doc/faq: add @command{} in the tool debug entry.
[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_deps="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_deps="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_deps="zlib"
1793 flashsv_encoder_deps="zlib"
1794 flashsv2_encoder_deps="zlib"
1795 flashsv2_decoder_deps="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_deps="zlib"
1801 g2m_decoder_select="dsputil"
1802 g729_decoder_select="dsputil"
1803 h261_decoder_select="error_resilience mpegvideo"
1804 h261_encoder_select="aandcttables mpegvideoenc"
1805 h263_decoder_select="error_resilience h263_parser mpegvideo"
1806 h263_encoder_select="aandcttables mpegvideoenc"
1807 h263i_decoder_select="h263_decoder"
1808 h263p_encoder_select="h263_encoder"
1809 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1810 h264_decoder_suggest="error_resilience"
1811 huffyuv_decoder_select="dsputil"
1812 huffyuv_encoder_select="dsputil huffman"
1813 iac_decoder_select="dsputil fft mdct sinewin"
1814 imc_decoder_select="dsputil fft mdct sinewin"
1815 indeo3_decoder_select="hpeldsp"
1816 interplay_video_decoder_select="hpeldsp"
1817 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1818 jpegls_encoder_select="golomb"
1819 jv_decoder_select="dsputil"
1820 lagarith_decoder_select="dsputil"
1821 ljpeg_encoder_select="aandcttables mpegvideoenc"
1822 loco_decoder_select="golomb"
1823 mdec_decoder_select="dsputil error_resilience mpegvideo"
1824 metasound_decoder_select="lsp mdct sinewin"
1825 mimic_decoder_select="dsputil hpeldsp"
1826 mjpeg_decoder_select="dsputil hpeldsp exif"
1827 mjpegb_decoder_select="dsputil hpeldsp exif"
1828 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1829 mlp_decoder_select="dsputil mlp_parser"
1830 motionpixels_decoder_select="dsputil"
1831 mp1_decoder_select="mpegaudio"
1832 mp1float_decoder_select="mpegaudio"
1833 mp2_decoder_select="mpegaudio"
1834 mp2float_decoder_select="mpegaudio"
1835 mp3_decoder_select="mpegaudio"
1836 mp3adu_decoder_select="mpegaudio"
1837 mp3adufloat_decoder_select="mpegaudio"
1838 mp3float_decoder_select="mpegaudio"
1839 mp3on4_decoder_select="mpegaudio"
1840 mp3on4float_decoder_select="mpegaudio"
1841 mpc7_decoder_select="dsputil mpegaudiodsp"
1842 mpc8_decoder_select="dsputil mpegaudiodsp"
1843 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1844 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1845 mpeg1video_decoder_select="error_resilience mpegvideo"
1846 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1847 mpeg2video_decoder_select="error_resilience mpegvideo"
1848 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1849 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1850 mpeg4_encoder_select="h263_encoder"
1851 msmpeg4v1_decoder_select="h263_decoder"
1852 msmpeg4v2_decoder_select="h263_decoder"
1853 msmpeg4v2_encoder_select="h263_encoder"
1854 msmpeg4v3_decoder_select="h263_decoder"
1855 msmpeg4v3_encoder_select="h263_encoder"
1856 mss2_decoder_select="error_resilience vc1_decoder"
1857 mxpeg_decoder_select="dsputil hpeldsp exif"
1858 nellymoser_decoder_select="mdct sinewin"
1859 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1860 nuv_decoder_select="dsputil lzo"
1861 png_decoder_deps="zlib"
1862 png_encoder_deps="zlib"
1863 png_encoder_select="dsputil"
1864 prores_decoder_select="dsputil"
1865 prores_encoder_select="dsputil"
1866 qcelp_decoder_select="lsp"
1867 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1868 ra_144_encoder_select="audio_frame_queue lpc"
1869 ralf_decoder_select="golomb"
1870 rtjpeg_decoder_select="dsputil"
1871 rv10_decoder_select="error_resilience h263_decoder"
1872 rv10_encoder_select="h263_encoder"
1873 rv20_decoder_select="error_resilience h263_decoder"
1874 rv20_encoder_select="h263_encoder"
1875 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1876 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1877 shorten_decoder_select="golomb"
1878 sipr_decoder_select="lsp"
1879 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1880 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1881 sonic_decoder_select="golomb"
1882 sonic_encoder_select="golomb"
1883 sonic_ls_encoder_select="golomb"
1884 sp5x_decoder_select="dsputil hpeldsp exif"
1885 svq1_decoder_select="hpeldsp"
1886 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1887 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1888 svq3_decoder_suggest="error_resilience zlib"
1889 tak_decoder_select="dsputil"
1890 theora_decoder_select="vp3_decoder"
1891 tiff_decoder_suggest="zlib"
1892 tiff_encoder_suggest="zlib"
1893 thp_decoder_select="dsputil hpeldsp exif"
1894 truehd_decoder_select="mlp_parser"
1895 truemotion2_decoder_select="dsputil"
1896 truespeech_decoder_select="dsputil"
1897 tscc_decoder_deps="zlib"
1898 twinvq_decoder_select="mdct lsp sinewin"
1899 utvideo_decoder_select="dsputil"
1900 utvideo_encoder_select="dsputil huffman"
1901 vble_decoder_select="dsputil"
1902 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1903 vc1image_decoder_select="vc1_decoder"
1904 vorbis_decoder_select="mdct"
1905 vorbis_encoder_select="mdct"
1906 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1907 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1908 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1909 vp6a_decoder_select="vp6_decoder"
1910 vp6f_decoder_select="vp6_decoder"
1911 vp8_decoder_select="h264pred videodsp"
1912 webp_decoder_select="vp8_decoder"
1913 wmapro_decoder_select="mdct sinewin"
1914 wmav1_decoder_select="mdct sinewin"
1915 wmav1_encoder_select="mdct sinewin"
1916 wmav2_decoder_select="mdct sinewin"
1917 wmav2_encoder_select="mdct sinewin"
1918 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1919 wmv1_decoder_select="h263_decoder"
1920 wmv1_encoder_select="h263_encoder"
1921 wmv2_decoder_select="h263_decoder videodsp"
1922 wmv2_encoder_select="h263_encoder"
1923 wmv3_decoder_select="vc1_decoder"
1924 wmv3image_decoder_select="wmv3_decoder"
1925 zerocodec_decoder_deps="zlib"
1926 zlib_decoder_deps="zlib"
1927 zlib_encoder_deps="zlib"
1928 zmbv_decoder_deps="zlib"
1929 zmbv_encoder_deps="zlib"
1930
1931 # hardware accelerators
1932 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1933 dxva2_deps="dxva2api_h"
1934 vaapi_deps="va_va_h"
1935 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1936 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1937 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1938
1939 h263_vaapi_hwaccel_deps="vaapi"
1940 h263_vaapi_hwaccel_select="h263_decoder"
1941 h263_vdpau_hwaccel_deps="vdpau"
1942 h263_vdpau_hwaccel_select="h263_decoder"
1943 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1944 h264_dxva2_hwaccel_deps="dxva2"
1945 h264_dxva2_hwaccel_select="h264_decoder"
1946 h264_vaapi_hwaccel_deps="vaapi"
1947 h264_vaapi_hwaccel_select="h264_decoder"
1948 h264_vda_decoder_deps="vda"
1949 h264_vda_decoder_select="h264_decoder"
1950 h264_vda_hwaccel_deps="vda"
1951 h264_vda_hwaccel_select="h264_decoder"
1952 h264_vdpau_decoder_deps="vdpau"
1953 h264_vdpau_decoder_select="h264_decoder"
1954 h264_vdpau_hwaccel_deps="vdpau"
1955 h264_vdpau_hwaccel_select="h264_decoder"
1956 mpeg_vdpau_decoder_deps="vdpau"
1957 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1958 mpeg1_vdpau_decoder_deps="vdpau"
1959 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1960 mpeg1_vdpau_hwaccel_deps="vdpau"
1961 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1962 mpeg2_crystalhd_decoder_select="crystalhd"
1963 mpeg2_dxva2_hwaccel_deps="dxva2"
1964 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1965 mpeg2_vaapi_hwaccel_deps="vaapi"
1966 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1967 mpeg2_vdpau_hwaccel_deps="vdpau"
1968 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1969 mpeg4_crystalhd_decoder_select="crystalhd"
1970 mpeg4_vaapi_hwaccel_deps="vaapi"
1971 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1972 mpeg4_vdpau_decoder_deps="vdpau"
1973 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1974 mpeg4_vdpau_hwaccel_deps="vdpau"
1975 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1976 msmpeg4_crystalhd_decoder_select="crystalhd"
1977 vc1_crystalhd_decoder_select="crystalhd"
1978 vc1_dxva2_hwaccel_deps="dxva2"
1979 vc1_dxva2_hwaccel_select="vc1_decoder"
1980 vc1_vaapi_hwaccel_deps="vaapi"
1981 vc1_vaapi_hwaccel_select="vc1_decoder"
1982 vc1_vdpau_decoder_deps="vdpau"
1983 vc1_vdpau_decoder_select="vc1_decoder"
1984 vc1_vdpau_hwaccel_deps="vdpau"
1985 vc1_vdpau_hwaccel_select="vc1_decoder"
1986 wmv3_crystalhd_decoder_select="crystalhd"
1987 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1988 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1989 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1990 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1991
1992 # parsers
1993 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1994 mpeg4video_parser_select="error_resilience mpegvideo"
1995 mpegvideo_parser_select="error_resilience mpegvideo"
1996 vc1_parser_select="mpegvideo"
1997
1998 # external libraries
1999 libaacplus_encoder_deps="libaacplus"
2000 libcelt_decoder_deps="libcelt"
2001 libfaac_encoder_deps="libfaac"
2002 libfaac_encoder_select="audio_frame_queue"
2003 libfdk_aac_decoder_deps="libfdk_aac"
2004 libfdk_aac_encoder_deps="libfdk_aac"
2005 libfdk_aac_encoder_select="audio_frame_queue"
2006 libgme_demuxer_deps="libgme"
2007 libgsm_decoder_deps="libgsm"
2008 libgsm_encoder_deps="libgsm"
2009 libgsm_ms_decoder_deps="libgsm"
2010 libgsm_ms_encoder_deps="libgsm"
2011 libilbc_decoder_deps="libilbc"
2012 libilbc_encoder_deps="libilbc"
2013 libmodplug_demuxer_deps="libmodplug"
2014 libmp3lame_encoder_deps="libmp3lame"
2015 libmp3lame_encoder_select="audio_frame_queue"
2016 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2017 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2018 libopencore_amrnb_encoder_select="audio_frame_queue"
2019 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2020 libopenjpeg_decoder_deps="libopenjpeg"
2021 libopenjpeg_encoder_deps="libopenjpeg"
2022 libopus_decoder_deps="libopus"
2023 libopus_encoder_deps="libopus"
2024 libopus_encoder_select="audio_frame_queue"
2025 libquvi_demuxer_deps="libquvi"
2026 libschroedinger_decoder_deps="libschroedinger"
2027 libschroedinger_encoder_deps="libschroedinger"
2028 libshine_encoder_deps="libshine"
2029 libshine_encoder_select="audio_frame_queue"
2030 libspeex_decoder_deps="libspeex"
2031 libspeex_encoder_deps="libspeex"
2032 libspeex_encoder_select="audio_frame_queue"
2033 libstagefright_h264_decoder_deps="libstagefright_h264"
2034 libtheora_encoder_deps="libtheora"
2035 libtwolame_encoder_deps="libtwolame"
2036 libvo_aacenc_encoder_deps="libvo_aacenc"
2037 libvo_aacenc_encoder_select="audio_frame_queue"
2038 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2039 libvorbis_decoder_deps="libvorbis"
2040 libvorbis_encoder_deps="libvorbis"
2041 libvorbis_encoder_select="audio_frame_queue"
2042 libvpx_vp8_decoder_deps="libvpx"
2043 libvpx_vp8_encoder_deps="libvpx"
2044 libvpx_vp9_decoder_deps="libvpx"
2045 libvpx_vp9_encoder_deps="libvpx"
2046 libwavpack_encoder_deps="libwavpack"
2047 libx264_encoder_deps="libx264"
2048 libx264rgb_encoder_deps="libx264"
2049 libxavs_encoder_deps="libxavs"
2050 libxvid_encoder_deps="libxvid"
2051 libutvideo_decoder_deps="libutvideo"
2052 libutvideo_encoder_deps="libutvideo"
2053 libzvbi_teletext_decoder_deps="libzvbi"
2054
2055 # demuxers / muxers
2056 ac3_demuxer_select="ac3_parser"
2057 asf_demuxer_select="riffdec"
2058 asf_muxer_select="riffenc"
2059 asf_stream_muxer_select="asf_muxer"
2060 avi_demuxer_select="riffdec"
2061 avi_muxer_select="riffenc"
2062 avisynth_demuxer_deps="avisynth"
2063 avisynth_demuxer_select="riffdec"
2064 caf_demuxer_select="riffdec"
2065 dirac_demuxer_select="dirac_parser"
2066 dts_demuxer_select="dca_parser"
2067 dtshd_demuxer_select="dca_parser"
2068 dxa_demuxer_select="riffdec"
2069 eac3_demuxer_select="ac3_parser"
2070 f4v_muxer_select="mov_muxer"
2071 flac_demuxer_select="flac_parser"
2072 hls_muxer_select="mpegts_muxer"
2073 ipod_muxer_select="mov_muxer"
2074 ismv_muxer_select="mov_muxer"
2075 libnut_demuxer_deps="libnut"
2076 libnut_muxer_deps="libnut"
2077 matroska_audio_muxer_select="matroska_muxer"
2078 matroska_demuxer_select="riffdec"
2079 matroska_demuxer_suggest="bzlib lzo zlib"
2080 matroska_muxer_select="riffenc"
2081 mmf_muxer_select="riffenc"
2082 mov_demuxer_select="riffdec"
2083 mov_demuxer_suggest="zlib"
2084 mov_muxer_select="riffenc rtpenc_chain"
2085 mp3_demuxer_select="mpegaudio_parser"
2086 mp4_muxer_select="mov_muxer"
2087 mpegts_muxer_select="adts_muxer latm_muxer"
2088 mpegtsraw_demuxer_select="mpegts_demuxer"
2089 mxf_d10_muxer_select="mxf_muxer"
2090 nut_muxer_select="riffenc"
2091 nuv_demuxer_select="riffdec"
2092 ogg_demuxer_select="golomb"
2093 psp_muxer_select="mov_muxer"
2094 rtp_demuxer_select="sdp_demuxer"
2095 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2096 rtsp_demuxer_select="http_protocol rtpdec"
2097 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2098 sap_demuxer_select="sdp_demuxer"
2099 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2100 sdp_demuxer_select="rtpdec"
2101 smoothstreaming_muxer_select="ismv_muxer"
2102 spdif_muxer_select="aac_parser"
2103 tak_demuxer_select="tak_parser"
2104 tg2_muxer_select="mov_muxer"
2105 tgp_muxer_select="mov_muxer"
2106 vobsub_demuxer_select="mpegps_demuxer"
2107 w64_demuxer_select="wav_demuxer"
2108 w64_muxer_select="wav_muxer"
2109 wav_demuxer_select="riffdec"
2110 wav_muxer_select="riffenc"
2111 webm_muxer_select="riffenc"
2112 wtv_demuxer_select="riffdec"
2113 xmv_demuxer_select="riffdec"
2114 xwma_demuxer_select="riffdec"
2115
2116 # indevs / outdevs
2117 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2118 alsa_outdev_deps="alsa_asoundlib_h"
2119 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2120 caca_outdev_deps="libcaca"
2121 dshow_indev_deps="IBaseFilter"
2122 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2123 dv1394_indev_deps="dv1394"
2124 dv1394_indev_select="dv_demuxer"
2125 fbdev_indev_deps="linux_fb_h"
2126 iec61883_indev_deps="libiec61883"
2127 jack_indev_deps="jack_jack_h sem_timedwait"
2128 lavfi_indev_deps="avfilter"
2129 libcdio_indev_deps="libcdio"
2130 libdc1394_indev_deps="libdc1394"
2131 libv4l2_indev_deps="libv4l2"
2132 openal_indev_deps="openal"
2133 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2134 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2135 pulse_indev_deps="libpulse"
2136 sdl_outdev_deps="sdl"
2137 sndio_indev_deps="sndio_h"
2138 sndio_outdev_deps="sndio_h"
2139 v4l_indev_deps="linux_videodev_h"
2140 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2141 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2142 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2143 vfwcap_indev_extralibs="-lavicap32"
2144 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2145 xv_outdev_extralibs="-lXv -lX11 -lXext"
2146 x11grab_indev_deps="x11grab"
2147
2148 # protocols
2149 bluray_protocol_deps="libbluray"
2150 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2151 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2152 ffrtmpcrypt_protocol_select="tcp_protocol"
2153 ffrtmphttp_protocol_deps="!librtmp_protocol"
2154 ffrtmphttp_protocol_select="http_protocol"
2155 ftp_protocol_select="tcp_protocol"
2156 gopher_protocol_select="network"
2157 httpproxy_protocol_select="tcp_protocol"
2158 http_protocol_select="tcp_protocol"
2159 https_protocol_select="tls_protocol"
2160 librtmp_protocol_deps="librtmp"
2161 librtmpe_protocol_deps="librtmp"
2162 librtmps_protocol_deps="librtmp"
2163 librtmpt_protocol_deps="librtmp"
2164 librtmpte_protocol_deps="librtmp"
2165 libssh_protocol_deps="libssh"
2166 mmsh_protocol_select="http_protocol"
2167 mmst_protocol_select="network"
2168 rtmp_protocol_deps="!librtmp_protocol"
2169 rtmp_protocol_select="tcp_protocol"
2170 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2171 rtmps_protocol_deps="!librtmp_protocol"
2172 rtmps_protocol_select="tls_protocol"
2173 rtmpt_protocol_select="ffrtmphttp_protocol"
2174 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2175 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2176 rtp_protocol_select="udp_protocol"
2177 sctp_protocol_deps="struct_sctp_event_subscribe"
2178 sctp_protocol_select="network"
2179 srtp_protocol_select="rtp_protocol"
2180 tcp_protocol_select="network"
2181 tls_protocol_deps_any="openssl gnutls"
2182 tls_protocol_select="tcp_protocol"
2183 udp_protocol_select="network"
2184 unix_protocol_deps="sys_un_h"
2185 unix_protocol_select="network"
2186
2187 # filters
2188 aconvert_filter_deps="swresample"
2189 amovie_filter_deps="avcodec avformat"
2190 aresample_filter_deps="swresample"
2191 ass_filter_deps="libass"
2192 asyncts_filter_deps="avresample"
2193 atempo_filter_deps="avcodec rdft"
2194 azmq_filter_deps="libzmq"
2195 blackframe_filter_deps="gpl"
2196 boxblur_filter_deps="gpl"
2197 colormatrix_filter_deps="gpl"
2198 cropdetect_filter_deps="gpl"
2199 dctdnoiz_filter_deps="avcodec fft"
2200 delogo_filter_deps="gpl"
2201 deshake_filter_deps="avcodec"
2202 deshake_filter_select="dsputil"
2203 drawtext_filter_deps="libfreetype"
2204 ebur128_filter_deps="gpl"
2205 flite_filter_deps="libflite"
2206 frei0r_filter_deps="frei0r dlopen"
2207 frei0r_filter_extralibs='$ldl'
2208 frei0r_src_filter_deps="frei0r dlopen"
2209 frei0r_src_filter_extralibs='$ldl'
2210 geq_filter_deps="gpl"
2211 histeq_filter_deps="gpl"
2212 hqdn3d_filter_deps="gpl"
2213 interlace_filter_deps="gpl"
2214 kerndeint_filter_deps="gpl"
2215 ladspa_filter_deps="ladspa dlopen"
2216 mcdeint_filter_deps="avcodec gpl"
2217 movie_filter_deps="avcodec avformat"
2218 mp_filter_deps="gpl avcodec swscale inline_asm"
2219 mpdecimate_filter_deps="gpl avcodec"
2220 mptestsrc_filter_deps="gpl"
2221 negate_filter_deps="lut_filter"
2222 noise_filter_deps="gpl"
2223 perspective_filter_deps="gpl"
2224 resample_filter_deps="avresample"
2225 ocv_filter_deps="libopencv"
2226 owdenoise_filter_deps="gpl"
2227 pan_filter_deps="swresample"
2228 phase_filter_deps="gpl"
2229 pp_filter_deps="gpl postproc"
2230 pullup_filter_deps="gpl"
2231 removelogo_filter_deps="avcodec avformat swscale"
2232 sab_filter_deps="gpl swscale"
2233 scale_filter_deps="swscale"
2234 smartblur_filter_deps="gpl swscale"
2235 showspectrum_filter_deps="avcodec rdft"
2236 spp_filter_deps="gpl avcodec fft"
2237 stereo3d_filter_deps="gpl"
2238 subtitles_filter_deps="avformat avcodec libass"
2239 super2xsai_filter_deps="gpl"
2240 tinterlace_filter_deps="gpl"
2241 vidstabdetect_filter_deps="libvidstab"
2242 vidstabtransform_filter_deps="libvidstab"
2243 yadif_filter_deps="gpl"
2244 pixfmts_super2xsai_test_deps="super2xsai_filter"
2245 tinterlace_merge_test_deps="tinterlace_filter"
2246 tinterlace_pad_test_deps="tinterlace_filter"
2247 zmq_filter_deps="libzmq"
2248
2249 # libraries
2250 avcodec_deps="avutil"
2251 avdevice_deps="avutil avcodec avformat"
2252 avfilter_deps="avutil"
2253 avformat_deps="avutil avcodec"
2254 avresample_deps="avutil"
2255 postproc_deps="avutil gpl"
2256 swscale_deps="avutil"
2257
2258 # programs
2259 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2260 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2261                null_filter
2262                setpts_filter trim_filter"
2263 ffplay_deps="avcodec avformat swscale swresample sdl"
2264 ffplay_select="rdft crop_filter"
2265 ffprobe_deps="avcodec avformat"
2266 ffserver_deps="avformat fork sarestart"
2267 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2268 ffserver_extralibs='$ldl'
2269
2270 # documentation
2271 podpages_deps="perl"
2272 manpages_deps="perl pod2man"
2273 htmlpages_deps="texi2html"
2274 txtpages_deps="makeinfo"
2275 doc_deps_any="manpages htmlpages podpages txtpages"
2276
2277 # default parameters
2278
2279 logfile="config.log"
2280
2281 # installation paths
2282 prefix_default="/usr/local"
2283 bindir_default='${prefix}/bin'
2284 datadir_default='${prefix}/share/ffmpeg'
2285 docdir_default='${prefix}/share/doc/ffmpeg'
2286 incdir_default='${prefix}/include'
2287 libdir_default='${prefix}/lib'
2288 mandir_default='${prefix}/share/man'
2289 shlibdir_default="$libdir_default"
2290
2291 # toolchain
2292 ar_default="ar"
2293 cc_default="gcc"
2294 cxx_default="g++"
2295 host_cc_default="gcc"
2296 cp_f="cp -f"
2297 install="install"
2298 ln_s="ln -s -f"
2299 nm_default="nm -g"
2300 objformat="elf"
2301 pkg_config_default=pkg-config
2302 ranlib="ranlib"
2303 strip_default="strip"
2304 yasmexe_default="yasm"
2305
2306 nogas=":"
2307
2308 # machine
2309 arch_default=$(uname -m)
2310 cpu="generic"
2311
2312 # OS
2313 target_os_default=$(tolower $(uname -s))
2314 host_os=$target_os_default
2315
2316 # configurable options
2317 enable $PROGRAM_LIST
2318 enable $DOCUMENT_LIST
2319 enable $(filter_out avresample $LIBRARY_LIST)
2320 enable stripping
2321
2322 enable asm
2323 enable debug
2324 enable doc
2325 enable optimizations
2326 enable runtime_cpudetect
2327 enable safe_bitstream_reader
2328 enable static
2329 enable swscale_alpha
2330
2331 # Enable hwaccels by default.
2332 enable dxva2 vaapi vdpau
2333
2334 # build settings
2335 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2336 LIBPREF="lib"
2337 LIBSUF=".a"
2338 FULLNAME='$(NAME)$(BUILDSUF)'
2339 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2340 SLIBPREF="lib"
2341 SLIBSUF=".so"
2342 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2343 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2344 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2345 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2346 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2347 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2348
2349 asflags_filter=echo
2350 cflags_filter=echo
2351 ldflags_filter=echo
2352
2353 AS_C='-c'
2354 AS_O='-o $@'
2355 CC_C='-c'
2356 CC_E='-E -o $@'
2357 CC_O='-o $@'
2358 CXX_C='-c'
2359 CXX_O='-o $@'
2360 LD_O='-o $@'
2361 LD_LIB='-l%'
2362 LD_PATH='-L'
2363 HOSTCC_C='-c'
2364 HOSTCC_O='-o $@'
2365 HOSTLD_O='-o $@'
2366
2367 host_cflags='-O3 -g'
2368 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2369 host_libs='-lm'
2370 host_cflags_filter=echo
2371 host_ldflags_filter=echo
2372
2373 target_path='$(CURDIR)'
2374
2375 # since the object filename is not given with the -MM flag, the compiler
2376 # is only able to print the basename, and we must add the path ourselves
2377 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2378 DEPFLAGS='-MM'
2379
2380 # find source path
2381 if test -f configure; then
2382     source_path=.
2383 else
2384     source_path=$(cd $(dirname "$0"); pwd)
2385     echo "$source_path" | grep -q '[[:blank:]]' &&
2386         die "Out of tree builds are impossible with whitespace in source path."
2387     test -e "$source_path/config.h" &&
2388         die "Out of tree builds are impossible with config.h in source dir."
2389 fi
2390
2391 for v in "$@"; do
2392     r=${v#*=}
2393     l=${v%"$r"}
2394     r=$(sh_quote "$r")
2395     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2396 done
2397
2398 find_things(){
2399     thing=$1
2400     pattern=$2
2401     file=$source_path/$3
2402     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2403 }
2404
2405 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2406 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2407 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2408 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2409 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2410 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2411 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2412 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2413 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2414 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2415 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2416
2417 ALL_COMPONENTS="
2418     $BSF_LIST
2419     $DECODER_LIST
2420     $DEMUXER_LIST
2421     $ENCODER_LIST
2422     $FILTER_LIST
2423     $HWACCEL_LIST
2424     $INDEV_LIST
2425     $MUXER_LIST
2426     $OUTDEV_LIST
2427     $PARSER_LIST
2428     $PROTOCOL_LIST
2429 "
2430
2431 for n in $COMPONENT_LIST; do
2432     v=$(toupper ${n%s})_LIST
2433     eval enable \$$v
2434     eval ${n}_if_any="\$$v"
2435 done
2436
2437 enable $ARCH_EXT_LIST
2438
2439 die_unknown(){
2440     echo "Unknown option \"$1\"."
2441     echo "See $0 --help for available options."
2442     exit 1
2443 }
2444
2445 print_3_columns() {
2446     cat | tr ' ' '\n' | sort | pr -r -3 -t
2447 }
2448
2449 show_list() {
2450     suffix=_$1
2451     shift
2452     echo $* | sed s/$suffix//g | print_3_columns
2453     exit 0
2454 }
2455
2456 rand_list(){
2457     IFS=', '
2458     set -- $*
2459     unset IFS
2460     for thing; do
2461         comp=${thing%:*}
2462         prob=${thing#$comp}
2463         prob=${prob#:}
2464         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2465         echo "prob ${prob:-0.5}"
2466         printf '%s\n' $comp
2467     done
2468 }
2469
2470 do_random(){
2471     action=$1
2472     shift
2473     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2474     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2475 }
2476
2477 for opt do
2478     optval="${opt#*=}"
2479     case "$opt" in
2480         --extra-ldflags=*)
2481             add_ldflags $optval
2482         ;;
2483         --extra-libs=*)
2484             add_extralibs $optval
2485         ;;
2486         --disable-devices)
2487             disable $INDEV_LIST $OUTDEV_LIST
2488         ;;
2489         --enable-debug=*)
2490             debuglevel="$optval"
2491         ;;
2492         --disable-programs)
2493             disable $PROGRAM_LIST
2494         ;;
2495         --disable-everything)
2496             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2497         ;;
2498         --disable-all)
2499             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2500             disable $LIBRARY_LIST $PROGRAM_LIST doc
2501         ;;
2502         --enable-random|--disable-random)
2503             action=${opt%%-random}
2504             do_random ${action#--} $COMPONENT_LIST
2505         ;;
2506         --enable-random=*|--disable-random=*)
2507             action=${opt%%-random=*}
2508             do_random ${action#--} $optval
2509         ;;
2510         --enable-*=*|--disable-*=*)
2511             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2512             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2513             eval list=\$$(toupper $thing)_LIST
2514             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2515             list=$(filter "$name" $list)
2516             [ "$list" = "" ] && warn "Option $opt did not match anything"
2517             $action $list
2518         ;;
2519         --enable-?*|--disable-?*)
2520             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2521             if is_in $option $COMPONENT_LIST; then
2522                 test $action = disable && action=unset
2523                 eval $action \$$(toupper ${option%s})_LIST
2524             elif is_in $option $CMDLINE_SELECT; then
2525                 $action $option
2526             else
2527                 die_unknown $opt
2528             fi
2529         ;;
2530         --list-*)
2531             NAME="${opt#--list-}"
2532             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2533             NAME=${NAME%s}
2534             eval show_list $NAME \$$(toupper $NAME)_LIST
2535         ;;
2536         --help|-h) show_help
2537         ;;
2538         --fatal-warnings) enable fatal_warnings
2539         ;;
2540         *)
2541             optname="${opt%%=*}"
2542             optname="${optname#--}"
2543             optname=$(echo "$optname" | sed 's/-/_/g')
2544             if is_in $optname $CMDLINE_SET; then
2545                 eval $optname='$optval'
2546             elif is_in $optname $CMDLINE_APPEND; then
2547                 append $optname "$optval"
2548             else
2549                 die_unknown $opt
2550             fi
2551         ;;
2552     esac
2553 done
2554
2555 disabled logging && logfile=/dev/null
2556
2557 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2558 set >> $logfile
2559
2560 test -n "$cross_prefix" && enable cross_compile
2561
2562 if enabled cross_compile; then
2563     test -n "$arch" && test -n "$target_os" ||
2564         die "Must specify target arch and OS when cross-compiling"
2565 fi
2566
2567 ar_default="${cross_prefix}${ar_default}"
2568 cc_default="${cross_prefix}${cc_default}"
2569 cxx_default="${cross_prefix}${cxx_default}"
2570 nm_default="${cross_prefix}${nm_default}"
2571 pkg_config_default="${cross_prefix}${pkg_config_default}"
2572 ranlib="${cross_prefix}${ranlib}"
2573 strip_default="${cross_prefix}${strip_default}"
2574
2575 sysinclude_default="${sysroot}/usr/include"
2576
2577 test -n "$valgrind" && toolchain="valgrind-memcheck"
2578
2579 case "$toolchain" in
2580     clang-asan)
2581         cc_default="clang"
2582         add_cflags  -fsanitize=address
2583         add_ldflags -fsanitize=address
2584     ;;
2585     clang-tsan)
2586         cc_default="clang"
2587         add_cflags  -fsanitize=thread -pie
2588         add_ldflags -fsanitize=thread -pie
2589     ;;
2590     gcc-asan)
2591         cc_default="gcc"
2592         add_cflags  -fsanitize=address
2593         add_ldflags -fsanitize=address
2594     ;;
2595     gcc-tsan)
2596         cc_default="gcc"
2597         add_cflags  -fsanitize=thread -pie -fPIC
2598         add_ldflags -fsanitize=thread -pie -fPIC
2599     ;;
2600     valgrind-massif)
2601         target_exec_default=${valgrind:-"valgrind"}
2602         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"
2603     ;;
2604     valgrind-memcheck)
2605         target_exec_default=${valgrind:-"valgrind"}
2606         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2607     ;;
2608     msvc)
2609         cc_default="c99wrap cl"
2610         ld_default="c99wrap link"
2611         nm_default="dumpbin -symbols"
2612         ar_default="lib"
2613         target_os_default="win32"
2614     ;;
2615     icl)
2616         cc_default="c99wrap -noconv icl"
2617         ld_default="c99wrap xilink"
2618         nm_default="dumpbin -symbols"
2619         ar_default="xilib"
2620         target_os_default="win32"
2621     ;;
2622     gcov)
2623         add_cflags  -fprofile-arcs -ftest-coverage
2624         add_ldflags -fprofile-arcs -ftest-coverage
2625     ;;
2626     ?*)
2627         die "Unknown toolchain $toolchain"
2628     ;;
2629 esac
2630
2631 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2632 enabled cross_compile || host_cc_default=$cc
2633 set_default host_cc
2634
2635 if ! $pkg_config --version >/dev/null 2>&1; then
2636     warn "$pkg_config not found, library detection may fail."
2637     pkg_config=false
2638 fi
2639
2640 exesuf() {
2641     case $1 in
2642         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2643     esac
2644 }
2645
2646 EXESUF=$(exesuf $target_os)
2647 HOSTEXESUF=$(exesuf $host_os)
2648
2649 # set temporary file name
2650 : ${TMPDIR:=$TEMPDIR}
2651 : ${TMPDIR:=$TMP}
2652 : ${TMPDIR:=/tmp}
2653
2654 if ! check_cmd mktemp -u XXXXXX; then
2655     # simple replacement for missing mktemp
2656     # NOT SAFE FOR GENERAL USE
2657     mktemp(){
2658         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2659     }
2660 fi
2661
2662 tmpfile(){
2663     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2664         (set -C; exec > $tmp) 2>/dev/null ||
2665         die "Unable to create temporary file in $TMPDIR."
2666     append TMPFILES $tmp
2667     eval $1=$tmp
2668 }
2669
2670 trap 'rm -f -- $TMPFILES' EXIT
2671
2672 tmpfile TMPASM .asm
2673 tmpfile TMPC   .c
2674 tmpfile TMPCPP .cpp
2675 tmpfile TMPE   $EXESUF
2676 tmpfile TMPH   .h
2677 tmpfile TMPO   .o
2678 tmpfile TMPS   .S
2679 tmpfile TMPSH  .sh
2680 tmpfile TMPV   .ver
2681
2682 unset -f mktemp
2683
2684 chmod +x $TMPE
2685
2686 # make sure we can execute files in $TMPDIR
2687 cat > $TMPSH 2>> $logfile <<EOF
2688 #! /bin/sh
2689 EOF
2690 chmod +x $TMPSH >> $logfile 2>&1
2691 if ! $TMPSH >> $logfile 2>&1; then
2692     cat <<EOF
2693 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2694 variable to another directory and make sure that it is not mounted noexec.
2695 EOF
2696     die "Sanity test failed."
2697 fi
2698
2699 ccc_flags(){
2700     for flag; do
2701         case $flag in
2702             -std=c99)           echo -c99                       ;;
2703             -mcpu=*)            echo -arch ${flag#*=}           ;;
2704             -mieee)             echo -ieee                      ;;
2705             -O*|-fast)          echo $flag                      ;;
2706             -fno-math-errno)    echo -assume nomath_errno       ;;
2707             -g)                 echo -g3                        ;;
2708             -Wall)              echo -msg_enable level2         ;;
2709             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2710             -Wl,*)              echo $flag                      ;;
2711             -f*|-W*)                                            ;;
2712             *)                  echo $flag                      ;;
2713         esac
2714    done
2715 }
2716
2717 cparser_flags(){
2718     for flag; do
2719         case $flag in
2720             -Wno-switch)             echo -Wno-switch-enum ;;
2721             -Wno-format-zero-length) ;;
2722             -Wdisabled-optimization) ;;
2723             -Wno-pointer-sign)       echo -Wno-other ;;
2724             *)                       echo $flag ;;
2725         esac
2726     done
2727 }
2728
2729 msvc_common_flags(){
2730     for flag; do
2731         case $flag in
2732             # In addition to specifying certain flags under the compiler
2733             # specific filters, they must be specified here as well or else the
2734             # generic catch all at the bottom will print the original flag.
2735             -Wall)                ;;
2736             -std=c99)             ;;
2737             # Common flags
2738             -fomit-frame-pointer) ;;
2739             -g)                   echo -Z7 ;;
2740             -fno-math-errno)      ;;
2741             -fno-common)          ;;
2742             -fno-signed-zeros)    ;;
2743             -fPIC)                ;;
2744             -mthumb)              ;;
2745             -march=*)             ;;
2746             -lz)                  echo zlib.lib ;;
2747             -lavifil32)           echo vfw32.lib ;;
2748             -lavicap32)           echo vfw32.lib user32.lib ;;
2749             -l*)                  echo ${flag#-l}.lib ;;
2750             *)                    echo $flag ;;
2751         esac
2752     done
2753 }
2754
2755 msvc_flags(){
2756     msvc_common_flags "$@"
2757     for flag; do
2758         case $flag in
2759             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2760                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2761                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2762                                        -wd4554 \
2763                                        -wd4273 ;;
2764         esac
2765     done
2766 }
2767
2768 icl_flags(){
2769     msvc_common_flags "$@"
2770     for flag; do
2771         case $flag in
2772             # Despite what Intel's documentation says -Wall, which is supported
2773             # on Windows, does enable remarks so disable them here.
2774             -Wall)                echo $flag -Qdiag-disable:remark ;;
2775             -std=c99)             echo -Qstd=c99 ;;
2776         esac
2777     done
2778 }
2779
2780 pgi_flags(){
2781     for flag; do
2782         case $flag in
2783             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2784             -fomit-frame-pointer) echo -Mnoframe ;;
2785             -g)                   echo -gopt ;;
2786             *)                    echo $flag ;;
2787         esac
2788     done
2789 }
2790
2791 suncc_flags(){
2792     for flag; do
2793         case $flag in
2794             -march=*|-mcpu=*)
2795                 case "${flag#*=}" in
2796                     native)                   echo -xtarget=native       ;;
2797                     v9|niagara)               echo -xarch=sparc          ;;
2798                     ultrasparc)               echo -xarch=sparcvis       ;;
2799                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2800                     i586|pentium)             echo -xchip=pentium        ;;
2801                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2802                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2803                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2804                     pentium4*)          echo -xtarget=pentium4           ;;
2805                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2806                     *-sse3)             echo -xarch=sse3                 ;;
2807                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2808                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2809                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2810                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2811                     bdver*)                    echo -xarch=avx           ;;
2812                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2813                     k8|opteron|athlon64|athlon-fx)
2814                                                echo -xarch=sse2a         ;;
2815                     athlon*)                   echo -xarch=pentium_proa  ;;
2816                 esac
2817                 ;;
2818             -std=c99)             echo -xc99              ;;
2819             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2820             -fPIC)                echo -KPIC -xcode=pic32 ;;
2821             -W*,*)                echo $flag              ;;
2822             -f*-*|-W*|-mimpure-text)                      ;;
2823             -shared)              echo -G                 ;;
2824             *)                    echo $flag              ;;
2825         esac
2826     done
2827 }
2828
2829 tms470_flags(){
2830     for flag; do
2831         case $flag in
2832             -march=*|-mcpu=*)
2833                 case "${flag#*=}" in
2834                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2835                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2836                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2837                     armv6*|arm11*)          echo -mv=6   ;;
2838                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2839                                             echo -mv=5e  ;;
2840                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2841                 esac
2842                 ;;
2843             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2844             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2845             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2846             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2847             -msoft-float)   echo --float_support=vfplib       ;;
2848             -O[0-3]|-mf=*)  echo $flag                        ;;
2849             -g)             echo -g -mn                       ;;
2850             -pds=*)         echo $flag                        ;;
2851             -D*|-I*)        echo $flag                        ;;
2852             --gcc|--abi=*)  echo $flag                        ;;
2853             -me)            echo $flag                        ;;
2854         esac
2855     done
2856 }
2857
2858 probe_cc(){
2859     pfx=$1
2860     _cc=$2
2861
2862     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2863     unset _ld_o _ldflags _ld_lib _ld_path
2864     unset _depflags _DEPCMD _DEPFLAGS
2865     _flags_filter=echo
2866
2867     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2868         _type=llvm_gcc
2869         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2870         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2871         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2872         _cflags_speed='-O3'
2873         _cflags_size='-Os'
2874     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2875         _type=gcc
2876         gcc_version=$($_cc --version | head -n1)
2877         gcc_basever=$($_cc -dumpversion)
2878         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2879         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2880         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2881         if ! $_cc -dumpversion | grep -q '^2\.'; then
2882             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2883         fi
2884         _cflags_speed='-O3'
2885         _cflags_size='-Os'
2886     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2887         _type=icc
2888         _ident=$($_cc --version | head -n1)
2889         _depflags='-MMD'
2890         _cflags_speed='-O3'
2891         _cflags_size='-Os'
2892         _cflags_noopt='-O1'
2893     elif $_cc -v 2>&1 | grep -q xlc; then
2894         _type=xlc
2895         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2896         _cflags_speed='-O5'
2897         _cflags_size='-O5 -qcompact'
2898     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2899         _type=ccc
2900         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2901         _DEPFLAGS='-M'
2902         _cflags_speed='-fast'
2903         _cflags_size='-O1'
2904         _flags_filter=ccc_flags
2905     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2906         test -d "$sysroot" || die "No valid sysroot specified."
2907         _type=armcc
2908         _ident=$($_cc --vsn | head -n1)
2909         armcc_conf="$PWD/armcc.conf"
2910         $_cc --arm_linux_configure                 \
2911              --arm_linux_config_file="$armcc_conf" \
2912              --configure_sysroot="$sysroot"        \
2913              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2914              die "Error creating armcc configuration file."
2915         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2916         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2917         as_default="${cross_prefix}gcc"
2918         _depflags='-MMD'
2919         _cflags_speed='-O3'
2920         _cflags_size='-Os'
2921     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2922         _type=tms470
2923         _ident=$($_cc -version | head -n1 | tr -s ' ')
2924         _flags='--gcc --abi=eabi -me'
2925         _cc_e='-ppl -fe=$@'
2926         _cc_o='-fe=$@'
2927         _depflags='-ppa -ppd=$(@:.o=.d)'
2928         _cflags_speed='-O3 -mf=5'
2929         _cflags_size='-O3 -mf=2'
2930         _flags_filter=tms470_flags
2931     elif $_cc -v 2>&1 | grep -q clang; then
2932         _type=clang
2933         _ident=$($_cc --version | head -n1)
2934         _depflags='-MMD'
2935         _cflags_speed='-O3'
2936         _cflags_size='-Os'
2937     elif $_cc -V 2>&1 | grep -q Sun; then
2938         _type=suncc
2939         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2940         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2941         _DEPFLAGS='-xM1 -xc99'
2942         _ldflags='-std=c99'
2943         _cflags_speed='-O5'
2944         _cflags_size='-O5 -xspace'
2945         _flags_filter=suncc_flags
2946     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2947         _type=pathscale
2948         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2949         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2950         _cflags_speed='-O2'
2951         _cflags_size='-Os'
2952         _flags_filter='filter_out -Wdisabled-optimization'
2953     elif $_cc -v 2>&1 | grep -q Open64; then
2954         _type=open64
2955         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2956         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2957         _cflags_speed='-O2'
2958         _cflags_size='-Os'
2959         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2960     elif $_cc -V 2>&1 | grep -q Portland; then
2961         _type=pgi
2962         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2963         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2964         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2965         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2966         _cflags_noopt="-O"
2967         _flags_filter=pgi_flags
2968     elif $_cc 2>&1 | grep -q Microsoft; then
2969         _type=msvc
2970         _ident=$($cc 2>&1 | head -n1)
2971         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2972         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2973         _cflags_speed="-O2"
2974         _cflags_size="-O1"
2975         # Nonstandard output options, to avoid msys path conversion issues.
2976         # Relies on wrapper to remap it.
2977         if $_cc 2>&1 | grep -q Linker; then
2978             _ld_o='-out $@'
2979         else
2980             _ld_o='-Fe$@'
2981         fi
2982         _cc_o='-Fo $@'
2983         _cc_e='-P -Fi $@'
2984         _flags_filter=msvc_flags
2985         _ld_lib='lib%.a'
2986         _ld_path='-libpath:'
2987         _flags='-nologo'
2988         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2989         if [ $pfx = hostcc ]; then
2990             append _cflags -Dsnprintf=_snprintf
2991         fi
2992         disable stripping
2993     elif $_cc 2>&1 | grep -q Intel; then
2994         _type=icl
2995         _ident=$($cc 2>&1 | head -n1)
2996         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2997         # Not only is O3 broken on 13.x+ but it is slower on all previous
2998         # versions (tested) as well.
2999         _cflags_speed="-O2"
3000         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3001         # Nonstandard output options, to avoid msys path conversion issues.
3002         # Relies on wrapper to remap it.
3003         if $_cc 2>&1 | grep -q Linker; then
3004             _ld_o='-out $@'
3005         else
3006             _ld_o='-Fe$@'
3007         fi
3008         _cc_o='-Fo $@'
3009         _cc_e='-P'
3010         _flags_filter=icl_flags
3011         _ld_lib='lib%.a'
3012         _ld_path='-libpath:'
3013         # -Qdiag-error to make icl error when seeing certain unknown arguments
3014         _flags='-nologo -Qdiag-error:4044,10157'
3015         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3016         # with MSVC which enables it by default.
3017         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3018         if [ $pfx = hostcc ]; then
3019             append _cflags -Dsnprintf=_snprintf
3020         fi
3021     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3022         _type=cparser
3023         _ident=$($_cc --version | head -n1)
3024         _depflags='-MMD'
3025         _cflags_speed='-O4'
3026         _cflags_size='-O2'
3027         _flags_filter=cparser_flags
3028     fi
3029
3030     eval ${pfx}_type=\$_type
3031     eval ${pfx}_ident=\$_ident
3032 }
3033
3034 set_ccvars(){
3035     eval ${1}_C=\${_cc_c-\${${1}_C}}
3036     eval ${1}_E=\${_cc_e-\${${1}_E}}
3037     eval ${1}_O=\${_cc_o-\${${1}_O}}
3038
3039     if [ -n "$_depflags" ]; then
3040         eval ${1}_DEPFLAGS=\$_depflags
3041     else
3042         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3043         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3044         eval DEP${1}FLAGS=\$_flags
3045     fi
3046 }
3047
3048 probe_cc cc "$cc"
3049 cflags_filter=$_flags_filter
3050 cflags_speed=$_cflags_speed
3051 cflags_size=$_cflags_size
3052 cflags_noopt=$_cflags_noopt
3053 add_cflags $_flags $_cflags
3054 cc_ldflags=$_ldflags
3055 set_ccvars CC
3056
3057 probe_cc hostcc "$host_cc"
3058 host_cflags_filter=$_flags_filter
3059 add_host_cflags  $_flags $_cflags
3060 set_ccvars HOSTCC
3061
3062 test -n "$cc_type" && enable $cc_type ||
3063     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3064
3065 : ${as_default:=$cc}
3066 : ${dep_cc_default:=$cc}
3067 : ${ld_default:=$cc}
3068 : ${host_ld_default:=$host_cc}
3069 set_default ar as dep_cc ld host_ld
3070
3071 probe_cc as "$as"
3072 asflags_filter=$_flags_filter
3073 add_asflags $_flags $_cflags
3074 set_ccvars AS
3075
3076 probe_cc ld "$ld"
3077 ldflags_filter=$_flags_filter
3078 add_ldflags $_flags $_ldflags
3079 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3080 LD_O=${_ld_o-$LD_O}
3081 LD_LIB=${_ld_lib-$LD_LIB}
3082 LD_PATH=${_ld_path-$LD_PATH}
3083
3084 probe_cc hostld "$host_ld"
3085 host_ldflags_filter=$_flags_filter
3086 add_host_ldflags $_flags $_ldflags
3087 HOSTLD_O=${_ld_o-$HOSTLD_O}
3088
3089 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3090     probe_cc depcc "$dep_cc"
3091     CCDEP=${_DEPCMD:-$DEPCMD}
3092     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3093     DEPCCFLAGS=$_flags
3094 fi
3095
3096 if $ar 2>&1 | grep -q Microsoft; then
3097     arflags="-nologo"
3098     ar_o='-out:$@'
3099 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3100     arflags="rq"
3101     ar_o='$@'
3102 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3103     arflags='-Xany -r -c'
3104     ar_o='$@'
3105 else
3106     arflags="rc"
3107     ar_o='$@'
3108 fi
3109
3110 add_cflags $extra_cflags
3111 add_cxxflags $extra_cxxflags
3112 add_asflags $extra_cflags
3113
3114 if test -n "$sysroot"; then
3115     case "$cc_type" in
3116         gcc|llvm_gcc|clang)
3117             add_cppflags --sysroot="$sysroot"
3118             add_ldflags --sysroot="$sysroot"
3119         ;;
3120         tms470)
3121             add_cppflags -I"$sysinclude"
3122             add_ldflags  --sysroot="$sysroot"
3123         ;;
3124     esac
3125 fi
3126
3127 if test "$cpu" = host; then
3128     enabled cross_compile &&
3129         die "--cpu=host makes no sense when cross-compiling."
3130
3131     case "$cc_type" in
3132         gcc|llvm_gcc)
3133             check_native(){
3134                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3135                 sed -n "/cc1.*$1=/{
3136                             s/.*$1=\\([^ ]*\\).*/\\1/
3137                             p
3138                             q
3139                         }" $TMPE
3140             }
3141             cpu=$(check_native -march || check_native -mcpu)
3142         ;;
3143     esac
3144
3145     test "${cpu:-host}" = host &&
3146         die "--cpu=host not supported with compiler $cc"
3147 fi
3148
3149 # Deal with common $arch aliases
3150 case "$arch" in
3151     aarch64|arm64)
3152         arch="aarch64"
3153     ;;
3154     arm*|iPad*|iPhone*)
3155         arch="arm"
3156     ;;
3157     mips*|IP*)
3158         arch="mips"
3159     ;;
3160     parisc*|hppa*)
3161         arch="parisc"
3162     ;;
3163     "Power Macintosh"|ppc*|powerpc*)
3164         arch="ppc"
3165     ;;
3166     s390|s390x)
3167         arch="s390"
3168     ;;
3169     sh4|sh)
3170         arch="sh4"
3171     ;;
3172     sun4u|sparc*)
3173         arch="sparc"
3174     ;;
3175     tilegx|tile-gx)
3176         arch="tilegx"
3177     ;;
3178     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3179         arch="x86"
3180     ;;
3181 esac
3182
3183 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3184 enable $arch
3185
3186 # Add processor-specific flags
3187 if enabled aarch64; then
3188
3189     case $cpu in
3190         armv*)
3191             cpuflags="-march=$cpu"
3192         ;;
3193         *)
3194             cpuflags="-mcpu=$cpu"
3195         ;;
3196     esac
3197
3198 elif enabled alpha; then
3199
3200     cpuflags="-mcpu=$cpu"
3201
3202 elif enabled arm; then
3203
3204     check_arm_arch() {
3205         check_cpp_condition stddef.h \
3206             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3207             $cpuflags
3208     }
3209
3210     probe_arm_arch() {
3211         if   check_arm_arch 4;        then echo armv4;
3212         elif check_arm_arch 4T;       then echo armv4t;
3213         elif check_arm_arch 5;        then echo armv5;
3214         elif check_arm_arch 5E;       then echo armv5e;
3215         elif check_arm_arch 5T;       then echo armv5t;
3216         elif check_arm_arch 5TE;      then echo armv5te;
3217         elif check_arm_arch 5TEJ;     then echo armv5te;
3218         elif check_arm_arch 6;        then echo armv6;
3219         elif check_arm_arch 6J;       then echo armv6j;
3220         elif check_arm_arch 6K;       then echo armv6k;
3221         elif check_arm_arch 6Z;       then echo armv6z;
3222         elif check_arm_arch 6ZK;      then echo armv6zk;
3223         elif check_arm_arch 6T2;      then echo armv6t2;
3224         elif check_arm_arch 7;        then echo armv7;
3225         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3226         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3227         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3228         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3229         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3230         fi
3231     }
3232
3233     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3234
3235     case $cpu in
3236         armv*)
3237             cpuflags="-march=$cpu"
3238             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3239         ;;
3240         *)
3241             cpuflags="-mcpu=$cpu"
3242             case $cpu in
3243                 cortex-a*)                               subarch=armv7a  ;;
3244                 cortex-r*)                               subarch=armv7r  ;;
3245                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3246                 arm11*)                                  subarch=armv6   ;;
3247                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3248                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3249                 *)                             subarch=$(probe_arm_arch) ;;
3250             esac
3251         ;;
3252     esac
3253
3254     case "$subarch" in
3255         armv5t*)    enable fast_clz                ;;
3256         armv[6-8]*) enable fast_clz fast_unaligned ;;
3257     esac
3258
3259 elif enabled avr32; then
3260
3261     case $cpu in
3262         ap7[02]0[0-2])
3263             subarch="avr32_ap"
3264             cpuflags="-mpart=$cpu"
3265         ;;
3266         ap)
3267             subarch="avr32_ap"
3268             cpuflags="-march=$cpu"
3269         ;;
3270         uc3[ab]*)
3271             subarch="avr32_uc"
3272             cpuflags="-mcpu=$cpu"
3273         ;;
3274         uc)
3275             subarch="avr32_uc"
3276             cpuflags="-march=$cpu"
3277         ;;
3278     esac
3279
3280 elif enabled bfin; then
3281
3282     cpuflags="-mcpu=$cpu"
3283
3284 elif enabled mips; then
3285
3286     cpuflags="-march=$cpu"
3287
3288     case $cpu in
3289         24kc)
3290             disable mipsfpu
3291             disable mipsdspr1
3292             disable mipsdspr2
3293         ;;
3294         24kf*)
3295             disable mipsdspr1
3296             disable mipsdspr2
3297         ;;
3298         24kec|34kc|1004kc)
3299             disable mipsfpu
3300             disable mipsdspr2
3301         ;;
3302         24kef*|34kf*|1004kf*)
3303             disable mipsdspr2
3304         ;;
3305         74kc)
3306             disable mipsfpu
3307         ;;
3308     esac
3309
3310 elif enabled ppc; then
3311
3312     case $(tolower $cpu) in
3313         601|ppc601|powerpc601)
3314             cpuflags="-mcpu=601"
3315             disable altivec
3316         ;;
3317         603*|ppc603*|powerpc603*)
3318             cpuflags="-mcpu=603"
3319             disable altivec
3320         ;;
3321         604*|ppc604*|powerpc604*)
3322             cpuflags="-mcpu=604"
3323             disable altivec
3324         ;;
3325         g3|75*|ppc75*|powerpc75*)
3326             cpuflags="-mcpu=750"
3327             disable altivec
3328         ;;
3329         g4|745*|ppc745*|powerpc745*)
3330             cpuflags="-mcpu=7450"
3331         ;;
3332         74*|ppc74*|powerpc74*)
3333             cpuflags="-mcpu=7400"
3334         ;;
3335         g5|970|ppc970|powerpc970)
3336             cpuflags="-mcpu=970"
3337         ;;
3338         power[3-7]*)
3339             cpuflags="-mcpu=$cpu"
3340         ;;
3341         cell)
3342             cpuflags="-mcpu=cell"
3343             enable ldbrx
3344         ;;
3345         e500mc)
3346             cpuflags="-mcpu=e500mc"
3347             disable altivec
3348         ;;
3349         e500v2)
3350             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3351             disable altivec
3352         ;;
3353         e500)
3354             cpuflags="-mcpu=8540 -mhard-float"
3355             disable altivec
3356         ;;
3357     esac
3358
3359 elif enabled sparc; then
3360
3361     case $cpu in
3362         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3363             cpuflags="-mcpu=$cpu"
3364             disable vis
3365         ;;
3366         ultrasparc*|niagara[234])
3367             cpuflags="-mcpu=$cpu"
3368         ;;
3369     esac
3370
3371 elif enabled x86; then
3372
3373     case $cpu in
3374         i[345]86|pentium)
3375             cpuflags="-march=$cpu"
3376             disable mmx
3377         ;;
3378         # targets that do NOT support nopl and conditional mov (cmov)
3379         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3380             cpuflags="-march=$cpu"
3381             disable i686
3382         ;;
3383         # targets that do support nopl and conditional mov (cmov)
3384         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3385             cpuflags="-march=$cpu"
3386             enable i686
3387             enable fast_cmov
3388         ;;
3389         # targets that do support conditional mov but on which it's slow
3390         pentium4|pentium4m|prescott|nocona)
3391             cpuflags="-march=$cpu"
3392             enable i686
3393             disable fast_cmov
3394         ;;
3395     esac
3396
3397 fi
3398
3399 if [ "$cpu" != generic ]; then
3400     add_cflags  $cpuflags
3401     add_asflags $cpuflags
3402 fi
3403
3404 # compiler sanity check
3405 check_exec <<EOF
3406 int main(void){ return 0; }
3407 EOF
3408 if test "$?" != 0; then
3409     echo "$cc is unable to create an executable file."
3410     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3411         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3412         echo "Only do this if you know what cross compiling means."
3413     fi
3414     die "C compiler test failed."
3415 fi
3416
3417 add_cppflags -D_ISOC99_SOURCE
3418 add_cxxflags -D__STDC_CONSTANT_MACROS
3419 check_cflags -std=c99
3420 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3421 #include <stdlib.h>
3422 EOF
3423 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3424 #include <stdlib.h>
3425 EOF
3426
3427 check_host_cflags -std=c99
3428 check_host_cflags -Wall
3429
3430 check_64bit(){
3431     arch32=$1
3432     arch64=$2
3433     expr=$3
3434     check_code cc "" "int test[2*($expr) - 1]" &&
3435         subarch=$arch64 || subarch=$arch32
3436 }
3437
3438 case "$arch" in
3439     aarch64|alpha|ia64)
3440         spic=$shared
3441     ;;
3442     mips)
3443         check_64bit mips mips64 '_MIPS_SIM > 1'
3444         spic=$shared
3445     ;;
3446     parisc)
3447         check_64bit parisc parisc64 'sizeof(void *) > 4'
3448         spic=$shared
3449     ;;
3450     ppc)
3451         check_64bit ppc ppc64 'sizeof(void *) > 4'
3452         spic=$shared
3453     ;;
3454     sparc)
3455         check_64bit sparc sparc64 'sizeof(void *) > 4'
3456         spic=$shared
3457     ;;
3458     x86)
3459         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3460         if test "$subarch" = "x86_64"; then
3461             spic=$shared
3462         fi
3463     ;;
3464     ppc)
3465         check_cc <<EOF && subarch="ppc64"
3466         int test[(int)sizeof(char*) - 7];
3467 EOF
3468     ;;
3469 esac
3470
3471 enable $subarch
3472 enabled spic && enable_weak pic
3473
3474 # OS specific
3475 case $target_os in
3476     aix)
3477         SHFLAGS=-shared
3478         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3479         enabled shared && add_ldflags -Wl,-brtl
3480         ;;
3481     haiku)
3482         prefix_default="/boot/common"
3483         network_extralibs="-lnetwork"
3484         host_libs=
3485         ;;
3486     sunos)
3487         SHFLAGS='-shared -Wl,-h,$$(@F)'
3488         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3489         network_extralibs="-lsocket -lnsl"
3490         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3491         # When using suncc to build, the Solaris linker will mark
3492         # an executable with each instruction set encountered by
3493         # the Solaris assembler.  As our libraries contain their own
3494         # guards for processor-specific code, instead suppress
3495         # generation of the HWCAPS ELF section on Solaris x86 only.
3496         enabled_all suncc x86 &&
3497             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3498             add_ldflags -Wl,-M,mapfile
3499         nm_default='nm -P -g'
3500         ;;
3501     netbsd)
3502         disable symver
3503         oss_indev_extralibs="-lossaudio"
3504         oss_outdev_extralibs="-lossaudio"
3505         enabled gcc || check_ldflags -Wl,-zmuldefs
3506         ;;
3507     openbsd|bitrig)
3508         disable symver
3509         SHFLAGS='-shared'
3510         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3511         SLIB_INSTALL_LINKS=
3512         oss_indev_extralibs="-lossaudio"
3513         oss_outdev_extralibs="-lossaudio"
3514         ;;
3515     dragonfly)
3516         disable symver
3517         ;;
3518     freebsd)
3519         ;;
3520     bsd/os)
3521         add_extralibs -lpoll -lgnugetopt
3522         strip="strip -d"
3523         ;;
3524     darwin)
3525         gas="gas-preprocessor.pl $cc"
3526         enabled ppc && add_asflags -force_cpusubtype_ALL
3527         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3528         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3529         strip="${strip} -x"
3530         add_ldflags -Wl,-dynamic,-search_paths_first
3531         SLIBSUF=".dylib"
3532         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3533         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3534         objformat="macho"
3535         enabled x86_64 && objformat="macho64"
3536         enabled_any pic shared ||
3537             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3538         ;;
3539     mingw32*)
3540         if test $target_os = "mingw32ce"; then
3541             disable network
3542         else
3543             target_os=mingw32
3544         fi
3545         LIBTARGET=i386
3546         if enabled x86_64; then
3547             LIBTARGET="i386:x86-64"
3548         elif enabled arm; then
3549             LIBTARGET=arm-wince
3550         fi
3551         check_ldflags -Wl,--nxcompat
3552         check_ldflags -Wl,--dynamicbase
3553         shlibdir_default="$bindir_default"
3554         SLIBPREF=""
3555         SLIBSUF=".dll"
3556         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3557         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3558         dlltool="${cross_prefix}dlltool"
3559         if check_cmd lib.exe -list; then
3560             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3561             if enabled x86_64; then
3562                 LIBTARGET=x64
3563             fi
3564         elif check_cmd $dlltool --version; then
3565             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3566         fi
3567         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3568         SLIB_INSTALL_LINKS=
3569         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3570         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3571         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3572         objformat="win32"
3573         ranlib=:
3574         enable dos_paths
3575         ;;
3576     win32|win64)
3577         if enabled shared; then
3578             # Link to the import library instead of the normal static library
3579             # for shared libs.
3580             LD_LIB='%.lib'
3581             # Cannot build both shared and static libs with MSVC or icl.
3582             disable static
3583         fi
3584         shlibdir_default="$bindir_default"
3585         SLIBPREF=""
3586         SLIBSUF=".dll"
3587         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3588         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3589         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3590         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3591         SLIB_INSTALL_LINKS=
3592         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3593         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3594         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3595         objformat="win32"
3596         ranlib=:
3597         enable dos_paths
3598         ;;
3599     cygwin*)
3600         target_os=cygwin
3601         shlibdir_default="$bindir_default"
3602         SLIBPREF="cyg"
3603         SLIBSUF=".dll"
3604         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3605         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3606         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3607         SLIB_INSTALL_LINKS=
3608         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3609         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3610         objformat="win32"
3611         enable dos_paths
3612         ;;
3613     *-dos|freedos|opendos)
3614         network_extralibs="-lsocket"
3615         objformat="coff"
3616         enable dos_paths
3617         add_cppflags -U__STRICT_ANSI__
3618         ;;
3619     linux)
3620         enable dv1394
3621         ;;
3622     irix*)
3623         target_os=irix
3624         ranlib="echo ignoring ranlib"
3625         ;;
3626     os/2*)
3627         strip="lxlite -CS"
3628         ln_s="cp -f"
3629         objformat="aout"
3630         add_cppflags -D_GNU_SOURCE
3631         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3632         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3633         LIBSUF="_s.a"
3634         SLIBPREF=""
3635         SLIBSUF=".dll"
3636         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3637         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3638         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3639             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3640             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3641             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3642             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3643             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3644         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3645             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3646         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3647         enable dos_paths
3648         enable_weak os2threads
3649         ;;
3650     gnu/kfreebsd)
3651         add_cppflags -D_BSD_SOURCE
3652         ;;
3653     gnu)
3654         ;;
3655     qnx)
3656         add_cppflags -D_QNX_SOURCE
3657         network_extralibs="-lsocket"
3658         ;;
3659     symbian)
3660         SLIBSUF=".dll"
3661         enable dos_paths
3662         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3663         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3664         add_ldflags -Wl,--target1-abs,--no-undefined \
3665                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3666                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3667         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3668                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3669                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3670         ;;
3671     osf1)
3672         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3673         ;;
3674     minix)
3675         ;;
3676     plan9)
3677         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3678                      -D_REENTRANT_SOURCE        \
3679                      -D_RESEARCH_SOURCE         \
3680                      -DFD_SETSIZE=96            \
3681                      -DHAVE_SOCK_OPTS
3682         add_compat strtod.o strtod=avpriv_strtod
3683         network_extralibs='-lbsd'
3684         exeobjs=compat/plan9/main.o
3685         disable ffserver
3686         cp_f='cp'
3687         ;;
3688     none)
3689         ;;
3690     *)
3691         die "Unknown OS '$target_os'."
3692         ;;
3693 esac
3694
3695 # determine libc flavour
3696
3697 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3698 if check_cpp_condition features.h "defined __UCLIBC__"; then
3699     libc_type=uclibc
3700     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3701 elif check_cpp_condition features.h "defined __GLIBC__"; then
3702     libc_type=glibc
3703     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3704 # MinGW headers can be installed on Cygwin, so check for newlib first.
3705 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3706     libc_type=newlib
3707     add_cppflags -U__STRICT_ANSI__
3708 elif check_header _mingw.h; then
3709     libc_type=mingw
3710     check_cpp_condition _mingw.h \
3711         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3712             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3713         die "ERROR: MinGW runtime version must be >= 3.15."
3714     add_cppflags -U__STRICT_ANSI__
3715     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3716             __MINGW64_VERSION_MAJOR < 3"; then
3717         add_compat msvcrt/snprintf.o
3718         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3719     else
3720         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3721     fi
3722 elif check_func_headers stdlib.h _get_doserrno; then
3723     libc_type=msvcrt
3724     add_compat strtod.o strtod=avpriv_strtod
3725     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3726                                  _snprintf=avpriv_snprintf  \
3727                                  vsnprintf=avpriv_vsnprintf
3728     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3729     # 0x601 by default unless something else is set by the user.
3730     # This can easily lead to us detecting functions only present
3731     # in such new versions and producing binaries requiring windows 7.0.
3732     # Therefore explicitly set the default to XP unless the user has
3733     # set something else on the command line.
3734     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3735 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3736     libc_type=klibc
3737 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3738     libc_type=bionic
3739     add_compat strtod.o strtod=avpriv_strtod
3740 fi
3741
3742 test -n "$libc_type" && enable $libc_type
3743
3744 # hacks for compiler/libc/os combinations
3745
3746 if enabled_all tms470 glibc; then
3747     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3748     add_cppflags -D__USER_LABEL_PREFIX__=
3749     add_cppflags -D__builtin_memset=memset
3750     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3751     add_cflags   -pds=48    # incompatible redefinition of macro
3752 fi
3753
3754 if enabled_all ccc glibc; then
3755     add_ldflags -Wl,-z,now  # calls to libots crash without this
3756 fi
3757
3758 esc(){
3759     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3760 }
3761
3762 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3763
3764 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3765
3766 set_default $PATHS_LIST
3767 set_default nm
3768
3769 # we need to build at least one lib type
3770 if ! enabled_any static shared; then
3771     cat <<EOF
3772 At least one library type must be built.
3773 Specify --enable-static to build the static libraries or --enable-shared to
3774 build the shared libraries as well. To only build the shared libraries specify
3775 --disable-static in addition to --enable-shared.
3776 EOF
3777     exit 1;
3778 fi
3779
3780 # backward compatibility layer for incompatible_libav/fork_abi
3781 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3782 enabled incompatible_libav_abi && enable incompatible_fork_abi
3783
3784 die_license_disabled() {
3785     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3786 }
3787
3788 die_license_disabled_gpl() {
3789     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3790 }
3791
3792 die_license_disabled gpl frei0r
3793 die_license_disabled gpl libcdio
3794 die_license_disabled gpl libutvideo
3795 die_license_disabled gpl libvidstab
3796 die_license_disabled gpl libx264
3797 die_license_disabled gpl libxavs
3798 die_license_disabled gpl libxvid
3799 die_license_disabled gpl libzvbi
3800 die_license_disabled gpl x11grab
3801
3802 die_license_disabled nonfree libaacplus
3803 die_license_disabled nonfree libfaac
3804 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3805 enabled gpl && die_license_disabled_gpl nonfree openssl
3806
3807 die_license_disabled version3 libopencore_amrnb
3808 die_license_disabled version3 libopencore_amrwb
3809 die_license_disabled version3 libvo_aacenc
3810 die_license_disabled version3 libvo_amrwbenc
3811
3812 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3813
3814 disabled optimizations || check_cflags -fomit-frame-pointer
3815
3816 enable_weak_pic() {
3817     disabled pic && return
3818     enable pic
3819     add_cppflags -DPIC
3820     case "$target_os" in
3821     mingw*|cygwin*)
3822         ;;
3823     *)
3824         add_cflags -fPIC
3825         ;;
3826     esac
3827     add_asflags  -fPIC
3828 }
3829
3830 enabled pic && enable_weak_pic
3831
3832 check_cc <<EOF || die "Symbol mangling check failed."
3833 int ff_extern;
3834 EOF
3835 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3836 extern_prefix=${sym%%ff_extern*}
3837
3838 check_cc <<EOF && enable_weak inline_asm
3839 void foo(void) { __asm__ volatile ("" ::); }
3840 EOF
3841
3842 _restrict=
3843 for restrict_keyword in restrict __restrict__ __restrict; do
3844     check_cc <<EOF && _restrict=$restrict_keyword && break
3845 void foo(char * $restrict_keyword p);
3846 EOF
3847 done
3848
3849 check_cc <<EOF && enable pragma_deprecated
3850 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3851 EOF
3852
3853 check_cc <<EOF && enable attribute_packed
3854 struct { int x; } __attribute__((packed)) x;
3855 EOF
3856
3857 check_cc <<EOF && enable attribute_may_alias
3858 union { int x; } __attribute__((may_alias)) x;
3859 EOF
3860
3861 check_cc <<EOF || die "endian test failed"
3862 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3863 EOF
3864 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3865
3866 check_inline_asm inline_asm_labels '"1:\n"'
3867
3868 if enabled alpha; then
3869
3870     check_cflags -mieee
3871
3872 elif enabled arm; then
3873
3874     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3875 float func(float a, float b){ return a+b; }
3876 EOF
3877
3878     enabled thumb && check_cflags -mthumb || check_cflags -marm
3879     nogas=die
3880
3881     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3882         enable vfp_args
3883     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3884         case "${cross_prefix:-$cc}" in
3885             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3886             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3887 __asm__ (".eabi_attribute 28, 1");
3888 int main(void) { return 0; }
3889 EOF
3890         esac
3891         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3892     fi
3893
3894     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3895     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3896     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3897     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3898     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3899     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3900
3901     [ $target_os = linux ] ||
3902         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3903             $ARCH_EXT_LIST_ARM
3904
3905     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3906     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3907
3908     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3909
3910 elif enabled mips; then
3911
3912     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3913     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3914      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3915     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3916      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3917     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3918      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3919     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3920      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3921
3922 elif enabled parisc; then
3923
3924     if enabled gcc; then
3925         case $($cc -dumpversion) in
3926             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3927         esac
3928     fi
3929
3930 elif enabled ppc; then
3931
3932     enable local_aligned_8 local_aligned_16
3933
3934     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3935     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3936     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3937     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3938
3939     # AltiVec flags: The FSF version of GCC differs from the Apple version
3940     if enabled altivec; then
3941         if ! enabled_any pic ppc64; then
3942             nogas=warn
3943         fi
3944         check_cflags -maltivec -mabi=altivec &&
3945         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3946         check_cflags -faltivec
3947
3948         # check if our compiler supports Motorola AltiVec C API
3949         check_cc <<EOF || disable altivec
3950 $inc_altivec_h
3951 int main(void) {
3952     vector signed int v1 = (vector signed int) { 0 };
3953     vector signed int v2 = (vector signed int) { 1 };
3954     v1 = vec_add(v1, v2);
3955     return 0;
3956 }
3957 EOF
3958
3959         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3960     fi
3961
3962 elif enabled sparc; then
3963
3964     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3965
3966 elif enabled x86; then
3967
3968     check_builtin rdtsc    intrin.h   "__rdtsc()"
3969     check_builtin mm_empty mmintrin.h "_mm_empty()"
3970
3971     enable local_aligned_8 local_aligned_16
3972
3973     # check whether EBP is available on x86
3974     # As 'i' is stored on the stack, this program will crash
3975     # if the base pointer is used to access it because the
3976     # base pointer is cleared in the inline assembly code.
3977     check_exec_crash <<EOF && enable ebp_available
3978 volatile int i=0;
3979 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3980 return i;
3981 EOF
3982
3983     # check whether EBX is available on x86
3984     check_inline_asm ebx_available '""::"b"(0)' &&
3985         check_inline_asm ebx_available '"":::"%ebx"'
3986
3987     # check whether xmm clobbers are supported
3988     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3989
3990     # check whether binutils is new enough to compile SSSE3/MMXEXT
3991     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3992     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3993
3994     if ! disabled_any asm mmx yasm; then
3995         if check_cmd $yasmexe --version; then
3996             enabled x86_64 && yasm_extra="-m amd64"
3997             yasm_debug="-g dwarf2"
3998         elif check_cmd nasm -v; then
3999             yasmexe=nasm
4000             yasm_debug="-g -F dwarf"
4001             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4002         fi
4003
4004         YASMFLAGS="-f $objformat $yasm_extra"
4005         enabled pic               && append YASMFLAGS "-DPIC"
4006         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4007         case "$objformat" in
4008             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4009         esac
4010
4011         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
4012             die "yasm not found, use --disable-yasm for a crippled build"
4013         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4014         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4015         check_yasm "CPU amdnop" && enable cpunop
4016     fi
4017
4018     case "$cpu" in
4019         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4020             disable fast_clz
4021         ;;
4022     esac
4023
4024 fi
4025
4026 if enabled asm; then
4027     as=${gas:=$as}
4028     check_as <<EOF && enable gnu_as || \
4029         $nogas "GNU assembler not found, install gas-preprocessor"
4030 .macro m n
4031 \n: .int 0
4032 .endm
4033 m x
4034 EOF
4035 fi
4036
4037 check_ldflags -Wl,--as-needed
4038
4039 if check_func dlopen; then
4040     ldl=