975fae404bcc2f216f4b4b8ad7cd2c76c5253a1e
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
108
109 Program options:
110   --disable-programs       do not build command line programs
111   --disable-ffmpeg         disable ffmpeg build
112   --disable-ffplay         disable ffplay build
113   --disable-ffprobe        disable ffprobe build
114   --disable-ffserver       disable ffserver build
115
116 Documentation options:
117   --disable-doc            do not build documentation
118   --disable-htmlpages      do not build HTML documentation pages
119   --disable-manpages       do not build man documentation pages
120   --disable-podpages       do not build POD documentation pages
121   --disable-txtpages       do not build text documentation pages
122
123 Component options:
124   --disable-avdevice       disable libavdevice build
125   --disable-avcodec        disable libavcodec build
126   --disable-avformat       disable libavformat build
127   --disable-avutil         disable libavutil build
128   --disable-swresample     disable libswresample build
129   --disable-swscale        disable libswscale build
130   --disable-postproc       disable libpostproc build
131   --disable-avfilter       disable libavfilter build
132   --enable-avresample      enable libavresample build [no]
133   --disable-pthreads       disable pthreads [auto]
134   --disable-w32threads     disable Win32 threads [auto]
135   --disable-os2threads     disable OS/2 threads [auto]
136   --disable-network        disable network support [no]
137   --disable-dct            disable DCT code
138   --disable-dwt            disable DWT code
139   --disable-error-resilience disable error resilience code
140   --disable-lsp            disable LSP code
141   --disable-lzo            disable LZO decoder code
142   --disable-mdct           disable MDCT code
143   --disable-rdft           disable RDFT code
144   --disable-fft            disable FFT code
145
146 Hardware accelerators:
147   --disable-dxva2          disable DXVA2 code [autodetect]
148   --disable-vaapi          disable VAAPI code [autodetect]
149   --enable-vda             enable VDA code
150   --disable-vdpau          disable VDPAU code [autodetect]
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190   --enable-avisynth        enable reading of AviSynth script files [no]
191   --disable-bzlib          disable bzlib [autodetect]
192   --enable-fontconfig      enable fontconfig
193   --enable-frei0r          enable frei0r video filtering
194   --enable-gnutls          enable gnutls [no]
195   --disable-iconv          disable iconv [autodetect]
196   --enable-ladspa          enable LADSPA audio filtering
197   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
198   --enable-libass          enable libass subtitles rendering [no]
199   --enable-libbluray       enable BluRay reading using libbluray [no]
200   --enable-libcaca         enable textual display using libcaca
201   --enable-libcelt         enable CELT decoding via libcelt [no]
202   --enable-libcdio         enable audio CD grabbing with libcdio
203   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
204                            and libraw1394 [no]
205   --enable-libfaac         enable AAC encoding via libfaac [no]
206   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
207   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
208   --enable-libfreetype     enable libfreetype [no]
209   --enable-libgme          enable Game Music Emu via libgme [no]
210   --enable-libgsm          enable GSM de/encoding via libgsm [no]
211   --enable-libiec61883     enable iec61883 via libiec61883 [no]
212   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
213   --enable-libmodplug      enable ModPlug via libmodplug [no]
214   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
215   --enable-libnut          enable NUT (de)muxing via libnut,
216                            native (de)muxer exists [no]
217   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
218   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
219   --enable-libopencv       enable video filtering via libopencv [no]
220   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
221   --enable-libopus         enable Opus decoding via libopus [no]
222   --enable-libpulse        enable Pulseaudio input via libpulse [no]
223   --enable-libquvi         enable quvi input via libquvi [no]
224   --enable-librtmp         enable RTMP[E] support via librtmp [no]
225   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
226   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
227   --enable-libsoxr         enable Include libsoxr resampling [no]
228   --enable-libspeex        enable Speex de/encoding via libspeex [no]
229   --enable-libssh          enable SFTP protocol via libssh [no]
230   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
231   --enable-libtheora       enable Theora encoding via libtheora [no]
232   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
233   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
234   --enable-libv4l2         enable libv4l2/v4l-utils [no]
235   --enable-libvidstab      enable video stabilization using vid.stab [no]
236   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
237   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
238   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
239                            native implementation exists [no]
240   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
241   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
242   --enable-libx264         enable H.264 encoding via x264 [no]
243   --enable-libxavs         enable AVS encoding via xavs [no]
244   --enable-libxvid         enable Xvid encoding via xvidcore,
245                            native MPEG-4/Xvid encoder exists [no]
246   --enable-libzmq          enable message passing via libzmq [no]
247   --enable-libzvbi         enable teletext support via libzvbi [no]
248   --enable-openal          enable OpenAL 1.1 capture support [no]
249   --enable-opencl          enable OpenCL code
250   --enable-openssl         enable openssl [no]
251   --enable-x11grab         enable X11 grabbing [no]
252   --disable-zlib           disable zlib [autodetect]
253
254 Advanced options (experts only):
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool NM [$nm_default]
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --cxx=CXX                use C compiler CXX [$cxx_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD [$ld_default]
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-libs=ELIBS       add ELIBS [$ELIBS]
283   --extra-version=STRING   version string suffix []
284   --optflags=OPTFLAGS      override optimization-related compiler flags
285   --build-suffix=SUFFIX    library name suffix []
286   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
287   --progs-suffix=SUFFIX    program name suffix []
288   --arch=ARCH              select architecture [$arch]
289   --cpu=CPU                select the minimum required CPU (affects
290                            instruction selection, may crash on older CPUs)
291   --enable-pic             build position-independent code
292   --enable-sram            allow use of on-chip SRAM
293   --enable-thumb           compile for Thumb instruction set
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
300   --enable-lto             use link-time optimization
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembler optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-amd3dnow       disable 3DNow! optimizations
306   --disable-amd3dnowext    disable 3DNow! extended optimizations
307   --disable-mmx            disable MMX optimizations
308   --disable-mmxext         disable MMXEXT optimizations
309   --disable-sse            disable SSE optimizations
310   --disable-sse2           disable SSE2 optimizations
311   --disable-sse3           disable SSE3 optimizations
312   --disable-ssse3          disable SSSE3 optimizations
313   --disable-sse4           disable SSE4 optimizations
314   --disable-sse42          disable SSE4.2 optimizations
315   --disable-avx            disable AVX optimizations
316   --disable-fma4           disable FMA4 optimizations
317   --disable-armv5te        disable armv5te optimizations
318   --disable-armv6          disable armv6 optimizations
319   --disable-armv6t2        disable armv6t2 optimizations
320   --disable-vfp            disable VFP optimizations
321   --disable-neon           disable NEON optimizations
322   --disable-vis            disable VIS optimizations
323   --disable-inline-asm     disable use of inline assembler
324   --disable-yasm           disable use of yasm assembler
325   --disable-mips32r2       disable MIPS32R2 optimizations
326   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
327   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
328   --disable-mipsfpu        disable floating point MIPS optimizations
329   --disable-fast-unaligned consider unaligned accesses slow
330
331 Developer options (useful when working on FFmpeg itself):
332   --disable-debug          disable debugging symbols
333   --enable-debug=LEVEL     set the debug level [$debuglevel]
334   --disable-optimizations  disable compiler optimizations
335   --enable-extra-warnings  enable more compiler warnings
336   --disable-stripping      disable stripping of executables and shared libraries
337   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
338                            2 causes a slowdown at runtime.
339   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
340   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
341                            leaks and errors, using the specified valgrind binary.
342                            Cannot be combined with --target-exec
343   --enable-ftrapv          Trap arithmetic overflows
344   --samples=PATH           location of test samples for FATE, if not set use
345                            \$FATE_SAMPLES at make invocation time.
346   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
347                            should be used only for debugging purposes)
348   --enable-random          randomly enable/disable components
349   --disable-random
350   --enable-random=LIST     randomly enable/disable specific components or
351   --disable-random=LIST    component groups. LIST is a comma-separated list
352                            of NAME[:PROB] entries where NAME is a component
353                            (group) and PROB the probability associated with
354                            NAME (default 0.5).
355   --random-seed=VALUE      seed value for --enable/disable-random
356
357 NOTE: Object files are built at the place where configure is launched.
358 EOF
359   exit 0
360 }
361
362 quotes='""'
363
364 log(){
365     echo "$@" >> $logfile
366 }
367
368 log_file(){
369     log BEGIN $1
370     pr -n -t $1 >> $logfile
371     log END $1
372 }
373
374 echolog(){
375     log "$@"
376     echo "$@"
377 }
378
379 warn(){
380     log "WARNING: $*"
381     WARNINGS="${WARNINGS}WARNING: $*\n"
382 }
383
384 die(){
385     echolog "$@"
386     cat <<EOF
387
388 If you think configure made a mistake, make sure you are using the latest
389 version from Git.  If the latest version fails, report the problem to the
390 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
391 EOF
392     if disabled logging; then
393         cat <<EOF
394 Rerun configure with logging enabled (do not use --disable-logging), and
395 include the log this produces with your report.
396 EOF
397     else
398         cat <<EOF
399 Include the log file "$logfile" produced by configure as this will help
400 solving the problem.
401 EOF
402     fi
403     exit 1
404 }
405
406 # Avoid locale weirdness, besides we really just want to translate ASCII.
407 toupper(){
408     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
409 }
410
411 tolower(){
412     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
413 }
414
415 c_escape(){
416     echo "$*" | sed 's/["\\]/\\\0/g'
417 }
418
419 sh_quote(){
420     v=$(echo "$1" | sed "s/'/'\\\\''/g")
421     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
422     echo "$v"
423 }
424
425 cleanws(){
426     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
427 }
428
429 filter(){
430     pat=$1
431     shift
432     for v; do
433         eval "case $v in $pat) echo $v ;; esac"
434     done
435 }
436
437 filter_out(){
438     pat=$1
439     shift
440     for v; do
441         eval "case $v in $pat) ;; *) echo $v ;; esac"
442     done
443 }
444
445 map(){
446     m=$1
447     shift
448     for v; do eval $m; done
449 }
450
451 add_suffix(){
452     suffix=$1
453     shift
454     for v; do echo ${v}${suffix}; done
455 }
456
457 set_all(){
458     value=$1
459     shift
460     for var in $*; do
461         eval $var=$value
462     done
463 }
464
465 set_weak(){
466     value=$1
467     shift
468     for var; do
469         eval : \${$var:=$value}
470     done
471 }
472
473 sanitize_var_name(){
474     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
475 }
476
477 set_safe(){
478     var=$1
479     shift
480     eval $(sanitize_var_name "$var")='$*'
481 }
482
483 get_safe(){
484     eval echo \$$(sanitize_var_name "$1")
485 }
486
487 pushvar(){
488     for pvar in $*; do
489         eval level=\${${pvar}_level:=0}
490         eval ${pvar}_${level}="\$$pvar"
491         eval ${pvar}_level=$(($level+1))
492     done
493 }
494
495 popvar(){
496     for pvar in $*; do
497         eval level=\${${pvar}_level:-0}
498         test $level = 0 && continue
499         eval level=$(($level-1))
500         eval $pvar="\${${pvar}_${level}}"
501         eval ${pvar}_level=$level
502         eval unset ${pvar}_${level}
503     done
504 }
505
506 enable(){
507     set_all yes $*
508 }
509
510 disable(){
511     set_all no $*
512 }
513
514 enable_weak(){
515     set_weak yes $*
516 }
517
518 disable_weak(){
519     set_weak no $*
520 }
521
522 enable_safe(){
523     for var; do
524         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
525     done
526 }
527
528 disable_safe(){
529     for var; do
530         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
531     done
532 }
533
534 do_enable_deep(){
535     for var; do
536         enabled $var && continue
537         eval sel="\$${var}_select"
538         eval sgs="\$${var}_suggest"
539         pushvar var sgs
540         enable_deep $sel
541         popvar sgs
542         enable_deep_weak $sgs
543         popvar var
544     done
545 }
546
547 enable_deep(){
548     do_enable_deep $*
549     enable $*
550 }
551
552 enable_deep_weak(){
553     for var; do
554         disabled $var && continue
555         pushvar var
556         do_enable_deep $var
557         popvar var
558         enable_weak $var
559     done
560 }
561
562 enabled(){
563     test "${1#!}" = "$1" && op== || op=!=
564     eval test "x\$${1#!}" $op "xyes"
565 }
566
567 disabled(){
568     test "${1#!}" = "$1" && op== || op=!=
569     eval test "x\$${1#!}" $op "xno"
570 }
571
572 enabled_all(){
573     for opt; do
574         enabled $opt || return 1
575     done
576 }
577
578 disabled_all(){
579     for opt; do
580         disabled $opt || return 1
581     done
582 }
583
584 enabled_any(){
585     for opt; do
586         enabled $opt && return 0
587     done
588 }
589
590 disabled_any(){
591     for opt; do
592         disabled $opt && return 0
593     done
594     return 1
595 }
596
597 set_default(){
598     for opt; do
599         eval : \${$opt:=\$${opt}_default}
600     done
601 }
602
603 is_in(){
604     value=$1
605     shift
606     for var in $*; do
607         [ $var = $value ] && return 0
608     done
609     return 1
610 }
611
612 do_check_deps(){
613     for cfg; do
614         cfg="${cfg#!}"
615         enabled ${cfg}_checking && die "Circular dependency for $cfg."
616         disabled ${cfg}_checking && continue
617         enable ${cfg}_checking
618         append allopts $cfg
619
620         eval dep_all="\$${cfg}_deps"
621         eval dep_any="\$${cfg}_deps_any"
622         eval dep_sel="\$${cfg}_select"
623         eval dep_sgs="\$${cfg}_suggest"
624         eval dep_ifa="\$${cfg}_if"
625         eval dep_ifn="\$${cfg}_if_any"
626
627         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
629         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
630
631         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
632         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
633         enabled_all  $dep_all || disable $cfg
634         enabled_any  $dep_any || disable $cfg
635         disabled_any $dep_sel && disable $cfg
636
637         if enabled $cfg; then
638             enable_deep $dep_sel
639             enable_deep_weak $dep_sgs
640         fi
641
642         disable ${cfg}_checking
643     done
644 }
645
646 check_deps(){
647     unset allopts
648
649     do_check_deps "$@"
650
651     for cfg in $allopts; do
652         enabled $cfg || continue
653         eval dep_extralibs="\$${cfg}_extralibs"
654         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
655     done
656 }
657
658 print_config(){
659     pfx=$1
660     files=$2
661     shift 2
662     map 'eval echo "$v \${$v:-no}"' "$@" |
663     awk "BEGIN { split(\"$files\", files) }
664         {
665             c = \"$pfx\" toupper(\$1);
666             v = \$2;
667             sub(/yes/, 1, v);
668             sub(/no/,  0, v);
669             for (f in files) {
670                 file = files[f];
671                 if (file ~ /\\.h\$/) {
672                     printf(\"#define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.asm\$/) {
674                     printf(\"%%define %s %d\\n\", c, v) >>file;
675                 } else if (file ~ /\\.mak\$/) {
676                     n = -v ? \"\" : \"!\";
677                     printf(\"%s%s=yes\\n\", n, c) >>file;
678                 } else if (file ~ /\\.texi\$/) {
679                     pre = -v ? \"\" : \"@c \";
680                     yesno = \$2;
681                     c2 = tolower(c);
682                     gsub(/_/, \"-\", c2);
683                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
684                 }
685             }
686         }"
687 }
688
689 print_enabled(){
690     suf=$1
691     shift
692     for v; do
693         enabled $v && printf "%s\n" ${v%$suf};
694     done
695 }
696
697 append(){
698     var=$1
699     shift
700     eval "$var=\"\$$var $*\""
701 }
702
703 prepend(){
704     var=$1
705     shift
706     eval "$var=\"$* \$$var\""
707 }
708
709 add_cppflags(){
710     append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714     append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_cxxflags(){
718     append CXXFLAGS $($cflags_filter "$@")
719 }
720
721 add_asflags(){
722     append ASFLAGS $($asflags_filter "$@")
723 }
724
725 add_ldflags(){
726     append LDFLAGS $($ldflags_filter "$@")
727 }
728
729 add_extralibs(){
730     prepend extralibs $($ldflags_filter "$@")
731 }
732
733 add_host_cppflags(){
734     append host_cppflags "$@"
735 }
736
737 add_host_cflags(){
738     append host_cflags $($host_cflags_filter "$@")
739 }
740
741 add_host_ldflags(){
742     append host_ldflags $($host_ldflags_filter "$@")
743 }
744
745 add_compat(){
746     append compat_objs $1
747     shift
748     map 'add_cppflags -D$v' "$@"
749 }
750
751 check_cmd(){
752     log "$@"
753     "$@" >> $logfile 2>&1
754 }
755
756 cc_o(){
757     eval printf '%s\\n' $CC_O
758 }
759
760 cc_e(){
761     eval printf '%s\\n' $CC_E
762 }
763
764 check_cc(){
765     log check_cc "$@"
766     cat > $TMPC
767     log_file $TMPC
768     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
769 }
770
771 check_cxx(){
772     log check_cxx "$@"
773     cat > $TMPCPP
774     log_file $TMPCPP
775     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
776 }
777
778 check_cpp(){
779     log check_cpp "$@"
780     cat > $TMPC
781     log_file $TMPC
782     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
783 }
784
785 as_o(){
786     eval printf '%s\\n' $AS_O
787 }
788
789 check_as(){
790     log check_as "$@"
791     cat > $TMPS
792     log_file $TMPS
793     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
794 }
795
796 check_inline_asm(){
797     log check_inline_asm "$@"
798     name="$1"
799     code="$2"
800     shift 2
801     disable $name
802     check_cc "$@" <<EOF && enable $name
803 void foo(void){ __asm__ volatile($code); }
804 EOF
805 }
806
807 check_insn(){
808     log check_insn "$@"
809     check_inline_asm ${1}_inline "\"$2\""
810     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
811 }
812
813 check_yasm(){
814     log check_yasm "$@"
815     echo "$1" > $TMPS
816     log_file $TMPS
817     shift 1
818     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
819 }
820
821 ld_o(){
822     eval printf '%s\\n' $LD_O
823 }
824
825 check_ld(){
826     log check_ld "$@"
827     type=$1
828     shift 1
829     flags=$(filter_out '-l*|*.so' $@)
830     libs=$(filter '-l*|*.so' $@)
831     check_$type $($cflags_filter $flags) || return
832     flags=$($ldflags_filter $flags)
833     libs=$($ldflags_filter $libs)
834     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
835 }
836
837 check_code(){
838     log check_code "$@"
839     check=$1
840     headers=$2
841     code=$3
842     shift 3
843     {
844         for hdr in $headers; do
845             echo "#include <$hdr>"
846         done
847         echo "int main(void) { $code; return 0; }"
848     } | check_$check "$@"
849 }
850
851 check_cppflags(){
852     log check_cppflags "$@"
853     check_cc "$@" <<EOF && append CPPFLAGS "$@"
854 int x;
855 EOF
856 }
857
858 check_cflags(){
859     log check_cflags "$@"
860     set -- $($cflags_filter "$@")
861     check_cc "$@" <<EOF && append CFLAGS "$@"
862 int x;
863 EOF
864 }
865
866 check_cxxflags(){
867     log check_cxxflags "$@"
868     set -- $($cflags_filter "$@")
869     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
870 int x;
871 EOF
872 }
873
874 test_ldflags(){
875     log test_ldflags "$@"
876     check_ld "cc" "$@" <<EOF
877 int main(void){ return 0; }
878 EOF
879 }
880
881 check_ldflags(){
882     log check_ldflags "$@"
883     test_ldflags "$@" && add_ldflags "$@"
884 }
885
886 check_header(){
887     log check_header "$@"
888     header=$1
889     shift
890     disable_safe $header
891     check_cpp "$@" <<EOF && enable_safe $header
892 #include <$header>
893 int x;
894 EOF
895 }
896
897 check_func(){
898     log check_func "$@"
899     func=$1
900     shift
901     disable $func
902     check_ld "cc" "$@" <<EOF && enable $func
903 extern int $func();
904 int main(void){ $func(); }
905 EOF
906 }
907
908 check_mathfunc(){
909     log check_mathfunc "$@"
910     func=$1
911     narg=$2
912     shift 2
913     test $narg = 2 && args="f, g" || args="f"
914     disable $func
915     check_ld "cc" "$@" <<EOF && enable $func
916 #include <math.h>
917 float foo(float f, float g) { return $func($args); }
918 int main(void){ return (int) foo; }
919 EOF
920 }
921
922 check_func_headers(){
923     log check_func_headers "$@"
924     headers=$1
925     funcs=$2
926     shift 2
927     {
928         for hdr in $headers; do
929             echo "#include <$hdr>"
930         done
931         for func in $funcs; do
932             echo "long check_$func(void) { return (long) $func; }"
933         done
934         echo "int main(void) { return 0; }"
935     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
936 }
937
938 check_class_headers_cpp(){
939     log check_class_headers_cpp "$@"
940     headers=$1
941     classes=$2
942     shift 2
943     {
944         for hdr in $headers; do
945             echo "#include <$hdr>"
946         done
947         echo "int main(void) { "
948         i=1
949         for class in $classes; do
950             echo "$class obj$i;"
951             i=$(expr $i + 1)
952         done
953         echo "return 0; }"
954     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
955 }
956
957 check_cpp_condition(){
958     log check_cpp_condition "$@"
959     header=$1
960     condition=$2
961     shift 2
962     check_cpp "$@" <<EOF
963 #include <$header>
964 #if !($condition)
965 #error "unsatisfied condition: $condition"
966 #endif
967 EOF
968 }
969
970 check_lib(){
971     log check_lib "$@"
972     header="$1"
973     func="$2"
974     shift 2
975     check_header $header && check_func $func "$@" && add_extralibs "$@"
976 }
977
978 check_lib2(){
979     log check_lib2 "$@"
980     headers="$1"
981     funcs="$2"
982     shift 2
983     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
984 }
985
986 check_lib_cpp(){
987     log check_lib_cpp "$@"
988     headers="$1"
989     classes="$2"
990     shift 2
991     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
992 }
993
994 check_pkg_config(){
995     log check_pkg_config "$@"
996     pkg="$1"
997     headers="$2"
998     funcs="$3"
999     shift 3
1000     check_cmd $pkg_config --exists --print-errors $pkg || return
1001     pkg_cflags=$($pkg_config --cflags $pkg)
1002     pkg_libs=$($pkg_config --libs $pkg)
1003     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1004         set_safe ${pkg}_cflags $pkg_cflags   &&
1005         set_safe ${pkg}_libs   $pkg_libs
1006 }
1007
1008 check_exec(){
1009     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1010 }
1011
1012 check_exec_crash(){
1013     code=$(cat)
1014
1015     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1016     # are safe but may not be available everywhere.  Thus we use
1017     # raise(SIGTERM) instead.  The check is run in a subshell so we
1018     # can redirect the "Terminated" message from the shell.  SIGBUS
1019     # is not defined by standard C so it is used conditionally.
1020
1021     (check_exec "$@") >> $logfile 2>&1 <<EOF
1022 #include <signal.h>
1023 static void sighandler(int sig){
1024     raise(SIGTERM);
1025 }
1026 int foo(void){
1027     $code
1028 }
1029 int (*func_ptr)(void) = foo;
1030 int main(void){
1031     signal(SIGILL, sighandler);
1032     signal(SIGFPE, sighandler);
1033     signal(SIGSEGV, sighandler);
1034 #ifdef SIGBUS
1035     signal(SIGBUS, sighandler);
1036 #endif
1037     return func_ptr();
1038 }
1039 EOF
1040 }
1041
1042 check_type(){
1043     log check_type "$@"
1044     headers=$1
1045     type=$2
1046     shift 2
1047     disable_safe "$type"
1048     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1049 }
1050
1051 check_struct(){
1052     log check_struct "$@"
1053     headers=$1
1054     struct=$2
1055     member=$3
1056     shift 3
1057     disable_safe "${struct}_${member}"
1058     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1059         enable_safe "${struct}_${member}"
1060 }
1061
1062 check_builtin(){
1063     log check_builtin "$@"
1064     name=$1
1065     headers=$2
1066     builtin=$3
1067     shift 3
1068     disable "$name"
1069     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1070 }
1071
1072 require(){
1073     name="$1"
1074     header="$2"
1075     func="$3"
1076     shift 3
1077     check_lib $header $func "$@" || die "ERROR: $name not found"
1078 }
1079
1080 require2(){
1081     name="$1"
1082     headers="$2"
1083     func="$3"
1084     shift 3
1085     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1086 }
1087
1088 require_cpp(){
1089     name="$1"
1090     headers="$2"
1091     classes="$3"
1092     shift 3
1093     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1094 }
1095
1096 require_pkg_config(){
1097     pkg="$1"
1098     check_pkg_config "$@" || die "ERROR: $pkg not found"
1099     add_cflags    $(get_safe ${pkg}_cflags)
1100     add_extralibs $(get_safe ${pkg}_libs)
1101 }
1102
1103 hostcc_o(){
1104     eval printf '%s\\n' $HOSTCC_O
1105 }
1106
1107 check_host_cc(){
1108     log check_host_cc "$@"
1109     cat > $TMPC
1110     log_file $TMPC
1111     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1112 }
1113
1114 check_host_cppflags(){
1115     log check_host_cppflags "$@"
1116     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1117 int x;
1118 EOF
1119 }
1120
1121 check_host_cflags(){
1122     log check_host_cflags "$@"
1123     set -- $($host_cflags_filter "$@")
1124     check_host_cc "$@" <<EOF && append host_cflags "$@"
1125 int x;
1126 EOF
1127 }
1128
1129 apply(){
1130     file=$1
1131     shift
1132     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1133 }
1134
1135 cp_if_changed(){
1136     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1137     mkdir -p "$(dirname $2)"
1138     $cp_f "$1" "$2"
1139 }
1140
1141 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1142 # system-dependent things.
1143
1144 COMPONENT_LIST="
1145     bsfs
1146     decoders
1147     demuxers
1148     encoders
1149     filters
1150     hwaccels
1151     indevs
1152     muxers
1153     outdevs
1154     parsers
1155     protocols
1156 "
1157
1158 EXTERNAL_LIBRARY_LIST="
1159     avisynth
1160     bzlib
1161     crystalhd
1162     fontconfig
1163     frei0r
1164     gnutls
1165     iconv
1166     ladspa
1167     libaacplus
1168     libass
1169     libbluray
1170     libcaca
1171     libcdio
1172     libcelt
1173     libdc1394
1174     libfaac
1175     libfdk_aac
1176     libflite
1177     libfreetype
1178     libgme
1179     libgsm
1180     libiec61883
1181     libilbc
1182     libmodplug
1183     libmp3lame
1184     libnut
1185     libopencore_amrnb
1186     libopencore_amrwb
1187     libopencv
1188     libopenjpeg
1189     libopus
1190     libpulse
1191     libquvi
1192     librtmp
1193     libschroedinger
1194     libshine
1195     libsoxr
1196     libspeex
1197     libssh
1198     libstagefright_h264
1199     libtheora
1200     libtwolame
1201     libutvideo
1202     libv4l2
1203     libvidstab
1204     libvo_aacenc
1205     libvo_amrwbenc
1206     libvorbis
1207     libvpx
1208     libwavpack
1209     libx264
1210     libxavs
1211     libxvid
1212     libzmq
1213     libzvbi
1214     openal
1215     opencl
1216     openssl
1217     x11grab
1218     zlib
1219 "
1220
1221 DOCUMENT_LIST="
1222     doc
1223     htmlpages
1224     manpages
1225     podpages
1226     txtpages
1227 "
1228
1229 HWACCEL_LIST="
1230     dxva2
1231     vaapi
1232     vda
1233     vdpau
1234 "
1235
1236 LIBRARY_LIST="
1237     avcodec
1238     avdevice
1239     avfilter
1240     avformat
1241     avresample
1242     avutil
1243     postproc
1244     swresample
1245     swscale
1246 "
1247
1248 PROGRAM_LIST="
1249     ffplay
1250     ffprobe
1251     ffserver
1252     ffmpeg
1253 "
1254
1255 CONFIG_LIST="
1256     $COMPONENT_LIST
1257     $DOCUMENT_LIST
1258     $EXTERNAL_LIBRARY_LIST
1259     $HWACCEL_LIST
1260     $LIBRARY_LIST
1261     $PROGRAM_LIST
1262     dct
1263     dwt
1264     error_resilience
1265     fast_unaligned
1266     fft
1267     ftrapv
1268     gpl
1269     gray
1270     hardcoded_tables
1271     incompatible_libav_abi
1272     incompatible_fork_abi
1273     lsp
1274     lzo
1275     mdct
1276     memalign_hack
1277     memory_poisoning
1278     network
1279     nonfree
1280     pic
1281     rdft
1282     runtime_cpudetect
1283     safe_bitstream_reader
1284     shared
1285     small
1286     sram
1287     static
1288     swscale_alpha
1289     thumb
1290     version3
1291     xmm_clobber_test
1292 "
1293
1294 THREADS_LIST='
1295     pthreads
1296     w32threads
1297     os2threads
1298 '
1299
1300 ATOMICS_LIST='
1301     atomics_gcc
1302     atomics_suncc
1303     atomics_win32
1304 '
1305
1306 ARCH_LIST='
1307     aarch64
1308     alpha
1309     arm
1310     avr32
1311     avr32_ap
1312     avr32_uc
1313     bfin
1314     ia64
1315     m68k
1316     mips
1317     mips64
1318     parisc
1319     ppc
1320     ppc64
1321     s390
1322     sh4
1323     sparc
1324     sparc64
1325     tilegx
1326     tilepro
1327     tomi
1328     x86
1329     x86_32
1330     x86_64
1331 '
1332
1333 ARCH_EXT_LIST_ARM='
1334     armv5te
1335     armv6
1336     armv6t2
1337     neon
1338     vfp
1339     vfpv3
1340 '
1341
1342 ARCH_EXT_LIST_X86='
1343     amd3dnow
1344     amd3dnowext
1345     avx
1346     fma4
1347     i686
1348     mmx
1349     mmxext
1350     sse
1351     sse2
1352     sse3
1353     sse4
1354     sse42
1355     ssse3
1356 '
1357
1358 ARCH_EXT_LIST="
1359     $ARCH_EXT_LIST_ARM
1360     $ARCH_EXT_LIST_X86
1361     altivec
1362     ppc4xx
1363     vis
1364     mipsfpu
1365     mips32r2
1366     mipsdspr1
1367     mipsdspr2
1368 "
1369
1370 HAVE_LIST_CMDLINE='
1371     inline_asm
1372     symver
1373     yasm
1374 '
1375
1376 HAVE_LIST_PUB='
1377     bigendian
1378     fast_unaligned
1379     incompatible_libav_abi
1380     incompatible_fork_abi
1381 '
1382
1383 MATH_FUNCS="
1384     atanf
1385     atan2f
1386     cbrt
1387     cbrtf
1388     cosf
1389     exp2
1390     exp2f
1391     expf
1392     isinf
1393     isnan
1394     ldexpf
1395     llrint
1396     llrintf
1397     log2
1398     log2f
1399     log10f
1400     lrint
1401     lrintf
1402     powf
1403     rint
1404     round
1405     roundf
1406     sinf
1407     trunc
1408     truncf
1409 "
1410
1411 HAVE_LIST="
1412     $ARCH_EXT_LIST
1413     $(add_suffix _external $ARCH_EXT_LIST)
1414     $(add_suffix _inline   $ARCH_EXT_LIST)
1415     $HAVE_LIST_CMDLINE
1416     $HAVE_LIST_PUB
1417     $THREADS_LIST
1418     $ATOMICS_LIST
1419     $MATH_FUNCS
1420     access
1421     aligned_malloc
1422     aligned_stack
1423     alsa_asoundlib_h
1424     altivec_h
1425     arpa_inet_h
1426     asm_mod_q
1427     asm_mod_y
1428     asm_types_h
1429     atomic_cas_ptr
1430     atomics_native
1431     attribute_may_alias
1432     attribute_packed
1433     cdio_paranoia_h
1434     cdio_paranoia_paranoia_h
1435     CL_cl_h
1436     clock_gettime
1437     closesocket
1438     CommandLineToArgvW
1439     cpunop
1440     CryptGenRandom
1441     dcbzl
1442     dev_bktr_ioctl_bt848_h
1443     dev_bktr_ioctl_meteor_h
1444     dev_ic_bt8xx_h
1445     dev_video_bktr_ioctl_bt848_h
1446     dev_video_meteor_ioctl_meteor_h
1447     direct_h
1448     dlfcn_h
1449     dlopen
1450     dos_paths
1451     dxva_h
1452     ebp_available
1453     ebx_available
1454     fast_64bit
1455     fast_clz
1456     fast_cmov
1457     fcntl
1458     fork
1459     getaddrinfo
1460     gethrtime
1461     getopt
1462     GetProcessAffinityMask
1463     GetProcessMemoryInfo
1464     GetProcessTimes
1465     GetSystemTimeAsFileTime
1466     getrusage
1467     getservbyport
1468     gettimeofday
1469     glob
1470     gnu_as
1471     gsm_h
1472     ibm_asm
1473     inet_aton
1474     io_h
1475     inline_asm_labels
1476     isatty
1477     jack_port_get_latency_range
1478     kbhit
1479     ldbrx
1480     libdc1394_1
1481     libdc1394_2
1482     local_aligned_16
1483     local_aligned_8
1484     localtime_r
1485     loongson
1486     lzo1x_999_compress
1487     machine_ioctl_bt848_h
1488     machine_ioctl_meteor_h
1489     machine_rw_barrier
1490     makeinfo
1491     malloc_h
1492     MapViewOfFile
1493     memalign
1494     MemoryBarrier
1495     mkstemp
1496     mm_empty
1497     mmap
1498     mprotect
1499     msvcrt
1500     nanosleep
1501     openjpeg_1_5_openjpeg_h
1502     PeekNamedPipe
1503     perl
1504     pod2man
1505     poll_h
1506     posix_memalign
1507     pragma_deprecated
1508     pthread_cancel
1509     rdtsc
1510     rsync_contimeout
1511     sarestart
1512     sched_getaffinity
1513     sdl
1514     SetConsoleTextAttribute
1515     setmode
1516     setrlimit
1517     Sleep
1518     sndio_h
1519     socklen_t
1520     soundcard_h
1521     strerror_r
1522     struct_addrinfo
1523     struct_group_source_req
1524     struct_ip_mreq_source
1525     struct_ipv6_mreq
1526     struct_pollfd
1527     struct_rusage_ru_maxrss
1528     struct_sctp_event_subscribe
1529     struct_sockaddr_in6
1530     struct_sockaddr_sa_len
1531     struct_sockaddr_storage
1532     struct_stat_st_mtim_tv_nsec
1533     struct_v4l2_frmivalenum_discrete
1534     symver_asm_label
1535     symver_gnu_asm
1536     sync_val_compare_and_swap
1537     sysconf
1538     sysctl
1539     sys_mman_h
1540     sys_param_h
1541     sys_resource_h
1542     sys_select_h
1543     sys_soundcard_h
1544     sys_time_h
1545     sys_un_h
1546     sys_videoio_h
1547     termios_h
1548     texi2html
1549     threads
1550     unistd_h
1551     usleep
1552     vfp_args
1553     VirtualAlloc
1554     windows_h
1555     winsock2_h
1556     xform_asm
1557     xmm_clobbers
1558 "
1559
1560 # options emitted with CONFIG_ prefix but not available on the command line
1561 CONFIG_EXTRA="
1562     aandcttables
1563     ac3dsp
1564     audio_frame_queue
1565     dsputil
1566     exif
1567     frame_thread_encoder
1568     gcrypt
1569     golomb
1570     gplv3
1571     h264chroma
1572     h264dsp
1573     h264pred
1574     h264qpel
1575     hpeldsp
1576     huffman
1577     lgplv3
1578     lpc
1579     mpegaudio
1580     mpegaudiodsp
1581     mpegvideo
1582     mpegvideoenc
1583     nettle
1584     rangecoder
1585     riffdec
1586     riffenc
1587     rtpdec
1588     rtpenc_chain
1589     sinewin
1590     videodsp
1591     vp3dsp
1592 "
1593
1594 CMDLINE_SELECT="
1595     $ARCH_EXT_LIST
1596     $CONFIG_LIST
1597     $HAVE_LIST_CMDLINE
1598     $THREADS_LIST
1599     asm
1600     cross_compile
1601     debug
1602     extra_warnings
1603     logging
1604     lto
1605     optimizations
1606     stripping
1607 "
1608
1609 PATHS_LIST='
1610     bindir
1611     datadir
1612     docdir
1613     incdir
1614     libdir
1615     mandir
1616     prefix
1617     shlibdir
1618 '
1619
1620 CMDLINE_SET="
1621     $PATHS_LIST
1622     ar
1623     arch
1624     as
1625     assert_level
1626     build_suffix
1627     cc
1628     cpu
1629     cross_prefix
1630     cxx
1631     dep_cc
1632     extra_version
1633     host_cc
1634     host_cflags
1635     host_ld
1636     host_ldflags
1637     host_libs
1638     host_os
1639     install
1640     ld
1641     logfile
1642     malloc_prefix
1643     nm
1644     optflags
1645     pkg_config
1646     progs_suffix
1647     random_seed
1648     samples
1649     strip
1650     sysinclude
1651     sysroot
1652     target_exec
1653     target_os
1654     target_path
1655     target_samples
1656     toolchain
1657     valgrind
1658     yasmexe
1659 "
1660
1661 CMDLINE_APPEND="
1662     extra_cflags
1663     extra_cxxflags
1664     host_cppflags
1665 "
1666
1667 # code dependency declarations
1668
1669 # architecture extensions
1670
1671 armv5te_deps="arm"
1672 armv6_deps="arm"
1673 armv6t2_deps="arm"
1674 neon_deps="arm"
1675 vfp_deps="arm"
1676 vfpv3_deps="vfp"
1677
1678 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1679
1680 mipsfpu_deps="mips"
1681 mips32r2_deps="mips"
1682 mipsdspr1_deps="mips"
1683 mipsdspr2_deps="mips"
1684
1685 altivec_deps="ppc"
1686 ppc4xx_deps="ppc"
1687
1688 vis_deps="sparc"
1689
1690 cpunop_deps="i686"
1691 x86_64_select="i686"
1692 x86_64_suggest="fast_cmov"
1693
1694 amd3dnow_deps="mmx"
1695 amd3dnowext_deps="amd3dnow"
1696 mmx_deps="x86"
1697 mmxext_deps="mmx"
1698 sse_deps="mmxext"
1699 sse2_deps="sse"
1700 sse3_deps="sse2"
1701 ssse3_deps="sse3"
1702 sse4_deps="ssse3"
1703 sse42_deps="sse4"
1704 avx_deps="sse42"
1705 fma4_deps="avx"
1706
1707 mmx_external_deps="yasm"
1708 mmx_inline_deps="inline_asm"
1709 mmx_suggest="mmx_external mmx_inline"
1710
1711 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1712     eval dep=\$${ext}_deps
1713     eval ${ext}_external_deps='"${dep}_external"'
1714     eval ${ext}_inline_deps='"${dep}_inline"'
1715     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1716 done
1717
1718 aligned_stack_if_any="ppc x86"
1719 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1720 fast_clz_if_any="alpha avr32 mips ppc x86"
1721 fast_unaligned_if_any="ppc x86"
1722
1723 inline_asm_deps="!tms470"
1724 need_memalign="altivec neon sse"
1725
1726 symver_if_any="symver_asm_label symver_gnu_asm"
1727
1728 log2_deps="!msvcrt"
1729
1730 # subsystems
1731 dct_select="rdft"
1732 error_resilience_select="dsputil"
1733 frame_thread_encoder_deps="encoders threads"
1734 lpc_select="dsputil"
1735 mdct_select="fft"
1736 rdft_select="fft"
1737 mpegaudio_select="mpegaudiodsp"
1738 mpegaudiodsp_select="dct"
1739 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1740 mpegvideoenc_select="mpegvideo"
1741
1742 # decoders / encoders
1743 aac_decoder_select="mdct sinewin"
1744 aac_encoder_select="audio_frame_queue mdct sinewin"
1745 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1746 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1747 ac3_encoder_select="mdct ac3dsp dsputil"
1748 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1749 aic_decoder_select="dsputil golomb"
1750 alac_encoder_select="lpc"
1751 als_decoder_select="dsputil"
1752 amrnb_decoder_select="lsp"
1753 amrwb_decoder_select="lsp"
1754 amv_decoder_select="dsputil hpeldsp exif"
1755 amv_encoder_select="aandcttables"
1756 ape_decoder_select="dsputil"
1757 asv1_decoder_select="dsputil"
1758 asv1_encoder_select="dsputil"
1759 asv2_decoder_select="dsputil"
1760 asv2_encoder_select="dsputil"
1761 atrac1_decoder_select="mdct sinewin"
1762 atrac3_decoder_select="mdct"
1763 avrn_decoder_select="exif"
1764 bink_decoder_select="dsputil hpeldsp"
1765 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1766 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1767 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1768 cllc_decoder_select="dsputil"
1769 comfortnoise_encoder_select="lpc"
1770 cook_decoder_select="dsputil mdct sinewin"
1771 cscd_decoder_select="lzo"
1772 cscd_decoder_suggest="zlib"
1773 dca_decoder_select="mdct"
1774 dirac_decoder_select="dsputil dwt golomb videodsp"
1775 dnxhd_decoder_select="dsputil"
1776 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1777 dvvideo_decoder_select="dsputil"
1778 dvvideo_encoder_select="dsputil"
1779 dxa_decoder_select="zlib"
1780 eac3_decoder_select="ac3_decoder"
1781 eac3_encoder_select="ac3_encoder"
1782 eamad_decoder_select="aandcttables dsputil mpegvideo"
1783 eatgq_decoder_select="aandcttables"
1784 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1785 exr_decoder_select="zlib"
1786 ffv1_decoder_select="dsputil golomb rangecoder"
1787 ffv1_encoder_select="dsputil rangecoder"
1788 ffvhuff_decoder_select="dsputil"
1789 ffvhuff_encoder_select="dsputil huffman"
1790 flac_decoder_select="golomb"
1791 flac_encoder_select="dsputil golomb lpc"
1792 flashsv_decoder_select="zlib"
1793 flashsv_encoder_select="zlib"
1794 flashsv2_encoder_select="zlib"
1795 flashsv2_decoder_select="zlib"
1796 flv_decoder_select="h263_decoder"
1797 flv_encoder_select="h263_encoder"
1798 fourxm_decoder_select="dsputil"
1799 fraps_decoder_select="dsputil huffman"
1800 g2m_decoder_select="dsputil zlib"
1801 g729_decoder_select="dsputil"
1802 h261_decoder_select="error_resilience mpegvideo"
1803 h261_encoder_select="aandcttables mpegvideoenc"
1804 h263_decoder_select="error_resilience h263_parser mpegvideo"
1805 h263_encoder_select="aandcttables mpegvideoenc"
1806 h263i_decoder_select="h263_decoder"
1807 h263p_encoder_select="h263_encoder"
1808 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1809 h264_decoder_suggest="error_resilience"
1810 huffyuv_decoder_select="dsputil"
1811 huffyuv_encoder_select="dsputil huffman"
1812 iac_decoder_select="dsputil fft mdct sinewin"
1813 imc_decoder_select="dsputil fft mdct sinewin"
1814 indeo3_decoder_select="hpeldsp"
1815 interplay_video_decoder_select="hpeldsp"
1816 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1817 jpegls_encoder_select="golomb"
1818 jv_decoder_select="dsputil"
1819 lagarith_decoder_select="dsputil"
1820 ljpeg_encoder_select="aandcttables mpegvideoenc"
1821 loco_decoder_select="golomb"
1822 mdec_decoder_select="dsputil error_resilience mpegvideo"
1823 metasound_decoder_select="lsp mdct sinewin"
1824 mimic_decoder_select="dsputil hpeldsp"
1825 mjpeg_decoder_select="dsputil hpeldsp exif"
1826 mjpegb_decoder_select="dsputil hpeldsp exif"
1827 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1828 mlp_decoder_select="dsputil mlp_parser"
1829 motionpixels_decoder_select="dsputil"
1830 mp1_decoder_select="mpegaudio"
1831 mp1float_decoder_select="mpegaudio"
1832 mp2_decoder_select="mpegaudio"
1833 mp2float_decoder_select="mpegaudio"
1834 mp3_decoder_select="mpegaudio"
1835 mp3adu_decoder_select="mpegaudio"
1836 mp3adufloat_decoder_select="mpegaudio"
1837 mp3float_decoder_select="mpegaudio"
1838 mp3on4_decoder_select="mpegaudio"
1839 mp3on4float_decoder_select="mpegaudio"
1840 mpc7_decoder_select="dsputil mpegaudiodsp"
1841 mpc8_decoder_select="dsputil mpegaudiodsp"
1842 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1843 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1844 mpeg1video_decoder_select="error_resilience mpegvideo"
1845 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1846 mpeg2video_decoder_select="error_resilience mpegvideo"
1847 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1848 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1849 mpeg4_encoder_select="h263_encoder"
1850 msmpeg4v1_decoder_select="h263_decoder"
1851 msmpeg4v2_decoder_select="h263_decoder"
1852 msmpeg4v2_encoder_select="h263_encoder"
1853 msmpeg4v3_decoder_select="h263_decoder"
1854 msmpeg4v3_encoder_select="h263_encoder"
1855 mss2_decoder_select="error_resilience vc1_decoder"
1856 mxpeg_decoder_select="dsputil hpeldsp exif"
1857 nellymoser_decoder_select="mdct sinewin"
1858 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1859 nuv_decoder_select="dsputil lzo"
1860 png_decoder_select="zlib"
1861 png_encoder_select="dsputil zlib"
1862 prores_decoder_select="dsputil"
1863 prores_encoder_select="dsputil"
1864 qcelp_decoder_select="lsp"
1865 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1866 ra_144_encoder_select="audio_frame_queue lpc"
1867 ralf_decoder_select="golomb"
1868 rtjpeg_decoder_select="dsputil"
1869 rv10_decoder_select="error_resilience h263_decoder"
1870 rv10_encoder_select="h263_encoder"
1871 rv20_decoder_select="error_resilience h263_decoder"
1872 rv20_encoder_select="h263_encoder"
1873 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1874 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1875 shorten_decoder_select="golomb"
1876 sipr_decoder_select="lsp"
1877 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1878 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1879 sonic_decoder_select="golomb"
1880 sonic_encoder_select="golomb"
1881 sonic_ls_encoder_select="golomb"
1882 sp5x_decoder_select="dsputil hpeldsp exif"
1883 svq1_decoder_select="hpeldsp"
1884 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1885 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1886 svq3_decoder_suggest="error_resilience zlib"
1887 tak_decoder_select="dsputil"
1888 theora_decoder_select="vp3_decoder"
1889 tiff_decoder_suggest="zlib"
1890 tiff_encoder_suggest="zlib"
1891 thp_decoder_select="dsputil hpeldsp exif"
1892 truehd_decoder_select="mlp_parser"
1893 truemotion2_decoder_select="dsputil"
1894 truespeech_decoder_select="dsputil"
1895 tscc_decoder_select="zlib"
1896 twinvq_decoder_select="mdct lsp sinewin"
1897 utvideo_decoder_select="dsputil"
1898 utvideo_encoder_select="dsputil huffman"
1899 vble_decoder_select="dsputil"
1900 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1901 vc1image_decoder_select="vc1_decoder"
1902 vorbis_decoder_select="mdct"
1903 vorbis_encoder_select="mdct"
1904 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1905 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1906 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1907 vp6a_decoder_select="vp6_decoder"
1908 vp6f_decoder_select="vp6_decoder"
1909 vp8_decoder_select="h264pred videodsp"
1910 webp_decoder_select="vp8_decoder"
1911 wmapro_decoder_select="mdct sinewin"
1912 wmav1_decoder_select="mdct sinewin"
1913 wmav1_encoder_select="mdct sinewin"
1914 wmav2_decoder_select="mdct sinewin"
1915 wmav2_encoder_select="mdct sinewin"
1916 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1917 wmv1_decoder_select="h263_decoder"
1918 wmv1_encoder_select="h263_encoder"
1919 wmv2_decoder_select="h263_decoder videodsp"
1920 wmv2_encoder_select="h263_encoder"
1921 wmv3_decoder_select="vc1_decoder"
1922 wmv3image_decoder_select="wmv3_decoder"
1923 zerocodec_decoder_select="zlib"
1924 zlib_decoder_select="zlib"
1925 zlib_encoder_select="zlib"
1926 zmbv_decoder_select="zlib"
1927 zmbv_encoder_select="zlib"
1928
1929 # hardware accelerators
1930 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1931 dxva2_deps="dxva2api_h"
1932 vaapi_deps="va_va_h"
1933 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1934 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1935 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1936
1937 h263_vaapi_hwaccel_deps="vaapi"
1938 h263_vaapi_hwaccel_select="h263_decoder"
1939 h263_vdpau_hwaccel_deps="vdpau"
1940 h263_vdpau_hwaccel_select="h263_decoder"
1941 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1942 h264_dxva2_hwaccel_deps="dxva2"
1943 h264_dxva2_hwaccel_select="h264_decoder"
1944 h264_vaapi_hwaccel_deps="vaapi"
1945 h264_vaapi_hwaccel_select="h264_decoder"
1946 h264_vda_decoder_deps="vda"
1947 h264_vda_decoder_select="h264_decoder"
1948 h264_vda_hwaccel_deps="vda"
1949 h264_vda_hwaccel_select="h264_decoder"
1950 h264_vdpau_decoder_deps="vdpau"
1951 h264_vdpau_decoder_select="h264_decoder"
1952 h264_vdpau_hwaccel_deps="vdpau"
1953 h264_vdpau_hwaccel_select="h264_decoder"
1954 mpeg_vdpau_decoder_deps="vdpau"
1955 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1956 mpeg1_vdpau_decoder_deps="vdpau"
1957 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1958 mpeg1_vdpau_hwaccel_deps="vdpau"
1959 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1960 mpeg2_crystalhd_decoder_select="crystalhd"
1961 mpeg2_dxva2_hwaccel_deps="dxva2"
1962 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1963 mpeg2_vaapi_hwaccel_deps="vaapi"
1964 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1965 mpeg2_vdpau_hwaccel_deps="vdpau"
1966 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1967 mpeg4_crystalhd_decoder_select="crystalhd"
1968 mpeg4_vaapi_hwaccel_deps="vaapi"
1969 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1970 mpeg4_vdpau_decoder_deps="vdpau"
1971 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1972 mpeg4_vdpau_hwaccel_deps="vdpau"
1973 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1974 msmpeg4_crystalhd_decoder_select="crystalhd"
1975 vc1_crystalhd_decoder_select="crystalhd"
1976 vc1_dxva2_hwaccel_deps="dxva2"
1977 vc1_dxva2_hwaccel_select="vc1_decoder"
1978 vc1_vaapi_hwaccel_deps="vaapi"
1979 vc1_vaapi_hwaccel_select="vc1_decoder"
1980 vc1_vdpau_decoder_deps="vdpau"
1981 vc1_vdpau_decoder_select="vc1_decoder"
1982 vc1_vdpau_hwaccel_deps="vdpau"
1983 vc1_vdpau_hwaccel_select="vc1_decoder"
1984 wmv3_crystalhd_decoder_select="crystalhd"
1985 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1986 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1987 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1988 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1989
1990 # parsers
1991 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1992 mpeg4video_parser_select="error_resilience mpegvideo"
1993 mpegvideo_parser_select="error_resilience mpegvideo"
1994 vc1_parser_select="mpegvideo"
1995
1996 # external libraries
1997 libaacplus_encoder_deps="libaacplus"
1998 libcelt_decoder_deps="libcelt"
1999 libfaac_encoder_deps="libfaac"
2000 libfaac_encoder_select="audio_frame_queue"
2001 libfdk_aac_decoder_deps="libfdk_aac"
2002 libfdk_aac_encoder_deps="libfdk_aac"
2003 libfdk_aac_encoder_select="audio_frame_queue"
2004 libgme_demuxer_deps="libgme"
2005 libgsm_decoder_deps="libgsm"
2006 libgsm_encoder_deps="libgsm"
2007 libgsm_ms_decoder_deps="libgsm"
2008 libgsm_ms_encoder_deps="libgsm"
2009 libilbc_decoder_deps="libilbc"
2010 libilbc_encoder_deps="libilbc"
2011 libmodplug_demuxer_deps="libmodplug"
2012 libmp3lame_encoder_deps="libmp3lame"
2013 libmp3lame_encoder_select="audio_frame_queue"
2014 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2015 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2016 libopencore_amrnb_encoder_select="audio_frame_queue"
2017 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2018 libopenjpeg_decoder_deps="libopenjpeg"
2019 libopenjpeg_encoder_deps="libopenjpeg"
2020 libopus_decoder_deps="libopus"
2021 libopus_encoder_deps="libopus"
2022 libopus_encoder_select="audio_frame_queue"
2023 libquvi_demuxer_deps="libquvi"
2024 libschroedinger_decoder_deps="libschroedinger"
2025 libschroedinger_encoder_deps="libschroedinger"
2026 libshine_encoder_deps="libshine"
2027 libshine_encoder_select="audio_frame_queue"
2028 libspeex_decoder_deps="libspeex"
2029 libspeex_encoder_deps="libspeex"
2030 libspeex_encoder_select="audio_frame_queue"
2031 libstagefright_h264_decoder_deps="libstagefright_h264"
2032 libtheora_encoder_deps="libtheora"
2033 libtwolame_encoder_deps="libtwolame"
2034 libvo_aacenc_encoder_deps="libvo_aacenc"
2035 libvo_aacenc_encoder_select="audio_frame_queue"
2036 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2037 libvorbis_decoder_deps="libvorbis"
2038 libvorbis_encoder_deps="libvorbis"
2039 libvorbis_encoder_select="audio_frame_queue"
2040 libvpx_vp8_decoder_deps="libvpx"
2041 libvpx_vp8_encoder_deps="libvpx"
2042 libvpx_vp9_decoder_deps="libvpx"
2043 libvpx_vp9_encoder_deps="libvpx"
2044 libwavpack_encoder_deps="libwavpack"
2045 libx264_encoder_deps="libx264"
2046 libx264rgb_encoder_deps="libx264"
2047 libxavs_encoder_deps="libxavs"
2048 libxvid_encoder_deps="libxvid"
2049 libutvideo_decoder_deps="libutvideo"
2050 libutvideo_encoder_deps="libutvideo"
2051 libzvbi_teletext_decoder_deps="libzvbi"
2052
2053 # demuxers / muxers
2054 ac3_demuxer_select="ac3_parser"
2055 asf_demuxer_select="riffdec"
2056 asf_muxer_select="riffenc"
2057 asf_stream_muxer_select="asf_muxer"
2058 avi_demuxer_select="riffdec"
2059 avi_muxer_select="riffenc"
2060 avisynth_demuxer_deps="avisynth"
2061 avisynth_demuxer_select="riffdec"
2062 caf_demuxer_select="riffdec"
2063 dirac_demuxer_select="dirac_parser"
2064 dts_demuxer_select="dca_parser"
2065 dtshd_demuxer_select="dca_parser"
2066 dxa_demuxer_select="riffdec"
2067 eac3_demuxer_select="ac3_parser"
2068 f4v_muxer_select="mov_muxer"
2069 flac_demuxer_select="flac_parser"
2070 hls_muxer_select="mpegts_muxer"
2071 ipod_muxer_select="mov_muxer"
2072 ismv_muxer_select="mov_muxer"
2073 libnut_demuxer_deps="libnut"
2074 libnut_muxer_deps="libnut"
2075 matroska_audio_muxer_select="matroska_muxer"
2076 matroska_demuxer_select="riffdec"
2077 matroska_demuxer_suggest="bzlib lzo zlib"
2078 matroska_muxer_select="riffenc"
2079 mmf_muxer_select="riffenc"
2080 mov_demuxer_select="riffdec"
2081 mov_demuxer_suggest="zlib"
2082 mov_muxer_select="riffenc rtpenc_chain"
2083 mp3_demuxer_select="mpegaudio_parser"
2084 mp4_muxer_select="mov_muxer"
2085 mpegts_muxer_select="adts_muxer latm_muxer"
2086 mpegtsraw_demuxer_select="mpegts_demuxer"
2087 mxf_d10_muxer_select="mxf_muxer"
2088 nut_muxer_select="riffenc"
2089 nuv_demuxer_select="riffdec"
2090 ogg_demuxer_select="golomb"
2091 psp_muxer_select="mov_muxer"
2092 rtp_demuxer_select="sdp_demuxer"
2093 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2094 rtsp_demuxer_select="http_protocol rtpdec"
2095 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2096 sap_demuxer_select="sdp_demuxer"
2097 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2098 sdp_demuxer_select="rtpdec"
2099 smoothstreaming_muxer_select="ismv_muxer"
2100 spdif_muxer_select="aac_parser"
2101 tak_demuxer_select="tak_parser"
2102 tg2_muxer_select="mov_muxer"
2103 tgp_muxer_select="mov_muxer"
2104 vobsub_demuxer_select="mpegps_demuxer"
2105 w64_demuxer_select="wav_demuxer"
2106 w64_muxer_select="wav_muxer"
2107 wav_demuxer_select="riffdec"
2108 wav_muxer_select="riffenc"
2109 webm_muxer_select="riffenc"
2110 wtv_demuxer_select="riffdec"
2111 xmv_demuxer_select="riffdec"
2112 xwma_demuxer_select="riffdec"
2113
2114 # indevs / outdevs
2115 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2116 alsa_outdev_deps="alsa_asoundlib_h"
2117 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2118 caca_outdev_deps="libcaca"
2119 dshow_indev_deps="IBaseFilter"
2120 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2121 dv1394_indev_deps="dv1394"
2122 dv1394_indev_select="dv_demuxer"
2123 fbdev_indev_deps="linux_fb_h"
2124 iec61883_indev_deps="libiec61883"
2125 jack_indev_deps="jack_jack_h sem_timedwait"
2126 lavfi_indev_deps="avfilter"
2127 libcdio_indev_deps="libcdio"
2128 libdc1394_indev_deps="libdc1394"
2129 libv4l2_indev_deps="libv4l2"
2130 openal_indev_deps="openal"
2131 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2132 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2133 pulse_indev_deps="libpulse"
2134 sdl_outdev_deps="sdl"
2135 sndio_indev_deps="sndio_h"
2136 sndio_outdev_deps="sndio_h"
2137 v4l_indev_deps="linux_videodev_h"
2138 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2139 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2140 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2141 vfwcap_indev_extralibs="-lavicap32"
2142 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2143 xv_outdev_extralibs="-lXv -lX11 -lXext"
2144 x11grab_indev_deps="x11grab"
2145
2146 # protocols
2147 bluray_protocol_deps="libbluray"
2148 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2149 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2150 ffrtmpcrypt_protocol_select="tcp_protocol"
2151 ffrtmphttp_protocol_deps="!librtmp_protocol"
2152 ffrtmphttp_protocol_select="http_protocol"
2153 ftp_protocol_select="tcp_protocol"
2154 gopher_protocol_select="network"
2155 httpproxy_protocol_select="tcp_protocol"
2156 http_protocol_select="tcp_protocol"
2157 https_protocol_select="tls_protocol"
2158 librtmp_protocol_deps="librtmp"
2159 librtmpe_protocol_deps="librtmp"
2160 librtmps_protocol_deps="librtmp"
2161 librtmpt_protocol_deps="librtmp"
2162 librtmpte_protocol_deps="librtmp"
2163 libssh_protocol_deps="libssh"
2164 mmsh_protocol_select="http_protocol"
2165 mmst_protocol_select="network"
2166 rtmp_protocol_deps="!librtmp_protocol"
2167 rtmp_protocol_select="tcp_protocol"
2168 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2169 rtmps_protocol_deps="!librtmp_protocol"
2170 rtmps_protocol_select="tls_protocol"
2171 rtmpt_protocol_select="ffrtmphttp_protocol"
2172 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2173 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2174 rtp_protocol_select="udp_protocol"
2175 sctp_protocol_deps="struct_sctp_event_subscribe"
2176 sctp_protocol_select="network"
2177 srtp_protocol_select="rtp_protocol"
2178 tcp_protocol_select="network"
2179 tls_protocol_deps_any="openssl gnutls"
2180 tls_protocol_select="tcp_protocol"
2181 udp_protocol_select="network"
2182 unix_protocol_deps="sys_un_h"
2183 unix_protocol_select="network"
2184
2185 # filters
2186 aconvert_filter_deps="swresample"
2187 amovie_filter_deps="avcodec avformat"
2188 aresample_filter_deps="swresample"
2189 ass_filter_deps="libass"
2190 asyncts_filter_deps="avresample"
2191 atempo_filter_deps="avcodec rdft"
2192 azmq_filter_deps="libzmq"
2193 blackframe_filter_deps="gpl"
2194 boxblur_filter_deps="gpl"
2195 colormatrix_filter_deps="gpl"
2196 cropdetect_filter_deps="gpl"
2197 dctdnoiz_filter_deps="avcodec fft"
2198 delogo_filter_deps="gpl"
2199 deshake_filter_deps="avcodec"
2200 deshake_filter_select="dsputil"
2201 drawtext_filter_deps="libfreetype"
2202 ebur128_filter_deps="gpl"
2203 flite_filter_deps="libflite"
2204 frei0r_filter_deps="frei0r dlopen"
2205 frei0r_filter_extralibs='$ldl'
2206 frei0r_src_filter_deps="frei0r dlopen"
2207 frei0r_src_filter_extralibs='$ldl'
2208 geq_filter_deps="gpl"
2209 histeq_filter_deps="gpl"
2210 hqdn3d_filter_deps="gpl"
2211 interlace_filter_deps="gpl"
2212 kerndeint_filter_deps="gpl"
2213 ladspa_filter_deps="ladspa dlopen"
2214 mcdeint_filter_deps="avcodec gpl"
2215 movie_filter_deps="avcodec avformat"
2216 mp_filter_deps="gpl avcodec swscale inline_asm"
2217 mpdecimate_filter_deps="gpl avcodec"
2218 mptestsrc_filter_deps="gpl"
2219 negate_filter_deps="lut_filter"
2220 noise_filter_deps="gpl"
2221 perspective_filter_deps="gpl"
2222 resample_filter_deps="avresample"
2223 ocv_filter_deps="libopencv"
2224 owdenoise_filter_deps="gpl"
2225 pan_filter_deps="swresample"
2226 phase_filter_deps="gpl"
2227 pp_filter_deps="gpl postproc"
2228 pullup_filter_deps="gpl"
2229 removelogo_filter_deps="avcodec avformat swscale"
2230 sab_filter_deps="gpl swscale"
2231 scale_filter_deps="swscale"
2232 smartblur_filter_deps="gpl swscale"
2233 showspectrum_filter_deps="avcodec rdft"
2234 spp_filter_deps="gpl avcodec fft"
2235 stereo3d_filter_deps="gpl"
2236 subtitles_filter_deps="avformat avcodec libass"
2237 super2xsai_filter_deps="gpl"
2238 tinterlace_filter_deps="gpl"
2239 vidstabdetect_filter_deps="libvidstab"
2240 vidstabtransform_filter_deps="libvidstab"
2241 yadif_filter_deps="gpl"
2242 pixfmts_super2xsai_test_deps="super2xsai_filter"
2243 tinterlace_merge_test_deps="tinterlace_filter"
2244 tinterlace_pad_test_deps="tinterlace_filter"
2245 zmq_filter_deps="libzmq"
2246
2247 # libraries
2248 avcodec_deps="avutil"
2249 avdevice_deps="avutil avcodec avformat"
2250 avfilter_deps="avutil"
2251 avformat_deps="avutil avcodec"
2252 avresample_deps="avutil"
2253 postproc_deps="avutil gpl"
2254 swscale_deps="avutil"
2255
2256 # programs
2257 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2258 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2259                null_filter
2260                setpts_filter trim_filter"
2261 ffplay_deps="avcodec avformat swscale swresample sdl"
2262 ffplay_select="rdft crop_filter"
2263 ffprobe_deps="avcodec avformat"
2264 ffserver_deps="avformat fork sarestart"
2265 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2266 ffserver_extralibs='$ldl'
2267
2268 # documentation
2269 podpages_deps="perl"
2270 manpages_deps="perl pod2man"
2271 htmlpages_deps="texi2html"
2272 txtpages_deps="makeinfo"
2273 doc_deps_any="manpages htmlpages podpages txtpages"
2274
2275 # default parameters
2276
2277 logfile="config.log"
2278
2279 # installation paths
2280 prefix_default="/usr/local"
2281 bindir_default='${prefix}/bin'
2282 datadir_default='${prefix}/share/ffmpeg'
2283 docdir_default='${prefix}/share/doc/ffmpeg'
2284 incdir_default='${prefix}/include'
2285 libdir_default='${prefix}/lib'
2286 mandir_default='${prefix}/share/man'
2287 shlibdir_default="$libdir_default"
2288
2289 # toolchain
2290 ar_default="ar"
2291 cc_default="gcc"
2292 cxx_default="g++"
2293 host_cc_default="gcc"
2294 cp_f="cp -f"
2295 install="install"
2296 ln_s="ln -s -f"
2297 nm_default="nm -g"
2298 objformat="elf"
2299 pkg_config_default=pkg-config
2300 ranlib="ranlib"
2301 strip_default="strip"
2302 yasmexe_default="yasm"
2303
2304 nogas=":"
2305
2306 # machine
2307 arch_default=$(uname -m)
2308 cpu="generic"
2309
2310 # OS
2311 target_os_default=$(tolower $(uname -s))
2312 host_os=$target_os_default
2313
2314 # configurable options
2315 enable $PROGRAM_LIST
2316 enable $DOCUMENT_LIST
2317 enable $(filter_out avresample $LIBRARY_LIST)
2318 enable stripping
2319
2320 enable asm
2321 enable debug
2322 enable doc
2323 enable optimizations
2324 enable runtime_cpudetect
2325 enable safe_bitstream_reader
2326 enable static
2327 enable swscale_alpha
2328
2329 # Enable hwaccels by default.
2330 enable dxva2 vaapi vdpau
2331
2332 # build settings
2333 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2334 LIBPREF="lib"
2335 LIBSUF=".a"
2336 FULLNAME='$(NAME)$(BUILDSUF)'
2337 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2338 SLIBPREF="lib"
2339 SLIBSUF=".so"
2340 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2341 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2342 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2343 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2344 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2345 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2346
2347 asflags_filter=echo
2348 cflags_filter=echo
2349 ldflags_filter=echo
2350
2351 AS_C='-c'
2352 AS_O='-o $@'
2353 CC_C='-c'
2354 CC_E='-E -o $@'
2355 CC_O='-o $@'
2356 CXX_C='-c'
2357 CXX_O='-o $@'
2358 LD_O='-o $@'
2359 LD_LIB='-l%'
2360 LD_PATH='-L'
2361 HOSTCC_C='-c'
2362 HOSTCC_O='-o $@'
2363 HOSTLD_O='-o $@'
2364
2365 host_cflags='-O3 -g'
2366 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2367 host_libs='-lm'
2368 host_cflags_filter=echo
2369 host_ldflags_filter=echo
2370
2371 target_path='$(CURDIR)'
2372
2373 # since the object filename is not given with the -MM flag, the compiler
2374 # is only able to print the basename, and we must add the path ourselves
2375 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2376 DEPFLAGS='-MM'
2377
2378 # find source path
2379 if test -f configure; then
2380     source_path=.
2381 else
2382     source_path=$(cd $(dirname "$0"); pwd)
2383     echo "$source_path" | grep -q '[[:blank:]]' &&
2384         die "Out of tree builds are impossible with whitespace in source path."
2385     test -e "$source_path/config.h" &&
2386         die "Out of tree builds are impossible with config.h in source dir."
2387 fi
2388
2389 for v in "$@"; do
2390     r=${v#*=}
2391     l=${v%"$r"}
2392     r=$(sh_quote "$r")
2393     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2394 done
2395
2396 find_things(){
2397     thing=$1
2398     pattern=$2
2399     file=$source_path/$3
2400     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2401 }
2402
2403 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2404 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2405 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2406 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2407 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2408 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2409 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2410 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2411 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2412 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2413 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2414
2415 ALL_COMPONENTS="
2416     $BSF_LIST
2417     $DECODER_LIST
2418     $DEMUXER_LIST
2419     $ENCODER_LIST
2420     $FILTER_LIST
2421     $HWACCEL_LIST
2422     $INDEV_LIST
2423     $MUXER_LIST
2424     $OUTDEV_LIST
2425     $PARSER_LIST
2426     $PROTOCOL_LIST
2427 "
2428
2429 for n in $COMPONENT_LIST; do
2430     v=$(toupper ${n%s})_LIST
2431     eval enable \$$v
2432     eval ${n}_if_any="\$$v"
2433 done
2434
2435 enable $ARCH_EXT_LIST
2436
2437 die_unknown(){
2438     echo "Unknown option \"$1\"."
2439     echo "See $0 --help for available options."
2440     exit 1
2441 }
2442
2443 print_3_columns() {
2444     cat | tr ' ' '\n' | sort | pr -r -3 -t
2445 }
2446
2447 show_list() {
2448     suffix=_$1
2449     shift
2450     echo $* | sed s/$suffix//g | print_3_columns
2451     exit 0
2452 }
2453
2454 rand_list(){
2455     IFS=', '
2456     set -- $*
2457     unset IFS
2458     for thing; do
2459         comp=${thing%:*}
2460         prob=${thing#$comp}
2461         prob=${prob#:}
2462         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2463         echo "prob ${prob:-0.5}"
2464         printf '%s\n' $comp
2465     done
2466 }
2467
2468 do_random(){
2469     action=$1
2470     shift
2471     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2472     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2473 }
2474
2475 for opt do
2476     optval="${opt#*=}"
2477     case "$opt" in
2478         --extra-ldflags=*)
2479             add_ldflags $optval
2480         ;;
2481         --extra-libs=*)
2482             add_extralibs $optval
2483         ;;
2484         --disable-devices)
2485             disable $INDEV_LIST $OUTDEV_LIST
2486         ;;
2487         --enable-debug=*)
2488             debuglevel="$optval"
2489         ;;
2490         --disable-programs)
2491             disable $PROGRAM_LIST
2492         ;;
2493         --disable-everything)
2494             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2495         ;;
2496         --disable-all)
2497             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2498             disable $LIBRARY_LIST $PROGRAM_LIST doc
2499         ;;
2500         --enable-random|--disable-random)
2501             action=${opt%%-random}
2502             do_random ${action#--} $COMPONENT_LIST
2503         ;;
2504         --enable-random=*|--disable-random=*)
2505             action=${opt%%-random=*}
2506             do_random ${action#--} $optval
2507         ;;
2508         --enable-*=*|--disable-*=*)
2509             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2510             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2511             eval list=\$$(toupper $thing)_LIST
2512             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2513             list=$(filter "$name" $list)
2514             [ "$list" = "" ] && warn "Option $opt did not match anything"
2515             $action $list
2516         ;;
2517         --enable-?*|--disable-?*)
2518             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2519             if is_in $option $COMPONENT_LIST; then
2520                 test $action = disable && action=unset
2521                 eval $action \$$(toupper ${option%s})_LIST
2522             elif is_in $option $CMDLINE_SELECT; then
2523                 $action $option
2524             else
2525                 die_unknown $opt
2526             fi
2527         ;;
2528         --list-*)
2529             NAME="${opt#--list-}"
2530             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2531             NAME=${NAME%s}
2532             eval show_list $NAME \$$(toupper $NAME)_LIST
2533         ;;
2534         --help|-h) show_help
2535         ;;
2536         --fatal-warnings) enable fatal_warnings
2537         ;;
2538         *)
2539             optname="${opt%%=*}"
2540             optname="${optname#--}"
2541             optname=$(echo "$optname" | sed 's/-/_/g')
2542             if is_in $optname $CMDLINE_SET; then
2543                 eval $optname='$optval'
2544             elif is_in $optname $CMDLINE_APPEND; then
2545                 append $optname "$optval"
2546             else
2547                 die_unknown $opt
2548             fi
2549         ;;
2550     esac
2551 done
2552
2553 disabled logging && logfile=/dev/null
2554
2555 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2556 set >> $logfile
2557
2558 test -n "$cross_prefix" && enable cross_compile
2559
2560 if enabled cross_compile; then
2561     test -n "$arch" && test -n "$target_os" ||
2562         die "Must specify target arch and OS when cross-compiling"
2563 fi
2564
2565 ar_default="${cross_prefix}${ar_default}"
2566 cc_default="${cross_prefix}${cc_default}"
2567 cxx_default="${cross_prefix}${cxx_default}"
2568 nm_default="${cross_prefix}${nm_default}"
2569 pkg_config_default="${cross_prefix}${pkg_config_default}"
2570 ranlib="${cross_prefix}${ranlib}"
2571 strip_default="${cross_prefix}${strip_default}"
2572
2573 sysinclude_default="${sysroot}/usr/include"
2574
2575 test -n "$valgrind" && toolchain="valgrind-memcheck"
2576
2577 case "$toolchain" in
2578     clang-asan)
2579         cc_default="clang"
2580         add_cflags  -fsanitize=address
2581         add_ldflags -fsanitize=address
2582     ;;
2583     clang-tsan)
2584         cc_default="clang"
2585         add_cflags  -fsanitize=thread -pie
2586         add_ldflags -fsanitize=thread -pie
2587     ;;
2588     gcc-asan)
2589         cc_default="gcc"
2590         add_cflags  -fsanitize=address
2591         add_ldflags -fsanitize=address
2592     ;;
2593     gcc-tsan)
2594         cc_default="gcc"
2595         add_cflags  -fsanitize=thread -pie -fPIC
2596         add_ldflags -fsanitize=thread -pie -fPIC
2597     ;;
2598     valgrind-massif)
2599         target_exec_default=${valgrind:-"valgrind"}
2600         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"
2601     ;;
2602     valgrind-memcheck)
2603         target_exec_default=${valgrind:-"valgrind"}
2604         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2605     ;;
2606     msvc)
2607         cc_default="c99wrap cl"
2608         ld_default="c99wrap link"
2609         nm_default="dumpbin -symbols"
2610         ar_default="lib"
2611         target_os_default="win32"
2612     ;;
2613     icl)
2614         cc_default="c99wrap -noconv icl"
2615         ld_default="c99wrap xilink"
2616         nm_default="dumpbin -symbols"
2617         ar_default="xilib"
2618         target_os_default="win32"
2619     ;;
2620     gcov)
2621         add_cflags  -fprofile-arcs -ftest-coverage
2622         add_ldflags -fprofile-arcs -ftest-coverage
2623     ;;
2624     ?*)
2625         die "Unknown toolchain $toolchain"
2626     ;;
2627 esac
2628
2629 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2630 enabled cross_compile || host_cc_default=$cc
2631 set_default host_cc
2632
2633 if ! $pkg_config --version >/dev/null 2>&1; then
2634     warn "$pkg_config not found, library detection may fail."
2635     pkg_config=false
2636 fi
2637
2638 exesuf() {
2639     case $1 in
2640         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2641     esac
2642 }
2643
2644 EXESUF=$(exesuf $target_os)
2645 HOSTEXESUF=$(exesuf $host_os)
2646
2647 # set temporary file name
2648 : ${TMPDIR:=$TEMPDIR}
2649 : ${TMPDIR:=$TMP}
2650 : ${TMPDIR:=/tmp}
2651
2652 if ! check_cmd mktemp -u XXXXXX; then
2653     # simple replacement for missing mktemp
2654     # NOT SAFE FOR GENERAL USE
2655     mktemp(){
2656         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2657     }
2658 fi
2659
2660 tmpfile(){
2661     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2662         (set -C; exec > $tmp) 2>/dev/null ||
2663         die "Unable to create temporary file in $TMPDIR."
2664     append TMPFILES $tmp
2665     eval $1=$tmp
2666 }
2667
2668 trap 'rm -f -- $TMPFILES' EXIT
2669
2670 tmpfile TMPASM .asm
2671 tmpfile TMPC   .c
2672 tmpfile TMPCPP .cpp
2673 tmpfile TMPE   $EXESUF
2674 tmpfile TMPH   .h
2675 tmpfile TMPO   .o
2676 tmpfile TMPS   .S
2677 tmpfile TMPSH  .sh
2678 tmpfile TMPV   .ver
2679
2680 unset -f mktemp
2681
2682 chmod +x $TMPE
2683
2684 # make sure we can execute files in $TMPDIR
2685 cat > $TMPSH 2>> $logfile <<EOF
2686 #! /bin/sh
2687 EOF
2688 chmod +x $TMPSH >> $logfile 2>&1
2689 if ! $TMPSH >> $logfile 2>&1; then
2690     cat <<EOF
2691 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2692 variable to another directory and make sure that it is not mounted noexec.
2693 EOF
2694     die "Sanity test failed."
2695 fi
2696
2697 ccc_flags(){
2698     for flag; do
2699         case $flag in
2700             -std=c99)           echo -c99                       ;;
2701             -mcpu=*)            echo -arch ${flag#*=}           ;;
2702             -mieee)             echo -ieee                      ;;
2703             -O*|-fast)          echo $flag                      ;;
2704             -fno-math-errno)    echo -assume nomath_errno       ;;
2705             -g)                 echo -g3                        ;;
2706             -Wall)              echo -msg_enable level2         ;;
2707             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2708             -Wl,*)              echo $flag                      ;;
2709             -f*|-W*)                                            ;;
2710             *)                  echo $flag                      ;;
2711         esac
2712    done
2713 }
2714
2715 cparser_flags(){
2716     for flag; do
2717         case $flag in
2718             -Wno-switch)             echo -Wno-switch-enum ;;
2719             -Wno-format-zero-length) ;;
2720             -Wdisabled-optimization) ;;
2721             -Wno-pointer-sign)       echo -Wno-other ;;
2722             *)                       echo $flag ;;
2723         esac
2724     done
2725 }
2726
2727 msvc_common_flags(){
2728     for flag; do
2729         case $flag in
2730             # In addition to specifying certain flags under the compiler
2731             # specific filters, they must be specified here as well or else the
2732             # generic catch all at the bottom will print the original flag.
2733             -Wall)                ;;
2734             -std=c99)             ;;
2735             # Common flags
2736             -fomit-frame-pointer) ;;
2737             -g)                   echo -Z7 ;;
2738             -fno-math-errno)      ;;
2739             -fno-common)          ;;
2740             -fno-signed-zeros)    ;;
2741             -fPIC)                ;;
2742             -mthumb)              ;;
2743             -march=*)             ;;
2744             -lz)                  echo zlib.lib ;;
2745             -lavifil32)           echo vfw32.lib ;;
2746             -lavicap32)           echo vfw32.lib user32.lib ;;
2747             -l*)                  echo ${flag#-l}.lib ;;
2748             *)                    echo $flag ;;
2749         esac
2750     done
2751 }
2752
2753 msvc_flags(){
2754     msvc_common_flags "$@"
2755     for flag; do
2756         case $flag in
2757             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2758                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2759                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2760                                        -wd4554 \
2761                                        -wd4273 ;;
2762         esac
2763     done
2764 }
2765
2766 icl_flags(){
2767     msvc_common_flags "$@"
2768     for flag; do
2769         case $flag in
2770             # Despite what Intel's documentation says -Wall, which is supported
2771             # on Windows, does enable remarks so disable them here.
2772             -Wall)                echo $flag -Qdiag-disable:remark ;;
2773             -std=c99)             echo -Qstd=c99 ;;
2774         esac
2775     done
2776 }
2777
2778 pgi_flags(){
2779     for flag; do
2780         case $flag in
2781             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2782             -fomit-frame-pointer) echo -Mnoframe ;;
2783             -g)                   echo -gopt ;;
2784             *)                    echo $flag ;;
2785         esac
2786     done
2787 }
2788
2789 suncc_flags(){
2790     for flag; do
2791         case $flag in
2792             -march=*|-mcpu=*)
2793                 case "${flag#*=}" in
2794                     native)                   echo -xtarget=native       ;;
2795                     v9|niagara)               echo -xarch=sparc          ;;
2796                     ultrasparc)               echo -xarch=sparcvis       ;;
2797                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2798                     i586|pentium)             echo -xchip=pentium        ;;
2799                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2800                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2801                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2802                     pentium4*)          echo -xtarget=pentium4           ;;
2803                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2804                     *-sse3)             echo -xarch=sse3                 ;;
2805                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2806                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2807                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2808                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2809                     bdver*)                    echo -xarch=avx           ;;
2810                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2811                     k8|opteron|athlon64|athlon-fx)
2812                                                echo -xarch=sse2a         ;;
2813                     athlon*)                   echo -xarch=pentium_proa  ;;
2814                 esac
2815                 ;;
2816             -std=c99)             echo -xc99              ;;
2817             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2818             -fPIC)                echo -KPIC -xcode=pic32 ;;
2819             -W*,*)                echo $flag              ;;
2820             -f*-*|-W*|-mimpure-text)                      ;;
2821             -shared)              echo -G                 ;;
2822             *)                    echo $flag              ;;
2823         esac
2824     done
2825 }
2826
2827 tms470_flags(){
2828     for flag; do
2829         case $flag in
2830             -march=*|-mcpu=*)
2831                 case "${flag#*=}" in
2832                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2833                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2834                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2835                     armv6*|arm11*)          echo -mv=6   ;;
2836                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2837                                             echo -mv=5e  ;;
2838                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2839                 esac
2840                 ;;
2841             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2842             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2843             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2844             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2845             -msoft-float)   echo --float_support=vfplib       ;;
2846             -O[0-3]|-mf=*)  echo $flag                        ;;
2847             -g)             echo -g -mn                       ;;
2848             -pds=*)         echo $flag                        ;;
2849             -D*|-I*)        echo $flag                        ;;
2850             --gcc|--abi=*)  echo $flag                        ;;
2851             -me)            echo $flag                        ;;
2852         esac
2853     done
2854 }
2855
2856 probe_cc(){
2857     pfx=$1
2858     _cc=$2
2859
2860     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2861     unset _ld_o _ldflags _ld_lib _ld_path
2862     unset _depflags _DEPCMD _DEPFLAGS
2863     _flags_filter=echo
2864
2865     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2866         _type=llvm_gcc
2867         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2868         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2869         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2870         _cflags_speed='-O3'
2871         _cflags_size='-Os'
2872     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2873         _type=gcc
2874         gcc_version=$($_cc --version | head -n1)
2875         gcc_basever=$($_cc -dumpversion)
2876         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2877         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2878         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2879         if ! $_cc -dumpversion | grep -q '^2\.'; then
2880             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2881         fi
2882         _cflags_speed='-O3'
2883         _cflags_size='-Os'
2884     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2885         _type=icc
2886         _ident=$($_cc --version | head -n1)
2887         _depflags='-MMD'
2888         _cflags_speed='-O3'
2889         _cflags_size='-Os'
2890         _cflags_noopt='-O1'
2891     elif $_cc -v 2>&1 | grep -q xlc; then
2892         _type=xlc
2893         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2894         _cflags_speed='-O5'
2895         _cflags_size='-O5 -qcompact'
2896     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2897         _type=ccc
2898         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2899         _DEPFLAGS='-M'
2900         _cflags_speed='-fast'
2901         _cflags_size='-O1'
2902         _flags_filter=ccc_flags
2903     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2904         test -d "$sysroot" || die "No valid sysroot specified."
2905         _type=armcc
2906         _ident=$($_cc --vsn | head -n1)
2907         armcc_conf="$PWD/armcc.conf"
2908         $_cc --arm_linux_configure                 \
2909              --arm_linux_config_file="$armcc_conf" \
2910              --configure_sysroot="$sysroot"        \
2911              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2912              die "Error creating armcc configuration file."
2913         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2914         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2915         as_default="${cross_prefix}gcc"
2916         _depflags='-MMD'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2920         _type=tms470
2921         _ident=$($_cc -version | head -n1 | tr -s ' ')
2922         _flags='--gcc --abi=eabi -me'
2923         _cc_e='-ppl -fe=$@'
2924         _cc_o='-fe=$@'
2925         _depflags='-ppa -ppd=$(@:.o=.d)'
2926         _cflags_speed='-O3 -mf=5'
2927         _cflags_size='-O3 -mf=2'
2928         _flags_filter=tms470_flags
2929     elif $_cc -v 2>&1 | grep -q clang; then
2930         _type=clang
2931         _ident=$($_cc --version | head -n1)
2932         _depflags='-MMD'
2933         _cflags_speed='-O3'
2934         _cflags_size='-Os'
2935     elif $_cc -V 2>&1 | grep -q Sun; then
2936         _type=suncc
2937         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2938         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2939         _DEPFLAGS='-xM1 -xc99'
2940         _ldflags='-std=c99'
2941         _cflags_speed='-O5'
2942         _cflags_size='-O5 -xspace'
2943         _flags_filter=suncc_flags
2944     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2945         _type=pathscale
2946         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2947         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2948         _cflags_speed='-O2'
2949         _cflags_size='-Os'
2950         _flags_filter='filter_out -Wdisabled-optimization'
2951     elif $_cc -v 2>&1 | grep -q Open64; then
2952         _type=open64
2953         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2954         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2955         _cflags_speed='-O2'
2956         _cflags_size='-Os'
2957         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2958     elif $_cc -V 2>&1 | grep -q Portland; then
2959         _type=pgi
2960         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2961         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2962         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2963         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2964         _cflags_noopt="-O"
2965         _flags_filter=pgi_flags
2966     elif $_cc 2>&1 | grep -q Microsoft; then
2967         _type=msvc
2968         _ident=$($cc 2>&1 | head -n1)
2969         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2970         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2971         _cflags_speed="-O2"
2972         _cflags_size="-O1"
2973         # Nonstandard output options, to avoid msys path conversion issues.
2974         # Relies on wrapper to remap it.
2975         if $_cc 2>&1 | grep -q Linker; then
2976             _ld_o='-out $@'
2977         else
2978             _ld_o='-Fe$@'
2979         fi
2980         _cc_o='-Fo $@'
2981         _cc_e='-P -Fi $@'
2982         _flags_filter=msvc_flags
2983         _ld_lib='lib%.a'
2984         _ld_path='-libpath:'
2985         _flags='-nologo'
2986         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2987         if [ $pfx = hostcc ]; then
2988             append _cflags -Dsnprintf=_snprintf
2989         fi
2990         disable stripping
2991     elif $_cc 2>&1 | grep -q Intel; then
2992         _type=icl
2993         _ident=$($cc 2>&1 | head -n1)
2994         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2995         # Not only is O3 broken on 13.x+ but it is slower on all previous
2996         # versions (tested) as well.
2997         _cflags_speed="-O2"
2998         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2999         # Nonstandard output options, to avoid msys path conversion issues.
3000         # Relies on wrapper to remap it.
3001         if $_cc 2>&1 | grep -q Linker; then
3002             _ld_o='-out $@'
3003         else
3004             _ld_o='-Fe$@'
3005         fi
3006         _cc_o='-Fo $@'
3007         _cc_e='-P'
3008         _flags_filter=icl_flags
3009         _ld_lib='lib%.a'
3010         _ld_path='-libpath:'
3011         # -Qdiag-error to make icl error when seeing certain unknown arguments
3012         _flags='-nologo -Qdiag-error:4044,10157'
3013         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3014         # with MSVC which enables it by default.
3015         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3016         if [ $pfx = hostcc ]; then
3017             append _cflags -Dsnprintf=_snprintf
3018         fi
3019     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3020         _type=cparser
3021         _ident=$($_cc --version | head -n1)
3022         _depflags='-MMD'
3023         _cflags_speed='-O4'
3024         _cflags_size='-O2'
3025         _flags_filter=cparser_flags
3026     fi
3027
3028     eval ${pfx}_type=\$_type
3029     eval ${pfx}_ident=\$_ident
3030 }
3031
3032 set_ccvars(){
3033     eval ${1}_C=\${_cc_c-\${${1}_C}}
3034     eval ${1}_E=\${_cc_e-\${${1}_E}}
3035     eval ${1}_O=\${_cc_o-\${${1}_O}}
3036
3037     if [ -n "$_depflags" ]; then
3038         eval ${1}_DEPFLAGS=\$_depflags
3039     else
3040         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3041         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3042         eval DEP${1}FLAGS=\$_flags
3043     fi
3044 }
3045
3046 probe_cc cc "$cc"
3047 cflags_filter=$_flags_filter
3048 cflags_speed=$_cflags_speed
3049 cflags_size=$_cflags_size
3050 cflags_noopt=$_cflags_noopt
3051 add_cflags $_flags $_cflags
3052 cc_ldflags=$_ldflags
3053 set_ccvars CC
3054
3055 probe_cc hostcc "$host_cc"
3056 host_cflags_filter=$_flags_filter
3057 add_host_cflags  $_flags $_cflags
3058 set_ccvars HOSTCC
3059
3060 test -n "$cc_type" && enable $cc_type ||
3061     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3062
3063 : ${as_default:=$cc}
3064 : ${dep_cc_default:=$cc}
3065 : ${ld_default:=$cc}
3066 : ${host_ld_default:=$host_cc}
3067 set_default ar as dep_cc ld host_ld
3068
3069 probe_cc as "$as"
3070 asflags_filter=$_flags_filter
3071 add_asflags $_flags $_cflags
3072 set_ccvars AS
3073
3074 probe_cc ld "$ld"
3075 ldflags_filter=$_flags_filter
3076 add_ldflags $_flags $_ldflags
3077 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3078 LD_O=${_ld_o-$LD_O}
3079 LD_LIB=${_ld_lib-$LD_LIB}
3080 LD_PATH=${_ld_path-$LD_PATH}
3081
3082 probe_cc hostld "$host_ld"
3083 host_ldflags_filter=$_flags_filter
3084 add_host_ldflags $_flags $_ldflags
3085 HOSTLD_O=${_ld_o-$HOSTLD_O}
3086
3087 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3088     probe_cc depcc "$dep_cc"
3089     CCDEP=${_DEPCMD:-$DEPCMD}
3090     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3091     DEPCCFLAGS=$_flags
3092 fi
3093
3094 if $ar 2>&1 | grep -q Microsoft; then
3095     arflags="-nologo"
3096     ar_o='-out:$@'
3097 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3098     arflags="rq"
3099     ar_o='$@'
3100 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3101     arflags='-Xany -r -c'
3102     ar_o='$@'
3103 else
3104     arflags="rc"
3105     ar_o='$@'
3106 fi
3107
3108 add_cflags $extra_cflags
3109 add_cxxflags $extra_cxxflags
3110 add_asflags $extra_cflags
3111
3112 if test -n "$sysroot"; then
3113     case "$cc_type" in
3114         gcc|llvm_gcc|clang)
3115             add_cppflags --sysroot="$sysroot"
3116             add_ldflags --sysroot="$sysroot"
3117         ;;
3118         tms470)
3119             add_cppflags -I"$sysinclude"
3120             add_ldflags  --sysroot="$sysroot"
3121         ;;
3122     esac
3123 fi
3124
3125 if test "$cpu" = host; then
3126     enabled cross_compile &&
3127         die "--cpu=host makes no sense when cross-compiling."
3128
3129     case "$cc_type" in
3130         gcc|llvm_gcc)
3131             check_native(){
3132                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3133                 sed -n "/cc1.*$1=/{
3134                             s/.*$1=\\([^ ]*\\).*/\\1/
3135                             p
3136                             q
3137                         }" $TMPE
3138             }
3139             cpu=$(check_native -march || check_native -mcpu)
3140         ;;
3141     esac
3142
3143     test "${cpu:-host}" = host &&
3144         die "--cpu=host not supported with compiler $cc"
3145 fi
3146
3147 # Deal with common $arch aliases
3148 case "$arch" in
3149     aarch64|arm64)
3150         arch="aarch64"
3151     ;;
3152     arm*|iPad*|iPhone*)
3153         arch="arm"
3154     ;;
3155     mips*|IP*)
3156         arch="mips"
3157     ;;
3158     parisc*|hppa*)
3159         arch="parisc"
3160     ;;
3161     "Power Macintosh"|ppc*|powerpc*)
3162         arch="ppc"
3163     ;;
3164     s390|s390x)
3165         arch="s390"
3166     ;;
3167     sh4|sh)
3168         arch="sh4"
3169     ;;
3170     sun4u|sparc*)
3171         arch="sparc"
3172     ;;
3173     tilegx|tile-gx)
3174         arch="tilegx"
3175     ;;
3176     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3177         arch="x86"
3178     ;;
3179 esac
3180
3181 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3182 enable $arch
3183
3184 # Add processor-specific flags
3185 if enabled aarch64; then
3186
3187     case $cpu in
3188         armv*)
3189             cpuflags="-march=$cpu"
3190         ;;
3191         *)
3192             cpuflags="-mcpu=$cpu"
3193         ;;
3194     esac
3195
3196 elif enabled alpha; then
3197
3198     cpuflags="-mcpu=$cpu"
3199
3200 elif enabled arm; then
3201
3202     check_arm_arch() {
3203         check_cpp_condition stddef.h \
3204             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3205             $cpuflags
3206     }
3207
3208     probe_arm_arch() {
3209         if   check_arm_arch 4;        then echo armv4;
3210         elif check_arm_arch 4T;       then echo armv4t;
3211         elif check_arm_arch 5;        then echo armv5;
3212         elif check_arm_arch 5E;       then echo armv5e;
3213         elif check_arm_arch 5T;       then echo armv5t;
3214         elif check_arm_arch 5TE;      then echo armv5te;
3215         elif check_arm_arch 5TEJ;     then echo armv5te;
3216         elif check_arm_arch 6;        then echo armv6;
3217         elif check_arm_arch 6J;       then echo armv6j;
3218         elif check_arm_arch 6K;       then echo armv6k;
3219         elif check_arm_arch 6Z;       then echo armv6z;
3220         elif check_arm_arch 6ZK;      then echo armv6zk;
3221         elif check_arm_arch 6T2;      then echo armv6t2;
3222         elif check_arm_arch 7;        then echo armv7;
3223         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3224         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3225         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3226         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3227         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3228         fi
3229     }
3230
3231     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3232
3233     case $cpu in
3234         armv*)
3235             cpuflags="-march=$cpu"
3236             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3237         ;;
3238         *)
3239             cpuflags="-mcpu=$cpu"
3240             case $cpu in
3241                 cortex-a*)                               subarch=armv7a  ;;
3242                 cortex-r*)                               subarch=armv7r  ;;
3243                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3244                 arm11*)                                  subarch=armv6   ;;
3245                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3246                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3247                 *)                             subarch=$(probe_arm_arch) ;;
3248             esac
3249         ;;
3250     esac
3251
3252     case "$subarch" in
3253         armv5t*)    enable fast_clz                ;;
3254         armv[6-8]*) enable fast_clz fast_unaligned ;;
3255     esac
3256
3257 elif enabled avr32; then
3258
3259     case $cpu in
3260         ap7[02]0[0-2])
3261             subarch="avr32_ap"
3262             cpuflags="-mpart=$cpu"
3263         ;;
3264         ap)
3265             subarch="avr32_ap"
3266             cpuflags="-march=$cpu"
3267         ;;
3268         uc3[ab]*)
3269             subarch="avr32_uc"
3270             cpuflags="-mcpu=$cpu"
3271         ;;
3272         uc)
3273             subarch="avr32_uc"
3274             cpuflags="-march=$cpu"
3275         ;;
3276     esac
3277
3278 elif enabled bfin; then
3279
3280     cpuflags="-mcpu=$cpu"
3281
3282 elif enabled mips; then
3283
3284     cpuflags="-march=$cpu"
3285
3286     case $cpu in
3287         24kc)
3288             disable mipsfpu
3289             disable mipsdspr1
3290             disable mipsdspr2
3291         ;;
3292         24kf*)
3293             disable mipsdspr1
3294             disable mipsdspr2
3295         ;;
3296         24kec|34kc|1004kc)
3297             disable mipsfpu
3298             disable mipsdspr2
3299         ;;
3300         24kef*|34kf*|1004kf*)
3301             disable mipsdspr2
3302         ;;
3303         74kc)
3304             disable mipsfpu
3305         ;;
3306     esac
3307
3308 elif enabled ppc; then
3309
3310     case $(tolower $cpu) in
3311         601|ppc601|powerpc601)
3312             cpuflags="-mcpu=601"
3313             disable altivec
3314         ;;
3315         603*|ppc603*|powerpc603*)
3316             cpuflags="-mcpu=603"
3317             disable altivec
3318         ;;
3319         604*|ppc604*|powerpc604*)
3320             cpuflags="-mcpu=604"
3321             disable altivec
3322         ;;
3323         g3|75*|ppc75*|powerpc75*)
3324             cpuflags="-mcpu=750"
3325             disable altivec
3326         ;;
3327         g4|745*|ppc745*|powerpc745*)
3328             cpuflags="-mcpu=7450"
3329         ;;
3330         74*|ppc74*|powerpc74*)
3331             cpuflags="-mcpu=7400"
3332         ;;
3333         g5|970|ppc970|powerpc970)
3334             cpuflags="-mcpu=970"
3335         ;;
3336         power[3-7]*)
3337             cpuflags="-mcpu=$cpu"
3338         ;;
3339         cell)
3340             cpuflags="-mcpu=cell"
3341             enable ldbrx
3342         ;;
3343         e500mc)
3344             cpuflags="-mcpu=e500mc"
3345             disable altivec
3346         ;;
3347         e500v2)
3348             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3349             disable altivec
3350         ;;
3351         e500)
3352             cpuflags="-mcpu=8540 -mhard-float"
3353             disable altivec
3354         ;;
3355     esac
3356
3357 elif enabled sparc; then
3358
3359     case $cpu in
3360         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3361             cpuflags="-mcpu=$cpu"
3362             disable vis
3363         ;;
3364         ultrasparc*|niagara[234])
3365             cpuflags="-mcpu=$cpu"
3366         ;;
3367     esac
3368
3369 elif enabled x86; then
3370
3371     case $cpu in
3372         i[345]86|pentium)
3373             cpuflags="-march=$cpu"
3374             disable mmx
3375         ;;
3376         # targets that do NOT support nopl and conditional mov (cmov)
3377         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3378             cpuflags="-march=$cpu"
3379             disable i686
3380         ;;
3381         # targets that do support nopl and conditional mov (cmov)
3382         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3383             cpuflags="-march=$cpu"
3384             enable i686
3385             enable fast_cmov
3386         ;;
3387         # targets that do support conditional mov but on which it's slow
3388         pentium4|pentium4m|prescott|nocona)
3389             cpuflags="-march=$cpu"
3390             enable i686
3391             disable fast_cmov
3392         ;;
3393     esac
3394
3395 fi
3396
3397 if [ "$cpu" != generic ]; then
3398     add_cflags  $cpuflags
3399     add_asflags $cpuflags
3400 fi
3401
3402 # compiler sanity check
3403 check_exec <<EOF
3404 int main(void){ return 0; }
3405 EOF
3406 if test "$?" != 0; then
3407     echo "$cc is unable to create an executable file."
3408     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3409         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3410         echo "Only do this if you know what cross compiling means."
3411     fi
3412     die "C compiler test failed."
3413 fi
3414
3415 add_cppflags -D_ISOC99_SOURCE
3416 add_cxxflags -D__STDC_CONSTANT_MACROS
3417 check_cflags -std=c99
3418 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3419 #include <stdlib.h>
3420 EOF
3421 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3422 #include <stdlib.h>
3423 EOF
3424
3425 check_host_cflags -std=c99
3426 check_host_cflags -Wall
3427
3428 check_64bit(){
3429     arch32=$1
3430     arch64=$2
3431     expr=$3
3432     check_code cc "" "int test[2*($expr) - 1]" &&
3433         subarch=$arch64 || subarch=$arch32
3434 }
3435
3436 case "$arch" in
3437     aarch64|alpha|ia64)
3438         spic=$shared
3439     ;;
3440     mips)
3441         check_64bit mips mips64 '_MIPS_SIM > 1'
3442         spic=$shared
3443     ;;
3444     parisc)
3445         check_64bit parisc parisc64 'sizeof(void *) > 4'
3446         spic=$shared
3447     ;;
3448     ppc)
3449         check_64bit ppc ppc64 'sizeof(void *) > 4'
3450         spic=$shared
3451     ;;
3452     sparc)
3453         check_64bit sparc sparc64 'sizeof(void *) > 4'
3454         spic=$shared
3455     ;;
3456     x86)
3457         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3458         if test "$subarch" = "x86_64"; then
3459             spic=$shared
3460         fi
3461     ;;
3462     ppc)
3463         check_cc <<EOF && subarch="ppc64"
3464         int test[(int)sizeof(char*) - 7];
3465 EOF
3466     ;;
3467 esac
3468
3469 enable $subarch
3470 enabled spic && enable_weak pic
3471
3472 # OS specific
3473 case $target_os in
3474     aix)
3475         SHFLAGS=-shared
3476         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3477         enabled shared && add_ldflags -Wl,-brtl
3478         ;;
3479     haiku)
3480         prefix_default="/boot/common"
3481         network_extralibs="-lnetwork"
3482         host_libs=
3483         ;;
3484     sunos)
3485         SHFLAGS='-shared -Wl,-h,$$(@F)'
3486         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3487         network_extralibs="-lsocket -lnsl"
3488         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3489         # When using suncc to build, the Solaris linker will mark
3490         # an executable with each instruction set encountered by
3491         # the Solaris assembler.  As our libraries contain their own
3492         # guards for processor-specific code, instead suppress
3493         # generation of the HWCAPS ELF section on Solaris x86 only.
3494         enabled_all suncc x86 &&
3495             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3496             add_ldflags -Wl,-M,mapfile
3497         nm_default='nm -P -g'
3498         ;;
3499     netbsd)
3500         disable symver
3501         oss_indev_extralibs="-lossaudio"
3502         oss_outdev_extralibs="-lossaudio"
3503         enabled gcc || check_ldflags -Wl,-zmuldefs
3504         ;;
3505     openbsd|bitrig)
3506         disable symver
3507         SHFLAGS='-shared'
3508         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3509         SLIB_INSTALL_LINKS=
3510         oss_indev_extralibs="-lossaudio"
3511         oss_outdev_extralibs="-lossaudio"
3512         ;;
3513     dragonfly)
3514         disable symver
3515         ;;
3516     freebsd)
3517         ;;
3518     bsd/os)
3519         add_extralibs -lpoll -lgnugetopt
3520         strip="strip -d"
3521         ;;
3522     darwin)
3523         gas="gas-preprocessor.pl $cc"
3524         enabled ppc && add_asflags -force_cpusubtype_ALL
3525         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3526         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3527         strip="${strip} -x"
3528         add_ldflags -Wl,-dynamic,-search_paths_first
3529         SLIBSUF=".dylib"
3530         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3531         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3532         objformat="macho"
3533         enabled x86_64 && objformat="macho64"
3534         enabled_any pic shared ||
3535             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3536         ;;
3537     mingw32*)
3538         if test $target_os = "mingw32ce"; then
3539             disable network
3540         else
3541             target_os=mingw32
3542         fi
3543         LIBTARGET=i386
3544         if enabled x86_64; then
3545             LIBTARGET="i386:x86-64"
3546         elif enabled arm; then
3547             LIBTARGET=arm-wince
3548         fi
3549         check_ldflags -Wl,--nxcompat
3550         check_ldflags -Wl,--dynamicbase
3551         shlibdir_default="$bindir_default"
3552         SLIBPREF=""
3553         SLIBSUF=".dll"
3554         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3555         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3556         dlltool="${cross_prefix}dlltool"
3557         if check_cmd lib.exe -list; then
3558             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3559             if enabled x86_64; then
3560                 LIBTARGET=x64
3561             fi
3562         elif check_cmd $dlltool --version; then
3563             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3564         fi
3565         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3566         SLIB_INSTALL_LINKS=
3567         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3568         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3569         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3570         objformat="win32"
3571         ranlib=:
3572         enable dos_paths
3573         ;;
3574     win32|win64)
3575         if enabled shared; then
3576             # Link to the import library instead of the normal static library
3577             # for shared libs.
3578             LD_LIB='%.lib'
3579             # Cannot build both shared and static libs with MSVC or icl.
3580             disable static
3581         fi
3582         shlibdir_default="$bindir_default"
3583         SLIBPREF=""
3584         SLIBSUF=".dll"
3585         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3586         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3587         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3588         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3589         SLIB_INSTALL_LINKS=
3590         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3591         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3592         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3593         objformat="win32"
3594         ranlib=:
3595         enable dos_paths
3596         ;;
3597     cygwin*)
3598         target_os=cygwin
3599         shlibdir_default="$bindir_default"
3600         SLIBPREF="cyg"
3601         SLIBSUF=".dll"
3602         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3603         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3604         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3605         SLIB_INSTALL_LINKS=
3606         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3607         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3608         objformat="win32"
3609         enable dos_paths
3610         ;;
3611     *-dos|freedos|opendos)
3612         network_extralibs="-lsocket"
3613         objformat="coff"
3614         enable dos_paths
3615         add_cppflags -U__STRICT_ANSI__
3616         ;;
3617     linux)
3618         enable dv1394
3619         ;;
3620     irix*)
3621         target_os=irix
3622         ranlib="echo ignoring ranlib"
3623         ;;
3624     os/2*)
3625         strip="lxlite -CS"
3626         ln_s="cp -f"
3627         objformat="aout"
3628         add_cppflags -D_GNU_SOURCE
3629         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3630         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3631         LIBSUF="_s.a"
3632         SLIBPREF=""
3633         SLIBSUF=".dll"
3634         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3635         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3636         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3637             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3638             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3639             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3640             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3641             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3642         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3643             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3644         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3645         enable dos_paths
3646         enable_weak os2threads
3647         ;;
3648     gnu/kfreebsd)
3649         add_cppflags -D_BSD_SOURCE
3650         ;;
3651     gnu)
3652         ;;
3653     qnx)
3654         add_cppflags -D_QNX_SOURCE
3655         network_extralibs="-lsocket"
3656         ;;
3657     symbian)
3658         SLIBSUF=".dll"
3659         enable dos_paths
3660         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3661         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3662         add_ldflags -Wl,--target1-abs,--no-undefined \
3663                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3664                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3665         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3666                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3667                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3668         ;;
3669     osf1)
3670         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3671         ;;
3672     minix)
3673         ;;
3674     plan9)
3675         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3676                      -D_REENTRANT_SOURCE        \
3677                      -D_RESEARCH_SOURCE         \
3678                      -DFD_SETSIZE=96            \
3679                      -DHAVE_SOCK_OPTS
3680         add_compat strtod.o strtod=avpriv_strtod
3681         network_extralibs='-lbsd'
3682         exeobjs=compat/plan9/main.o
3683         disable ffserver
3684         cp_f='cp'
3685         ;;
3686     none)
3687         ;;
3688     *)
3689         die "Unknown OS '$target_os'."
3690         ;;
3691 esac
3692
3693 # determine libc flavour
3694
3695 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3696 if check_cpp_condition features.h "defined __UCLIBC__"; then
3697     libc_type=uclibc
3698     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3699 elif check_cpp_condition features.h "defined __GLIBC__"; then
3700     libc_type=glibc
3701     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3702 # MinGW headers can be installed on Cygwin, so check for newlib first.
3703 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3704     libc_type=newlib
3705     add_cppflags -U__STRICT_ANSI__
3706 elif check_header _mingw.h; then
3707     libc_type=mingw
3708     check_cpp_condition _mingw.h \
3709         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3710             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3711         die "ERROR: MinGW runtime version must be >= 3.15."
3712     add_cppflags -U__STRICT_ANSI__
3713     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3714             __MINGW64_VERSION_MAJOR < 3"; then
3715         add_compat msvcrt/snprintf.o
3716         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3717     else
3718         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3719     fi
3720 elif check_func_headers stdlib.h _get_doserrno; then
3721     libc_type=msvcrt
3722     add_compat strtod.o strtod=avpriv_strtod
3723     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3724                                  _snprintf=avpriv_snprintf  \
3725                                  vsnprintf=avpriv_vsnprintf
3726     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3727     # 0x601 by default unless something else is set by the user.
3728     # This can easily lead to us detecting functions only present
3729     # in such new versions and producing binaries requiring windows 7.0.
3730     # Therefore explicitly set the default to XP unless the user has
3731     # set something else on the command line.
3732     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3733 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3734     libc_type=klibc
3735 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3736     libc_type=bionic
3737     add_compat strtod.o strtod=avpriv_strtod
3738 fi
3739
3740 test -n "$libc_type" && enable $libc_type
3741
3742 # hacks for compiler/libc/os combinations
3743
3744 if enabled_all tms470 glibc; then
3745     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3746     add_cppflags -D__USER_LABEL_PREFIX__=
3747     add_cppflags -D__builtin_memset=memset
3748     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3749     add_cflags   -pds=48    # incompatible redefinition of macro
3750 fi
3751
3752 if enabled_all ccc glibc; then
3753     add_ldflags -Wl,-z,now  # calls to libots crash without this
3754 fi
3755
3756 esc(){
3757     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3758 }
3759
3760 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3761
3762 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3763
3764 set_default $PATHS_LIST
3765 set_default nm
3766
3767 # we need to build at least one lib type
3768 if ! enabled_any static shared; then
3769     cat <<EOF
3770 At least one library type must be built.
3771 Specify --enable-static to build the static libraries or --enable-shared to
3772 build the shared libraries as well. To only build the shared libraries specify
3773 --disable-static in addition to --enable-shared.
3774 EOF
3775     exit 1;
3776 fi
3777
3778 # backward compatibility layer for incompatible_libav/fork_abi
3779 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3780 enabled incompatible_libav_abi && enable incompatible_fork_abi
3781
3782 die_license_disabled() {
3783     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3784 }
3785
3786 die_license_disabled_gpl() {
3787     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3788 }
3789
3790 die_license_disabled gpl frei0r
3791 die_license_disabled gpl libcdio
3792 die_license_disabled gpl libutvideo
3793 die_license_disabled gpl libvidstab
3794 die_license_disabled gpl libx264
3795 die_license_disabled gpl libxavs
3796 die_license_disabled gpl libxvid
3797 die_license_disabled gpl libzvbi
3798 die_license_disabled gpl x11grab
3799
3800 die_license_disabled nonfree libaacplus
3801 die_license_disabled nonfree libfaac
3802 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3803 enabled gpl && die_license_disabled_gpl nonfree openssl
3804
3805 die_license_disabled version3 libopencore_amrnb
3806 die_license_disabled version3 libopencore_amrwb
3807 die_license_disabled version3 libvo_aacenc
3808 die_license_disabled version3 libvo_amrwbenc
3809
3810 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3811
3812 disabled optimizations || check_cflags -fomit-frame-pointer
3813
3814 enable_weak_pic() {
3815     disabled pic && return
3816     enable pic
3817     add_cppflags -DPIC
3818     case "$target_os" in
3819     mingw*|cygwin*)
3820         ;;
3821     *)
3822         add_cflags -fPIC
3823         ;;
3824     esac
3825     add_asflags  -fPIC
3826 }
3827
3828 enabled pic && enable_weak_pic
3829
3830 check_cc <<EOF || die "Symbol mangling check failed."
3831 int ff_extern;
3832 EOF
3833 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3834 extern_prefix=${sym%%ff_extern*}
3835
3836 check_cc <<EOF && enable_weak inline_asm
3837 void foo(void) { __asm__ volatile ("" ::); }
3838 EOF
3839
3840 _restrict=
3841 for restrict_keyword in restrict __restrict__ __restrict; do
3842     check_cc <<EOF && _restrict=$restrict_keyword && break
3843 void foo(char * $restrict_keyword p);
3844 EOF
3845 done
3846
3847 check_cc <<EOF && enable pragma_deprecated
3848 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3849 EOF
3850
3851 check_cc <<EOF && enable attribute_packed
3852 struct { int x; } __attribute__((packed)) x;
3853 EOF
3854
3855 check_cc <<EOF && enable attribute_may_alias
3856 union { int x; } __attribute__((may_alias)) x;
3857 EOF
3858
3859 check_cc <<EOF || die "endian test failed"
3860 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3861 EOF
3862 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3863
3864 check_inline_asm inline_asm_labels '"1:\n"'
3865
3866 if enabled alpha; then
3867
3868     check_cflags -mieee
3869
3870 elif enabled arm; then
3871
3872     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3873 float func(float a, float b){ return a+b; }
3874 EOF
3875
3876     enabled thumb && check_cflags -mthumb || check_cflags -marm
3877     nogas=die
3878
3879     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3880         enable vfp_args
3881     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3882         case "${cross_prefix:-$cc}" in
3883             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3884             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3885 __asm__ (".eabi_attribute 28, 1");
3886 int main(void) { return 0; }
3887 EOF
3888         esac
3889         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3890     fi
3891
3892     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3893     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3894     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3895     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3896     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3897     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3898
3899     [ $target_os = linux ] ||
3900         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3901             $ARCH_EXT_LIST_ARM
3902
3903     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3904     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3905
3906     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3907
3908 elif enabled mips; then
3909
3910     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3911     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3912      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3913     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3914      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3915     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3916      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3917     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3918      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3919
3920 elif enabled parisc; then
3921
3922     if enabled gcc; then
3923         case $($cc -dumpversion) in
3924             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3925         esac
3926     fi
3927
3928 elif enabled ppc; then
3929
3930     enable local_aligned_8 local_aligned_16
3931
3932     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3933     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3934     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3935     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3936
3937     # AltiVec flags: The FSF version of GCC differs from the Apple version
3938     if enabled altivec; then
3939         if ! enabled_any pic ppc64; then
3940             nogas=warn
3941         fi
3942         check_cflags -maltivec -mabi=altivec &&
3943         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3944         check_cflags -faltivec
3945
3946         # check if our compiler supports Motorola AltiVec C API
3947         check_cc <<EOF || disable altivec
3948 $inc_altivec_h
3949 int main(void) {
3950     vector signed int v1 = (vector signed int) { 0 };
3951     vector signed int v2 = (vector signed int) { 1 };
3952     v1 = vec_add(v1, v2);
3953     return 0;
3954 }
3955 EOF
3956
3957         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3958     fi
3959
3960 elif enabled sparc; then
3961
3962     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3963
3964 elif enabled x86; then
3965
3966     check_builtin rdtsc    intrin.h   "__rdtsc()"
3967     check_builtin mm_empty mmintrin.h "_mm_empty()"
3968
3969     enable local_aligned_8 local_aligned_16
3970
3971     # check whether EBP is available on x86
3972     # As 'i' is stored on the stack, this program will crash
3973     # if the base pointer is used to access it because the
3974     # base pointer is cleared in the inline assembly code.
3975     check_exec_crash <<EOF && enable ebp_available
3976 volatile int i=0;
3977 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3978 return i;
3979 EOF
3980
3981     # check whether EBX is available on x86
3982     check_inline_asm ebx_available '""::"b"(0)' &&
3983         check_inline_asm ebx_available '"":::"%ebx"'
3984
3985     # check whether xmm clobbers are supported
3986     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3987
3988     # check whether binutils is new enough to compile SSSE3/MMXEXT
3989     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3990     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3991
3992     if ! disabled_any asm mmx yasm; then
3993         if check_cmd $yasmexe --version; then
3994             enabled x86_64 && yasm_extra="-m amd64"
3995             yasm_debug="-g dwarf2"
3996         elif check_cmd nasm -v; then
3997             yasmexe=nasm
3998             yasm_debug="-g -F dwarf"
3999             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4000         fi
4001
4002         YASMFLAGS="-f $objformat $yasm_extra"
4003         enabled pic               && append YASMFLAGS "-DPIC"
4004         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4005         case "$objformat" in
4006             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4007         esac
4008
4009         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
4010             die "yasm not found, use --disable-yasm for a crippled build"
4011         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4012         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4013         check_yasm "CPU amdnop" && enable cpunop
4014     fi
4015
4016     case "$cpu" in
4017         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4018             disable fast_clz
4019         ;;
4020     esac
4021
4022 fi
4023
4024 if enabled asm; then
4025     as=${gas:=$as}
4026     check_as <<EOF && enable gnu_as || \
4027         $nogas "GNU assembler not found, install gas-preprocessor"
4028 .macro m n
4029 \n: .int 0
4030 .endm
4031 m x
4032 EOF
4033 fi
4034
4035 check_ldflags -Wl,--as-needed
4036
4037 if check_func dlopen; then
4038     ldl=
4039 elif check_func dlopen -ldl; then
4040     ldl=-ldl
4041 fi
4042
4043 if ! disabled network; then
4044     check_type "sys/types.h sys/socket.h" socklen_t