Merge commit '36e3b1f2fd262028834a9d7b1eb533c1218ee6c2'
[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     pkg="$1"
1036     headers="$2"
1037     funcs="$3"
1038     shift 3
1039     check_cmd $pkg_config --exists --print-errors $pkg || return
1040     pkg_cflags=$($pkg_config --cflags $pkg)
1041     pkg_libs=$($pkg_config --libs $pkg)
1042     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1043         set_safe ${pkg}_cflags $pkg_cflags   &&
1044         set_safe ${pkg}_libs   $pkg_libs
1045 }
1046
1047 check_exec(){
1048     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1049 }
1050
1051 check_exec_crash(){
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_safe "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_safe "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_safe "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1109 }
1110
1111 require(){
1112     name="$1"
1113     header="$2"
1114     func="$3"
1115     shift 3
1116     check_lib $header $func "$@" || die "ERROR: $name not found"
1117 }
1118
1119 require2(){
1120     name="$1"
1121     headers="$2"
1122     func="$3"
1123     shift 3
1124     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1125 }
1126
1127 require_cpp(){
1128     name="$1"
1129     headers="$2"
1130     classes="$3"
1131     shift 3
1132     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1133 }
1134
1135 require_pkg_config(){
1136     pkg="$1"
1137     check_pkg_config "$@" || die "ERROR: $pkg not found"
1138     add_cflags    $(get_safe ${pkg}_cflags)
1139     add_extralibs $(get_safe ${pkg}_libs)
1140 }
1141
1142 require_libfreetype(){
1143     log require_libfreetype "$@"
1144     pkg="freetype2"
1145     check_cmd $pkg_config --exists --print-errors $pkg \
1146       || die "ERROR: $pkg not found"
1147     pkg_cflags=$($pkg_config --cflags $pkg)
1148     pkg_libs=$($pkg_config --libs $pkg)
1149     {
1150         echo "#include <ft2build.h>"
1151         echo "#include FT_FREETYPE_H"
1152         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" $pkg_cflags $pkg_libs \
1155       && set_safe ${pkg}_cflags $pkg_cflags \
1156       && set_safe ${pkg}_libs   $pkg_libs \
1157       || die "ERROR: $pkg not found"
1158     add_cflags    $(get_safe ${pkg}_cflags)
1159     add_extralibs $(get_safe ${pkg}_libs)
1160 }
1161
1162 hostcc_e(){
1163     eval printf '%s\\n' $HOSTCC_E
1164 }
1165
1166 hostcc_o(){
1167     eval printf '%s\\n' $HOSTCC_O
1168 }
1169
1170 check_host_cc(){
1171     log check_host_cc "$@"
1172     cat > $TMPC
1173     log_file $TMPC
1174     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1175 }
1176
1177 check_host_cpp(){
1178     log check_host_cpp "$@"
1179     cat > $TMPC
1180     log_file $TMPC
1181     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1182 }
1183
1184 check_host_cppflags(){
1185     log check_host_cppflags "$@"
1186     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1187 int x;
1188 EOF
1189 }
1190
1191 check_host_cflags(){
1192     log check_host_cflags "$@"
1193     set -- $($host_cflags_filter "$@")
1194     check_host_cc "$@" <<EOF && append host_cflags "$@"
1195 int x;
1196 EOF
1197 }
1198
1199 check_host_cpp_condition(){
1200     log check_host_cpp_condition "$@"
1201     header=$1
1202     condition=$2
1203     shift 2
1204     check_host_cpp "$@" <<EOF
1205 #include <$header>
1206 #if !($condition)
1207 #error "unsatisfied condition: $condition"
1208 #endif
1209 EOF
1210 }
1211
1212 apply(){
1213     file=$1
1214     shift
1215     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1216 }
1217
1218 cp_if_changed(){
1219     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1220     mkdir -p "$(dirname $2)"
1221     $cp_f "$1" "$2"
1222 }
1223
1224 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1225 # system-dependent things.
1226
1227 COMPONENT_LIST="
1228     bsfs
1229     decoders
1230     demuxers
1231     encoders
1232     filters
1233     hwaccels
1234     indevs
1235     muxers
1236     outdevs
1237     parsers
1238     protocols
1239 "
1240
1241 EXAMPLE_LIST="
1242     decoding_encoding_example
1243     demuxing_decoding_example
1244     filtering_audio_example
1245     filtering_video_example
1246     metadata_example
1247     muxing_example
1248     resampling_audio_example
1249     scaling_video_example
1250     transcode_aac_example
1251 "
1252
1253 EXTERNAL_LIBRARY_LIST="
1254     avisynth
1255     bzlib
1256     crystalhd
1257     fontconfig
1258     frei0r
1259     gnutls
1260     iconv
1261     ladspa
1262     libaacplus
1263     libass
1264     libbluray
1265     libcaca
1266     libcdio
1267     libcelt
1268     libdc1394
1269     libfaac
1270     libfdk_aac
1271     libflite
1272     libfreetype
1273     libgme
1274     libgsm
1275     libiec61883
1276     libilbc
1277     libmodplug
1278     libmp3lame
1279     libnut
1280     libopencore_amrnb
1281     libopencore_amrwb
1282     libopencv
1283     libopenjpeg
1284     libopus
1285     libpulse
1286     libquvi
1287     librtmp
1288     libschroedinger
1289     libshine
1290     libsoxr
1291     libspeex
1292     libssh
1293     libstagefright_h264
1294     libtheora
1295     libtwolame
1296     libutvideo
1297     libv4l2
1298     libvidstab
1299     libvo_aacenc
1300     libvo_amrwbenc
1301     libvorbis
1302     libvpx
1303     libwavpack
1304     libwebp
1305     libx264
1306     libxavs
1307     libxvid
1308     libzmq
1309     libzvbi
1310     openal
1311     opencl
1312     openssl
1313     x11grab
1314     zlib
1315 "
1316
1317 DOCUMENT_LIST="
1318     doc
1319     htmlpages
1320     manpages
1321     podpages
1322     txtpages
1323 "
1324
1325 HWACCEL_LIST="
1326     dxva2
1327     vaapi
1328     vda
1329     vdpau
1330     xvmc
1331 "
1332
1333 LIBRARY_LIST="
1334     avcodec
1335     avdevice
1336     avfilter
1337     avformat
1338     avresample
1339     avutil
1340     postproc
1341     swresample
1342     swscale
1343 "
1344
1345 PROGRAM_LIST="
1346     ffplay
1347     ffprobe
1348     ffserver
1349     ffmpeg
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $DOCUMENT_LIST
1355     $EXAMPLE_LIST
1356     $EXTERNAL_LIBRARY_LIST
1357     $HWACCEL_LIST
1358     $LIBRARY_LIST
1359     $PROGRAM_LIST
1360     dct
1361     dwt
1362     error_resilience
1363     fast_unaligned
1364     fft
1365     ftrapv
1366     gpl
1367     gray
1368     hardcoded_tables
1369     incompatible_libav_abi
1370     incompatible_fork_abi
1371     lsp
1372     lzo
1373     mdct
1374     memalign_hack
1375     memory_poisoning
1376     neon_clobber_test
1377     network
1378     nonfree
1379     pic
1380     raise_major
1381     rdft
1382     runtime_cpudetect
1383     safe_bitstream_reader
1384     shared
1385     small
1386     sram
1387     static
1388     swscale_alpha
1389     thumb
1390     version3
1391     xmm_clobber_test
1392 "
1393
1394 THREADS_LIST='
1395     pthreads
1396     w32threads
1397     os2threads
1398 '
1399
1400 ATOMICS_LIST='
1401     atomics_gcc
1402     atomics_suncc
1403     atomics_win32
1404 '
1405
1406 ARCH_LIST='
1407     aarch64
1408     alpha
1409     arm
1410     avr32
1411     avr32_ap
1412     avr32_uc
1413     bfin
1414     ia64
1415     m68k
1416     mips
1417     mips64
1418     parisc
1419     ppc
1420     ppc64
1421     s390
1422     sh4
1423     sparc
1424     sparc64
1425     tilegx
1426     tilepro
1427     tomi
1428     x86
1429     x86_32
1430     x86_64
1431 '
1432
1433 ARCH_EXT_LIST_ARM='
1434     armv5te
1435     armv6
1436     armv6t2
1437     neon
1438     vfp
1439     vfpv3
1440 '
1441
1442 ARCH_EXT_LIST_X86='
1443     amd3dnow
1444     amd3dnowext
1445     avx
1446     avx2
1447     fma4
1448     i686
1449     mmx
1450     mmxext
1451     sse
1452     sse2
1453     sse3
1454     sse4
1455     sse42
1456     ssse3
1457 '
1458
1459 ARCH_EXT_LIST="
1460     $ARCH_EXT_LIST_ARM
1461     $ARCH_EXT_LIST_X86
1462     altivec
1463     ppc4xx
1464     vis
1465     mipsfpu
1466     mips32r2
1467     mipsdspr1
1468     mipsdspr2
1469 "
1470
1471 HAVE_LIST_CMDLINE='
1472     inline_asm
1473     symver
1474     yasm
1475 '
1476
1477 HAVE_LIST_PUB='
1478     bigendian
1479     fast_unaligned
1480     incompatible_libav_abi
1481     incompatible_fork_abi
1482 '
1483
1484 MATH_FUNCS="
1485     atanf
1486     atan2f
1487     cbrt
1488     cbrtf
1489     cosf
1490     exp2
1491     exp2f
1492     expf
1493     isinf
1494     isnan
1495     ldexpf
1496     llrint
1497     llrintf
1498     log2
1499     log2f
1500     log10f
1501     lrint
1502     lrintf
1503     powf
1504     rint
1505     round
1506     roundf
1507     sinf
1508     trunc
1509     truncf
1510 "
1511
1512 HAVE_LIST="
1513     $ARCH_EXT_LIST
1514     $(add_suffix _external $ARCH_EXT_LIST)
1515     $(add_suffix _inline   $ARCH_EXT_LIST)
1516     $HAVE_LIST_CMDLINE
1517     $HAVE_LIST_PUB
1518     $THREADS_LIST
1519     $ATOMICS_LIST
1520     $MATH_FUNCS
1521     access
1522     aligned_malloc
1523     aligned_stack
1524     alsa_asoundlib_h
1525     altivec_h
1526     arpa_inet_h
1527     asm_mod_q
1528     asm_mod_y
1529     asm_types_h
1530     atomic_cas_ptr
1531     atomics_native
1532     attribute_may_alias
1533     attribute_packed
1534     cdio_paranoia_h
1535     cdio_paranoia_paranoia_h
1536     CL_cl_h
1537     clock_gettime
1538     closesocket
1539     CommandLineToArgvW
1540     cpunop
1541     CryptGenRandom
1542     dcbzl
1543     dev_bktr_ioctl_bt848_h
1544     dev_bktr_ioctl_meteor_h
1545     dev_ic_bt8xx_h
1546     dev_video_bktr_ioctl_bt848_h
1547     dev_video_meteor_ioctl_meteor_h
1548     direct_h
1549     dlfcn_h
1550     dlopen
1551     dos_paths
1552     dxva_h
1553     ebp_available
1554     ebx_available
1555     fast_64bit
1556     fast_clz
1557     fast_cmov
1558     fcntl
1559     fork
1560     getaddrinfo
1561     gethrtime
1562     getopt
1563     GetProcessAffinityMask
1564     GetProcessMemoryInfo
1565     GetProcessTimes
1566     GetSystemTimeAsFileTime
1567     getrusage
1568     getservbyport
1569     gettimeofday
1570     glob
1571     gnu_as
1572     gnu_windres
1573     gsm_h
1574     ibm_asm
1575     inet_aton
1576     io_h
1577     inline_asm_labels
1578     isatty
1579     jack_port_get_latency_range
1580     kbhit
1581     ldbrx
1582     libc_msvcrt
1583     libdc1394_1
1584     libdc1394_2
1585     local_aligned_16
1586     local_aligned_8
1587     localtime_r
1588     loongson
1589     lzo1x_999_compress
1590     machine_ioctl_bt848_h
1591     machine_ioctl_meteor_h
1592     machine_rw_barrier
1593     makeinfo
1594     malloc_h
1595     MapViewOfFile
1596     memalign
1597     MemoryBarrier
1598     mkstemp
1599     mm_empty
1600     mmap
1601     mprotect
1602     nanosleep
1603     openjpeg_1_5_openjpeg_h
1604     PeekNamedPipe
1605     perl
1606     pod2man
1607     poll_h
1608     posix_memalign
1609     pragma_deprecated
1610     pthread_cancel
1611     rdtsc
1612     rsync_contimeout
1613     sarestart
1614     sched_getaffinity
1615     sdl
1616     SetConsoleTextAttribute
1617     setmode
1618     setrlimit
1619     Sleep
1620     sndio_h
1621     socklen_t
1622     soundcard_h
1623     strerror_r
1624     struct_addrinfo
1625     struct_group_source_req
1626     struct_ip_mreq_source
1627     struct_ipv6_mreq
1628     struct_pollfd
1629     struct_rusage_ru_maxrss
1630     struct_sctp_event_subscribe
1631     struct_sockaddr_in6
1632     struct_sockaddr_sa_len
1633     struct_sockaddr_storage
1634     struct_stat_st_mtim_tv_nsec
1635     struct_v4l2_frmivalenum_discrete
1636     symver_asm_label
1637     symver_gnu_asm
1638     sync_val_compare_and_swap
1639     sysconf
1640     sysctl
1641     sys_mman_h
1642     sys_param_h
1643     sys_resource_h
1644     sys_select_h
1645     sys_soundcard_h
1646     sys_time_h
1647     sys_un_h
1648     sys_videoio_h
1649     termios_h
1650     texi2html
1651     threads
1652     unistd_h
1653     usleep
1654     vdpau_x11
1655     vfp_args
1656     VirtualAlloc
1657     windows_h
1658     winsock2_h
1659     xform_asm
1660     xlib
1661     xmm_clobbers
1662 "
1663
1664 # options emitted with CONFIG_ prefix but not available on the command line
1665 CONFIG_EXTRA="
1666     aandcttables
1667     ac3dsp
1668     audio_frame_queue
1669     dsputil
1670     exif
1671     frame_thread_encoder
1672     gcrypt
1673     golomb
1674     gplv3
1675     h263dsp
1676     h264chroma
1677     h264dsp
1678     h264pred
1679     h264qpel
1680     hpeldsp
1681     huffman
1682     lgplv3
1683     lpc
1684     mpegaudio
1685     mpegaudiodsp
1686     mpegvideo
1687     mpegvideoenc
1688     nettle
1689     rangecoder
1690     riffdec
1691     riffenc
1692     rtpdec
1693     rtpenc_chain
1694     sinewin
1695     videodsp
1696     vp3dsp
1697 "
1698
1699 CMDLINE_SELECT="
1700     $ARCH_EXT_LIST
1701     $CONFIG_LIST
1702     $HAVE_LIST_CMDLINE
1703     $THREADS_LIST
1704     asm
1705     cross_compile
1706     debug
1707     extra_warnings
1708     logging
1709     lto
1710     optimizations
1711     rpath
1712     stripping
1713 "
1714
1715 PATHS_LIST='
1716     bindir
1717     datadir
1718     docdir
1719     incdir
1720     libdir
1721     mandir
1722     prefix
1723     shlibdir
1724 '
1725
1726 CMDLINE_SET="
1727     $PATHS_LIST
1728     ar
1729     arch
1730     as
1731     assert_level
1732     build_suffix
1733     cc
1734     cpu
1735     cross_prefix
1736     cxx
1737     dep_cc
1738     extra_version
1739     host_cc
1740     host_cflags
1741     host_ld
1742     host_ldflags
1743     host_libs
1744     host_os
1745     install
1746     ld
1747     logfile
1748     malloc_prefix
1749     nm
1750     optflags
1751     pkg_config
1752     progs_suffix
1753     random_seed
1754     samples
1755     strip
1756     sysinclude
1757     sysroot
1758     target_exec
1759     target_os
1760     target_path
1761     target_samples
1762     tempprefix
1763     toolchain
1764     valgrind
1765     yasmexe
1766 "
1767
1768 CMDLINE_APPEND="
1769     extra_cflags
1770     extra_cxxflags
1771     host_cppflags
1772 "
1773
1774 # code dependency declarations
1775
1776 # architecture extensions
1777
1778 armv5te_deps="arm"
1779 armv6_deps="arm"
1780 armv6t2_deps="arm"
1781 neon_deps_any="aarch64 arm"
1782 vfp_deps_any="aarch64 arm"
1783 vfpv3_deps="vfp"
1784
1785 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1786
1787 mipsfpu_deps="mips"
1788 mips32r2_deps="mips"
1789 mipsdspr1_deps="mips"
1790 mipsdspr2_deps="mips"
1791
1792 altivec_deps="ppc"
1793 ppc4xx_deps="ppc"
1794
1795 vis_deps="sparc"
1796
1797 cpunop_deps="i686"
1798 x86_64_select="i686"
1799 x86_64_suggest="fast_cmov"
1800
1801 amd3dnow_deps="mmx"
1802 amd3dnowext_deps="amd3dnow"
1803 mmx_deps="x86"
1804 mmxext_deps="mmx"
1805 sse_deps="mmxext"
1806 sse2_deps="sse"
1807 sse3_deps="sse2"
1808 ssse3_deps="sse3"
1809 sse4_deps="ssse3"
1810 sse42_deps="sse4"
1811 avx_deps="sse42"
1812 fma4_deps="avx"
1813 avx2_deps="avx"
1814
1815 mmx_external_deps="yasm"
1816 mmx_inline_deps="inline_asm"
1817 mmx_suggest="mmx_external mmx_inline"
1818
1819 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1820     eval dep=\$${ext}_deps
1821     eval ${ext}_external_deps='"${dep}_external"'
1822     eval ${ext}_inline_deps='"${dep}_inline"'
1823     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1824 done
1825
1826 aligned_stack_if_any="aarch64 ppc x86"
1827 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1828 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1829 fast_unaligned_if_any="aarch64 ppc x86"
1830
1831 need_memalign="altivec neon sse"
1832
1833 # system capabilities
1834 log2_deps="!libc_msvcrt"
1835
1836 symver_if_any="symver_asm_label symver_gnu_asm"
1837
1838 # threading support
1839 atomics_gcc_if="sync_val_compare_and_swap"
1840 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1841 atomics_win32_if="MemoryBarrier"
1842 atomics_native_if_any="$ATOMICS_LIST"
1843 threads_if_any="$THREADS_LIST"
1844
1845 # subsystems
1846 dct_select="rdft"
1847 error_resilience_select="dsputil"
1848 frame_thread_encoder_deps="encoders threads"
1849 lpc_select="dsputil"
1850 mdct_select="fft"
1851 rdft_select="fft"
1852 mpegaudio_select="mpegaudiodsp"
1853 mpegaudiodsp_select="dct"
1854 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1855 mpegvideoenc_select="mpegvideo"
1856
1857 # decoders / encoders
1858 aac_decoder_select="mdct sinewin"
1859 aac_encoder_select="audio_frame_queue mdct sinewin"
1860 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1861 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1862 ac3_encoder_select="mdct ac3dsp dsputil"
1863 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1864 aic_decoder_select="dsputil golomb"
1865 alac_encoder_select="lpc"
1866 als_decoder_select="dsputil"
1867 amrnb_decoder_select="lsp"
1868 amrwb_decoder_select="lsp"
1869 amv_decoder_select="dsputil hpeldsp exif"
1870 amv_encoder_select="aandcttables"
1871 ape_decoder_select="dsputil"
1872 asv1_decoder_select="dsputil"
1873 asv1_encoder_select="dsputil"
1874 asv2_decoder_select="dsputil"
1875 asv2_encoder_select="dsputil"
1876 atrac1_decoder_select="mdct sinewin"
1877 atrac3_decoder_select="mdct"
1878 atrac3p_decoder_select="mdct sinewin"
1879 avrn_decoder_select="exif"
1880 bink_decoder_select="dsputil hpeldsp"
1881 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1882 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1883 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1884 cllc_decoder_select="dsputil"
1885 comfortnoise_encoder_select="lpc"
1886 cook_decoder_select="dsputil mdct sinewin"
1887 cscd_decoder_select="lzo"
1888 cscd_decoder_suggest="zlib"
1889 dca_decoder_select="mdct"
1890 dirac_decoder_select="dsputil dwt golomb videodsp"
1891 dnxhd_decoder_select="dsputil"
1892 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1893 dvvideo_decoder_select="dsputil"
1894 dvvideo_encoder_select="dsputil"
1895 dxa_decoder_select="zlib"
1896 eac3_decoder_select="ac3_decoder"
1897 eac3_encoder_select="ac3_encoder"
1898 eamad_decoder_select="aandcttables dsputil mpegvideo"
1899 eatgq_decoder_select="aandcttables"
1900 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1901 exr_decoder_select="zlib"
1902 ffv1_decoder_select="dsputil golomb rangecoder"
1903 ffv1_encoder_select="dsputil rangecoder"
1904 ffvhuff_decoder_select="dsputil"
1905 ffvhuff_encoder_select="dsputil huffman"
1906 flac_decoder_select="golomb"
1907 flac_encoder_select="dsputil golomb lpc"
1908 flashsv_decoder_select="zlib"
1909 flashsv_encoder_select="zlib"
1910 flashsv2_encoder_select="zlib"
1911 flashsv2_decoder_select="zlib"
1912 flv_decoder_select="h263_decoder"
1913 flv_encoder_select="h263_encoder"
1914 fourxm_decoder_select="dsputil"
1915 fraps_decoder_select="dsputil huffman"
1916 g2m_decoder_select="dsputil zlib"
1917 g729_decoder_select="dsputil"
1918 h261_decoder_select="error_resilience mpegvideo"
1919 h261_encoder_select="aandcttables mpegvideoenc"
1920 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1921 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1922 h263i_decoder_select="h263_decoder"
1923 h263p_encoder_select="h263_encoder"
1924 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1925 h264_decoder_suggest="error_resilience"
1926 hevc_decoder_select="dsputil golomb videodsp"
1927 huffyuv_decoder_select="dsputil"
1928 huffyuv_encoder_select="dsputil huffman"
1929 iac_decoder_select="dsputil fft mdct sinewin"
1930 imc_decoder_select="dsputil fft mdct sinewin"
1931 indeo3_decoder_select="hpeldsp"
1932 interplay_video_decoder_select="hpeldsp"
1933 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1934 jpegls_encoder_select="golomb"
1935 jv_decoder_select="dsputil"
1936 lagarith_decoder_select="dsputil"
1937 ljpeg_encoder_select="aandcttables mpegvideoenc"
1938 loco_decoder_select="golomb"
1939 mdec_decoder_select="dsputil error_resilience mpegvideo"
1940 metasound_decoder_select="lsp mdct sinewin"
1941 mimic_decoder_select="dsputil hpeldsp"
1942 mjpeg_decoder_select="dsputil hpeldsp exif"
1943 mjpegb_decoder_select="dsputil hpeldsp exif"
1944 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1945 mlp_decoder_select="dsputil mlp_parser"
1946 motionpixels_decoder_select="dsputil"
1947 mp1_decoder_select="mpegaudio"
1948 mp1float_decoder_select="mpegaudio"
1949 mp2_decoder_select="mpegaudio"
1950 mp2float_decoder_select="mpegaudio"
1951 mp3_decoder_select="mpegaudio"
1952 mp3adu_decoder_select="mpegaudio"
1953 mp3adufloat_decoder_select="mpegaudio"
1954 mp3float_decoder_select="mpegaudio"
1955 mp3on4_decoder_select="mpegaudio"
1956 mp3on4float_decoder_select="mpegaudio"
1957 mpc7_decoder_select="dsputil mpegaudiodsp"
1958 mpc8_decoder_select="dsputil mpegaudiodsp"
1959 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1960 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1961 mpeg1video_decoder_select="error_resilience mpegvideo"
1962 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1963 mpeg2video_decoder_select="error_resilience mpegvideo"
1964 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1965 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1966 mpeg4_encoder_select="h263_encoder"
1967 msmpeg4v1_decoder_select="h263_decoder"
1968 msmpeg4v2_decoder_select="h263_decoder"
1969 msmpeg4v2_encoder_select="h263_encoder"
1970 msmpeg4v3_decoder_select="h263_decoder"
1971 msmpeg4v3_encoder_select="h263_encoder"
1972 mss2_decoder_select="error_resilience vc1_decoder"
1973 mxpeg_decoder_select="dsputil hpeldsp exif"
1974 nellymoser_decoder_select="mdct sinewin"
1975 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1976 nuv_decoder_select="dsputil lzo"
1977 png_decoder_select="zlib"
1978 png_encoder_select="dsputil zlib"
1979 prores_decoder_select="dsputil"
1980 prores_encoder_select="dsputil"
1981 qcelp_decoder_select="lsp"
1982 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1983 ra_144_encoder_select="audio_frame_queue lpc"
1984 ralf_decoder_select="golomb"
1985 rtjpeg_decoder_select="dsputil"
1986 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1987 rv10_encoder_select="h263_encoder"
1988 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1989 rv20_encoder_select="h263_encoder"
1990 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1991 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1992 shorten_decoder_select="golomb"
1993 sipr_decoder_select="lsp"
1994 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1995 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1996 sonic_decoder_select="golomb"
1997 sonic_encoder_select="golomb"
1998 sonic_ls_encoder_select="golomb"
1999 sp5x_decoder_select="dsputil hpeldsp exif"
2000 svq1_decoder_select="hpeldsp"
2001 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2002 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
2003 svq3_decoder_suggest="error_resilience zlib"
2004 tak_decoder_select="dsputil"
2005 theora_decoder_select="vp3_decoder"
2006 tiff_decoder_suggest="zlib"
2007 tiff_encoder_suggest="zlib"
2008 thp_decoder_select="dsputil hpeldsp exif"
2009 truehd_decoder_select="mlp_parser"
2010 truemotion2_decoder_select="dsputil"
2011 truespeech_decoder_select="dsputil"
2012 tscc_decoder_select="zlib"
2013 twinvq_decoder_select="mdct lsp sinewin"
2014 utvideo_decoder_select="dsputil"
2015 utvideo_encoder_select="dsputil huffman"
2016 vble_decoder_select="dsputil"
2017 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
2018 vc1image_decoder_select="vc1_decoder"
2019 vorbis_decoder_select="mdct"
2020 vorbis_encoder_select="mdct"
2021 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2022 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2023 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2024 vp6a_decoder_select="vp6_decoder"
2025 vp6f_decoder_select="vp6_decoder"
2026 vp8_decoder_select="h264pred videodsp"
2027 vp9_decoder_select="videodsp"
2028 webp_decoder_select="vp8_decoder"
2029 wmapro_decoder_select="mdct sinewin"
2030 wmav1_decoder_select="mdct sinewin"
2031 wmav1_encoder_select="mdct sinewin"
2032 wmav2_decoder_select="mdct sinewin"
2033 wmav2_encoder_select="mdct sinewin"
2034 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2035 wmv1_decoder_select="h263_decoder"
2036 wmv1_encoder_select="h263_encoder"
2037 wmv2_decoder_select="h263_decoder videodsp"
2038 wmv2_encoder_select="h263_encoder"
2039 wmv3_decoder_select="vc1_decoder"
2040 wmv3image_decoder_select="wmv3_decoder"
2041 zerocodec_decoder_select="zlib"
2042 zlib_decoder_select="zlib"
2043 zlib_encoder_select="zlib"
2044 zmbv_decoder_select="zlib"
2045 zmbv_encoder_select="zlib"
2046
2047 # hardware accelerators
2048 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2049 dxva2_deps="dxva2api_h"
2050 vaapi_deps="va_va_h"
2051 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2052 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2053 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2054 xvmc_deps="X11_extensions_XvMClib_h"
2055
2056 h263_vaapi_hwaccel_deps="vaapi"
2057 h263_vaapi_hwaccel_select="h263_decoder"
2058 h263_vdpau_hwaccel_deps="vdpau"
2059 h263_vdpau_hwaccel_select="h263_decoder"
2060 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2061 h264_dxva2_hwaccel_deps="dxva2"
2062 h264_dxva2_hwaccel_select="h264_decoder"
2063 h264_vaapi_hwaccel_deps="vaapi"
2064 h264_vaapi_hwaccel_select="h264_decoder"
2065 h264_vda_decoder_deps="vda"
2066 h264_vda_decoder_select="h264_decoder"
2067 h264_vda_hwaccel_deps="vda"
2068 h264_vda_hwaccel_select="h264_decoder"
2069 h264_vdpau_decoder_deps="vdpau"
2070 h264_vdpau_decoder_select="h264_decoder"
2071 h264_vdpau_hwaccel_deps="vdpau"
2072 h264_vdpau_hwaccel_select="h264_decoder"
2073 mpeg_vdpau_decoder_deps="vdpau"
2074 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2075 mpeg_xvmc_hwaccel_deps="xvmc"
2076 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2077 mpeg1_vdpau_decoder_deps="vdpau"
2078 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2079 mpeg1_vdpau_hwaccel_deps="vdpau"
2080 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2081 mpeg1_xvmc_hwaccel_deps="xvmc"
2082 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2083 mpeg2_crystalhd_decoder_select="crystalhd"
2084 mpeg2_dxva2_hwaccel_deps="dxva2"
2085 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2086 mpeg2_vaapi_hwaccel_deps="vaapi"
2087 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2088 mpeg2_vdpau_hwaccel_deps="vdpau"
2089 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2090 mpeg2_xvmc_hwaccel_deps="xvmc"
2091 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2092 mpeg4_crystalhd_decoder_select="crystalhd"
2093 mpeg4_vaapi_hwaccel_deps="vaapi"
2094 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2095 mpeg4_vdpau_decoder_deps="vdpau"
2096 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2097 mpeg4_vdpau_hwaccel_deps="vdpau"
2098 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2099 msmpeg4_crystalhd_decoder_select="crystalhd"
2100 vc1_crystalhd_decoder_select="crystalhd"
2101 vc1_dxva2_hwaccel_deps="dxva2"
2102 vc1_dxva2_hwaccel_select="vc1_decoder"
2103 vc1_vaapi_hwaccel_deps="vaapi"
2104 vc1_vaapi_hwaccel_select="vc1_decoder"
2105 vc1_vdpau_decoder_deps="vdpau"
2106 vc1_vdpau_decoder_select="vc1_decoder"
2107 vc1_vdpau_hwaccel_deps="vdpau"
2108 vc1_vdpau_hwaccel_select="vc1_decoder"
2109 wmv3_crystalhd_decoder_select="crystalhd"
2110 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2111 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2112 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2113 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2114
2115 # parsers
2116 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2117 hevc_parser_select="hevc_decoder"
2118 mpeg4video_parser_select="error_resilience mpegvideo"
2119 mpegvideo_parser_select="error_resilience mpegvideo"
2120 vc1_parser_select="mpegvideo"
2121
2122 # external libraries
2123 libaacplus_encoder_deps="libaacplus"
2124 libcelt_decoder_deps="libcelt"
2125 libfaac_encoder_deps="libfaac"
2126 libfaac_encoder_select="audio_frame_queue"
2127 libfdk_aac_decoder_deps="libfdk_aac"
2128 libfdk_aac_encoder_deps="libfdk_aac"
2129 libfdk_aac_encoder_select="audio_frame_queue"
2130 libgme_demuxer_deps="libgme"
2131 libgsm_decoder_deps="libgsm"
2132 libgsm_encoder_deps="libgsm"
2133 libgsm_ms_decoder_deps="libgsm"
2134 libgsm_ms_encoder_deps="libgsm"
2135 libilbc_decoder_deps="libilbc"
2136 libilbc_encoder_deps="libilbc"
2137 libmodplug_demuxer_deps="libmodplug"
2138 libmp3lame_encoder_deps="libmp3lame"
2139 libmp3lame_encoder_select="audio_frame_queue"
2140 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2141 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2142 libopencore_amrnb_encoder_select="audio_frame_queue"
2143 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2144 libopenjpeg_decoder_deps="libopenjpeg"
2145 libopenjpeg_encoder_deps="libopenjpeg"
2146 libopus_decoder_deps="libopus"
2147 libopus_encoder_deps="libopus"
2148 libopus_encoder_select="audio_frame_queue"
2149 libquvi_demuxer_deps="libquvi"
2150 libschroedinger_decoder_deps="libschroedinger"
2151 libschroedinger_encoder_deps="libschroedinger"
2152 libshine_encoder_deps="libshine"
2153 libshine_encoder_select="audio_frame_queue"
2154 libspeex_decoder_deps="libspeex"
2155 libspeex_encoder_deps="libspeex"
2156 libspeex_encoder_select="audio_frame_queue"
2157 libstagefright_h264_decoder_deps="libstagefright_h264"
2158 libtheora_encoder_deps="libtheora"
2159 libtwolame_encoder_deps="libtwolame"
2160 libvo_aacenc_encoder_deps="libvo_aacenc"
2161 libvo_aacenc_encoder_select="audio_frame_queue"
2162 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2163 libvorbis_decoder_deps="libvorbis"
2164 libvorbis_encoder_deps="libvorbis"
2165 libvorbis_encoder_select="audio_frame_queue"
2166 libvpx_vp8_decoder_deps="libvpx"
2167 libvpx_vp8_encoder_deps="libvpx"
2168 libvpx_vp9_decoder_deps="libvpx"
2169 libvpx_vp9_encoder_deps="libvpx"
2170 libwavpack_encoder_deps="libwavpack"
2171 libwebp_encoder_deps="libwebp"
2172 libx264_encoder_deps="libx264"
2173 libx264rgb_encoder_deps="libx264"
2174 libxavs_encoder_deps="libxavs"
2175 libxvid_encoder_deps="libxvid"
2176 libutvideo_decoder_deps="libutvideo"
2177 libutvideo_encoder_deps="libutvideo"
2178 libzvbi_teletext_decoder_deps="libzvbi"
2179
2180 # demuxers / muxers
2181 ac3_demuxer_select="ac3_parser"
2182 asf_demuxer_select="riffdec"
2183 asf_muxer_select="riffenc"
2184 asf_stream_muxer_select="asf_muxer"
2185 avi_demuxer_select="riffdec"
2186 avi_muxer_select="riffenc"
2187 avisynth_demuxer_deps="avisynth"
2188 avisynth_demuxer_select="riffdec"
2189 caf_demuxer_select="riffdec"
2190 dirac_demuxer_select="dirac_parser"
2191 dts_demuxer_select="dca_parser"
2192 dtshd_demuxer_select="dca_parser"
2193 dxa_demuxer_select="riffdec"
2194 eac3_demuxer_select="ac3_parser"
2195 f4v_muxer_select="mov_muxer"
2196 flac_demuxer_select="flac_parser"
2197 hds_muxer_select="flv_muxer"
2198 hls_muxer_select="mpegts_muxer"
2199 ipod_muxer_select="mov_muxer"
2200 ismv_muxer_select="mov_muxer"
2201 libnut_demuxer_deps="libnut"
2202 libnut_muxer_deps="libnut"
2203 matroska_audio_muxer_select="matroska_muxer"
2204 matroska_demuxer_select="riffdec"
2205 matroska_demuxer_suggest="bzlib lzo zlib"
2206 matroska_muxer_select="riffenc"
2207 mmf_muxer_select="riffenc"
2208 mov_demuxer_select="riffdec"
2209 mov_demuxer_suggest="zlib"
2210 mov_muxer_select="riffenc rtpenc_chain"
2211 mp3_demuxer_select="mpegaudio_parser"
2212 mp4_muxer_select="mov_muxer"
2213 mpegts_muxer_select="adts_muxer latm_muxer"
2214 mpegtsraw_demuxer_select="mpegts_demuxer"
2215 mxf_d10_muxer_select="mxf_muxer"
2216 nut_muxer_select="riffenc"
2217 nuv_demuxer_select="riffdec"
2218 ogg_demuxer_select="golomb"
2219 psp_muxer_select="mov_muxer"
2220 rtp_demuxer_select="sdp_demuxer"
2221 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2222 rtsp_demuxer_select="http_protocol rtpdec"
2223 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2224 sap_demuxer_select="sdp_demuxer"
2225 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2226 sdp_demuxer_select="rtpdec"
2227 smoothstreaming_muxer_select="ismv_muxer"
2228 spdif_muxer_select="aac_parser"
2229 tak_demuxer_select="tak_parser"
2230 tg2_muxer_select="mov_muxer"
2231 tgp_muxer_select="mov_muxer"
2232 vobsub_demuxer_select="mpegps_demuxer"
2233 w64_demuxer_select="wav_demuxer"
2234 w64_muxer_select="wav_muxer"
2235 wav_demuxer_select="riffdec"
2236 wav_muxer_select="riffenc"
2237 webm_muxer_select="riffenc"
2238 wtv_demuxer_select="riffdec"
2239 xmv_demuxer_select="riffdec"
2240 xwma_demuxer_select="riffdec"
2241
2242 # indevs / outdevs
2243 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2244 alsa_outdev_deps="alsa_asoundlib_h"
2245 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2246 caca_outdev_deps="libcaca"
2247 dshow_indev_deps="IBaseFilter"
2248 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2249 dv1394_indev_deps="dv1394"
2250 dv1394_indev_select="dv_demuxer"
2251 fbdev_indev_deps="linux_fb_h"
2252 fbdev_outdev_deps="linux_fb_h"
2253 iec61883_indev_deps="libiec61883"
2254 jack_indev_deps="jack_jack_h sem_timedwait"
2255 lavfi_indev_deps="avfilter"
2256 libcdio_indev_deps="libcdio"
2257 libdc1394_indev_deps="libdc1394"
2258 libv4l2_indev_deps="libv4l2"
2259 openal_indev_deps="openal"
2260 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2261 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2262 pulse_indev_deps="libpulse"
2263 pulse_outdev_deps="libpulse"
2264 sdl_outdev_deps="sdl"
2265 sndio_indev_deps="sndio_h"
2266 sndio_outdev_deps="sndio_h"
2267 v4l_indev_deps="linux_videodev_h"
2268 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2269 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2270 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2271 vfwcap_indev_extralibs="-lavicap32"
2272 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2273 xv_outdev_extralibs="-lXv -lX11 -lXext"
2274 x11grab_indev_deps="x11grab"
2275
2276 # protocols
2277 bluray_protocol_deps="libbluray"
2278 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2279 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2280 ffrtmpcrypt_protocol_select="tcp_protocol"
2281 ffrtmphttp_protocol_deps="!librtmp_protocol"
2282 ffrtmphttp_protocol_select="http_protocol"
2283 ftp_protocol_select="tcp_protocol"
2284 gopher_protocol_select="network"
2285 httpproxy_protocol_select="tcp_protocol"
2286 http_protocol_select="tcp_protocol"
2287 https_protocol_select="tls_protocol"
2288 librtmp_protocol_deps="librtmp"
2289 librtmpe_protocol_deps="librtmp"
2290 librtmps_protocol_deps="librtmp"
2291 librtmpt_protocol_deps="librtmp"
2292 librtmpte_protocol_deps="librtmp"
2293 libssh_protocol_deps="libssh"
2294 mmsh_protocol_select="http_protocol"
2295 mmst_protocol_select="network"
2296 rtmp_protocol_deps="!librtmp_protocol"
2297 rtmp_protocol_select="tcp_protocol"
2298 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2299 rtmps_protocol_deps="!librtmp_protocol"
2300 rtmps_protocol_select="tls_protocol"
2301 rtmpt_protocol_select="ffrtmphttp_protocol"
2302 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2303 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2304 rtp_protocol_select="udp_protocol"
2305 sctp_protocol_deps="struct_sctp_event_subscribe"
2306 sctp_protocol_select="network"
2307 srtp_protocol_select="rtp_protocol"
2308 tcp_protocol_select="network"
2309 tls_protocol_deps_any="openssl gnutls"
2310 tls_protocol_select="tcp_protocol"
2311 udp_protocol_select="network"
2312 unix_protocol_deps="sys_un_h"
2313 unix_protocol_select="network"
2314
2315 # filters
2316 aconvert_filter_deps="swresample"
2317 amovie_filter_deps="avcodec avformat"
2318 aresample_filter_deps="swresample"
2319 ass_filter_deps="libass"
2320 asyncts_filter_deps="avresample"
2321 atempo_filter_deps="avcodec"
2322 atempo_filter_select="rdft"
2323 azmq_filter_deps="libzmq"
2324 blackframe_filter_deps="gpl"
2325 boxblur_filter_deps="gpl"
2326 colormatrix_filter_deps="gpl"
2327 cropdetect_filter_deps="gpl"
2328 dctdnoiz_filter_deps="avcodec"
2329 dctdnoiz_filter_select="fft"
2330 delogo_filter_deps="gpl"
2331 deshake_filter_deps="avcodec"
2332 deshake_filter_select="dsputil"
2333 drawtext_filter_deps="libfreetype"
2334 ebur128_filter_deps="gpl"
2335 flite_filter_deps="libflite"
2336 frei0r_filter_deps="frei0r dlopen"
2337 frei0r_filter_extralibs='$ldl'
2338 frei0r_src_filter_deps="frei0r dlopen"
2339 frei0r_src_filter_extralibs='$ldl'
2340 geq_filter_deps="gpl"
2341 histeq_filter_deps="gpl"
2342 hqdn3d_filter_deps="gpl"
2343 interlace_filter_deps="gpl"
2344 kerndeint_filter_deps="gpl"
2345 ladspa_filter_deps="ladspa dlopen"
2346 mcdeint_filter_deps="avcodec gpl"
2347 movie_filter_deps="avcodec avformat"
2348 mp_filter_deps="gpl avcodec swscale inline_asm"
2349 mpdecimate_filter_deps="gpl avcodec"
2350 mptestsrc_filter_deps="gpl"
2351 negate_filter_deps="lut_filter"
2352 perspective_filter_deps="gpl"
2353 resample_filter_deps="avresample"
2354 ocv_filter_deps="libopencv"
2355 owdenoise_filter_deps="gpl"
2356 pan_filter_deps="swresample"
2357 phase_filter_deps="gpl"
2358 pp_filter_deps="gpl postproc"
2359 pullup_filter_deps="gpl"
2360 removelogo_filter_deps="avcodec avformat swscale"
2361 sab_filter_deps="gpl swscale"
2362 scale_filter_deps="swscale"
2363 smartblur_filter_deps="gpl swscale"
2364 showspectrum_filter_deps="avcodec"
2365 showspectrum_filter_select="rdft"
2366 spp_filter_deps="gpl avcodec"
2367 spp_filter_select="fft"
2368 stereo3d_filter_deps="gpl"
2369 subtitles_filter_deps="avformat avcodec libass"
2370 super2xsai_filter_deps="gpl"
2371 tinterlace_filter_deps="gpl"
2372 vidstabdetect_filter_deps="libvidstab"
2373 vidstabtransform_filter_deps="libvidstab"
2374 pixfmts_super2xsai_test_deps="super2xsai_filter"
2375 tinterlace_merge_test_deps="tinterlace_filter"
2376 tinterlace_pad_test_deps="tinterlace_filter"
2377 zmq_filter_deps="libzmq"
2378
2379 # examples
2380 decoding_encoding_example_deps="avcodec avutil"
2381 demuxing_decoding_example_deps="avcodec avformat avutil"
2382 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2383 filtering_video_example_deps="avfilter avcodec avformat avutil"
2384 metadata_example_deps="avformat avutil"
2385 muxing_example_deps="avcodec avformat avutil swscale"
2386 resampling_audio_example_deps="avutil swresample"
2387 scaling_video_example_deps="avutil swscale"
2388 transcode_aac_example_deps="avcodec avformat swresample"
2389
2390 # libraries
2391 avcodec_deps="avutil"
2392 avdevice_deps="avutil avcodec avformat"
2393 avfilter_deps="avutil"
2394 avformat_deps="avutil avcodec"
2395 avresample_deps="avutil"
2396 postproc_deps="avutil gpl"
2397 swscale_deps="avutil"
2398
2399 # programs
2400 ffmpeg_deps="avcodec avfilter avformat swresample"
2401 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2402                null_filter
2403                setpts_filter trim_filter"
2404 ffplay_deps="avcodec avformat swscale swresample sdl"
2405 ffplay_select="rdft crop_filter"
2406 ffprobe_deps="avcodec avformat"
2407 ffserver_deps="avformat fork sarestart"
2408 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2409 ffserver_extralibs='$ldl'
2410
2411 # documentation
2412 podpages_deps="perl"
2413 manpages_deps="perl pod2man"
2414 htmlpages_deps="perl texi2html"
2415 txtpages_deps="perl makeinfo"
2416 doc_deps_any="manpages htmlpages podpages txtpages"
2417
2418 # default parameters
2419
2420 logfile="config.log"
2421
2422 # installation paths
2423 prefix_default="/usr/local"
2424 bindir_default='${prefix}/bin'
2425 datadir_default='${prefix}/share/ffmpeg'
2426 docdir_default='${prefix}/share/doc/ffmpeg'
2427 incdir_default='${prefix}/include'
2428 libdir_default='${prefix}/lib'
2429 mandir_default='${prefix}/share/man'
2430 shlibdir_default="$libdir_default"
2431
2432 # toolchain
2433 ar_default="ar"
2434 cc_default="gcc"
2435 cxx_default="g++"
2436 host_cc_default="gcc"
2437 cp_f="cp -f"
2438 install="install"
2439 ln_s="ln -s -f"
2440 nm_default="nm -g"
2441 objformat="elf"
2442 pkg_config_default=pkg-config
2443 ranlib="ranlib"
2444 strip_default="strip"
2445 yasmexe_default="yasm"
2446 windres_default="windres"
2447
2448 nogas=":"
2449
2450 # machine
2451 arch_default=$(uname -m)
2452 cpu="generic"
2453
2454 # OS
2455 target_os_default=$(tolower $(uname -s))
2456 host_os=$target_os_default
2457
2458 # configurable options
2459 enable $PROGRAM_LIST
2460 enable $DOCUMENT_LIST
2461 enable $EXAMPLE_LIST
2462 enable $(filter_out avresample $LIBRARY_LIST)
2463 enable stripping
2464
2465 enable asm
2466 enable debug
2467 enable doc
2468 enable optimizations
2469 enable runtime_cpudetect
2470 enable safe_bitstream_reader
2471 enable static
2472 enable swscale_alpha
2473
2474 # Enable hwaccels by default.
2475 enable dxva2 vaapi vdpau xvmc
2476
2477 # build settings
2478 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2479 LIBPREF="lib"
2480 LIBSUF=".a"
2481 FULLNAME='$(NAME)$(BUILDSUF)'
2482 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2483 SLIBPREF="lib"
2484 SLIBSUF=".so"
2485 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2486 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2487 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2488 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2489 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2490 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2491
2492 asflags_filter=echo
2493 cflags_filter=echo
2494 ldflags_filter=echo
2495
2496 AS_C='-c'
2497 AS_O='-o $@'
2498 CC_C='-c'
2499 CC_E='-E -o $@'
2500 CC_O='-o $@'
2501 CXX_C='-c'
2502 CXX_O='-o $@'
2503 LD_O='-o $@'
2504 LD_LIB='-l%'
2505 LD_PATH='-L'
2506 HOSTCC_C='-c'
2507 HOSTCC_E='-E -o $@'
2508 HOSTCC_O='-o $@'
2509 HOSTLD_O='-o $@'
2510
2511 host_cflags='-O3'
2512 host_cppflags='-D_ISOC99_SOURCE'
2513 host_libs='-lm'
2514 host_cflags_filter=echo
2515 host_ldflags_filter=echo
2516
2517 target_path='$(CURDIR)'
2518
2519 # since the object filename is not given with the -MM flag, the compiler
2520 # is only able to print the basename, and we must add the path ourselves
2521 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2522 DEPFLAGS='-MM'
2523
2524 # find source path
2525 if test -f configure; then
2526     source_path=.
2527 else
2528     source_path=$(cd $(dirname "$0"); pwd)
2529     echo "$source_path" | grep -q '[[:blank:]]' &&
2530         die "Out of tree builds are impossible with whitespace in source path."
2531     test -e "$source_path/config.h" &&
2532         die "Out of tree builds are impossible with config.h in source dir."
2533 fi
2534
2535 for v in "$@"; do
2536     r=${v#*=}
2537     l=${v%"$r"}
2538     r=$(sh_quote "$r")
2539     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2540 done
2541
2542 find_things(){
2543     thing=$1
2544     pattern=$2
2545     file=$source_path/$3
2546     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2547 }
2548
2549 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2550 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2551 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2552 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2553 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2554 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2555 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2556 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2557 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2558 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2559 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2560
2561 ALL_COMPONENTS="
2562     $BSF_LIST
2563     $DECODER_LIST
2564     $DEMUXER_LIST
2565     $ENCODER_LIST
2566     $FILTER_LIST
2567     $HWACCEL_LIST
2568     $INDEV_LIST
2569     $MUXER_LIST
2570     $OUTDEV_LIST
2571     $PARSER_LIST
2572     $PROTOCOL_LIST
2573 "
2574
2575 for n in $COMPONENT_LIST; do
2576     v=$(toupper ${n%s})_LIST
2577     eval enable \$$v
2578     eval ${n}_if_any="\$$v"
2579 done
2580
2581 enable $ARCH_EXT_LIST
2582
2583 die_unknown(){
2584     echo "Unknown option \"$1\"."
2585     echo "See $0 --help for available options."
2586     exit 1
2587 }
2588
2589 print_3_columns() {
2590     cat | tr ' ' '\n' | sort | pr -r -3 -t
2591 }
2592
2593 show_list() {
2594     suffix=_$1
2595     shift
2596     echo $* | sed s/$suffix//g | print_3_columns
2597     exit 0
2598 }
2599
2600 rand_list(){
2601     IFS=', '
2602     set -- $*
2603     unset IFS
2604     for thing; do
2605         comp=${thing%:*}
2606         prob=${thing#$comp}
2607         prob=${prob#:}
2608         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2609         echo "prob ${prob:-0.5}"
2610         printf '%s\n' $comp
2611     done
2612 }
2613
2614 do_random(){
2615     action=$1
2616     shift
2617     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2618     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2619 }
2620
2621 for opt do
2622     optval="${opt#*=}"
2623     case "$opt" in
2624         --extra-ldflags=*)
2625             add_ldflags $optval
2626         ;;
2627         --extra-libs=*)
2628             add_extralibs $optval
2629         ;;
2630         --disable-devices)
2631             disable $INDEV_LIST $OUTDEV_LIST
2632         ;;
2633         --enable-debug=*)
2634             debuglevel="$optval"
2635         ;;
2636         --disable-programs)
2637             disable $PROGRAM_LIST
2638         ;;
2639         --disable-everything)
2640             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2641         ;;
2642         --disable-all)
2643             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2644             disable $LIBRARY_LIST $PROGRAM_LIST doc
2645         ;;
2646         --enable-random|--disable-random)
2647             action=${opt%%-random}
2648             do_random ${action#--} $COMPONENT_LIST
2649         ;;
2650         --enable-random=*|--disable-random=*)
2651             action=${opt%%-random=*}
2652             do_random ${action#--} $optval
2653         ;;
2654         --enable-*=*|--disable-*=*)
2655             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2656             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2657             eval list=\$$(toupper $thing)_LIST
2658             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2659             list=$(filter "$name" $list)
2660             [ "$list" = "" ] && warn "Option $opt did not match anything"
2661             $action $list
2662         ;;
2663         --enable-?*|--disable-?*)
2664             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2665             if is_in $option $COMPONENT_LIST; then
2666                 test $action = disable && action=unset
2667                 eval $action \$$(toupper ${option%s})_LIST
2668             elif is_in $option $CMDLINE_SELECT; then
2669                 $action $option
2670             else
2671                 die_unknown $opt
2672             fi
2673         ;;
2674         --list-*)
2675             NAME="${opt#--list-}"
2676             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2677             NAME=${NAME%s}
2678             eval show_list $NAME \$$(toupper $NAME)_LIST
2679         ;;
2680         --help|-h) show_help
2681         ;;
2682         --fatal-warnings) enable fatal_warnings
2683         ;;
2684         *)
2685             optname="${opt%%=*}"
2686             optname="${optname#--}"
2687             optname=$(echo "$optname" | sed 's/-/_/g')
2688             if is_in $optname $CMDLINE_SET; then
2689                 eval $optname='$optval'
2690             elif is_in $optname $CMDLINE_APPEND; then
2691                 append $optname "$optval"
2692             else
2693                 die_unknown $opt
2694             fi
2695         ;;
2696     esac
2697 done
2698
2699 disabled logging && logfile=/dev/null
2700
2701 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2702 set >> $logfile
2703
2704 test -n "$cross_prefix" && enable cross_compile
2705
2706 if enabled cross_compile; then
2707     test -n "$arch" && test -n "$target_os" ||
2708         die "Must specify target arch and OS when cross-compiling"
2709 fi
2710
2711 ar_default="${cross_prefix}${ar_default}"
2712 cc_default="${cross_prefix}${cc_default}"
2713 cxx_default="${cross_prefix}${cxx_default}"
2714 nm_default="${cross_prefix}${nm_default}"
2715 pkg_config_default="${cross_prefix}${pkg_config_default}"
2716 ranlib="${cross_prefix}${ranlib}"
2717 strip_default="${cross_prefix}${strip_default}"
2718 windres_default="${cross_prefix}${windres_default}"
2719
2720 sysinclude_default="${sysroot}/usr/include"
2721
2722 test -n "$valgrind" && toolchain="valgrind-memcheck"
2723
2724 case "$toolchain" in
2725     clang-asan)
2726         cc_default="clang"
2727         add_cflags  -fsanitize=address
2728         add_ldflags -fsanitize=address
2729     ;;
2730     clang-tsan)
2731         cc_default="clang"
2732         add_cflags  -fsanitize=thread -pie
2733         add_ldflags -fsanitize=thread -pie
2734     ;;
2735     gcc-asan)
2736         cc_default="gcc"
2737         add_cflags  -fsanitize=address
2738         add_ldflags -fsanitize=address
2739     ;;
2740     gcc-tsan)
2741         cc_default="gcc"
2742         add_cflags  -fsanitize=thread -pie -fPIC
2743         add_ldflags -fsanitize=thread -pie -fPIC
2744     ;;
2745     valgrind-massif)
2746         target_exec_default=${valgrind:-"valgrind"}
2747         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"
2748     ;;
2749     valgrind-memcheck)
2750         target_exec_default=${valgrind:-"valgrind"}
2751         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2752     ;;
2753     msvc)
2754         # Check whether the current MSVC version needs the C99 converter.
2755         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2756         # support enough of C99 to build ffmpeg. Default to the new
2757         # behaviour if the regexp was unable to match anything, since this
2758         # successfully parses the version number of existing supported
2759         # versions that require the converter (MSVC 2010 and 2012).
2760         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2761         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2762             cc_default="cl"
2763         else
2764             cc_default="c99wrap cl"
2765         fi
2766         ld_default="link"
2767         nm_default="dumpbin -symbols"
2768         ar_default="lib"
2769         target_os_default="win32"
2770         # Use a relative path for TMPDIR. This makes sure all the
2771         # ffconf temp files are written with a relative path, avoiding
2772         # issues with msys/win32 path conversion for MSVC parameters
2773         # such as -Fo<file> or -out:<file>.
2774         TMPDIR=.
2775     ;;
2776     icl)
2777         cc_default="icl"
2778         ld_default="xilink"
2779         nm_default="dumpbin -symbols"
2780         ar_default="xilib"
2781         target_os_default="win32"
2782         TMPDIR=.
2783     ;;
2784     gcov)
2785         add_cflags  -fprofile-arcs -ftest-coverage
2786         add_ldflags -fprofile-arcs -ftest-coverage
2787     ;;
2788     hardened)
2789         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2790         add_ldflags -Wl,-z,relro -Wl,-z,now
2791     ;;
2792     ?*)
2793         die "Unknown toolchain $toolchain"
2794     ;;
2795 esac
2796
2797 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2798 enabled cross_compile || host_cc_default=$cc
2799 set_default host_cc
2800
2801 if ! $pkg_config --version >/dev/null 2>&1; then
2802     warn "$pkg_config not found, library detection may fail."
2803     pkg_config=false
2804 fi
2805
2806 exesuf() {
2807     case $1 in
2808         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2809     esac
2810 }
2811
2812 EXESUF=$(exesuf $target_os)
2813 HOSTEXESUF=$(exesuf $host_os)
2814
2815 # set temporary file name
2816 : ${TMPDIR:=$TEMPDIR}
2817 : ${TMPDIR:=$TMP}
2818 : ${TMPDIR:=/tmp}
2819
2820 if [ -n "$tempprefix" ] ; then
2821     mktemp(){
2822         echo $tempprefix.${HOSTNAME}.${UID}
2823     }
2824 elif ! check_cmd mktemp -u XXXXXX; then
2825     # simple replacement for missing mktemp
2826     # NOT SAFE FOR GENERAL USE
2827     mktemp(){
2828         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2829     }
2830 fi
2831
2832 tmpfile(){
2833     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2834         (set -C; exec > $tmp) 2>/dev/null ||
2835         die "Unable to create temporary file in $TMPDIR."
2836     append TMPFILES $tmp
2837     eval $1=$tmp
2838 }
2839
2840 trap 'rm -f -- $TMPFILES' EXIT
2841
2842 tmpfile TMPASM .asm
2843 tmpfile TMPC   .c
2844 tmpfile TMPCPP .cpp
2845 tmpfile TMPE   $EXESUF
2846 tmpfile TMPH   .h
2847 tmpfile TMPO   .o
2848 tmpfile TMPS   .S
2849 tmpfile TMPSH  .sh
2850 tmpfile TMPV   .ver
2851
2852 unset -f mktemp
2853
2854 chmod +x $TMPE
2855
2856 # make sure we can execute files in $TMPDIR
2857 cat > $TMPSH 2>> $logfile <<EOF
2858 #! /bin/sh
2859 EOF
2860 chmod +x $TMPSH >> $logfile 2>&1
2861 if ! $TMPSH >> $logfile 2>&1; then
2862     cat <<EOF
2863 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2864 variable to another directory and make sure that it is not mounted noexec.
2865 EOF
2866     die "Sanity test failed."
2867 fi
2868
2869 ccc_flags(){
2870     for flag; do
2871         case $flag in
2872             -std=c99)           echo -c99                       ;;
2873             -mcpu=*)            echo -arch ${flag#*=}           ;;
2874             -mieee)             echo -ieee                      ;;
2875             -O*|-fast)          echo $flag                      ;;
2876             -fno-math-errno)    echo -assume nomath_errno       ;;
2877             -g)                 echo -g3                        ;;
2878             -Wall)              echo -msg_enable level2         ;;
2879             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2880             -Wl,*)              echo $flag                      ;;
2881             -f*|-W*)                                            ;;
2882             *)                  echo $flag                      ;;
2883         esac
2884    done
2885 }
2886
2887 cparser_flags(){
2888     for flag; do
2889         case $flag in
2890             -Wno-switch)             echo -Wno-switch-enum ;;
2891             -Wno-format-zero-length) ;;
2892             -Wdisabled-optimization) ;;
2893             -Wno-pointer-sign)       echo -Wno-other ;;
2894             *)                       echo $flag ;;
2895         esac
2896     done
2897 }
2898
2899 msvc_common_flags(){
2900     for flag; do
2901         case $flag in
2902             # In addition to specifying certain flags under the compiler
2903             # specific filters, they must be specified here as well or else the
2904             # generic catch all at the bottom will print the original flag.
2905             -Wall)                ;;
2906             -std=c99)             ;;
2907             # Common flags
2908             -fomit-frame-pointer) ;;
2909             -g)                   echo -Z7 ;;
2910             -fno-math-errno)      ;;
2911             -fno-common)          ;;
2912             -fno-signed-zeros)    ;;
2913             -fPIC)                ;;
2914             -mthumb)              ;;
2915             -march=*)             ;;
2916             -lz)                  echo zlib.lib ;;
2917             -lavifil32)           echo vfw32.lib ;;
2918             -lavicap32)           echo vfw32.lib user32.lib ;;
2919             -l*)                  echo ${flag#-l}.lib ;;
2920             *)                    echo $flag ;;
2921         esac
2922     done
2923 }
2924
2925 msvc_flags(){
2926     msvc_common_flags "$@"
2927     for flag; do
2928         case $flag in
2929             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2930                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2931                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2932                                        -wd4554 \
2933                                        -wd4273 ;;
2934         esac
2935     done
2936 }
2937
2938 icl_flags(){
2939     msvc_common_flags "$@"
2940     for flag; do
2941         case $flag in
2942             # Despite what Intel's documentation says -Wall, which is supported
2943             # on Windows, does enable remarks so disable them here.
2944             -Wall)                echo $flag -Qdiag-disable:remark ;;
2945             -std=c99)             echo -Qstd=c99 ;;
2946         esac
2947     done
2948 }
2949
2950 pgi_flags(){
2951     for flag; do
2952         case $flag in
2953             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2954             -fomit-frame-pointer) echo -Mnoframe ;;
2955             -g)                   echo -gopt ;;
2956             *)                    echo $flag ;;
2957         esac
2958     done
2959 }
2960
2961 suncc_flags(){
2962     for flag; do
2963         case $flag in
2964             -march=*|-mcpu=*)
2965                 case "${flag#*=}" in
2966                     native)                   echo -xtarget=native       ;;
2967                     v9|niagara)               echo -xarch=sparc          ;;
2968                     ultrasparc)               echo -xarch=sparcvis       ;;
2969                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2970                     i586|pentium)             echo -xchip=pentium        ;;
2971                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2972                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2973                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2974                     pentium4*)          echo -xtarget=pentium4           ;;
2975                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2976                     *-sse3)             echo -xarch=sse3                 ;;
2977                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2978                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2979                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2980                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2981                     bdver*)                    echo -xarch=avx           ;;
2982                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2983                     k8|opteron|athlon64|athlon-fx)
2984                                                echo -xarch=sse2a         ;;
2985                     athlon*)                   echo -xarch=pentium_proa  ;;
2986                 esac
2987                 ;;
2988             -std=c99)             echo -xc99              ;;
2989             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2990             -fPIC)                echo -KPIC -xcode=pic32 ;;
2991             -W*,*)                echo $flag              ;;
2992             -f*-*|-W*|-mimpure-text)                      ;;
2993             -shared)              echo -G                 ;;
2994             *)                    echo $flag              ;;
2995         esac
2996     done
2997 }
2998
2999 tms470_flags(){
3000     for flag; do
3001         case $flag in
3002             -march=*|-mcpu=*)
3003                 case "${flag#*=}" in
3004                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3005                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3006                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3007                     armv6*|arm11*)          echo -mv=6   ;;
3008                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3009                                             echo -mv=5e  ;;
3010                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3011                 esac
3012                 ;;
3013             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3014             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3015             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3016             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3017             -msoft-float)   echo --float_support=vfplib       ;;
3018             -O[0-3]|-mf=*)  echo $flag                        ;;
3019             -g)             echo -g -mn                       ;;
3020             -pds=*)         echo $flag                        ;;
3021             -D*|-I*)        echo $flag                        ;;
3022             --gcc|--abi=*)  echo $flag                        ;;
3023             -me)            echo $flag                        ;;
3024         esac
3025     done
3026 }
3027
3028 probe_cc(){
3029     pfx=$1
3030     _cc=$2
3031
3032     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3033     unset _ld_o _ldflags _ld_lib _ld_path
3034     unset _depflags _DEPCMD _DEPFLAGS
3035     _flags_filter=echo
3036
3037     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3038         true # no-op to avoid reading stdin in following checks
3039     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3040         _type=llvm_gcc
3041         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3042         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3043         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3044         _cflags_speed='-O3'
3045         _cflags_size='-Os'
3046     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3047         _type=gcc
3048         gcc_version=$($_cc --version | head -n1)
3049         gcc_basever=$($_cc -dumpversion)
3050         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3051         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3052         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3053         if ! $_cc -dumpversion | grep -q '^2\.'; then
3054             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3055         fi
3056         _cflags_speed='-O3'
3057         _cflags_size='-Os'
3058     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3059         _type=icc
3060         _ident=$($_cc --version | head -n1)
3061         _depflags='-MMD'
3062         _cflags_speed='-O3'
3063         _cflags_size='-Os'
3064         _cflags_noopt='-O1'
3065     elif $_cc -v 2>&1 | grep -q xlc; then
3066         _type=xlc
3067         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3068         _cflags_speed='-O5'
3069         _cflags_size='-O5 -qcompact'
3070     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3071         _type=ccc
3072         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3073         _DEPFLAGS='-M'
3074         _cflags_speed='-fast'
3075         _cflags_size='-O1'
3076         _flags_filter=ccc_flags
3077     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3078         test -d "$sysroot" || die "No valid sysroot specified."
3079         _type=armcc
3080         _ident=$($_cc --vsn | head -n1)
3081         armcc_conf="$PWD/armcc.conf"
3082         $_cc --arm_linux_configure                 \
3083              --arm_linux_config_file="$armcc_conf" \
3084              --configure_sysroot="$sysroot"        \
3085              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3086              die "Error creating armcc configuration file."
3087         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3088         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3089         as_default="${cross_prefix}gcc"
3090         _depflags='-MMD'
3091         _cflags_speed='-O3'
3092         _cflags_size='-Os'
3093     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3094         _type=tms470
3095         _ident=$($_cc -version | head -n1 | tr -s ' ')
3096         _flags='--gcc --abi=eabi -me'
3097         _cc_e='-ppl -fe=$@'
3098         _cc_o='-fe=$@'
3099         _depflags='-ppa -ppd=$(@:.o=.d)'
3100         _cflags_speed='-O3 -mf=5'
3101         _cflags_size='-O3 -mf=2'
3102         _flags_filter=tms470_flags
3103     elif $_cc -v 2>&1 | grep -q clang; then
3104         _type=clang
3105         _ident=$($_cc --version | head -n1)
3106         _depflags='-MMD'
3107         _cflags_speed='-O3'
3108         _cflags_size='-Os'
3109     elif $_cc -V 2>&1 | grep -q Sun; then
3110         _type=suncc
3111         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3112         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3113         _DEPFLAGS='-xM1 -xc99'
3114         _ldflags='-std=c99'
3115         _cflags_speed='-O5'
3116         _cflags_size='-O5 -xspace'
3117         _flags_filter=suncc_flags
3118     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3119         _type=pathscale
3120         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3121         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3122         _cflags_speed='-O2'
3123         _cflags_size='-Os'
3124         _flags_filter='filter_out -Wdisabled-optimization'
3125     elif $_cc -v 2>&1 | grep -q Open64; then
3126         _type=open64
3127         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3128         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3129         _cflags_speed='-O2'
3130         _cflags_size='-Os'
3131         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3132     elif $_cc -V 2>&1 | grep -q Portland; then
3133         _type=pgi
3134         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3135         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3136         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3137         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3138         _cflags_noopt="-O"
3139         _flags_filter=pgi_flags
3140     elif $_cc 2>&1 | grep -q Microsoft; then
3141         _type=msvc
3142         _ident=$($cc 2>&1 | head -n1)
3143         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3144         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3145         _cflags_speed="-O2"
3146         _cflags_size="-O1"
3147         if $_cc 2>&1 | grep -q Linker; then
3148             _ld_o='-out:$@'
3149         else
3150             _ld_o='-Fe$@'
3151         fi
3152         _cc_o='-Fo$@'
3153         _cc_e='-P -Fi$@'
3154         _flags_filter=msvc_flags
3155         _ld_lib='lib%.a'
3156         _ld_path='-libpath:'
3157         _flags='-nologo'
3158         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3159         if [ $pfx = hostcc ]; then
3160             append _cflags -Dsnprintf=_snprintf
3161         fi
3162         disable stripping
3163     elif $_cc 2>&1 | grep -q Intel; then
3164         _type=icl
3165         _ident=$($cc 2>&1 | head -n1)
3166         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3167         # Not only is O3 broken on 13.x+ but it is slower on all previous
3168         # versions (tested) as well.
3169         _cflags_speed="-O2"
3170         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3171         if $_cc 2>&1 | grep -q Linker; then
3172             _ld_o='-out:$@'
3173         else
3174             _ld_o='-Fe$@'
3175         fi
3176         _cc_o='-Fo$@'
3177         _cc_e='-P'
3178         _flags_filter=icl_flags
3179         _ld_lib='lib%.a'
3180         _ld_path='-libpath:'
3181         # -Qdiag-error to make icl error when seeing certain unknown arguments
3182         _flags='-nologo -Qdiag-error:4044,10157'
3183         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3184         # with MSVC which enables it by default.
3185         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3186         if [ $pfx = hostcc ]; then
3187             append _cflags -Dsnprintf=_snprintf
3188         fi
3189     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3190         _type=cparser
3191         _ident=$($_cc --version | head -n1)
3192         _depflags='-MMD'
3193         _cflags_speed='-O4'
3194         _cflags_size='-O2'
3195         _flags_filter=cparser_flags
3196     fi
3197
3198     eval ${pfx}_type=\$_type
3199     eval ${pfx}_ident=\$_ident
3200 }
3201
3202 set_ccvars(){
3203     eval ${1}_C=\${_cc_c-\${${1}_C}}
3204     eval ${1}_E=\${_cc_e-\${${1}_E}}
3205     eval ${1}_O=\${_cc_o-\${${1}_O}}
3206
3207     if [ -n "$_depflags" ]; then
3208         eval ${1}_DEPFLAGS=\$_depflags
3209     else
3210         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3211         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3212         eval DEP${1}FLAGS=\$_flags
3213     fi
3214 }
3215
3216 probe_cc cc "$cc"
3217 cflags_filter=$_flags_filter
3218 cflags_speed=$_cflags_speed
3219 cflags_size=$_cflags_size
3220 cflags_noopt=$_cflags_noopt
3221 add_cflags $_flags $_cflags
3222 cc_ldflags=$_ldflags
3223 set_ccvars CC
3224
3225 probe_cc hostcc "$host_cc"
3226 host_cflags_filter=$_flags_filter
3227 add_host_cflags  $_flags $_cflags
3228 set_ccvars HOSTCC
3229
3230 test -n "$cc_type" && enable $cc_type ||
3231     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3232
3233 : ${as_default:=$cc}
3234 : ${dep_cc_default:=$cc}
3235 : ${ld_default:=$cc}
3236 : ${host_ld_default:=$host_cc}
3237 set_default ar as dep_cc ld host_ld windres
3238
3239 probe_cc as "$as"
3240 asflags_filter=$_flags_filter
3241 add_asflags $_flags $_cflags
3242 set_ccvars AS
3243
3244 probe_cc ld "$ld"
3245 ldflags_filter=$_flags_filter
3246 add_ldflags $_flags $_ldflags
3247 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3248 LD_O=${_ld_o-$LD_O}
3249 LD_LIB=${_ld_lib-$LD_LIB}
3250 LD_PATH=${_ld_path-$LD_PATH}
3251
3252 probe_cc hostld "$host_ld"
3253 host_ldflags_filter=$_flags_filter
3254 add_host_ldflags $_flags $_ldflags
3255 HOSTLD_O=${_ld_o-$HOSTLD_O}
3256
3257 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3258     probe_cc depcc "$dep_cc"
3259     CCDEP=${_DEPCMD:-$DEPCMD}
3260     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3261     DEPCCFLAGS=$_flags
3262 fi
3263
3264 if $ar 2>&1 | grep -q Microsoft; then
3265     arflags="-nologo"
3266     ar_o='-out:$@'
3267 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3268     arflags="rq"
3269     ar_o='$@'
3270 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3271     arflags='-Xany -r -c'
3272     ar_o='$@'
3273 else
3274     arflags="rc"
3275     ar_o='$@'
3276 fi
3277
3278 add_cflags $extra_cflags
3279 add_cxxflags $extra_cxxflags
3280 add_asflags $extra_cflags
3281
3282 if test -n "$sysroot"; then
3283     case "$cc_type" in
3284         gcc|llvm_gcc|clang)
3285             add_cppflags --sysroot="$sysroot"
3286             add_ldflags --sysroot="$sysroot"
3287         ;;
3288         tms470)
3289             add_cppflags -I"$sysinclude"
3290             add_ldflags  --sysroot="$sysroot"
3291         ;;
3292     esac
3293 fi
3294
3295 if test "$cpu" = host; then
3296     enabled cross_compile &&
3297         die "--cpu=host makes no sense when cross-compiling."
3298
3299     case "$cc_type" in
3300         gcc|llvm_gcc)
3301             check_native(){
3302                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3303                 sed -n "/cc1.*$1=/{
3304                             s/.*$1=\\([^ ]*\\).*/\\1/
3305                             p
3306                             q
3307                         }" $TMPE
3308             }
3309             cpu=$(check_native -march || check_native -mcpu)
3310         ;;
3311     esac
3312
3313     test "${cpu:-host}" = host &&
3314         die "--cpu=host not supported with compiler $cc"
3315 fi
3316
3317 # Deal with common $arch aliases
3318 case "$arch" in
3319     aarch64|arm64)
3320         arch="aarch64"
3321     ;;
3322     arm*|iPad*|iPhone*)
3323         arch="arm"
3324     ;;
3325     mips*|IP*)
3326         arch="mips"
3327     ;;
3328     parisc*|hppa*)
3329         arch="parisc"
3330     ;;
3331     "Power Macintosh"|ppc*|powerpc*)
3332         arch="ppc"
3333     ;;
3334     s390|s390x)
3335         arch="s390"
3336     ;;
3337     sh4|sh)
3338         arch="sh4"
3339     ;;
3340     sun4u|sparc*)
3341         arch="sparc"
3342     ;;
3343     tilegx|tile-gx)
3344         arch="tilegx"
3345     ;;
3346     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3347         arch="x86"
3348     ;;
3349 esac
3350
3351 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3352 enable $arch
3353
3354 # Add processor-specific flags
3355 if enabled aarch64; then
3356
3357     case $cpu in
3358         armv*)
3359             cpuflags="-march=$cpu"
3360         ;;
3361         *)
3362             cpuflags="-mcpu=$cpu"
3363         ;;
3364     esac
3365
3366 elif enabled alpha; then
3367
3368     cpuflags="-mcpu=$cpu"
3369
3370 elif enabled arm; then
3371
3372     check_arm_arch() {
3373         check_cpp_condition stddef.h \
3374             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3375             $cpuflags
3376     }
3377
3378     probe_arm_arch() {
3379         if   check_arm_arch 4;        then echo armv4;
3380         elif check_arm_arch 4T;       then echo armv4t;
3381         elif check_arm_arch 5;        then echo armv5;
3382         elif check_arm_arch 5E;       then echo armv5e;
3383         elif check_arm_arch 5T;       then echo armv5t;
3384         elif check_arm_arch 5TE;      then echo armv5te;
3385         elif check_arm_arch 5TEJ;     then echo armv5te;
3386         elif check_arm_arch 6;        then echo armv6;
3387         elif check_arm_arch 6J;       then echo armv6j;
3388         elif check_arm_arch 6K;       then echo armv6k;
3389         elif check_arm_arch 6Z;       then echo armv6z;
3390         elif check_arm_arch 6ZK;      then echo armv6zk;
3391         elif check_arm_arch 6T2;      then echo armv6t2;
3392         elif check_arm_arch 7;        then echo armv7;
3393         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3394         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3395         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3396         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3397         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3398         fi
3399     }
3400
3401     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3402
3403     case $cpu in
3404         armv*)
3405             cpuflags="-march=$cpu"
3406             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3407         ;;
3408         *)
3409             cpuflags="-mcpu=$cpu"
3410             case $cpu in
3411                 cortex-a*)                               subarch=armv7a  ;;
3412                 cortex-r*)                               subarch=armv7r  ;;
3413                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3414                 arm11*)                                  subarch=armv6   ;;
3415                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3416                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3417                 *)                             subarch=$(probe_arm_arch) ;;
3418             esac
3419         ;;
3420     esac
3421
3422     case "$subarch" in
3423         armv5t*)    enable fast_clz                ;;
3424         armv[6-8]*) enable fast_clz fast_unaligned ;;
3425     esac
3426
3427 elif enabled avr32; then
3428
3429     case $cpu in
3430         ap7[02]0[0-2])
3431             subarch="avr32_ap"
3432             cpuflags="-mpart=$cpu"
3433         ;;
3434         ap)
3435             subarch="avr32_ap"
3436             cpuflags="-march=$cpu"
3437         ;;
3438         uc3[ab]*)
3439             subarch="avr32_uc"
3440             cpuflags="-mcpu=$cpu"
3441         ;;
3442         uc)
3443             subarch="avr32_uc"
3444             cpuflags="-march=$cpu"
3445         ;;
3446     esac
3447
3448 elif enabled bfin; then
3449
3450     cpuflags="-mcpu=$cpu"
3451
3452 elif enabled mips; then
3453
3454     cpuflags="-march=$cpu"
3455
3456     case $cpu in
3457         24kc)
3458             disable mipsfpu
3459             disable mipsdspr1
3460             disable mipsdspr2
3461         ;;
3462         24kf*)
3463             disable mipsdspr1
3464             disable mipsdspr2
3465         ;;
3466         24kec|34kc|1004kc)
3467             disable mipsfpu
3468             disable mipsdspr2
3469         ;;
3470         24kef*|34kf*|1004kf*)
3471             disable mipsdspr2
3472         ;;
3473         74kc)
3474             disable mipsfpu
3475         ;;
3476     esac
3477
3478 elif enabled ppc; then
3479
3480     case $(tolower $cpu) in
3481         601|ppc601|powerpc601)
3482             cpuflags="-mcpu=601"
3483             disable altivec
3484         ;;
3485         603*|ppc603*|powerpc603*)
3486             cpuflags="-mcpu=603"
3487             disable altivec
3488         ;;
3489         604*|ppc604*|powerpc604*)
3490             cpuflags="-mcpu=604"
3491             disable altivec
3492         ;;
3493         g3|75*|ppc75*|powerpc75*)
3494             cpuflags="-mcpu=750"
3495             disable altivec
3496         ;;
3497         g4|745*|ppc745*|powerpc745*)
3498             cpuflags="-mcpu=7450"
3499         ;;
3500         74*|ppc74*|powerpc74*)
3501             cpuflags="-mcpu=7400"
3502         ;;
3503         g5|970|ppc970|powerpc970)
3504             cpuflags="-mcpu=970"
3505         ;;
3506         power[3-7]*)
3507             cpuflags="-mcpu=$cpu"
3508         ;;
3509         cell)
3510             cpuflags="-mcpu=cell"
3511             enable ldbrx
3512         ;;
3513         e500mc)
3514             cpuflags="-mcpu=e500mc"
3515             disable altivec
3516         ;;
3517         e500v2)
3518             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3519             disable altivec
3520         ;;
3521         e500)
3522             cpuflags="-mcpu=8540 -mhard-float"
3523             disable altivec
3524         ;;
3525     esac
3526
3527 elif enabled sparc; then
3528
3529     case $cpu in
3530         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3531             cpuflags="-mcpu=$cpu"
3532             disable vis
3533         ;;
3534         ultrasparc*|niagara[234])
3535             cpuflags="-mcpu=$cpu"
3536         ;;
3537     esac
3538
3539 elif enabled x86; then
3540
3541     case $cpu in
3542         i[345]86|pentium)
3543             cpuflags="-march=$cpu"
3544             disable mmx
3545         ;;
3546         # targets that do NOT support nopl and conditional mov (cmov)
3547         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3548             cpuflags="-march=$cpu"
3549             disable i686
3550         ;;
3551         # targets that do support nopl and conditional mov (cmov)
3552         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3553             cpuflags="-march=$cpu"
3554             enable i686
3555             enable fast_cmov
3556         ;;
3557         # targets that do support conditional mov but on which it's slow
3558         pentium4|pentium4m|prescott|nocona)
3559             cpuflags="-march=$cpu"
3560             enable i686
3561             disable fast_cmov
3562         ;;
3563     esac
3564
3565 fi
3566
3567 if [ "$cpu" != generic ]; then
3568     add_cflags  $cpuflags
3569     add_asflags $cpuflags
3570 fi
3571
3572 # compiler sanity check
3573 check_exec <<EOF
3574 int main(void){ return 0; }
3575 EOF
3576 if test "$?" != 0; then
3577     echo "$cc is unable to create an executable file."
3578     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3579         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3580         echo "Only do this if you know what cross compiling means."
3581     fi
3582     die "C compiler test failed."
3583 fi
3584
3585 add_cppflags -D_ISOC99_SOURCE
3586 add_cxxflags -D__STDC_CONSTANT_MACROS
3587 check_cflags -std=c99
3588 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3589 #include <stdlib.h>
3590 EOF
3591 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3592 #include <stdlib.h>
3593 EOF
3594
3595 check_host_cflags -std=c99
3596 check_host_cflags -Wall
3597
3598 check_64bit(){
3599     arch32=$1
3600     arch64=$2
3601     expr=$3
3602     check_code cc "" "int test[2*($expr) - 1]" &&
3603         subarch=$arch64 || subarch=$arch32
3604 }
3605
3606 case "$arch" in
3607     aarch64|alpha|ia64)
3608         spic=$shared
3609     ;;
3610     mips)
3611         check_64bit mips mips64 '_MIPS_SIM > 1'
3612         spic=$shared
3613     ;;
3614     parisc)
3615         check_64bit parisc parisc64 'sizeof(void *) > 4'
3616         spic=$shared
3617     ;;
3618     ppc)
3619         check_64bit ppc ppc64 'sizeof(void *) > 4'
3620         spic=$shared
3621     ;;
3622     sparc)
3623         check_64bit sparc sparc64 'sizeof(void *) > 4'
3624         spic=$shared
3625     ;;
3626     x86)
3627         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3628         if test "$subarch" = "x86_64"; then
3629             spic=$shared
3630         fi
3631     ;;
3632     ppc)
3633         check_cc <<EOF && subarch="ppc64"
3634         int test[(int)sizeof(char*) - 7];
3635 EOF
3636     ;;
3637 esac
3638
3639 enable $subarch
3640 enabled spic && enable_weak pic
3641
3642 # OS specific
3643 case $target_os in
3644     aix)
3645         SHFLAGS=-shared
3646         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3647         enabled shared && add_ldflags -Wl,-brtl
3648         ;;
3649     haiku)
3650         prefix_default="/boot/common"
3651         network_extralibs="-lnetwork"
3652         host_libs=
3653         ;;
3654     sunos)
3655         SHFLAGS='-shared -Wl,-h,$$(@F)'
3656         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3657         network_extralibs="-lsocket -lnsl"
3658         # When using suncc to build, the Solaris linker will mark
3659         # an executable with each instruction set encountered by
3660         # the Solaris assembler.  As our libraries contain their own
3661         # guards for processor-specific code, instead suppress
3662         # generation of the HWCAPS ELF section on Solaris x86 only.
3663         enabled_all suncc x86 &&
3664             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3665             add_ldflags -Wl,-M,mapfile
3666         nm_default='nm -P -g'
3667         ;;
3668     netbsd)
3669         disable symver
3670         oss_indev_extralibs="-lossaudio"
3671         oss_outdev_extralibs="-lossaudio"
3672         enabled gcc || check_ldflags -Wl,-zmuldefs
3673         ;;
3674     openbsd|bitrig)
3675         disable symver
3676         SHFLAGS='-shared'
3677         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3678         SLIB_INSTALL_LINKS=
3679         oss_indev_extralibs="-lossaudio"
3680         oss_outdev_extralibs="-lossaudio"
3681         ;;
3682     dragonfly)
3683         disable symver
3684         ;;
3685     freebsd)
3686         ;;
3687     bsd/os)
3688         add_extralibs -lpoll -lgnugetopt
3689         strip="strip -d"
3690         ;;
3691     darwin)
3692         gas="gas-preprocessor.pl $cc"
3693         enabled ppc && add_asflags -force_cpusubtype_ALL
3694         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3695         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3696         strip="${strip} -x"
3697         add_ldflags -Wl,-dynamic,-search_paths_first
3698         SLIBSUF=".dylib"
3699         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3700         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3701         objformat="macho"
3702         enabled x86_64 && objformat="macho64"
3703         enabled_any pic shared ||
3704             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3705         ;;
3706     mingw32*)
3707         if test $target_os = "mingw32ce"; then
3708             disable network
3709         else
3710             target_os=mingw32
3711         fi
3712         LIBTARGET=i386
3713         if enabled x86_64; then
3714             LIBTARGET="i386:x86-64"
3715         elif enabled arm; then
3716             LIBTARGET=arm-wince
3717         fi
3718         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3719         check_ldflags -Wl,--nxcompat
3720         check_ldflags -Wl,--dynamicbase
3721         shlibdir_default="$bindir_default"
3722         SLIBPREF=""
3723         SLIBSUF=".dll"
3724         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3725         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3726         dlltool="${cross_prefix}dlltool"
3727         if check_cmd lib.exe -list; then
3728             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3729             if enabled x86_64; then
3730                 LIBTARGET=x64
3731             fi
3732         elif check_cmd $dlltool --version; then
3733             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3734         fi
3735         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3736         SLIB_INSTALL_LINKS=
3737         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3738         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3739         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3740         objformat="win32"
3741         ranlib=:
3742         enable dos_paths
3743         ;;
3744     win32|win64)
3745         disable symver
3746         if enabled shared; then
3747             # Link to the import library instead of the normal static library
3748             # for shared libs.
3749             LD_LIB='%.lib'
3750             # Cannot build both shared and static libs with MSVC or icl.
3751             disable static
3752         fi
3753         shlibdir_default="$bindir_default"
3754         SLIBPREF=""
3755         SLIBSUF=".dll"
3756         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3757         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3758         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3759         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3760         SLIB_INSTALL_LINKS=
3761         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3762         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3763         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3764         objformat="win32"
3765         ranlib=:
3766         enable dos_paths
3767         ;;
3768     cygwin*)
3769         target_os=cygwin
3770         shlibdir_default="$bindir_default"
3771         SLIBPREF="cyg"
3772         SLIBSUF=".dll"
3773         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3774         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3775         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3776         SLIB_INSTALL_LINKS=
3777         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3778         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3779         objformat="win32"
3780         enable dos_paths
3781         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3782         ;;
3783     *-dos|freedos|opendos)
3784         network_extralibs="-lsocket"
3785         objformat="coff"
3786         enable dos_paths
3787         add_cppflags -U__STRICT_ANSI__
3788         ;;
3789     linux)
3790         enable dv1394
3791         ;;
3792     irix*)
3793         target_os=irix
3794         ranlib="echo ignoring ranlib"
3795         ;;
3796     os/2*)
3797         strip="lxlite -CS"
3798         ln_s="cp -f"
3799         objformat="aout"
3800         add_cppflags -D_GNU_SOURCE
3801         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3802         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3803         LIBSUF="_s.a"
3804         SLIBPREF=""
3805         SLIBSUF=".dll"
3806         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3807         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3808         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3809             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3810             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3811             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3812             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3813             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3814         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3815             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3816         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3817         enable dos_paths
3818         enable_weak os2threads
3819         ;;
3820     gnu/kfreebsd)
3821         add_cppflags -D_BSD_SOURCE
3822         ;;
3823     gnu)
3824         ;;
3825     qnx)
3826         add_cppflags -D_QNX_SOURCE
3827         network_extralibs="-lsocket"
3828         ;;
3829     symbian)
3830         SLIBSUF=".dll"
3831         enable dos_paths
3832         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3833         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3834         add_ldflags -Wl,--target1-abs,--no-undefined \
3835                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3836                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3837         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3838                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3839                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3840         ;;
3841     osf1)
3842         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3843         ;;
3844     minix)
3845         ;;
3846     plan9)
3847         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3848                      -D_REENTRANT_SOURCE        \
3849                      -D_RESEARCH_SOURCE         \
3850                      -DFD_SETSIZE=96            \
3851                      -DHAVE_SOCK_OPTS
3852         add_compat strtod.o strtod=avpriv_strtod
3853         network_extralibs='-lbsd'
3854         exeobjs=compat/plan9/main.o
3855         disable ffserver
3856         cp_f='cp'
3857         ;;
3858     none)
3859         ;;
3860     *)
3861         die "Unknown OS '$target_os'."
3862         ;;
3863 esac
3864
3865 # determine libc flavour
3866
3867 probe_libc(){
3868     pfx=$1
3869     pfx_no_=${pfx%_}
3870     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3871     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3872         eval ${pfx}libc_type=uclibc
3873         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3874     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3875         eval ${pfx}libc_type=glibc
3876         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3877     # MinGW headers can be installed on Cygwin, so check for newlib first.
3878     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3879         eval ${pfx}libc_type=newlib
3880         add_${pfx}cppflags -U__STRICT_ANSI__
3881     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3882     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3883         eval ${pfx}libc_type=mingw64
3884         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3885             add_compat msvcrt/snprintf.o
3886             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3887         fi
3888         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3889         eval test \$${pfx_no_}cc_type = "gcc" &&
3890             add_${pfx}cppflags -D__printf__=__gnu_printf__
3891     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3892          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3893         eval ${pfx}libc_type=mingw32
3894         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3895             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3896             die "ERROR: MinGW32 runtime version must be >= 3.15."
3897         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3898         eval test \$${pfx_no_}cc_type = "gcc" &&
3899             add_${pfx}cppflags -D__printf__=__gnu_printf__
3900     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3901         eval ${pfx}libc_type=msvcrt
3902         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3903         # 0x601 by default unless something else is set by the user.
3904         # This can easily lead to us detecting functions only present
3905         # in such new versions and producing binaries requiring windows 7.0.
3906         # Therefore explicitly set the default to XP unless the user has
3907         # set something else on the command line.
3908         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3909             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3910     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3911         eval ${pfx}libc_type=klibc
3912     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3913         eval ${pfx}libc_type=bionic
3914     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3915         eval ${pfx}libc_type=solaris
3916         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3917     fi
3918 }
3919
3920 probe_libc
3921 test -n "$libc_type" && enable libc_$libc_type
3922 probe_libc host_
3923 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3924
3925 case $libc_type in
3926     bionic)
3927         add_compat strtod.o strtod=avpriv_strtod
3928         ;;
3929     msvcrt)
3930         add_compat strtod.o strtod=avpriv_strtod
3931         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3932                                      _snprintf=avpriv_snprintf  \
3933                                      vsnprintf=avpriv_vsnprintf
3934         ;;
3935 esac
3936
3937 # hacks for compiler/libc/os combinations
3938
3939 if enabled_all tms470 libc_glibc; then
3940     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3941     add_cppflags -D__USER_LABEL_PREFIX__=
3942     add_cppflags -D__builtin_memset=memset
3943     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3944     add_cflags   -pds=48    # incompatible redefinition of macro
3945 fi
3946
3947 if enabled_all ccc libc_glibc; then
3948     add_ldflags -Wl,-z,now  # calls to libots crash without this
3949 fi
3950
3951 esc(){
3952     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3953 }
3954
3955 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3956
3957 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3958
3959 set_default $PATHS_LIST
3960 set_default nm
3961
3962 # we need to build at least one lib type
3963 if ! enabled_any static shared; then
3964     cat <<EOF
3965 At least one library type must be built.
3966 Specify --enable-static to build the static libraries or --enable-shared to
3967 build the shared libraries as well. To only build the shared libraries specify
3968 --disable-static in addition to --enable-shared.
3969 EOF
3970     exit 1;
3971 fi
3972
3973 # backward compatibility layer for incompatible_libav/fork_abi
3974 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3975 enabled incompatible_libav_abi && enable incompatible_fork_abi
3976
3977 die_license_disabled() {
3978     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3979 }
3980
3981 die_license_disabled_gpl() {
3982     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3983 }
3984
3985 die_license_disabled gpl frei0r
3986 die_license_disabled gpl libcdio
3987 die_license_disabled gpl libutvideo
3988 die_license_disabled gpl libvidstab
3989 die_license_disabled gpl libx264
3990 die_license_disabled gpl libxavs
3991 die_license_disabled gpl libxvid
3992 die_license_disabled gpl libzvbi
3993 die_license_disabled gpl x11grab
3994
3995 die_license_disabled nonfree libaacplus
3996 die_license_disabled nonfree libfaac
3997 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3998 enabled gpl && die_license_disabled_gpl nonfree openssl
3999
4000 die_license_disabled version3 libopencore_amrnb
4001 die_license_disabled version3 libopencore_amrwb
4002 die_license_disabled version3 libvo_aacenc
4003 die_license_disabled version3 libvo_amrwbenc
4004
4005 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4006
4007 disabled optimizations || check_cflags -fomit-frame-pointer
4008
4009 enable_weak_pic() {
4010     disabled pic && return
4011     enable pic
4012     add_cppflags -DPIC
4013     case "$target_os" in
4014     mingw*|cygwin*)
4015         ;;
4016     *)
4017         add_cflags -fPIC
4018         ;;
4019     esac
4020     add_asflags  -fPIC
4021 }
4022
4023 enabled pic && enable_weak_pic
4024
4025 check_cc <<EOF || die "Symbol mangling check failed."
4026 int ff_extern;
4027 EOF
4028 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4029 extern_prefix=${sym%%ff_extern*}
4030
4031 check_cc <<EOF && enable_weak inline_asm
4032 void foo(void) { __asm__ volatile ("" ::); }
4033 EOF
4034
4035 _restrict=
4036 for restrict_keyword in restrict __restrict__ __restrict; do
4037     check_cc <<EOF && _restrict=$restrict_keyword && break
4038 void foo(char * $restrict_keyword p);
4039 EOF
4040 done
4041
4042 check_cc <<EOF && enable pragma_deprecated
4043 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4044 EOF