truemotion1: use av_freep()
[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   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
106   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-ffmpeg         disable ffmpeg build
111   --disable-ffplay         disable ffplay build
112   --disable-ffprobe        disable ffprobe build
113   --disable-ffserver       disable ffserver build
114
115 Documentation options:
116   --disable-doc            do not build documentation
117   --disable-htmlpages      do not build HTML documentation pages
118   --disable-manpages       do not build man documentation pages
119   --disable-podpages       do not build POD documentation pages
120   --disable-txtpages       do not build text documentation pages
121
122 Component options:
123   --disable-avdevice       disable libavdevice build
124   --disable-avcodec        disable libavcodec build
125   --disable-avformat       disable libavformat build
126   --disable-avutil         disable libavutil build
127   --disable-swresample     disable libswresample build
128   --disable-swscale        disable libswscale build
129   --disable-postproc       disable libpostproc build
130   --disable-avfilter       disable libavfilter build
131   --enable-avresample      enable libavresample build [no]
132   --disable-pthreads       disable pthreads [auto]
133   --disable-w32threads     disable Win32 threads [auto]
134   --disable-os2threads     disable OS/2 threads [auto]
135   --disable-network        disable network support [no]
136   --disable-dct            disable DCT code
137   --disable-dwt            disable DWT code
138   --disable-error-resilience disable error resilience code
139   --disable-lsp            disable LSP code
140   --disable-lzo            disable LZO decoder code
141   --disable-mdct           disable MDCT code
142   --disable-rdft           disable RDFT code
143   --disable-fft            disable FFT code
144
145 Hardware accelerators:
146   --disable-dxva2          disable DXVA2 code [autodetect]
147   --disable-vaapi          disable VAAPI code [autodetect]
148   --enable-vda             enable VDA code
149   --disable-vdpau          disable VDPAU code [autodetect]
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189   --enable-avisynth        enable reading of AviSynth script files [no]
190   --disable-bzlib          disable bzlib [autodetect]
191   --enable-fontconfig      enable fontconfig
192   --enable-frei0r          enable frei0r video filtering
193   --enable-gnutls          enable gnutls [no]
194   --disable-iconv          disable iconv [autodetect]
195   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
196   --enable-libass          enable libass subtitles rendering [no]
197   --enable-libbluray       enable BluRay reading using libbluray [no]
198   --enable-libcaca         enable textual display using libcaca
199   --enable-libcelt         enable CELT decoding via libcelt [no]
200   --enable-libcdio         enable audio CD grabbing with libcdio
201   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
202                            and libraw1394 [no]
203   --enable-libfaac         enable AAC encoding via libfaac [no]
204   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
205   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
206   --enable-libfreetype     enable libfreetype [no]
207   --enable-libgme          enable Game Music Emu via libgme [no]
208   --enable-libgsm          enable GSM de/encoding via libgsm [no]
209   --enable-libiec61883     enable iec61883 via libiec61883 [no]
210   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
211   --enable-libmodplug      enable ModPlug via libmodplug [no]
212   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
213   --enable-libnut          enable NUT (de)muxing via libnut,
214                            native (de)muxer exists [no]
215   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
216   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
217   --enable-libopencv       enable video filtering via libopencv [no]
218   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
219   --enable-libopus         enable Opus decoding via libopus [no]
220   --enable-libpulse        enable Pulseaudio input via libpulse [no]
221   --enable-libquvi         enable quvi input via libquvi [no]
222   --enable-librtmp         enable RTMP[E] support via librtmp [no]
223   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
224   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
225   --enable-libsoxr         enable Include libsoxr resampling [no]
226   --enable-libspeex        enable Speex de/encoding via libspeex [no]
227   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
228   --enable-libtheora       enable Theora encoding via libtheora [no]
229   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
230   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
231   --enable-libv4l2         enable libv4l2/v4l-utils [no]
232   --enable-libvidstab      enable video stabilization using vid.stab [no]
233   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
234   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
235   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
236                            native implementation exists [no]
237   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
238   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
239   --enable-libx264         enable H.264 encoding via x264 [no]
240   --enable-libxavs         enable AVS encoding via xavs [no]
241   --enable-libxvid         enable Xvid encoding via xvidcore,
242                            native MPEG-4/Xvid encoder exists [no]
243   --enable-libzmq          enable message passing via libzmq [no]
244   --enable-openal          enable OpenAL 1.1 capture support [no]
245   --enable-opencl          enable OpenCL code
246   --enable-openssl         enable openssl [no]
247   --enable-x11grab         enable X11 grabbing [no]
248   --disable-zlib           disable zlib [autodetect]
249
250 Advanced options (experts only):
251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
252   --enable-cross-compile   assume a cross-compiler is used
253   --sysroot=PATH           root of cross-build tree
254   --sysinclude=PATH        location of cross-build system headers
255   --target-os=OS           compiler targets OS [$target_os]
256   --target-exec=CMD        command to run executables on target
257   --target-path=DIR        path to view of build directory on target
258   --target-samples=DIR     path to samples directory on target
259   --toolchain=NAME         set tool defaults according to NAME
260   --nm=NM                  use nm tool NM [$nm_default]
261   --ar=AR                  use archive tool AR [$ar_default]
262   --as=AS                  use assembler AS [$as_default]
263   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
264   --cc=CC                  use C compiler CC [$cc_default]
265   --cxx=CXX                use C compiler CXX [$cxx_default]
266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
267   --ld=LD                  use linker LD [$ld_default]
268   --host-cc=HOSTCC         use host C compiler HOSTCC
269   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
270   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
271   --host-ld=HOSTLD         use host linker HOSTLD
272   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
273   --host-libs=HLIBS        use libs HLIBS when linking for host
274   --host-os=OS             compiler host OS [$target_os]
275   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
276   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
277   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
278   --extra-libs=ELIBS       add ELIBS [$ELIBS]
279   --extra-version=STRING   version string suffix []
280   --optflags=OPTFLAGS      override optimization-related compiler flags
281   --build-suffix=SUFFIX    library name suffix []
282   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
283   --progs-suffix=SUFFIX    program name suffix []
284   --arch=ARCH              select architecture [$arch]
285   --cpu=CPU                select the minimum required CPU (affects
286                            instruction selection, may crash on older CPUs)
287   --enable-pic             build position-independent code
288   --enable-sram            allow use of on-chip SRAM
289   --enable-thumb           compile for Thumb instruction set
290   --disable-symver         disable symbol versioning
291   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
292   --disable-safe-bitstream-reader
293                            disable buffer boundary checking in bitreaders
294                            (faster, but may crash)
295   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
296   --enable-lto             use link-time optimization
297
298 Optimization options (experts only):
299   --disable-asm            disable all assembler optimizations
300   --disable-altivec        disable AltiVec optimizations
301   --disable-amd3dnow       disable 3DNow! optimizations
302   --disable-amd3dnowext    disable 3DNow! extended optimizations
303   --disable-mmx            disable MMX optimizations
304   --disable-mmxext         disable MMXEXT optimizations
305   --disable-sse            disable SSE optimizations
306   --disable-sse2           disable SSE2 optimizations
307   --disable-sse3           disable SSE3 optimizations
308   --disable-ssse3          disable SSSE3 optimizations
309   --disable-sse4           disable SSE4 optimizations
310   --disable-sse42          disable SSE4.2 optimizations
311   --disable-avx            disable AVX optimizations
312   --disable-fma4           disable FMA4 optimizations
313   --disable-armv5te        disable armv5te optimizations
314   --disable-armv6          disable armv6 optimizations
315   --disable-armv6t2        disable armv6t2 optimizations
316   --disable-vfp            disable VFP optimizations
317   --disable-neon           disable NEON optimizations
318   --disable-vis            disable VIS optimizations
319   --disable-inline-asm     disable use of inline assembler
320   --disable-yasm           disable use of yasm assembler
321   --disable-mips32r2       disable MIPS32R2 optimizations
322   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
323   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
324   --disable-mipsfpu        disable floating point MIPS optimizations
325   --disable-fast-unaligned consider unaligned accesses slow
326
327 Developer options (useful when working on FFmpeg itself):
328   --disable-debug          disable debugging symbols
329   --enable-debug=LEVEL     set the debug level [$debuglevel]
330   --disable-optimizations  disable compiler optimizations
331   --enable-extra-warnings  enable more compiler warnings
332   --disable-stripping      disable stripping of executables and shared libraries
333   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
334                            2 causes a slowdown at runtime.
335   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
336   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
337                            leaks and errors, using the specified valgrind binary.
338                            Cannot be combined with --target-exec
339   --enable-ftrapv          Trap arithmetic overflows
340   --samples=PATH           location of test samples for FATE, if not set use
341                            \$FATE_SAMPLES at make invocation time.
342   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
343                            should be used only for debugging purposes)
344   --enable-random          randomly enable/disable components
345   --disable-random
346   --enable-random=LIST     randomly enable/disable specific components or
347   --disable-random=LIST    component groups. LIST is a comma-separated list
348                            of NAME[:PROB] entries where NAME is a component
349                            (group) and PROB the probability associated with
350                            NAME (default 0.5).
351   --random-seed=VALUE      seed value for --enable/disable-random
352
353 NOTE: Object files are built at the place where configure is launched.
354 EOF
355   exit 0
356 }
357
358 quotes='""'
359
360 log(){
361     echo "$@" >> $logfile
362 }
363
364 log_file(){
365     log BEGIN $1
366     pr -n -t $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case $v in $pat) echo $v ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case $v in $pat) ;; *) echo $v ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_safe(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_safe(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_safe(){
519     for var; do
520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
521     done
522 }
523
524 disable_safe(){
525     for var; do
526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op== || op=!=
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 do_check_deps(){
609     for cfg; do
610         cfg="${cfg#!}"
611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
612         disabled ${cfg}_checking && continue
613         enable ${cfg}_checking
614         append allopts $cfg
615
616         eval dep_all="\$${cfg}_deps"
617         eval dep_any="\$${cfg}_deps_any"
618         eval dep_sel="\$${cfg}_select"
619         eval dep_sgs="\$${cfg}_suggest"
620         eval dep_ifa="\$${cfg}_if"
621         eval dep_ifn="\$${cfg}_if_any"
622
623         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
624         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
625         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626
627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
629         enabled_all  $dep_all || disable $cfg
630         enabled_any  $dep_any || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         if enabled $cfg; then
634             enable_deep $dep_sel
635             enable_deep_weak $dep_sgs
636         fi
637
638         disable ${cfg}_checking
639     done
640 }
641
642 check_deps(){
643     unset allopts
644
645     do_check_deps "$@"
646
647     for cfg in $allopts; do
648         enabled $cfg || continue
649         eval dep_extralibs="\$${cfg}_extralibs"
650         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
651     done
652 }
653
654 print_config(){
655     pfx=$1
656     files=$2
657     shift 2
658     map 'eval echo "$v \${$v:-no}"' "$@" |
659     awk "BEGIN { split(\"$files\", files) }
660         {
661             c = \"$pfx\" toupper(\$1);
662             v = \$2;
663             sub(/yes/, 1, v);
664             sub(/no/,  0, v);
665             for (f in files) {
666                 file = files[f];
667                 if (file ~ /\\.h\$/) {
668                     printf(\"#define %s %d\\n\", c, v) >>file;
669                 } else if (file ~ /\\.asm\$/) {
670                     printf(\"%%define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.mak\$/) {
672                     n = -v ? \"\" : \"!\";
673                     printf(\"%s%s=yes\\n\", n, c) >>file;
674                 } else if (file ~ /\\.texi\$/) {
675                     pre = -v ? \"\" : \"@c \";
676                     yesno = \$2;
677                     c2 = tolower(c);
678                     gsub(/_/, \"-\", c2);
679                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
680                 }
681             }
682         }"
683 }
684
685 print_enabled(){
686     suf=$1
687     shift
688     for v; do
689         enabled $v && printf "%s\n" ${v%$suf};
690     done
691 }
692
693 append(){
694     var=$1
695     shift
696     eval "$var=\"\$$var $*\""
697 }
698
699 prepend(){
700     var=$1
701     shift
702     eval "$var=\"$* \$$var\""
703 }
704
705 add_cppflags(){
706     append CPPFLAGS "$@"
707 }
708
709 add_cflags(){
710     append CFLAGS $($cflags_filter "$@")
711 }
712
713 add_cxxflags(){
714     append CXXFLAGS $($cflags_filter "$@")
715 }
716
717 add_asflags(){
718     append ASFLAGS $($asflags_filter "$@")
719 }
720
721 add_ldflags(){
722     append LDFLAGS $($ldflags_filter "$@")
723 }
724
725 add_extralibs(){
726     prepend extralibs $($ldflags_filter "$@")
727 }
728
729 add_host_cppflags(){
730     append host_cppflags "$@"
731 }
732
733 add_host_cflags(){
734     append host_cflags $($host_cflags_filter "$@")
735 }
736
737 add_host_ldflags(){
738     append host_ldflags $($host_ldflags_filter "$@")
739 }
740
741 add_compat(){
742     append compat_objs $1
743     shift
744     map 'add_cppflags -D$v' "$@"
745 }
746
747 check_cmd(){
748     log "$@"
749     "$@" >> $logfile 2>&1
750 }
751
752 cc_o(){
753     eval printf '%s\\n' $CC_O
754 }
755
756 cc_e(){
757     eval printf '%s\\n' $CC_E
758 }
759
760 check_cc(){
761     log check_cc "$@"
762     cat > $TMPC
763     log_file $TMPC
764     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
765 }
766
767 check_cxx(){
768     log check_cxx "$@"
769     cat > $TMPCPP
770     log_file $TMPCPP
771     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
772 }
773
774 check_cpp(){
775     log check_cpp "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
779 }
780
781 as_o(){
782     eval printf '%s\\n' $AS_O
783 }
784
785 check_as(){
786     log check_as "$@"
787     cat > $TMPS
788     log_file $TMPS
789     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
790 }
791
792 check_inline_asm(){
793     log check_inline_asm "$@"
794     name="$1"
795     code="$2"
796     shift 2
797     disable $name
798     check_cc "$@" <<EOF && enable $name
799 void foo(void){ __asm__ volatile($code); }
800 EOF
801 }
802
803 check_insn(){
804     log check_insn "$@"
805     check_inline_asm ${1}_inline "\"$2\""
806     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
807 }
808
809 check_yasm(){
810     log check_yasm "$@"
811     echo "$1" > $TMPS
812     log_file $TMPS
813     shift 1
814     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
815 }
816
817 ld_o(){
818     eval printf '%s\\n' $LD_O
819 }
820
821 check_ld(){
822     log check_ld "$@"
823     type=$1
824     shift 1
825     flags=$(filter_out '-l*|*.so' $@)
826     libs=$(filter '-l*|*.so' $@)
827     check_$type $($cflags_filter $flags) || return
828     flags=$($ldflags_filter $flags)
829     libs=$($ldflags_filter $libs)
830     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
831 }
832
833 check_code(){
834     log check_code "$@"
835     check=$1
836     headers=$2
837     code=$3
838     shift 3
839     {
840         for hdr in $headers; do
841             echo "#include <$hdr>"
842         done
843         echo "int main(void) { $code; return 0; }"
844     } | check_$check "$@"
845 }
846
847 check_cppflags(){
848     log check_cppflags "$@"
849     check_cc "$@" <<EOF && append CPPFLAGS "$@"
850 int x;
851 EOF
852 }
853
854 check_cflags(){
855     log check_cflags "$@"
856     set -- $($cflags_filter "$@")
857     check_cc "$@" <<EOF && append CFLAGS "$@"
858 int x;
859 EOF
860 }
861
862 check_cxxflags(){
863     log check_cxxflags "$@"
864     set -- $($cflags_filter "$@")
865     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
866 int x;
867 EOF
868 }
869
870 test_ldflags(){
871     log test_ldflags "$@"
872     check_ld "cc" "$@" <<EOF
873 int main(void){ return 0; }
874 EOF
875 }
876
877 check_ldflags(){
878     log check_ldflags "$@"
879     test_ldflags "$@" && add_ldflags "$@"
880 }
881
882 check_header(){
883     log check_header "$@"
884     header=$1
885     shift
886     disable_safe $header
887     check_cpp "$@" <<EOF && enable_safe $header
888 #include <$header>
889 int x;
890 EOF
891 }
892
893 check_func(){
894     log check_func "$@"
895     func=$1
896     shift
897     disable $func
898     check_ld "cc" "$@" <<EOF && enable $func
899 extern int $func();
900 int main(void){ $func(); }
901 EOF
902 }
903
904 check_mathfunc(){
905     log check_mathfunc "$@"
906     func=$1
907     narg=$2
908     shift 2
909     test $narg = 2 && args="f, g" || args="f"
910     disable $func
911     check_ld "cc" "$@" <<EOF && enable $func
912 #include <math.h>
913 float foo(float f, float g) { return $func($args); }
914 int main(void){ return (int) foo; }
915 EOF
916 }
917
918 check_func_headers(){
919     log check_func_headers "$@"
920     headers=$1
921     funcs=$2
922     shift 2
923     {
924         for hdr in $headers; do
925             echo "#include <$hdr>"
926         done
927         for func in $funcs; do
928             echo "long check_$func(void) { return (long) $func; }"
929         done
930         echo "int main(void) { return 0; }"
931     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
932 }
933
934 check_class_headers_cpp(){
935     log check_class_headers_cpp "$@"
936     headers=$1
937     classes=$2
938     shift 2
939     {
940         for hdr in $headers; do
941             echo "#include <$hdr>"
942         done
943         echo "int main(void) { "
944         i=1
945         for class in $classes; do
946             echo "$class obj$i;"
947             i=$(expr $i + 1)
948         done
949         echo "return 0; }"
950     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
951 }
952
953 check_cpp_condition(){
954     log check_cpp_condition "$@"
955     header=$1
956     condition=$2
957     shift 2
958     check_cpp "$@" <<EOF
959 #include <$header>
960 #if !($condition)
961 #error "unsatisfied condition: $condition"
962 #endif
963 EOF
964 }
965
966 check_lib(){
967     log check_lib "$@"
968     header="$1"
969     func="$2"
970     shift 2
971     check_header $header && check_func $func "$@" && add_extralibs "$@"
972 }
973
974 check_lib2(){
975     log check_lib2 "$@"
976     headers="$1"
977     funcs="$2"
978     shift 2
979     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
980 }
981
982 check_lib_cpp(){
983     log check_lib_cpp "$@"
984     headers="$1"
985     classes="$2"
986     shift 2
987     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
988 }
989
990 check_pkg_config(){
991     log check_pkg_config "$@"
992     pkg="$1"
993     headers="$2"
994     funcs="$3"
995     shift 3
996     $pkg_config --exists $pkg 2>/dev/null || return
997     pkg_cflags=$($pkg_config --cflags $pkg)
998     pkg_libs=$($pkg_config --libs $pkg)
999     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1000         set_safe ${pkg}_cflags $pkg_cflags   &&
1001         set_safe ${pkg}_libs   $pkg_libs
1002 }
1003
1004 check_exec(){
1005     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1006 }
1007
1008 check_exec_crash(){
1009     code=$(cat)
1010
1011     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1012     # are safe but may not be available everywhere.  Thus we use
1013     # raise(SIGTERM) instead.  The check is run in a subshell so we
1014     # can redirect the "Terminated" message from the shell.  SIGBUS
1015     # is not defined by standard C so it is used conditionally.
1016
1017     (check_exec "$@") >> $logfile 2>&1 <<EOF
1018 #include <signal.h>
1019 static void sighandler(int sig){
1020     raise(SIGTERM);
1021 }
1022 int foo(void){
1023     $code
1024 }
1025 int (*func_ptr)(void) = foo;
1026 int main(void){
1027     signal(SIGILL, sighandler);
1028     signal(SIGFPE, sighandler);
1029     signal(SIGSEGV, sighandler);
1030 #ifdef SIGBUS
1031     signal(SIGBUS, sighandler);
1032 #endif
1033     return func_ptr();
1034 }
1035 EOF
1036 }
1037
1038 check_type(){
1039     log check_type "$@"
1040     headers=$1
1041     type=$2
1042     shift 2
1043     disable_safe "$type"
1044     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1045 }
1046
1047 check_struct(){
1048     log check_struct "$@"
1049     headers=$1
1050     struct=$2
1051     member=$3
1052     shift 3
1053     disable_safe "${struct}_${member}"
1054     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1055         enable_safe "${struct}_${member}"
1056 }
1057
1058 check_builtin(){
1059     log check_builtin "$@"
1060     name=$1
1061     headers=$2
1062     builtin=$3
1063     shift 3
1064     disable "$name"
1065     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1066 }
1067
1068 require(){
1069     name="$1"
1070     header="$2"
1071     func="$3"
1072     shift 3
1073     check_lib $header $func "$@" || die "ERROR: $name not found"
1074 }
1075
1076 require2(){
1077     name="$1"
1078     headers="$2"
1079     func="$3"
1080     shift 3
1081     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1082 }
1083
1084 require_cpp(){
1085     name="$1"
1086     headers="$2"
1087     classes="$3"
1088     shift 3
1089     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1090 }
1091
1092 require_pkg_config(){
1093     pkg="$1"
1094     check_pkg_config "$@" || die "ERROR: $pkg not found"
1095     add_cflags    $(get_safe ${pkg}_cflags)
1096     add_extralibs $(get_safe ${pkg}_libs)
1097 }
1098
1099 hostcc_o(){
1100     eval printf '%s\\n' $HOSTCC_O
1101 }
1102
1103 check_host_cc(){
1104     log check_host_cc "$@"
1105     cat > $TMPC
1106     log_file $TMPC
1107     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1108 }
1109
1110 check_host_cppflags(){
1111     log check_host_cppflags "$@"
1112     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1113 int x;
1114 EOF
1115 }
1116
1117 check_host_cflags(){
1118     log check_host_cflags "$@"
1119     set -- $($host_cflags_filter "$@")
1120     check_host_cc "$@" <<EOF && append host_cflags "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 apply(){
1126     file=$1
1127     shift
1128     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1129 }
1130
1131 cp_if_changed(){
1132     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1133     mkdir -p "$(dirname $2)"
1134     $cp_f "$1" "$2"
1135 }
1136
1137 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1138 # system-dependent things.
1139
1140 COMPONENT_LIST="
1141     bsfs
1142     decoders
1143     demuxers
1144     encoders
1145     filters
1146     hwaccels
1147     indevs
1148     muxers
1149     outdevs
1150     parsers
1151     protocols
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     crystalhd
1158     fontconfig
1159     frei0r
1160     gnutls
1161     iconv
1162     libaacplus
1163     libass
1164     libbluray
1165     libcaca
1166     libcdio
1167     libcelt
1168     libdc1394
1169     libfaac
1170     libfdk_aac
1171     libflite
1172     libfreetype
1173     libgme
1174     libgsm
1175     libiec61883
1176     libilbc
1177     libmodplug
1178     libmp3lame
1179     libnut
1180     libopencore_amrnb
1181     libopencore_amrwb
1182     libopencv
1183     libopenjpeg
1184     libopus
1185     libpulse
1186     libquvi
1187     librtmp
1188     libschroedinger
1189     libshine
1190     libsoxr
1191     libspeex
1192     libstagefright_h264
1193     libtheora
1194     libtwolame
1195     libutvideo
1196     libv4l2
1197     libvidstab
1198     libvo_aacenc
1199     libvo_amrwbenc
1200     libvorbis
1201     libvpx
1202     libwavpack
1203     libx264
1204     libxavs
1205     libxvid
1206     libzmq
1207     openal
1208     opencl
1209     openssl
1210     x11grab
1211     zlib
1212 "
1213
1214 DOCUMENT_LIST="
1215     doc
1216     htmlpages
1217     manpages
1218     podpages
1219     txtpages
1220 "
1221
1222 HWACCEL_LIST="
1223     dxva2
1224     vaapi
1225     vda
1226     vdpau
1227 "
1228
1229 LIBRARY_LIST="
1230     avcodec
1231     avdevice
1232     avfilter
1233     avformat
1234     avresample
1235     avutil
1236     postproc
1237     swresample
1238     swscale
1239 "
1240
1241 PROGRAM_LIST="
1242     ffplay
1243     ffprobe
1244     ffserver
1245     ffmpeg
1246 "
1247
1248 CONFIG_LIST="
1249     $COMPONENT_LIST
1250     $DOCUMENT_LIST
1251     $EXTERNAL_LIBRARY_LIST
1252     $HWACCEL_LIST
1253     $LIBRARY_LIST
1254     $PROGRAM_LIST
1255     dct
1256     dwt
1257     error_resilience
1258     fast_unaligned
1259     fft
1260     ftrapv
1261     gpl
1262     gray
1263     hardcoded_tables
1264     incompatible_libav_abi
1265     incompatible_fork_abi
1266     lsp
1267     lzo
1268     mdct
1269     memalign_hack
1270     memory_poisoning
1271     network
1272     nonfree
1273     pic
1274     rdft
1275     runtime_cpudetect
1276     safe_bitstream_reader
1277     shared
1278     small
1279     sram
1280     static
1281     swscale_alpha
1282     thumb
1283     version3
1284     xmm_clobber_test
1285 "
1286
1287 THREADS_LIST='
1288     pthreads
1289     w32threads
1290     os2threads
1291 '
1292
1293 ATOMICS_LIST='
1294     atomics_gcc
1295     atomics_suncc
1296     atomics_win32
1297 '
1298
1299 ARCH_LIST='
1300     aarch64
1301     alpha
1302     arm
1303     avr32
1304     avr32_ap
1305     avr32_uc
1306     bfin
1307     ia64
1308     m68k
1309     mips
1310     mips64
1311     parisc
1312     ppc
1313     ppc64
1314     s390
1315     sh4
1316     sparc
1317     sparc64
1318     tilegx
1319     tilepro
1320     tomi
1321     x86
1322     x86_32
1323     x86_64
1324 '
1325
1326 ARCH_EXT_LIST_ARM='
1327     armv5te
1328     armv6
1329     armv6t2
1330     neon
1331     vfp
1332     vfpv3
1333 '
1334
1335 ARCH_EXT_LIST_X86='
1336     amd3dnow
1337     amd3dnowext
1338     avx
1339     fma4
1340     mmx
1341     mmxext
1342     sse
1343     sse2
1344     sse3
1345     sse4
1346     sse42
1347     ssse3
1348 '
1349
1350 ARCH_EXT_LIST="
1351     $ARCH_EXT_LIST_ARM
1352     $ARCH_EXT_LIST_X86
1353     altivec
1354     ppc4xx
1355     vis
1356     mipsfpu
1357     mips32r2
1358     mipsdspr1
1359     mipsdspr2
1360 "
1361
1362 HAVE_LIST_CMDLINE='
1363     inline_asm
1364     symver
1365     yasm
1366 '
1367
1368 HAVE_LIST_PUB='
1369     bigendian
1370     fast_unaligned
1371     incompatible_libav_abi
1372     incompatible_fork_abi
1373 '
1374
1375 MATH_FUNCS="
1376     atanf
1377     atan2f
1378     cbrt
1379     cbrtf
1380     cosf
1381     exp2
1382     exp2f
1383     expf
1384     isinf
1385     isnan
1386     ldexpf
1387     llrint
1388     llrintf
1389     log2
1390     log2f
1391     log10f
1392     lrint
1393     lrintf
1394     powf
1395     rint
1396     round
1397     roundf
1398     sinf
1399     trunc
1400     truncf
1401 "
1402
1403 HAVE_LIST="
1404     $ARCH_EXT_LIST
1405     $(add_suffix _external $ARCH_EXT_LIST)
1406     $(add_suffix _inline   $ARCH_EXT_LIST)
1407     $HAVE_LIST_CMDLINE
1408     $HAVE_LIST_PUB
1409     $THREADS_LIST
1410     $ATOMICS_LIST
1411     $MATH_FUNCS
1412     access
1413     aligned_malloc
1414     aligned_stack
1415     alsa_asoundlib_h
1416     altivec_h
1417     arpa_inet_h
1418     asm_mod_q
1419     asm_mod_y
1420     asm_types_h
1421     atomic_cas_ptr
1422     atomics_native
1423     attribute_may_alias
1424     attribute_packed
1425     cdio_paranoia_h
1426     cdio_paranoia_paranoia_h
1427     CL_cl_h
1428     clock_gettime
1429     closesocket
1430     CommandLineToArgvW
1431     cpunop
1432     CryptGenRandom
1433     dcbzl
1434     dev_bktr_ioctl_bt848_h
1435     dev_bktr_ioctl_meteor_h
1436     dev_ic_bt8xx_h
1437     dev_video_bktr_ioctl_bt848_h
1438     dev_video_meteor_ioctl_meteor_h
1439     direct_h
1440     dlfcn_h
1441     dlopen
1442     dos_paths
1443     dxva_h
1444     ebp_available
1445     ebx_available
1446     fast_64bit
1447     fast_clz
1448     fast_cmov
1449     fcntl
1450     fork
1451     getaddrinfo
1452     gethrtime
1453     getopt
1454     GetProcessAffinityMask
1455     GetProcessMemoryInfo
1456     GetProcessTimes
1457     GetSystemTimeAsFileTime
1458     getrusage
1459     getservbyport
1460     gettimeofday
1461     glob
1462     gnu_as
1463     gsm_h
1464     i686
1465     ibm_asm
1466     inet_aton
1467     io_h
1468     inline_asm_labels
1469     isatty
1470     jack_port_get_latency_range
1471     kbhit
1472     ldbrx
1473     libdc1394_1
1474     libdc1394_2
1475     local_aligned_16
1476     local_aligned_8
1477     localtime_r
1478     loongson
1479     lzo1x_999_compress
1480     machine_ioctl_bt848_h
1481     machine_ioctl_meteor_h
1482     machine_rw_barrier
1483     makeinfo
1484     malloc_h
1485     MapViewOfFile
1486     memalign
1487     MemoryBarrier
1488     mkstemp
1489     mm_empty
1490     mmap
1491     mprotect
1492     msvcrt
1493     nanosleep
1494     openjpeg_1_5_openjpeg_h
1495     PeekNamedPipe
1496     perl
1497     pod2man
1498     poll_h
1499     posix_memalign
1500     pragma_deprecated
1501     pthread_cancel
1502     rdtsc
1503     rsync_contimeout
1504     sarestart
1505     sched_getaffinity
1506     sdl
1507     SetConsoleTextAttribute
1508     setmode
1509     setrlimit
1510     Sleep
1511     sndio_h
1512     socklen_t
1513     soundcard_h
1514     strerror_r
1515     struct_addrinfo
1516     struct_group_source_req
1517     struct_ip_mreq_source
1518     struct_ipv6_mreq
1519     struct_pollfd
1520     struct_rusage_ru_maxrss
1521     struct_sctp_event_subscribe
1522     struct_sockaddr_in6
1523     struct_sockaddr_sa_len
1524     struct_sockaddr_storage
1525     struct_stat_st_mtim_tv_nsec
1526     struct_v4l2_frmivalenum_discrete
1527     symver_asm_label
1528     symver_gnu_asm
1529     sync_val_compare_and_swap
1530     sysconf
1531     sysctl
1532     sys_mman_h
1533     sys_param_h
1534     sys_resource_h
1535     sys_select_h
1536     sys_soundcard_h
1537     sys_time_h
1538     sys_un_h
1539     sys_videoio_h
1540     termios_h
1541     texi2html
1542     threads
1543     unistd_h
1544     usleep
1545     vfp_args
1546     VirtualAlloc
1547     windows_h
1548     winsock2_h
1549     xform_asm
1550     xmm_clobbers
1551 "
1552
1553 # options emitted with CONFIG_ prefix but not available on the command line
1554 CONFIG_EXTRA="
1555     aandcttables
1556     ac3dsp
1557     audio_frame_queue
1558     dsputil
1559     exif
1560     frame_thread_encoder
1561     gcrypt
1562     golomb
1563     gplv3
1564     h264chroma
1565     h264dsp
1566     h264pred
1567     h264qpel
1568     hpeldsp
1569     huffman
1570     lgplv3
1571     lpc
1572     mpegaudio
1573     mpegaudiodsp
1574     mpegvideo
1575     mpegvideoenc
1576     nettle
1577     rangecoder
1578     riffdec
1579     riffenc
1580     rtpdec
1581     rtpenc_chain
1582     sinewin
1583     videodsp
1584     vp3dsp
1585 "
1586
1587 CMDLINE_SELECT="
1588     $ARCH_EXT_LIST
1589     $CONFIG_LIST
1590     $HAVE_LIST_CMDLINE
1591     $THREADS_LIST
1592     asm
1593     cross_compile
1594     debug
1595     extra_warnings
1596     logging
1597     lto
1598     optimizations
1599     stripping
1600 "
1601
1602 PATHS_LIST='
1603     bindir
1604     datadir
1605     incdir
1606     libdir
1607     mandir
1608     prefix
1609     shlibdir
1610 '
1611
1612 CMDLINE_SET="
1613     $PATHS_LIST
1614     ar
1615     arch
1616     as
1617     assert_level
1618     build_suffix
1619     cc
1620     cpu
1621     cross_prefix
1622     cxx
1623     dep_cc
1624     extra_version
1625     host_cc
1626     host_cflags
1627     host_ld
1628     host_ldflags
1629     host_libs
1630     host_os
1631     install
1632     ld
1633     logfile
1634     malloc_prefix
1635     nm
1636     optflags
1637     pkg_config
1638     progs_suffix
1639     random_seed
1640     samples
1641     strip
1642     sysinclude
1643     sysroot
1644     target_exec
1645     target_os
1646     target_path
1647     target_samples
1648     toolchain
1649     valgrind
1650     yasmexe
1651 "
1652
1653 CMDLINE_APPEND="
1654     extra_cflags
1655     extra_cxxflags
1656     host_cppflags
1657 "
1658
1659 # code dependency declarations
1660
1661 # architecture extensions
1662
1663 armv5te_deps="arm"
1664 armv6_deps="arm"
1665 armv6t2_deps="arm"
1666 neon_deps="arm"
1667 vfp_deps="arm"
1668 vfpv3_deps="vfp"
1669
1670 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1671
1672 mipsfpu_deps="mips"
1673 mips32r2_deps="mips"
1674 mipsdspr1_deps="mips"
1675 mipsdspr2_deps="mips"
1676
1677 altivec_deps="ppc"
1678 ppc4xx_deps="ppc"
1679
1680 vis_deps="sparc"
1681
1682 x86_64_suggest="fast_cmov i686"
1683
1684 amd3dnow_deps="mmx"
1685 amd3dnowext_deps="amd3dnow"
1686 mmx_deps="x86"
1687 mmxext_deps="mmx"
1688 sse_deps="mmxext"
1689 sse2_deps="sse"
1690 sse3_deps="sse2"
1691 ssse3_deps="sse3"
1692 sse4_deps="ssse3"
1693 sse42_deps="sse4"
1694 avx_deps="sse42"
1695 fma4_deps="avx"
1696
1697 mmx_external_deps="yasm"
1698 mmx_inline_deps="inline_asm"
1699 mmx_suggest="mmx_external mmx_inline"
1700
1701 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1702     eval dep=\$${ext}_deps
1703     eval ${ext}_external_deps='"${dep}_external"'
1704     eval ${ext}_inline_deps='"${dep}_inline"'
1705     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1706 done
1707
1708 aligned_stack_if_any="ppc x86"
1709 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1710 fast_clz_if_any="alpha avr32 mips ppc x86"
1711 fast_unaligned_if_any="ppc x86"
1712
1713 inline_asm_deps="!tms470"
1714 need_memalign="altivec neon sse"
1715
1716 symver_if_any="symver_asm_label symver_gnu_asm"
1717
1718 log2_deps="!msvcrt"
1719
1720 # subsystems
1721 dct_select="rdft"
1722 error_resilience_select="dsputil"
1723 frame_thread_encoder_deps="encoders threads"
1724 lpc_select="dsputil"
1725 mdct_select="fft"
1726 rdft_select="fft"
1727 mpegaudio_select="mpegaudiodsp"
1728 mpegaudiodsp_select="dct"
1729 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1730 mpegvideoenc_select="mpegvideo"
1731
1732 # decoders / encoders
1733 aac_decoder_select="mdct sinewin"
1734 aac_encoder_select="audio_frame_queue mdct sinewin"
1735 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1736 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1737 ac3_encoder_select="mdct ac3dsp dsputil"
1738 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1739 aic_decoder_select="dsputil golomb"
1740 alac_encoder_select="lpc"
1741 als_decoder_select="dsputil"
1742 amrnb_decoder_select="lsp"
1743 amrwb_decoder_select="lsp"
1744 amv_decoder_select="dsputil hpeldsp exif"
1745 amv_encoder_select="aandcttables"
1746 ape_decoder_select="dsputil"
1747 asv1_decoder_select="dsputil"
1748 asv1_encoder_select="dsputil"
1749 asv2_decoder_select="dsputil"
1750 asv2_encoder_select="dsputil"
1751 atrac1_decoder_select="mdct sinewin"
1752 atrac3_decoder_select="mdct"
1753 avrn_decoder_select="exif"
1754 bink_decoder_select="dsputil hpeldsp"
1755 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1756 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1757 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1758 cllc_decoder_select="dsputil"
1759 comfortnoise_encoder_select="lpc"
1760 cook_decoder_select="dsputil mdct sinewin"
1761 cscd_decoder_select="lzo"
1762 cscd_decoder_suggest="zlib"
1763 dca_decoder_select="mdct"
1764 dirac_decoder_select="dsputil dwt golomb videodsp"
1765 dnxhd_decoder_select="dsputil"
1766 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1767 dvvideo_decoder_select="dsputil"
1768 dvvideo_encoder_select="dsputil"
1769 dxa_decoder_deps="zlib"
1770 eac3_decoder_select="ac3_decoder"
1771 eac3_encoder_select="ac3_encoder"
1772 eamad_decoder_select="aandcttables dsputil mpegvideo"
1773 eatgq_decoder_select="aandcttables"
1774 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1775 exr_decoder_deps="zlib"
1776 ffv1_decoder_select="dsputil golomb rangecoder"
1777 ffv1_encoder_select="dsputil rangecoder"
1778 ffvhuff_decoder_select="dsputil"
1779 ffvhuff_encoder_select="dsputil huffman"
1780 flac_decoder_select="golomb"
1781 flac_encoder_select="dsputil golomb lpc"
1782 flashsv_decoder_deps="zlib"
1783 flashsv_encoder_deps="zlib"
1784 flashsv2_encoder_deps="zlib"
1785 flashsv2_decoder_deps="zlib"
1786 flv_decoder_select="h263_decoder"
1787 flv_encoder_select="h263_encoder"
1788 fourxm_decoder_select="dsputil"
1789 fraps_decoder_select="dsputil huffman"
1790 g2m_decoder_deps="zlib"
1791 g2m_decoder_select="dsputil"
1792 g729_decoder_select="dsputil"
1793 h261_decoder_select="error_resilience mpegvideo"
1794 h261_encoder_select="aandcttables mpegvideoenc"
1795 h263_decoder_select="error_resilience h263_parser mpegvideo"
1796 h263_encoder_select="aandcttables mpegvideoenc"
1797 h263i_decoder_select="h263_decoder"
1798 h263p_encoder_select="h263_encoder"
1799 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1800 h264_decoder_suggest="error_resilience"
1801 huffyuv_decoder_select="dsputil"
1802 huffyuv_encoder_select="dsputil huffman"
1803 iac_decoder_select="dsputil fft mdct sinewin"
1804 imc_decoder_select="dsputil fft mdct sinewin"
1805 indeo3_decoder_select="hpeldsp"
1806 interplay_video_decoder_select="hpeldsp"
1807 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1808 jpegls_encoder_select="golomb"
1809 jv_decoder_select="dsputil"
1810 lagarith_decoder_select="dsputil"
1811 ljpeg_encoder_select="aandcttables mpegvideoenc"
1812 loco_decoder_select="golomb"
1813 mdec_decoder_select="dsputil error_resilience mpegvideo"
1814 metasound_decoder_select="lsp mdct sinewin"
1815 mimic_decoder_select="dsputil hpeldsp"
1816 mjpeg_decoder_select="dsputil hpeldsp exif"
1817 mjpegb_decoder_select="dsputil hpeldsp exif"
1818 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1819 mlp_decoder_select="dsputil mlp_parser"
1820 motionpixels_decoder_select="dsputil"
1821 mp1_decoder_select="mpegaudio"
1822 mp1float_decoder_select="mpegaudio"
1823 mp2_decoder_select="mpegaudio"
1824 mp2float_decoder_select="mpegaudio"
1825 mp3_decoder_select="mpegaudio"
1826 mp3adu_decoder_select="mpegaudio"
1827 mp3adufloat_decoder_select="mpegaudio"
1828 mp3float_decoder_select="mpegaudio"
1829 mp3on4_decoder_select="mpegaudio"
1830 mp3on4float_decoder_select="mpegaudio"
1831 mpc7_decoder_select="dsputil mpegaudiodsp"
1832 mpc8_decoder_select="dsputil mpegaudiodsp"
1833 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1834 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1835 mpeg1video_decoder_select="error_resilience mpegvideo"
1836 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1837 mpeg2video_decoder_select="error_resilience mpegvideo"
1838 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1839 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1840 mpeg4_encoder_select="h263_encoder"
1841 msmpeg4v1_decoder_select="h263_decoder"
1842 msmpeg4v2_decoder_select="h263_decoder"
1843 msmpeg4v2_encoder_select="h263_encoder"
1844 msmpeg4v3_decoder_select="h263_decoder"
1845 msmpeg4v3_encoder_select="h263_encoder"
1846 mss2_decoder_select="error_resilience vc1_decoder"
1847 mxpeg_decoder_select="dsputil hpeldsp exif"
1848 nellymoser_decoder_select="mdct sinewin"
1849 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1850 nuv_decoder_select="dsputil lzo"
1851 png_decoder_deps="zlib"
1852 png_encoder_deps="zlib"
1853 png_encoder_select="dsputil"
1854 prores_decoder_select="dsputil"
1855 prores_encoder_select="dsputil"
1856 qcelp_decoder_select="lsp"
1857 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1858 ra_144_encoder_select="audio_frame_queue lpc"
1859 ralf_decoder_select="golomb"
1860 rtjpeg_decoder_select="dsputil"
1861 rv10_decoder_select="error_resilience h263_decoder"
1862 rv10_encoder_select="h263_encoder"
1863 rv20_decoder_select="error_resilience h263_decoder"
1864 rv20_encoder_select="h263_encoder"
1865 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1866 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1867 shorten_decoder_select="golomb"
1868 sipr_decoder_select="lsp"
1869 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1870 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1871 sonic_decoder_select="golomb"
1872 sonic_encoder_select="golomb"
1873 sonic_ls_encoder_select="golomb"
1874 sp5x_decoder_select="dsputil hpeldsp exif"
1875 svq1_decoder_select="hpeldsp"
1876 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1877 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1878 svq3_decoder_suggest="error_resilience zlib"
1879 tak_decoder_select="dsputil"
1880 theora_decoder_select="vp3_decoder"
1881 tiff_decoder_suggest="zlib"
1882 tiff_encoder_suggest="zlib"
1883 thp_decoder_select="dsputil hpeldsp exif"
1884 truehd_decoder_select="mlp_parser"
1885 truemotion2_decoder_select="dsputil"
1886 truespeech_decoder_select="dsputil"
1887 tscc_decoder_deps="zlib"
1888 twinvq_decoder_select="mdct lsp sinewin"
1889 utvideo_decoder_select="dsputil"
1890 utvideo_encoder_select="dsputil huffman"
1891 vble_decoder_select="dsputil"
1892 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1893 vc1image_decoder_select="vc1_decoder"
1894 vorbis_decoder_select="mdct"
1895 vorbis_encoder_select="mdct"
1896 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1897 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1898 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1899 vp6a_decoder_select="vp6_decoder"
1900 vp6f_decoder_select="vp6_decoder"
1901 vp8_decoder_select="h264pred videodsp"
1902 webp_decoder_select="vp8_decoder"
1903 wmapro_decoder_select="mdct sinewin"
1904 wmav1_decoder_select="mdct sinewin"
1905 wmav1_encoder_select="mdct sinewin"
1906 wmav2_decoder_select="mdct sinewin"
1907 wmav2_encoder_select="mdct sinewin"
1908 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1909 wmv1_decoder_select="h263_decoder"
1910 wmv1_encoder_select="h263_encoder"
1911 wmv2_decoder_select="h263_decoder videodsp"
1912 wmv2_encoder_select="h263_encoder"
1913 wmv3_decoder_select="vc1_decoder"
1914 wmv3image_decoder_select="wmv3_decoder"
1915 zerocodec_decoder_deps="zlib"
1916 zlib_decoder_deps="zlib"
1917 zlib_encoder_deps="zlib"
1918 zmbv_decoder_deps="zlib"
1919 zmbv_encoder_deps="zlib"
1920
1921 # hardware accelerators
1922 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1923 dxva2_deps="dxva2api_h"
1924 vaapi_deps="va_va_h"
1925 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1926 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1927 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1928
1929 h263_vaapi_hwaccel_deps="vaapi"
1930 h263_vaapi_hwaccel_select="h263_decoder"
1931 h263_vdpau_hwaccel_deps="vdpau"
1932 h263_vdpau_hwaccel_select="h263_decoder"
1933 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1934 h264_dxva2_hwaccel_deps="dxva2"
1935 h264_dxva2_hwaccel_select="h264_decoder"
1936 h264_vaapi_hwaccel_deps="vaapi"
1937 h264_vaapi_hwaccel_select="h264_decoder"
1938 h264_vda_decoder_deps="vda"
1939 h264_vda_decoder_select="h264_decoder"
1940 h264_vda_hwaccel_deps="vda"
1941 h264_vda_hwaccel_select="h264_decoder"
1942 h264_vdpau_decoder_deps="vdpau"
1943 h264_vdpau_decoder_select="h264_decoder"
1944 h264_vdpau_hwaccel_deps="vdpau"
1945 h264_vdpau_hwaccel_select="h264_decoder"
1946 mpeg_vdpau_decoder_deps="vdpau"
1947 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1948 mpeg1_vdpau_decoder_deps="vdpau"
1949 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1950 mpeg1_vdpau_hwaccel_deps="vdpau"
1951 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1952 mpeg2_crystalhd_decoder_select="crystalhd"
1953 mpeg2_dxva2_hwaccel_deps="dxva2"
1954 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1955 mpeg2_vaapi_hwaccel_deps="vaapi"
1956 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1957 mpeg2_vdpau_hwaccel_deps="vdpau"
1958 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1959 mpeg4_crystalhd_decoder_select="crystalhd"
1960 mpeg4_vaapi_hwaccel_deps="vaapi"
1961 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1962 mpeg4_vdpau_decoder_deps="vdpau"
1963 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1964 mpeg4_vdpau_hwaccel_deps="vdpau"
1965 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1966 msmpeg4_crystalhd_decoder_select="crystalhd"
1967 vc1_crystalhd_decoder_select="crystalhd"
1968 vc1_dxva2_hwaccel_deps="dxva2"
1969 vc1_dxva2_hwaccel_select="vc1_decoder"
1970 vc1_vaapi_hwaccel_deps="vaapi"
1971 vc1_vaapi_hwaccel_select="vc1_decoder"
1972 vc1_vdpau_decoder_deps="vdpau"
1973 vc1_vdpau_decoder_select="vc1_decoder"
1974 vc1_vdpau_hwaccel_deps="vdpau"
1975 vc1_vdpau_hwaccel_select="vc1_decoder"
1976 wmv3_crystalhd_decoder_select="crystalhd"
1977 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1978 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1979 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1980 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1981
1982 # parsers
1983 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1984 mpeg4video_parser_select="error_resilience mpegvideo"
1985 mpegvideo_parser_select="error_resilience mpegvideo"
1986 vc1_parser_select="mpegvideo"
1987
1988 # external libraries
1989 libaacplus_encoder_deps="libaacplus"
1990 libcelt_decoder_deps="libcelt"
1991 libfaac_encoder_deps="libfaac"
1992 libfaac_encoder_select="audio_frame_queue"
1993 libfdk_aac_decoder_deps="libfdk_aac"
1994 libfdk_aac_encoder_deps="libfdk_aac"
1995 libfdk_aac_encoder_select="audio_frame_queue"
1996 libgme_demuxer_deps="libgme"
1997 libgsm_decoder_deps="libgsm"
1998 libgsm_encoder_deps="libgsm"
1999 libgsm_ms_decoder_deps="libgsm"
2000 libgsm_ms_encoder_deps="libgsm"
2001 libilbc_decoder_deps="libilbc"
2002 libilbc_encoder_deps="libilbc"
2003 libmodplug_demuxer_deps="libmodplug"
2004 libmp3lame_encoder_deps="libmp3lame"
2005 libmp3lame_encoder_select="audio_frame_queue"
2006 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2007 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2008 libopencore_amrnb_encoder_select="audio_frame_queue"
2009 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2010 libopenjpeg_decoder_deps="libopenjpeg"
2011 libopenjpeg_encoder_deps="libopenjpeg"
2012 libopus_decoder_deps="libopus"
2013 libopus_encoder_deps="libopus"
2014 libopus_encoder_select="audio_frame_queue"
2015 libquvi_demuxer_deps="libquvi"
2016 libschroedinger_decoder_deps="libschroedinger"
2017 libschroedinger_encoder_deps="libschroedinger"
2018 libshine_encoder_deps="libshine"
2019 libshine_encoder_select="audio_frame_queue"
2020 libspeex_decoder_deps="libspeex"
2021 libspeex_encoder_deps="libspeex"
2022 libspeex_encoder_select="audio_frame_queue"
2023 libstagefright_h264_decoder_deps="libstagefright_h264"
2024 libtheora_encoder_deps="libtheora"
2025 libtwolame_encoder_deps="libtwolame"
2026 libvo_aacenc_encoder_deps="libvo_aacenc"
2027 libvo_aacenc_encoder_select="audio_frame_queue"
2028 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2029 libvorbis_decoder_deps="libvorbis"
2030 libvorbis_encoder_deps="libvorbis"
2031 libvorbis_encoder_select="audio_frame_queue"
2032 libvpx_vp8_decoder_deps="libvpx"
2033 libvpx_vp8_encoder_deps="libvpx"
2034 libvpx_vp9_decoder_deps="libvpx"
2035 libvpx_vp9_encoder_deps="libvpx"
2036 libwavpack_encoder_deps="libwavpack"
2037 libx264_encoder_deps="libx264"
2038 libx264rgb_encoder_deps="libx264"
2039 libxavs_encoder_deps="libxavs"
2040 libxvid_encoder_deps="libxvid"
2041 libutvideo_decoder_deps="libutvideo"
2042 libutvideo_encoder_deps="libutvideo"
2043
2044 # demuxers / muxers
2045 ac3_demuxer_select="ac3_parser"
2046 asf_demuxer_select="riffdec"
2047 asf_muxer_select="riffenc"
2048 asf_stream_muxer_select="asf_muxer"
2049 avi_demuxer_select="riffdec"
2050 avi_muxer_select="riffenc"
2051 avisynth_demuxer_deps="avisynth"
2052 avisynth_demuxer_select="riffdec"
2053 caf_demuxer_select="riffdec"
2054 dirac_demuxer_select="dirac_parser"
2055 dts_demuxer_select="dca_parser"
2056 dtshd_demuxer_select="dca_parser"
2057 dxa_demuxer_select="riffdec"
2058 eac3_demuxer_select="ac3_parser"
2059 f4v_muxer_select="mov_muxer"
2060 flac_demuxer_select="flac_parser"
2061 hls_muxer_select="mpegts_muxer"
2062 ipod_muxer_select="mov_muxer"
2063 ismv_muxer_select="mov_muxer"
2064 libnut_demuxer_deps="libnut"
2065 libnut_muxer_deps="libnut"
2066 matroska_audio_muxer_select="matroska_muxer"
2067 matroska_demuxer_select="riffdec"
2068 matroska_demuxer_suggest="bzlib lzo zlib"
2069 matroska_muxer_select="riffenc"
2070 mmf_muxer_select="riffenc"
2071 mov_demuxer_select="riffdec"
2072 mov_demuxer_suggest="zlib"
2073 mov_muxer_select="riffenc rtpenc_chain"
2074 mp3_demuxer_select="mpegaudio_parser"
2075 mp4_muxer_select="mov_muxer"
2076 mpegts_muxer_select="adts_muxer latm_muxer"
2077 mpegtsraw_demuxer_select="mpegts_demuxer"
2078 mxf_d10_muxer_select="mxf_muxer"
2079 nut_muxer_select="riffenc"
2080 nuv_demuxer_select="riffdec"
2081 ogg_demuxer_select="golomb"
2082 psp_muxer_select="mov_muxer"
2083 rtp_demuxer_select="sdp_demuxer"
2084 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2085 rtsp_demuxer_select="http_protocol rtpdec"
2086 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2087 sap_demuxer_select="sdp_demuxer"
2088 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2089 sdp_demuxer_select="rtpdec"
2090 smoothstreaming_muxer_select="ismv_muxer"
2091 spdif_muxer_select="aac_parser"
2092 tak_demuxer_select="tak_parser"
2093 tg2_muxer_select="mov_muxer"
2094 tgp_muxer_select="mov_muxer"
2095 vobsub_demuxer_select="mpegps_demuxer"
2096 w64_demuxer_select="wav_demuxer"
2097 w64_muxer_select="wav_muxer"
2098 wav_demuxer_select="riffdec"
2099 wav_muxer_select="riffenc"
2100 webm_muxer_select="riffenc"
2101 wtv_demuxer_select="riffdec"
2102 xmv_demuxer_select="riffdec"
2103 xwma_demuxer_select="riffdec"
2104
2105 # indevs / outdevs
2106 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2107 alsa_outdev_deps="alsa_asoundlib_h"
2108 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2109 caca_outdev_deps="libcaca"
2110 dshow_indev_deps="IBaseFilter"
2111 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2112 dv1394_indev_deps="dv1394"
2113 dv1394_indev_select="dv_demuxer"
2114 fbdev_indev_deps="linux_fb_h"
2115 iec61883_indev_deps="libiec61883"
2116 jack_indev_deps="jack_jack_h sem_timedwait"
2117 lavfi_indev_deps="avfilter"
2118 libcdio_indev_deps="libcdio"
2119 libdc1394_indev_deps="libdc1394"
2120 libv4l2_indev_deps="libv4l2"
2121 openal_indev_deps="openal"
2122 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2123 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2124 pulse_indev_deps="libpulse"
2125 sdl_outdev_deps="sdl"
2126 sndio_indev_deps="sndio_h"
2127 sndio_outdev_deps="sndio_h"
2128 v4l_indev_deps="linux_videodev_h"
2129 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2130 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2131 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2132 vfwcap_indev_extralibs="-lavicap32"
2133 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2134 xv_outdev_extralibs="-lXv -lX11 -lXext"
2135 x11grab_indev_deps="x11grab"
2136
2137 # protocols
2138 bluray_protocol_deps="libbluray"
2139 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2140 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2141 ffrtmpcrypt_protocol_select="tcp_protocol"
2142 ffrtmphttp_protocol_deps="!librtmp_protocol"
2143 ffrtmphttp_protocol_select="http_protocol"
2144 ftp_protocol_select="tcp_protocol"
2145 gopher_protocol_select="network"
2146 httpproxy_protocol_select="tcp_protocol"
2147 http_protocol_select="tcp_protocol"
2148 https_protocol_select="tls_protocol"
2149 librtmp_protocol_deps="librtmp"
2150 librtmpe_protocol_deps="librtmp"
2151 librtmps_protocol_deps="librtmp"
2152 librtmpt_protocol_deps="librtmp"
2153 librtmpte_protocol_deps="librtmp"
2154 mmsh_protocol_select="http_protocol"
2155 mmst_protocol_select="network"
2156 rtmp_protocol_deps="!librtmp_protocol"
2157 rtmp_protocol_select="tcp_protocol"
2158 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2159 rtmps_protocol_deps="!librtmp_protocol"
2160 rtmps_protocol_select="tls_protocol"
2161 rtmpt_protocol_select="ffrtmphttp_protocol"
2162 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2163 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2164 rtp_protocol_select="udp_protocol"
2165 sctp_protocol_deps="struct_sctp_event_subscribe"
2166 sctp_protocol_select="network"
2167 srtp_protocol_select="rtp_protocol"
2168 tcp_protocol_select="network"
2169 tls_protocol_deps_any="openssl gnutls"
2170 tls_protocol_select="tcp_protocol"
2171 udp_protocol_select="network"
2172 unix_protocol_deps="sys_un_h"
2173 unix_protocol_select="network"
2174
2175 # filters
2176 aconvert_filter_deps="swresample"
2177 amovie_filter_deps="avcodec avformat"
2178 aresample_filter_deps="swresample"
2179 ass_filter_deps="libass"
2180 asyncts_filter_deps="avresample"
2181 atempo_filter_deps="avcodec rdft"
2182 azmq_filter_deps="libzmq"
2183 blackframe_filter_deps="gpl"
2184 boxblur_filter_deps="gpl"
2185 colormatrix_filter_deps="gpl"
2186 cropdetect_filter_deps="gpl"
2187 dctdnoiz_filter_deps="avcodec fft"
2188 delogo_filter_deps="gpl"
2189 deshake_filter_deps="avcodec"
2190 deshake_filter_select="dsputil"
2191 drawtext_filter_deps="libfreetype"
2192 ebur128_filter_deps="gpl"
2193 flite_filter_deps="libflite"
2194 frei0r_filter_deps="frei0r dlopen"
2195 frei0r_filter_extralibs='$ldl'
2196 frei0r_src_filter_deps="frei0r dlopen"
2197 frei0r_src_filter_extralibs='$ldl'
2198 geq_filter_deps="gpl"
2199 histeq_filter_deps="gpl"
2200 hqdn3d_filter_deps="gpl"
2201 hue_filter_deps="gpl"
2202 interlace_filter_deps="gpl"
2203 kerndeint_filter_deps="gpl"
2204 mcdeint_filter_deps="avcodec gpl"
2205 movie_filter_deps="avcodec avformat"
2206 mp_filter_deps="gpl avcodec swscale inline_asm"
2207 mpdecimate_filter_deps="gpl avcodec"
2208 mptestsrc_filter_deps="gpl"
2209 negate_filter_deps="lut_filter"
2210 noise_filter_deps="gpl"
2211 perspective_filter_deps="gpl"
2212 resample_filter_deps="avresample"
2213 ocv_filter_deps="libopencv"
2214 owdenoise_filter_deps="gpl"
2215 pan_filter_deps="swresample"
2216 pp_filter_deps="gpl postproc"
2217 removelogo_filter_deps="avcodec avformat swscale"
2218 sab_filter_deps="gpl swscale"
2219 scale_filter_deps="swscale"
2220 smartblur_filter_deps="gpl swscale"
2221 showspectrum_filter_deps="avcodec rdft"
2222 spp_filter_deps="gpl avcodec fft"
2223 stereo3d_filter_deps="gpl"
2224 subtitles_filter_deps="avformat avcodec libass"
2225 super2xsai_filter_deps="gpl"
2226 tinterlace_filter_deps="gpl"
2227 vidstabdetect_filter_deps="libvidstab"
2228 vidstabtransform_filter_deps="libvidstab"
2229 yadif_filter_deps="gpl"
2230 pixfmts_super2xsai_test_deps="super2xsai_filter"
2231 tinterlace_merge_test_deps="tinterlace_filter"
2232 tinterlace_pad_test_deps="tinterlace_filter"
2233 zmq_filter_deps="libzmq"
2234
2235 # libraries
2236 avcodec_deps="avutil"
2237 avdevice_deps="avutil avcodec avformat"
2238 avfilter_deps="avutil"
2239 avformat_deps="avutil avcodec"
2240 avresample_deps="avutil"
2241 postproc_deps="avutil gpl"
2242 swscale_deps="avutil"
2243
2244 # programs
2245 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2246 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2247                null_filter
2248                setpts_filter trim_filter"
2249 ffplay_deps="avcodec avformat swscale swresample sdl"
2250 ffplay_select="rdft crop_filter"
2251 ffprobe_deps="avcodec avformat"
2252 ffserver_deps="avformat fork sarestart"
2253 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2254 ffserver_extralibs='$ldl'
2255
2256 # documentation
2257 podpages_deps="perl"
2258 manpages_deps="perl pod2man"
2259 htmlpages_deps="texi2html"
2260 txtpages_deps="makeinfo"
2261 doc_deps_any="manpages htmlpages podpages txtpages"
2262
2263 # default parameters
2264
2265 logfile="config.log"
2266
2267 # installation paths
2268 prefix_default="/usr/local"
2269 bindir_default='${prefix}/bin'
2270 datadir_default='${prefix}/share/ffmpeg'
2271 incdir_default='${prefix}/include'
2272 libdir_default='${prefix}/lib'
2273 mandir_default='${prefix}/share/man'
2274 shlibdir_default="$libdir_default"
2275
2276 # toolchain
2277 ar_default="ar"
2278 cc_default="gcc"
2279 cxx_default="g++"
2280 host_cc_default="gcc"
2281 cp_f="cp -f"
2282 install="install"
2283 ln_s="ln -s -f"
2284 nm_default="nm -g"
2285 objformat="elf"
2286 pkg_config_default=pkg-config
2287 ranlib="ranlib"
2288 strip_default="strip"
2289 yasmexe_default="yasm"
2290
2291 nogas=":"
2292
2293 # machine
2294 arch_default=$(uname -m)
2295 cpu="generic"
2296
2297 # OS
2298 target_os_default=$(tolower $(uname -s))
2299 host_os=$target_os_default
2300
2301 # configurable options
2302 enable $PROGRAM_LIST
2303 enable $DOCUMENT_LIST
2304 enable $(filter_out avresample $LIBRARY_LIST)
2305 enable stripping
2306
2307 enable asm
2308 enable debug
2309 enable doc
2310 enable optimizations
2311 enable runtime_cpudetect
2312 enable safe_bitstream_reader
2313 enable static
2314 enable swscale_alpha
2315
2316 # Enable hwaccels by default.
2317 enable dxva2 vaapi vdpau
2318
2319 # build settings
2320 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2321 LIBPREF="lib"
2322 LIBSUF=".a"
2323 FULLNAME='$(NAME)$(BUILDSUF)'
2324 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2325 SLIBPREF="lib"
2326 SLIBSUF=".so"
2327 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2328 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2329 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2330 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2331 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2332 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2333
2334 asflags_filter=echo
2335 cflags_filter=echo
2336 ldflags_filter=echo
2337
2338 AS_C='-c'
2339 AS_O='-o $@'
2340 CC_C='-c'
2341 CC_E='-E -o $@'
2342 CC_O='-o $@'
2343 CXX_C='-c'
2344 CXX_O='-o $@'
2345 LD_O='-o $@'
2346 LD_LIB='-l%'
2347 LD_PATH='-L'
2348 HOSTCC_C='-c'
2349 HOSTCC_O='-o $@'
2350 HOSTLD_O='-o $@'
2351
2352 host_cflags='-O3 -g'
2353 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2354 host_libs='-lm'
2355 host_cflags_filter=echo
2356 host_ldflags_filter=echo
2357
2358 target_path='$(CURDIR)'
2359
2360 # since the object filename is not given with the -MM flag, the compiler
2361 # is only able to print the basename, and we must add the path ourselves
2362 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2363 DEPFLAGS='-MM'
2364
2365 # find source path
2366 if test -f configure; then
2367     source_path=.
2368 else
2369     source_path=$(cd $(dirname "$0"); pwd)
2370     echo "$source_path" | grep -q '[[:blank:]]' &&
2371         die "Out of tree builds are impossible with whitespace in source path."
2372     test -e "$source_path/config.h" &&
2373         die "Out of tree builds are impossible with config.h in source dir."
2374 fi
2375
2376 for v in "$@"; do
2377     r=${v#*=}
2378     l=${v%"$r"}
2379     r=$(sh_quote "$r")
2380     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2381 done
2382
2383 find_things(){
2384     thing=$1
2385     pattern=$2
2386     file=$source_path/$3
2387     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2388 }
2389
2390 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2391 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2392 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2393 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2394 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2395 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2396 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2397 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2398 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2399 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2400 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2401
2402 ALL_COMPONENTS="
2403     $BSF_LIST
2404     $DECODER_LIST
2405     $DEMUXER_LIST
2406     $ENCODER_LIST
2407     $FILTER_LIST
2408     $HWACCEL_LIST
2409     $INDEV_LIST
2410     $MUXER_LIST
2411     $OUTDEV_LIST
2412     $PARSER_LIST
2413     $PROTOCOL_LIST
2414 "
2415
2416 for n in $COMPONENT_LIST; do
2417     v=$(toupper ${n%s})_LIST
2418     eval enable \$$v
2419     eval ${n}_if_any="\$$v"
2420 done
2421
2422 enable $ARCH_EXT_LIST
2423
2424 die_unknown(){
2425     echo "Unknown option \"$1\"."
2426     echo "See $0 --help for available options."
2427     exit 1
2428 }
2429
2430 print_3_columns() {
2431     cat | tr ' ' '\n' | sort | pr -r -3 -t
2432 }
2433
2434 show_list() {
2435     suffix=_$1
2436     shift
2437     echo $* | sed s/$suffix//g | print_3_columns
2438     exit 0
2439 }
2440
2441 rand_list(){
2442     IFS=', '
2443     set -- $*
2444     unset IFS
2445     for thing; do
2446         comp=${thing%:*}
2447         prob=${thing#$comp}
2448         prob=${prob#:}
2449         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2450         echo "prob ${prob:-0.5}"
2451         printf '%s\n' $comp
2452     done
2453 }
2454
2455 do_random(){
2456     action=$1
2457     shift
2458     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2459     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2460 }
2461
2462 for opt do
2463     optval="${opt#*=}"
2464     case "$opt" in
2465         --extra-ldflags=*)
2466             add_ldflags $optval
2467         ;;
2468         --extra-libs=*)
2469             add_extralibs $optval
2470         ;;
2471         --disable-devices)
2472             disable $INDEV_LIST $OUTDEV_LIST
2473         ;;
2474         --enable-debug=*)
2475             debuglevel="$optval"
2476         ;;
2477         --disable-programs)
2478             disable $PROGRAM_LIST
2479         ;;
2480         --disable-everything)
2481             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2482         ;;
2483         --disable-all)
2484             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2485             disable $LIBRARY_LIST $PROGRAM_LIST doc
2486         ;;
2487         --enable-random|--disable-random)
2488             action=${opt%%-random}
2489             do_random ${action#--} $COMPONENT_LIST
2490         ;;
2491         --enable-random=*|--disable-random=*)
2492             action=${opt%%-random=*}
2493             do_random ${action#--} $optval
2494         ;;
2495         --enable-*=*|--disable-*=*)
2496             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2497             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2498             eval list=\$$(toupper $thing)_LIST
2499             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2500             list=$(filter "$name" $list)
2501             [ "$list" = "" ] && warn "Option $opt did not match anything"
2502             $action $list
2503         ;;
2504         --enable-?*|--disable-?*)
2505             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2506             if is_in $option $COMPONENT_LIST; then
2507                 test $action = disable && action=unset
2508                 eval $action \$$(toupper ${option%s})_LIST
2509             elif is_in $option $CMDLINE_SELECT; then
2510                 $action $option
2511             else
2512                 die_unknown $opt
2513             fi
2514         ;;
2515         --list-*)
2516             NAME="${opt#--list-}"
2517             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2518             NAME=${NAME%s}
2519             eval show_list $NAME \$$(toupper $NAME)_LIST
2520         ;;
2521         --help|-h) show_help
2522         ;;
2523         --fatal-warnings) enable fatal_warnings
2524         ;;
2525         *)
2526             optname="${opt%%=*}"
2527             optname="${optname#--}"
2528             optname=$(echo "$optname" | sed 's/-/_/g')
2529             if is_in $optname $CMDLINE_SET; then
2530                 eval $optname='$optval'
2531             elif is_in $optname $CMDLINE_APPEND; then
2532                 append $optname "$optval"
2533             else
2534                 die_unknown $opt
2535             fi
2536         ;;
2537     esac
2538 done
2539
2540 disabled logging && logfile=/dev/null
2541
2542 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2543 set >> $logfile
2544
2545 test -n "$cross_prefix" && enable cross_compile
2546
2547 if enabled cross_compile; then
2548     test -n "$arch" && test -n "$target_os" ||
2549         die "Must specify target arch and OS when cross-compiling"
2550 fi
2551
2552 ar_default="${cross_prefix}${ar_default}"
2553 cc_default="${cross_prefix}${cc_default}"
2554 cxx_default="${cross_prefix}${cxx_default}"
2555 nm_default="${cross_prefix}${nm_default}"
2556 pkg_config_default="${cross_prefix}${pkg_config_default}"
2557 ranlib="${cross_prefix}${ranlib}"
2558 strip_default="${cross_prefix}${strip_default}"
2559
2560 sysinclude_default="${sysroot}/usr/include"
2561
2562 test -n "$valgrind" && toolchain="valgrind-memcheck"
2563
2564 case "$toolchain" in
2565     clang-asan)
2566         cc_default="clang"
2567         add_cflags  -fsanitize=address
2568         add_ldflags -fsanitize=address
2569     ;;
2570     clang-tsan)
2571         cc_default="clang"
2572         add_cflags  -fsanitize=thread -pie
2573         add_ldflags -fsanitize=thread -pie
2574     ;;
2575     gcc-asan)
2576         cc_default="gcc"
2577         add_cflags  -fsanitize=address
2578         add_ldflags -fsanitize=address
2579     ;;
2580     gcc-tsan)
2581         cc_default="gcc"
2582         add_cflags  -fsanitize=thread -pie -fPIC
2583         add_ldflags -fsanitize=thread -pie -fPIC
2584     ;;
2585     valgrind-massif)
2586         target_exec_default=${valgrind:-"valgrind"}
2587         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"
2588     ;;
2589     valgrind-memcheck)
2590         target_exec_default=${valgrind:-"valgrind"}
2591         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2592     ;;
2593     msvc)
2594         cc_default="c99wrap cl"
2595         ld_default="c99wrap link"
2596         nm_default="dumpbin -symbols"
2597         ar_default="lib"
2598         target_os_default="win32"
2599     ;;
2600     icl)
2601         cc_default="c99wrap -noconv icl"
2602         ld_default="c99wrap xilink"
2603         nm_default="dumpbin -symbols"
2604         ar_default="xilib"
2605         target_os_default="win32"
2606     ;;
2607     gcov)
2608         add_cflags  -fprofile-arcs -ftest-coverage
2609         add_ldflags -fprofile-arcs -ftest-coverage
2610     ;;
2611     ?*)
2612         die "Unknown toolchain $toolchain"
2613     ;;
2614 esac
2615
2616 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2617 enabled cross_compile || host_cc_default=$cc
2618 set_default host_cc
2619
2620 if ! $pkg_config --version >/dev/null 2>&1; then
2621     warn "$pkg_config not found, library detection may fail."
2622     pkg_config=false
2623 fi
2624
2625 exesuf() {
2626     case $1 in
2627         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2628     esac
2629 }
2630
2631 EXESUF=$(exesuf $target_os)
2632 HOSTEXESUF=$(exesuf $host_os)
2633
2634 # set temporary file name
2635 : ${TMPDIR:=$TEMPDIR}
2636 : ${TMPDIR:=$TMP}
2637 : ${TMPDIR:=/tmp}
2638
2639 if ! check_cmd mktemp -u XXXXXX; then
2640     # simple replacement for missing mktemp
2641     # NOT SAFE FOR GENERAL USE
2642     mktemp(){
2643         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2644     }
2645 fi
2646
2647 tmpfile(){
2648     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2649         (set -C; exec > $tmp) 2>/dev/null ||
2650         die "Unable to create temporary file in $TMPDIR."
2651     append TMPFILES $tmp
2652     eval $1=$tmp
2653 }
2654
2655 trap 'rm -f -- $TMPFILES' EXIT
2656
2657 tmpfile TMPASM .asm
2658 tmpfile TMPC   .c
2659 tmpfile TMPCPP .cpp
2660 tmpfile TMPE   $EXESUF
2661 tmpfile TMPH   .h
2662 tmpfile TMPO   .o
2663 tmpfile TMPS   .S
2664 tmpfile TMPSH  .sh
2665 tmpfile TMPV   .ver
2666
2667 unset -f mktemp
2668
2669 chmod +x $TMPE
2670
2671 # make sure we can execute files in $TMPDIR
2672 cat > $TMPSH 2>> $logfile <<EOF
2673 #! /bin/sh
2674 EOF
2675 chmod +x $TMPSH >> $logfile 2>&1
2676 if ! $TMPSH >> $logfile 2>&1; then
2677     cat <<EOF
2678 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2679 variable to another directory and make sure that it is not mounted noexec.
2680 EOF
2681     die "Sanity test failed."
2682 fi
2683
2684 ccc_flags(){
2685     for flag; do
2686         case $flag in
2687             -std=c99)           echo -c99                       ;;
2688             -mcpu=*)            echo -arch ${flag#*=}           ;;
2689             -mieee)             echo -ieee                      ;;
2690             -O*|-fast)          echo $flag                      ;;
2691             -fno-math-errno)    echo -assume nomath_errno       ;;
2692             -g)                 echo -g3                        ;;
2693             -Wall)              echo -msg_enable level2         ;;
2694             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2695             -Wl,*)              echo $flag                      ;;
2696             -f*|-W*)                                            ;;
2697             *)                  echo $flag                      ;;
2698         esac
2699    done
2700 }
2701
2702 msvc_common_flags(){
2703     for flag; do
2704         case $flag in
2705             # In addition to specifying certain flags under the compiler
2706             # specific filters, they must be specified here as well or else the
2707             # generic catch all at the bottom will print the original flag.
2708             -Wall)                ;;
2709             -std=c99)             ;;
2710             # Common flags
2711             -fomit-frame-pointer) ;;
2712             -g)                   echo -Z7 ;;
2713             -fno-math-errno)      ;;
2714             -fno-common)          ;;
2715             -fno-signed-zeros)    ;;
2716             -fPIC)                ;;
2717             -mthumb)              ;;
2718             -march=*)             ;;
2719             -lz)                  echo zlib.lib ;;
2720             -lavifil32)           echo vfw32.lib ;;
2721             -lavicap32)           echo vfw32.lib user32.lib ;;
2722             -l*)                  echo ${flag#-l}.lib ;;
2723             *)                    echo $flag ;;
2724         esac
2725     done
2726 }
2727
2728 msvc_flags(){
2729     msvc_common_flags "$@"
2730     for flag; do
2731         case $flag in
2732             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2733                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2734                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2735                                        -wd4554 \
2736                                        -wd4996 -wd4273 ;;
2737         esac
2738     done
2739 }
2740
2741 icl_flags(){
2742     msvc_common_flags "$@"
2743     for flag; do
2744         case $flag in
2745             # Despite what Intel's documentation says -Wall, which is supported
2746             # on Windows, does enable remarks so disable them here.
2747             -Wall)                echo $flag -Qdiag-disable:remark ;;
2748             -std=c99)             echo -Qstd=c99 ;;
2749         esac
2750     done
2751 }
2752
2753 pgi_flags(){
2754     for flag; do
2755         case $flag in
2756             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2757             -fomit-frame-pointer) echo -Mnoframe ;;
2758             -g)                   echo -gopt ;;
2759             *)                    echo $flag ;;
2760         esac
2761     done
2762 }
2763
2764 suncc_flags(){
2765     for flag; do
2766         case $flag in
2767             -march=*|-mcpu=*)
2768                 case "${flag#*=}" in
2769                     native)                   echo -xtarget=native       ;;
2770                     v9|niagara)               echo -xarch=sparc          ;;
2771                     ultrasparc)               echo -xarch=sparcvis       ;;
2772                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2773                     i586|pentium)             echo -xchip=pentium        ;;
2774                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2775                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2776                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2777                     pentium4*)          echo -xtarget=pentium4           ;;
2778                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2779                     *-sse3)             echo -xarch=sse3                 ;;
2780                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2781                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2782                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2783                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2784                     bdver*)                    echo -xarch=avx           ;;
2785                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2786                     k8|opteron|athlon64|athlon-fx)
2787                                                echo -xarch=sse2a         ;;
2788                     athlon*)                   echo -xarch=pentium_proa  ;;
2789                 esac
2790                 ;;
2791             -std=c99)             echo -xc99              ;;
2792             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2793             -fPIC)                echo -KPIC -xcode=pic32 ;;
2794             -W*,*)                echo $flag              ;;
2795             -f*-*|-W*|-mimpure-text)                      ;;
2796             -shared)              echo -G                 ;;
2797             *)                    echo $flag              ;;
2798         esac
2799     done
2800 }
2801
2802 tms470_flags(){
2803     for flag; do
2804         case $flag in
2805             -march=*|-mcpu=*)
2806                 case "${flag#*=}" in
2807                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2808                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2809                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2810                     armv6*|arm11*)          echo -mv=6   ;;
2811                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2812                                             echo -mv=5e  ;;
2813                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2814                 esac
2815                 ;;
2816             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2817             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2818             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2819             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2820             -msoft-float)   echo --float_support=vfplib       ;;
2821             -O[0-3]|-mf=*)  echo $flag                        ;;
2822             -g)             echo -g -mn                       ;;
2823             -pds=*)         echo $flag                        ;;
2824             -D*|-I*)        echo $flag                        ;;
2825             --gcc|--abi=*)  echo $flag                        ;;
2826             -me)            echo $flag                        ;;
2827         esac
2828     done
2829 }
2830
2831 probe_cc(){
2832     pfx=$1
2833     _cc=$2
2834
2835     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2836     unset _ld_o _ldflags _ld_lib _ld_path
2837     unset _depflags _DEPCMD _DEPFLAGS
2838     _flags_filter=echo
2839
2840     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2841         _type=llvm_gcc
2842         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2843         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2844         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2845         _cflags_speed='-O3'
2846         _cflags_size='-Os'
2847     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2848         _type=gcc
2849         gcc_version=$($_cc --version | head -n1)
2850         gcc_basever=$($_cc -dumpversion)
2851         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2852         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2853         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2854         if ! $_cc -dumpversion | grep -q '^2\.'; then
2855             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2856         fi
2857         _cflags_speed='-O3'
2858         _cflags_size='-Os'
2859     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2860         _type=icc
2861         _ident=$($_cc --version | head -n1)
2862         _depflags='-MMD'
2863         _cflags_speed='-O3'
2864         _cflags_size='-Os'
2865         _cflags_noopt='-O1'
2866     elif $_cc -v 2>&1 | grep -q xlc; then
2867         _type=xlc
2868         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2869         _cflags_speed='-O5'
2870         _cflags_size='-O5 -qcompact'
2871     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2872         _type=ccc
2873         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2874         _DEPFLAGS='-M'
2875         _cflags_speed='-fast'
2876         _cflags_size='-O1'
2877         _flags_filter=ccc_flags
2878     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2879         test -d "$sysroot" || die "No valid sysroot specified."
2880         _type=armcc
2881         _ident=$($_cc --vsn | head -n1)
2882         armcc_conf="$PWD/armcc.conf"
2883         $_cc --arm_linux_configure                 \
2884              --arm_linux_config_file="$armcc_conf" \
2885              --configure_sysroot="$sysroot"        \
2886              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2887              die "Error creating armcc configuration file."
2888         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2889         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2890         as_default="${cross_prefix}gcc"
2891         _depflags='-MMD'
2892         _cflags_speed='-O3'
2893         _cflags_size='-Os'
2894     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2895         _type=tms470
2896         _ident=$($_cc -version | head -n1 | tr -s ' ')
2897         _flags='--gcc --abi=eabi -me'
2898         _cc_e='-ppl -fe=$@'
2899         _cc_o='-fe=$@'
2900         _depflags='-ppa -ppd=$(@:.o=.d)'
2901         _cflags_speed='-O3 -mf=5'
2902         _cflags_size='-O3 -mf=2'
2903         _flags_filter=tms470_flags
2904     elif $_cc -v 2>&1 | grep -q clang; then
2905         _type=clang
2906         _ident=$($_cc --version | head -n1)
2907         _depflags='-MMD'
2908         _cflags_speed='-O3'
2909         _cflags_size='-Os'
2910     elif $_cc -V 2>&1 | grep -q Sun; then
2911         _type=suncc
2912         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2913         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2914         _DEPFLAGS='-xM1 -xc99'
2915         _ldflags='-std=c99'
2916         _cflags_speed='-O5'
2917         _cflags_size='-O5 -xspace'
2918         _flags_filter=suncc_flags
2919     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2920         _type=pathscale
2921         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2922         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2923         _cflags_speed='-O2'
2924         _cflags_size='-Os'
2925         _flags_filter='filter_out -Wdisabled-optimization'
2926     elif $_cc -v 2>&1 | grep -q Open64; then
2927         _type=open64
2928         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2929         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2930         _cflags_speed='-O2'
2931         _cflags_size='-Os'
2932         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2933     elif $_cc -V 2>&1 | grep -q Portland; then
2934         _type=pgi
2935         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2936         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2937         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2938         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2939         _cflags_noopt="-O"
2940         _flags_filter=pgi_flags
2941     elif $_cc 2>&1 | grep -q Microsoft; then
2942         _type=msvc
2943         _ident=$($cc 2>&1 | head -n1)
2944         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2945         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2946         _cflags_speed="-O2"
2947         _cflags_size="-O1"
2948         # Nonstandard output options, to avoid msys path conversion issues.
2949         # Relies on wrapper to remap it.
2950         if $_cc 2>&1 | grep -q Linker; then
2951             _ld_o='-out $@'
2952         else
2953             _ld_o='-Fe$@'
2954         fi
2955         _cc_o='-Fo $@'
2956         _cc_e='-P -Fi $@'
2957         _flags_filter=msvc_flags
2958         _ld_lib='lib%.a'
2959         _ld_path='-libpath:'
2960         _flags='-nologo'
2961         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2962         if [ $pfx = hostcc ]; then
2963             append _cflags -Dsnprintf=_snprintf
2964         fi
2965         disable stripping
2966     elif $_cc 2>&1 | grep -q Intel; then
2967         _type=icl
2968         _ident=$($cc 2>&1 | head -n1)
2969         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2970         # Not only is O3 broken on 13.x+ but it is slower on all previous
2971         # versions (tested) as well.
2972         _cflags_speed="-O2"
2973         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2974         # Nonstandard output options, to avoid msys path conversion issues.
2975         # Relies on wrapper to remap it.
2976         if $_cc 2>&1 | grep -q Linker; then
2977             _ld_o='-out $@'
2978         else
2979             _ld_o='-Fe$@'
2980         fi
2981         _cc_o='-Fo $@'
2982         _cc_e='-P'
2983         _flags_filter=icl_flags
2984         _ld_lib='lib%.a'
2985         _ld_path='-libpath:'
2986         # -Qdiag-error to make icl error when seeing certain unknown arguments
2987         _flags='-nologo -Qdiag-error:4044,10157'
2988         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2989         # with MSVC which enables it by default.
2990         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2991         if [ $pfx = hostcc ]; then
2992             append _cflags -Dsnprintf=_snprintf
2993         fi
2994     fi
2995
2996     eval ${pfx}_type=\$_type
2997     eval ${pfx}_ident=\$_ident
2998 }
2999
3000 set_ccvars(){
3001     eval ${1}_C=\${_cc_c-\${${1}_C}}
3002     eval ${1}_E=\${_cc_e-\${${1}_E}}
3003     eval ${1}_O=\${_cc_o-\${${1}_O}}
3004
3005     if [ -n "$_depflags" ]; then
3006         eval ${1}_DEPFLAGS=\$_depflags
3007     else
3008         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3009         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3010         eval DEP${1}FLAGS=\$_flags
3011     fi
3012 }
3013
3014 probe_cc cc "$cc"
3015 cflags_filter=$_flags_filter
3016 cflags_speed=$_cflags_speed
3017 cflags_size=$_cflags_size
3018 cflags_noopt=$_cflags_noopt
3019 add_cflags $_flags $_cflags
3020 cc_ldflags=$_ldflags
3021 set_ccvars CC
3022
3023 probe_cc hostcc "$host_cc"
3024 host_cflags_filter=$_flags_filter
3025 add_host_cflags  $_flags $_cflags
3026 set_ccvars HOSTCC
3027
3028 test -n "$cc_type" && enable $cc_type ||
3029     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3030
3031 : ${as_default:=$cc}
3032 : ${dep_cc_default:=$cc}
3033 : ${ld_default:=$cc}
3034 : ${host_ld_default:=$host_cc}
3035 set_default ar as dep_cc ld host_ld
3036
3037 probe_cc as "$as"
3038 asflags_filter=$_flags_filter
3039 add_asflags $_flags $_cflags
3040 set_ccvars AS
3041
3042 probe_cc ld "$ld"
3043 ldflags_filter=$_flags_filter
3044 add_ldflags $_flags $_ldflags
3045 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3046 LD_O=${_ld_o-$LD_O}
3047 LD_LIB=${_ld_lib-$LD_LIB}
3048 LD_PATH=${_ld_path-$LD_PATH}
3049
3050 probe_cc hostld "$host_ld"
3051 host_ldflags_filter=$_flags_filter
3052 add_host_ldflags $_flags $_ldflags
3053 HOSTLD_O=${_ld_o-$HOSTLD_O}
3054
3055 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3056     probe_cc depcc "$dep_cc"
3057     CCDEP=${_DEPCMD:-$DEPCMD}
3058     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3059     DEPCCFLAGS=$_flags
3060 fi
3061
3062 if $ar 2>&1 | grep -q Microsoft; then
3063     arflags="-nologo"
3064     ar_o='-out:$@'
3065 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3066     arflags="rq"
3067     ar_o='$@'
3068 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3069     arflags='-Xany -r -c'
3070     ar_o='$@'
3071 else
3072     arflags="rc"
3073     ar_o='$@'
3074 fi
3075
3076 add_cflags $extra_cflags
3077 add_cxxflags $extra_cxxflags
3078 add_asflags $extra_cflags
3079
3080 if test -n "$sysroot"; then
3081     case "$cc_type" in
3082         gcc|llvm_gcc|clang)
3083             add_cppflags --sysroot="$sysroot"
3084             add_ldflags --sysroot="$sysroot"
3085         ;;
3086         tms470)
3087             add_cppflags -I"$sysinclude"
3088             add_ldflags  --sysroot="$sysroot"
3089         ;;
3090     esac
3091 fi
3092
3093 if test "$cpu" = host; then
3094     enabled cross_compile &&
3095         die "--cpu=host makes no sense when cross-compiling."
3096
3097     case "$cc_type" in
3098         gcc|llvm_gcc)
3099             check_native(){
3100                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3101                 sed -n "/cc1.*$1=/{
3102                             s/.*$1=\\([^ ]*\\).*/\\1/
3103                             p
3104                             q
3105                         }" $TMPE
3106             }
3107             cpu=$(check_native -march || check_native -mcpu)
3108         ;;
3109     esac
3110
3111     test "${cpu:-host}" = host &&
3112         die "--cpu=host not supported with compiler $cc"
3113 fi
3114
3115 # Deal with common $arch aliases
3116 case "$arch" in
3117     aarch64|arm64)
3118         arch="aarch64"
3119     ;;
3120     arm*|iPad*|iPhone*)
3121         arch="arm"
3122     ;;
3123     mips*|IP*)
3124         arch="mips"
3125     ;;
3126     parisc*|hppa*)
3127         arch="parisc"
3128     ;;
3129     "Power Macintosh"|ppc*|powerpc*)
3130         arch="ppc"
3131     ;;
3132     s390|s390x)
3133         arch="s390"
3134     ;;
3135     sh4|sh)
3136         arch="sh4"
3137     ;;
3138     sun4u|sparc*)
3139         arch="sparc"
3140     ;;
3141     tilegx|tile-gx)
3142         arch="tilegx"
3143     ;;
3144     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3145         arch="x86"
3146     ;;
3147 esac
3148
3149 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3150 enable $arch
3151
3152 # Add processor-specific flags
3153 if enabled aarch64; then
3154
3155     case $cpu in
3156         armv*)
3157             cpuflags="-march=$cpu"
3158         ;;
3159         *)
3160             cpuflags="-mcpu=$cpu"
3161         ;;
3162     esac
3163
3164 elif enabled alpha; then
3165
3166     cpuflags="-mcpu=$cpu"
3167
3168 elif enabled arm; then
3169
3170     check_arm_arch() {
3171         check_cpp_condition stddef.h \
3172             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3173             $cpuflags
3174     }
3175
3176     probe_arm_arch() {
3177         if   check_arm_arch 4;        then echo armv4;
3178         elif check_arm_arch 4T;       then echo armv4t;
3179         elif check_arm_arch 5;        then echo armv5;
3180         elif check_arm_arch 5E;       then echo armv5e;
3181         elif check_arm_arch 5T;       then echo armv5t;
3182         elif check_arm_arch 5TE;      then echo armv5te;
3183         elif check_arm_arch 5TEJ;     then echo armv5te;
3184         elif check_arm_arch 6;        then echo armv6;
3185         elif check_arm_arch 6J;       then echo armv6j;
3186         elif check_arm_arch 6K;       then echo armv6k;
3187         elif check_arm_arch 6Z;       then echo armv6z;
3188         elif check_arm_arch 6ZK;      then echo armv6zk;
3189         elif check_arm_arch 6T2;      then echo armv6t2;
3190         elif check_arm_arch 7;        then echo armv7;
3191         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3192         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3193         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3194         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3195         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3196         fi
3197     }
3198
3199     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3200
3201     case $cpu in
3202         armv*)
3203             cpuflags="-march=$cpu"
3204             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3205         ;;
3206         *)
3207             cpuflags="-mcpu=$cpu"
3208             case $cpu in
3209                 cortex-a*)                               subarch=armv7a  ;;
3210                 cortex-r*)                               subarch=armv7r  ;;
3211                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3212                 arm11*)                                  subarch=armv6   ;;
3213                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3214                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3215                 *)                             subarch=$(probe_arm_arch) ;;
3216             esac
3217         ;;
3218     esac
3219
3220     case "$subarch" in
3221         armv5t*)    enable fast_clz                ;;
3222         armv[6-8]*) enable fast_clz fast_unaligned ;;
3223     esac
3224
3225 elif enabled avr32; then
3226
3227     case $cpu in
3228         ap7[02]0[0-2])
3229             subarch="avr32_ap"
3230             cpuflags="-mpart=$cpu"
3231         ;;
3232         ap)
3233             subarch="avr32_ap"
3234             cpuflags="-march=$cpu"
3235         ;;
3236         uc3[ab]*)
3237             subarch="avr32_uc"
3238             cpuflags="-mcpu=$cpu"
3239         ;;
3240         uc)
3241             subarch="avr32_uc"
3242             cpuflags="-march=$cpu"
3243         ;;
3244     esac
3245
3246 elif enabled bfin; then
3247
3248     cpuflags="-mcpu=$cpu"
3249
3250 elif enabled mips; then
3251
3252     cpuflags="-march=$cpu"
3253
3254     case $cpu in
3255         24kc)
3256             disable mipsfpu
3257             disable mipsdspr1
3258             disable mipsdspr2
3259         ;;
3260         24kf*)
3261             disable mipsdspr1
3262             disable mipsdspr2
3263         ;;
3264         24kec|34kc|1004kc)
3265             disable mipsfpu
3266             disable mipsdspr2
3267         ;;
3268         24kef*|34kf*|1004kf*)
3269             disable mipsdspr2
3270         ;;
3271         74kc)
3272             disable mipsfpu
3273         ;;
3274     esac
3275
3276 elif enabled ppc; then
3277
3278     case $(tolower $cpu) in
3279         601|ppc601|powerpc601)
3280             cpuflags="-mcpu=601"
3281             disable altivec
3282         ;;
3283         603*|ppc603*|powerpc603*)
3284             cpuflags="-mcpu=603"
3285             disable altivec
3286         ;;
3287         604*|ppc604*|powerpc604*)
3288             cpuflags="-mcpu=604"
3289             disable altivec
3290         ;;
3291         g3|75*|ppc75*|powerpc75*)
3292             cpuflags="-mcpu=750"
3293             disable altivec
3294         ;;
3295         g4|745*|ppc745*|powerpc745*)
3296             cpuflags="-mcpu=7450"
3297         ;;
3298         74*|ppc74*|powerpc74*)
3299             cpuflags="-mcpu=7400"
3300         ;;
3301         g5|970|ppc970|powerpc970)
3302             cpuflags="-mcpu=970"
3303         ;;
3304         power[3-7]*)
3305             cpuflags="-mcpu=$cpu"
3306         ;;
3307         cell)
3308             cpuflags="-mcpu=cell"
3309             enable ldbrx
3310         ;;
3311         e500mc)
3312             cpuflags="-mcpu=e500mc"
3313             disable altivec
3314         ;;
3315         e500v2)
3316             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3317             disable altivec
3318         ;;
3319         e500)
3320             cpuflags="-mcpu=8540 -mhard-float"
3321             disable altivec
3322         ;;
3323     esac
3324
3325 elif enabled sparc; then
3326
3327     case $cpu in
3328         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3329             cpuflags="-mcpu=$cpu"
3330             disable vis
3331         ;;
3332         ultrasparc*|niagara[234])
3333             cpuflags="-mcpu=$cpu"
3334         ;;
3335     esac
3336
3337 elif enabled x86; then
3338
3339     case $cpu in
3340         i[345]86|pentium)
3341             cpuflags="-march=$cpu"
3342             disable mmx
3343         ;;
3344         # targets that do NOT support nopl and conditional mov (cmov)
3345         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3346             cpuflags="-march=$cpu"
3347             disable i686
3348         ;;
3349         # targets that do support nopl and conditional mov (cmov)
3350         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3351             cpuflags="-march=$cpu"
3352             enable i686
3353             enable fast_cmov
3354         ;;
3355         # targets that do support conditional mov but on which it's slow
3356         pentium4|pentium4m|prescott|nocona)
3357             cpuflags="-march=$cpu"
3358             enable i686
3359             disable fast_cmov
3360         ;;
3361     esac
3362
3363 fi
3364
3365 if [ "$cpu" != generic ]; then
3366     add_cflags  $cpuflags
3367     add_asflags $cpuflags
3368 fi
3369
3370 # compiler sanity check
3371 check_exec <<EOF
3372 int main(void){ return 0; }
3373 EOF
3374 if test "$?" != 0; then
3375     echo "$cc is unable to create an executable file."
3376     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3377         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3378         echo "Only do this if you know what cross compiling means."
3379     fi
3380     die "C compiler test failed."
3381 fi
3382
3383 add_cppflags -D_ISOC99_SOURCE
3384 add_cxxflags -D__STDC_CONSTANT_MACROS
3385 check_cflags -std=c99
3386 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3387 #include <stdlib.h>
3388 EOF
3389 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3390 #include <stdlib.h>
3391 EOF
3392
3393 check_host_cflags -std=c99
3394 check_host_cflags -Wall
3395
3396 check_64bit(){
3397     arch32=$1
3398     arch64=$2
3399     expr=$3
3400     check_code cc "" "int test[2*($expr) - 1]" &&
3401         subarch=$arch64 || subarch=$arch32
3402 }
3403
3404 case "$arch" in
3405     aarch64|alpha|ia64)
3406         spic=$shared
3407     ;;
3408     mips)
3409         check_64bit mips mips64 '_MIPS_SIM > 1'
3410         spic=$shared
3411     ;;
3412     parisc)
3413         check_64bit parisc parisc64 'sizeof(void *) > 4'
3414         spic=$shared
3415     ;;
3416     ppc)
3417         check_64bit ppc ppc64 'sizeof(void *) > 4'
3418         spic=$shared
3419     ;;
3420     sparc)
3421         check_64bit sparc sparc64 'sizeof(void *) > 4'
3422         spic=$shared
3423     ;;
3424     x86)
3425         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3426         if test "$subarch" = "x86_64"; then
3427             spic=$shared
3428         fi
3429     ;;
3430     ppc)
3431         check_cc <<EOF && subarch="ppc64"
3432         int test[(int)sizeof(char*) - 7];
3433 EOF
3434     ;;
3435 esac
3436
3437 enable $subarch
3438 enabled spic && enable_weak pic
3439
3440 # OS specific
3441 case $target_os in
3442     aix)
3443         SHFLAGS=-shared
3444         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3445         enabled shared && add_ldflags -Wl,-brtl
3446         ;;
3447     haiku)
3448         prefix_default="/boot/common"
3449         network_extralibs="-lnetwork"
3450         host_libs=
3451         ;;
3452     sunos)
3453         SHFLAGS='-shared -Wl,-h,$$(@F)'
3454         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3455         network_extralibs="-lsocket -lnsl"
3456         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3457         # When using suncc to build, the Solaris linker will mark
3458         # an executable with each instruction set encountered by
3459         # the Solaris assembler.  As our libraries contain their own
3460         # guards for processor-specific code, instead suppress
3461         # generation of the HWCAPS ELF section on Solaris x86 only.
3462         enabled_all suncc x86 &&
3463             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3464             add_ldflags -Wl,-M,mapfile
3465         nm_default='nm -P -g'
3466         ;;
3467     netbsd)
3468         disable symver
3469         oss_indev_extralibs="-lossaudio"
3470         oss_outdev_extralibs="-lossaudio"
3471         enabled gcc || check_ldflags -Wl,-zmuldefs
3472         ;;
3473     openbsd|bitrig)
3474         disable symver
3475         SHFLAGS='-shared'
3476         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3477         SLIB_INSTALL_LINKS=
3478         oss_indev_extralibs="-lossaudio"
3479         oss_outdev_extralibs="-lossaudio"
3480         ;;
3481     dragonfly)
3482         disable symver
3483         ;;
3484     freebsd)
3485         ;;
3486     bsd/os)
3487         add_extralibs -lpoll -lgnugetopt
3488         strip="strip -d"
3489         ;;
3490     darwin)
3491         gas="gas-preprocessor.pl $cc"
3492         enabled ppc && add_asflags -force_cpusubtype_ALL
3493         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3494         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3495         strip="${strip} -x"
3496         add_ldflags -Wl,-dynamic,-search_paths_first
3497         SLIBSUF=".dylib"
3498         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3499         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3500         objformat="macho"
3501         enabled x86_64 && objformat="macho64"
3502         enabled_any pic shared ||
3503             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3504         ;;
3505     mingw32*)
3506         if test $target_os = "mingw32ce"; then
3507             disable network
3508         else
3509             target_os=mingw32
3510         fi
3511         LIBTARGET=i386
3512         if enabled x86_64; then
3513             LIBTARGET="i386:x86-64"
3514         elif enabled arm; then
3515             LIBTARGET=arm-wince
3516         fi
3517         check_ldflags -Wl,--nxcompat
3518         check_ldflags -Wl,--dynamicbase
3519         shlibdir_default="$bindir_default"
3520         SLIBPREF=""
3521         SLIBSUF=".dll"
3522         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3523         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3524         dlltool="${cross_prefix}dlltool"
3525         if check_cmd lib.exe -list; then
3526             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3527             if enabled x86_64; then
3528                 LIBTARGET=x64
3529             fi
3530         elif check_cmd $dlltool --version; then
3531             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3532         fi
3533         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3534         SLIB_INSTALL_LINKS=
3535         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3536         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3537         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3538         objformat="win32"
3539         ranlib=:
3540         enable dos_paths
3541         ;;
3542     win32|win64)
3543         if enabled shared; then
3544             # Link to the import library instead of the normal static library
3545             # for shared libs.
3546             LD_LIB='%.lib'
3547             # Cannot build shared and static libs at the same time with MSVC.
3548             disable static
3549         fi
3550         shlibdir_default="$bindir_default"
3551         SLIBPREF=""
3552         SLIBSUF=".dll"
3553         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3554         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3555         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3556         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3557         SLIB_INSTALL_LINKS=
3558         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3559         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3560         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3561         objformat="win32"
3562         ranlib=:
3563         enable dos_paths
3564         ;;
3565     cygwin*)
3566         target_os=cygwin
3567         shlibdir_default="$bindir_default"
3568         SLIBPREF="cyg"
3569         SLIBSUF=".dll"
3570         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3571         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3572         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3573         SLIB_INSTALL_LINKS=
3574         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3575         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3576         objformat="win32"
3577         enable dos_paths
3578         ;;
3579     *-dos|freedos|opendos)
3580         network_extralibs="-lsocket"
3581         objformat="coff"
3582         enable dos_paths
3583         add_cppflags -U__STRICT_ANSI__
3584         ;;
3585     linux)
3586         enable dv1394
3587         ;;
3588     irix*)
3589         target_os=irix
3590         ranlib="echo ignoring ranlib"
3591         ;;
3592     os/2*)
3593         strip="lxlite -CS"
3594         ln_s="cp -f"
3595         objformat="aout"
3596         add_cppflags -D_GNU_SOURCE
3597         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3598         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3599         LIBSUF="_s.a"
3600         SLIBPREF=""
3601         SLIBSUF=".dll"
3602         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3603         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3604         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3605             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3606             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3607             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3608             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3609             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3610         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3611             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3612         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3613         enable dos_paths
3614         enable_weak os2threads
3615         ;;
3616     gnu/kfreebsd)
3617         add_cppflags -D_BSD_SOURCE
3618         ;;
3619     gnu)
3620         ;;
3621     qnx)
3622         add_cppflags -D_QNX_SOURCE
3623         network_extralibs="-lsocket"
3624         ;;
3625     symbian)
3626         SLIBSUF=".dll"
3627         enable dos_paths
3628         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3629         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3630         add_ldflags -Wl,--target1-abs,--no-undefined \
3631                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3632                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3633         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3634                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3635                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3636         ;;
3637     osf1)
3638         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3639         ;;
3640     minix)
3641         ;;
3642     plan9)
3643         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3644                      -D_REENTRANT_SOURCE        \
3645                      -D_RESEARCH_SOURCE         \
3646                      -DFD_SETSIZE=96            \
3647                      -DHAVE_SOCK_OPTS
3648         add_compat strtod.o strtod=avpriv_strtod
3649         network_extralibs='-lbsd'
3650         exeobjs=compat/plan9/main.o
3651         disable ffserver
3652         cp_f='cp'
3653         ;;
3654     none)
3655         ;;
3656     *)
3657         die "Unknown OS '$target_os'."
3658         ;;
3659 esac
3660
3661 # determine libc flavour
3662
3663 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3664 if check_cpp_condition features.h "defined __UCLIBC__"; then
3665     libc_type=uclibc
3666     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3667 elif check_cpp_condition features.h "defined __GLIBC__"; then
3668     libc_type=glibc
3669     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3670 # MinGW headers can be installed on Cygwin, so check for newlib first.
3671 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3672     libc_type=newlib
3673     add_cppflags -U__STRICT_ANSI__
3674 elif check_header _mingw.h; then
3675     libc_type=mingw
3676     check_cpp_condition _mingw.h \
3677         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3678             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3679         die "ERROR: MinGW runtime version must be >= 3.15."
3680     add_cppflags -U__STRICT_ANSI__
3681     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3682             __MINGW64_VERSION_MAJOR < 3"; then
3683         add_compat msvcrt/snprintf.o
3684         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3685     else
3686         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3687     fi
3688 elif check_func_headers stdlib.h _get_doserrno; then
3689     libc_type=msvcrt
3690     add_compat strtod.o strtod=avpriv_strtod
3691     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3692                                  _snprintf=avpriv_snprintf  \
3693                                  vsnprintf=avpriv_vsnprintf
3694     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3695     # 0x601 by default unless something else is set by the user.
3696     # This can easily lead to us detecting functions only present
3697     # in such new versions and producing binaries requiring windows 7.0.
3698     # Therefore explicitly set the default to XP unless the user has
3699     # set something else on the command line.
3700     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3701 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3702     libc_type=klibc
3703 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3704     libc_type=bionic
3705     add_compat strtod.o strtod=avpriv_strtod
3706 fi
3707
3708 test -n "$libc_type" && enable $libc_type
3709
3710 # hacks for compiler/libc/os combinations
3711
3712 if enabled_all tms470 glibc; then
3713     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3714     add_cppflags -D__USER_LABEL_PREFIX__=
3715     add_cppflags -D__builtin_memset=memset
3716     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3717     add_cflags   -pds=48    # incompatible redefinition of macro
3718 fi
3719
3720 if enabled_all ccc glibc; then
3721     add_ldflags -Wl,-z,now  # calls to libots crash without this
3722 fi
3723
3724 esc(){
3725     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3726 }
3727
3728 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3729
3730 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3731
3732 set_default $PATHS_LIST
3733 set_default nm
3734
3735 # we need to build at least one lib type
3736 if ! enabled_any static shared; then
3737     cat <<EOF
3738 At least one library type must be built.
3739 Specify --enable-static to build the static libraries or --enable-shared to
3740 build the shared libraries as well. To only build the shared libraries specify
3741 --disable-static in addition to --enable-shared.
3742 EOF
3743     exit 1;
3744 fi
3745
3746 # backward compatibility layer for incompatible_libav/fork_abi
3747 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3748 enabled incompatible_libav_abi && enable incompatible_fork_abi
3749
3750 die_license_disabled() {
3751     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3752 }
3753
3754 die_license_disabled_gpl() {
3755     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3756 }
3757
3758 die_license_disabled gpl frei0r
3759 die_license_disabled gpl libcdio
3760 die_license_disabled gpl libutvideo
3761 die_license_disabled gpl libvidstab
3762 die_license_disabled gpl libx264
3763 die_license_disabled gpl libxavs
3764 die_license_disabled gpl libxvid
3765 die_license_disabled gpl x11grab
3766
3767 die_license_disabled nonfree libaacplus
3768 die_license_disabled nonfree libfaac
3769 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3770 enabled gpl && die_license_disabled_gpl nonfree openssl
3771
3772 die_license_disabled version3 libopencore_amrnb
3773 die_license_disabled version3 libopencore_amrwb
3774 die_license_disabled version3 libvo_aacenc
3775 die_license_disabled version3 libvo_amrwbenc
3776
3777 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3778
3779 disabled optimizations || check_cflags -fomit-frame-pointer
3780
3781 enable_weak_pic() {
3782     disabled pic && return
3783     enable pic
3784     add_cppflags -DPIC
3785     case "$target_os" in
3786     mingw*|cygwin*)
3787         ;;
3788     *)
3789         add_cflags -fPIC
3790         ;;
3791     esac
3792     add_asflags  -fPIC
3793 }
3794
3795 enabled pic && enable_weak_pic
3796
3797 check_cc <<EOF || die "Symbol mangling check failed."
3798 int ff_extern;
3799 EOF
3800 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3801 extern_prefix=${sym%%ff_extern*}
3802
3803 check_cc <<EOF && enable_weak inline_asm
3804 void foo(void) { __asm__ volatile ("" ::); }
3805 EOF
3806
3807 _restrict=
3808 for restrict_keyword in restrict __restrict__ __restrict; do
3809     check_cc <<EOF && _restrict=$restrict_keyword && break
3810 void foo(char * $restrict_keyword p);
3811 EOF
3812 done
3813
3814 check_cc <<EOF && enable pragma_deprecated
3815 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3816 EOF
3817
3818 check_cc <<EOF && enable attribute_packed
3819 struct { int x; } __attribute__((packed)) x;
3820 EOF
3821
3822 check_cc <<EOF && enable attribute_may_alias
3823 union { int x; } __attribute__((may_alias)) x;
3824 EOF
3825
3826 check_cc <<EOF || die "endian test failed"
3827 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3828 EOF
3829 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3830
3831 check_inline_asm inline_asm_labels '"1:\n"'
3832
3833 if enabled alpha; then
3834
3835     check_cflags -mieee
3836
3837 elif enabled arm; then
3838
3839     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3840 float func(float a, float b){ return a+b; }
3841 EOF
3842
3843     enabled thumb && check_cflags -mthumb || check_cflags -marm
3844     nogas=die
3845
3846     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3847         enable vfp_args
3848     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3849         case "${cross_prefix:-$cc}" in
3850             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3851             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3852 __asm__ (".eabi_attribute 28, 1");
3853 int main(void) { return 0; }
3854 EOF
3855         esac
3856         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3857     fi
3858
3859     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3860     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3861     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3862     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3863     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3864     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3865
3866     [ $target_os = linux ] ||
3867         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3868             $ARCH_EXT_LIST_ARM
3869
3870     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3871     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3872
3873     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3874
3875 elif enabled mips; then
3876
3877     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3878     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3879      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3880     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3881      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3882     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3883      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3884     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3885      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3886
3887 elif enabled parisc; then
3888
3889     if enabled gcc; then
3890         case $($cc -dumpversion) in
3891             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3892         esac
3893     fi
3894
3895 elif enabled ppc; then
3896
3897     enable local_aligned_8 local_aligned_16
3898
3899     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3900     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3901     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3902     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3903
3904     # AltiVec flags: The FSF version of GCC differs from the Apple version
3905     if enabled altivec; then
3906         if ! enabled_any pic ppc64; then
3907             nogas=warn
3908         fi
3909         check_cflags -maltivec -mabi=altivec &&
3910         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3911         check_cflags -faltivec
3912
3913         # check if our compiler supports Motorola AltiVec C API
3914         check_cc <<EOF || disable altivec
3915 $inc_altivec_h
3916 int main(void) {
3917     vector signed int v1 = (vector signed int) { 0 };
3918     vector signed int v2 = (vector signed int) { 1 };
3919     v1 = vec_add(v1, v2);
3920     return 0;
3921 }
3922 EOF
3923
3924         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3925     fi
3926
3927 elif enabled sparc; then
3928
3929     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3930
3931 elif enabled x86; then
3932
3933     check_builtin rdtsc    intrin.h   "__rdtsc()"
3934     check_builtin mm_empty mmintrin.h "_mm_empty()"
3935
3936     enable local_aligned_8 local_aligned_16
3937
3938     # check whether EBP is available on x86
3939     # As 'i' is stored on the stack, this program will crash
3940     # if the base pointer is used to access it because the
3941     # base pointer is cleared in the inline assembly code.
3942     check_exec_crash <<EOF && enable ebp_available
3943 volatile int i=0;
3944 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3945 return i;
3946 EOF
3947
3948     # check whether EBX is available on x86
3949     check_inline_asm ebx_available '""::"b"(0)' &&
3950         check_inline_asm ebx_available '"":::"%ebx"'
3951
3952     # check whether xmm clobbers are supported
3953     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3954
3955     # check whether binutils is new enough to compile SSSE3/MMXEXT
3956     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3957     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3958
3959     if ! disabled_any asm mmx yasm; then
3960         if check_cmd $yasmexe --version; then
3961             enabled x86_64 && yasm_extra="-m amd64"
3962             yasm_debug="-g dwarf2"
3963         elif check_cmd nasm -v; then
3964             yasmexe=nasm
3965             yasm_debug="-g -F dwarf"
3966             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3967         fi
3968
3969         YASMFLAGS="-f $objformat $yasm_extra"
3970         enabled pic               && append YASMFLAGS "-DPIC"
3971         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3972         case "$objformat" in
3973             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3974         esac
3975
3976         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3977             die "yasm not found, use --disable-yasm for a crippled build"
3978         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
3979         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3980         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3981     fi
3982
3983     case "$cpu" in
3984         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3985             disable fast_clz
3986         ;;
3987     esac
3988
3989 fi
3990
3991 if enabled asm; then
3992     as=${gas:=$as}
3993     check_as <<EOF && enable gnu_as || \
3994         $nogas "GNU assembler not found, install gas-preprocessor"
3995 .macro m n
3996 \n: .int 0
3997 .endm
3998 m x
3999 EOF
4000 fi
4001
4002 check_ldflags -Wl,--as-needed
4003
4004 if check_func dlopen; then
4005     ldl=
4006 elif check_func dlopen -ldl; then
4007     ldl=-ldl
4008 fi
4009
4010 if ! disabled network; then
4011     check_type "sys/types.h sys/socket.h" socklen_t
4012     check_type netdb.h "struct addrinfo"
4013     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4014     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4015     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4016     check_type netinet/in.h "struct sockaddr_in6"
4017     check_type poll.h "struct pollfd"
4018     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4019     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4020     check_type netinet/sctp.h "struct sctp_event_subscribe"
4021     check_func getaddrinfo $network_extralibs
4022     check_func getservbyport $network_extralibs
4023     # Prefer arpa/inet.h over winsock2
4024     if check_header arpa/inet.h ; then
4025         check_func closesocket
4026     elif check_header winsock2.h ; then
4027         check_func_headers winsock2.h closesocket -lws2 &&
4028             network_extralibs="-lws2" ||
4029         { check_func_headers winsock2.h closesocket -lws2_32 &&
4030             network_extralibs="-lws2_32"; }
4031         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4032         check_type ws2tcpip.h socklen_t
4033         check_type ws2tcpip.h "struct addrinfo"
4034         check_type ws2tcpip.h "struct group_source_req"
4035         check_type ws2tcpip.h "struct ip_mreq_source"
4036         check_type ws2tcpip.h "struct ipv6_mreq"
4037         check_type winsock2.h "struct pollfd"
4038         check_type ws2tcpip.h "struct sockaddr_in6"