Fix standalone compilation of the amv encoder.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembly optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembly
342   --disable-yasm           disable use of nasm/yasm assembly
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     vsx
1551 "
1552
1553 ARCH_EXT_LIST_X86="
1554     $ARCH_EXT_LIST_X86_SIMD
1555     cpunop
1556     i686
1557 "
1558
1559 ARCH_EXT_LIST="
1560     $ARCH_EXT_LIST_ARM
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     $ARCH_EXT_LIST_MIPS
1564     loongson
1565 "
1566
1567 ARCH_FEATURES="
1568     aligned_stack
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     local_aligned_8
1573     local_aligned_16
1574     local_aligned_32
1575 "
1576
1577 BUILTIN_LIST="
1578     atomic_cas_ptr
1579     machine_rw_barrier
1580     MemoryBarrier
1581     mm_empty
1582     rdtsc
1583     sarestart
1584     sync_val_compare_and_swap
1585 "
1586 HAVE_LIST_CMDLINE="
1587     inline_asm
1588     symver
1589     yasm
1590 "
1591
1592 HAVE_LIST_PUB="
1593     bigendian
1594     fast_unaligned
1595     incompatible_libav_abi
1596 "
1597
1598 HEADERS_LIST="
1599     alsa_asoundlib_h
1600     altivec_h
1601     arpa_inet_h
1602     asm_types_h
1603     cdio_paranoia_h
1604     cdio_paranoia_paranoia_h
1605     CL_cl_h
1606     dev_bktr_ioctl_bt848_h
1607     dev_bktr_ioctl_meteor_h
1608     dev_ic_bt8xx_h
1609     dev_video_bktr_ioctl_bt848_h
1610     dev_video_meteor_ioctl_meteor_h
1611     direct_h
1612     dlfcn_h
1613     dxva_h
1614     ES2_gl_h
1615     gsm_h
1616     io_h
1617     mach_mach_time_h
1618     machine_ioctl_bt848_h
1619     machine_ioctl_meteor_h
1620     malloc_h
1621     openjpeg_1_5_openjpeg_h
1622     OpenGL_gl3_h
1623     poll_h
1624     sndio_h
1625     soundcard_h
1626     sys_mman_h
1627     sys_param_h
1628     sys_resource_h
1629     sys_select_h
1630     sys_soundcard_h
1631     sys_time_h
1632     sys_un_h
1633     sys_videoio_h
1634     termios_h
1635     unistd_h
1636     windows_h
1637     winsock2_h
1638 "
1639
1640 MATH_FUNCS="
1641     atanf
1642     atan2f
1643     cbrt
1644     cbrtf
1645     cosf
1646     exp2
1647     exp2f
1648     expf
1649     fminf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FUNCS="
1670     access
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     CoTaskMemFree
1676     CryptGenRandom
1677     dlopen
1678     fcntl
1679     flt_lim
1680     fork
1681     getaddrinfo
1682     gethrtime
1683     getopt
1684     GetProcessAffinityMask
1685     GetProcessMemoryInfo
1686     GetProcessTimes
1687     getrusage
1688     getservbyport
1689     GetSystemTimeAsFileTime
1690     gettimeofday
1691     glob
1692     glXGetProcAddress
1693     inet_aton
1694     isatty
1695     jack_port_get_latency_range
1696     kbhit
1697     localtime_r
1698     lzo1x_999_compress
1699     mach_absolute_time
1700     MapViewOfFile
1701     memalign
1702     mkstemp
1703     mmap
1704     mprotect
1705     nanosleep
1706     PeekNamedPipe
1707     posix_memalign
1708     pthread_cancel
1709     sched_getaffinity
1710     SetConsoleTextAttribute
1711     setmode
1712     setrlimit
1713     Sleep
1714     strerror_r
1715     sysconf
1716     sysctl
1717     usleep
1718     VirtualAlloc
1719     wglGetProcAddress
1720 "
1721
1722 TOOLCHAIN_FEATURES="
1723     as_dn_directive
1724     as_func
1725     asm_mod_q
1726     attribute_may_alias
1727     attribute_packed
1728     ebp_available
1729     ebx_available
1730     gnu_as
1731     gnu_windres
1732     ibm_asm
1733     inline_asm_labels
1734     inline_asm_nonlocal_labels
1735     inline_asm_direct_symbol_refs
1736     pragma_deprecated
1737     rsync_contimeout
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     socklen_t
1747     struct_addrinfo
1748     struct_group_source_req
1749     struct_ip_mreq_source
1750     struct_ipv6_mreq
1751     struct_pollfd
1752     struct_rusage_ru_maxrss
1753     struct_sctp_event_subscribe
1754     struct_sockaddr_in6
1755     struct_sockaddr_sa_len
1756     struct_sockaddr_storage
1757     struct_stat_st_mtim_tv_nsec
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $ATOMICS_LIST
1767     $BUILTIN_LIST
1768     $HAVE_LIST_CMDLINE
1769     $HAVE_LIST_PUB
1770     $HEADERS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FUNCS
1773     $THREADS_LIST
1774     $TOOLCHAIN_FEATURES
1775     $TYPES_LIST
1776     atomics_native
1777     dos_paths
1778     dxva2api_cobj
1779     dxva2_lib
1780     libc_msvcrt
1781     libdc1394_1
1782     libdc1394_2
1783     makeinfo
1784     perl
1785     pod2man
1786     sdl
1787     texi2html
1788     threads
1789     vdpau_x11
1790     xlib
1791 "
1792
1793 # options emitted with CONFIG_ prefix but not available on the command line
1794 CONFIG_EXTRA="
1795     aandcttables
1796     ac3dsp
1797     audio_frame_queue
1798     audiodsp
1799     blockdsp
1800     bswapdsp
1801     cabac
1802     dsputil
1803     exif
1804     frame_thread_encoder
1805     gcrypt
1806     golomb
1807     gplv3
1808     h263dsp
1809     h264chroma
1810     h264dsp
1811     h264pred
1812     h264qpel
1813     hpeldsp
1814     huffman
1815     huffyuvdsp
1816     huffyuvencdsp
1817     idctdsp
1818     intrax8
1819     lgplv3
1820     llauddsp
1821     llviddsp
1822     lpc
1823     mpeg_er
1824     mpegaudio
1825     mpegaudiodsp
1826     mpegvideo
1827     mpegvideoenc
1828     nettle
1829     qpeldsp
1830     rangecoder
1831     riffdec
1832     riffenc
1833     rtpdec
1834     rtpenc_chain
1835     sinewin
1836     tpeldsp
1837     videodsp
1838     vp3dsp
1839 "
1840
1841 CMDLINE_SELECT="
1842     $ARCH_EXT_LIST
1843     $CONFIG_LIST
1844     $HAVE_LIST_CMDLINE
1845     $THREADS_LIST
1846     asm
1847     cross_compile
1848     debug
1849     extra_warnings
1850     logging
1851     lto
1852     optimizations
1853     rpath
1854     stripping
1855 "
1856
1857 PATHS_LIST="
1858     bindir
1859     datadir
1860     docdir
1861     incdir
1862     libdir
1863     mandir
1864     prefix
1865     shlibdir
1866 "
1867
1868 CMDLINE_SET="
1869     $PATHS_LIST
1870     ar
1871     arch
1872     as
1873     assert_level
1874     build_suffix
1875     cc
1876     cpu
1877     cross_prefix
1878     cxx
1879     dep_cc
1880     extra_version
1881     gas
1882     host_cc
1883     host_cflags
1884     host_ld
1885     host_ldflags
1886     host_libs
1887     host_os
1888     install
1889     ld
1890     logfile
1891     malloc_prefix
1892     nm
1893     optflags
1894     pkg_config
1895     pkg_config_flags
1896     progs_suffix
1897     random_seed
1898     ranlib
1899     samples
1900     strip
1901     sws_max_filter_size
1902     sysinclude
1903     sysroot
1904     target_exec
1905     target_os
1906     target_path
1907     target_samples
1908     tempprefix
1909     toolchain
1910     valgrind
1911     yasmexe
1912 "
1913
1914 CMDLINE_APPEND="
1915     extra_cflags
1916     extra_cxxflags
1917     host_cppflags
1918 "
1919
1920 # code dependency declarations
1921
1922 # architecture extensions
1923
1924 armv5te_deps="arm"
1925 armv6_deps="arm"
1926 armv6t2_deps="arm"
1927 armv8_deps="aarch64"
1928 neon_deps_any="aarch64 arm"
1929 vfp_deps_any="aarch64 arm"
1930 vfpv3_deps="vfp"
1931
1932 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1933
1934 mipsfpu_deps="mips"
1935 mips32r2_deps="mips"
1936 mipsdspr1_deps="mips"
1937 mipsdspr2_deps="mips"
1938
1939 altivec_deps="ppc"
1940 ppc4xx_deps="ppc"
1941 vsx_deps="ppc"
1942
1943 cpunop_deps="i686"
1944 x86_64_select="i686"
1945 x86_64_suggest="fast_cmov"
1946
1947 amd3dnow_deps="mmx"
1948 amd3dnowext_deps="amd3dnow"
1949 i686_deps="x86"
1950 mmx_deps="x86"
1951 mmxext_deps="mmx"
1952 sse_deps="mmxext"
1953 sse2_deps="sse"
1954 sse3_deps="sse2"
1955 ssse3_deps="sse3"
1956 sse4_deps="ssse3"
1957 sse42_deps="sse4"
1958 avx_deps="sse42"
1959 xop_deps="avx"
1960 fma3_deps="avx"
1961 fma4_deps="avx"
1962 avx2_deps="avx"
1963
1964 mmx_external_deps="yasm"
1965 mmx_inline_deps="inline_asm"
1966 mmx_suggest="mmx_external mmx_inline"
1967
1968 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1969     eval dep=\$${ext}_deps
1970     eval ${ext}_external_deps='"${dep}_external"'
1971     eval ${ext}_inline_deps='"${dep}_inline"'
1972     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1973 done
1974
1975 aligned_stack_if_any="aarch64 ppc x86"
1976 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1977 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1978 fast_unaligned_if_any="aarch64 ppc x86"
1979
1980 need_memalign="altivec neon sse"
1981
1982 # system capabilities
1983
1984 symver_if_any="symver_asm_label symver_gnu_asm"
1985
1986 # threading support
1987 atomics_gcc_if="sync_val_compare_and_swap"
1988 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1989 atomics_win32_if="MemoryBarrier"
1990 atomics_native_if_any="$ATOMICS_LIST"
1991 w32threads_deps="atomics_native"
1992 threads_if_any="$THREADS_LIST"
1993
1994 # subsystems
1995 dct_select="rdft"
1996 dsputil_select="idctdsp"
1997 error_resilience_select="dsputil"
1998 frame_thread_encoder_deps="encoders threads"
1999 intrax8_select="error_resilience"
2000 mdct_select="fft"
2001 rdft_select="fft"
2002 mpeg_er_select="error_resilience"
2003 mpegaudio_select="mpegaudiodsp"
2004 mpegaudiodsp_select="dct"
2005 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2006 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2007
2008 # decoders / encoders
2009 aac_decoder_select="mdct sinewin"
2010 aac_encoder_select="audio_frame_queue mdct sinewin"
2011 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2012 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2013 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2014 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2015 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2016 aic_decoder_select="golomb idctdsp"
2017 alac_encoder_select="lpc"
2018 als_decoder_select="bswapdsp"
2019 amrnb_decoder_select="lsp"
2020 amrwb_decoder_select="lsp"
2021 amv_decoder_select="sp5x_decoder exif"
2022 amv_encoder_select="aandcttables mpegvideoenc"
2023 ape_decoder_select="bswapdsp llauddsp"
2024 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2025 asv1_encoder_select="bswapdsp dsputil"
2026 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2027 asv2_encoder_select="bswapdsp dsputil"
2028 atrac1_decoder_select="mdct sinewin"
2029 atrac3_decoder_select="mdct"
2030 atrac3p_decoder_select="mdct sinewin"
2031 avrn_decoder_select="exif"
2032 bink_decoder_select="blockdsp hpeldsp"
2033 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2034 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2035 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2036 cllc_decoder_select="bswapdsp"
2037 comfortnoise_encoder_select="lpc"
2038 cook_decoder_select="audiodsp mdct sinewin"
2039 cscd_decoder_select="lzo"
2040 cscd_decoder_suggest="zlib"
2041 dca_decoder_select="mdct"
2042 dirac_decoder_select="dsputil dwt golomb videodsp"
2043 dnxhd_decoder_select="blockdsp idctdsp"
2044 dnxhd_encoder_select="aandcttables blockdsp dsputil idctdsp mpegvideoenc"
2045 dvvideo_decoder_select="idctdsp"
2046 dvvideo_encoder_select="dsputil"
2047 dxa_decoder_select="zlib"
2048 eac3_decoder_select="ac3_decoder"
2049 eac3_encoder_select="ac3_encoder"
2050 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2051 eatgq_decoder_select="aandcttables"
2052 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2053 exr_decoder_select="zlib"
2054 ffv1_decoder_select="golomb rangecoder"
2055 ffv1_encoder_select="rangecoder"
2056 ffvhuff_decoder_select="huffyuv_decoder"
2057 ffvhuff_encoder_select="huffyuv_encoder"
2058 fic_decoder_select="golomb"
2059 flac_decoder_select="golomb"
2060 flac_encoder_select="bswapdsp golomb lpc"
2061 flashsv_decoder_select="zlib"
2062 flashsv_encoder_select="zlib"
2063 flashsv2_encoder_select="zlib"
2064 flashsv2_decoder_select="zlib"
2065 flv_decoder_select="h263_decoder"
2066 flv_encoder_select="h263_encoder"
2067 fourxm_decoder_select="blockdsp bswapdsp"
2068 fraps_decoder_select="bswapdsp huffman"
2069 g2m_decoder_select="blockdsp idctdsp zlib"
2070 g729_decoder_select="audiodsp"
2071 h261_decoder_select="mpeg_er mpegvideo"
2072 h261_encoder_select="aandcttables mpegvideoenc"
2073 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2074 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2075 h263i_decoder_select="h263_decoder"
2076 h263p_encoder_select="h263_encoder"
2077 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2078 h264_decoder_suggest="error_resilience"
2079 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2080 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2081 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2082 iac_decoder_select="imc_decoder"
2083 imc_decoder_select="bswapdsp fft mdct sinewin"
2084 indeo3_decoder_select="hpeldsp"
2085 interplay_video_decoder_select="hpeldsp"
2086 jpegls_decoder_select="golomb mjpeg_decoder"
2087 jpegls_encoder_select="golomb"
2088 jv_decoder_select="blockdsp"
2089 lagarith_decoder_select="huffyuvdsp"
2090 ljpeg_encoder_select="aandcttables idctdsp"
2091 loco_decoder_select="golomb"
2092 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2093 metasound_decoder_select="lsp mdct sinewin"
2094 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2095 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2096 mjpeg_encoder_select="aandcttables mpegvideoenc"
2097 mjpegb_decoder_select="mjpeg_decoder"
2098 mlp_decoder_select="mlp_parser"
2099 motionpixels_decoder_select="bswapdsp"
2100 mp1_decoder_select="mpegaudio"
2101 mp1float_decoder_select="mpegaudio"
2102 mp2_decoder_select="mpegaudio"
2103 mp2float_decoder_select="mpegaudio"
2104 mp3_decoder_select="mpegaudio"
2105 mp3adu_decoder_select="mpegaudio"
2106 mp3adufloat_decoder_select="mpegaudio"
2107 mp3float_decoder_select="mpegaudio"
2108 mp3on4_decoder_select="mpegaudio"
2109 mp3on4float_decoder_select="mpegaudio"
2110 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2111 mpc8_decoder_select="mpegaudiodsp"
2112 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2113 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2114 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2115 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2116 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2117 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2118 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2119 mpeg4_encoder_select="h263_encoder"
2120 msmpeg4v1_decoder_select="h263_decoder"
2121 msmpeg4v2_decoder_select="h263_decoder"
2122 msmpeg4v2_encoder_select="h263_encoder"
2123 msmpeg4v3_decoder_select="h263_decoder"
2124 msmpeg4v3_encoder_select="h263_encoder"
2125 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2126 mxpeg_decoder_select="mjpeg_decoder"
2127 nellymoser_decoder_select="mdct sinewin"
2128 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2129 nuv_decoder_select="idctdsp lzo"
2130 on2avc_decoder_select="mdct"
2131 opus_decoder_deps="swresample"
2132 png_decoder_select="zlib"
2133 png_encoder_select="huffyuvencdsp zlib"
2134 prores_decoder_select="blockdsp idctdsp"
2135 prores_encoder_select="dsputil"
2136 qcelp_decoder_select="lsp"
2137 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2138 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2139 ra_144_decoder_select="audiodsp"
2140 ralf_decoder_select="golomb"
2141 rawvideo_decoder_select="dsputil"
2142 rtjpeg_decoder_select="dsputil"
2143 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2144 rv10_encoder_select="h263_encoder"
2145 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2146 rv20_encoder_select="h263_encoder"
2147 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2148 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2149 shorten_decoder_select="golomb"
2150 sipr_decoder_select="lsp"
2151 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2152 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2153 sonic_decoder_select="golomb rangecoder"
2154 sonic_encoder_select="golomb rangecoder"
2155 sonic_ls_encoder_select="golomb rangecoder"
2156 sp5x_decoder_select="mjpeg_decoder"
2157 svq1_decoder_select="hpeldsp"
2158 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2159 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2160 svq3_decoder_suggest="zlib"
2161 tak_decoder_select="audiodsp"
2162 theora_decoder_select="vp3_decoder"
2163 thp_decoder_select="mjpeg_decoder"
2164 tiff_decoder_suggest="zlib"
2165 tiff_encoder_suggest="zlib"
2166 truehd_decoder_select="mlp_parser"
2167 truemotion2_decoder_select="bswapdsp"
2168 truespeech_decoder_select="bswapdsp"
2169 tscc_decoder_select="zlib"
2170 twinvq_decoder_select="mdct lsp sinewin"
2171 utvideo_decoder_select="bswapdsp"
2172 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2173 vble_decoder_select="huffyuvdsp"
2174 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2175 vc1image_decoder_select="vc1_decoder"
2176 vorbis_decoder_select="mdct"
2177 vorbis_encoder_select="mdct"
2178 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2179 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2180 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2181 vp6a_decoder_select="vp6_decoder"
2182 vp6f_decoder_select="vp6_decoder"
2183 vp7_decoder_select="h264pred videodsp"
2184 vp8_decoder_select="h264pred videodsp"
2185 vp9_decoder_select="videodsp vp9_parser"
2186 webp_decoder_select="vp8_decoder"
2187 wmalossless_decoder_select="llauddsp"
2188 wmapro_decoder_select="mdct sinewin"
2189 wmav1_decoder_select="mdct sinewin"
2190 wmav1_encoder_select="mdct sinewin"
2191 wmav2_decoder_select="mdct sinewin"
2192 wmav2_encoder_select="mdct sinewin"
2193 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2194 wmv1_decoder_select="h263_decoder"
2195 wmv1_encoder_select="h263_encoder"
2196 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2197 wmv2_encoder_select="h263_encoder"
2198 wmv3_decoder_select="vc1_decoder"
2199 wmv3image_decoder_select="wmv3_decoder"
2200 zerocodec_decoder_select="zlib"
2201 zlib_decoder_select="zlib"
2202 zlib_encoder_select="zlib"
2203 zmbv_decoder_select="zlib"
2204 zmbv_encoder_select="zlib"
2205
2206 # hardware accelerators
2207 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2208 dxva2_deps="dxva2api_h"
2209 vaapi_deps="va_va_h"
2210 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2211 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2212 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2213 xvmc_deps="X11_extensions_XvMClib_h"
2214
2215 h263_vaapi_hwaccel_deps="vaapi"
2216 h263_vaapi_hwaccel_select="h263_decoder"
2217 h263_vdpau_hwaccel_deps="vdpau"
2218 h263_vdpau_hwaccel_select="h263_decoder"
2219 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2220 h264_dxva2_hwaccel_deps="dxva2"
2221 h264_dxva2_hwaccel_select="h264_decoder"
2222 h264_vaapi_hwaccel_deps="vaapi"
2223 h264_vaapi_hwaccel_select="h264_decoder"
2224 h264_vda_decoder_deps="vda"
2225 h264_vda_decoder_select="h264_decoder"
2226 h264_vda_hwaccel_deps="vda"
2227 h264_vda_hwaccel_select="h264_decoder"
2228 h264_vda_old_hwaccel_deps="vda"
2229 h264_vda_old_hwaccel_select="h264_decoder"
2230 h264_vdpau_decoder_deps="vdpau"
2231 h264_vdpau_decoder_select="h264_decoder"
2232 h264_vdpau_hwaccel_deps="vdpau"
2233 h264_vdpau_hwaccel_select="h264_decoder"
2234 mpeg_vdpau_decoder_deps="vdpau"
2235 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2236 mpeg_xvmc_hwaccel_deps="xvmc"
2237 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2238 mpeg1_vdpau_decoder_deps="vdpau"
2239 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2240 mpeg1_vdpau_hwaccel_deps="vdpau"
2241 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2242 mpeg1_xvmc_hwaccel_deps="xvmc"
2243 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2244 mpeg2_crystalhd_decoder_select="crystalhd"
2245 mpeg2_dxva2_hwaccel_deps="dxva2"
2246 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2247 mpeg2_vaapi_hwaccel_deps="vaapi"
2248 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2249 mpeg2_vdpau_hwaccel_deps="vdpau"
2250 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2251 mpeg2_xvmc_hwaccel_deps="xvmc"
2252 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2253 mpeg4_crystalhd_decoder_select="crystalhd"
2254 mpeg4_vaapi_hwaccel_deps="vaapi"
2255 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2256 mpeg4_vdpau_decoder_deps="vdpau"
2257 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2258 mpeg4_vdpau_hwaccel_deps="vdpau"
2259 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2260 msmpeg4_crystalhd_decoder_select="crystalhd"
2261 vc1_crystalhd_decoder_select="crystalhd"
2262 vc1_dxva2_hwaccel_deps="dxva2"
2263 vc1_dxva2_hwaccel_select="vc1_decoder"
2264 vc1_vaapi_hwaccel_deps="vaapi"
2265 vc1_vaapi_hwaccel_select="vc1_decoder"
2266 vc1_vdpau_decoder_deps="vdpau"
2267 vc1_vdpau_decoder_select="vc1_decoder"
2268 vc1_vdpau_hwaccel_deps="vdpau"
2269 vc1_vdpau_hwaccel_select="vc1_decoder"
2270 wmv3_crystalhd_decoder_select="crystalhd"
2271 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2272 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2273 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2274 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2275
2276 # parsers
2277 h264_parser_select="h264_decoder"
2278 hevc_parser_select="hevc_decoder"
2279 mpegvideo_parser_select="mpegvideo"
2280 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2281 vc1_parser_select="mpegvideo vc1_decoder"
2282
2283 # external libraries
2284 libaacplus_encoder_deps="libaacplus"
2285 libcelt_decoder_deps="libcelt"
2286 libfaac_encoder_deps="libfaac"
2287 libfaac_encoder_select="audio_frame_queue"
2288 libfdk_aac_decoder_deps="libfdk_aac"
2289 libfdk_aac_encoder_deps="libfdk_aac"
2290 libfdk_aac_encoder_select="audio_frame_queue"
2291 libgme_demuxer_deps="libgme"
2292 libgsm_decoder_deps="libgsm"
2293 libgsm_encoder_deps="libgsm"
2294 libgsm_ms_decoder_deps="libgsm"
2295 libgsm_ms_encoder_deps="libgsm"
2296 libilbc_decoder_deps="libilbc"
2297 libilbc_encoder_deps="libilbc"
2298 libmodplug_demuxer_deps="libmodplug"
2299 libmp3lame_encoder_deps="libmp3lame"
2300 libmp3lame_encoder_select="audio_frame_queue"
2301 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2302 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2303 libopencore_amrnb_encoder_select="audio_frame_queue"
2304 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2305 libopenjpeg_decoder_deps="libopenjpeg"
2306 libopenjpeg_encoder_deps="libopenjpeg"
2307 libopus_decoder_deps="libopus"
2308 libopus_encoder_deps="libopus"
2309 libopus_encoder_select="audio_frame_queue"
2310 libquvi_demuxer_deps="libquvi"
2311 libschroedinger_decoder_deps="libschroedinger"
2312 libschroedinger_encoder_deps="libschroedinger"
2313 libshine_encoder_deps="libshine"
2314 libshine_encoder_select="audio_frame_queue"
2315 libspeex_decoder_deps="libspeex"
2316 libspeex_encoder_deps="libspeex"
2317 libspeex_encoder_select="audio_frame_queue"
2318 libstagefright_h264_decoder_deps="libstagefright_h264"
2319 libtheora_encoder_deps="libtheora"
2320 libtwolame_encoder_deps="libtwolame"
2321 libvo_aacenc_encoder_deps="libvo_aacenc"
2322 libvo_aacenc_encoder_select="audio_frame_queue"
2323 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2324 libvorbis_decoder_deps="libvorbis"
2325 libvorbis_encoder_deps="libvorbis"
2326 libvorbis_encoder_select="audio_frame_queue"
2327 libvpx_vp8_decoder_deps="libvpx"
2328 libvpx_vp8_encoder_deps="libvpx"
2329 libvpx_vp9_decoder_deps="libvpx"
2330 libvpx_vp9_encoder_deps="libvpx"
2331 libwavpack_encoder_deps="libwavpack"
2332 libwebp_encoder_deps="libwebp"
2333 libx264_encoder_deps="libx264"
2334 libx264rgb_encoder_deps="libx264"
2335 libx265_encoder_deps="libx265"
2336 libxavs_encoder_deps="libxavs"
2337 libxvid_encoder_deps="libxvid"
2338 libutvideo_decoder_deps="libutvideo"
2339 libutvideo_encoder_deps="libutvideo"
2340 libzvbi_teletext_decoder_deps="libzvbi"
2341
2342 # demuxers / muxers
2343 ac3_demuxer_select="ac3_parser"
2344 asf_demuxer_select="riffdec"
2345 asf_muxer_select="riffenc"
2346 asf_stream_muxer_select="asf_muxer"
2347 avi_demuxer_select="riffdec exif"
2348 avi_muxer_select="riffenc"
2349 avisynth_demuxer_deps="avisynth"
2350 avisynth_demuxer_select="riffdec"
2351 caf_demuxer_select="riffdec"
2352 dirac_demuxer_select="dirac_parser"
2353 dts_demuxer_select="dca_parser"
2354 dtshd_demuxer_select="dca_parser"
2355 dxa_demuxer_select="riffdec"
2356 eac3_demuxer_select="ac3_parser"
2357 f4v_muxer_select="mov_muxer"
2358 flac_demuxer_select="flac_parser"
2359 hds_muxer_select="flv_muxer"
2360 hls_muxer_select="mpegts_muxer"
2361 image2_alias_pix_demuxer_select="image2_demuxer"
2362 image2_brender_pix_demuxer_select="image2_demuxer"
2363 ipod_muxer_select="mov_muxer"
2364 ismv_muxer_select="mov_muxer"
2365 libnut_demuxer_deps="libnut"
2366 libnut_muxer_deps="libnut"
2367 matroska_audio_muxer_select="matroska_muxer"
2368 matroska_demuxer_select="riffdec"
2369 matroska_demuxer_suggest="bzlib lzo zlib"
2370 matroska_muxer_select="riffenc"
2371 mmf_muxer_select="riffenc"
2372 mov_demuxer_select="riffdec"
2373 mov_demuxer_suggest="zlib"
2374 mov_muxer_select="riffenc rtpenc_chain"
2375 mp3_demuxer_select="mpegaudio_parser"
2376 mp4_muxer_select="mov_muxer"
2377 mpegts_muxer_select="adts_muxer latm_muxer"
2378 mpegtsraw_demuxer_select="mpegts_demuxer"
2379 mxf_d10_muxer_select="mxf_muxer"
2380 nut_muxer_select="riffenc"
2381 nuv_demuxer_select="riffdec"
2382 ogg_demuxer_select="golomb"
2383 psp_muxer_select="mov_muxer"
2384 rtp_demuxer_select="sdp_demuxer"
2385 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2386 rtsp_demuxer_select="http_protocol rtpdec"
2387 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2388 sap_demuxer_select="sdp_demuxer"
2389 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2390 sdp_demuxer_select="rtpdec"
2391 smoothstreaming_muxer_select="ismv_muxer"
2392 spdif_muxer_select="aac_parser"
2393 tak_demuxer_select="tak_parser"
2394 tg2_muxer_select="mov_muxer"
2395 tgp_muxer_select="mov_muxer"
2396 vobsub_demuxer_select="mpegps_demuxer"
2397 w64_demuxer_select="wav_demuxer"
2398 w64_muxer_select="wav_muxer"
2399 wav_demuxer_select="riffdec"
2400 wav_muxer_select="riffenc"
2401 webm_muxer_select="riffenc"
2402 wtv_demuxer_select="riffdec"
2403 wtv_muxer_select="riffenc"
2404 xmv_demuxer_select="riffdec"
2405 xwma_demuxer_select="riffdec"
2406
2407 # indevs / outdevs
2408 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2409 alsa_outdev_deps="alsa_asoundlib_h"
2410 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2411 avfoundation_indev_select="avfoundation"
2412 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2413 caca_outdev_deps="libcaca"
2414 decklink_outdev_deps="decklink pthreads"
2415 decklink_outdev_extralibs="-lstdc++"
2416 dshow_indev_deps="IBaseFilter"
2417 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2418 dv1394_indev_deps="dv1394"
2419 dv1394_indev_select="dv_demuxer"
2420 fbdev_indev_deps="linux_fb_h"
2421 fbdev_outdev_deps="linux_fb_h"
2422 gdigrab_indev_deps="CreateDIBSection"
2423 gdigrab_indev_extralibs="-lgdi32"
2424 gdigrab_indev_select="bmp_decoder"
2425 iec61883_indev_deps="libiec61883"
2426 jack_indev_deps="jack_jack_h sem_timedwait"
2427 lavfi_indev_deps="avfilter"
2428 libcdio_indev_deps="libcdio"
2429 libdc1394_indev_deps="libdc1394"
2430 libv4l2_indev_deps="libv4l2"
2431 openal_indev_deps="openal"
2432 opengl_outdev_deps="opengl"
2433 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2434 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2435 pulse_indev_deps="libpulse"
2436 pulse_outdev_deps="libpulse"
2437 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2438 qtkit_indev_select="qtkit"
2439 sdl_outdev_deps="sdl"
2440 sndio_indev_deps="sndio_h"
2441 sndio_outdev_deps="sndio_h"
2442 v4l_indev_deps="linux_videodev_h"
2443 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2444 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2445 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2446 vfwcap_indev_extralibs="-lavicap32"
2447 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2448 xv_outdev_extralibs="-lXv -lX11 -lXext"
2449 x11grab_indev_deps="x11grab"
2450
2451 # protocols
2452 bluray_protocol_deps="libbluray"
2453 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2454 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2455 ffrtmpcrypt_protocol_select="tcp_protocol"
2456 ffrtmphttp_protocol_deps="!librtmp_protocol"
2457 ffrtmphttp_protocol_select="http_protocol"
2458 ftp_protocol_select="tcp_protocol"
2459 gopher_protocol_select="network"
2460 http_protocol_select="tcp_protocol"
2461 httpproxy_protocol_select="tcp_protocol"
2462 https_protocol_select="tls_protocol"
2463 librtmp_protocol_deps="librtmp"
2464 librtmpe_protocol_deps="librtmp"
2465 librtmps_protocol_deps="librtmp"
2466 librtmpt_protocol_deps="librtmp"
2467 librtmpte_protocol_deps="librtmp"
2468 libssh_protocol_deps="libssh"
2469 mmsh_protocol_select="http_protocol"
2470 mmst_protocol_select="network"
2471 rtmp_protocol_deps="!librtmp_protocol"
2472 rtmp_protocol_select="tcp_protocol"
2473 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2474 rtmps_protocol_deps="!librtmp_protocol"
2475 rtmps_protocol_select="tls_protocol"
2476 rtmpt_protocol_select="ffrtmphttp_protocol"
2477 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2478 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2479 rtp_protocol_select="udp_protocol"
2480 sctp_protocol_deps="struct_sctp_event_subscribe"
2481 sctp_protocol_select="network"
2482 srtp_protocol_select="rtp_protocol"
2483 tcp_protocol_select="network"
2484 tls_protocol_deps_any="openssl gnutls"
2485 tls_protocol_select="tcp_protocol"
2486 udp_protocol_select="network"
2487 unix_protocol_deps="sys_un_h"
2488 unix_protocol_select="network"
2489
2490 # filters
2491 aconvert_filter_deps="swresample"
2492 amovie_filter_deps="avcodec avformat"
2493 aresample_filter_deps="swresample"
2494 ass_filter_deps="libass"
2495 asyncts_filter_deps="avresample"
2496 atempo_filter_deps="avcodec"
2497 atempo_filter_select="rdft"
2498 azmq_filter_deps="libzmq"
2499 blackframe_filter_deps="gpl"
2500 boxblur_filter_deps="gpl"
2501 bs2b_filter_deps="libbs2b"
2502 colormatrix_filter_deps="gpl"
2503 cropdetect_filter_deps="gpl"
2504 dctdnoiz_filter_deps="avcodec"
2505 dctdnoiz_filter_select="dct"
2506 delogo_filter_deps="gpl"
2507 deshake_filter_deps="avcodec"
2508 deshake_filter_select="dsputil"
2509 drawtext_filter_deps="libfreetype"
2510 ebur128_filter_deps="gpl"
2511 flite_filter_deps="libflite"
2512 frei0r_filter_deps="frei0r dlopen"
2513 frei0r_filter_extralibs='$ldl'
2514 frei0r_src_filter_deps="frei0r dlopen"
2515 frei0r_src_filter_extralibs='$ldl'
2516 geq_filter_deps="gpl"
2517 histeq_filter_deps="gpl"
2518 hqdn3d_filter_deps="gpl"
2519 interlace_filter_deps="gpl"
2520 kerndeint_filter_deps="gpl"
2521 ladspa_filter_deps="ladspa dlopen"
2522 ladspa_filter_extralibs='$ldl'
2523 mcdeint_filter_deps="avcodec gpl"
2524 movie_filter_deps="avcodec avformat"
2525 mp_filter_deps="gpl avcodec swscale inline_asm"
2526 mpdecimate_filter_deps="gpl avcodec"
2527 mptestsrc_filter_deps="gpl"
2528 negate_filter_deps="lut_filter"
2529 perspective_filter_deps="gpl"
2530 ocv_filter_deps="libopencv"
2531 owdenoise_filter_deps="gpl"
2532 pan_filter_deps="swresample"
2533 phase_filter_deps="gpl"
2534 pp_filter_deps="gpl postproc"
2535 pullup_filter_deps="gpl"
2536 removelogo_filter_deps="avcodec avformat swscale"
2537 resample_filter_deps="avresample"
2538 sab_filter_deps="gpl swscale"
2539 scale_filter_deps="swscale"
2540 smartblur_filter_deps="gpl swscale"
2541 showspectrum_filter_deps="avcodec"
2542 showspectrum_filter_select="rdft"
2543 spp_filter_deps="gpl avcodec"
2544 spp_filter_select="dsputil fft idctdsp"
2545 stereo3d_filter_deps="gpl"
2546 subtitles_filter_deps="avformat avcodec libass"
2547 super2xsai_filter_deps="gpl"
2548 tinterlace_filter_deps="gpl"
2549 vidstabdetect_filter_deps="libvidstab"
2550 vidstabtransform_filter_deps="libvidstab"
2551 pixfmts_super2xsai_test_deps="super2xsai_filter"
2552 tinterlace_merge_test_deps="tinterlace_filter"
2553 tinterlace_pad_test_deps="tinterlace_filter"
2554 zmq_filter_deps="libzmq"
2555 zoompan_filter_deps="swscale"
2556
2557 # examples
2558 avio_reading="avformat avcodec avutil"
2559 avcodec_example_deps="avcodec avutil"
2560 demuxing_decoding_example_deps="avcodec avformat avutil"
2561 filter_audio_example_deps="avfilter avutil"
2562 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2563 filtering_video_example_deps="avfilter avcodec avformat avutil"
2564 metadata_example_deps="avformat avutil"
2565 muxing_example_deps="avcodec avformat avutil swscale"
2566 remuxing_example_deps="avcodec avformat avutil"
2567 resampling_audio_example_deps="avutil swresample"
2568 scaling_video_example_deps="avutil swscale"
2569 transcode_aac_example_deps="avcodec avformat swresample"
2570 transcoding_example_deps="avfilter avcodec avformat avutil"
2571
2572 # libraries, in linking order
2573 avcodec_deps="avutil"
2574 avdevice_deps="avformat avcodec avutil"
2575 avfilter_deps="avutil"
2576 avformat_deps="avcodec avutil"
2577 avresample_deps="avutil"
2578 postproc_deps="avutil gpl"
2579 swresample_deps="avutil"
2580 swscale_deps="avutil"
2581
2582 # programs
2583 ffmpeg_deps="avcodec avfilter avformat swresample"
2584 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2585                null_filter
2586                setpts_filter trim_filter"
2587 ffplay_deps="avcodec avformat swscale swresample sdl"
2588 ffplay_libs='$sdl_libs'
2589 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2590 ffprobe_deps="avcodec avformat"
2591 ffserver_deps="avformat fork sarestart"
2592 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2593
2594 # documentation
2595 podpages_deps="perl"
2596 manpages_deps="perl pod2man"
2597 htmlpages_deps="perl texi2html"
2598 txtpages_deps="perl makeinfo"
2599 doc_deps_any="manpages htmlpages podpages txtpages"
2600
2601 # default parameters
2602
2603 logfile="config.log"
2604
2605 # installation paths
2606 prefix_default="/usr/local"
2607 bindir_default='${prefix}/bin'
2608 datadir_default='${prefix}/share/ffmpeg'
2609 docdir_default='${prefix}/share/doc/ffmpeg'
2610 incdir_default='${prefix}/include'
2611 libdir_default='${prefix}/lib'
2612 mandir_default='${prefix}/share/man'
2613 shlibdir_default="$libdir_default"
2614
2615 # toolchain
2616 ar_default="ar"
2617 cc_default="gcc"
2618 cxx_default="g++"
2619 host_cc_default="gcc"
2620 cp_f="cp -f"
2621 install="install"
2622 ln_s="ln -s -f"
2623 nm_default="nm -g"
2624 objformat="elf"
2625 pkg_config_default=pkg-config
2626 ranlib_default="ranlib"
2627 strip_default="strip"
2628 yasmexe_default="yasm"
2629 windres_default="windres"
2630
2631 nogas=":"
2632
2633 # OS
2634 target_os_default=$(tolower $(uname -s))
2635 host_os=$target_os_default
2636
2637 # machine
2638 if test "$target_os_default" = aix; then
2639     arch_default=$(uname -p)
2640     strip_default="strip -X32_64"
2641 else
2642     arch_default=$(uname -m)
2643 fi
2644 cpu="generic"
2645
2646 # configurable options
2647 enable $PROGRAM_LIST
2648 enable $DOCUMENT_LIST
2649 enable $EXAMPLE_LIST
2650 enable $(filter_out avresample $LIBRARY_LIST)
2651 enable stripping
2652
2653 enable asm
2654 enable debug
2655 enable doc
2656 enable optimizations
2657 enable runtime_cpudetect
2658 enable safe_bitstream_reader
2659 enable static
2660 enable swscale_alpha
2661
2662 sws_max_filter_size_default=256
2663 set_default sws_max_filter_size
2664
2665 # Enable hwaccels by default.
2666 enable dxva2 vaapi vda vdpau xvmc
2667 enable xlib
2668
2669 # build settings
2670 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2671 LIBPREF="lib"
2672 LIBSUF=".a"
2673 FULLNAME='$(NAME)$(BUILDSUF)'
2674 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2675 SLIBPREF="lib"
2676 SLIBSUF=".so"
2677 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2678 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2679 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2680 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2681 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2682 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2683
2684 asflags_filter=echo
2685 cflags_filter=echo
2686 ldflags_filter=echo
2687
2688 AS_C='-c'
2689 AS_O='-o $@'
2690 CC_C='-c'
2691 CC_E='-E -o $@'
2692 CC_O='-o $@'
2693 CXX_C='-c'
2694 CXX_O='-o $@'
2695 LD_O='-o $@'
2696 LD_LIB='-l%'
2697 LD_PATH='-L'
2698 HOSTCC_C='-c'
2699 HOSTCC_E='-E -o $@'
2700 HOSTCC_O='-o $@'
2701 HOSTLD_O='-o $@'
2702
2703 host_libs='-lm'
2704 host_cflags_filter=echo
2705 host_ldflags_filter=echo
2706
2707 target_path='$(CURDIR)'
2708
2709 # since the object filename is not given with the -MM flag, the compiler
2710 # is only able to print the basename, and we must add the path ourselves
2711 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2712 DEPFLAGS='-MM'
2713
2714 # find source path
2715 if test -f configure; then
2716     source_path=.
2717 else
2718     source_path=$(cd $(dirname "$0"); pwd)
2719     echo "$source_path" | grep -q '[[:blank:]]' &&
2720         die "Out of tree builds are impossible with whitespace in source path."
2721     test -e "$source_path/config.h" &&
2722         die "Out of tree builds are impossible with config.h in source dir."
2723 fi
2724
2725 for v in "$@"; do
2726     r=${v#*=}
2727     l=${v%"$r"}
2728     r=$(sh_quote "$r")
2729     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2730 done
2731
2732 find_things(){
2733     thing=$1
2734     pattern=$2
2735     file=$source_path/$3
2736     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2737 }
2738
2739 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2740 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2741 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2742 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2743 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2744 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2745 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2746 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2747 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2748 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2749 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2750
2751 ALL_COMPONENTS="
2752     $BSF_LIST
2753     $DECODER_LIST
2754     $DEMUXER_LIST
2755     $ENCODER_LIST
2756     $FILTER_LIST
2757     $HWACCEL_LIST
2758     $INDEV_LIST
2759     $MUXER_LIST
2760     $OUTDEV_LIST
2761     $PARSER_LIST
2762     $PROTOCOL_LIST
2763 "
2764
2765 for n in $COMPONENT_LIST; do
2766     v=$(toupper ${n%s})_LIST
2767     eval enable \$$v
2768     eval ${n}_if_any="\$$v"
2769 done
2770
2771 enable $ARCH_EXT_LIST
2772
2773 die_unknown(){
2774     echo "Unknown option \"$1\"."
2775     echo "See $0 --help for available options."
2776     exit 1
2777 }
2778
2779 print_3_columns() {
2780     cat | tr ' ' '\n' | sort | pr -r -3 -t
2781 }
2782
2783 show_list() {
2784     suffix=_$1
2785     shift
2786     echo $* | sed s/$suffix//g | print_3_columns
2787     exit 0
2788 }
2789
2790 rand_list(){
2791     IFS=', '
2792     set -- $*
2793     unset IFS
2794     for thing; do
2795         comp=${thing%:*}
2796         prob=${thing#$comp}
2797         prob=${prob#:}
2798         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2799         echo "prob ${prob:-0.5}"
2800         printf '%s\n' $comp
2801     done
2802 }
2803
2804 do_random(){
2805     action=$1
2806     shift
2807     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2808     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2809 }
2810
2811 for opt do
2812     optval="${opt#*=}"
2813     case "$opt" in
2814         --extra-ldflags=*)
2815             add_ldflags $optval
2816         ;;
2817         --extra-libs=*)
2818             add_extralibs $optval
2819         ;;
2820         --disable-devices)
2821             disable $INDEV_LIST $OUTDEV_LIST
2822         ;;
2823         --enable-debug=*)
2824             debuglevel="$optval"
2825         ;;
2826         --disable-programs)
2827             disable $PROGRAM_LIST
2828         ;;
2829         --disable-everything)
2830             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2831         ;;
2832         --disable-all)
2833             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2834             disable $LIBRARY_LIST $PROGRAM_LIST doc
2835         ;;
2836         --enable-random|--disable-random)
2837             action=${opt%%-random}
2838             do_random ${action#--} $COMPONENT_LIST
2839         ;;
2840         --enable-random=*|--disable-random=*)
2841             action=${opt%%-random=*}
2842             do_random ${action#--} $optval
2843         ;;
2844         --enable-*=*|--disable-*=*)
2845             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2846             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2847             eval list=\$$(toupper $thing)_LIST
2848             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2849             list=$(filter "$name" $list)
2850             [ "$list" = "" ] && warn "Option $opt did not match anything"
2851             $action $list
2852         ;;
2853         --enable-?*|--disable-?*)
2854             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2855             if is_in $option $COMPONENT_LIST; then
2856                 test $action = disable && action=unset
2857                 eval $action \$$(toupper ${option%s})_LIST
2858             elif is_in $option $CMDLINE_SELECT; then
2859                 $action $option
2860             else
2861                 die_unknown $opt
2862             fi
2863         ;;
2864         --list-*)
2865             NAME="${opt#--list-}"
2866             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2867             NAME=${NAME%s}
2868             eval show_list $NAME \$$(toupper $NAME)_LIST
2869         ;;
2870         --help|-h) show_help
2871         ;;
2872         --fatal-warnings) enable fatal_warnings
2873         ;;
2874         *)
2875             optname="${opt%%=*}"
2876             optname="${optname#--}"
2877             optname=$(echo "$optname" | sed 's/-/_/g')
2878             if is_in $optname $CMDLINE_SET; then
2879                 eval $optname='$optval'
2880             elif is_in $optname $CMDLINE_APPEND; then
2881                 append $optname "$optval"
2882             else
2883                 die_unknown $opt
2884             fi
2885         ;;
2886     esac
2887 done
2888
2889 disabled logging && logfile=/dev/null
2890
2891 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2892 set >> $logfile
2893
2894 test -n "$cross_prefix" && enable cross_compile
2895
2896 if enabled cross_compile; then
2897     test -n "$arch" && test -n "$target_os" ||
2898         die "Must specify target arch and OS when cross-compiling"
2899 fi
2900
2901 ar_default="${cross_prefix}${ar_default}"
2902 cc_default="${cross_prefix}${cc_default}"
2903 cxx_default="${cross_prefix}${cxx_default}"
2904 nm_default="${cross_prefix}${nm_default}"
2905 pkg_config_default="${cross_prefix}${pkg_config_default}"
2906 ranlib_default="${cross_prefix}${ranlib_default}"
2907 strip_default="${cross_prefix}${strip_default}"
2908 windres_default="${cross_prefix}${windres_default}"
2909
2910 sysinclude_default="${sysroot}/usr/include"
2911
2912 test -n "$valgrind" && toolchain="valgrind-memcheck"
2913
2914 case "$toolchain" in
2915     clang-asan)
2916         cc_default="clang"
2917         add_cflags  -fsanitize=address
2918         add_ldflags -fsanitize=address
2919     ;;
2920     clang-tsan)
2921         cc_default="clang"
2922         add_cflags  -fsanitize=thread -pie
2923         add_ldflags -fsanitize=thread -pie
2924     ;;
2925     clang-usan)
2926         cc_default="clang"
2927         add_cflags  -fsanitize=undefined
2928         add_ldflags -fsanitize=undefined
2929     ;;
2930     gcc-asan)
2931         cc_default="gcc"
2932         add_cflags  -fsanitize=address
2933         add_ldflags -fsanitize=address
2934     ;;
2935     gcc-tsan)
2936         cc_default="gcc"
2937         add_cflags  -fsanitize=thread -pie -fPIC
2938         add_ldflags -fsanitize=thread -pie -fPIC
2939     ;;
2940     gcc-usan)
2941         cc_default="gcc"
2942         add_cflags  -fsanitize=undefined
2943         add_ldflags -fsanitize=undefined
2944     ;;
2945     valgrind-massif)
2946         target_exec_default=${valgrind:-"valgrind"}
2947         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"
2948     ;;
2949     valgrind-memcheck)
2950         target_exec_default=${valgrind:-"valgrind"}
2951         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2952     ;;
2953     msvc)
2954         # Check whether the current MSVC version needs the C99 converter.
2955         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2956         # support enough of C99 to build ffmpeg. Default to the new
2957         # behaviour if the regexp was unable to match anything, since this
2958         # successfully parses the version number of existing supported
2959         # versions that require the converter (MSVC 2010 and 2012).
2960         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2961         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2962             cc_default="cl"
2963         else
2964             cc_default="c99wrap cl"
2965         fi
2966         ld_default="link"
2967         nm_default="dumpbin -symbols"
2968         ar_default="lib"
2969         target_os_default="win32"
2970         # Use a relative path for TMPDIR. This makes sure all the
2971         # ffconf temp files are written with a relative path, avoiding
2972         # issues with msys/win32 path conversion for MSVC parameters
2973         # such as -Fo<file> or -out:<file>.
2974         TMPDIR=.
2975     ;;
2976     icl)
2977         cc_default="icl"
2978         ld_default="xilink"
2979         nm_default="dumpbin -symbols"
2980         ar_default="xilib"
2981         target_os_default="win32"
2982         TMPDIR=.
2983     ;;
2984     gcov)
2985         add_cflags  -fprofile-arcs -ftest-coverage
2986         add_ldflags -fprofile-arcs -ftest-coverage
2987     ;;
2988     hardened)
2989         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2990         add_ldflags -Wl,-z,relro -Wl,-z,now
2991     ;;
2992     ?*)
2993         die "Unknown toolchain $toolchain"
2994     ;;
2995 esac
2996
2997 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2998 enabled cross_compile || host_cc_default=$cc
2999 set_default host_cc
3000
3001 if ! $pkg_config --version >/dev/null 2>&1; then
3002     warn "$pkg_config not found, library detection may fail."
3003     pkg_config=false
3004 fi
3005
3006 exesuf() {
3007     case $1 in
3008         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3009     esac
3010 }
3011
3012 EXESUF=$(exesuf $target_os)
3013 HOSTEXESUF=$(exesuf $host_os)
3014
3015 # set temporary file name
3016 : ${TMPDIR:=$TEMPDIR}
3017 : ${TMPDIR:=$TMP}
3018 : ${TMPDIR:=/tmp}
3019
3020 if [ -n "$tempprefix" ] ; then
3021     mktemp(){
3022         echo $tempprefix.${HOSTNAME}.${UID}
3023     }
3024 elif ! check_cmd mktemp -u XXXXXX; then
3025     # simple replacement for missing mktemp
3026     # NOT SAFE FOR GENERAL USE
3027     mktemp(){
3028         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3029     }
3030 fi
3031
3032 tmpfile(){
3033     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3034         (set -C; exec > $tmp) 2>/dev/null ||
3035         die "Unable to create temporary file in $TMPDIR."
3036     append TMPFILES $tmp
3037     eval $1=$tmp
3038 }
3039
3040 trap 'rm -f -- $TMPFILES' EXIT
3041
3042 tmpfile TMPASM .asm
3043 tmpfile TMPC   .c
3044 tmpfile TMPCPP .cpp
3045 tmpfile TMPE   $EXESUF
3046 tmpfile TMPH   .h
3047 tmpfile TMPM   .m
3048 tmpfile TMPO   .o
3049 tmpfile TMPS   .S
3050 tmpfile TMPSH  .sh
3051 tmpfile TMPV   .ver
3052
3053 unset -f mktemp
3054
3055 chmod +x $TMPE
3056
3057 # make sure we can execute files in $TMPDIR
3058 cat > $TMPSH 2>> $logfile <<EOF
3059 #! /bin/sh
3060 EOF
3061 chmod +x $TMPSH >> $logfile 2>&1
3062 if ! $TMPSH >> $logfile 2>&1; then
3063     cat <<EOF
3064 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3065 variable to another directory and make sure that it is not mounted noexec.
3066 EOF
3067     die "Sanity test failed."
3068 fi
3069
3070 ccc_flags(){
3071     for flag; do
3072         case $flag in
3073             -std=c99)           echo -c99                       ;;
3074             -mcpu=*)            echo -arch ${flag#*=}           ;;
3075             -mieee)             echo -ieee                      ;;
3076             -O*|-fast)          echo $flag                      ;;
3077             -fno-math-errno)    echo -assume nomath_errno       ;;
3078             -g)                 echo -g3                        ;;
3079             -Wall)              echo -msg_enable level2         ;;
3080             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3081             -Wl,*)              echo $flag                      ;;
3082             -f*|-W*)                                            ;;
3083             *)                  echo $flag                      ;;
3084         esac
3085    done
3086 }
3087
3088 cparser_flags(){
3089     for flag; do
3090         case $flag in
3091             -Wno-switch)             echo -Wno-switch-enum ;;
3092             -Wno-format-zero-length) ;;
3093             -Wdisabled-optimization) ;;
3094             -Wno-pointer-sign)       echo -Wno-other ;;
3095             *)                       echo $flag ;;
3096         esac
3097     done
3098 }
3099
3100 msvc_common_flags(){
3101     for flag; do
3102         case $flag in
3103             # In addition to specifying certain flags under the compiler
3104             # specific filters, they must be specified here as well or else the
3105             # generic catch all at the bottom will print the original flag.
3106             -Wall)                ;;
3107             -std=c99)             ;;
3108             # Common flags
3109             -fomit-frame-pointer) ;;
3110             -g)                   echo -Z7 ;;
3111             -fno-math-errno)      ;;
3112             -fno-common)          ;;
3113             -fno-signed-zeros)    ;;
3114             -fPIC)                ;;
3115             -mthumb)              ;;
3116             -march=*)             ;;
3117             -lz)                  echo zlib.lib ;;
3118             -lavifil32)           echo vfw32.lib ;;
3119             -lavicap32)           echo vfw32.lib user32.lib ;;
3120             -l*)                  echo ${flag#-l}.lib ;;
3121             *)                    echo $flag ;;
3122         esac
3123     done
3124 }
3125
3126 msvc_flags(){
3127     msvc_common_flags "$@"
3128     for flag; do
3129         case $flag in
3130             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3131                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3132                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3133                                        -wd4554 \
3134                                        -wd4273 ;;
3135         esac
3136     done
3137 }
3138
3139 icl_flags(){
3140     msvc_common_flags "$@"
3141     for flag; do
3142         case $flag in
3143             # Despite what Intel's documentation says -Wall, which is supported
3144             # on Windows, does enable remarks so disable them here.
3145             -Wall)                echo $flag -Qdiag-disable:remark ;;
3146             -std=c99)             echo -Qstd=c99 ;;
3147             -flto)                echo -ipo ;;
3148         esac
3149     done
3150 }
3151
3152 icc_flags(){
3153     for flag; do
3154         case $flag in
3155             -flto)                echo -ipo ;;
3156             *)                    echo $flag ;;
3157         esac
3158     done
3159 }
3160
3161 pgi_flags(){
3162     for flag; do
3163         case $flag in
3164             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3165             -fomit-frame-pointer) echo -Mnoframe ;;
3166             -g)                   echo -gopt ;;
3167             *)                    echo $flag ;;
3168         esac
3169     done
3170 }
3171
3172 suncc_flags(){
3173     for flag; do
3174         case $flag in
3175             -march=*|-mcpu=*)
3176                 case "${flag#*=}" in
3177                     native)                   echo -xtarget=native       ;;
3178                     v9|niagara)               echo -xarch=sparc          ;;
3179                     ultrasparc)               echo -xarch=sparcvis       ;;
3180                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3181                     i586|pentium)             echo -xchip=pentium        ;;
3182                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3183                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3184                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3185                     pentium4*)          echo -xtarget=pentium4           ;;
3186                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3187                     *-sse3)             echo -xarch=sse3                 ;;
3188                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3189                     bonnell)                   echo -xarch=ssse3         ;;
3190                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3191                     westmere)                  echo -xtarget=westmere    ;;
3192                     silvermont)                echo -xarch=sse4_2        ;;
3193                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3194                     core-avx*|ivybridge|haswell|broadwell)
3195                                                echo -xarch=avx           ;;
3196                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3197                     btver1)                    echo -xarch=amdsse4a      ;;
3198                     btver2|bdver*)             echo -xarch=avx           ;;
3199                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3200                     k8|opteron|athlon64|athlon-fx)
3201                                                echo -xarch=sse2a         ;;
3202                     athlon*)                   echo -xarch=pentium_proa  ;;
3203                 esac
3204                 ;;
3205             -std=c99)             echo -xc99              ;;
3206             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3207             -fPIC)                echo -KPIC -xcode=pic32 ;;
3208             -W*,*)                echo $flag              ;;
3209             -f*-*|-W*|-mimpure-text)                      ;;
3210             -shared)              echo -G                 ;;
3211             *)                    echo $flag              ;;
3212         esac
3213     done
3214 }
3215
3216 tms470_flags(){
3217     for flag; do
3218         case $flag in
3219             -march=*|-mcpu=*)
3220                 case "${flag#*=}" in
3221                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3222                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3223                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3224                     armv6*|arm11*)          echo -mv=6   ;;
3225                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3226                                             echo -mv=5e  ;;
3227                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3228                 esac
3229                 ;;
3230             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3231             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3232             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3233             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3234             -msoft-float)   echo --float_support=vfplib       ;;
3235             -O[0-3]|-mf=*)  echo $flag                        ;;
3236             -g)             echo -g -mn                       ;;
3237             -pds=*)         echo $flag                        ;;
3238             -D*|-I*)        echo $flag                        ;;
3239             --gcc|--abi=*)  echo $flag                        ;;
3240             -me)            echo $flag                        ;;
3241         esac
3242     done
3243 }
3244
3245 probe_cc(){
3246     pfx=$1
3247     _cc=$2
3248
3249     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3250     unset _ld_o _ldflags _ld_lib _ld_path
3251     unset _depflags _DEPCMD _DEPFLAGS
3252     _flags_filter=echo
3253
3254     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3255         true # no-op to avoid reading stdin in following checks
3256     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3257         _type=llvm_gcc
3258         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3259         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3260         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3261         _cflags_speed='-O3'
3262         _cflags_size='-Os'
3263     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3264         _type=gcc
3265         gcc_version=$($_cc --version | head -n1)
3266         gcc_basever=$($_cc -dumpversion)
3267         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3268         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3269         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3270         if ! $_cc -dumpversion | grep -q '^2\.'; then
3271             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3272         fi
3273         _cflags_speed='-O3'
3274         _cflags_size='-Os'
3275     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3276         _type=icc
3277         _ident=$($_cc --version | head -n1)
3278         _depflags='-MMD'
3279         _cflags_speed='-O3'
3280         _cflags_size='-Os'
3281         _cflags_noopt='-O1'
3282         _flags_filter=icc_flags
3283     elif $_cc -v 2>&1 | grep -q xlc; then
3284         _type=xlc
3285         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3286         _cflags_speed='-O5'
3287         _cflags_size='-O5 -qcompact'
3288     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3289         _type=ccc
3290         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3291         _DEPFLAGS='-M'
3292         _cflags_speed='-fast'
3293         _cflags_size='-O1'
3294         _flags_filter=ccc_flags
3295     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3296         test -d "$sysroot" || die "No valid sysroot specified."
3297         _type=armcc
3298         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3299         armcc_conf="$PWD/armcc.conf"
3300         $_cc --arm_linux_configure                 \
3301              --arm_linux_config_file="$armcc_conf" \
3302              --configure_sysroot="$sysroot"        \
3303              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3304              die "Error creating armcc configuration file."
3305         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3306         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3307         as_default="${cross_prefix}gcc"
3308         _depflags='-MMD'
3309         _cflags_speed='-O3'
3310         _cflags_size='-Os'
3311     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3312         _type=tms470
3313         _ident=$($_cc -version | head -n1 | tr -s ' ')
3314         _flags='--gcc --abi=eabi -me'
3315         _cc_e='-ppl -fe=$@'
3316         _cc_o='-fe=$@'
3317         _depflags='-ppa -ppd=$(@:.o=.d)'
3318         _cflags_speed='-O3 -mf=5'
3319         _cflags_size='-O3 -mf=2'
3320         _flags_filter=tms470_flags
3321     elif $_cc -v 2>&1 | grep -q clang; then
3322         _type=clang
3323         _ident=$($_cc --version | head -n1)
3324         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3325         _cflags_speed='-O3'
3326         _cflags_size='-Os'
3327     elif $_cc -V 2>&1 | grep -q Sun; then
3328         _type=suncc
3329         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3330         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3331         _DEPFLAGS='-xM1 -xc99'
3332         _ldflags='-std=c99'
3333         _cflags_speed='-O5'
3334         _cflags_size='-O5 -xspace'
3335         _flags_filter=suncc_flags
3336     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3337         _type=pathscale
3338         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O2'
3341         _cflags_size='-Os'
3342         _flags_filter='filter_out -Wdisabled-optimization'
3343     elif $_cc -v 2>&1 | grep -q Open64; then
3344         _type=open64
3345         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3346         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3347         _cflags_speed='-O2'
3348         _cflags_size='-Os'
3349         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3350     elif $_cc -V 2>&1 | grep -q Portland; then
3351         _type=pgi
3352         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3353         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3354         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3355         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3356         _cflags_noopt="-O"
3357         _flags_filter=pgi_flags
3358     elif $_cc 2>&1 | grep -q Microsoft; then
3359         _type=msvc
3360         _ident=$($cc 2>&1 | head -n1)
3361         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3362         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3363         _cflags_speed="-O2"
3364         _cflags_size="-O1"
3365         if $_cc 2>&1 | grep -q Linker; then
3366             _ld_o='-out:$@'
3367         else
3368             _ld_o='-Fe$@'
3369         fi
3370         _cc_o='-Fo$@'
3371         _cc_e='-P -Fi$@'
3372         _flags_filter=msvc_flags
3373         _ld_lib='lib%.a'
3374         _ld_path='-libpath:'
3375         _flags='-nologo'
3376         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3377         if [ $pfx = hostcc ]; then
3378             append _cflags -Dsnprintf=_snprintf
3379         fi
3380         disable stripping
3381     elif $_cc 2>&1 | grep -q Intel; then
3382         _type=icl
3383         _ident=$($cc 2>&1 | head -n1)
3384         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3385         # Not only is O3 broken on 13.x+ but it is slower on all previous
3386         # versions (tested) as well.
3387         _cflags_speed="-O2"
3388         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3389         if $_cc 2>&1 | grep -q Linker; then
3390             _ld_o='-out:$@'
3391         else
3392             _ld_o='-Fe$@'
3393         fi
3394         _cc_o='-Fo$@'
3395         _cc_e='-P'
3396         _flags_filter=icl_flags
3397         _ld_lib='lib%.a'
3398         _ld_path='-libpath:'
3399         # -Qdiag-error to make icl error when seeing certain unknown arguments
3400         _flags='-nologo -Qdiag-error:4044,10157'
3401         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3402         # with MSVC which enables it by default.
3403         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3404         if [ $pfx = hostcc ]; then
3405             append _cflags -Dsnprintf=_snprintf
3406         fi
3407     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3408         _type=cparser
3409         _ident=$($_cc --version | head -n1)
3410         _depflags='-MMD'
3411         _cflags_speed='-O4'
3412         _cflags_size='-O2'
3413         _flags_filter=cparser_flags
3414     fi
3415
3416     eval ${pfx}_type=\$_type
3417     eval ${pfx}_ident=\$_ident
3418 }
3419
3420 set_ccvars(){
3421     eval ${1}_C=\${_cc_c-\${${1}_C}}
3422     eval ${1}_E=\${_cc_e-\${${1}_E}}
3423     eval ${1}_O=\${_cc_o-\${${1}_O}}
3424
3425     if [ -n "$_depflags" ]; then
3426         eval ${1}_DEPFLAGS=\$_depflags
3427     else
3428         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3429         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3430         eval DEP${1}FLAGS=\$_flags
3431     fi
3432 }
3433
3434 probe_cc cc "$cc"
3435 cflags_filter=$_flags_filter
3436 cflags_speed=$_cflags_speed
3437 cflags_size=$_cflags_size
3438 cflags_noopt=$_cflags_noopt
3439 add_cflags $_flags $_cflags
3440 cc_ldflags=$_ldflags
3441 set_ccvars CC
3442
3443 probe_cc hostcc "$host_cc"
3444 host_cflags_filter=$_flags_filter
3445 add_host_cflags  $_flags $_cflags
3446 set_ccvars HOSTCC
3447
3448 test -n "$cc_type" && enable $cc_type ||
3449     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3450
3451 : ${as_default:=$cc}
3452 : ${dep_cc_default:=$cc}
3453 : ${ld_default:=$cc}
3454 : ${host_ld_default:=$host_cc}
3455 set_default ar as dep_cc ld host_ld windres
3456
3457 probe_cc as "$as"
3458 asflags_filter=$_flags_filter
3459 add_asflags $_flags $_cflags
3460 set_ccvars AS
3461
3462 probe_cc ld "$ld"
3463 ldflags_filter=$_flags_filter
3464 add_ldflags $_flags $_ldflags
3465 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3466 LD_O=${_ld_o-$LD_O}
3467 LD_LIB=${_ld_lib-$LD_LIB}
3468 LD_PATH=${_ld_path-$LD_PATH}
3469
3470 probe_cc hostld "$host_ld"
3471 host_ldflags_filter=$_flags_filter
3472 add_host_ldflags $_flags $_ldflags
3473 HOSTLD_O=${_ld_o-$HOSTLD_O}
3474
3475 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3476     probe_cc depcc "$dep_cc"
3477     CCDEP=${_DEPCMD:-$DEPCMD}
3478     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3479     DEPCCFLAGS=$_flags
3480 fi
3481
3482 if $ar 2>&1 | grep -q Microsoft; then
3483     arflags="-nologo"
3484     ar_o='-out:$@'
3485 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3486     arflags="rq"
3487     ar_o='$@'
3488 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3489     arflags='-Xany -r -c'
3490     ar_o='$@'
3491 else
3492     arflags="rc"
3493     ar_o='$@'
3494 fi
3495
3496 add_cflags $extra_cflags
3497 add_cxxflags $extra_cxxflags
3498 add_asflags $extra_cflags
3499
3500 if test -n "$sysroot"; then
3501     case "$cc_type" in
3502         gcc|llvm_gcc|clang)
3503             add_cppflags --sysroot="$sysroot"
3504             add_ldflags --sysroot="$sysroot"
3505 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3506             add_cppflags -isysroot "$sysroot"
3507             add_ldflags -isysroot "$sysroot"
3508         ;;
3509         tms470)
3510             add_cppflags -I"$sysinclude"
3511             add_ldflags  --sysroot="$sysroot"
3512         ;;
3513     esac
3514 fi
3515
3516 if test "$cpu" = host; then
3517     enabled cross_compile &&
3518         die "--cpu=host makes no sense when cross-compiling."
3519
3520     case "$cc_type" in
3521         gcc|llvm_gcc)
3522             check_native(){
3523                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3524                 sed -n "/cc1.*$1=/{
3525                             s/.*$1=\\([^ ]*\\).*/\\1/
3526                             p
3527                             q
3528                         }" $TMPE
3529             }
3530             cpu=$(check_native -march || check_native -mcpu)
3531         ;;
3532     esac
3533
3534     test "${cpu:-host}" = host &&
3535         die "--cpu=host not supported with compiler $cc"
3536 fi
3537
3538 # Deal with common $arch aliases
3539 case "$arch" in
3540     aarch64|arm64)
3541         arch="aarch64"
3542     ;;
3543     arm*|iPad*|iPhone*)
3544         arch="arm"
3545     ;;
3546     mips*|IP*)
3547         arch="mips"
3548     ;;
3549     parisc*|hppa*)
3550         arch="parisc"
3551     ;;
3552     "Power Macintosh"|ppc*|powerpc*)
3553         arch="ppc"
3554     ;;
3555     s390|s390x)
3556         arch="s390"
3557     ;;
3558     sh4|sh)
3559         arch="sh4"
3560     ;;
3561     sun4u|sparc*)
3562         arch="sparc"
3563     ;;
3564     tilegx|tile-gx)
3565         arch="tilegx"
3566     ;;
3567     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3568         arch="x86"
3569     ;;
3570 esac
3571
3572 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3573 enable $arch
3574
3575 # Add processor-specific flags
3576 if enabled aarch64; then
3577
3578     case $cpu in
3579         armv*)
3580             cpuflags="-march=$cpu"
3581         ;;
3582         *)
3583             cpuflags="-mcpu=$cpu"
3584         ;;
3585     esac
3586
3587 elif enabled alpha; then
3588
3589     cpuflags="-mcpu=$cpu"
3590
3591 elif enabled arm; then
3592
3593     check_arm_arch() {
3594         check_cpp_condition stddef.h \
3595             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3596             $cpuflags
3597     }
3598
3599     probe_arm_arch() {
3600         if   check_arm_arch 4;        then echo armv4;
3601         elif check_arm_arch 4T;       then echo armv4t;
3602         elif check_arm_arch 5;        then echo armv5;
3603         elif check_arm_arch 5E;       then echo armv5e;
3604         elif check_arm_arch 5T;       then echo armv5t;
3605         elif check_arm_arch 5TE;      then echo armv5te;
3606         elif check_arm_arch 5TEJ;     then echo armv5te;
3607         elif check_arm_arch 6;        then echo armv6;
3608         elif check_arm_arch 6J;       then echo armv6j;
3609         elif check_arm_arch 6K;       then echo armv6k;
3610         elif check_arm_arch 6Z;       then echo armv6z;
3611         elif check_arm_arch 6ZK;      then echo armv6zk;
3612         elif check_arm_arch 6T2;      then echo armv6t2;
3613         elif check_arm_arch 7;        then echo armv7;
3614         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3615         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3616         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3617         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3618         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3619         fi
3620     }
3621
3622     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3623
3624     case $cpu in
3625         armv*)
3626             cpuflags="-march=$cpu"
3627             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3628         ;;
3629         *)
3630             cpuflags="-mcpu=$cpu"
3631             case $cpu in
3632                 cortex-a*)                               subarch=armv7a  ;;
3633                 cortex-r*)                               subarch=armv7r  ;;
3634                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3635                 arm11*)                                  subarch=armv6   ;;
3636                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3637                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3638                 *)                             subarch=$(probe_arm_arch) ;;
3639             esac
3640         ;;
3641     esac
3642
3643     case "$subarch" in
3644         armv5t*)    enable fast_clz                ;;
3645         armv[6-8]*)
3646             enable fast_clz
3647             disabled fast_unaligned || enable fast_unaligned
3648             ;;
3649     esac
3650
3651 elif enabled avr32; then
3652
3653     case $cpu in
3654         ap7[02]0[0-2])
3655             subarch="avr32_ap"
3656             cpuflags="-mpart=$cpu"
3657         ;;
3658         ap)
3659             subarch="avr32_ap"
3660             cpuflags="-march=$cpu"
3661         ;;
3662         uc3[ab]*)
3663             subarch="avr32_uc"
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666         uc)
3667             subarch="avr32_uc"
3668             cpuflags="-march=$cpu"
3669         ;;
3670     esac
3671
3672 elif enabled bfin; then
3673
3674     cpuflags="-mcpu=$cpu"
3675
3676 elif enabled mips; then
3677
3678     cpuflags="-march=$cpu"
3679
3680     case $cpu in
3681         24kc)
3682             disable mipsfpu
3683             disable mipsdspr1
3684             disable mipsdspr2
3685         ;;
3686         24kf*)
3687             disable mipsdspr1
3688             disable mipsdspr2
3689         ;;
3690         24kec|34kc|1004kc)
3691             disable mipsfpu
3692             disable mipsdspr2
3693         ;;
3694         24kef*|34kf*|1004kf*)
3695             disable mipsdspr2
3696         ;;
3697         74kc)
3698             disable mipsfpu
3699         ;;
3700     esac
3701
3702 elif enabled ppc; then
3703
3704     disable ldbrx
3705     disable vsx
3706
3707     case $(tolower $cpu) in
3708         601|ppc601|powerpc601)
3709             cpuflags="-mcpu=601"
3710             disable altivec
3711         ;;
3712         603*|ppc603*|powerpc603*)
3713             cpuflags="-mcpu=603"
3714             disable altivec
3715         ;;
3716         604*|ppc604*|powerpc604*)
3717             cpuflags="-mcpu=604"
3718             disable altivec
3719         ;;
3720         g3|75*|ppc75*|powerpc75*)
3721             cpuflags="-mcpu=750"
3722             disable altivec
3723         ;;
3724         g4|745*|ppc745*|powerpc745*)
3725             cpuflags="-mcpu=7450"
3726         ;;
3727         74*|ppc74*|powerpc74*)
3728             cpuflags="-mcpu=7400"
3729         ;;
3730         g5|970|ppc970|powerpc970)
3731             cpuflags="-mcpu=970"
3732         ;;
3733         power[3-8]*)
3734             cpuflags="-mcpu=$cpu"
3735         ;;
3736         cell)
3737             cpuflags="-mcpu=cell"
3738             enable ldbrx
3739         ;;
3740         e500mc)
3741             cpuflags="-mcpu=e500mc"
3742             disable altivec
3743         ;;
3744         e500v2)
3745             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3746             disable altivec
3747             disable dcbzl
3748         ;;
3749         e500)
3750             cpuflags="-mcpu=8540 -mhard-float"
3751             disable altivec
3752             disable dcbzl
3753         ;;
3754     esac
3755
3756 elif enabled sparc; then
3757
3758     case $cpu in
3759         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3760             cpuflags="-mcpu=$cpu"
3761         ;;
3762         ultrasparc*|niagara[234])
3763             cpuflags="-mcpu=$cpu"
3764         ;;
3765     esac
3766
3767 elif enabled x86; then
3768
3769     case $cpu in
3770         i[345]86|pentium)
3771             cpuflags="-march=$cpu"
3772             disable mmx
3773         ;;
3774         # targets that do NOT support nopl and conditional mov (cmov)
3775         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3776             cpuflags="-march=$cpu"
3777             disable i686
3778         ;;
3779         # targets that do support nopl and conditional mov (cmov)
3780         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3781         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3782             cpuflags="-march=$cpu"
3783             enable i686
3784             enable fast_cmov
3785         ;;
3786         # targets that do support conditional mov but on which it's slow
3787         pentium4|pentium4m|prescott|nocona)
3788             cpuflags="-march=$cpu"
3789             enable i686
3790             disable fast_cmov
3791         ;;
3792     esac
3793
3794 fi
3795
3796 if [ "$cpu" != generic ]; then
3797     add_cflags  $cpuflags
3798     add_asflags $cpuflags
3799 fi
3800
3801 # compiler sanity check
3802 check_exec <<EOF
3803 int main(void){ return 0; }
3804 EOF
3805 if test "$?" != 0; then
3806     echo "$cc is unable to create an executable file."
3807     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3808         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3809         echo "Only do this if you know what cross compiling means."
3810     fi
3811     die "C compiler test failed."
3812 fi
3813
3814 add_cppflags -D_ISOC99_SOURCE
3815 add_cxxflags -D__STDC_CONSTANT_MACROS
3816 check_cflags -std=c99
3817 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3818 #include <stdlib.h>
3819 EOF
3820 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3821 #include <stdlib.h>
3822 EOF
3823
3824 add_host_cppflags -D_ISOC99_SOURCE
3825 check_host_cflags -std=c99
3826 check_host_cflags -Wall
3827 check_host_cflags -O3
3828
3829 check_64bit(){
3830     arch32=$1
3831     arch64=$2
3832     expr=$3
3833     check_code cc "" "int test[2*($expr) - 1]" &&
3834         subarch=$arch64 || subarch=$arch32
3835 }
3836
3837 case "$arch" in
3838     aarch64|alpha|ia64)
3839         spic=$shared
3840     ;;
3841     mips)
3842         check_64bit mips mips64 '_MIPS_SIM > 1'
3843         spic=$shared
3844     ;;
3845     parisc)
3846         check_64bit parisc parisc64 'sizeof(void *) > 4'
3847         spic=$shared
3848     ;;
3849     ppc)
3850         check_64bit ppc ppc64 'sizeof(void *) > 4'
3851         spic=$shared
3852     ;;
3853     s390)
3854         check_64bit s390 s390x 'sizeof(void *) > 4'
3855         spic=$shared
3856     ;;
3857     sparc)
3858         check_64bit sparc sparc64 'sizeof(void *) > 4'
3859         spic=$shared
3860     ;;
3861     x86)
3862         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3863         if test "$subarch" = "x86_64"; then
3864             spic=$shared
3865         fi
3866     ;;
3867     ppc)
3868         check_cc <<EOF && subarch="ppc64"
3869         int test[(int)sizeof(char*) - 7];
3870 EOF
3871     ;;
3872 esac
3873
3874 enable $subarch
3875 enabled spic && enable_weak pic
3876
3877 # OS specific
3878 case $target_os in
3879     aix)
3880         SHFLAGS=-shared
3881         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3882         enabled shared && add_ldflags -Wl,-brtl
3883         ;;
3884     android)
3885         disable symver
3886         SLIB_INSTALL_NAME='$(SLIBNAME)'
3887         SLIB_INSTALL_LINKS=
3888         # soname not set on purpose
3889         SHFLAGS=-shared
3890         ;;
3891     haiku)
3892         prefix_default="/boot/common"
3893         network_extralibs="-lnetwork"
3894         host_libs=
3895         ;;
3896     sunos)
3897         SHFLAGS='-shared -Wl,-h,$$(@F)'
3898         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3899         network_extralibs="-lsocket -lnsl"
3900         # When using suncc to build, the Solaris linker will mark
3901         # an executable with each instruction set encountered by
3902         # the Solaris assembler.  As our libraries contain their own
3903         # guards for processor-specific code, instead suppress
3904         # generation of the HWCAPS ELF section on Solaris x86 only.
3905         enabled_all suncc x86 &&
3906             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3907             add_ldflags -Wl,-M,mapfile
3908         nm_default='nm -P -g'
3909         ;;
3910     netbsd)
3911         disable symver
3912         oss_indev_extralibs="-lossaudio"
3913         oss_outdev_extralibs="-lossaudio"
3914         enabled gcc || check_ldflags -Wl,-zmuldefs
3915         ;;
3916     openbsd|bitrig)
3917         disable symver
3918         SHFLAGS='-shared'
3919         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3920         SLIB_INSTALL_LINKS=
3921         oss_indev_extralibs="-lossaudio"
3922         oss_outdev_extralibs="-lossaudio"
3923         ;;
3924     dragonfly)
3925         disable symver
3926         ;;
3927     freebsd)
3928         ;;
3929     bsd/os)
3930         add_extralibs -lpoll -lgnugetopt
3931         strip="strip -d"
3932         ;;
3933     darwin)
3934         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3935         enabled ppc && add_asflags -force_cpusubtype_ALL
3936         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3937         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3938         strip="${strip} -x"
3939         add_ldflags -Wl,-dynamic,-search_paths_first
3940         SLIBSUF=".dylib"
3941         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3942         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3943         objformat="macho"
3944         enabled x86_64 && objformat="macho64"
3945         enabled_any pic shared ||
3946             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3947         ;;
3948     mingw32*)
3949         if test $target_os = "mingw32ce"; then
3950             disable network
3951         else
3952             target_os=mingw32
3953         fi
3954         LIBTARGET=i386
3955         if enabled x86_64; then
3956             LIBTARGET="i386:x86-64"
3957         elif enabled arm; then
3958             LIBTARGET=arm-wince
3959         fi
3960         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3961         check_ldflags -Wl,--nxcompat
3962         check_ldflags -Wl,--dynamicbase
3963         shlibdir_default="$bindir_default"
3964         SLIBPREF=""
3965         SLIBSUF=".dll"
3966         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3967         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3968         dlltool="${cross_prefix}dlltool"
3969         if check_cmd lib.exe -list; then
3970             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3971             if enabled x86_64; then
3972                 LIBTARGET=x64
3973             fi
3974         elif check_cmd $dlltool --version; then
3975             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3976         fi
3977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3978         SLIB_INSTALL_LINKS=
3979         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3980         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3981         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3982         objformat="win32"
3983         ranlib=:
3984         enable dos_paths
3985         ;;
3986     win32|win64)
3987         disable symver
3988         if enabled shared; then
3989             # Link to the import library instead of the normal static library
3990             # for shared libs.
3991             LD_LIB='%.lib'
3992             # Cannot build both shared and static libs with MSVC or icl.
3993             disable static
3994         fi
3995         shlibdir_default="$bindir_default"
3996         SLIBPREF=""
3997         SLIBSUF=".dll"
3998         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3999         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4000         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4001         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4002         SLIB_INSTALL_LINKS=
4003         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4004         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4005         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4006         objformat="win32"
4007         ranlib=:
4008         enable dos_paths
4009         ;;
4010     cygwin*)
4011         target_os=cygwin
4012         shlibdir_default="$bindir_default"
4013         SLIBPREF="cyg"
4014         SLIBSUF=".dll"
4015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4017         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4018         SLIB_INSTALL_LINKS=
4019         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4020         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4021         objformat="win32"
4022         enable dos_paths
4023         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4024         ;;
4025     *-dos|freedos|opendos)
4026         network_extralibs="-lsocket"
4027         objformat="coff"
4028         enable dos_paths
4029         add_cppflags -U__STRICT_ANSI__
4030         ;;
4031     linux)
4032         enable dv1394
4033         ;;
4034     irix*)
4035         target_os=irix
4036         ranlib="echo ignoring ranlib"
4037         ;;
4038     os/2*)
4039         strip="lxlite -CS"
4040         ln_s="cp -f"
4041         objformat="aout"
4042         add_cppflags -D_GNU_SOURCE
4043         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4044         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4045         LIBSUF="_s.a"
4046         SLIBPREF=""
4047         SLIBSUF=".dll"
4048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4050         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4051             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4052             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4053             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4054             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4055             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4056         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4057             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4058         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'