
743     prepend extralibs $($ldflags_filter "$@")
744 }
745
746 add_host_cppflags(){
747     append host_cppflags "$@"
748 }
749
750 add_host_cflags(){
751     append host_cflags $($host_cflags_filter "$@")
752 }
753
754 add_host_ldflags(){
755     append host_ldflags $($host_ldflags_filter "$@")
756 }
757
758 add_compat(){
759     append compat_objs $1
760     shift
761     map 'add_cppflags -D$v' "$@"
762 }
763
764 check_cmd(){
765     log "$@"
766     "$@" >> $logfile 2>&1
767 }
768
769 cc_o(){
770     eval printf '%s\\n' $CC_O
771 }
772
773 cc_e(){
774     eval printf '%s\\n' $CC_E
775 }
776
777 check_cc(){
778     log check_cc "$@"
779     cat > $TMPC
780     log_file $TMPC
781     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
782 }
783
784 check_cxx(){
785     log check_cxx "$@"
786     cat > $TMPCPP
787     log_file $TMPCPP
788     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
789 }
790
791 check_cpp(){
792     log check_cpp "$@"
793     cat > $TMPC
794     log_file $TMPC
795     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
796 }
797
798 as_o(){
799     eval printf '%s\\n' $AS_O
800 }
801
802 check_as(){
803     log check_as "$@"
804     cat > $TMPS
805     log_file $TMPS
806     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
807 }
808
809 check_inline_asm(){
810     log check_inline_asm "$@"
811     name="$1"
812     code="$2"
813     shift 2
814     disable $name
815     check_cc "$@" <<EOF && enable $name
816 void foo(void){ __asm__ volatile($code); }
817 EOF
818 }
819
820 check_insn(){
821     log check_insn "$@"
822     check_inline_asm ${1}_inline "\"$2\""
823     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
824 }
825
826 check_yasm(){
827     log check_yasm "$@"
828     echo "$1" > $TMPS
829     log_file $TMPS
830     shift 1
831     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
832 }
833
834 ld_o(){
835     eval printf '%s\\n' $LD_O
836 }
837
838 check_ld(){
839     log check_ld "$@"
840     type=$1
841     shift 1
842     flags=$(filter_out '-l*|*.so' $@)
843     libs=$(filter '-l*|*.so' $@)
844     check_$type $($cflags_filter $flags) || return
845     flags=$($ldflags_filter $flags)
846     libs=$($ldflags_filter $libs)
847     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
848 }
849
850 print_include(){
851     hdr=$1
852     test "${hdr%.h}" = "${hdr}" &&
853         echo "#include $hdr"    ||
854         echo "#include <$hdr>"
855 }
856
857 check_code(){
858     log check_code "$@"
859     check=$1
860     headers=$2
861     code=$3
862     shift 3
863     {
864         for hdr in $headers; do
865             print_include $hdr
866         done
867         echo "int main(void) { $code; return 0; }"
868     } | check_$check "$@"
869 }
870
871 check_cppflags(){
872     log check_cppflags "$@"
873     check_cc "$@" <<EOF && append CPPFLAGS "$@"
874 int x;
875 EOF
876 }
877
878 test_cflags(){
879     log test_cflags "$@"
880     set -- $($cflags_filter "$@")
881     check_cc "$@" <<EOF
882 int x;
883 EOF
884 }
885
886 check_cflags(){
887     log check_cflags "$@"
888     test_cflags "$@" && add_cflags "$@"
889 }
890
891 check_cxxflags(){
892     log check_cxxflags "$@"
893     set -- $($cflags_filter "$@")
894     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
895 int x;
896 EOF
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "cc" "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "cc" "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "cc" "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return (int) foo; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_class_headers_cpp(){
978     log check_class_headers_cpp "$@"
979     headers=$1
980     classes=$2
981     shift 2
982     {
983         for hdr in $headers; do
984             echo "#include <$hdr>"
985         done
986         echo "int main(void) { "
987         i=1
988         for class in $classes; do
989             echo "$class obj$i;"
990             i=$(expr $i + 1)
991         done
992         echo "return 0; }"
993     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
994 }
995
996 check_cpp_condition(){
997     log check_cpp_condition "$@"
998     header=$1
999     condition=$2
1000     shift 2
1001     check_cpp "$@" <<EOF
1002 #include <$header>
1003 #if !($condition)
1004 #error "unsatisfied condition: $condition"
1005 #endif
1006 EOF
1007 }
1008
1009 check_lib(){
1010     log check_lib "$@"
1011     header="$1"
1012     func="$2"
1013     shift 2
1014     check_header $header && check_func $func "$@" && add_extralibs "$@"
1015 }
1016
1017 check_lib2(){
1018     log check_lib2 "$@"
1019     headers="$1"
1020     funcs="$2"
1021     shift 2
1022     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1023 }
1024
1025 check_lib_cpp(){
1026     log check_lib_cpp "$@"
1027     headers="$1"
1028     classes="$2"
1029     shift 2
1030     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1031 }
1032
1033 check_pkg_config(){
1034     log check_pkg_config "$@"
1035     pkgandversion="$1"
1036     pkg="${1%% *}"
1037     headers="$2"
1038     funcs="$3"
1039     shift 3
1040     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1041     pkg_cflags=$($pkg_config --cflags $pkg)
1042     pkg_libs=$($pkg_config --libs $pkg)
1043     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1044         set_safe ${pkg}_cflags $pkg_cflags   &&
1045         set_safe ${pkg}_libs   $pkg_libs
1046 }
1047
1048 check_exec(){
1049     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1050 }
1051
1052 check_exec_crash(){
1053     code=$(cat)
1054
1055     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1056     # are safe but may not be available everywhere.  Thus we use
1057     # raise(SIGTERM) instead.  The check is run in a subshell so we
1058     # can redirect the "Terminated" message from the shell.  SIGBUS
1059     # is not defined by standard C so it is used conditionally.
1060
1061     (check_exec "$@") >> $logfile 2>&1 <<EOF
1062 #include <signal.h>
1063 static void sighandler(int sig){
1064     raise(SIGTERM);
1065 }
1066 int foo(void){
1067     $code
1068 }
1069 int (*func_ptr)(void) = foo;
1070 int main(void){
1071     signal(SIGILL, sighandler);
1072     signal(SIGFPE, sighandler);
1073     signal(SIGSEGV, sighandler);
1074 #ifdef SIGBUS
1075     signal(SIGBUS, sighandler);
1076 #endif
1077     return func_ptr();
1078 }
1079 EOF
1080 }
1081
1082 check_type(){
1083     log check_type "$@"
1084     headers=$1
1085     type=$2
1086     shift 2
1087     disable_safe "$type"
1088     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1089 }
1090
1091 check_struct(){
1092     log check_struct "$@"
1093     headers=$1
1094     struct=$2
1095     member=$3
1096     shift 3
1097     disable_safe "${struct}_${member}"
1098     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1099         enable_safe "${struct}_${member}"
1100 }
1101
1102 check_builtin(){
1103     log check_builtin "$@"
1104     name=$1
1105     headers=$2
1106     builtin=$3
1107     shift 3
1108     disable "$name"
1109     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1110 }
1111
1112 require(){
1113     name="$1"
1114     header="$2"
1115     func="$3"
1116     shift 3
1117     check_lib $header $func "$@" || die "ERROR: $name not found"
1118 }
1119
1120 require2(){
1121     name="$1"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1126 }
1127
1128 require_cpp(){
1129     name="$1"
1130     headers="$2"
1131     classes="$3"
1132     shift 3
1133     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1134 }
1135
1136 require_pkg_config(){
1137     pkg="$1"
1138     check_pkg_config "$@" || die "ERROR: $pkg not found"
1139     add_cflags    $(get_safe ${pkg}_cflags)
1140     add_extralibs $(get_safe ${pkg}_libs)
1141 }
1142
1143 require_libfreetype(){
1144     log require_libfreetype "$@"
1145     pkg="freetype2"
1146     check_cmd $pkg_config --exists --print-errors $pkg \
1147       || die "ERROR: $pkg not found"
1148     pkg_cflags=$($pkg_config --cflags $pkg)
1149     pkg_libs=$($pkg_config --libs $pkg)
1150     {
1151         echo "#include <ft2build.h>"
1152         echo "#include FT_FREETYPE_H"
1153         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1154         echo "int main(void) { return 0; }"
1155     } | check_ld "cc" $pkg_cflags $pkg_libs \
1156       && set_safe ${pkg}_cflags $pkg_cflags \
1157       && set_safe ${pkg}_libs   $pkg_libs \
1158       || die "ERROR: $pkg not found"
1159     add_cflags    $(get_safe ${pkg}_cflags)
1160     add_extralibs $(get_safe ${pkg}_libs)
1161 }
1162
1163 hostcc_e(){
1164     eval printf '%s\\n' $HOSTCC_E
1165 }
1166
1167 hostcc_o(){
1168     eval printf '%s\\n' $HOSTCC_O
1169 }
1170
1171 check_host_cc(){
1172     log check_host_cc "$@"
1173     cat > $TMPC
1174     log_file $TMPC
1175     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1176 }
1177
1178 check_host_cpp(){
1179     log check_host_cpp "$@"
1180     cat > $TMPC
1181     log_file $TMPC
1182     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1183 }
1184
1185 check_host_cppflags(){
1186     log check_host_cppflags "$@"
1187     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1188 int x;
1189 EOF
1190 }
1191
1192 check_host_cflags(){
1193     log check_host_cflags "$@"
1194     set -- $($host_cflags_filter "$@")
1195     check_host_cc "$@" <<EOF && append host_cflags "$@"
1196 int x;
1197 EOF
1198 }
1199
1200 check_host_cpp_condition(){
1201     log check_host_cpp_condition "$@"
1202     header=$1
1203     condition=$2
1204     shift 2
1205     check_host_cpp "$@" <<EOF
1206 #include <$header>
1207 #if !($condition)
1208 #error "unsatisfied condition: $condition"
1209 #endif
1210 EOF
1211 }
1212
1213 apply(){
1214     file=$1
1215     shift
1216     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1217 }
1218
1219 cp_if_changed(){
1220     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1221     mkdir -p "$(dirname $2)"
1222     $cp_f "$1" "$2"
1223 }
1224
1225 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1226 # system-dependent things.
1227
1228 COMPONENT_LIST="
1229     bsfs
1230     decoders
1231     demuxers
1232     encoders
1233     filters
1234     hwaccels
1235     indevs
1236     muxers
1237     outdevs
1238     parsers
1239     protocols
1240 "
1241
1242 EXAMPLE_LIST="
1243     decoding_encoding_example
1244     demuxing_decoding_example
1245     filtering_audio_example
1246     filtering_video_example
1247     metadata_example
1248     muxing_example
1249     remuxing_example
1250     resampling_audio_example
1251     scaling_video_example
1252     transcode_aac_example
1253 "
1254
1255 EXTERNAL_LIBRARY_LIST="
1256     avisynth
1257     bzlib
1258     crystalhd
1259     fontconfig
1260     frei0r
1261     gnutls
1262     iconv
1263     ladspa
1264     libaacplus
1265     libass
1266     libbluray
1267     libcaca
1268     libcdio
1269     libcelt
1270     libdc1394
1271     libfaac
1272     libfdk_aac
1273     libflite
1274     libfreetype
1275     libgme
1276     libgsm
1277     libiec61883
1278     libilbc
1279     libmodplug
1280     libmp3lame
1281     libnut
1282     libopencore_amrnb
1283     libopencore_amrwb
1284     libopencv
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     libquvi
1289     librtmp
1290     libschroedinger
1291     libshine
1292     libsoxr
1293     libspeex
1294     libssh
1295     libstagefright_h264
1296     libtheora
1297     libtwolame
1298     libutvideo
1299     libv4l2
1300     libvidstab
1301     libvo_aacenc
1302     libvo_amrwbenc
1303     libvorbis
1304     libvpx
1305     libwavpack
1306     libwebp
1307     libx264
1308     libxavs
1309     libxvid
1310     libzmq
1311     libzvbi
1312     openal
1313     opencl
1314     openssl
1315     x11grab
1316     zlib
1317 "
1318
1319 DOCUMENT_LIST="
1320     doc
1321     htmlpages
1322     manpages
1323     podpages
1324     txtpages
1325 "
1326
1327 HWACCEL_LIST="
1328     dxva2
1329     vaapi
1330     vda
1331     vdpau
1332     xvmc
1333 "
1334
1335 LIBRARY_LIST="
1336     avcodec
1337     avdevice
1338     avfilter
1339     avformat
1340     avresample
1341     avutil
1342     postproc
1343     swresample
1344     swscale
1345 "
1346
1347 PROGRAM_LIST="
1348     ffplay
1349     ffprobe
1350     ffserver
1351     ffmpeg
1352 "
1353
1354 CONFIG_LIST="
1355     $COMPONENT_LIST
1356     $DOCUMENT_LIST
1357     $EXAMPLE_LIST
1358     $EXTERNAL_LIBRARY_LIST
1359     $HWACCEL_LIST
1360     $LIBRARY_LIST
1361     $PROGRAM_LIST
1362     dct
1363     dwt
1364     error_resilience
1365     fast_unaligned
1366     fft
1367     ftrapv
1368     gpl
1369     gray
1370     hardcoded_tables
1371     incompatible_libav_abi
1372     incompatible_fork_abi
1373     lsp
1374     lzo
1375     mdct
1376     memalign_hack
1377     memory_poisoning
1378     neon_clobber_test
1379     network
1380     nonfree
1381     pic
1382     raise_major
1383     rdft
1384     runtime_cpudetect
1385     safe_bitstream_reader
1386     shared
1387     small
1388     sram
1389     static
1390     swscale_alpha
1391     thumb
1392     version3
1393     xmm_clobber_test
1394 "
1395
1396 THREADS_LIST='
1397     pthreads
1398     w32threads
1399     os2threads
1400 '
1401
1402 ATOMICS_LIST='
1403     atomics_gcc
1404     atomics_suncc
1405     atomics_win32
1406 '
1407
1408 ARCH_LIST='
1409     aarch64
1410     alpha
1411     arm
1412     avr32
1413     avr32_ap
1414     avr32_uc
1415     bfin
1416     ia64
1417     m68k
1418     mips
1419     mips64
1420     parisc
1421     ppc
1422     ppc64
1423     s390
1424     sh4
1425     sparc
1426     sparc64
1427     tilegx
1428     tilepro
1429     tomi
1430     x86
1431     x86_32
1432     x86_64
1433 '
1434
1435 ARCH_EXT_LIST_ARM='
1436     armv5te
1437     armv6
1438     armv6t2
1439     neon
1440     vfp
1441     vfpv3
1442 '
1443
1444 ARCH_EXT_LIST_X86='
1445     amd3dnow
1446     amd3dnowext
1447     avx
1448     avx2
1449     fma4
1450     i686
1451     mmx
1452     mmxext
1453     sse
1454     sse2
1455     sse3
1456     sse4
1457     sse42
1458     ssse3
1459 '
1460
1461 ARCH_EXT_LIST="
1462     $ARCH_EXT_LIST_ARM
1463     $ARCH_EXT_LIST_X86
1464     altivec
1465     ppc4xx
1466     vis
1467     mipsfpu
1468     mips32r2
1469     mipsdspr1
1470     mipsdspr2
1471 "
1472
1473 HAVE_LIST_CMDLINE='
1474     inline_asm
1475     symver
1476     yasm
1477 '
1478
1479 HAVE_LIST_PUB='
1480     bigendian
1481     fast_unaligned
1482     incompatible_libav_abi
1483     incompatible_fork_abi
1484 '
1485
1486 MATH_FUNCS="
1487     atanf
1488     atan2f
1489     cbrt
1490     cbrtf
1491     cosf
1492     exp2
1493     exp2f
1494     expf
1495     isinf
1496     isnan
1497     ldexpf
1498     llrint
1499     llrintf
1500     log2
1501     log2f
1502     log10f
1503     lrint
1504     lrintf
1505     powf
1506     rint
1507     round
1508     roundf
1509     sinf
1510     trunc
1511     truncf
1512 "
1513
1514 HAVE_LIST="
1515     $ARCH_EXT_LIST
1516     $(add_suffix _external $ARCH_EXT_LIST)
1517     $(add_suffix _inline   $ARCH_EXT_LIST)
1518     $HAVE_LIST_CMDLINE
1519     $HAVE_LIST_PUB
1520     $THREADS_LIST
1521     $ATOMICS_LIST
1522     $MATH_FUNCS
1523     access
1524     aligned_malloc
1525     aligned_stack
1526     alsa_asoundlib_h
1527     altivec_h
1528     arpa_inet_h
1529     asm_mod_q
1530     asm_mod_y
1531     asm_types_h
1532     atomic_cas_ptr
1533     atomics_native
1534     attribute_may_alias
1535     attribute_packed
1536     cdio_paranoia_h
1537     cdio_paranoia_paranoia_h
1538     CL_cl_h
1539     clock_gettime
1540     closesocket
1541     CommandLineToArgvW
1542     cpunop
1543     CryptGenRandom
1544     dcbzl
1545     dev_bktr_ioctl_bt848_h
1546     dev_bktr_ioctl_meteor_h
1547     dev_ic_bt8xx_h
1548     dev_video_bktr_ioctl_bt848_h
1549     dev_video_meteor_ioctl_meteor_h
1550     direct_h
1551     dlfcn_h
1552     dlopen
1553     dos_paths
1554     dxva_h
1555     ebp_available
1556     ebx_available
1557     fast_64bit
1558     fast_clz
1559     fast_cmov
1560     fcntl
1561     fork
1562     getaddrinfo
1563     gethrtime
1564     getopt
1565     GetProcessAffinityMask
1566     GetProcessMemoryInfo
1567     GetProcessTimes
1568     GetSystemTimeAsFileTime
1569     getrusage
1570     getservbyport
1571     gettimeofday
1572     glob
1573     gnu_as
1574     gnu_windres
1575     gsm_h
1576     ibm_asm
1577     inet_aton
1578     io_h
1579     inline_asm_labels
1580     isatty
1581     jack_port_get_latency_range
1582     kbhit
1583     ldbrx
1584     libc_msvcrt
1585     libdc1394_1
1586     libdc1394_2
1587     local_aligned_16
1588     local_aligned_8
1589     localtime_r
1590     loongson
1591     lzo1x_999_compress
1592     machine_ioctl_bt848_h
1593     machine_ioctl_meteor_h
1594     machine_rw_barrier
1595     makeinfo
1596     malloc_h
1597     MapViewOfFile
1598     memalign
1599     MemoryBarrier
1600     mkstemp
1601     mm_empty
1602     mmap
1603     mprotect
1604     nanosleep
1605     openjpeg_1_5_openjpeg_h
1606     PeekNamedPipe
1607     perl
1608     pod2man
1609     poll_h
1610     posix_memalign
1611     pragma_deprecated
1612     pthread_cancel
1613     rdtsc
1614     rsync_contimeout
1615     sarestart
1616     sched_getaffinity
1617     sdl
1618     SetConsoleTextAttribute
1619     setmode
1620     setrlimit
1621     Sleep
1622     sndio_h
1623     socklen_t
1624     soundcard_h
1625     strerror_r
1626     struct_addrinfo
1627     struct_group_source_req
1628     struct_ip_mreq_source
1629     struct_ipv6_mreq
1630     struct_pollfd
1631     struct_rusage_ru_maxrss
1632     struct_sctp_event_subscribe
1633     struct_sockaddr_in6
1634     struct_sockaddr_sa_len
1635     struct_sockaddr_storage
1636     struct_stat_st_mtim_tv_nsec
1637     struct_v4l2_frmivalenum_discrete
1638     symver_asm_label
1639     symver_gnu_asm
1640     sync_val_compare_and_swap
1641     sysconf
1642     sysctl
1643     sys_mman_h
1644     sys_param_h
1645     sys_resource_h
1646     sys_select_h
1647     sys_soundcard_h
1648     sys_time_h
1649     sys_un_h
1650     sys_videoio_h
1651     termios_h
1652     texi2html
1653     threads
1654     unistd_h
1655     usleep
1656     vdpau_x11
1657     vfp_args
1658     VirtualAlloc
1659     windows_h
1660     winsock2_h
1661     xform_asm
1662     xlib
1663     xmm_clobbers
1664 "
1665
1666 # options emitted with CONFIG_ prefix but not available on the command line
1667 CONFIG_EXTRA="
1668     aandcttables
1669     ac3dsp
1670     audio_frame_queue
1671     dsputil
1672     exif
1673     frame_thread_encoder
1674     gcrypt
1675     golomb
1676     gplv3
1677     h263dsp
1678     h264chroma
1679     h264dsp
1680     h264pred
1681     h264qpel
1682     hpeldsp
1683     huffman
1684     intrax8
1685     lgplv3
1686     lpc
1687     mpegaudio
1688     mpegaudiodsp
1689     mpegvideo
1690     mpegvideoenc
1691     nettle
1692     rangecoder
1693     riffdec
1694     riffenc
1695     rtpdec
1696     rtpenc_chain
1697     sinewin
1698     videodsp
1699     vp3dsp
1700 "
1701
1702 CMDLINE_SELECT="
1703     $ARCH_EXT_LIST
1704     $CONFIG_LIST
1705     $HAVE_LIST_CMDLINE
1706     $THREADS_LIST
1707     asm
1708     cross_compile
1709     debug
1710     extra_warnings
1711     logging
1712     lto
1713     optimizations
1714     rpath
1715     stripping
1716 "
1717
1718 PATHS_LIST='
1719     bindir
1720     datadir
1721     docdir
1722     incdir
1723     libdir
1724     mandir
1725     prefix
1726     shlibdir
1727 '
1728
1729 CMDLINE_SET="
1730     $PATHS_LIST
1731     ar
1732     arch
1733     as
1734     assert_level
1735     build_suffix
1736     cc
1737     cpu
1738     cross_prefix
1739     cxx
1740     dep_cc
1741     extra_version
1742     host_cc
1743     host_cflags
1744     host_ld
1745     host_ldflags
1746     host_libs
1747     host_os
1748     install
1749     ld
1750     logfile
1751     malloc_prefix
1752     nm
1753     optflags
1754     pkg_config
1755     progs_suffix
1756     random_seed
1757     samples
1758     strip
1759     sysinclude
1760     sysroot
1761     target_exec
1762     target_os
1763     target_path
1764     target_samples
1765     tempprefix
1766     toolchain
1767     valgrind
1768     yasmexe
1769 "
1770
1771 CMDLINE_APPEND="
1772     extra_cflags
1773     extra_cxxflags
1774     host_cppflags
1775 "
1776
1777 # code dependency declarations
1778
1779 # architecture extensions
1780
1781 armv5te_deps="arm"
1782 armv6_deps="arm"
1783 armv6t2_deps="arm"
1784 neon_deps_any="aarch64 arm"
1785 vfp_deps_any="aarch64 arm"
1786 vfpv3_deps="vfp"
1787
1788 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1789
1790 mipsfpu_deps="mips"
1791 mips32r2_deps="mips"
1792 mipsdspr1_deps="mips"
1793 mipsdspr2_deps="mips"
1794
1795 altivec_deps="ppc"
1796 ppc4xx_deps="ppc"
1797
1798 vis_deps="sparc"
1799
1800 cpunop_deps="i686"
1801 x86_64_select="i686"
1802 x86_64_suggest="fast_cmov"
1803
1804 amd3dnow_deps="mmx"
1805 amd3dnowext_deps="amd3dnow"
1806 mmx_deps="x86"
1807 mmxext_deps="mmx"
1808 sse_deps="mmxext"
1809 sse2_deps="sse"
1810 sse3_deps="sse2"
1811 ssse3_deps="sse3"
1812 sse4_deps="ssse3"
1813 sse42_deps="sse4"
1814 avx_deps="sse42"
1815 fma4_deps="avx"
1816 avx2_deps="avx"
1817
1818 mmx_external_deps="yasm"
1819 mmx_inline_deps="inline_asm"
1820 mmx_suggest="mmx_external mmx_inline"
1821
1822 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1823     eval dep=\$${ext}_deps
1824     eval ${ext}_external_deps='"${dep}_external"'
1825     eval ${ext}_inline_deps='"${dep}_inline"'
1826     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1827 done
1828
1829 aligned_stack_if_any="aarch64 ppc x86"
1830 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1831 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1832 fast_unaligned_if_any="aarch64 ppc x86"
1833
1834 need_memalign="altivec neon sse"
1835
1836 # system capabilities
1837 log2_deps="!libc_msvcrt"
1838
1839 symver_if_any="symver_asm_label symver_gnu_asm"
1840
1841 # threading support
1842 atomics_gcc_if="sync_val_compare_and_swap"
1843 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1844 atomics_win32_if="MemoryBarrier"
1845 atomics_native_if_any="$ATOMICS_LIST"
1846 threads_if_any="$THREADS_LIST"
1847
1848 # subsystems
1849 dct_select="rdft"
1850 error_resilience_select="dsputil"
1851 frame_thread_encoder_deps="encoders threads"
1852 lpc_select="dsputil"
1853 mdct_select="fft"
1854 rdft_select="fft"
1855 mpegaudio_select="mpegaudiodsp"
1856 mpegaudiodsp_select="dct"
1857 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1858 mpegvideoenc_select="mpegvideo"
1859
1860 # decoders / encoders
1861 aac_decoder_select="mdct sinewin"
1862 aac_encoder_select="audio_frame_queue mdct sinewin"
1863 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1864 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1865 ac3_encoder_select="mdct ac3dsp dsputil"
1866 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1867 aic_decoder_select="dsputil golomb"
1868 alac_encoder_select="lpc"
1869 als_decoder_select="dsputil"
1870 amrnb_decoder_select="lsp"
1871 amrwb_decoder_select="lsp"
1872 amv_decoder_select="dsputil hpeldsp exif"
1873 amv_encoder_select="aandcttables"
1874 ape_decoder_select="dsputil"
1875 asv1_decoder_select="dsputil"
1876 asv1_encoder_select="dsputil"
1877 asv2_decoder_select="dsputil"
1878 asv2_encoder_select="dsputil"
1879 atrac1_decoder_select="mdct sinewin"
1880 atrac3_decoder_select="mdct"
1881 atrac3p_decoder_select="mdct sinewin"
1882 avrn_decoder_select="exif"
1883 bink_decoder_select="dsputil hpeldsp"
1884 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1885 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1886 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1887 cllc_decoder_select="dsputil"
1888 comfortnoise_encoder_select="lpc"
1889 cook_decoder_select="dsputil mdct sinewin"
1890 cscd_decoder_select="lzo"
1891 cscd_decoder_suggest="zlib"
1892 dca_decoder_select="mdct"
1893 dirac_decoder_select="dsputil dwt golomb videodsp"
1894 dnxhd_decoder_select="dsputil"
1895 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1896 dvvideo_decoder_select="dsputil"
1897 dvvideo_encoder_select="dsputil"
1898 dxa_decoder_select="zlib"
1899 eac3_decoder_select="ac3_decoder"
1900 eac3_encoder_select="ac3_encoder"
1901 eamad_decoder_select="aandcttables dsputil mpegvideo"
1902 eatgq_decoder_select="aandcttables"
1903 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1904 exr_decoder_select="zlib"
1905 ffv1_decoder_select="dsputil golomb rangecoder"
1906 ffv1_encoder_select="dsputil rangecoder"
1907 ffvhuff_decoder_select="dsputil"
1908 ffvhuff_encoder_select="dsputil huffman"
1909 flac_decoder_select="golomb"
1910 flac_encoder_select="dsputil golomb lpc"
1911 flashsv_decoder_select="zlib"
1912 flashsv_encoder_select="zlib"
1913 flashsv2_encoder_select="zlib"
1914 flashsv2_decoder_select="zlib"
1915 flv_decoder_select="h263_decoder"
1916 flv_encoder_select="h263_encoder"
1917 fourxm_decoder_select="dsputil"
1918 fraps_decoder_select="dsputil huffman"
1919 g2m_decoder_select="dsputil zlib"
1920 g729_decoder_select="dsputil"
1921 h261_decoder_select="error_resilience mpegvideo"
1922 h261_encoder_select="aandcttables mpegvideoenc"
1923 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1924 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1925 h263i_decoder_select="h263_decoder"
1926 h263p_encoder_select="h263_encoder"
1927 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1928 h264_decoder_suggest="error_resilience"
1929 hevc_decoder_select="dsputil golomb videodsp"
1930 huffyuv_decoder_select="dsputil"
1931 huffyuv_encoder_select="dsputil huffman"
1932 iac_decoder_select="dsputil fft mdct sinewin"
1933 imc_decoder_select="dsputil fft mdct sinewin"
1934 indeo3_decoder_select="hpeldsp"
1935 interplay_video_decoder_select="hpeldsp"
1936 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1937 jpegls_encoder_select="golomb"
1938 jv_decoder_select="dsputil"
1939 lagarith_decoder_select="dsputil"
1940 ljpeg_encoder_select="aandcttables mpegvideoenc"
1941 loco_decoder_select="golomb"
1942 mdec_decoder_select="dsputil error_resilience mpegvideo"
1943 metasound_decoder_select="lsp mdct sinewin"
1944 mimic_decoder_select="dsputil hpeldsp"
1945 mjpeg_decoder_select="dsputil hpeldsp exif"
1946 mjpegb_decoder_select="dsputil hpeldsp exif"
1947 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1948 mlp_decoder_select="dsputil mlp_parser"
1949 motionpixels_decoder_select="dsputil"
1950 mp1_decoder_select="mpegaudio"
1951 mp1float_decoder_select="mpegaudio"
1952 mp2_decoder_select="mpegaudio"
1953 mp2float_decoder_select="mpegaudio"
1954 mp3_decoder_select="mpegaudio"
1955 mp3adu_decoder_select="mpegaudio"
1956 mp3adufloat_decoder_select="mpegaudio"
1957 mp3float_decoder_select="mpegaudio"
1958 mp3on4_decoder_select="mpegaudio"
1959 mp3on4float_decoder_select="mpegaudio"
1960 mpc7_decoder_select="dsputil mpegaudiodsp"
1961 mpc8_decoder_select="dsputil mpegaudiodsp"
1962 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1963 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1964 mpeg1video_decoder_select="error_resilience mpegvideo"
1965 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1966 mpeg2video_decoder_select="error_resilience mpegvideo"
1967 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1968 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1969 mpeg4_encoder_select="h263_encoder"
1970 msmpeg4v1_decoder_select="h263_decoder"
1971 msmpeg4v2_decoder_select="h263_decoder"
1972 msmpeg4v2_encoder_select="h263_encoder"
1973 msmpeg4v3_decoder_select="h263_decoder"
1974 msmpeg4v3_encoder_select="h263_encoder"
1975 mss2_decoder_select="error_resilience vc1_decoder"
1976 mxpeg_decoder_select="dsputil hpeldsp exif"
1977 nellymoser_decoder_select="mdct sinewin"
1978 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1979 nuv_decoder_select="dsputil lzo"
1980 png_decoder_select="zlib"
1981 png_encoder_select="dsputil zlib"
1982 prores_decoder_select="dsputil"
1983 prores_encoder_select="dsputil"
1984 qcelp_decoder_select="lsp"
1985 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1986 ra_144_encoder_select="audio_frame_queue lpc"
1987 ralf_decoder_select="golomb"
1988 rtjpeg_decoder_select="dsputil"
1989 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1990 rv10_encoder_select="h263_encoder"
1991 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1992 rv20_encoder_select="h263_encoder"
1993 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1994 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1995 shorten_decoder_select="golomb"
1996 sipr_decoder_select="lsp"
1997 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1998 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1999 sonic_decoder_select="golomb"
2000 sonic_encoder_select="golomb"
2001 sonic_ls_encoder_select="golomb"
2002 sp5x_decoder_select="dsputil hpeldsp exif"
2003 svq1_decoder_select="hpeldsp"
2004 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2005 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
2006 svq3_decoder_suggest="error_resilience zlib"
2007 tak_decoder_select="dsputil"
2008 theora_decoder_select="vp3_decoder"
2009 tiff_decoder_suggest="zlib"
2010 tiff_encoder_suggest="zlib"
2011 thp_decoder_select="dsputil hpeldsp exif"
2012 truehd_decoder_select="mlp_parser"
2013 truemotion2_decoder_select="dsputil"
2014 truespeech_decoder_select="dsputil"
2015 tscc_decoder_select="zlib"
2016 twinvq_decoder_select="mdct lsp sinewin"
2017 utvideo_decoder_select="dsputil"
2018 utvideo_encoder_select="dsputil huffman"
2019 vble_decoder_select="dsputil"
2020 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2021 vc1image_decoder_select="vc1_decoder"
2022 vorbis_decoder_select="mdct"
2023 vorbis_encoder_select="mdct"
2024 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2025 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2026 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2027 vp6a_decoder_select="vp6_decoder"
2028 vp6f_decoder_select="vp6_decoder"
2029 vp8_decoder_select="h264pred videodsp"
2030 vp9_decoder_select="videodsp"
2031 webp_decoder_select="vp8_decoder"
2032 wmapro_decoder_select="mdct sinewin"
2033 wmav1_decoder_select="mdct sinewin"
2034 wmav1_encoder_select="mdct sinewin"
2035 wmav2_decoder_select="mdct sinewin"
2036 wmav2_encoder_select="mdct sinewin"
2037 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2038 wmv1_decoder_select="h263_decoder"
2039 wmv1_encoder_select="h263_encoder"
2040 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2041 wmv2_encoder_select="h263_encoder"
2042 wmv3_decoder_select="vc1_decoder"
2043 wmv3image_decoder_select="wmv3_decoder"
2044 zerocodec_decoder_select="zlib"
2045 zlib_decoder_select="zlib"
2046 zlib_encoder_select="zlib"
2047 zmbv_decoder_select="zlib"
2048 zmbv_encoder_select="zlib"
2049
2050 # hardware accelerators
2051 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2052 dxva2_deps="dxva2api_h"
2053 vaapi_deps="va_va_h"
2054 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2055 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2056 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2057 xvmc_deps="X11_extensions_XvMClib_h"
2058
2059 h263_vaapi_hwaccel_deps="vaapi"
2060 h263_vaapi_hwaccel_select="h263_decoder"
2061 h263_vdpau_hwaccel_deps="vdpau"
2062 h263_vdpau_hwaccel_select="h263_decoder"
2063 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2064 h264_dxva2_hwaccel_deps="dxva2"
2065 h264_dxva2_hwaccel_select="h264_decoder"
2066 h264_vaapi_hwaccel_deps="vaapi"
2067 h264_vaapi_hwaccel_select="h264_decoder"
2068 h264_vda_decoder_deps="vda"
2069 h264_vda_decoder_select="h264_decoder"
2070 h264_vda_hwaccel_deps="vda"
2071 h264_vda_hwaccel_select="h264_decoder"
2072 h264_vdpau_decoder_deps="vdpau"
2073 h264_vdpau_decoder_select="h264_decoder"
2074 h264_vdpau_hwaccel_deps="vdpau"
2075 h264_vdpau_hwaccel_select="h264_decoder"
2076 mpeg_vdpau_decoder_deps="vdpau"
2077 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2078 mpeg_xvmc_hwaccel_deps="xvmc"
2079 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2080 mpeg1_vdpau_decoder_deps="vdpau"
2081 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2082 mpeg1_vdpau_hwaccel_deps="vdpau"
2083 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2084 mpeg1_xvmc_hwaccel_deps="xvmc"
2085 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2086 mpeg2_crystalhd_decoder_select="crystalhd"
2087 mpeg2_dxva2_hwaccel_deps="dxva2"
2088 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2089 mpeg2_vaapi_hwaccel_deps="vaapi"
2090 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2091 mpeg2_vdpau_hwaccel_deps="vdpau"
2092 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2093 mpeg2_xvmc_hwaccel_deps="xvmc"
2094 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2095 mpeg4_crystalhd_decoder_select="crystalhd"
2096 mpeg4_vaapi_hwaccel_deps="vaapi"
2097 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2098 mpeg4_vdpau_decoder_deps="vdpau"
2099 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2100 mpeg4_vdpau_hwaccel_deps="vdpau"
2101 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2102 msmpeg4_crystalhd_decoder_select="crystalhd"
2103 vc1_crystalhd_decoder_select="crystalhd"
2104 vc1_dxva2_hwaccel_deps="dxva2"
2105 vc1_dxva2_hwaccel_select="vc1_decoder"
2106 vc1_vaapi_hwaccel_deps="vaapi"
2107 vc1_vaapi_hwaccel_select="vc1_decoder"
2108 vc1_vdpau_decoder_deps="vdpau"
2109 vc1_vdpau_decoder_select="vc1_decoder"
2110 vc1_vdpau_hwaccel_deps="vdpau"
2111 vc1_vdpau_hwaccel_select="vc1_decoder"
2112 wmv3_crystalhd_decoder_select="crystalhd"
2113 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2114 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2115 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2116 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2117
2118 # parsers
2119 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2120 hevc_parser_select="hevc_decoder"
2121 mpeg4video_parser_select="error_resilience mpegvideo"
2122 mpegvideo_parser_select="error_resilience mpegvideo"
2123 vc1_parser_select="mpegvideo"
2124
2125 # external libraries
2126 libaacplus_encoder_deps="libaacplus"
2127 libcelt_decoder_deps="libcelt"
2128 libfaac_encoder_deps="libfaac"
2129 libfaac_encoder_select="audio_frame_queue"
2130 libfdk_aac_decoder_deps="libfdk_aac"
2131 libfdk_aac_encoder_deps="libfdk_aac"
2132 libfdk_aac_encoder_select="audio_frame_queue"
2133 libgme_demuxer_deps="libgme"
2134 libgsm_decoder_deps="libgsm"
2135 libgsm_encoder_deps="libgsm"
2136 libgsm_ms_decoder_deps="libgsm"
2137 libgsm_ms_encoder_deps="libgsm"
2138 libilbc_decoder_deps="libilbc"
2139 libilbc_encoder_deps="libilbc"
2140 libmodplug_demuxer_deps="libmodplug"
2141 libmp3lame_encoder_deps="libmp3lame"
2142 libmp3lame_encoder_select="audio_frame_queue"
2143 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2144 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2145 libopencore_amrnb_encoder_select="audio_frame_queue"
2146 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2147 libopenjpeg_decoder_deps="libopenjpeg"
2148 libopenjpeg_encoder_deps="libopenjpeg"
2149 libopus_decoder_deps="libopus"
2150 libopus_encoder_deps="libopus"
2151 libopus_encoder_select="audio_frame_queue"
2152 libquvi_demuxer_deps="libquvi"
2153 libschroedinger_decoder_deps="libschroedinger"
2154 libschroedinger_encoder_deps="libschroedinger"
2155 libshine_encoder_deps="libshine"
2156 libshine_encoder_select="audio_frame_queue"
2157 libspeex_decoder_deps="libspeex"
2158 libspeex_encoder_deps="libspeex"
2159 libspeex_encoder_select="audio_frame_queue"
2160 libstagefright_h264_decoder_deps="libstagefright_h264"
2161 libtheora_encoder_deps="libtheora"
2162 libtwolame_encoder_deps="libtwolame"
2163 libvo_aacenc_encoder_deps="libvo_aacenc"
2164 libvo_aacenc_encoder_select="audio_frame_queue"
2165 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2166 libvorbis_decoder_deps="libvorbis"
2167 libvorbis_encoder_deps="libvorbis"
2168 libvorbis_encoder_select="audio_frame_queue"
2169 libvpx_vp8_decoder_deps="libvpx"
2170 libvpx_vp8_encoder_deps="libvpx"
2171 libvpx_vp9_decoder_deps="libvpx"
2172 libvpx_vp9_encoder_deps="libvpx"
2173 libwavpack_encoder_deps="libwavpack"
2174 libwebp_encoder_deps="libwebp"
2175 libx264_encoder_deps="libx264"
2176 libx264rgb_encoder_deps="libx264"
2177 libxavs_encoder_deps="libxavs"
2178 libxvid_encoder_deps="libxvid"
2179 libutvideo_decoder_deps="libutvideo"
2180 libutvideo_encoder_deps="libutvideo"
2181 libzvbi_teletext_decoder_deps="libzvbi"
2182
2183 # demuxers / muxers
2184 ac3_demuxer_select="ac3_parser"
2185 asf_demuxer_select="riffdec"
2186 asf_muxer_select="riffenc"
2187 asf_stream_muxer_select="asf_muxer"
2188 avi_demuxer_select="riffdec"
2189 avi_muxer_select="riffenc"
2190 avisynth_demuxer_deps="avisynth"
2191 avisynth_demuxer_select="riffdec"
2192 caf_demuxer_select="riffdec"
2193 dirac_demuxer_select="dirac_parser"
2194 dts_demuxer_select="dca_parser"
2195 dtshd_demuxer_select="dca_parser"
2196 dxa_demuxer_select="riffdec"
2197 eac3_demuxer_select="ac3_parser"
2198 f4v_muxer_select="mov_muxer"
2199 flac_demuxer_select="flac_parser"
2200 hds_muxer_select="flv_muxer"
2201 hls_muxer_select="mpegts_muxer"
2202 ipod_muxer_select="mov_muxer"
2203 ismv_muxer_select="mov_muxer"
2204 libnut_demuxer_deps="libnut"
2205 libnut_muxer_deps="libnut"
2206 matroska_audio_muxer_select="matroska_muxer"
2207 matroska_demuxer_select="riffdec"
2208 matroska_demuxer_suggest="bzlib lzo zlib"
2209 matroska_muxer_select="riffenc"
2210 mmf_muxer_select="riffenc"
2211 mov_demuxer_select="riffdec"
2212 mov_demuxer_suggest="zlib"
2213 mov_muxer_select="riffenc rtpenc_chain"
2214 mp3_demuxer_select="mpegaudio_parser"
2215 mp4_muxer_select="mov_muxer"
2216 mpegts_muxer_select="adts_muxer latm_muxer"
2217 mpegtsraw_demuxer_select="mpegts_demuxer"
2218 mxf_d10_muxer_select="mxf_muxer"
2219 nut_muxer_select="riffenc"
2220 nuv_demuxer_select="riffdec"
2221 ogg_demuxer_select="golomb"
2222 psp_muxer_select="mov_muxer"
2223 rtp_demuxer_select="sdp_demuxer"
2224 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2225 rtsp_demuxer_select="http_protocol rtpdec"
2226 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2227 sap_demuxer_select="sdp_demuxer"
2228 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2229 sdp_demuxer_select="rtpdec"
2230 smoothstreaming_muxer_select="ismv_muxer"
2231 spdif_muxer_select="aac_parser"
2232 tak_demuxer_select="tak_parser"
2233 tg2_muxer_select="mov_muxer"
2234 tgp_muxer_select="mov_muxer"
2235 vobsub_demuxer_select="mpegps_demuxer"
2236 w64_demuxer_select="wav_demuxer"
2237 w64_muxer_select="wav_muxer"
2238 wav_demuxer_select="riffdec"
2239 wav_muxer_select="riffenc"
2240 webm_muxer_select="riffenc"
2241 wtv_demuxer_select="riffdec"
2242 xmv_demuxer_select="riffdec"
2243 xwma_demuxer_select="riffdec"
2244
2245 # indevs / outdevs
2246 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2247 alsa_outdev_deps="alsa_asoundlib_h"
2248 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2249 caca_outdev_deps="libcaca"
2250 dshow_indev_deps="IBaseFilter"
2251 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2252 dv1394_indev_deps="dv1394"
2253 dv1394_indev_select="dv_demuxer"
2254 fbdev_indev_deps="linux_fb_h"
2255 fbdev_outdev_deps="linux_fb_h"
2256 iec61883_indev_deps="libiec61883"
2257 jack_indev_deps="jack_jack_h sem_timedwait"
2258 lavfi_indev_deps="avfilter"
2259 libcdio_indev_deps="libcdio"
2260 libdc1394_indev_deps="libdc1394"
2261 libv4l2_indev_deps="libv4l2"
2262 openal_indev_deps="openal"
2263 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2264 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2265 pulse_indev_deps="libpulse"
2266 pulse_outdev_deps="libpulse"
2267 sdl_outdev_deps="sdl"
2268 sndio_indev_deps="sndio_h"
2269 sndio_outdev_deps="sndio_h"
2270 v4l_indev_deps="linux_videodev_h"
2271 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2272 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2273 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2274 vfwcap_indev_extralibs="-lavicap32"
2275 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2276 xv_outdev_extralibs="-lXv -lX11 -lXext"
2277 x11grab_indev_deps="x11grab"
2278
2279 # protocols
2280 bluray_protocol_deps="libbluray"
2281 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2282 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2283 ffrtmpcrypt_protocol_select="tcp_protocol"
2284 ffrtmphttp_protocol_deps="!librtmp_protocol"
2285 ffrtmphttp_protocol_select="http_protocol"
2286 ftp_protocol_select="tcp_protocol"
2287 gopher_protocol_select="network"
2288 httpproxy_protocol_select="tcp_protocol"
2289 http_protocol_select="tcp_protocol"
2290 https_protocol_select="tls_protocol"
2291 librtmp_protocol_deps="librtmp"
2292 librtmpe_protocol_deps="librtmp"
2293 librtmps_protocol_deps="librtmp"
2294 librtmpt_protocol_deps="librtmp"
2295 librtmpte_protocol_deps="librtmp"
2296 libssh_protocol_deps="libssh"
2297 mmsh_protocol_select="http_protocol"
2298 mmst_protocol_select="network"
2299 rtmp_protocol_deps="!librtmp_protocol"
2300 rtmp_protocol_select="tcp_protocol"
2301 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2302 rtmps_protocol_deps="!librtmp_protocol"
2303 rtmps_protocol_select="tls_protocol"
2304 rtmpt_protocol_select="ffrtmphttp_protocol"
2305 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2306 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2307 rtp_protocol_select="udp_protocol"
2308 sctp_protocol_deps="struct_sctp_event_subscribe"
2309 sctp_protocol_select="network"
2310 srtp_protocol_select="rtp_protocol"
2311 tcp_protocol_select="network"
2312 tls_protocol_deps_any="openssl gnutls"
2313 tls_protocol_select="tcp_protocol"
2314 udp_protocol_select="network"
2315 unix_protocol_deps="sys_un_h"
2316 unix_protocol_select="network"
2317
2318 # filters
2319 aconvert_filter_deps="swresample"
2320 amovie_filter_deps="avcodec avformat"
2321 aresample_filter_deps="swresample"
2322 ass_filter_deps="libass"
2323 asyncts_filter_deps="avresample"
2324 atempo_filter_deps="avcodec"
2325 atempo_filter_select="rdft"
2326 azmq_filter_deps="libzmq"
2327 blackframe_filter_deps="gpl"
2328 boxblur_filter_deps="gpl"
2329 colormatrix_filter_deps="gpl"
2330 cropdetect_filter_deps="gpl"
2331 dctdnoiz_filter_deps="avcodec"
2332 dctdnoiz_filter_select="fft"
2333 delogo_filter_deps="gpl"
2334 deshake_filter_deps="avcodec"
2335 deshake_filter_select="dsputil"
2336 drawtext_filter_deps="libfreetype"
2337 ebur128_filter_deps="gpl"
2338 flite_filter_deps="libflite"
2339 frei0r_filter_deps="frei0r dlopen"
2340 frei0r_filter_extralibs='$ldl'
2341 frei0r_src_filter_deps="frei0r dlopen"
2342 frei0r_src_filter_extralibs='$ldl'
2343 geq_filter_deps="gpl"
2344 histeq_filter_deps="gpl"
2345 hqdn3d_filter_deps="gpl"
2346 interlace_filter_deps="gpl"
2347 kerndeint_filter_deps="gpl"
2348 ladspa_filter_deps="ladspa dlopen"
2349 mcdeint_filter_deps="avcodec gpl"
2350 movie_filter_deps="avcodec avformat"
2351 mp_filter_deps="gpl avcodec swscale inline_asm"
2352 mpdecimate_filter_deps="gpl avcodec"
2353 mptestsrc_filter_deps="gpl"
2354 negate_filter_deps="lut_filter"
2355 perspective_filter_deps="gpl"
2356 resample_filter_deps="avresample"
2357 ocv_filter_deps="libopencv"
2358 owdenoise_filter_deps="gpl"
2359 pan_filter_deps="swresample"
2360 phase_filter_deps="gpl"
2361 pp_filter_deps="gpl postproc"
2362 pullup_filter_deps="gpl"
2363 removelogo_filter_deps="avcodec avformat swscale"
2364 sab_filter_deps="gpl swscale"
2365 scale_filter_deps="swscale"
2366 smartblur_filter_deps="gpl swscale"
2367 showspectrum_filter_deps="avcodec"
2368 showspectrum_filter_select="rdft"
2369 spp_filter_deps="gpl avcodec"
2370 spp_filter_select="fft"
2371 stereo3d_filter_deps="gpl"
2372 subtitles_filter_deps="avformat avcodec libass"
2373 super2xsai_filter_deps="gpl"
2374 tinterlace_filter_deps="gpl"
2375 vidstabdetect_filter_deps="libvidstab"
2376 vidstabtransform_filter_deps="libvidstab"
2377 pixfmts_super2xsai_test_deps="super2xsai_filter"
2378 tinterlace_merge_test_deps="tinterlace_filter"
2379 tinterlace_pad_test_deps="tinterlace_filter"
2380 zmq_filter_deps="libzmq"
2381
2382 # examples
2383 decoding_encoding_example_deps="avcodec avutil"
2384 demuxing_decoding_example_deps="avcodec avformat avutil"
2385 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2386 filtering_video_example_deps="avfilter avcodec avformat avutil"
2387 metadata_example_deps="avformat avutil"
2388 muxing_example_deps="avcodec avformat avutil swscale"
2389 resampling_audio_example_deps="avutil swresample"
2390 scaling_video_example_deps="avutil swscale"
2391 transcode_aac_example_deps="avcodec avformat swresample"
2392
2393 # libraries
2394 avcodec_deps="avutil"
2395 avdevice_deps="avutil avcodec avformat"
2396 avfilter_deps="avutil"
2397 avformat_deps="avutil avcodec"
2398 avresample_deps="avutil"
2399 postproc_deps="avutil gpl"
2400 swscale_deps="avutil"
2401
2402 # programs
2403 ffmpeg_deps="avcodec avfilter avformat swresample"
2404 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2405                null_filter
2406                setpts_filter trim_filter"
2407 ffplay_deps="avcodec avformat swscale swresample sdl"
2408 ffplay_select="rdft crop_filter"
2409 ffprobe_deps="avcodec avformat"
2410 ffserver_deps="avformat fork sarestart"
2411 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2412 ffserver_extralibs='$ldl'
2413
2414 # documentation
2415 podpages_deps="perl"
2416 manpages_deps="perl pod2man"
2417 htmlpages_deps="perl texi2html"
2418 txtpages_deps="perl makeinfo"
2419 doc_deps_any="manpages htmlpages podpages txtpages"
2420
2421 # default parameters
2422
2423 logfile="config.log"
2424
2425 # installation paths
2426 prefix_default="/usr/local"
2427 bindir_default='${prefix}/bin'
2428 datadir_default='${prefix}/share/ffmpeg'
2429 docdir_default='${prefix}/share/doc/ffmpeg'
2430 incdir_default='${prefix}/include'
2431 libdir_default='${prefix}/lib'
2432 mandir_default='${prefix}/share/man'
2433 shlibdir_default="$libdir_default"
2434
2435 # toolchain
2436 ar_default="ar"
2437 cc_default="gcc"
2438 cxx_default="g++"
2439 host_cc_default="gcc"
2440 cp_f="cp -f"
2441 install="install"
2442 ln_s="ln -s -f"
2443 nm_default="nm -g"
2444 objformat="elf"
2445 pkg_config_default=pkg-config
2446 ranlib="ranlib"
2447 strip_default="strip"
2448 yasmexe_default="yasm"
2449 windres_default="windres"
2450
2451 nogas=":"
2452
2453 # machine
2454 arch_default=$(uname -m)
2455 cpu="generic"
2456
2457 # OS
2458 target_os_default=$(tolower $(uname -s))
2459 host_os=$target_os_default
2460
2461 # configurable options
2462 enable $PROGRAM_LIST
2463 enable $DOCUMENT_LIST
2464 enable $EXAMPLE_LIST
2465 enable $(filter_out avresample $LIBRARY_LIST)
2466 enable stripping
2467
2468 enable asm
2469 enable debug
2470 enable doc
2471 enable optimizations
2472 enable runtime_cpudetect
2473 enable safe_bitstream_reader
2474 enable static
2475 enable swscale_alpha
2476
2477 # Enable hwaccels by default.
2478 enable dxva2 vaapi vdpau xvmc
2479
2480 # build settings
2481 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2482 LIBPREF="lib"
2483 LIBSUF=".a"
2484 FULLNAME='$(NAME)$(BUILDSUF)'
2485 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2486 SLIBPREF="lib"
2487 SLIBSUF=".so"
2488 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2489 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2490 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2491 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2492 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2493 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2494
2495 asflags_filter=echo
2496 cflags_filter=echo
2497 ldflags_filter=echo
2498
2499 AS_C='-c'
2500 AS_O='-o $@'
2501 CC_C='-c'
2502 CC_E='-E -o $@'
2503 CC_O='-o $@'
2504 CXX_C='-c'
2505 CXX_O='-o $@'
2506 LD_O='-o $@'
2507 LD_LIB='-l%'
2508 LD_PATH='-L'
2509 HOSTCC_C='-c'
2510 HOSTCC_E='-E -o $@'
2511 HOSTCC_O='-o $@'
2512 HOSTLD_O='-o $@'
2513
2514 host_cflags='-O3'
2515 host_cppflags='-D_ISOC99_SOURCE'
2516 host_libs='-lm'
2517 host_cflags_filter=echo
2518 host_ldflags_filter=echo
2519
2520 target_path='$(CURDIR)'
2521
2522 # since the object filename is not given with the -MM flag, the compiler
2523 # is only able to print the basename, and we must add the path ourselves
2524 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2525 DEPFLAGS='-MM'
2526
2527 # find source path
2528 if test -f configure; then
2529     source_path=.
2530 else
2531     source_path=$(cd $(dirname "$0"); pwd)
2532     echo "$source_path" | grep -q '[[:blank:]]' &&
2533         die "Out of tree builds are impossible with whitespace in source path."
2534     test -e "$source_path/config.h" &&
2535         die "Out of tree builds are impossible with config.h in source dir."
2536 fi
2537
2538 for v in "$@"; do
2539     r=${v#*=}
2540     l=${v%"$r"}
2541     r=$(sh_quote "$r")
2542     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2543 done
2544
2545 find_things(){
2546     thing=$1
2547     pattern=$2
2548     file=$source_path/$3
2549     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2550 }
2551
2552 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2553 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2554 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2555 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2556 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2557 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2558 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2559 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2560 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2561 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2562 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2563
2564 ALL_COMPONENTS="
2565     $BSF_LIST
2566     $DECODER_LIST
2567     $DEMUXER_LIST
2568     $ENCODER_LIST
2569     $FILTER_LIST
2570     $HWACCEL_LIST
2571     $INDEV_LIST
2572     $MUXER_LIST
2573     $OUTDEV_LIST
2574     $PARSER_LIST
2575     $PROTOCOL_LIST
2576 "
2577
2578 for n in $COMPONENT_LIST; do
2579     v=$(toupper ${n%s})_LIST
2580     eval enable \$$v
2581     eval ${n}_if_any="\$$v"
2582 done
2583
2584 enable $ARCH_EXT_LIST
2585
2586 die_unknown(){
2587     echo "Unknown option \"$1\"."
2588     echo "See $0 --help for available options."
2589     exit 1
2590 }
2591
2592 print_3_columns() {
2593     cat | tr ' ' '\n' | sort | pr -r -3 -t
2594 }
2595
2596 show_list() {
2597     suffix=_$1
2598     shift
2599     echo $* | sed s/$suffix//g | print_3_columns
2600     exit 0
2601 }
2602
2603 rand_list(){
2604     IFS=', '
2605     set -- $*
2606     unset IFS
2607     for thing; do
2608         comp=${thing%:*}
2609         prob=${thing#$comp}
2610         prob=${prob#:}
2611         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2612         echo "prob ${prob:-0.5}"
2613         printf '%s\n' $comp
2614     done
2615 }
2616
2617 do_random(){
2618     action=$1
2619     shift
2620     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2621     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2622 }
2623
2624 for opt do
2625     optval="${opt#*=}"
2626     case "$opt" in
2627         --extra-ldflags=*)
2628             add_ldflags $optval
2629         ;;
2630         --extra-libs=*)
2631             add_extralibs $optval
2632         ;;
2633         --disable-devices)
2634             disable $INDEV_LIST $OUTDEV_LIST
2635         ;;
2636         --enable-debug=*)
2637             debuglevel="$optval"
2638         ;;
2639         --disable-programs)
2640             disable $PROGRAM_LIST
2641         ;;
2642         --disable-everything)
2643             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2644         ;;
2645         --disable-all)
2646             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2647             disable $LIBRARY_LIST $PROGRAM_LIST doc
2648         ;;
2649         --enable-random|--disable-random)
2650             action=${opt%%-random}
2651             do_random ${action#--} $COMPONENT_LIST
2652         ;;
2653         --enable-random=*|--disable-random=*)
2654             action=${opt%%-random=*}
2655             do_random ${action#--} $optval
2656         ;;
2657         --enable-*=*|--disable-*=*)
2658             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2659             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2660             eval list=\$$(toupper $thing)_LIST
2661             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2662             list=$(filter "$name" $list)
2663             [ "$list" = "" ] && warn "Option $opt did not match anything"
2664             $action $list
2665         ;;
2666         --enable-?*|--disable-?*)
2667             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2668             if is_in $option $COMPONENT_LIST; then
2669                 test $action = disable && action=unset
2670                 eval $action \$$(toupper ${option%s})_LIST
2671             elif is_in $option $CMDLINE_SELECT; then
2672                 $action $option
2673             else
2674                 die_unknown $opt
2675             fi
2676         ;;
2677         --list-*)
2678             NAME="${opt#--list-}"
2679             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2680             NAME=${NAME%s}
2681             eval show_list $NAME \$$(toupper $NAME)_LIST
2682         ;;
2683         --help|-h) show_help
2684         ;;
2685         --fatal-warnings) enable fatal_warnings
2686         ;;
2687         *)
2688             optname="${opt%%=*}"
2689             optname="${optname#--}"
2690             optname=$(echo "$optname" | sed 's/-/_/g')
2691             if is_in $optname $CMDLINE_SET; then
2692                 eval $optname='$optval'
2693             elif is_in $optname $CMDLINE_APPEND; then
2694                 append $optname "$optval"
2695             else
2696                 die_unknown $opt
2697             fi
2698         ;;
2699     esac
2700 done
2701
2702 disabled logging && logfile=/dev/null
2703
2704 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2705 set >> $logfile
2706
2707 test -n "$cross_prefix" && enable cross_compile
2708
2709 if enabled cross_compile; then
2710     test -n "$arch" && test -n "$target_os" ||
2711         die "Must specify target arch and OS when cross-compiling"
2712 fi
2713
2714 ar_default="${cross_prefix}${ar_default}"
2715 cc_default="${cross_prefix}${cc_default}"
2716 cxx_default="${cross_prefix}${cxx_default}"
2717 nm_default="${cross_prefix}${nm_default}"
2718 pkg_config_default="${cross_prefix}${pkg_config_default}"
2719 ranlib="${cross_prefix}${ranlib}"
2720 strip_default="${cross_prefix}${strip_default}"
2721 windres_default="${cross_prefix}${windres_default}"
2722
2723 sysinclude_default="${sysroot}/usr/include"
2724
2725 test -n "$valgrind" && toolchain="valgrind-memcheck"
2726
2727 case "$toolchain" in
2728     clang-asan)
2729         cc_default="clang"
2730         add_cflags  -fsanitize=address
2731         add_ldflags -fsanitize=address
2732     ;;
2733     clang-tsan)
2734         cc_default="clang"
2735         add_cflags  -fsanitize=thread -pie
2736         add_ldflags -fsanitize=thread -pie
2737     ;;
2738     gcc-asan)
2739         cc_default="gcc"
2740         add_cflags  -fsanitize=address
2741         add_ldflags -fsanitize=address
2742     ;;
2743     gcc-tsan)
2744         cc_default="gcc"
2745         add_cflags  -fsanitize=thread -pie -fPIC
2746         add_ldflags -fsanitize=thread -pie -fPIC
2747     ;;
2748     valgrind-massif)
2749         target_exec_default=${valgrind:-"valgrind"}
2750         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"
2751     ;;
2752     valgrind-memcheck)
2753         target_exec_default=${valgrind:-"valgrind"}
2754         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2755     ;;
2756     msvc)
2757         # Check whether the current MSVC version needs the C99 converter.
2758         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2759         # support enough of C99 to build ffmpeg. Default to the new
2760         # behaviour if the regexp was unable to match anything, since this
2761         # successfully parses the version number of existing supported
2762         # versions that require the converter (MSVC 2010 and 2012).
2763         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2764         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2765             cc_default="cl"
2766         else
2767             cc_default="c99wrap cl"
2768         fi
2769         ld_default="link"
2770         nm_default="dumpbin -symbols"
2771         ar_default="lib"
2772         target_os_default="win32"
2773         # Use a relative path for TMPDIR. This makes sure all the
2774         # ffconf temp files are written with a relative path, avoiding
2775         # issues with msys/win32 path conversion for MSVC parameters
2776         # such as -Fo<file> or -out:<file>.
2777         TMPDIR=.
2778     ;;
2779     icl)
2780         cc_default="icl"
2781         ld_default="xilink"
2782         nm_default="dumpbin -symbols"
2783         ar_default="xilib"
2784         target_os_default="win32"
2785         TMPDIR=.
2786     ;;
2787     gcov)
2788         add_cflags  -fprofile-arcs -ftest-coverage
2789         add_ldflags -fprofile-arcs -ftest-coverage
2790     ;;
2791     hardened)
2792         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2793         add_ldflags -Wl,-z,relro -Wl,-z,now
2794     ;;
2795     ?*)
2796         die "Unknown toolchain $toolchain"
2797     ;;
2798 esac
2799
2800 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2801 enabled cross_compile || host_cc_default=$cc
2802 set_default host_cc
2803
2804 if ! $pkg_config --version >/dev/null 2>&1; then
2805     warn "$pkg_config not found, library detection may fail."
2806     pkg_config=false
2807 fi
2808
2809 exesuf() {
2810     case $1 in
2811         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2812     esac
2813 }
2814
2815 EXESUF=$(exesuf $target_os)
2816 HOSTEXESUF=$(exesuf $host_os)
2817
2818 # set temporary file name
2819 : ${TMPDIR:=$TEMPDIR}
2820 : ${TMPDIR:=$TMP}
2821 : ${TMPDIR:=/tmp}
2822
2823 if [ -n "$tempprefix" ] ; then
2824     mktemp(){
2825         echo $tempprefix.${HOSTNAME}.${UID}
2826     }
2827 elif ! check_cmd mktemp -u XXXXXX; then
2828     # simple replacement for missing mktemp
2829     # NOT SAFE FOR GENERAL USE
2830     mktemp(){
2831         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2832     }
2833 fi
2834
2835 tmpfile(){
2836     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2837         (set -C; exec > $tmp) 2>/dev/null ||
2838         die "Unable to create temporary file in $TMPDIR."
2839     append TMPFILES $tmp
2840     eval $1=$tmp
2841 }
2842
2843 trap 'rm -f -- $TMPFILES' EXIT
2844
2845 tmpfile TMPASM .asm
2846 tmpfile TMPC   .c
2847 tmpfile TMPCPP .cpp
2848 tmpfile TMPE   $EXESUF
2849 tmpfile TMPH   .h
2850 tmpfile TMPO   .o
2851 tmpfile TMPS   .S
2852 tmpfile TMPSH  .sh
2853 tmpfile TMPV   .ver
2854
2855 unset -f mktemp
2856
2857 chmod +x $TMPE
2858
2859 # make sure we can execute files in $TMPDIR
2860 cat > $TMPSH 2>> $logfile <<EOF
2861 #! /bin/sh
2862 EOF
2863 chmod +x $TMPSH >> $logfile 2>&1
2864 if ! $TMPSH >> $logfile 2>&1; then
2865     cat <<EOF
2866 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2867 variable to another directory and make sure that it is not mounted noexec.
2868 EOF
2869     die "Sanity test failed."
2870 fi
2871
2872 ccc_flags(){
2873     for flag; do
2874         case $flag in
2875             -std=c99)           echo -c99                       ;;
2876             -mcpu=*)            echo -arch ${flag#*=}           ;;
2877             -mieee)             echo -ieee                      ;;
2878             -O*|-fast)          echo $flag                      ;;
2879             -fno-math-errno)    echo -assume nomath_errno       ;;
2880             -g)                 echo -g3                        ;;
2881             -Wall)              echo -msg_enable level2         ;;
2882             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2883             -Wl,*)              echo $flag                      ;;
2884             -f*|-W*)                                            ;;
2885             *)                  echo $flag                      ;;
2886         esac
2887    done
2888 }
2889
2890 cparser_flags(){
2891     for flag; do
2892         case $flag in
2893             -Wno-switch)             echo -Wno-switch-enum ;;
2894             -Wno-format-zero-length) ;;
2895             -Wdisabled-optimization) ;;
2896             -Wno-pointer-sign)       echo -Wno-other ;;
2897             *)                       echo $flag ;;
2898         esac
2899     done
2900 }
2901
2902 msvc_common_flags(){
2903     for flag; do
2904         case $flag in
2905             # In addition to specifying certain flags under the compiler
2906             # specific filters, they must be specified here as well or else the
2907             # generic catch all at the bottom will print the original flag.
2908             -Wall)                ;;
2909             -std=c99)             ;;
2910             # Common flags
2911             -fomit-frame-pointer) ;;
2912             -g)                   echo -Z7 ;;
2913             -fno-math-errno)      ;;
2914             -fno-common)          ;;
2915             -fno-signed-zeros)    ;;
2916             -fPIC)                ;;
2917             -mthumb)              ;;
2918             -march=*)             ;;
2919             -lz)                  echo zlib.lib ;;
2920             -lavifil32)           echo vfw32.lib ;;
2921             -lavicap32)           echo vfw32.lib user32.lib ;;
2922             -l*)                  echo ${flag#-l}.lib ;;
2923             *)                    echo $flag ;;
2924         esac
2925     done
2926 }
2927
2928 msvc_flags(){
2929     msvc_common_flags "$@"
2930     for flag; do
2931         case $flag in
2932             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2933                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2934                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2935                                        -wd4554 \
2936                                        -wd4273 ;;
2937         esac
2938     done
2939 }
2940
2941 icl_flags(){
2942     msvc_common_flags "$@"
2943     for flag; do
2944         case $flag in
2945             # Despite what Intel's documentation says -Wall, which is supported
2946             # on Windows, does enable remarks so disable them here.
2947             -Wall)                echo $flag -Qdiag-disable:remark ;;
2948             -std=c99)             echo -Qstd=c99 ;;
2949         esac
2950     done
2951 }
2952
2953 pgi_flags(){
2954     for flag; do
2955         case $flag in
2956             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2957             -fomit-frame-pointer) echo -Mnoframe ;;
2958             -g)                   echo -gopt ;;
2959             *)                    echo $flag ;;
2960         esac
2961     done
2962 }
2963
2964 suncc_flags(){
2965     for flag; do
2966         case $flag in
2967             -march=*|-mcpu=*)
2968                 case "${flag#*=}" in
2969                     native)                   echo -xtarget=native       ;;
2970                     v9|niagara)               echo -xarch=sparc          ;;
2971                     ultrasparc)               echo -xarch=sparcvis       ;;
2972                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2973                     i586|pentium)             echo -xchip=pentium        ;;
2974                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2975                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2976                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2977                     pentium4*)          echo -xtarget=pentium4           ;;
2978                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2979                     *-sse3)             echo -xarch=sse3                 ;;
2980                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2981                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2982                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2983                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2984                     bdver*)                    echo -xarch=avx           ;;
2985                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2986                     k8|opteron|athlon64|athlon-fx)
2987                                                echo -xarch=sse2a         ;;
2988                     athlon*)                   echo -xarch=pentium_proa  ;;
2989                 esac
2990                 ;;
2991             -std=c99)             echo -xc99              ;;
2992             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2993             -fPIC)                echo -KPIC -xcode=pic32 ;;
2994             -W*,*)                echo $flag              ;;
2995             -f*-*|-W*|-mimpure-text)                      ;;
2996             -shared)              echo -G                 ;;
2997             *)                    echo $flag              ;;
2998         esac
2999     done
3000 }
3001
3002 tms470_flags(){
3003     for flag; do
3004         case $flag in
3005             -march=*|-mcpu=*)
3006                 case "${flag#*=}" in
3007                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3008                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3009                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3010                     armv6*|arm11*)          echo -mv=6   ;;
3011                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3012                                             echo -mv=5e  ;;
3013                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3014                 esac
3015                 ;;
3016             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3017             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3018             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3019             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3020             -msoft-float)   echo --float_support=vfplib       ;;
3021             -O[0-3]|-mf=*)  echo $flag                        ;;
3022             -g)             echo -g -mn                       ;;
3023             -pds=*)         echo $flag                        ;;
3024             -D*|-I*)        echo $flag                        ;;
3025             --gcc|--abi=*)  echo $flag                        ;;
3026             -me)            echo $flag                        ;;
3027         esac
3028     done
3029 }
3030
3031 probe_cc(){
3032     pfx=$1
3033     _cc=$2
3034
3035     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3036     unset _ld_o _ldflags _ld_lib _ld_path
3037     unset _depflags _DEPCMD _DEPFLAGS
3038     _flags_filter=echo
3039
3040     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3041         true # no-op to avoid reading stdin in following checks
3042     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3043         _type=llvm_gcc
3044         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3045         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3047         _cflags_speed='-O3'
3048         _cflags_size='-Os'
3049     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3050         _type=gcc
3051         gcc_version=$($_cc --version | head -n1)
3052         gcc_basever=$($_cc -dumpversion)
3053         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3054         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3055         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3056         if ! $_cc -dumpversion | grep -q '^2\.'; then
3057             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3058         fi
3059         _cflags_speed='-O3'
3060         _cflags_size='-Os'
3061     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3062         _type=icc
3063         _ident=$($_cc --version | head -n1)
3064         _depflags='-MMD'
3065         _cflags_speed='-O3'
3066         _cflags_size='-Os'
3067         _cflags_noopt='-O1'
3068     elif $_cc -v 2>&1 | grep -q xlc; then
3069         _type=xlc
3070         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3071         _cflags_speed='-O5'
3072         _cflags_size='-O5 -qcompact'
3073     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3074         _type=ccc
3075         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3076         _DEPFLAGS='-M'
3077         _cflags_speed='-fast'
3078         _cflags_size='-O1'
3079         _flags_filter=ccc_flags
3080     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3081         test -d "$sysroot" || die "No valid sysroot specified."
3082         _type=armcc
3083         _ident=$($_cc --vsn | head -n1)
3084         armcc_conf="$PWD/armcc.conf"
3085         $_cc --arm_linux_configure                 \
3086              --arm_linux_config_file="$armcc_conf" \
3087              --configure_sysroot="$sysroot"        \
3088              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3089              die "Error creating armcc configuration file."
3090         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3091         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3092         as_default="${cross_prefix}gcc"
3093         _depflags='-MMD'
3094         _cflags_speed='-O3'
3095         _cflags_size='-Os'
3096     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3097         _type=tms470
3098         _ident=$($_cc -version | head -n1 | tr -s ' ')
3099         _flags='--gcc --abi=eabi -me'
3100         _cc_e='-ppl -fe=$@'
3101         _cc_o='-fe=$@'
3102         _depflags='-ppa -ppd=$(@:.o=.d)'
3103         _cflags_speed='-O3 -mf=5'
3104         _cflags_size='-O3 -mf=2'
3105         _flags_filter=tms470_flags
3106     elif $_cc -v 2>&1 | grep -q clang; then
3107         _type=clang
3108         _ident=$($_cc --version | head -n1)
3109         _depflags='-MMD'
3110         _cflags_speed='-O3'
3111         _cflags_size='-Os'
3112     elif $_cc -V 2>&1 | grep -q Sun; then
3113         _type=suncc
3114         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3115         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3116         _DEPFLAGS='-xM1 -xc99'
3117         _ldflags='-std=c99'
3118         _cflags_speed='-O5'
3119         _cflags_size='-O5 -xspace'
3120         _flags_filter=suncc_flags
3121     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3122         _type=pathscale
3123         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3124         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3125         _cflags_speed='-O2'
3126         _cflags_size='-Os'
3127         _flags_filter='filter_out -Wdisabled-optimization'
3128     elif $_cc -v 2>&1 | grep -q Open64; then
3129         _type=open64
3130         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3131         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3132         _cflags_speed='-O2'
3133         _cflags_size='-Os'
3134         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3135     elif $_cc -V 2>&1 | grep -q Portland; then
3136         _type=pgi
3137         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3138         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3139         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3140         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3141         _cflags_noopt="-O"
3142         _flags_filter=pgi_flags
3143     elif $_cc 2>&1 | grep -q Microsoft; then
3144         _type=msvc
3145         _ident=$($cc 2>&1 | head -n1)
3146         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3147         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3148         _cflags_speed="-O2"
3149         _cflags_size="-O1"
3150         if $_cc 2>&1 | grep -q Linker; then
3151             _ld_o='-out:$@'
3152         else
3153             _ld_o='-Fe$@'
3154         fi
3155         _cc_o='-Fo$@'
3156         _cc_e='-P -Fi$@'
3157         _flags_filter=msvc_flags
3158         _ld_lib='lib%.a'
3159         _ld_path='-libpath:'
3160         _flags='-nologo'
3161         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3162         if [ $pfx = hostcc ]; then
3163             append _cflags -Dsnprintf=_snprintf
3164         fi
3165         disable stripping
3166     elif $_cc 2>&1 | grep -q Intel; then
3167         _type=icl
3168         _ident=$($cc 2>&1 | head -n1)
3169         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3170         # Not only is O3 broken on 13.x+ but it is slower on all previous
3171         # versions (tested) as well.
3172         _cflags_speed="-O2"
3173         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3174         if $_cc 2>&1 | grep -q Linker; then
3175             _ld_o='-out:$@'
3176         else
3177             _ld_o='-Fe$@'
3178         fi
3179         _cc_o='-Fo$@'
3180         _cc_e='-P'
3181         _flags_filter=icl_flags
3182         _ld_lib='lib%.a'
3183         _ld_path='-libpath:'
3184         # -Qdiag-error to make icl error when seeing certain unknown arguments
3185         _flags='-nologo -Qdiag-error:4044,10157'
3186         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3187         # with MSVC which enables it by default.
3188         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3189         if [ $pfx = hostcc ]; then
3190             append _cflags -Dsnprintf=_snprintf
3191         fi
3192     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3193         _type=cparser
3194         _ident=$($_cc --version | head -n1)
3195         _depflags='-MMD'
3196         _cflags_speed='-O4'
3197         _cflags_size='-O2'
3198         _flags_filter=cparser_flags
3199     fi
3200
3201     eval ${pfx}_type=\$_type
3202     eval ${pfx}_ident=\$_ident
3203 }
3204
3205 set_ccvars(){
3206     eval ${1}_C=\${_cc_c-\${${1}_C}}
3207     eval ${1}_E=\${_cc_e-\${${1}_E}}
3208     eval ${1}_O=\${_cc_o-\${${1}_O}}
3209
3210     if [ -n "$_depflags" ]; then
3211         eval ${1}_DEPFLAGS=\$_depflags
3212     else
3213         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3214         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3215         eval DEP${1}FLAGS=\$_flags
3216     fi
3217 }
3218
3219 probe_cc cc "$cc"
3220 cflags_filter=$_flags_filter
3221 cflags_speed=$_cflags_speed
3222 cflags_size=$_cflags_size
3223 cflags_noopt=$_cflags_noopt
3224 add_cflags $_flags $_cflags
3225 cc_ldflags=$_ldflags
3226 set_ccvars CC
3227
3228 probe_cc hostcc "$host_cc"
3229 host_cflags_filter=$_flags_filter
3230 add_host_cflags  $_flags $_cflags
3231 set_ccvars HOSTCC
3232
3233 test -n "$cc_type" && enable $cc_type ||
3234     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3235
3236 : ${as_default:=$cc}
3237 : ${dep_cc_default:=$cc}
3238 : ${ld_default:=$cc}
3239 : ${host_ld_default:=$host_cc}
3240 set_default ar as dep_cc ld host_ld windres
3241
3242 probe_cc as "$as"
3243 asflags_filter=$_flags_filter
3244 add_asflags $_flags $_cflags
3245 set_ccvars AS
3246
3247 probe_cc ld "$ld"
3248 ldflags_filter=$_flags_filter
3249 add_ldflags $_flags $_ldflags
3250 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3251 LD_O=${_ld_o-$LD_O}
3252 LD_LIB=${_ld_lib-$LD_LIB}
3253 LD_PATH=${_ld_path-$LD_PATH}
3254
3255 probe_cc hostld "$host_ld"
3256 host_ldflags_filter=$_flags_filter
3257 add_host_ldflags $_flags $_ldflags
3258 HOSTLD_O=${_ld_o-$HOSTLD_O}
3259
3260 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3261     probe_cc depcc "$dep_cc"
3262     CCDEP=${_DEPCMD:-$DEPCMD}
3263     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3264     DEPCCFLAGS=$_flags
3265 fi
3266
3267 if $ar 2>&1 | grep -q Microsoft; then
3268     arflags="-nologo"
3269     ar_o='-out:$@'
3270 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3271     arflags="rq"
3272     ar_o='$@'
3273 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3274     arflags='-Xany -r -c'
3275     ar_o='$@'
3276 else
3277     arflags="rc"
3278     ar_o='$@'
3279 fi
3280
3281 add_cflags $extra_cflags
3282 add_cxxflags $extra_cxxflags
3283 add_asflags $extra_cflags
3284
3285 if test -n "$sysroot"; then
3286     case "$cc_type" in
3287         gcc|llvm_gcc|clang)
3288             add_cppflags --sysroot="$sysroot"
3289             add_ldflags --sysroot="$sysroot"
3290         ;;
3291         tms470)
3292             add_cppflags -I"$sysinclude"
3293             add_ldflags  --sysroot="$sysroot"
3294         ;;
3295     esac
3296 fi
3297
3298 if test "$cpu" = host; then
3299     enabled cross_compile &&
3300         die "--cpu=host makes no sense when cross-compiling."
3301
3302     case "$cc_type" in
3303         gcc|llvm_gcc)
3304             check_native(){
3305                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3306                 sed -n "/cc1.*$1=/{
3307                             s/.*$1=\\([^ ]*\\).*/\\1/
3308                             p
3309                             q
3310                         }" $TMPE
3311             }
3312             cpu=$(check_native -march || check_native -mcpu)
3313         ;;
3314     esac
3315
3316     test "${cpu:-host}" = host &&
3317         die "--cpu=host not supported with compiler $cc"
3318 fi
3319
3320 # Deal with common $arch aliases
3321 case "$arch" in
3322     aarch64|arm64)
3323         arch="aarch64"
3324     ;;
3325     arm*|iPad*|iPhone*)
3326         arch="arm"
3327     ;;
3328     mips*|IP*)
3329         arch="mips"
3330     ;;
3331     parisc*|hppa*)
3332         arch="parisc"
3333     ;;
3334     "Power Macintosh"|ppc*|powerpc*)
3335         arch="ppc"
3336     ;;
3337     s390|s390x)
3338         arch="s390"
3339     ;;
3340     sh4|sh)
3341         arch="sh4"
3342     ;;
3343     sun4u|sparc*)
3344         arch="sparc"
3345     ;;
3346     tilegx|tile-gx)
3347         arch="tilegx"
3348     ;;
3349     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3350         arch="x86"
3351     ;;
3352 esac
3353
3354 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3355 enable $arch
3356
3357 # Add processor-specific flags
3358 if enabled aarch64; then
3359
3360     case $cpu in
3361         armv*)
3362             cpuflags="-march=$cpu"
3363         ;;
3364         *)
3365             cpuflags="-mcpu=$cpu"
3366         ;;
3367     esac
3368
3369 elif enabled alpha; then
3370
3371     cpuflags="-mcpu=$cpu"
3372
3373 elif enabled arm; then
3374
3375     check_arm_arch() {
3376         check_cpp_condition stddef.h \
3377             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3378             $cpuflags
3379     }
3380
3381     probe_arm_arch() {
3382         if   check_arm_arch 4;        then echo armv4;
3383         elif check_arm_arch 4T;       then echo armv4t;
3384         elif check_arm_arch 5;        then echo armv5;
3385         elif check_arm_arch 5E;       then echo armv5e;
3386         elif check_arm_arch 5T;       then echo armv5t;
3387         elif check_arm_arch 5TE;      then echo armv5te;
3388         elif check_arm_arch 5TEJ;     then echo armv5te;
3389         elif check_arm_arch 6;        then echo armv6;
3390         elif check_arm_arch 6J;       then echo armv6j;
3391         elif check_arm_arch 6K;       then echo armv6k;
3392         elif check_arm_arch 6Z;       then echo armv6z;
3393         elif check_arm_arch 6ZK;      then echo armv6zk;
3394         elif check_arm_arch 6T2;      then echo armv6t2;
3395         elif check_arm_arch 7;        then echo armv7;
3396         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3397         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3398         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3399         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3400         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3401         fi
3402     }
3403
3404     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3405
3406     case $cpu in
3407         armv*)
3408             cpuflags="-march=$cpu"
3409             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3410         ;;
3411         *)
3412             cpuflags="-mcpu=$cpu"
3413             case $cpu in
3414                 cortex-a*)                               subarch=armv7a  ;;
3415                 cortex-r*)                               subarch=armv7r  ;;
3416                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3417                 arm11*)                                  subarch=armv6   ;;
3418                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3419                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3420                 *)                             subarch=$(probe_arm_arch) ;;
3421             esac
3422         ;;
3423     esac
3424
3425     case "$subarch" in
3426         armv5t*)    enable fast_clz                ;;
3427         armv[6-8]*) enable fast_clz fast_unaligned ;;
3428     esac
3429
3430 elif enabled avr32; then
3431
3432     case $cpu in
3433         ap7[02]0[0-2])
3434             subarch="avr32_ap"
3435             cpuflags="-mpart=$cpu"
3436         ;;
3437         ap)
3438             subarch="avr32_ap"
3439             cpuflags="-march=$cpu"
3440         ;;
3441         uc3[ab]*)
3442             subarch="avr32_uc"
3443             cpuflags="-mcpu=$cpu"
3444         ;;
3445         uc)
3446             subarch="avr32_uc"
3447             cpuflags="-march=$cpu"
3448         ;;
3449     esac
3450
3451 elif enabled bfin; then
3452
3453     cpuflags="-mcpu=$cpu"
3454
3455 elif enabled mips; then
3456
3457     cpuflags="-march=$cpu"
3458
3459     case $cpu in
3460         24kc)
3461             disable mipsfpu
3462             disable mipsdspr1
3463             disable mipsdspr2
3464         ;;
3465         24kf*)
3466             disable mipsdspr1
3467             disable mipsdspr2
3468         ;;
3469         24kec|34kc|1004kc)
3470             disable mipsfpu
3471             disable mipsdspr2
3472         ;;
3473         24kef*|34kf*|1004kf*)
3474             disable mipsdspr2
3475         ;;
3476         74kc)
3477             disable mipsfpu
3478         ;;
3479     esac
3480
3481 elif enabled ppc; then
3482
3483     case $(tolower $cpu) in
3484         601|ppc601|powerpc601)
3485             cpuflags="-mcpu=601"
3486             disable altivec
3487         ;;
3488         603*|ppc603*|powerpc603*)
3489             cpuflags="-mcpu=603"
3490             disable altivec
3491         ;;
3492         604*|ppc604*|powerpc604*)
3493             cpuflags="-mcpu=604"
3494             disable altivec
3495         ;;
3496         g3|75*|ppc75*|powerpc75*)
3497             cpuflags="-mcpu=750"
3498             disable altivec
3499         ;;
3500         g4|745*|ppc745*|powerpc745*)
3501             cpuflags="-mcpu=7450"
3502         ;;
3503         74*|ppc74*|powerpc74*)
3504             cpuflags="-mcpu=7400"
3505         ;;
3506         g5|970|ppc970|powerpc970)
3507             cpuflags="-mcpu=970"
3508         ;;
3509         power[3-7]*)
3510             cpuflags="-mcpu=$cpu"
3511         ;;
3512         cell)
3513             cpuflags="-mcpu=cell"
3514             enable ldbrx
3515         ;;
3516         e500mc)
3517             cpuflags="-mcpu=e500mc"
3518             disable altivec
3519         ;;
3520         e500v2)
3521             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3522             disable altivec
3523         ;;
3524         e500)
3525             cpuflags="-mcpu=8540 -mhard-float"
3526             disable altivec
3527         ;;
3528     esac
3529
3530 elif enabled sparc; then
3531
3532     case $cpu in
3533         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3534             cpuflags="-mcpu=$cpu"
3535             disable vis
3536         ;;
3537         ultrasparc*|niagara[234])
3538             cpuflags="-mcpu=$cpu"
3539         ;;
3540     esac
3541
3542 elif enabled x86; then
3543
3544     case $cpu in
3545         i[345]86|pentium)
3546             cpuflags="-march=$cpu"
3547             disable mmx
3548         ;;
3549         # targets that do NOT support nopl and conditional mov (cmov)
3550         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3551             cpuflags="-march=$cpu"
3552             disable i686
3553         ;;
3554         # targets that do support nopl and conditional mov (cmov)
3555         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3556             cpuflags="-march=$cpu"
3557             enable i686
3558             enable fast_cmov
3559         ;;
3560         # targets that do support conditional mov but on which it's slow
3561         pentium4|pentium4m|prescott|nocona)
3562             cpuflags="-march=$cpu"
3563             enable i686
3564             disable fast_cmov
3565         ;;
3566     esac
3567
3568 fi
3569
3570 if [ "$cpu" != generic ]; then
3571     add_cflags  $cpuflags
3572     add_asflags $cpuflags
3573 fi
3574
3575 # compiler sanity check
3576 check_exec <<EOF
3577 int main(void){ return 0; }
3578 EOF
3579 if test "$?" != 0; then
3580     echo "$cc is unable to create an executable file."
3581     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3582         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3583         echo "Only do this if you know what cross compiling means."
3584     fi
3585     die "C compiler test failed."
3586 fi
3587
3588 add_cppflags -D_ISOC99_SOURCE
3589 add_cxxflags -D__STDC_CONSTANT_MACROS
3590 check_cflags -std=c99
3591 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3592 #include <stdlib.h>
3593 EOF
3594 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3595 #include <stdlib.h>
3596 EOF
3597
3598 check_host_cflags -std=c99
3599 check_host_cflags -Wall
3600
3601 check_64bit(){
3602     arch32=$1
3603     arch64=$2
3604     expr=$3
3605     check_code cc "" "int test[2*($expr) - 1]" &&
3606         subarch=$arch64 || subarch=$arch32
3607 }
3608
3609 case "$arch" in
3610     aarch64|alpha|ia64)
3611         spic=$shared
3612     ;;
3613     mips)
3614         check_64bit mips mips64 '_MIPS_SIM > 1'
3615         spic=$shared
3616     ;;
3617     parisc)
3618         check_64bit parisc parisc64 'sizeof(void *) > 4'
3619         spic=$shared
3620     ;;
3621     ppc)
3622         check_64bit ppc ppc64 'sizeof(void *) > 4'
3623         spic=$shared
3624     ;;
3625     sparc)
3626         check_64bit sparc sparc64 'sizeof(void *) > 4'
3627         spic=$shared
3628     ;;
3629     x86)
3630         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3631         if test "$subarch" = "x86_64"; then
3632             spic=$shared
3633         fi
3634     ;;
3635     ppc)
3636         check_cc <<EOF && subarch="ppc64"
3637         int test[(int)sizeof(char*) - 7];
3638 EOF
3639     ;;
3640 esac
3641
3642 enable $subarch
3643 enabled spic && enable_weak pic
3644
3645 # OS specific
3646 case $target_os in
3647     aix)
3648         SHFLAGS=-shared
3649         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3650         enabled shared && add_ldflags -Wl,-brtl
3651         ;;
3652     haiku)
3653         prefix_default="/boot/common"
3654         network_extralibs="-lnetwork"
3655         host_libs=
3656         ;;
3657     sunos)
3658         SHFLAGS='-shared -Wl,-h,$$(@F)'
3659         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3660         network_extralibs="-lsocket -lnsl"
3661         # When using suncc to build, the Solaris linker will mark
3662         # an executable with each instruction set encountered by
3663         # the Solaris assembler.  As our libraries contain their own
3664         # guards for processor-specific code, instead suppress
3665         # generation of the HWCAPS ELF section on Solaris x86 only.
3666         enabled_all suncc x86 &&
3667             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3668             add_ldflags -Wl,-M,mapfile
3669         nm_default='nm -P -g'
3670         ;;
3671     netbsd)
3672         disable symver
3673         oss_indev_extralibs="-lossaudio"
3674         oss_outdev_extralibs="-lossaudio"
3675         enabled gcc || check_ldflags -Wl,-zmuldefs
3676         ;;
3677     openbsd|bitrig)
3678         disable symver
3679         SHFLAGS='-shared'
3680         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3681         SLIB_INSTALL_LINKS=
3682         oss_indev_extralibs="-lossaudio"
3683         oss_outdev_extralibs="-lossaudio"
3684         ;;
3685     dragonfly)
3686         disable symver
3687         ;;
3688     freebsd)
3689         ;;
3690     bsd/os)
3691         add_extralibs -lpoll -lgnugetopt
3692         strip="strip -d"
3693         ;;
3694     darwin)
3695         gas="gas-preprocessor.pl $cc"
3696         enabled ppc && add_asflags -force_cpusubtype_ALL
3697         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3698         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3699         strip="${strip} -x"
3700         add_ldflags -Wl,-dynamic,-search_paths_first
3701         SLIBSUF=".dylib"
3702         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3703         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3704         objformat="macho"
3705         enabled x86_64 && objformat="macho64"
3706         enabled_any pic shared ||
3707             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3708         ;;
3709     mingw32*)
3710         if test $target_os = "mingw32ce"; then
3711             disable network
3712         else
3713             target_os=mingw32
3714         fi
3715         LIBTARGET=i386
3716         if enabled x86_64; then
3717             LIBTARGET="i386:x86-64"
3718         elif enabled arm; then
3719             LIBTARGET=arm-wince
3720         fi
3721         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3722         check_ldflags -Wl,--nxcompat
3723         check_ldflags -Wl,--dynamicbase
3724         shlibdir_default="$bindir_default"
3725         SLIBPREF=""
3726         SLIBSUF=".dll"
3727         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3728         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3729         dlltool="${cross_prefix}dlltool"
3730         if check_cmd lib.exe -list; then
3731             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3732             if enabled x86_64; then
3733                 LIBTARGET=x64
3734             fi
3735         elif check_cmd $dlltool --version; then
3736             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3737         fi
3738         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3739         SLIB_INSTALL_LINKS=
3740         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3741         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3742         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3743         objformat="win32"
3744         ranlib=:
3745         enable dos_paths
3746         ;;
3747     win32|win64)
3748         disable symver
3749         if enabled shared; then
3750             # Link to the import library instead of the normal static library
3751             # for shared libs.
3752             LD_LIB='%.lib'
3753             # Cannot build both shared and static libs with MSVC or icl.
3754             disable static
3755         fi
3756         shlibdir_default="$bindir_default"
3757         SLIBPREF=""
3758         SLIBSUF=".dll"
3759         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3760         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3761         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3762         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3763         SLIB_INSTALL_LINKS=
3764         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3765         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3766         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3767         objformat="win32"
3768         ranlib=:
3769         enable dos_paths
3770         ;;
3771     cygwin*)
3772         target_os=cygwin
3773         shlibdir_default="$bindir_default"
3774         SLIBPREF="cyg"
3775         SLIBSUF=".dll"
3776         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3777         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3778         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3779         SLIB_INSTALL_LINKS=
3780         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3781         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3782         objformat="win32"
3783         enable dos_paths
3784         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3785         ;;
3786     *-dos|freedos|opendos)
3787         network_extralibs="-lsocket"
3788         objformat="coff"
3789         enable dos_paths
3790         add_cppflags -U__STRICT_ANSI__
3791         ;;
3792     linux)
3793         enable dv1394
3794         ;;
3795     irix*)
3796         target_os=irix
3797         ranlib="echo ignoring ranlib"
3798         ;;
3799     os/2*)
3800         strip="lxlite -CS"
3801         ln_s="cp -f"
3802         objformat="aout"
3803         add_cppflags -D_GNU_SOURCE
3804         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3805         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3806         LIBSUF="_s.a"
3807         SLIBPREF=""
3808         SLIBSUF=".dll"
3809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3811         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3812             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3813             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3814             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3815             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3816             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3817         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3818             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3819         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3820         enable dos_paths
3821         enable_weak os2threads
3822         ;;
3823     gnu/kfreebsd)
3824         add_cppflags -D_BSD_SOURCE
3825         ;;
3826     gnu)
3827         ;;
3828     qnx)
3829         add_cppflags -D_QNX_SOURCE
3830         network_extralibs="-lsocket"
3831         ;;
3832     symbian)
3833         SLIBSUF=".dll"
3834         enable dos_paths
3835         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3836         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3837         add_ldflags -Wl,--target1-abs,--no-undefined \
3838                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3839                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3840         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3841                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3842                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3843         ;;
3844     osf1)
3845         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3846         ;;
3847     minix)
3848         ;;
3849     plan9)
3850         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3851                      -D_REENTRANT_SOURCE        \
3852                      -D_RESEARCH_SOURCE         \
3853                      -DFD_SETSIZE=96            \
3854                      -DHAVE_SOCK_OPTS
3855         add_compat strtod.o strtod=avpriv_strtod
3856         network_extralibs='-lbsd'
3857         exeobjs=compat/plan9/main.o
3858         disable ffserver
3859         cp_f='cp'
3860         ;;
3861     none)
3862         ;;
3863     *)
3864         die "Unknown OS '$target_os'."
3865         ;;
3866 esac
3867
3868 # determine libc flavour
3869
3870 probe_libc(){
3871     pfx=$1
3872     pfx_no_=${pfx%_}
3873     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3874     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3875         eval ${pfx}libc_type=uclibc
3876         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3877     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3878         eval ${pfx}libc_type=glibc
3879         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3880     # MinGW headers can be installed on Cygwin, so check for newlib first.
3881     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3882         eval ${pfx}libc_type=newlib
3883         add_${pfx}cppflags -U__STRICT_ANSI__
3884     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3885     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3886         eval ${pfx}libc_type=mingw64
3887         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3888             add_compat msvcrt/snprintf.o
3889             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3890         fi
3891         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3892         eval test \$${pfx_no_}cc_type = "gcc" &&
3893             add_${pfx}cppflags -D__printf__=__gnu_printf__
3894     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3895          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3896         eval ${pfx}libc_type=mingw32
3897         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3898             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3899             die "ERROR: MinGW32 runtime version must be >= 3.15."
3900         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3901         eval test \$${pfx_no_}cc_type = "gcc" &&
3902             add_${pfx}cppflags -D__printf__=__gnu_printf__
3903     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3904         eval ${pfx}libc_type=msvcrt
3905         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3906         # 0x601 by default unless something else is set by the user.
3907         # This can easily lead to us detecting functions only present
3908         # in such new versions and producing binaries requiring windows 7.0.
3909         # Therefore explicitly set the default to XP unless the user has
3910         # set something else on the command line.
3911         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3912             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3913     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3914         eval ${pfx}libc_type=klibc
3915     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3916         eval ${pfx}libc_type=bionic
3917     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3918         eval ${pfx}libc_type=solaris
3919         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3920     fi
3921 }
3922
3923 probe_libc
3924 test -n "$libc_type" && enable libc_$libc_type
3925 probe_libc host_
3926 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3927
3928 case $libc_type in
3929     bionic)
3930         add_compat strtod.o strtod=avpriv_strtod
3931         ;;
3932     msvcrt)
3933         add_compat strtod.o strtod=avpriv_strtod
3934         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3935                                      _snprintf=avpriv_snprintf  \
3936                                      vsnprintf=avpriv_vsnprintf
3937         ;;
3938 esac
3939
3940 # hacks for compiler/libc/os combinations
3941
3942 if enabled_all tms470 libc_glibc; then
3943     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3944     add_cppflags -D__USER_LABEL_PREFIX__=
3945     add_cppflags -D__builtin_memset=memset
3946     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3947     add_cflags   -pds=48    # incompatible redefinition of macro
3948 fi
3949
3950 if enabled_all ccc libc_glibc; then
3951     add_ldflags -Wl,-z,now  # calls to libots crash without this
3952 fi
3953
3954 esc(){
3955     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3956 }
3957
3958 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3959
3960 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3961
3962 set_default $PATHS_LIST
3963 set_default nm
3964
3965 # we need to build at least one lib type
3966 if ! enabled_any static shared; then
3967     cat <<EOF
3968 At least one library type must be built.
3969 Specify --enable-static to build the static libraries or --enable-shared to
3970 build the shared libraries as well. To only build the shared libraries specify
3971 --disable-static in addition to --enable-shared.
3972 EOF
3973     exit 1;
3974 fi
3975
3976 # backward compatibility layer for incompatible_libav/fork_abi
3977 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3978 enabled incompatible_libav_abi && enable incompatible_fork_abi
3979
3980 die_license_disabled() {
3981     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3982 }
3983
3984 die_license_disabled_gpl() {
3985     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3986 }
3987
3988 die_license_disabled gpl frei0r
3989 die_license_disabled gpl libcdio
3990 die_license_disabled gpl libutvideo
3991 die_license_disabled gpl libvidstab
3992 die_license_disabled gpl libx264
3993 die_license_disabled gpl libxavs
3994 die_license_disabled gpl libxvid
3995 die_license_disabled gpl libzvbi
3996 die_license_disabled gpl x11grab
3997
3998 die_license_disabled nonfree libaacplus
3999 die_license_disabled nonfree libfaac
4000 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4001 enabled gpl && die_license_disabled_gpl nonfree openssl
4002
4003 die_license_disabled version3 libopencore_amrnb
4004 die_license_disabled version3 libopencore_amrwb
4005 die_license_disabled version3 libvo_aacenc
4006 die_license_disabled version3 libvo_amrwbenc
4007
4008 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4009
4010 disabled optimizations || check_cflags -fomit-frame-pointer
4011
4012 enable_weak_pic() {
4013     disabled pic && return
4014     enable pic
4015     add_cppflags -DPIC
4016     case "$target_os" in
4017     mingw*|cygwin*)
4018         ;;
4019     *)
4020         add_cflags -fPIC
4021         ;;
4022     esac
4023     add_asflags  -fPIC
4024 }
4025
4026 enabled pic && enable_weak_pic
4027
4028 check_cc <<EOF || die "Symbol mangling check failed."
4029 int ff_extern;
4030 EOF
4031 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4032 extern_prefix=${sym%%ff_extern*}
4033
4034 check_cc <<EOF && enable_weak inline_asm
4035 void foo(void) { __asm__ volatile ("" ::); }
4036 EOF
4037
4038 _restrict=
4039 for restrict_keyword in restrict __restrict__ __restrict; do
4040     check_cc <<EOF && _restrict=$restrict_keyword && break
4041 void foo(char * $restrict_keyword p);
4042 EOF
4043 done
4044
4045 check_cc <<EOF && enable pragma_deprecated
4046 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4047 EOF
4048
4049 check_cc <<EOF && enable attribute_packed
4050 struct { int x; } __attribute__((packed)) x;
4051 EOF
4052
4053 check_cc <<EOF && enable attribute_may_alias
4054 union { int x; } __attribute__((may_alias)) x;
4055 EOF
4056
4057 check_cc <<EOF || die "endian test failed"
4058 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4059 EOF
4060 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4061
4062 check_inline_asm inline_asm_labels '"1:\n"'
4063
4064 if enabled aarch64; then
4065     # internal assembler in clang 3.3 does not support this instruction
4066     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4067     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4068
4069     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4070
4071 elif enabled alpha; then
4072
4073     check_cflags -mieee
4074
4075 elif enabled arm; then
4076
4077     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4078 float func(float a, float b){ return a+b; }
4079 EOF
4080
4081     enabled thumb && check_cflags -mthumb || check_cflags -marm
4082     nogas=die
4083
4084     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4085         enable vfp_args
4086     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4087         case "${cross_prefix:-$cc}" in
4088             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4089             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4090 __asm__ (".eabi_attribute 28, 1");
4091 int main(void) { return 0; }
4092 EOF
4093         esac
4094         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4095     fi
4096
4097     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4098     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4099     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4100     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4101     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4102     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4103
4104     [ $target_os = linux ] ||
4105         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4106             $ARCH_EXT_LIST_ARM
4107
4108     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4109     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
4110
4111     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4112
4113 elif enabled mips; then
4114
4115     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4116     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4117      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4118     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4119      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4120     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4121      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4122     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4123      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4124
4125 elif enabled parisc; then
4126
4127     if enabled gcc; then
4128         case $($cc -dumpversion) in
4129             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4130         esac
4131     fi
4132
4133 elif enabled ppc; then
4134
4135     enable local_aligned_8 local_aligned_16
4136
4137     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4138     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4139     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4140     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4141
4142     # AltiVec flags: The FSF version of GCC differs from the Apple version
4143     if enabled altivec; then
4144         if ! enabled_any pic ppc64; then
4145             nogas=warn
4146         fi
4147         check_cflags -maltivec -mabi=altivec &&
4148         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4149         check_cflags -faltivec
4150
4151         # check if our compiler supports Motorola AltiVec C API
4152         check_cc <<EOF || disable altivec
4153 $inc_altivec_h
4154 int main(void) {
4155     vector signed int v1 = (vector signed int) { 0 };
4156     vector signed int v2 = (vector signed int) { 1 };
4157     v1 = vec_add(v1, v2);
4158     return 0;
4159 }
4160 EOF
4161
4162         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4163     fi
4164
4165 elif enabled sparc; then
4166
4167     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4168
4169 elif enabled x86; then
4170
4171     check_builtin rdtsc    intrin.h   "__rdtsc()"
4172     check_builtin mm_empty mmintrin.h "_mm_empty()"
4173
4174     enable local_aligned_8 local_aligned_16
4175
4176     # check whether EBP is available on x86
4177     # As 'i' is stored on the stack, this program will crash
4178     # if the base pointer is used to access it because the
4179     # base pointer is cleared in the inline assembly code.
4180     check_exec_crash <<EOF && enable ebp_available
4181 volatile int i=0;
4182 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4183 return i;
4184 EOF
4185
4186     # check whether EBX is available on x86
4187     check_inline_asm ebx_available '""::"b"(0)' &&
4188         check_inline_asm ebx_available '"":::"%ebx"'
4189
4190     # check whether xmm clobbers are supported
4191     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4192
4193     # check whether binutils is new enough to compile SSSE3/MMXEXT
4194     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4195     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4196
4197     if ! disabled_any asm mmx yasm; then
4198         if check_cmd $yasmexe --version; then
4199             enabled x86_64 && yasm_extra="-m amd64"
4200             yasm_debug="-g dwarf2"
4201         elif check_cmd nasm -v; then
4202             yasmexe=nasm
4203             yasm_debug="-g -F dwarf"
4204             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4205         fi
4206
4207         YASMFLAGS="-f $objformat $yasm_extra"
4208         enabled pic               && append YASMFLAGS "-DPIC"
4209         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4210         case "$objformat" in
4211             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4212         esac
4213
4214         check_yasm "movbe ecx, [5]" && enable yasm ||
4215             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4216         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4217         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4218         check_yasm "CPU amdnop" && enable cpunop
4219     fi
4220
4221     case "$cpu" in
4222         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4223             disable fast_clz
4224         ;;
4225     esac
4226
4227 fi
4228
4229 if enabled asm; then
4230     as=${gas:=$as}
4231     check_as <<EOF && enable gnu_as || \
4232         $nogas "GNU assembler not found, install gas-preprocessor"
4233 .macro m n
4234 \n: .int 0
4235 .endm
4236 m x
4237 EOF
4238 fi
4239
4240 check_ldflags -Wl,--as-needed
4241
4242 if check_func dlopen; then
4243     ldl=
4244 elif check_func dlopen -ldl; then
4245     ldl=-ldl
4246 fi
4247
4248 if ! disabled network; then
4249     check_type "sys/types.h sys/socket.h" socklen_t
4250     check_type netdb.h "struct addrinfo"
4251     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4252     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4253     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4254     check_type netinet/in.h "struct sockaddr_in6"
4255     check_type poll.h "struct pollfd"
4256     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4257     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4258     check_type netinet/sctp.h "struct sctp_event_subscribe"
4259     check_func getaddrinfo $network_extralibs
4260     check_func getservbyport $network_extralibs
4261     # Prefer arpa/inet.h over winsock2
4262     if check_header arpa/inet.h ; then
4263         check_func closesocket
4264     elif check_header winsock2.h ; then
4265         check_func_headers winsock2.h closesocket -lws2 &&
4266             network_extralibs="-lws2" ||
4267         { check_func_headers winsock2.h closesocket -lws2_32 &&
4268             network_extralibs="-lws2_32"; } || disable winsock2_h network
4269         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4270         check_type ws2tcpip.h socklen_t
4271         check_type ws2tcpip.h "struct addrinfo"
4272         check_type ws2tcpip.h "struct group_source_req"
4273         check_type ws2tcpip.h "struct ip_mreq_source"
4274         check_type ws2tcpip.h "struct ipv6_mreq"
4275         check_type winsock2.h "struct pollfd"
4276         check_type ws2tcpip.h "struct sockaddr_in6"
4277         check_type ws2tcpip.h "struct sockaddr_storage"
4278         check_struct winsock2.h "struct sockaddr" sa_len
4279     else
4280         disable network
4281     fi
4282 fi
4283
4284 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4285 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4286
4287 check_func  access
4288 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4289 check_func  fcntl
4290 check_func  fork
4291 check_func_headers stdlib.h getenv
4292 check_func  gethrtime
4293 check_func  getopt
4294 check_func  getrusage
4295 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4296 check_func  gettimeofday
4297 check_func  inet_aton $network_extralibs
4298 check_func  isatty
4299 check_func  localtime_r
4300 check_func  ${malloc_prefix}memalign            && enable memalign
4301 check_func  mkstemp
4302 check_func  mmap
4303 check_func  mprotect
4304 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4305 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4306 check_func  setrlimit
4307 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4308 check_func  strerror_r
4309 check_func  sched_getaffinity
4310 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4311 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4312 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4313 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4314 check_builtin sarestart signal.h "SA_RESTART"
4315 check_func  sysconf
4316 check_func  sysctl
4317 check_func  usleep
4318 check_func_headers conio.h kbhit
4319 check_func_headers windows.h PeekNamedPipe
4320 check_func_headers io.h setmode
4321 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4322 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4323 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4324 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4325 check_func_headers windows.h GetProcessAffinityMask
4326 check_func_headers windows.h GetProcessTimes
4327 check_func_headers windows.h GetSystemTimeAsFileTime
4328 check_func_headers windows.h MapViewOfFile
4329 check_func_headers windows.h SetConsoleTextAttribute
4330 check_func_headers windows.h Sleep
4331 check_func_headers windows.h VirtualAlloc
4332 check_func_headers glob.h glob
4333 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4334
4335 check_header cl/cl.h
4336 check_header direct.h
4337 check_header dlfcn.h
4338 check_header dxva.h
4339 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4340 check_header io.h
4341 check_header libcrystalhd/libcrystalhd_if.h
4342 check_header malloc.h
4343 check_header poll.h
4344 check_header sys/mman.h
4345 check_header sys/param.h
4346 check_header sys/resource.h
4347 check_header sys/select.h
4348 check_header sys/time.h
4349 check_header sys/un.h
4350 check_header termios.h
4351 check_header unistd.h
4352 check_header vdpau/vdpau.h
4353 check_header vdpau/vdpau_x11.h
4354 check_header VideoDecodeAcceleration/VDADecoder.h
4355 check_header windows.h
4356 check_header X11/extensions/XvMClib.h
4357 check_header asm/types.h
4358
4359 if ! disabled w32threads && ! enabled pthreads; then
4360     check_func_headers "windows.h process.h" _beginthreadex &&
4361         enable w32threads || disable w32threads
4362 fi
4363
4364 # check for some common methods of building with pthread support
4365 # do this before the optional library checks as some of them require pthreads
4366 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4367     enable pthreads
4368     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4369         add_cflags -pthread
4370         add_extralibs -pthread
4371     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4372         add_cflags -pthreads
4373         add_extralibs -pthreads
4374     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4375         add_extralibs -lpthreadGC2
4376     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4377         :
4378     elif ! check_func pthread_join && ! check_func pthread_create; then
4379         disable pthreads
4380     fi
4381     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4382 fi
4383
4384 for thread in $THREADS_LIST; do
4385     if enabled $thread; then
4386         test -n "$thread_type" &&
4387             die "ERROR: Only one thread type must be selected." ||
4388             thread_type="$thread"
4389     fi
4390 done
4391
4392 if enabled pthreads; then
4393   check_func pthread_cancel
4394 fi
4395
4396 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4397 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4398
4399 check_lib math.h sin -lm && LIBM="-lm"
4400 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4401
4402 atan2f_args=2
4403 ldexpf_args=2
4404 powf_args=2
4405
4406 for func in $MATH_FUNCS; do
4407     eval check_mathfunc $func \${${func}_args:-1}
4408 done
4409
4410 # these are off by default, so fail if requested and not available
4411 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4412                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4413                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4414 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4415 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4416 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4417 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4418 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4419 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4420 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4421 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4422 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4423                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4424                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4425 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4426 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4427 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4428 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"
4429 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4430 enabled libfreetype       && require_libfreetype
4431 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4432 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4433                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4434                                done || die "ERROR: libgsm not found"; }
4435 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4436 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4437 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4438 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4439 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4440 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4441 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4442 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4443                                check_lib openjpeg.h opj_version -lopenjpeg ||
4444                                die "ERROR: libopenjpeg not found"; }
4445 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4446 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4447 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4448 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4449 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4450 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4451 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4452 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4453 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4454 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4455     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4456     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4457 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4458 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4459                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4460                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4461 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4462 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4463 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4464 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4465 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4466 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4467 enabled libvpx            && {
4468     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4469                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4470     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 ||
4471                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4472     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4473     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4474 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4475 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4476 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4477                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4478                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4479 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4480 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4481 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4482 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4483 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4484                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4485                                die "ERROR: openal not found"; } &&
4486                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4487                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4488 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4489                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4490                                die "ERROR: opencl not found"; } &&
4491                              { ! enabled_any w32threads os2threads ||
4492                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4493                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4494                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4495                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4496 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4497                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4498                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4499                                die "ERROR: openssl not found"; }
4500
4501 if enabled gnutls; then
4502     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4503     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4504 fi
4505
4506 # libdc1394 check
4507 if enabled libdc1394; then
4508     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4509         enable libdc1394_2; } ||
4510     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4511         enable libdc1394_1; } ||
4512     die "ERROR: No version of libdc1394 found "
4513 fi
4514
4515 SDL_CONFIG="${cross_prefix}sdl-config"
4516 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4517     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4518     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4519     enable sdl
4520 else
4521   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4522     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4523     sdl_libs=$("${SDL_CONFIG}" --libs)
4524     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4525     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4526     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4527     enable sdl
4528   fi
4529 fi
4530 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4531
4532 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4533 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4534 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4535 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4536 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4537
4538 check_header linux/fb.h
4539 check_header linux/videodev.h
4540 check_header linux/videodev2.h
4541 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4542
4543 check_header sys/videoio.h
4544
4545 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4546 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4547 # w32api 3.12 had it defined wrong
4548 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4549
4550 check_type "dshow.h" IBaseFilter
4551
4552 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4553 { check_header dev/bktr/ioctl_meteor.h &&
4554   check_header dev/bktr/ioctl_bt848.h; } ||
4555 { check_header machine/ioctl_meteor.h &&
4556   check_header machine/ioctl_bt848.h; } ||
4557 { check_header dev/video/meteor/ioctl_meteor.h &&
4558   check_header dev/video/bktr/ioctl_bt848.h; } ||
4559 check_header dev/ic/bt8xx.h
4560
4561 check_header sndio.h
4562 if check_struct sys/soundcard.h audio_buf_info bytes; then
4563     enable_safe sys/soundcard.h
4564 else
4565     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4566     #include <sys/soundcard.h>
4567     audio_buf_info abc;
4568 EOF
4569 fi
4570 check_header soundcard.h
4571
4572 enabled_any alsa_indev alsa_outdev &&
4573     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4574
4575 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4576     check_func jack_port_get_latency_range -ljack
4577
4578 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4579
4580 if enabled libcdio; then
4581     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4582     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4583     die "ERROR: libcdio-paranoia not found"
4584 fi
4585
4586 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4587
4588 enabled x11grab                                           &&
4589 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4590 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4591 { enabled xlib || die "ERROR: Xlib not found"; }
4592
4593 enabled vaapi &&
4594     check_lib va/va.h vaInitialize -lva ||
4595     disable vaapi
4596
4597 enabled vdpau &&
4598     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4599     disable vdpau
4600
4601 enabled vdpau && enabled xlib &&
4602     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4603     enable vdpau_x11
4604
4605 # Funny iconv installations are not unusual, so check it after all flags have been set
4606 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4607
4608 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4609
4610 # add some useful compiler flags if supported
4611 check_cflags -Wdeclaration-after-statement
4612 check_cflags -Wall
4613 check_cflags -Wdisabled-optimization
4614 check_cflags -Wpointer-arith
4615 check_cflags -Wredundant-decls
4616 check_cflags -Wwrite-strings
4617 check_cflags -Wtype-limits
4618 check_cflags -Wundef
4619 check_cflags -Wmissing-prototypes
4620 check_cflags -Wno-pointer-to-int-cast
4621 check_cflags -Wstrict-prototypes
4622 enabled extra_warnings && check_cflags -Winline
4623
4624 check_disable_warning(){
4625     warning_flag=-W${1#-Wno-}
4626     test_cflags $warning_flag && add_cflags $1
4627 }
4628
4629 check_disable_warning -Wno-parentheses
4630 check_disable_warning -Wno-switch
4631 check_disable_warning -Wno-format-zero-length
4632 check_disable_warning -Wno-pointer-sign
4633
4634 # add some linker flags
4635 check_ldflags -Wl,--warn-common
4636 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4637 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4638 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4639
4640 # add some strip flags
4641 # -wN '..@*' is more selective than -x, but not available everywhere.
4642 check_stripflags -wN \'..@*\' || check_stripflags -x
4643
4644 enabled neon_clobber_test &&
4645     check_ldflags -Wl,--wrap,avcodec_open2              \
4646                   -Wl,--wrap,avcodec_decode_audio4      \
4647                   -Wl,--wrap,avcodec_decode_video2      \
4648                   -Wl,--wrap,avcodec_decode_subtitle2   \
4649                   -Wl,--wrap,avcodec_encode_audio2      \
4650                   -Wl,--wrap,avcodec_encode_video2      \
4651                   -Wl,--wrap,avcodec_encode_subtitle    \
4652                   -Wl,--wrap,swr_convert                \
4653                   -Wl,--wrap,avresample_convert ||
4654     disable neon_clobber_test
4655
4656 enabled xmm_clobber_test &&
4657     check_ldflags -Wl,--wrap,avcodec_open2              \
4658                   -Wl,--wrap,avcodec_decode_audio4      \
4659                   -Wl,--wrap,avcodec_decode_video2      \
4660                   -Wl,--wrap,avcodec_decode_subtitle2   \
4661                   -Wl,--wrap,avcodec_encode_audio2      \
4662                   -Wl,--wrap,avcodec_encode_video       \
4663                   -Wl,--wrap,avcodec_encode_video2      \
4664                   -Wl,--wrap,avcodec_encode_subtitle    \
4665                   -Wl,--wrap,swr_convert                \
4666                   -Wl,--wrap,avresample_convert         \
4667                   -Wl,--wrap,sws_scale ||
4668     disable xmm_clobber_test
4669
4670 echo "X{};" > $TMPV
4671 if test_ldflags -Wl,--version-script,$TMPV; then
4672     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4673     check_cc <<EOF && enable symver_asm_label
4674 void ff_foo(void) __asm__ ("av_foo@VERSION");
4675 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4676 EOF
4677     check_cc <<EOF && enable symver_gnu_asm
4678 __asm__(".symver ff_foo,av_foo@VERSION");
4679 void ff_foo(void) {}
4680 EOF
4681 fi
4682
4683 if [ -z "$optflags" ]; then
4684     if enabled small; then
4685         optflags=$cflags_size
4686     elif enabled optimizations; then
4687         optflags=$cflags_speed
4688     else
4689         optflags=$cflags_noopt
4690     fi
4691 fi
4692
4693 check_optflags(){
4694     check_cflags "$@"
4695     enabled lto && check_ldflags "$@"
4696 }
4697
4698
4699 if enabled lto; then
4700     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4701     check_cflags  -flto
4702     check_ldflags -flto $cpuflags
4703 fi
4704
4705 check_optflags $optflags
4706 check_optflags -fno-math-errno
4707 check_optflags -fno-signed-zeros
4708
4709 enabled ftrapv && check_cflags -ftrapv
4710
4711 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4712 int x;
4713 EOF
4714
4715
4716 if enabled icc; then
4717     # Just warnings, no remarks
4718     check_cflags -w1
4719     # -wd: Disable following warnings
4720     # 144, 167, 556: -Wno-pointer-sign
4721     # 188: enumerated type mixed with another type
4722     # 1292: attribute "foo" ignored
4723     # 1419: external declaration in primary source file
4724     # 10006: ignoring unknown option -fno-signed-zeros
4725     # 10148: ignoring unknown option -Wno-parentheses
4726     # 10156: ignoring option '-W'; no argument required
4727     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4728     # 11030: Warning unknown option --as-needed
4729     # 10156: ignoring option '-export'; no argument required
4730     check_ldflags -wd10156,11030
4731     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4732     enable ebp_available
4733     if enabled x86_32; then
4734         icc_version=$($cc -dumpversion)
4735         test ${icc_version%%.*} -ge 11 &&
4736             check_cflags -falign-stack=maintain-16-byte ||
4737             disable aligned_stack
4738     fi
4739 elif enabled ccc; then
4740     # disable some annoying warnings
4741     add_cflags -msg_disable bitnotint
4742     add_cflags -msg_disable mixfuncvoid
4743     add_cflags -msg_disable nonstandcast
4744     add_cflags -msg_disable unsupieee
4745 elif enabled gcc; then
4746     check_optflags -fno-tree-vectorize
4747     check_cflags -Werror=implicit-function-declaration
4748     check_cflags -Werror=missing-prototypes
4749     check_cflags -Werror=return-type
4750     check_cflags -Werror=vla
4751     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4752 elif enabled llvm_gcc; then
4753     check_cflags -mllvm -stack-alignment=16
4754 elif enabled clang; then
4755     check_cflags -mllvm -stack-alignment=16
4756     check_cflags -Qunused-arguments
4757     check_cflags -Werror=implicit-function-declaration
4758     check_cflags -Werror=missing-prototypes
4759     check_cflags -Werror=return-type
4760 elif enabled cparser; then
4761     add_cflags -Wno-missing-variable-declarations
4762     add_cflags -Wno-empty-statement
4763 elif enabled armcc; then
4764     # 2523: use of inline assembler is deprecated
4765     add_cflags -W${armcc_opt},--diag_suppress=2523
4766     add_cflags -W${armcc_opt},--diag_suppress=1207
4767     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4768     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4769     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4770     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4771 elif enabled tms470; then
4772     add_cflags -pds=824 -pds=837
4773     disable inline_asm
4774 elif enabled pathscale; then
4775     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4776 elif enabled_any msvc icl; then
4777     enabled x86_32 && disable aligned_stack
4778     enabled_all x86_32 debug && add_cflags -Oy-
4779     enabled debug && add_ldflags -debug
4780     enable pragma_deprecated
4781     if enabled icl; then
4782         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4783         # (correctly) on icl 13.x.
4784         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4785             add_cflags -Qansi-alias
4786         # icl will pass the inline asm tests but inline asm is currently
4787         # not supported (build will fail)
4788         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4789         disable inline_asm
4790     fi
4791 fi
4792
4793 case $target_os in
4794     osf1)
4795         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4796     ;;
4797     plan9)
4798         add_cppflags -Dmain=plan9_main
4799     ;;
4800 esac
4801
4802 enable frame_thread_encoder
4803
4804 enabled asm || { arch=c; disa