Merge commit 'be039278b5ebd8075d90a3508db2aed5adf59e02'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --enable-vda             enable VDA code
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-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 [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
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
317 Optimization options (experts only):
318   --disable-asm            disable all assembler optimizations
319   --disable-altivec        disable AltiVec optimizations
320   --disable-amd3dnow       disable 3DNow! optimizations
321   --disable-amd3dnowext    disable 3DNow! extended optimizations
322   --disable-mmx            disable MMX optimizations
323   --disable-mmxext         disable MMXEXT optimizations
324   --disable-sse            disable SSE optimizations
325   --disable-sse2           disable SSE2 optimizations
326   --disable-sse3           disable SSE3 optimizations
327   --disable-ssse3          disable SSSE3 optimizations
328   --disable-sse4           disable SSE4 optimizations
329   --disable-sse42          disable SSE4.2 optimizations
330   --disable-avx            disable AVX optimizations
331   --disable-xop            disable XOP optimizations
332   --disable-fma3           disable FMA3 optimizations
333   --disable-fma4           disable FMA4 optimizations
334   --disable-avx2           disable AVX2 optimizations
335   --disable-armv5te        disable armv5te optimizations
336   --disable-armv6          disable armv6 optimizations
337   --disable-armv6t2        disable armv6t2 optimizations
338   --disable-vfp            disable VFP optimizations
339   --disable-neon           disable NEON optimizations
340   --disable-inline-asm     disable use of inline assembler
341   --disable-yasm           disable use of yasm assembler
342   --disable-mips32r2       disable MIPS32R2 optimizations
343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
345   --disable-mipsfpu        disable floating point MIPS optimizations
346   --disable-fast-unaligned consider unaligned accesses slow
347
348 Developer options (useful when working on FFmpeg itself):
349   --disable-debug          disable debugging symbols
350   --enable-debug=LEVEL     set the debug level [$debuglevel]
351   --disable-optimizations  disable compiler optimizations
352   --enable-extra-warnings  enable more compiler warnings
353   --disable-stripping      disable stripping of executables and shared libraries
354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
355                            2 causes a slowdown at runtime.
356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
358                            leaks and errors, using the specified valgrind binary.
359                            Cannot be combined with --target-exec
360   --enable-ftrapv          Trap arithmetic overflows
361   --samples=PATH           location of test samples for FATE, if not set use
362                            \$FATE_SAMPLES at make invocation time.
363   --enable-neon-clobber-test check NEON registers for clobbering (should be
364                            used only for debugging purposes)
365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
366                            should be used only for debugging purposes)
367   --enable-random          randomly enable/disable components
368   --disable-random
369   --enable-random=LIST     randomly enable/disable specific components or
370   --disable-random=LIST    component groups. LIST is a comma-separated list
371                            of NAME[:PROB] entries where NAME is a component
372                            (group) and PROB the probability associated with
373                            NAME (default 0.5).
374   --random-seed=VALUE      seed value for --enable/disable-random
375
376 NOTE: Object files are built at the place where configure is launched.
377 EOF
378   exit 0
379 }
380
381 quotes='""'
382
383 log(){
384     echo "$@" >> $logfile
385 }
386
387 log_file(){
388     log BEGIN $1
389     pr -n -t $1 >> $logfile
390     log END $1
391 }
392
393 echolog(){
394     log "$@"
395     echo "$@"
396 }
397
398 warn(){
399     log "WARNING: $*"
400     WARNINGS="${WARNINGS}WARNING: $*\n"
401 }
402
403 die(){
404     echolog "$@"
405     cat <<EOF
406
407 If you think configure made a mistake, make sure you are using the latest
408 version from Git.  If the latest version fails, report the problem to the
409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
410 EOF
411     if disabled logging; then
412         cat <<EOF
413 Rerun configure with logging enabled (do not use --disable-logging), and
414 include the log this produces with your report.
415 EOF
416     else
417         cat <<EOF
418 Include the log file "$logfile" produced by configure as this will help
419 solving the problem.
420 EOF
421     fi
422     exit 1
423 }
424
425 # Avoid locale weirdness, besides we really just want to translate ASCII.
426 toupper(){
427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
428 }
429
430 tolower(){
431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
432 }
433
434 c_escape(){
435     echo "$*" | sed 's/["\\]/\\\0/g'
436 }
437
438 sh_quote(){
439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
441     echo "$v"
442 }
443
444 cleanws(){
445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
446 }
447
448 filter(){
449     pat=$1
450     shift
451     for v; do
452         eval "case $v in $pat) echo $v ;; esac"
453     done
454 }
455
456 filter_out(){
457     pat=$1
458     shift
459     for v; do
460         eval "case $v in $pat) ;; *) echo $v ;; esac"
461     done
462 }
463
464 map(){
465     m=$1
466     shift
467     for v; do eval $m; done
468 }
469
470 add_suffix(){
471     suffix=$1
472     shift
473     for v; do echo ${v}${suffix}; done
474 }
475
476 set_all(){
477     value=$1
478     shift
479     for var in $*; do
480         eval $var=$value
481     done
482 }
483
484 set_weak(){
485     value=$1
486     shift
487     for var; do
488         eval : \${$var:=$value}
489     done
490 }
491
492 sanitize_var_name(){
493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
494 }
495
496 set_safe(){
497     var=$1
498     shift
499     eval $(sanitize_var_name "$var")='$*'
500 }
501
502 get_safe(){
503     eval echo \$$(sanitize_var_name "$1")
504 }
505
506 pushvar(){
507     for pvar in $*; do
508         eval level=\${${pvar}_level:=0}
509         eval ${pvar}_${level}="\$$pvar"
510         eval ${pvar}_level=$(($level+1))
511     done
512 }
513
514 popvar(){
515     for pvar in $*; do
516         eval level=\${${pvar}_level:-0}
517         test $level = 0 && continue
518         eval level=$(($level-1))
519         eval $pvar="\${${pvar}_${level}}"
520         eval ${pvar}_level=$level
521         eval unset ${pvar}_${level}
522     done
523 }
524
525 enable(){
526     set_all yes $*
527 }
528
529 disable(){
530     set_all no $*
531 }
532
533 enable_weak(){
534     set_weak yes $*
535 }
536
537 disable_weak(){
538     set_weak no $*
539 }
540
541 enable_safe(){
542     for var; do
543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
544     done
545 }
546
547 disable_safe(){
548     for var; do
549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
550     done
551 }
552
553 do_enable_deep(){
554     for var; do
555         enabled $var && continue
556         eval sel="\$${var}_select"
557         eval sgs="\$${var}_suggest"
558         pushvar var sgs
559         enable_deep $sel
560         popvar sgs
561         enable_deep_weak $sgs
562         popvar var
563     done
564 }
565
566 enable_deep(){
567     do_enable_deep $*
568     enable $*
569 }
570
571 enable_deep_weak(){
572     for var; do
573         disabled $var && continue
574         pushvar var
575         do_enable_deep $var
576         popvar var
577         enable_weak $var
578     done
579 }
580
581 enabled(){
582     test "${1#!}" = "$1" && op== || op=!=
583     eval test "x\$${1#!}" $op "xyes"
584 }
585
586 disabled(){
587     test "${1#!}" = "$1" && op== || op=!=
588     eval test "x\$${1#!}" $op "xno"
589 }
590
591 enabled_all(){
592     for opt; do
593         enabled $opt || return 1
594     done
595 }
596
597 disabled_all(){
598     for opt; do
599         disabled $opt || return 1
600     done
601 }
602
603 enabled_any(){
604     for opt; do
605         enabled $opt && return 0
606     done
607 }
608
609 disabled_any(){
610     for opt; do
611         disabled $opt && return 0
612     done
613     return 1
614 }
615
616 set_default(){
617     for opt; do
618         eval : \${$opt:=\$${opt}_default}
619     done
620 }
621
622 is_in(){
623     value=$1
624     shift
625     for var in $*; do
626         [ $var = $value ] && return 0
627     done
628     return 1
629 }
630
631 do_check_deps(){
632     for cfg; do
633         cfg="${cfg#!}"
634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
635         disabled ${cfg}_checking && continue
636         enable ${cfg}_checking
637         append allopts $cfg
638
639         eval dep_all="\$${cfg}_deps"
640         eval dep_any="\$${cfg}_deps_any"
641         eval dep_sel="\$${cfg}_select"
642         eval dep_sgs="\$${cfg}_suggest"
643         eval dep_ifa="\$${cfg}_if"
644         eval dep_ifn="\$${cfg}_if_any"
645
646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649
650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
652         enabled_all  $dep_all || disable $cfg
653         enabled_any  $dep_any || disable $cfg
654         disabled_any $dep_sel && disable $cfg
655
656         if enabled $cfg; then
657             enable_deep $dep_sel
658             enable_deep_weak $dep_sgs
659         fi
660
661         disable ${cfg}_checking
662     done
663 }
664
665 check_deps(){
666     unset allopts
667
668     do_check_deps "$@"
669
670     for cfg in $allopts; do
671         enabled $cfg || continue
672         eval dep_extralibs="\$${cfg}_extralibs"
673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
674     done
675 }
676
677 print_config(){
678     pfx=$1
679     files=$2
680     shift 2
681     map 'eval echo "$v \${$v:-no}"' "$@" |
682     awk "BEGIN { split(\"$files\", files) }
683         {
684             c = \"$pfx\" toupper(\$1);
685             v = \$2;
686             sub(/yes/, 1, v);
687             sub(/no/,  0, v);
688             for (f in files) {
689                 file = files[f];
690                 if (file ~ /\\.h\$/) {
691                     printf(\"#define %s %d\\n\", c, v) >>file;
692                 } else if (file ~ /\\.asm\$/) {
693                     printf(\"%%define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.mak\$/) {
695                     n = -v ? \"\" : \"!\";
696                     printf(\"%s%s=yes\\n\", n, c) >>file;
697                 } else if (file ~ /\\.texi\$/) {
698                     pre = -v ? \"\" : \"@c \";
699                     yesno = \$2;
700                     c2 = tolower(c);
701                     gsub(/_/, \"-\", c2);
702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
703                 }
704             }
705         }"
706 }
707
708 print_enabled(){
709     suf=$1
710     shift
711     for v; do
712         enabled $v && printf "%s\n" ${v%$suf};
713     done
714 }
715
716 append(){
717     var=$1
718     shift
719     eval "$var=\"\$$var $*\""
720 }
721
722 prepend(){
723     var=$1
724     shift
725     eval "$var=\"$* \$$var\""
726 }
727
728 add_cppflags(){
729     append CPPFLAGS "$@"
730 }
731
732 add_cflags(){
733     append CFLAGS $($cflags_filter "$@")
734 }
735
736 add_cxxflags(){
737     append CXXFLAGS $($cflags_filter "$@")
738 }
739
740 add_asflags(){
741     append ASFLAGS $($asflags_filter "$@")
742 }
743
744 add_ldflags(){
745     append LDFLAGS $($ldflags_filter "$@")
746 }
747
748 add_stripflags(){
749     append ASMSTRIPFLAGS "$@"
750 }
751
752 add_extralibs(){
753     prepend extralibs $($ldflags_filter "$@")
754 }
755
756 add_host_cppflags(){
757     append host_cppflags "$@"
758 }
759
760 add_host_cflags(){
761     append host_cflags $($host_cflags_filter "$@")
762 }
763
764 add_host_ldflags(){
765     append host_ldflags $($host_ldflags_filter "$@")
766 }
767
768 add_compat(){
769     append compat_objs $1
770     shift
771     map 'add_cppflags -D$v' "$@"
772 }
773
774 check_cmd(){
775     log "$@"
776     "$@" >> $logfile 2>&1
777 }
778
779 cc_o(){
780     eval printf '%s\\n' $CC_O
781 }
782
783 cc_e(){
784     eval printf '%s\\n' $CC_E
785 }
786
787 check_cc(){
788     log check_cc "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
792 }
793
794 check_cxx(){
795     log check_cxx "$@"
796     cat > $TMPCPP
797     log_file $TMPCPP
798     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
799 }
800
801 check_cpp(){
802     log check_cpp "$@"
803     cat > $TMPC
804     log_file $TMPC
805     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
806 }
807
808 as_o(){
809     eval printf '%s\\n' $AS_O
810 }
811
812 check_as(){
813     log check_as "$@"
814     cat > $TMPS
815     log_file $TMPS
816     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
817 }
818
819 check_inline_asm(){
820     log check_inline_asm "$@"
821     name="$1"
822     code="$2"
823     shift 2
824     disable $name
825     check_cc "$@" <<EOF && enable $name
826 void foo(void){ __asm__ volatile($code); }
827 EOF
828 }
829
830 check_insn(){
831     log check_insn "$@"
832     check_inline_asm ${1}_inline "\"$2\""
833     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
834 }
835
836 check_yasm(){
837     log check_yasm "$@"
838     echo "$1" > $TMPS
839     log_file $TMPS
840     shift 1
841     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
842 }
843
844 ld_o(){
845     eval printf '%s\\n' $LD_O
846 }
847
848 check_ld(){
849     log check_ld "$@"
850     type=$1
851     shift 1
852     flags=$(filter_out '-l*|*.so' $@)
853     libs=$(filter '-l*|*.so' $@)
854     check_$type $($cflags_filter $flags) || return
855     flags=$($ldflags_filter $flags)
856     libs=$($ldflags_filter $libs)
857     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
858 }
859
860 print_include(){
861     hdr=$1
862     test "${hdr%.h}" = "${hdr}" &&
863         echo "#include $hdr"    ||
864         echo "#include <$hdr>"
865 }
866
867 check_code(){
868     log check_code "$@"
869     check=$1
870     headers=$2
871     code=$3
872     shift 3
873     {
874         for hdr in $headers; do
875             print_include $hdr
876         done
877         echo "int main(void) { $code; return 0; }"
878     } | check_$check "$@"
879 }
880
881 check_cppflags(){
882     log check_cppflags "$@"
883     check_cc "$@" <<EOF && append CPPFLAGS "$@"
884 int x;
885 EOF
886 }
887
888 test_cflags(){
889     log test_cflags "$@"
890     set -- $($cflags_filter "$@")
891     check_cc "$@" <<EOF
892 int x;
893 EOF
894 }
895
896 check_cflags(){
897     log check_cflags "$@"
898     test_cflags "$@" && add_cflags "$@"
899 }
900
901 check_cxxflags(){
902     log check_cxxflags "$@"
903     set -- $($cflags_filter "$@")
904     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
905 int x;
906 EOF
907 }
908
909 test_ldflags(){
910     log test_ldflags "$@"
911     check_ld "cc" "$@" <<EOF
912 int main(void){ return 0; }
913 EOF
914 }
915
916 check_ldflags(){
917     log check_ldflags "$@"
918     test_ldflags "$@" && add_ldflags "$@"
919 }
920
921 test_stripflags(){
922     log test_stripflags "$@"
923     # call check_cc to get a fresh TMPO
924     check_cc <<EOF
925 int main(void) { return 0; }
926 EOF
927     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
928 }
929
930 check_stripflags(){
931     log check_stripflags "$@"
932     test_stripflags "$@" && add_stripflags "$@"
933 }
934
935 check_header(){
936     log check_header "$@"
937     header=$1
938     shift
939     disable_safe $header
940     check_cpp "$@" <<EOF && enable_safe $header
941 #include <$header>
942 int x;
943 EOF
944 }
945
946 check_func(){
947     log check_func "$@"
948     func=$1
949     shift
950     disable $func
951     check_ld "cc" "$@" <<EOF && enable $func
952 extern int $func();
953 int main(void){ $func(); }
954 EOF
955 }
956
957 check_mathfunc(){
958     log check_mathfunc "$@"
959     func=$1
960     narg=$2
961     shift 2
962     test $narg = 2 && args="f, g" || args="f"
963     disable $func
964     check_ld "cc" "$@" <<EOF && enable $func
965 #include <math.h>
966 float foo(float f, float g) { return $func($args); }
967 int main(void){ return (int) foo; }
968 EOF
969 }
970
971 check_func_headers(){
972     log check_func_headers "$@"
973     headers=$1
974     funcs=$2
975     shift 2
976     {
977         for hdr in $headers; do
978             print_include $hdr
979         done
980         for func in $funcs; do
981             echo "long check_$func(void) { return (long) $func; }"
982         done
983         echo "int main(void) { return 0; }"
984     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
985 }
986
987 check_class_headers_cpp(){
988     log check_class_headers_cpp "$@"
989     headers=$1
990     classes=$2
991     shift 2
992     {
993         for hdr in $headers; do
994             echo "#include <$hdr>"
995         done
996         echo "int main(void) { "
997         i=1
998         for class in $classes; do
999             echo "$class obj$i;"
1000             i=$(expr $i + 1)
1001         done
1002         echo "return 0; }"
1003     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1004 }
1005
1006 check_cpp_condition(){
1007     log check_cpp_condition "$@"
1008     header=$1
1009     condition=$2
1010     shift 2
1011     check_cpp "$@" <<EOF
1012 #include <$header>
1013 #if !($condition)
1014 #error "unsatisfied condition: $condition"
1015 #endif
1016 EOF
1017 }
1018
1019 check_lib(){
1020     log check_lib "$@"
1021     header="$1"
1022     func="$2"
1023     shift 2
1024     check_header $header && check_func $func "$@" && add_extralibs "$@"
1025 }
1026
1027 check_lib2(){
1028     log check_lib2 "$@"
1029     headers="$1"
1030     funcs="$2"
1031     shift 2
1032     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1033 }
1034
1035 check_lib_cpp(){
1036     log check_lib_cpp "$@"
1037     headers="$1"
1038     classes="$2"
1039     shift 2
1040     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1041 }
1042
1043 check_pkg_config(){
1044     log check_pkg_config "$@"
1045     pkgandversion="$1"
1046     pkg="${1%% *}"
1047     headers="$2"
1048     funcs="$3"
1049     shift 3
1050     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1051     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1052     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1053     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1054         set_safe ${pkg}_cflags $pkg_cflags   &&
1055         set_safe ${pkg}_libs   $pkg_libs
1056 }
1057
1058 check_exec(){
1059     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1060 }
1061
1062 check_exec_crash(){
1063     code=$(cat)
1064
1065     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1066     # are safe but may not be available everywhere.  Thus we use
1067     # raise(SIGTERM) instead.  The check is run in a subshell so we
1068     # can redirect the "Terminated" message from the shell.  SIGBUS
1069     # is not defined by standard C so it is used conditionally.
1070
1071     (check_exec "$@") >> $logfile 2>&1 <<EOF
1072 #include <signal.h>
1073 static void sighandler(int sig){
1074     raise(SIGTERM);
1075 }
1076 int foo(void){
1077     $code
1078 }
1079 int (*func_ptr)(void) = foo;
1080 int main(void){
1081     signal(SIGILL, sighandler);
1082     signal(SIGFPE, sighandler);
1083     signal(SIGSEGV, sighandler);
1084 #ifdef SIGBUS
1085     signal(SIGBUS, sighandler);
1086 #endif
1087     return func_ptr();
1088 }
1089 EOF
1090 }
1091
1092 check_type(){
1093     log check_type "$@"
1094     headers=$1
1095     type=$2
1096     shift 2
1097     disable_safe "$type"
1098     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1099 }
1100
1101 check_struct(){
1102     log check_struct "$@"
1103     headers=$1
1104     struct=$2
1105     member=$3
1106     shift 3
1107     disable_safe "${struct}_${member}"
1108     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1109         enable_safe "${struct}_${member}"
1110 }
1111
1112 check_builtin(){
1113     log check_builtin "$@"
1114     name=$1
1115     headers=$2
1116     builtin=$3
1117     shift 3
1118     disable "$name"
1119     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1120 }
1121
1122 check_compile_assert(){
1123     log check_compile_assert "$@"
1124     name=$1
1125     headers=$2
1126     condition=$3
1127     shift 3
1128     disable "$name"
1129     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1130 }
1131
1132 require(){
1133     name="$1"
1134     header="$2"
1135     func="$3"
1136     shift 3
1137     check_lib $header $func "$@" || die "ERROR: $name not found"
1138 }
1139
1140 require2(){
1141     name="$1"
1142     headers="$2"
1143     func="$3"
1144     shift 3
1145     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1146 }
1147
1148 require_cpp(){
1149     name="$1"
1150     headers="$2"
1151     classes="$3"
1152     shift 3
1153     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1154 }
1155
1156 require_pkg_config(){
1157     pkg="$1"
1158     check_pkg_config "$@" || die "ERROR: $pkg not found"
1159     add_cflags    $(get_safe ${pkg}_cflags)
1160     add_extralibs $(get_safe ${pkg}_libs)
1161 }
1162
1163 require_libfreetype(){
1164     log require_libfreetype "$@"
1165     pkg="freetype2"
1166     check_cmd $pkg_config --exists --print-errors $pkg \
1167       || die "ERROR: $pkg not found"
1168     pkg_cflags=$($pkg_config --cflags $pkg)
1169     pkg_libs=$($pkg_config --libs $pkg)
1170     {
1171         echo "#include <ft2build.h>"
1172         echo "#include FT_FREETYPE_H"
1173         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1174         echo "int main(void) { return 0; }"
1175     } | check_ld "cc" $pkg_cflags $pkg_libs \
1176       && set_safe ${pkg}_cflags $pkg_cflags \
1177       && set_safe ${pkg}_libs   $pkg_libs \
1178       || die "ERROR: $pkg not found"
1179     add_cflags    $(get_safe ${pkg}_cflags)
1180     add_extralibs $(get_safe ${pkg}_libs)
1181 }
1182
1183 hostcc_e(){
1184     eval printf '%s\\n' $HOSTCC_E
1185 }
1186
1187 hostcc_o(){
1188     eval printf '%s\\n' $HOSTCC_O
1189 }
1190
1191 check_host_cc(){
1192     log check_host_cc "$@"
1193     cat > $TMPC
1194     log_file $TMPC
1195     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1196 }
1197
1198 check_host_cpp(){
1199     log check_host_cpp "$@"
1200     cat > $TMPC
1201     log_file $TMPC
1202     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1203 }
1204
1205 check_host_cppflags(){
1206     log check_host_cppflags "$@"
1207     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1208 int x;
1209 EOF
1210 }
1211
1212 check_host_cflags(){
1213     log check_host_cflags "$@"
1214     set -- $($host_cflags_filter "$@")
1215     check_host_cc "$@" <<EOF && append host_cflags "$@"
1216 int x;
1217 EOF
1218 }
1219
1220 check_host_cpp_condition(){
1221     log check_host_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_host_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 apply(){
1234     file=$1
1235     shift
1236     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1237 }
1238
1239 cp_if_changed(){
1240     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1241     mkdir -p "$(dirname $2)"
1242     $cp_f "$1" "$2"
1243 }
1244
1245 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1246 # system-dependent things.
1247
1248 COMPONENT_LIST="
1249     bsfs
1250     decoders
1251     demuxers
1252     encoders
1253     filters
1254     hwaccels
1255     indevs
1256     muxers
1257     outdevs
1258     parsers
1259     protocols
1260 "
1261
1262 EXAMPLE_LIST="
1263     avio_reading_example
1264     avcodec_example
1265     demuxing_decoding_example
1266     filter_audio_example
1267     filtering_audio_example
1268     filtering_video_example
1269     metadata_example
1270     muxing_example
1271     remuxing_example
1272     resampling_audio_example
1273     scaling_video_example
1274     transcode_aac_example
1275 "
1276
1277 EXTERNAL_LIBRARY_LIST="
1278     avisynth
1279     bzlib
1280     crystalhd
1281     decklink
1282     fontconfig
1283     frei0r
1284     gnutls
1285     iconv
1286     ladspa
1287     libaacplus
1288     libass
1289     libbluray
1290     libcaca
1291     libcdio
1292     libcelt
1293     libdc1394
1294     libfaac
1295     libfdk_aac
1296     libflite
1297     libfreetype
1298     libgme
1299     libgsm
1300     libiec61883
1301     libilbc
1302     libmodplug
1303     libmp3lame
1304     libnut
1305     libopencore_amrnb
1306     libopencore_amrwb
1307     libopencv
1308     libopenjpeg
1309     libopus
1310     libpulse
1311     libquvi
1312     librtmp
1313     libschroedinger
1314     libshine
1315     libsoxr
1316     libspeex
1317     libssh
1318     libstagefright_h264
1319     libtheora
1320     libtwolame
1321     libutvideo
1322     libv4l2
1323     libvidstab
1324     libvo_aacenc
1325     libvo_amrwbenc
1326     libvorbis
1327     libvpx
1328     libwavpack
1329     libwebp
1330     libx264
1331     libx265
1332     libxavs
1333     libxvid
1334     libzmq
1335     libzvbi
1336     openal
1337     opencl
1338     opengl
1339     openssl
1340     x11grab
1341     xlib
1342     zlib
1343 "
1344
1345 DOCUMENT_LIST="
1346     doc
1347     htmlpages
1348     manpages
1349     podpages
1350     txtpages
1351 "
1352
1353 FEATURE_LIST="
1354     ftrapv
1355     gray
1356     hardcoded_tables
1357     runtime_cpudetect
1358     safe_bitstream_reader
1359     shared
1360     small
1361     sram
1362     static
1363     swscale_alpha
1364 "
1365
1366 HWACCEL_LIST="
1367     dxva2
1368     vaapi
1369     vda
1370     vdpau
1371     xvmc
1372 "
1373
1374 LIBRARY_LIST="
1375     avcodec
1376     avdevice
1377     avfilter
1378     avformat
1379     avresample
1380     avutil
1381     postproc
1382     swresample
1383     swscale
1384 "
1385
1386 LICENSE_LIST="
1387     gpl
1388     nonfree
1389     version3
1390 "
1391
1392 PROGRAM_LIST="
1393     ffplay
1394     ffprobe
1395     ffserver
1396     ffmpeg
1397 "
1398
1399 SUBSYSTEM_LIST="
1400     dct
1401     dwt
1402     error_resilience
1403     fast_unaligned
1404     fft
1405     lsp
1406     lzo
1407     mdct
1408     network
1409     rdft
1410 "
1411
1412 CONFIG_LIST="
1413     $COMPONENT_LIST
1414     $DOCUMENT_LIST
1415     $EXAMPLE_LIST
1416     $EXTERNAL_LIBRARY_LIST
1417     $FEATURE_LIST
1418     $HWACCEL_LIST
1419     $LICENSE_LIST
1420     $LIBRARY_LIST
1421     $PROGRAM_LIST
1422     $SUBSYSTEM_LIST
1423     incompatible_libav_abi
1424     incompatible_fork_abi
1425     memalign_hack
1426     memory_poisoning
1427     neon_clobber_test
1428     pic
1429     pod2man
1430     raise_major
1431     thumb
1432     xmm_clobber_test
1433 "
1434
1435 THREADS_LIST="
1436     pthreads
1437     os2threads
1438     w32threads
1439 "
1440
1441 ATOMICS_LIST="
1442     atomics_gcc
1443     atomics_suncc
1444     atomics_win32
1445 "
1446
1447 ARCH_LIST="
1448     aarch64
1449     alpha
1450     arm
1451     avr32
1452     avr32_ap
1453     avr32_uc
1454     bfin
1455     ia64
1456     m68k
1457     mips
1458     mips64
1459     parisc
1460     ppc
1461     ppc64
1462     s390
1463     sh4
1464     sparc
1465     sparc64
1466     tilegx
1467     tilepro
1468     tomi
1469     x86
1470     x86_32
1471     x86_64
1472 "
1473
1474 ARCH_EXT_LIST_ARM="
1475     armv5te
1476     armv6
1477     armv6t2
1478     neon
1479     vfp
1480     vfpv3
1481 "
1482
1483 ARCH_EXT_LIST_MIPS="
1484     mipsfpu
1485     mips32r2
1486     mipsdspr1
1487     mipsdspr2
1488 "
1489
1490 ARCH_EXT_LIST_X86_SIMD="
1491     amd3dnow
1492     amd3dnowext
1493     avx
1494     avx2
1495     fma3
1496     fma4
1497     mmx
1498     mmxext
1499     sse
1500     sse2
1501     sse3
1502     sse4
1503     sse42
1504     ssse3
1505     xop
1506 "
1507
1508 ARCH_EXT_LIST_PPC="
1509     altivec
1510     dcbzl
1511     ldbrx
1512     ppc4xx
1513 "
1514
1515 ARCH_EXT_LIST_X86="
1516     $ARCH_EXT_LIST_X86_SIMD
1517     cpunop
1518     i686
1519 "
1520
1521 ARCH_EXT_LIST="
1522     $ARCH_EXT_LIST_ARM
1523     $ARCH_EXT_LIST_PPC
1524     $ARCH_EXT_LIST_X86
1525     $ARCH_EXT_LIST_MIPS
1526     loongson
1527 "
1528
1529 ARCH_FEATURES="
1530     aligned_stack
1531     fast_64bit
1532     fast_clz
1533     fast_cmov
1534     local_aligned_8
1535     local_aligned_16
1536 "
1537
1538 BUILTIN_LIST="
1539     atomic_cas_ptr
1540     machine_rw_barrier
1541     MemoryBarrier
1542     mm_empty
1543     rdtsc
1544     sarestart
1545     sync_val_compare_and_swap
1546 "
1547 HAVE_LIST_CMDLINE="
1548     inline_asm
1549     symver
1550     yasm
1551 "
1552
1553 HAVE_LIST_PUB="
1554     bigendian
1555     fast_unaligned
1556     incompatible_libav_abi
1557     incompatible_fork_abi
1558 "
1559
1560 HEADERS_LIST="
1561     alsa_asoundlib_h
1562     altivec_h
1563     arpa_inet_h
1564     asm_types_h
1565     cdio_paranoia_h
1566     cdio_paranoia_paranoia_h
1567     CL_cl_h
1568     dev_bktr_ioctl_bt848_h
1569     dev_bktr_ioctl_meteor_h
1570     dev_ic_bt8xx_h
1571     dev_video_bktr_ioctl_bt848_h
1572     dev_video_meteor_ioctl_meteor_h
1573     direct_h
1574     dlfcn_h
1575     dxva_h
1576     ES2_gl_h
1577     gsm_h
1578     io_h
1579     mach_mach_time_h
1580     machine_ioctl_bt848_h
1581     machine_ioctl_meteor_h
1582     malloc_h
1583     openjpeg_1_5_openjpeg_h
1584     OpenGL_gl3_h
1585     poll_h
1586     sndio_h
1587     soundcard_h
1588     sys_mman_h
1589     sys_param_h
1590     sys_resource_h
1591     sys_select_h
1592     sys_soundcard_h
1593     sys_time_h
1594     sys_un_h
1595     sys_videoio_h
1596     termios_h
1597     unistd_h
1598     windows_h
1599     winsock2_h
1600 "
1601
1602 MATH_FUNCS="
1603     atanf
1604     atan2f
1605     cbrt
1606     cbrtf
1607     cosf
1608     exp2
1609     exp2f
1610     expf
1611     isinf
1612     isnan
1613     ldexpf
1614     llrint
1615     llrintf
1616     log2
1617     log2f
1618     log10f
1619     lrint
1620     lrintf
1621     powf
1622     rint
1623     round
1624     roundf
1625     sinf
1626     trunc
1627     truncf
1628 "
1629
1630 SYSTEM_FUNCS="
1631     access
1632     aligned_malloc
1633     clock_gettime
1634     closesocket
1635     CommandLineToArgvW
1636     CryptGenRandom
1637     dlopen
1638     fcntl
1639     flt_lim
1640     fork
1641     getaddrinfo
1642     gethrtime
1643     getopt
1644     GetProcessAffinityMask
1645     GetProcessMemoryInfo
1646     GetProcessTimes
1647     getrusage
1648     getservbyport
1649     GetSystemTimeAsFileTime
1650     gettimeofday
1651     glob
1652     glXGetProcAddress
1653     inet_aton
1654     isatty
1655     jack_port_get_latency_range
1656     kbhit
1657     localtime_r
1658     lzo1x_999_compress
1659     mach_absolute_time
1660     MapViewOfFile
1661     memalign
1662     mkstemp
1663     mmap
1664     mprotect
1665     nanosleep
1666     PeekNamedPipe
1667     posix_memalign
1668     pthread_cancel
1669     sched_getaffinity
1670     SetConsoleTextAttribute
1671     setmode
1672     setrlimit
1673     Sleep
1674     strerror_r
1675     sysconf
1676     sysctl
1677     usleep
1678     VirtualAlloc
1679     wglGetProcAddress
1680 "
1681
1682 TOOLCHAIN_FEATURES="
1683     asm_mod_q
1684     attribute_may_alias
1685     attribute_packed
1686     ebp_available
1687     ebx_available
1688     gnu_as
1689     gnu_windres
1690     ibm_asm
1691     inline_asm_labels
1692     pragma_deprecated
1693     rsync_contimeout
1694     symver_asm_label
1695     symver_gnu_asm
1696     vfp_args
1697     xform_asm
1698     xmm_clobbers
1699 "
1700
1701 TYPES_LIST="
1702     socklen_t
1703     struct_addrinfo
1704     struct_group_source_req
1705     struct_ip_mreq_source
1706     struct_ipv6_mreq
1707     struct_pollfd
1708     struct_rusage_ru_maxrss
1709     struct_sctp_event_subscribe
1710     struct_sockaddr_in6
1711     struct_sockaddr_sa_len
1712     struct_sockaddr_storage
1713     struct_stat_st_mtim_tv_nsec
1714     struct_v4l2_frmivalenum_discrete
1715 "
1716
1717 HAVE_LIST="
1718     $ARCH_EXT_LIST
1719     $(add_suffix _external $ARCH_EXT_LIST)
1720     $(add_suffix _inline   $ARCH_EXT_LIST)
1721     $ARCH_FEATURES
1722     $ATOMICS_LIST
1723     $BUILTIN_LIST
1724     $HAVE_LIST_CMDLINE
1725     $HAVE_LIST_PUB
1726     $HEADERS_LIST
1727     $MATH_FUNCS
1728     $SYSTEM_FUNCS
1729     $THREADS_LIST
1730     $TOOLCHAIN_FEATURES
1731     $TYPES_LIST
1732     atomics_native
1733     dos_paths
1734     libc_msvcrt
1735     libdc1394_1
1736     libdc1394_2
1737     makeinfo
1738     perl
1739     pod2man
1740     sdl
1741     texi2html
1742     threads
1743     vdpau_x11
1744     xlib
1745 "
1746
1747 # options emitted with CONFIG_ prefix but not available on the command line
1748 CONFIG_EXTRA="
1749     aandcttables
1750     ac3dsp
1751     audio_frame_queue
1752     dsputil
1753     exif
1754     frame_thread_encoder
1755     gcrypt
1756     golomb
1757     gplv3
1758     h263dsp
1759     h264chroma
1760     h264dsp
1761     h264pred
1762     h264qpel
1763     hpeldsp
1764     huffman
1765     intrax8
1766     lgplv3
1767     llviddsp
1768     lpc
1769     mpegaudio
1770     mpegaudiodsp
1771     mpegvideo
1772     mpegvideoenc
1773     nettle
1774     rangecoder
1775     riffdec
1776     riffenc
1777     rtpdec
1778     rtpenc_chain
1779     sinewin
1780     videodsp
1781     vp3dsp
1782 "
1783
1784 CMDLINE_SELECT="
1785     $ARCH_EXT_LIST
1786     $CONFIG_LIST
1787     $HAVE_LIST_CMDLINE
1788     $THREADS_LIST
1789     asm
1790     cross_compile
1791     debug
1792     extra_warnings
1793     logging
1794     lto
1795     optimizations
1796     rpath
1797     stripping
1798 "
1799
1800 PATHS_LIST="
1801     bindir
1802     datadir
1803     docdir
1804     incdir
1805     libdir
1806     mandir
1807     prefix
1808     shlibdir
1809 "
1810
1811 CMDLINE_SET="
1812     $PATHS_LIST
1813     ar
1814     arch
1815     as
1816     assert_level
1817     build_suffix
1818     cc
1819     cpu
1820     cross_prefix
1821     cxx
1822     dep_cc
1823     extra_version
1824     host_cc
1825     host_cflags
1826     host_ld
1827     host_ldflags
1828     host_libs
1829     host_os
1830     install
1831     ld
1832     logfile
1833     malloc_prefix
1834     nm
1835     optflags
1836     pkg_config
1837     pkg_config_flags
1838     progs_suffix
1839     random_seed
1840     samples
1841     strip
1842     sysinclude
1843     sysroot
1844     target_exec
1845     target_os
1846     target_path
1847     target_samples
1848     tempprefix
1849     toolchain
1850     valgrind
1851     yasmexe
1852 "
1853
1854 CMDLINE_APPEND="
1855     extra_cflags
1856     extra_cxxflags
1857     host_cppflags
1858 "
1859
1860 # code dependency declarations
1861
1862 # architecture extensions
1863
1864 armv5te_deps="arm"
1865 armv6_deps="arm"
1866 armv6t2_deps="arm"
1867 neon_deps_any="aarch64 arm"
1868 vfp_deps_any="aarch64 arm"
1869 vfpv3_deps="vfp"
1870
1871 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1872
1873 mipsfpu_deps="mips"
1874 mips32r2_deps="mips"
1875 mipsdspr1_deps="mips"
1876 mipsdspr2_deps="mips"
1877
1878 altivec_deps="ppc"
1879 ppc4xx_deps="ppc"
1880
1881 cpunop_deps="i686"
1882 x86_64_select="i686"
1883 x86_64_suggest="fast_cmov"
1884
1885 amd3dnow_deps="mmx"
1886 amd3dnowext_deps="amd3dnow"
1887 i686_deps="x86"
1888 mmx_deps="x86"
1889 mmxext_deps="mmx"
1890 sse_deps="mmxext"
1891 sse2_deps="sse"
1892 sse3_deps="sse2"
1893 ssse3_deps="sse3"
1894 sse4_deps="ssse3"
1895 sse42_deps="sse4"
1896 avx_deps="sse42"
1897 xop_deps="avx"
1898 fma3_deps="avx"
1899 fma4_deps="avx"
1900 avx2_deps="avx"
1901
1902 mmx_external_deps="yasm"
1903 mmx_inline_deps="inline_asm"
1904 mmx_suggest="mmx_external mmx_inline"
1905
1906 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1907     eval dep=\$${ext}_deps
1908     eval ${ext}_external_deps='"${dep}_external"'
1909     eval ${ext}_inline_deps='"${dep}_inline"'
1910     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1911 done
1912
1913 aligned_stack_if_any="aarch64 ppc x86"
1914 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1915 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1916 fast_unaligned_if_any="aarch64 ppc x86"
1917
1918 need_memalign="altivec neon sse"
1919
1920 # system capabilities
1921 log2_deps="!libc_msvcrt"
1922
1923 symver_if_any="symver_asm_label symver_gnu_asm"
1924
1925 # threading support
1926 atomics_gcc_if="sync_val_compare_and_swap"
1927 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1928 atomics_win32_if="MemoryBarrier"
1929 atomics_native_if_any="$ATOMICS_LIST"
1930 w32threads_deps="atomics_native"
1931 threads_if_any="$THREADS_LIST"
1932
1933 # subsystems
1934 dct_select="rdft"
1935 error_resilience_select="dsputil"
1936 frame_thread_encoder_deps="encoders threads"
1937 mdct_select="fft"
1938 rdft_select="fft"
1939 mpegaudio_select="mpegaudiodsp"
1940 mpegaudiodsp_select="dct"
1941 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1942 mpegvideoenc_select="dsputil mpegvideo"
1943
1944 # decoders / encoders
1945 aac_decoder_select="mdct sinewin"
1946 aac_encoder_select="audio_frame_queue mdct sinewin"
1947 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1948 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1949 ac3_encoder_select="mdct ac3dsp dsputil"
1950 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1951 aic_decoder_select="dsputil golomb"
1952 alac_encoder_select="lpc"
1953 als_decoder_select="dsputil"
1954 amrnb_decoder_select="lsp"
1955 amrwb_decoder_select="lsp"
1956 amv_decoder_select="sp5x_decoder exif"
1957 amv_encoder_select="aandcttables"
1958 ape_decoder_select="dsputil"
1959 asv1_decoder_select="dsputil"
1960 asv1_encoder_select="dsputil"
1961 asv2_decoder_select="dsputil"
1962 asv2_encoder_select="dsputil"
1963 atrac1_decoder_select="mdct sinewin"
1964 atrac3_decoder_select="mdct"
1965 atrac3p_decoder_select="mdct sinewin"
1966 avrn_decoder_select="exif"
1967 bink_decoder_select="dsputil hpeldsp"
1968 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1969 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1970 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1971 cllc_decoder_select="dsputil"
1972 comfortnoise_encoder_select="lpc"
1973 cook_decoder_select="dsputil mdct sinewin"
1974 cscd_decoder_select="lzo"
1975 cscd_decoder_suggest="zlib"
1976 dca_decoder_select="mdct"
1977 dirac_decoder_select="dsputil dwt golomb videodsp"
1978 dnxhd_decoder_select="dsputil"
1979 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1980 dvvideo_decoder_select="dsputil"
1981 dvvideo_encoder_select="dsputil"
1982 dxa_decoder_select="zlib"
1983 eac3_decoder_select="ac3_decoder"
1984 eac3_encoder_select="ac3_encoder"
1985 eamad_decoder_select="aandcttables dsputil mpegvideo"
1986 eatgq_decoder_select="aandcttables"
1987 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1988 exr_decoder_select="zlib"
1989 ffv1_decoder_select="golomb rangecoder"
1990 ffv1_encoder_select="rangecoder"
1991 ffvhuff_decoder_select="huffyuv_decoder"
1992 ffvhuff_encoder_select="huffyuv_encoder"
1993 fic_decoder_select="dsputil golomb"
1994 flac_decoder_select="golomb"
1995 flac_encoder_select="dsputil golomb lpc"
1996 flashsv_decoder_select="zlib"
1997 flashsv_encoder_select="zlib"
1998 flashsv2_encoder_select="zlib"
1999 flashsv2_decoder_select="zlib"
2000 flv_decoder_select="h263_decoder"
2001 flv_encoder_select="h263_encoder"
2002 fourxm_decoder_select="dsputil"
2003 fraps_decoder_select="dsputil huffman"
2004 g2m_decoder_select="dsputil zlib"
2005 g729_decoder_select="dsputil"
2006 h261_decoder_select="error_resilience mpegvideo"
2007 h261_encoder_select="aandcttables mpegvideoenc"
2008 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2009 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2010 h263i_decoder_select="h263_decoder"
2011 h263p_encoder_select="h263_encoder"
2012 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2013 h264_decoder_suggest="error_resilience"
2014 hevc_decoder_select="dsputil golomb videodsp"
2015 huffyuv_decoder_select="dsputil llviddsp"
2016 huffyuv_encoder_select="dsputil huffman llviddsp"
2017 iac_decoder_select="imc_decoder"
2018 imc_decoder_select="dsputil fft mdct sinewin"
2019 indeo3_decoder_select="hpeldsp"
2020 interplay_video_decoder_select="hpeldsp"
2021 jpegls_decoder_select="golomb mjpeg_decoder"
2022 jpegls_encoder_select="golomb"
2023 jv_decoder_select="dsputil"
2024 lagarith_decoder_select="dsputil"
2025 ljpeg_encoder_select="aandcttables mpegvideoenc"
2026 loco_decoder_select="golomb"
2027 mdec_decoder_select="dsputil error_resilience mpegvideo"
2028 metasound_decoder_select="lsp mdct sinewin"
2029 mimic_decoder_select="dsputil hpeldsp"
2030 mjpeg_decoder_select="dsputil hpeldsp exif"
2031 mjpeg_encoder_select="aandcttables mpegvideoenc"
2032 mjpegb_decoder_select="mjpeg_decoder"
2033 mlp_decoder_select="mlp_parser"
2034 motionpixels_decoder_select="dsputil"
2035 mp1_decoder_select="mpegaudio"
2036 mp1float_decoder_select="mpegaudio"
2037 mp2_decoder_select="mpegaudio"
2038 mp2float_decoder_select="mpegaudio"
2039 mp3_decoder_select="mpegaudio"
2040 mp3adu_decoder_select="mpegaudio"
2041 mp3adufloat_decoder_select="mpegaudio"
2042 mp3float_decoder_select="mpegaudio"
2043 mp3on4_decoder_select="mpegaudio"
2044 mp3on4float_decoder_select="mpegaudio"
2045 mpc7_decoder_select="dsputil mpegaudiodsp"
2046 mpc8_decoder_select="mpegaudiodsp"
2047 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2048 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2049 mpeg1video_decoder_select="error_resilience mpegvideo"
2050 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2051 mpeg2video_decoder_select="error_resilience mpegvideo"
2052 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2053 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2054 mpeg4_encoder_select="h263_encoder"
2055 msmpeg4v1_decoder_select="h263_decoder"
2056 msmpeg4v2_decoder_select="h263_decoder"
2057 msmpeg4v2_encoder_select="h263_encoder"
2058 msmpeg4v3_decoder_select="h263_decoder"
2059 msmpeg4v3_encoder_select="h263_encoder"
2060 mss2_decoder_select="error_resilience vc1_decoder"
2061 mxpeg_decoder_select="mjpeg_decoder"
2062 nellymoser_decoder_select="mdct sinewin"
2063 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2064 nuv_decoder_select="dsputil lzo"
2065 png_decoder_select="zlib"
2066 png_encoder_select="dsputil zlib"
2067 prores_decoder_select="dsputil"
2068 prores_encoder_select="dsputil"
2069 qcelp_decoder_select="lsp"
2070 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2071 ra_144_encoder_select="audio_frame_queue lpc"
2072 ralf_decoder_select="golomb"
2073 rtjpeg_decoder_select="dsputil"
2074 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2075 rv10_encoder_select="h263_encoder"
2076 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2077 rv20_encoder_select="h263_encoder"
2078 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2079 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2080 shorten_decoder_select="golomb"
2081 sipr_decoder_select="lsp"
2082 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2083 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2084 sonic_decoder_select="golomb rangecoder"
2085 sonic_encoder_select="golomb rangecoder"
2086 sonic_ls_encoder_select="golomb"
2087 sp5x_decoder_select="mjpeg_decoder"
2088 svq1_decoder_select="hpeldsp"
2089 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2090 svq3_decoder_select="h264_decoder hpeldsp"
2091 svq3_decoder_suggest="zlib"
2092 tak_decoder_select="dsputil"
2093 theora_decoder_select="vp3_decoder"
2094 thp_decoder_select="mjpeg_decoder"
2095 tiff_decoder_suggest="zlib"
2096 tiff_encoder_suggest="zlib"
2097 truehd_decoder_select="mlp_parser"
2098 truemotion2_decoder_select="dsputil"
2099 truespeech_decoder_select="dsputil"
2100 tscc_decoder_select="zlib"
2101 twinvq_decoder_select="mdct lsp sinewin"
2102 utvideo_decoder_select="dsputil"
2103 utvideo_encoder_select="dsputil huffman"
2104 vble_decoder_select="dsputil"
2105 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2106 vc1image_decoder_select="vc1_decoder"
2107 vorbis_decoder_select="mdct"
2108 vorbis_encoder_select="mdct"
2109 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2110 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2111 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2112 vp6a_decoder_select="vp6_decoder"
2113 vp6f_decoder_select="vp6_decoder"
2114 vp8_decoder_select="h264pred videodsp"
2115 vp9_decoder_select="videodsp"
2116 webp_decoder_select="vp8_decoder"
2117 wmapro_decoder_select="mdct sinewin"
2118 wmav1_decoder_select="mdct sinewin"
2119 wmav1_encoder_select="mdct sinewin"
2120 wmav2_decoder_select="mdct sinewin"
2121 wmav2_encoder_select="mdct sinewin"
2122 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2123 wmv1_decoder_select="h263_decoder"
2124 wmv1_encoder_select="h263_encoder"
2125 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2126 wmv2_encoder_select="h263_encoder"
2127 wmv3_decoder_select="vc1_decoder"
2128 wmv3image_decoder_select="wmv3_decoder"
2129 zerocodec_decoder_select="zlib"
2130 zlib_decoder_select="zlib"
2131 zlib_encoder_select="zlib"
2132 zmbv_decoder_select="zlib"
2133 zmbv_encoder_select="zlib"
2134
2135 # hardware accelerators
2136 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2137 dxva2_deps="dxva2api_h"
2138 vaapi_deps="va_va_h"
2139 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2140 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2141 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2142 xvmc_deps="X11_extensions_XvMClib_h"
2143
2144 h263_vaapi_hwaccel_deps="vaapi"
2145 h263_vaapi_hwaccel_select="h263_decoder"
2146 h263_vdpau_hwaccel_deps="vdpau"
2147 h263_vdpau_hwaccel_select="h263_decoder"
2148 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2149 h264_dxva2_hwaccel_deps="dxva2"
2150 h264_dxva2_hwaccel_select="h264_decoder"
2151 h264_vaapi_hwaccel_deps="vaapi"
2152 h264_vaapi_hwaccel_select="h264_decoder"
2153 h264_vda_decoder_deps="vda"
2154 h264_vda_decoder_select="h264_decoder"
2155 h264_vda_hwaccel_deps="vda"
2156 h264_vda_hwaccel_select="h264_decoder"
2157 h264_vdpau_decoder_deps="vdpau"
2158 h264_vdpau_decoder_select="h264_decoder"
2159 h264_vdpau_hwaccel_deps="vdpau"
2160 h264_vdpau_hwaccel_select="h264_decoder"
2161 mpeg_vdpau_decoder_deps="vdpau"
2162 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2163 mpeg_xvmc_hwaccel_deps="xvmc"
2164 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2165 mpeg1_vdpau_decoder_deps="vdpau"
2166 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2167 mpeg1_vdpau_hwaccel_deps="vdpau"
2168 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2169 mpeg1_xvmc_hwaccel_deps="xvmc"
2170 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2171 mpeg2_crystalhd_decoder_select="crystalhd"
2172 mpeg2_dxva2_hwaccel_deps="dxva2"
2173 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2174 mpeg2_vaapi_hwaccel_deps="vaapi"
2175 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2176 mpeg2_vdpau_hwaccel_deps="vdpau"
2177 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2178 mpeg2_xvmc_hwaccel_deps="xvmc"
2179 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2180 mpeg4_crystalhd_decoder_select="crystalhd"
2181 mpeg4_vaapi_hwaccel_deps="vaapi"
2182 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2183 mpeg4_vdpau_decoder_deps="vdpau"
2184 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2185 mpeg4_vdpau_hwaccel_deps="vdpau"
2186 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2187 msmpeg4_crystalhd_decoder_select="crystalhd"
2188 vc1_crystalhd_decoder_select="crystalhd"
2189 vc1_dxva2_hwaccel_deps="dxva2"
2190 vc1_dxva2_hwaccel_select="vc1_decoder"
2191 vc1_vaapi_hwaccel_deps="vaapi"
2192 vc1_vaapi_hwaccel_select="vc1_decoder"
2193 vc1_vdpau_decoder_deps="vdpau"
2194 vc1_vdpau_decoder_select="vc1_decoder"
2195 vc1_vdpau_hwaccel_deps="vdpau"
2196 vc1_vdpau_hwaccel_select="vc1_decoder"
2197 wmv3_crystalhd_decoder_select="crystalhd"
2198 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2199 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2200 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2201 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2202
2203 # parsers
2204 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2205 hevc_parser_select="hevc_decoder"
2206 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2207 mpegvideo_parser_select="error_resilience mpegvideo"
2208 vc1_parser_select="mpegvideo"
2209
2210 # external libraries
2211 libaacplus_encoder_deps="libaacplus"
2212 libcelt_decoder_deps="libcelt"
2213 libfaac_encoder_deps="libfaac"
2214 libfaac_encoder_select="audio_frame_queue"
2215 libfdk_aac_decoder_deps="libfdk_aac"
2216 libfdk_aac_encoder_deps="libfdk_aac"
2217 libfdk_aac_encoder_select="audio_frame_queue"
2218 libgme_demuxer_deps="libgme"
2219 libgsm_decoder_deps="libgsm"
2220 libgsm_encoder_deps="libgsm"
2221 libgsm_ms_decoder_deps="libgsm"
2222 libgsm_ms_encoder_deps="libgsm"
2223 libilbc_decoder_deps="libilbc"
2224 libilbc_encoder_deps="libilbc"
2225 libmodplug_demuxer_deps="libmodplug"
2226 libmp3lame_encoder_deps="libmp3lame"
2227 libmp3lame_encoder_select="audio_frame_queue"
2228 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2229 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2230 libopencore_amrnb_encoder_select="audio_frame_queue"
2231 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2232 libopenjpeg_decoder_deps="libopenjpeg"
2233 libopenjpeg_encoder_deps="libopenjpeg"
2234 libopus_decoder_deps="libopus"
2235 libopus_encoder_deps="libopus"
2236 libopus_encoder_select="audio_frame_queue"
2237 libquvi_demuxer_deps="libquvi"
2238 libschroedinger_decoder_deps="libschroedinger"
2239 libschroedinger_encoder_deps="libschroedinger"
2240 libshine_encoder_deps="libshine"
2241 libshine_encoder_select="audio_frame_queue"
2242 libspeex_decoder_deps="libspeex"
2243 libspeex_encoder_deps="libspeex"
2244 libspeex_encoder_select="audio_frame_queue"
2245 libstagefright_h264_decoder_deps="libstagefright_h264"
2246 libtheora_encoder_deps="libtheora"
2247 libtwolame_encoder_deps="libtwolame"
2248 libvo_aacenc_encoder_deps="libvo_aacenc"
2249 libvo_aacenc_encoder_select="audio_frame_queue"
2250 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2251 libvorbis_decoder_deps="libvorbis"
2252 libvorbis_encoder_deps="libvorbis"
2253 libvorbis_encoder_select="audio_frame_queue"
2254 libvpx_vp8_decoder_deps="libvpx"
2255 libvpx_vp8_encoder_deps="libvpx"
2256 libvpx_vp9_decoder_deps="libvpx"
2257 libvpx_vp9_encoder_deps="libvpx"
2258 libwavpack_encoder_deps="libwavpack"
2259 libwebp_encoder_deps="libwebp"
2260 libx264_encoder_deps="libx264"
2261 libx264rgb_encoder_deps="libx264"
2262 libx265_encoder_deps="libx265"
2263 libxavs_encoder_deps="libxavs"
2264 libxvid_encoder_deps="libxvid"
2265 libutvideo_decoder_deps="libutvideo"
2266 libutvideo_encoder_deps="libutvideo"
2267 libzvbi_teletext_decoder_deps="libzvbi"
2268
2269 # demuxers / muxers
2270 ac3_demuxer_select="ac3_parser"
2271 asf_demuxer_select="riffdec"
2272 asf_muxer_select="riffenc"
2273 asf_stream_muxer_select="asf_muxer"
2274 avi_demuxer_select="riffdec"
2275 avi_muxer_select="riffenc"
2276 avisynth_demuxer_deps="avisynth"
2277 avisynth_demuxer_select="riffdec"
2278 caf_demuxer_select="riffdec"
2279 dirac_demuxer_select="dirac_parser"
2280 dts_demuxer_select="dca_parser"
2281 dtshd_demuxer_select="dca_parser"
2282 dxa_demuxer_select="riffdec"
2283 eac3_demuxer_select="ac3_parser"
2284 f4v_muxer_select="mov_muxer"
2285 flac_demuxer_select="flac_parser"
2286 hds_muxer_select="flv_muxer"
2287 hls_muxer_select="mpegts_muxer"
2288 ipod_muxer_select="mov_muxer"
2289 ismv_muxer_select="mov_muxer"
2290 libnut_demuxer_deps="libnut"
2291 libnut_muxer_deps="libnut"
2292 matroska_audio_muxer_select="matroska_muxer"
2293 matroska_demuxer_select="riffdec"
2294 matroska_demuxer_suggest="bzlib lzo zlib"
2295 matroska_muxer_select="riffenc"
2296 mmf_muxer_select="riffenc"
2297 mov_demuxer_select="riffdec"
2298 mov_demuxer_suggest="zlib"
2299 mov_muxer_select="riffenc rtpenc_chain"
2300 mp3_demuxer_select="mpegaudio_parser"
2301 mp4_muxer_select="mov_muxer"
2302 mpegts_muxer_select="adts_muxer latm_muxer"
2303 mpegtsraw_demuxer_select="mpegts_demuxer"
2304 mxf_d10_muxer_select="mxf_muxer"
2305 nut_muxer_select="riffenc"
2306 nuv_demuxer_select="riffdec"
2307 ogg_demuxer_select="golomb"
2308 psp_muxer_select="mov_muxer"
2309 rtp_demuxer_select="sdp_demuxer"
2310 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2311 rtsp_demuxer_select="http_protocol rtpdec"
2312 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2313 sap_demuxer_select="sdp_demuxer"
2314 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2315 sdp_demuxer_select="rtpdec"
2316 smoothstreaming_muxer_select="ismv_muxer"
2317 spdif_muxer_select="aac_parser"
2318 tak_demuxer_select="tak_parser"
2319 tg2_muxer_select="mov_muxer"
2320 tgp_muxer_select="mov_muxer"
2321 vobsub_demuxer_select="mpegps_demuxer"
2322 w64_demuxer_select="wav_demuxer"
2323 w64_muxer_select="wav_muxer"
2324 wav_demuxer_select="riffdec"
2325 wav_muxer_select="riffenc"
2326 webm_muxer_select="riffenc"
2327 wtv_demuxer_select="riffdec"
2328 wtv_muxer_select="riffenc"
2329 xmv_demuxer_select="riffdec"
2330 xwma_demuxer_select="riffdec"
2331
2332 # indevs / outdevs
2333 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2334 alsa_outdev_deps="alsa_asoundlib_h"
2335 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2336 caca_outdev_deps="libcaca"
2337 decklink_outdev_deps="decklink pthreads"
2338 decklink_outdev_extralibs="-lstdc++"
2339 dshow_indev_deps="IBaseFilter"
2340 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2341 dv1394_indev_deps="dv1394"
2342 dv1394_indev_select="dv_demuxer"
2343 fbdev_indev_deps="linux_fb_h"
2344 fbdev_outdev_deps="linux_fb_h"
2345 iec61883_indev_deps="libiec61883"
2346 jack_indev_deps="jack_jack_h sem_timedwait"
2347 lavfi_indev_deps="avfilter"
2348 libcdio_indev_deps="libcdio"
2349 libdc1394_indev_deps="libdc1394"
2350 libv4l2_indev_deps="libv4l2"
2351 openal_indev_deps="openal"
2352 opengl_outdev_deps="opengl"
2353 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2354 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2355 pulse_indev_deps="libpulse"
2356 pulse_outdev_deps="libpulse"
2357 sdl_outdev_deps="sdl"
2358 sndio_indev_deps="sndio_h"
2359 sndio_outdev_deps="sndio_h"
2360 v4l_indev_deps="linux_videodev_h"
2361 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2362 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2363 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2364 vfwcap_indev_extralibs="-lavicap32"
2365 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2366 xv_outdev_extralibs="-lXv -lX11 -lXext"
2367 x11grab_indev_deps="x11grab"
2368
2369 # protocols
2370 bluray_protocol_deps="libbluray"
2371 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2372 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2373 ffrtmpcrypt_protocol_select="tcp_protocol"
2374 ffrtmphttp_protocol_deps="!librtmp_protocol"
2375 ffrtmphttp_protocol_select="http_protocol"
2376 ftp_protocol_select="tcp_protocol"
2377 gopher_protocol_select="network"
2378 http_protocol_select="tcp_protocol"
2379 httpproxy_protocol_select="tcp_protocol"
2380 https_protocol_select="tls_protocol"
2381 librtmp_protocol_deps="librtmp"
2382 librtmpe_protocol_deps="librtmp"
2383 librtmps_protocol_deps="librtmp"
2384 librtmpt_protocol_deps="librtmp"
2385 librtmpte_protocol_deps="librtmp"
2386 libssh_protocol_deps="libssh"
2387 mmsh_protocol_select="http_protocol"
2388 mmst_protocol_select="network"
2389 rtmp_protocol_deps="!librtmp_protocol"
2390 rtmp_protocol_select="tcp_protocol"
2391 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2392 rtmps_protocol_deps="!librtmp_protocol"
2393 rtmps_protocol_select="tls_protocol"
2394 rtmpt_protocol_select="ffrtmphttp_protocol"
2395 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2396 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2397 rtp_protocol_select="udp_protocol"
2398 sctp_protocol_deps="struct_sctp_event_subscribe"
2399 sctp_protocol_select="network"
2400 srtp_protocol_select="rtp_protocol"
2401 tcp_protocol_select="network"
2402 tls_protocol_deps_any="openssl gnutls"
2403 tls_protocol_select="tcp_protocol"
2404 udp_protocol_select="network"
2405 unix_protocol_deps="sys_un_h"
2406 unix_protocol_select="network"
2407
2408 # filters
2409 aconvert_filter_deps="swresample"
2410 amovie_filter_deps="avcodec avformat"
2411 aresample_filter_deps="swresample"
2412 ass_filter_deps="libass"
2413 asyncts_filter_deps="avresample"
2414 atempo_filter_deps="avcodec"
2415 atempo_filter_select="rdft"
2416 azmq_filter_deps="libzmq"
2417 blackframe_filter_deps="gpl"
2418 boxblur_filter_deps="gpl"
2419 colormatrix_filter_deps="gpl"
2420 cropdetect_filter_deps="gpl"
2421 dctdnoiz_filter_deps="avcodec"
2422 dctdnoiz_filter_select="dct"
2423 delogo_filter_deps="gpl"
2424 deshake_filter_deps="avcodec"
2425 deshake_filter_select="dsputil"
2426 drawtext_filter_deps="libfreetype"
2427 ebur128_filter_deps="gpl"
2428 flite_filter_deps="libflite"
2429 frei0r_filter_deps="frei0r dlopen"
2430 frei0r_filter_extralibs='$ldl'
2431 frei0r_src_filter_deps="frei0r dlopen"
2432 frei0r_src_filter_extralibs='$ldl'
2433 geq_filter_deps="gpl"
2434 histeq_filter_deps="gpl"
2435 hqdn3d_filter_deps="gpl"
2436 interlace_filter_deps="gpl"
2437 kerndeint_filter_deps="gpl"
2438 ladspa_filter_deps="ladspa dlopen"
2439 mcdeint_filter_deps="avcodec gpl"
2440 movie_filter_deps="avcodec avformat"
2441 mp_filter_deps="gpl avcodec swscale inline_asm"
2442 mpdecimate_filter_deps="gpl avcodec"
2443 mptestsrc_filter_deps="gpl"
2444 negate_filter_deps="lut_filter"
2445 perspective_filter_deps="gpl"
2446 ocv_filter_deps="libopencv"
2447 owdenoise_filter_deps="gpl"
2448 pan_filter_deps="swresample"
2449 phase_filter_deps="gpl"
2450 pp_filter_deps="gpl postproc"
2451 pullup_filter_deps="gpl"
2452 removelogo_filter_deps="avcodec avformat swscale"
2453 resample_filter_deps="avresample"
2454 sab_filter_deps="gpl swscale"
2455 scale_filter_deps="swscale"
2456 smartblur_filter_deps="gpl swscale"
2457 showspectrum_filter_deps="avcodec"
2458 showspectrum_filter_select="rdft"
2459 spp_filter_deps="gpl avcodec"
2460 spp_filter_select="fft"
2461 stereo3d_filter_deps="gpl"
2462 subtitles_filter_deps="avformat avcodec libass"
2463 super2xsai_filter_deps="gpl"
2464 tinterlace_filter_deps="gpl"
2465 vidstabdetect_filter_deps="libvidstab"
2466 vidstabtransform_filter_deps="libvidstab"
2467 pixfmts_super2xsai_test_deps="super2xsai_filter"
2468 tinterlace_merge_test_deps="tinterlace_filter"
2469 tinterlace_pad_test_deps="tinterlace_filter"
2470 zmq_filter_deps="libzmq"
2471
2472 # examples
2473 avio_reading="avformat avcodec avutil"
2474 avcodec_example_deps="avcodec avutil"
2475 demuxing_decoding_example_deps="avcodec avformat avutil"
2476 filter_audio_example_deps="avfilter avutil"
2477 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2478 filtering_video_example_deps="avfilter avcodec avformat avutil"
2479 metadata_example_deps="avformat avutil"
2480 muxing_example_deps="avcodec avformat avutil swscale"
2481 remuxing_example_deps="avcodec avformat avutil"
2482 resampling_audio_example_deps="avutil swresample"
2483 scaling_video_example_deps="avutil swscale"
2484 transcode_aac_example_deps="avcodec avformat swresample"
2485
2486 # libraries
2487 avcodec_deps="avutil"
2488 avdevice_deps="avutil avcodec avformat"
2489 avfilter_deps="avutil"
2490 avformat_deps="avutil avcodec"
2491 avresample_deps="avutil"
2492 postproc_deps="avutil gpl"
2493 swscale_deps="avutil"
2494
2495 # programs
2496 ffmpeg_deps="avcodec avfilter avformat swresample"
2497 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2498                null_filter
2499                setpts_filter trim_filter"
2500 ffplay_deps="avcodec avformat swscale swresample sdl"
2501 ffplay_libs='$sdl_libs'
2502 ffplay_select="rdft crop_filter"
2503 ffprobe_deps="avcodec avformat"
2504 ffserver_deps="avformat fork sarestart"
2505 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2506
2507 # documentation
2508 podpages_deps="perl"
2509 manpages_deps="perl pod2man"
2510 htmlpages_deps="perl texi2html"
2511 txtpages_deps="perl makeinfo"
2512 doc_deps_any="manpages htmlpages podpages txtpages"
2513
2514 # default parameters
2515
2516 logfile="config.log"
2517
2518 # installation paths
2519 prefix_default="/usr/local"
2520 bindir_default='${prefix}/bin'
2521 datadir_default='${prefix}/share/ffmpeg'
2522 docdir_default='${prefix}/share/doc/ffmpeg'
2523 incdir_default='${prefix}/include'
2524 libdir_default='${prefix}/lib'
2525 mandir_default='${prefix}/share/man'
2526 shlibdir_default="$libdir_default"
2527
2528 # toolchain
2529 ar_default="ar"
2530 cc_default="gcc"
2531 cxx_default="g++"
2532 host_cc_default="gcc"
2533 cp_f="cp -f"
2534 install="install"
2535 ln_s="ln -s -f"
2536 nm_default="nm -g"
2537 objformat="elf"
2538 pkg_config_default=pkg-config
2539 ranlib="ranlib"
2540 strip_default="strip"
2541 yasmexe_default="yasm"
2542 windres_default="windres"
2543
2544 nogas=":"
2545
2546 # OS
2547 target_os_default=$(tolower $(uname -s))
2548 host_os=$target_os_default
2549
2550 # machine
2551 if test "$target_os_default" = aix; then
2552     arch_default=$(uname -p)
2553 else
2554     arch_default=$(uname -m)
2555 fi
2556 cpu="generic"
2557
2558 # configurable options
2559 enable $PROGRAM_LIST
2560 enable $DOCUMENT_LIST
2561 enable $EXAMPLE_LIST
2562 enable $(filter_out avresample $LIBRARY_LIST)
2563 enable stripping
2564
2565 enable asm
2566 enable debug
2567 enable doc
2568 enable optimizations
2569 enable runtime_cpudetect
2570 enable safe_bitstream_reader
2571 enable static
2572 enable swscale_alpha
2573
2574 # Enable hwaccels by default.
2575 enable dxva2 vaapi vdpau xvmc
2576 enable xlib
2577
2578 # build settings
2579 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2580 LIBPREF="lib"
2581 LIBSUF=".a"
2582 FULLNAME='$(NAME)$(BUILDSUF)'
2583 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2584 SLIBPREF="lib"
2585 SLIBSUF=".so"
2586 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2587 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2588 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2589 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2590 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2591 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2592
2593 asflags_filter=echo
2594 cflags_filter=echo
2595 ldflags_filter=echo
2596
2597 AS_C='-c'
2598 AS_O='-o $@'
2599 CC_C='-c'
2600 CC_E='-E -o $@'
2601 CC_O='-o $@'
2602 CXX_C='-c'
2603 CXX_O='-o $@'
2604 LD_O='-o $@'
2605 LD_LIB='-l%'
2606 LD_PATH='-L'
2607 HOSTCC_C='-c'
2608 HOSTCC_E='-E -o $@'
2609 HOSTCC_O='-o $@'
2610 HOSTLD_O='-o $@'
2611
2612 host_libs='-lm'
2613 host_cflags_filter=echo
2614 host_ldflags_filter=echo
2615
2616 target_path='$(CURDIR)'
2617
2618 # since the object filename is not given with the -MM flag, the compiler
2619 # is only able to print the basename, and we must add the path ourselves
2620 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2621 DEPFLAGS='-MM'
2622
2623 # find source path
2624 if test -f configure; then
2625     source_path=.
2626 else
2627     source_path=$(cd $(dirname "$0"); pwd)
2628     echo "$source_path" | grep -q '[[:blank:]]' &&
2629         die "Out of tree builds are impossible with whitespace in source path."
2630     test -e "$source_path/config.h" &&
2631         die "Out of tree builds are impossible with config.h in source dir."
2632 fi
2633
2634 for v in "$@"; do
2635     r=${v#*=}
2636     l=${v%"$r"}
2637     r=$(sh_quote "$r")
2638     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2639 done
2640
2641 find_things(){
2642     thing=$1
2643     pattern=$2
2644     file=$source_path/$3
2645     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2646 }
2647
2648 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2649 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2650 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2651 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2652 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2653 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2654 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2655 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2656 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2657 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2658 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2659
2660 ALL_COMPONENTS="
2661     $BSF_LIST
2662     $DECODER_LIST
2663     $DEMUXER_LIST
2664     $ENCODER_LIST
2665     $FILTER_LIST
2666     $HWACCEL_LIST
2667     $INDEV_LIST
2668     $MUXER_LIST
2669     $OUTDEV_LIST
2670     $PARSER_LIST
2671     $PROTOCOL_LIST
2672 "
2673
2674 for n in $COMPONENT_LIST; do
2675     v=$(toupper ${n%s})_LIST
2676     eval enable \$$v
2677     eval ${n}_if_any="\$$v"
2678 done
2679
2680 enable $ARCH_EXT_LIST
2681
2682 die_unknown(){
2683     echo "Unknown option \"$1\"."
2684     echo "See $0 --help for available options."
2685     exit 1
2686 }
2687
2688 print_3_columns() {
2689     cat | tr ' ' '\n' | sort | pr -r -3 -t
2690 }
2691
2692 show_list() {
2693     suffix=_$1
2694     shift
2695     echo $* | sed s/$suffix//g | print_3_columns
2696     exit 0
2697 }
2698
2699 rand_list(){
2700     IFS=', '
2701     set -- $*
2702     unset IFS
2703     for thing; do
2704         comp=${thing%:*}
2705         prob=${thing#$comp}
2706         prob=${prob#:}
2707         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2708         echo "prob ${prob:-0.5}"
2709         printf '%s\n' $comp
2710     done
2711 }
2712
2713 do_random(){
2714     action=$1
2715     shift
2716     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2717     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2718 }
2719
2720 for opt do
2721     optval="${opt#*=}"
2722     case "$opt" in
2723         --extra-ldflags=*)
2724             add_ldflags $optval
2725         ;;
2726         --extra-libs=*)
2727             add_extralibs $optval
2728         ;;
2729         --disable-devices)
2730             disable $INDEV_LIST $OUTDEV_LIST
2731         ;;
2732         --enable-debug=*)
2733             debuglevel="$optval"
2734         ;;
2735         --disable-programs)
2736             disable $PROGRAM_LIST
2737         ;;
2738         --disable-everything)
2739             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2740         ;;
2741         --disable-all)
2742             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2743             disable $LIBRARY_LIST $PROGRAM_LIST doc
2744         ;;
2745         --enable-random|--disable-random)
2746             action=${opt%%-random}
2747             do_random ${action#--} $COMPONENT_LIST
2748         ;;
2749         --enable-random=*|--disable-random=*)
2750             action=${opt%%-random=*}
2751             do_random ${action#--} $optval
2752         ;;
2753         --enable-*=*|--disable-*=*)
2754             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2755             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2756             eval list=\$$(toupper $thing)_LIST
2757             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2758             list=$(filter "$name" $list)
2759             [ "$list" = "" ] && warn "Option $opt did not match anything"
2760             $action $list
2761         ;;
2762         --enable-?*|--disable-?*)
2763             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2764             if is_in $option $COMPONENT_LIST; then
2765                 test $action = disable && action=unset
2766                 eval $action \$$(toupper ${option%s})_LIST
2767             elif is_in $option $CMDLINE_SELECT; then
2768                 $action $option
2769             else
2770                 die_unknown $opt
2771             fi
2772         ;;
2773         --list-*)
2774             NAME="${opt#--list-}"
2775             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2776             NAME=${NAME%s}
2777             eval show_list $NAME \$$(toupper $NAME)_LIST
2778         ;;
2779         --help|-h) show_help
2780         ;;
2781         --fatal-warnings) enable fatal_warnings
2782         ;;
2783         *)
2784             optname="${opt%%=*}"
2785             optname="${optname#--}"
2786             optname=$(echo "$optname" | sed 's/-/_/g')
2787             if is_in $optname $CMDLINE_SET; then
2788                 eval $optname='$optval'
2789             elif is_in $optname $CMDLINE_APPEND; then
2790                 append $optname "$optval"
2791             else
2792                 die_unknown $opt
2793             fi
2794         ;;
2795     esac
2796 done
2797
2798 disabled logging && logfile=/dev/null
2799
2800 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2801 set >> $logfile
2802
2803 test -n "$cross_prefix" && enable cross_compile
2804
2805 if enabled cross_compile; then
2806     test -n "$arch" && test -n "$target_os" ||
2807         die "Must specify target arch and OS when cross-compiling"
2808 fi
2809
2810 ar_default="${cross_prefix}${ar_default}"
2811 cc_default="${cross_prefix}${cc_default}"
2812 cxx_default="${cross_prefix}${cxx_default}"
2813 nm_default="${cross_prefix}${nm_default}"
2814 pkg_config_default="${cross_prefix}${pkg_config_default}"
2815 ranlib="${cross_prefix}${ranlib}"
2816 strip_default="${cross_prefix}${strip_default}"
2817 windres_default="${cross_prefix}${windres_default}"
2818
2819 sysinclude_default="${sysroot}/usr/include"
2820
2821 test -n "$valgrind" && toolchain="valgrind-memcheck"
2822
2823 case "$toolchain" in
2824     clang-asan)
2825         cc_default="clang"
2826         add_cflags  -fsanitize=address
2827         add_ldflags -fsanitize=address
2828     ;;
2829     clang-tsan)
2830         cc_default="clang"
2831         add_cflags  -fsanitize=thread -pie
2832         add_ldflags -fsanitize=thread -pie
2833     ;;
2834     clang-usan)
2835         cc_default="clang"
2836         add_cflags  -fsanitize=undefined
2837         add_ldflags -fsanitize=undefined
2838     ;;
2839     gcc-asan)
2840         cc_default="gcc"
2841         add_cflags  -fsanitize=address
2842         add_ldflags -fsanitize=address
2843     ;;
2844     gcc-tsan)
2845         cc_default="gcc"
2846         add_cflags  -fsanitize=thread -pie -fPIC
2847         add_ldflags -fsanitize=thread -pie -fPIC
2848     ;;
2849     gcc-usan)
2850         cc_default="gcc"
2851         add_cflags  -fsanitize=undefined
2852         add_ldflags -fsanitize=undefined
2853     ;;
2854     valgrind-massif)
2855         target_exec_default=${valgrind:-"valgrind"}
2856         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"
2857     ;;
2858     valgrind-memcheck)
2859         target_exec_default=${valgrind:-"valgrind"}
2860         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2861     ;;
2862     msvc)
2863         # Check whether the current MSVC version needs the C99 converter.
2864         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2865         # support enough of C99 to build ffmpeg. Default to the new
2866         # behaviour if the regexp was unable to match anything, since this
2867         # successfully parses the version number of existing supported
2868         # versions that require the converter (MSVC 2010 and 2012).
2869         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2870         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2871             cc_default="cl"
2872         else
2873             cc_default="c99wrap cl"
2874         fi
2875         ld_default="link"
2876         nm_default="dumpbin -symbols"
2877         ar_default="lib"
2878         target_os_default="win32"
2879         # Use a relative path for TMPDIR. This makes sure all the
2880         # ffconf temp files are written with a relative path, avoiding
2881         # issues with msys/win32 path conversion for MSVC parameters
2882         # such as -Fo<file> or -out:<file>.
2883         TMPDIR=.
2884     ;;
2885     icl)
2886         cc_default="icl"
2887         ld_default="xilink"
2888         nm_default="dumpbin -symbols"
2889         ar_default="xilib"
2890         target_os_default="win32"
2891         TMPDIR=.
2892     ;;
2893     gcov)
2894         add_cflags  -fprofile-arcs -ftest-coverage
2895         add_ldflags -fprofile-arcs -ftest-coverage
2896     ;;
2897     hardened)
2898         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2899         add_ldflags -Wl,-z,relro -Wl,-z,now
2900     ;;
2901     ?*)
2902         die "Unknown toolchain $toolchain"
2903     ;;
2904 esac
2905
2906 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2907 enabled cross_compile || host_cc_default=$cc
2908 set_default host_cc
2909
2910 if ! $pkg_config --version >/dev/null 2>&1; then
2911     warn "$pkg_config not found, library detection may fail."
2912     pkg_config=false
2913 fi
2914
2915 exesuf() {
2916     case $1 in
2917         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2918     esac
2919 }
2920
2921 EXESUF=$(exesuf $target_os)
2922 HOSTEXESUF=$(exesuf $host_os)
2923
2924 # set temporary file name
2925 : ${TMPDIR:=$TEMPDIR}
2926 : ${TMPDIR:=$TMP}
2927 : ${TMPDIR:=/tmp}
2928
2929 if [ -n "$tempprefix" ] ; then
2930     mktemp(){
2931         echo $tempprefix.${HOSTNAME}.${UID}
2932     }
2933 elif ! check_cmd mktemp -u XXXXXX; then
2934     # simple replacement for missing mktemp
2935     # NOT SAFE FOR GENERAL USE
2936     mktemp(){
2937         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2938     }
2939 fi
2940
2941 tmpfile(){
2942     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2943         (set -C; exec > $tmp) 2>/dev/null ||
2944         die "Unable to create temporary file in $TMPDIR."
2945     append TMPFILES $tmp
2946     eval $1=$tmp
2947 }
2948
2949 trap 'rm -f -- $TMPFILES' EXIT
2950
2951 tmpfile TMPASM .asm
2952 tmpfile TMPC   .c
2953 tmpfile TMPCPP .cpp
2954 tmpfile TMPE   $EXESUF
2955 tmpfile TMPH   .h
2956 tmpfile TMPO   .o
2957 tmpfile TMPS   .S
2958 tmpfile TMPSH  .sh
2959 tmpfile TMPV   .ver
2960
2961 unset -f mktemp
2962
2963 chmod +x $TMPE
2964
2965 # make sure we can execute files in $TMPDIR
2966 cat > $TMPSH 2>> $logfile <<EOF
2967 #! /bin/sh
2968 EOF
2969 chmod +x $TMPSH >> $logfile 2>&1
2970 if ! $TMPSH >> $logfile 2>&1; then
2971     cat <<EOF
2972 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2973 variable to another directory and make sure that it is not mounted noexec.
2974 EOF
2975     die "Sanity test failed."
2976 fi
2977
2978 ccc_flags(){
2979     for flag; do
2980         case $flag in
2981             -std=c99)           echo -c99                       ;;
2982             -mcpu=*)            echo -arch ${flag#*=}           ;;
2983             -mieee)             echo -ieee                      ;;
2984             -O*|-fast)          echo $flag                      ;;
2985             -fno-math-errno)    echo -assume nomath_errno       ;;
2986             -g)                 echo -g3                        ;;
2987             -Wall)              echo -msg_enable level2         ;;
2988             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2989             -Wl,*)              echo $flag                      ;;
2990             -f*|-W*)                                            ;;
2991             *)                  echo $flag                      ;;
2992         esac
2993    done
2994 }
2995
2996 cparser_flags(){
2997     for flag; do
2998         case $flag in
2999             -Wno-switch)             echo -Wno-switch-enum ;;
3000             -Wno-format-zero-length) ;;
3001             -Wdisabled-optimization) ;;
3002             -Wno-pointer-sign)       echo -Wno-other ;;
3003             *)                       echo $flag ;;
3004         esac
3005     done
3006 }
3007
3008 msvc_common_flags(){
3009     for flag; do
3010         case $flag in
3011             # In addition to specifying certain flags under the compiler
3012             # specific filters, they must be specified here as well or else the
3013             # generic catch all at the bottom will print the original flag.
3014             -Wall)                ;;
3015             -std=c99)             ;;
3016             # Common flags
3017             -fomit-frame-pointer) ;;
3018             -g)                   echo -Z7 ;;
3019             -fno-math-errno)      ;;
3020             -fno-common)          ;;
3021             -fno-signed-zeros)    ;;
3022             -fPIC)                ;;
3023             -mthumb)              ;;
3024             -march=*)             ;;
3025             -lz)                  echo zlib.lib ;;
3026             -lavifil32)           echo vfw32.lib ;;
3027             -lavicap32)           echo vfw32.lib user32.lib ;;
3028             -l*)                  echo ${flag#-l}.lib ;;
3029             *)                    echo $flag ;;
3030         esac
3031     done
3032 }
3033
3034 msvc_flags(){
3035     msvc_common_flags "$@"
3036     for flag; do
3037         case $flag in
3038             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3039                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3040                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3041                                        -wd4554 \
3042                                        -wd4273 ;;
3043         esac
3044     done
3045 }
3046
3047 icl_flags(){
3048     msvc_common_flags "$@"
3049     for flag; do
3050         case $flag in
3051             # Despite what Intel's documentation says -Wall, which is supported
3052             # on Windows, does enable remarks so disable them here.
3053             -Wall)                echo $flag -Qdiag-disable:remark ;;
3054             -std=c99)             echo -Qstd=c99 ;;
3055         esac
3056     done
3057 }
3058
3059 pgi_flags(){
3060     for flag; do
3061         case $flag in
3062             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3063             -fomit-frame-pointer) echo -Mnoframe ;;
3064             -g)                   echo -gopt ;;
3065             *)                    echo $flag ;;
3066         esac
3067     done
3068 }
3069
3070 suncc_flags(){
3071     for flag; do
3072         case $flag in
3073             -march=*|-mcpu=*)
3074                 case "${flag#*=}" in
3075                     native)                   echo -xtarget=native       ;;
3076                     v9|niagara)               echo -xarch=sparc          ;;
3077                     ultrasparc)               echo -xarch=sparcvis       ;;
3078                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3079                     i586|pentium)             echo -xchip=pentium        ;;
3080                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3081                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3082                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3083                     pentium4*)          echo -xtarget=pentium4           ;;
3084                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3085                     *-sse3)             echo -xarch=sse3                 ;;
3086                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3087                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3088                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3089                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3090                     bdver*)                    echo -xarch=avx           ;;
3091                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3092                     k8|opteron|athlon64|athlon-fx)
3093                                                echo -xarch=sse2a         ;;
3094                     athlon*)                   echo -xarch=pentium_proa  ;;
3095                 esac
3096                 ;;
3097             -std=c99)             echo -xc99              ;;
3098             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3099             -fPIC)                echo -KPIC -xcode=pic32 ;;
3100             -W*,*)                echo $flag              ;;
3101             -f*-*|-W*|-mimpure-text)                      ;;
3102             -shared)              echo -G                 ;;
3103             *)                    echo $flag              ;;
3104         esac
3105     done
3106 }
3107
3108 tms470_flags(){
3109     for flag; do
3110         case $flag in
3111             -march=*|-mcpu=*)
3112                 case "${flag#*=}" in
3113                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3114                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3115                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3116                     armv6*|arm11*)          echo -mv=6   ;;
3117                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3118                                             echo -mv=5e  ;;
3119                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3120                 esac
3121                 ;;
3122             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3123             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3124             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3125             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3126             -msoft-float)   echo --float_support=vfplib       ;;
3127             -O[0-3]|-mf=*)  echo $flag                        ;;
3128             -g)             echo -g -mn                       ;;
3129             -pds=*)         echo $flag                        ;;
3130             -D*|-I*)        echo $flag                        ;;
3131             --gcc|--abi=*)  echo $flag                        ;;
3132             -me)            echo $flag                        ;;
3133         esac
3134     done
3135 }
3136
3137 probe_cc(){
3138     pfx=$1
3139     _cc=$2
3140
3141     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3142     unset _ld_o _ldflags _ld_lib _ld_path
3143     unset _depflags _DEPCMD _DEPFLAGS
3144     _flags_filter=echo
3145
3146     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3147         true # no-op to avoid reading stdin in following checks
3148     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3149         _type=llvm_gcc
3150         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3151         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3152         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3153         _cflags_speed='-O3'
3154         _cflags_size='-Os'
3155     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3156         _type=gcc
3157         gcc_version=$($_cc --version | head -n1)
3158         gcc_basever=$($_cc -dumpversion)
3159         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3160         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3161         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3162         if ! $_cc -dumpversion | grep -q '^2\.'; then
3163             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3164         fi
3165         _cflags_speed='-O3'
3166         _cflags_size='-Os'
3167     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3168         _type=icc
3169         _ident=$($_cc --version | head -n1)
3170         _depflags='-MMD'
3171         _cflags_speed='-O3'
3172         _cflags_size='-Os'
3173         _cflags_noopt='-O1'
3174     elif $_cc -v 2>&1 | grep -q xlc; then
3175         _type=xlc
3176         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3177         _cflags_speed='-O5'
3178         _cflags_size='-O5 -qcompact'
3179     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3180         _type=ccc
3181         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3182         _DEPFLAGS='-M'
3183         _cflags_speed='-fast'
3184         _cflags_size='-O1'
3185         _flags_filter=ccc_flags
3186     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3187         test -d "$sysroot" || die "No valid sysroot specified."
3188         _type=armcc
3189         _ident=$($_cc --vsn | head -n1)
3190         armcc_conf="$PWD/armcc.conf"
3191         $_cc --arm_linux_configure                 \
3192              --arm_linux_config_file="$armcc_conf" \
3193              --configure_sysroot="$sysroot"        \
3194              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3195              die "Error creating armcc configuration file."
3196         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3197         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3198         as_default="${cross_prefix}gcc"
3199         _depflags='-MMD'
3200         _cflags_speed='-O3'
3201         _cflags_size='-Os'
3202     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3203         _type=tms470
3204         _ident=$($_cc -version | head -n1 | tr -s ' ')
3205         _flags='--gcc --abi=eabi -me'
3206         _cc_e='-ppl -fe=$@'
3207         _cc_o='-fe=$@'
3208         _depflags='-ppa -ppd=$(@:.o=.d)'
3209         _cflags_speed='-O3 -mf=5'
3210         _cflags_size='-O3 -mf=2'
3211         _flags_filter=tms470_flags
3212     elif $_cc -v 2>&1 | grep -q clang; then
3213         _type=clang
3214         _ident=$($_cc --version | head -n1)
3215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3216         _cflags_speed='-O3'
3217         _cflags_size='-Os'
3218     elif $_cc -V 2>&1 | grep -q Sun; then
3219         _type=suncc
3220         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3221         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3222         _DEPFLAGS='-xM1 -xc99'
3223         _ldflags='-std=c99'
3224         _cflags_speed='-O5'
3225         _cflags_size='-O5 -xspace'
3226         _flags_filter=suncc_flags
3227     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3228         _type=pathscale
3229         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3230         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3231         _cflags_speed='-O2'
3232         _cflags_size='-Os'
3233         _flags_filter='filter_out -Wdisabled-optimization'
3234     elif $_cc -v 2>&1 | grep -q Open64; then
3235         _type=open64
3236         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3238         _cflags_speed='-O2'
3239         _cflags_size='-Os'
3240         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3241     elif $_cc -V 2>&1 | grep -q Portland; then
3242         _type=pgi
3243         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3244         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3245         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3246         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3247         _cflags_noopt="-O"
3248         _flags_filter=pgi_flags
3249     elif $_cc 2>&1 | grep -q Microsoft; then
3250         _type=msvc
3251         _ident=$($cc 2>&1 | head -n1)
3252         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3253         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3254         _cflags_speed="-O2"
3255         _cflags_size="-O1"
3256         if $_cc 2>&1 | grep -q Linker; then
3257             _ld_o='-out:$@'
3258         else
3259             _ld_o='-Fe$@'
3260         fi
3261         _cc_o='-Fo$@'
3262         _cc_e='-P -Fi$@'
3263         _flags_filter=msvc_flags
3264         _ld_lib='lib%.a'
3265         _ld_path='-libpath:'
3266         _flags='-nologo'
3267         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3268         if [ $pfx = hostcc ]; then
3269             append _cflags -Dsnprintf=_snprintf
3270         fi
3271         disable stripping
3272     elif $_cc 2>&1 | grep -q Intel; then
3273         _type=icl
3274         _ident=$($cc 2>&1 | head -n1)
3275         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3276         # Not only is O3 broken on 13.x+ but it is slower on all previous
3277         # versions (tested) as well.
3278         _cflags_speed="-O2"
3279         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3280         if $_cc 2>&1 | grep -q Linker; then
3281             _ld_o='-out:$@'
3282         else
3283             _ld_o='-Fe$@'
3284         fi
3285         _cc_o='-Fo$@'
3286         _cc_e='-P'
3287         _flags_filter=icl_flags
3288         _ld_lib='lib%.a'
3289         _ld_path='-libpath:'
3290         # -Qdiag-error to make icl error when seeing certain unknown arguments
3291         _flags='-nologo -Qdiag-error:4044,10157'
3292         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3293         # with MSVC which enables it by default.
3294         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3295         if [ $pfx = hostcc ]; then
3296             append _cflags -Dsnprintf=_snprintf
3297         fi
3298     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3299         _type=cparser
3300         _ident=$($_cc --version | head -n1)
3301         _depflags='-MMD'
3302         _cflags_speed='-O4'
3303         _cflags_size='-O2'
3304         _flags_filter=cparser_flags
3305     fi
3306
3307     eval ${pfx}_type=\$_type
3308     eval ${pfx}_ident=\$_ident
3309 }
3310
3311 set_ccvars(){
3312     eval ${1}_C=\${_cc_c-\${${1}_C}}
3313     eval ${1}_E=\${_cc_e-\${${1}_E}}
3314     eval ${1}_O=\${_cc_o-\${${1}_O}}
3315
3316     if [ -n "$_depflags" ]; then
3317         eval ${1}_DEPFLAGS=\$_depflags
3318     else
3319         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3320         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3321         eval DEP${1}FLAGS=\$_flags
3322     fi
3323 }
3324
3325 probe_cc cc "$cc"
3326 cflags_filter=$_flags_filter
3327 cflags_speed=$_cflags_speed
3328 cflags_size=$_cflags_size
3329 cflags_noopt=$_cflags_noopt
3330 add_cflags $_flags $_cflags
3331 cc_ldflags=$_ldflags
3332 set_ccvars CC
3333
3334 probe_cc hostcc "$host_cc"
3335 host_cflags_filter=$_flags_filter
3336 add_host_cflags  $_flags $_cflags
3337 set_ccvars HOSTCC
3338
3339 test -n "$cc_type" && enable $cc_type ||
3340     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3341
3342 : ${as_default:=$cc}
3343 : ${dep_cc_default:=$cc}
3344 : ${ld_default:=$cc}
3345 : ${host_ld_default:=$host_cc}
3346 set_default ar as dep_cc ld host_ld windres
3347
3348 probe_cc as "$as"
3349 asflags_filter=$_flags_filter
3350 add_asflags $_flags $_cflags
3351 set_ccvars AS
3352
3353 probe_cc ld "$ld"
3354 ldflags_filter=$_flags_filter
3355 add_ldflags $_flags $_ldflags
3356 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3357 LD_O=${_ld_o-$LD_O}
3358 LD_LIB=${_ld_lib-$LD_LIB}
3359 LD_PATH=${_ld_path-$LD_PATH}
3360
3361 probe_cc hostld "$host_ld"
3362 host_ldflags_filter=$_flags_filter
3363 add_host_ldflags $_flags $_ldflags
3364 HOSTLD_O=${_ld_o-$HOSTLD_O}
3365
3366 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3367     probe_cc depcc "$dep_cc"
3368     CCDEP=${_DEPCMD:-$DEPCMD}
3369     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3370     DEPCCFLAGS=$_flags
3371 fi
3372
3373 if $ar 2>&1 | grep -q Microsoft; then
3374     arflags="-nologo"
3375     ar_o='-out:$@'
3376 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3377     arflags="rq"
3378     ar_o='$@'
3379 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3380     arflags='-Xany -r -c'
3381     ar_o='$@'
3382 else
3383     arflags="rc"
3384     ar_o='$@'
3385 fi
3386
3387 add_cflags $extra_cflags
3388 add_cxxflags $extra_cxxflags
3389 add_asflags $extra_cflags
3390
3391 if test -n "$sysroot"; then
3392     case "$cc_type" in
3393         gcc|llvm_gcc|clang)
3394             add_cppflags --sysroot="$sysroot"
3395             add_ldflags --sysroot="$sysroot"
3396         ;;
3397         tms470)
3398             add_cppflags -I"$sysinclude"
3399             add_ldflags  --sysroot="$sysroot"
3400         ;;
3401     esac
3402 fi
3403
3404 if test "$cpu" = host; then
3405     enabled cross_compile &&
3406         die "--cpu=host makes no sense when cross-compiling."
3407
3408     case "$cc_type" in
3409         gcc|llvm_gcc)
3410             check_native(){
3411                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3412                 sed -n "/cc1.*$1=/{
3413                             s/.*$1=\\([^ ]*\\).*/\\1/
3414                             p
3415                             q
3416                         }" $TMPE
3417             }
3418             cpu=$(check_native -march || check_native -mcpu)
3419         ;;
3420     esac
3421
3422     test "${cpu:-host}" = host &&
3423         die "--cpu=host not supported with compiler $cc"
3424 fi
3425
3426 # Deal with common $arch aliases
3427 case "$arch" in
3428     aarch64|arm64)
3429         arch="aarch64"
3430     ;;
3431     arm*|iPad*|iPhone*)
3432         arch="arm"
3433     ;;
3434     mips*|IP*)
3435         arch="mips"
3436     ;;
3437     parisc*|hppa*)
3438         arch="parisc"
3439     ;;
3440     "Power Macintosh"|ppc*|powerpc*)
3441         arch="ppc"
3442     ;;
3443     s390|s390x)
3444         arch="s390"
3445     ;;
3446     sh4|sh)
3447         arch="sh4"
3448     ;;
3449     sun4u|sparc*)
3450         arch="sparc"
3451     ;;
3452     tilegx|tile-gx)
3453         arch="tilegx"
3454     ;;
3455     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3456         arch="x86"
3457     ;;
3458 esac
3459
3460 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3461 enable $arch
3462
3463 # Add processor-specific flags
3464 if enabled aarch64; then
3465
3466     case $cpu in
3467         armv*)
3468             cpuflags="-march=$cpu"
3469         ;;
3470         *)
3471             cpuflags="-mcpu=$cpu"
3472         ;;
3473     esac
3474
3475 elif enabled alpha; then
3476
3477     cpuflags="-mcpu=$cpu"
3478
3479 elif enabled arm; then
3480
3481     check_arm_arch() {
3482         check_cpp_condition stddef.h \
3483             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3484             $cpuflags
3485     }
3486
3487     probe_arm_arch() {
3488         if   check_arm_arch 4;        then echo armv4;
3489         elif check_arm_arch 4T;       then echo armv4t;
3490         elif check_arm_arch 5;        then echo armv5;
3491         elif check_arm_arch 5E;       then echo armv5e;
3492         elif check_arm_arch 5T;       then echo armv5t;
3493         elif check_arm_arch 5TE;      then echo armv5te;
3494         elif check_arm_arch 5TEJ;     then echo armv5te;
3495         elif check_arm_arch 6;        then echo armv6;
3496         elif check_arm_arch 6J;       then echo armv6j;
3497         elif check_arm_arch 6K;       then echo armv6k;
3498         elif check_arm_arch 6Z;       then echo armv6z;
3499         elif check_arm_arch 6ZK;      then echo armv6zk;
3500         elif check_arm_arch 6T2;      then echo armv6t2;
3501         elif check_arm_arch 7;        then echo armv7;
3502         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3503         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3504         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3505         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3506         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3507         fi
3508     }
3509
3510     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3511
3512     case $cpu in
3513         armv*)
3514             cpuflags="-march=$cpu"
3515             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3516         ;;
3517         *)
3518             cpuflags="-mcpu=$cpu"
3519             case $cpu in
3520                 cortex-a*)                               subarch=armv7a  ;;
3521                 cortex-r*)                               subarch=armv7r  ;;
3522                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3523                 arm11*)                                  subarch=armv6   ;;
3524                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3525                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3526                 *)                             subarch=$(probe_arm_arch) ;;
3527             esac
3528         ;;
3529     esac
3530
3531     case "$subarch" in
3532         armv5t*)    enable fast_clz                ;;
3533         armv[6-8]*) enable fast_clz fast_unaligned ;;
3534     esac
3535
3536 elif enabled avr32; then
3537
3538     case $cpu in
3539         ap7[02]0[0-2])
3540             subarch="avr32_ap"
3541             cpuflags="-mpart=$cpu"
3542         ;;
3543         ap)
3544             subarch="avr32_ap"
3545             cpuflags="-march=$cpu"
3546         ;;
3547         uc3[ab]*)
3548             subarch="avr32_uc"
3549             cpuflags="-mcpu=$cpu"
3550         ;;
3551         uc)
3552             subarch="avr32_uc"
3553             cpuflags="-march=$cpu"
3554         ;;
3555     esac
3556
3557 elif enabled bfin; then
3558
3559     cpuflags="-mcpu=$cpu"
3560
3561 elif enabled mips; then
3562
3563     cpuflags="-march=$cpu"
3564
3565     case $cpu in
3566         24kc)
3567             disable mipsfpu
3568             disable mipsdspr1
3569             disable mipsdspr2
3570         ;;
3571         24kf*)
3572             disable mipsdspr1
3573             disable mipsdspr2
3574         ;;
3575         24kec|34kc|1004kc)
3576             disable mipsfpu
3577             disable mipsdspr2
3578         ;;
3579         24kef*|34kf*|1004kf*)
3580             disable mipsdspr2
3581         ;;
3582         74kc)
3583             disable mipsfpu
3584         ;;
3585     esac
3586
3587 elif enabled ppc; then
3588
3589     case $(tolower $cpu) in
3590         601|ppc601|powerpc601)
3591             cpuflags="-mcpu=601"
3592             disable altivec
3593         ;;
3594         603*|ppc603*|powerpc603*)
3595             cpuflags="-mcpu=603"
3596             disable altivec
3597         ;;
3598         604*|ppc604*|powerpc604*)
3599             cpuflags="-mcpu=604"
3600             disable altivec
3601         ;;
3602         g3|75*|ppc75*|powerpc75*)
3603             cpuflags="-mcpu=750"
3604             disable altivec
3605         ;;
3606         g4|745*|ppc745*|powerpc745*)
3607             cpuflags="-mcpu=7450"
3608         ;;
3609         74*|ppc74*|powerpc74*)
3610             cpuflags="-mcpu=7400"
3611         ;;
3612         g5|970|ppc970|powerpc970)
3613             cpuflags="-mcpu=970"
3614         ;;
3615         power[3-7]*)
3616             cpuflags="-mcpu=$cpu"
3617         ;;
3618         cell)
3619             cpuflags="-mcpu=cell"
3620             enable ldbrx
3621         ;;
3622         e500mc)
3623             cpuflags="-mcpu=e500mc"
3624             disable altivec
3625         ;;
3626         e500v2)
3627             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3628             disable altivec
3629         ;;
3630         e500)
3631             cpuflags="-mcpu=8540 -mhard-float"
3632             disable altivec
3633         ;;
3634     esac
3635
3636 elif enabled sparc; then
3637
3638     case $cpu in
3639         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3640             cpuflags="-mcpu=$cpu"
3641         ;;
3642         ultrasparc*|niagara[234])
3643             cpuflags="-mcpu=$cpu"
3644         ;;
3645     esac
3646
3647 elif enabled x86; then
3648
3649     case $cpu in
3650         i[345]86|pentium)
3651             cpuflags="-march=$cpu"
3652             disable mmx
3653         ;;
3654         # targets that do NOT support nopl and conditional mov (cmov)
3655         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3656             cpuflags="-march=$cpu"
3657             disable i686
3658         ;;
3659         # targets that do support nopl and conditional mov (cmov)
3660         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3661             cpuflags="-march=$cpu"
3662             enable i686
3663             enable fast_cmov
3664         ;;
3665         # targets that do support conditional mov but on which it's slow
3666         pentium4|pentium4m|prescott|nocona)
3667             cpuflags="-march=$cpu"
3668             enable i686
3669             disable fast_cmov
3670         ;;
3671     esac
3672
3673 fi
3674
3675 if [ "$cpu" != generic ]; then
3676     add_cflags  $cpuflags
3677     add_asflags $cpuflags
3678 fi
3679
3680 # compiler sanity check
3681 check_exec <<EOF
3682 int main(void){ return 0; }
3683 EOF
3684 if test "$?" != 0; then
3685     echo "$cc is unable to create an executable file."
3686     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3687         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3688         echo "Only do this if you know what cross compiling means."
3689     fi
3690     die "C compiler test failed."
3691 fi
3692
3693 add_cppflags -D_ISOC99_SOURCE
3694 add_cxxflags -D__STDC_CONSTANT_MACROS
3695 check_cflags -std=c99
3696 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3697 #include <stdlib.h>
3698 EOF
3699 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3700 #include <stdlib.h>
3701 EOF
3702
3703 add_host_cppflags -D_ISOC99_SOURCE
3704 check_host_cflags -std=c99
3705 check_host_cflags -Wall
3706 check_host_cflags -O3
3707
3708 check_64bit(){
3709     arch32=$1
3710     arch64=$2
3711     expr=$3
3712     check_code cc "" "int test[2*($expr) - 1]" &&
3713         subarch=$arch64 || subarch=$arch32
3714 }
3715
3716 case "$arch" in
3717     aarch64|alpha|ia64)
3718         spic=$shared
3719     ;;
3720     mips)
3721         check_64bit mips mips64 '_MIPS_SIM > 1'
3722         spic=$shared
3723     ;;
3724     parisc)
3725         check_64bit parisc parisc64 'sizeof(void *) > 4'
3726         spic=$shared
3727     ;;
3728     ppc)
3729         check_64bit ppc ppc64 'sizeof(void *) > 4'
3730         spic=$shared
3731     ;;
3732     s390)
3733         check_64bit s390 s390x 'sizeof(void *) > 4'
3734         spic=$shared
3735     ;;
3736     sparc)
3737         check_64bit sparc sparc64 'sizeof(void *) > 4'
3738         spic=$shared
3739     ;;
3740     x86)
3741         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3742         if test "$subarch" = "x86_64"; then
3743             spic=$shared
3744         fi
3745     ;;
3746     ppc)
3747         check_cc <<EOF && subarch="ppc64"
3748         int test[(int)sizeof(char*) - 7];
3749 EOF
3750     ;;
3751 esac
3752
3753 enable $subarch
3754 enabled spic && enable_weak pic
3755
3756 # OS specific
3757 case $target_os in
3758     aix)
3759         SHFLAGS=-shared
3760         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3761         enabled shared && add_ldflags -Wl,-brtl
3762         ;;
3763     haiku)
3764         prefix_default="/boot/common"
3765         network_extralibs="-lnetwork"
3766         host_libs=
3767         ;;
3768     sunos)
3769         SHFLAGS='-shared -Wl,-h,$$(@F)'
3770         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3771         network_extralibs="-lsocket -lnsl"
3772         # When using suncc to build, the Solaris linker will mark
3773         # an executable with each instruction set encountered by
3774         # the Solaris assembler.  As our libraries contain their own
3775         # guards for processor-specific code, instead suppress
3776         # generation of the HWCAPS ELF section on Solaris x86 only.
3777         enabled_all suncc x86 &&
3778             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3779             add_ldflags -Wl,-M,mapfile
3780         nm_default='nm -P -g'
3781         ;;
3782     netbsd)
3783         disable symver
3784         oss_indev_extralibs="-lossaudio"
3785         oss_outdev_extralibs="-lossaudio"
3786         enabled gcc || check_ldflags -Wl,-zmuldefs
3787         ;;
3788     openbsd|bitrig)
3789         disable symver
3790         SHFLAGS='-shared'
3791         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3792         SLIB_INSTALL_LINKS=
3793         oss_indev_extralibs="-lossaudio"
3794         oss_outdev_extralibs="-lossaudio"
3795         ;;
3796     dragonfly)
3797         disable symver
3798         ;;
3799     freebsd)
3800         ;;
3801     bsd/os)
3802         add_extralibs -lpoll -lgnugetopt
3803         strip="strip -d"
3804         ;;
3805     darwin)
3806         gas="gas-preprocessor.pl $cc"
3807         enabled ppc && add_asflags -force_cpusubtype_ALL
3808         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3809         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3810         strip="${strip} -x"
3811         add_ldflags -Wl,-dynamic,-search_paths_first
3812         SLIBSUF=".dylib"
3813         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3814         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3815         objformat="macho"
3816         enabled x86_64 && objformat="macho64"
3817         enabled_any pic shared ||
3818             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3819         ;;
3820     mingw32*)
3821         if test $target_os = "mingw32ce"; then
3822             disable network
3823         else
3824             target_os=mingw32
3825         fi
3826         LIBTARGET=i386
3827         if enabled x86_64; then
3828             LIBTARGET="i386:x86-64"
3829         elif enabled arm; then
3830             LIBTARGET=arm-wince
3831         fi
3832         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3833         check_ldflags -Wl,--nxcompat
3834         check_ldflags -Wl,--dynamicbase
3835         shlibdir_default="$bindir_default"
3836         SLIBPREF=""
3837         SLIBSUF=".dll"
3838         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3839         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3840         dlltool="${cross_prefix}dlltool"
3841         if check_cmd lib.exe -list; then
3842             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3843             if enabled x86_64; then
3844                 LIBTARGET=x64
3845             fi
3846         elif check_cmd $dlltool --version; then
3847             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3848         fi
3849         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3850         SLIB_INSTALL_LINKS=
3851         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3852         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3853         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3854         objformat="win32"
3855         ranlib=:
3856         enable dos_paths
3857         ;;
3858     win32|win64)
3859         disable symver
3860         if enabled shared; then
3861             # Link to the import library instead of the normal static library
3862             # for shared libs.
3863             LD_LIB='%.lib'
3864             # Cannot build both shared and static libs with MSVC or icl.
3865             disable static
3866         fi
3867         shlibdir_default="$bindir_default"
3868         SLIBPREF=""
3869         SLIBSUF=".dll"
3870         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3871         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3872         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3873         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3874         SLIB_INSTALL_LINKS=
3875         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3876         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3877         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3878         objformat="win32"
3879         ranlib=:
3880         enable dos_paths
3881         ;;
3882     cygwin*)
3883         target_os=cygwin
3884         shlibdir_default="$bindir_default"
3885         SLIBPREF="cyg"
3886         SLIBSUF=".dll"
3887         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3888         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3889         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3890         SLIB_INSTALL_LINKS=
3891         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3892         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3893         objformat="win32"
3894         enable dos_paths
3895         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3896         ;;
3897     *-dos|freedos|opendos)
3898         network_extralibs="-lsocket"
3899         objformat="coff"
3900         enable dos_paths
3901         add_cppflags -U__STRICT_ANSI__
3902         ;;
3903     linux)
3904         enable dv1394
3905         ;;
3906     irix*)
3907         target_os=irix
3908         ranlib="echo ignoring ranlib"
3909         ;;
3910     os/2*)
3911         strip="lxlite -CS"
3912         ln_s="cp -f"
3913         objformat="aout"
3914         add_cppflags -D_GNU_SOURCE
3915         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3916         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3917         LIBSUF="_s.a"
3918         SLIBPREF=""
3919         SLIBSUF=".dll"
3920         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3921         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3922         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3923             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3924             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3925             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3926             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3927             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3928         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3929             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3930         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3931         enable dos_paths
3932         enable_weak os2threads
3933         ;;
3934     gnu/kfreebsd)
3935         add_cppflags -D_BSD_SOURCE
3936         ;;
3937     gnu)
3938         ;;
3939     qnx)
3940         add_cppflags -D_QNX_SOURCE
3941         network_extralibs="-lsocket"
3942         ;;
3943     symbian)
3944         SLIBSUF=".dll"
3945         enable dos_paths
3946         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3947         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3948         add_ldflags -Wl,--target1-abs,--no-undefined \
3949                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3950                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3951         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3952                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3953                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3954         ;;
3955     osf1)
3956         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3957         ;;
3958     minix)
3959         ;;
3960     plan9)
3961         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3962                      -D_REENTRANT_SOURCE        \
3963                      -D_RESEARCH_SOURCE         \
3964                      -DFD_SETSIZE=96            \
3965                      -DHAVE_SOCK_OPTS
3966         add_compat strtod.o strtod=avpriv_strtod
3967         network_extralibs='-lbsd'
3968         exeobjs=compat/plan9/main.o
3969         disable ffserver
3970         cp_f='cp'
3971         ;;
3972     none)
3973         ;;
3974     *)
3975         die "Unknown OS '$target_os'."
3976         ;;
3977 esac
3978
3979 # determine libc flavour
3980
3981 probe_libc(){
3982     pfx=$1
3983     pfx_no_=${pfx%_}
3984     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3985     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3986         eval ${pfx}libc_type=uclibc
3987         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3988     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3989         eval ${pfx}libc_type=glibc
3990         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3991     # MinGW headers can be installed on Cygwin, so check for newlib first.
3992     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3993         eval ${pfx}libc_type=newlib
3994         add_${pfx}cppflags -U__STRICT_ANSI__
3995     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3996     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3997         eval ${pfx}libc_type=mingw64
3998         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3999             add_compat msvcrt/snprintf.o
4000             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4001         fi
4002         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4003         eval test \$${pfx_no_}cc_type = "gcc" &&
4004             add_${pfx}cppflags -D__printf__=__gnu_printf__
4005     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4006          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4007         eval ${pfx}libc_type=mingw32
4008         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4009             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4010             die "ERROR: MinGW32 runtime version must be >= 3.15."
4011         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4012         eval test \$${pfx_no_}cc_type = "gcc" &&
4013             add_${pfx}cppflags -D__printf__=__gnu_printf__
4014     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4015         eval ${pfx}libc_type=msvcrt
4016         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4017         # 0x601 by default unless something else is set by the user.
4018         # This can easily lead to us detecting functions only present
4019         # in such new versions and producing binaries requiring windows 7.0.
4020         # Therefore explicitly set the default to XP unless the user has
4021         # set something else on the command line.
4022         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4023             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4024     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4025         eval ${pfx}libc_type=klibc
4026     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4027         eval ${pfx}libc_type=bionic
4028     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4029         eval ${pfx}libc_type=solaris
4030         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4031     fi
4032 }
4033
4034 probe_libc
4035 test -n "$libc_type" && enable libc_$libc_type
4036 probe_libc host_
4037 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4038
4039 case $libc_type in
4040     bionic)
4041         add_compat strtod.o strtod=avpriv_strtod
4042         ;;
4043     msvcrt)
4044         add_compat strtod.o strtod=avpriv_strtod
4045         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4046                                      _snprintf=avpriv_snprintf  \
4047                                      vsnprintf=avpriv_vsnprintf
4048         ;;
4049 esac
4050
4051 # hacks for compiler/libc/os combinations
4052
4053 if enabled_all tms470 libc_glibc; then
4054     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4055     add_cppflags -D__USER_LABEL_PREFIX__=
4056     add_cppflags -D__builtin_memset=memset
4057     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4058     add_cflags   -pds=48    # incompatible redefinition of macro
4059 fi
4060
4061 if enabled_all ccc libc_glibc; then
4062     add_ldflags -Wl,-z,now  # calls to libots crash without this
4063 fi
4064
4065 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4066     add_cppflags '-I\$(SRC_PATH)/compat/float'
4067
4068 esc(){
4069     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4070 }
4071
4072 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4073
4074 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4075
4076 set_default $PATHS_LIST
4077 set_default nm
4078
4079 # we need to build at least one lib type
4080 if ! enabled_any static shared; then
4081     cat <<EOF
4082 At least one library type must be built.
4083 Specify --enable-static to build the static libraries or --enable-shared to
4084 build the shared libraries as well. To only build the shared libraries specify
4085 --disable-static in addition to --enable-shared.
4086 EOF
4087     exit 1;
4088 fi
4089
4090 # backward compatibility layer for incompatible_libav/fork_abi
4091 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4092 enabled incompatible_libav_abi && enable incompatible_fork_abi
4093
4094 die_license_disabled() {
4095     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4096 }
4097
4098 die_license_disabled_gpl() {
4099     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4100 }
4101
4102 die_license_disabled gpl frei0r
4103 die_license_disabled gpl libcdio
4104 die_license_disabled gpl libutvideo
4105 die_license_disabled gpl libvidstab
4106 die_license_disabled gpl libx264
4107 die_license_disabled gpl libx265
4108 die_license_disabled gpl libxavs
4109 die_license_disabled gpl libxvid
4110 die_license_disabled gpl libzvbi
4111 die_license_disabled gpl x11grab
4112
4113 die_license_disabled nonfree libaacplus
4114 die_license_disabled nonfree libfaac
4115 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4116 enabled gpl && die_license_disabled_gpl nonfree openssl
4117
4118 die_license_disabled version3 libopencore_amrnb
4119 die_license_disabled version3 libopencore_amrwb
4120 die_license_disabled version3 libvo_aacenc
4121 die_license_disabled version3 libvo_amrwbenc
4122
4123 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4124
4125 disabled optimizations || check_cflags -fomit-frame-pointer
4126
4127 enable_weak_pic() {
4128     disabled pic && return
4129     enable pic
4130     add_cppflags -DPIC
4131     case "$target_os" in
4132     mingw*|cygwin*)
4133         ;;
4134     *)
4135         add_cflags -fPIC
4136         ;;
4137     esac
4138     add_asflags  -fPIC
4139 }
4140
4141 enabled pic && enable_weak_pic
4142
4143 check_cc <<EOF || die "Symbol mangling check failed."
4144 int ff_extern;
4145 EOF
4146 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4147 extern_prefix=${sym%%ff_extern*}
4148
4149 check_cc <<EOF && enable_weak inline_asm
4150 void foo(void) { __asm__ volatile ("" ::); }
4151 EOF
4152
4153 _restrict=
4154 for restrict_keyword in restrict __restrict__ __restrict; do
4155     check_cc <<EOF && _restrict=$restrict_keyword && break
4156 void foo(char * $restrict_keyword p);
4157 EOF
4158 done
4159
4160 check_cc <<EOF && enable pragma_deprecated
4161 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4162 EOF
4163
4164 check_cc <<EOF && enable attribute_packed
4165 struct { int x; } __attribute__((packed)) x;
4166 EOF
4167
4168 check_cc <<EOF && enable attribute_may_alias
4169 union { int x; } __attribute__((may_alias)) x;
4170 EOF
4171
4172 check_cc <<EOF || die "endian test failed"
4173 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4174 EOF
4175 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4176
4177 check_inline_asm inline_asm_labels '"1:\n"'
4178
4179 if enabled aarch64; then
4180     # internal assembler in clang 3.3 does not support this instruction
4181     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4182     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4183
4184     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4185
4186 elif enabled alpha; then
4187
4188     check_cflags -mieee
4189
4190 elif enabled arm; then
4191
4192     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4193 float func(float a, float b){ return a+b; }
4194 EOF
4195
4196     enabled thumb && check_cflags -mthumb || check_cflags -marm
4197     nogas=die
4198
4199     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4200         enable vfp_args
4201     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4202         case "${cross_prefix:-$cc}" in
4203             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4204             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4205 __asm__ (".eabi_attribute 28, 1");
4206 int main(void) { return 0; }
4207 EOF
4208         esac
4209         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4210     fi
4211
4212     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4213     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4214     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4215     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4216     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4217     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4218
4219     [ $target_os = linux ] ||
4220         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4221             $ARCH_EXT_LIST_ARM
4222
4223     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4224
4225     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4226
4227 elif enabled mips; then
4228
4229     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4230     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4231      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4232     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4233      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4234     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4235      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4236     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4237      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4238
4239 elif enabled parisc; then
4240
4241     if enabled gcc; then
4242         case $($cc -dumpversion) in
4243             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4244         esac
4245     fi
4246
4247 elif enabled ppc; then
4248
4249     enable local_aligned_8 local_aligned_16
4250
4251     [ $cpu != e500 -a $cpu != e500v2 ] &&
4252      check_inline_asm dcbzl    '"dcbzl 0, %0" :: "r"(0)'
4253     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4254     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4255     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4256
4257     # AltiVec flags: The FSF version of GCC differs from the Apple version
4258     if enabled altivec; then
4259         if ! enabled_any pic ppc64; then
4260             nogas=warn
4261         fi
4262         check_cflags -maltivec -mabi=altivec &&
4263         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4264         check_cflags -faltivec
4265
4266         # check if our compiler supports Motorola AltiVec C API
4267         check_cc <<EOF || disable altivec
4268 $inc_altivec_h
4269 int main(void) {
4270     vector signed int v1 = (vector signed int) { 0 };
4271     vector signed int v2 = (vector signed int) { 1 };
4272     v1 = vec_add(v1, v2);
4273     return 0;
4274 }
4275 EOF
4276
4277         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4278     fi
4279
4280 elif enabled x86; then
4281
4282     check_builtin rdtsc    intrin.h   "__rdtsc()"
4283     check_builtin mm_empty mmintrin.h "_mm_empty()"
4284
4285     enable local_aligned_8 local_aligned_16
4286
4287     # check whether EBP is available on x86
4288     # As 'i' is stored on the stack, this program will crash
4289     # if the base pointer is used to access it because the
4290     # base pointer is cleared in the inline assembly code.
4291     check_exec_crash <<EOF && enable ebp_available
4292 volatile int i=0;
4293 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4294 return i;
4295 EOF
4296
4297     # check whether EBX is available on x86
4298     check_inline_asm ebx_available '""::"b"(0)' &&
4299         check_inline_asm ebx_available '"":::"%ebx"'
4300
4301     # check whether xmm clobbers are supported
4302     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4303
4304     # check whether binutils is new enough to compile SSSE3/MMXEXT
4305     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4306     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4307
4308     if ! disabled_any asm mmx yasm; then
4309         if check_cmd $yasmexe --version; then
4310             enabled x86_64 && yasm_extra="-m amd64"
4311             yasm_debug="-g dwarf2"
4312         elif check_cmd nasm -v; then
4313             yasmexe=nasm
4314             yasm_debug="-g -F dwarf"
4315             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4316         fi
4317
4318         YASMFLAGS="-f $objformat $yasm_extra"
4319         enabled pic               && append YASMFLAGS "-DPIC"
4320         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4321         case "$objformat" in
4322             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4323         esac
4324
4325         check_yasm "movbe ecx, [5]" && enable yasm ||
4326             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4327         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4328         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4329         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4330         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4331         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4332         check_yasm "CPU amdnop" || disable cpunop
4333     fi
4334
4335     case "$cpu" in
4336         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4337             disable fast_clz
4338         ;;
4339     esac
4340
4341 fi
4342
4343 if enabled asm; then
4344     as=${gas:=$as}
4345     check_as <<EOF && enable gnu_as || \
4346         $nogas "GNU assembler not found, install gas-preprocessor"
4347 .macro m n
4348 \n: .int 0
4349 .endm
4350 m x
4351 EOF
4352 fi
4353
4354 check_ldflags -Wl,--as-needed
4355
4356 if check_func dlopen; then
4357     ldl=
4358 elif check_func dlopen -ldl; then
4359     ldl=-ldl
4360 fi
4361
4362 if ! disabled network; then
4363     check_func getaddrinfo $network_extralibs
4364     check_func getservbyport $network_extralibs
4365     check_func inet_aton $network_extralibs
4366
4367     check_type netdb.h "struct addrinfo"
4368     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4369     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4370     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4371     check_type poll.h "struct pollfd"
4372     check_type netinet/sctp.h "struct sctp_event_subscribe"
4373     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4374     check_type netinet/in.h "struct sockaddr_in6"
4375     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4376     check_type "sys/types.h sys/socket.h" socklen_t
4377
4378     # Prefer arpa/inet.h over winsock2
4379     if check_header arpa/inet.h ; then
4380         check_func closesocket
4381     elif check_header winsock2.h ; then
4382         check_func_headers winsock2.h closesocket -lws2 &&
4383             network_extralibs="-lws2" ||
4384         { check_func_headers winsock2.h closesocket -lws2_32 &&
4385             network_extralibs="-lws2_32"; } || disable winsock2_h network
4386         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4387
4388         check_type ws2tcpip.h socklen_t
4389         check_type ws2tcpip.h "struct addrinfo"
4390         check_type ws2tcpip.h "struct group_source_req"
4391         check_type ws2tcpip.h "struct ip_mreq_source"
4392         check_type ws2tcpip.h "struct ipv6_mreq"
4393         check_type winsock2.h "struct pollfd"
4394         check_struct winsock2.h "struct sockaddr" sa_len
4395         check_type ws2tcpip.h "struct sockaddr_in6"
4396         check_type ws2tcpip.h "struct sockaddr_storage"
4397     else
4398         disable network
4399     fi
4400 fi
4401
4402 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4403 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4404 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4405 check_builtin sarestart signal.h "SA_RESTART"
4406 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4407
4408 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4409 check_func  ${malloc_prefix}memalign            && enable memalign
4410 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4411
4412 check_func  access
4413 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4414 check_func  fcntl
4415 check_func  fork
4416 check_func  gethrtime
4417 check_func  getopt
4418 check_func  getrusage
4419 check_func  gettimeofday
4420 check_func  isatty
4421 check_func  localtime_r
4422 check_func  mach_absolute_time
4423 check_func  mkstemp
4424 check_func  mmap
4425 check_func  mprotect
4426 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4427 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4428 check_func  sched_getaffinity
4429 check_func  setrlimit
4430 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4431 check_func  strerror_r
4432 check_func  sysconf
4433 check_func  sysctl
4434 check_func  usleep
4435
4436 check_func_headers conio.h kbhit
4437 check_func_headers io.h setmode
4438 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4439 check_func_headers stdlib.h getenv
4440
4441 check_func_headers windows.h GetProcessAffinityMask
4442 check_func_headers windows.h GetProcessTimes
4443 check_func_headers windows.h GetSystemTimeAsFileTime
4444 check_func_headers windows.h MapViewOfFile
4445 check_func_headers windows.h PeekNamedPipe
4446 check_func_headers windows.h SetConsoleTextAttribute
4447 check_func_headers windows.h Sleep
4448 check_func_headers windows.h VirtualAlloc
4449 check_func_headers glob.h glob
4450 enabled xlib &&
4451     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4452
4453 check_header cl/cl.h
4454 check_header direct.h
4455 check_header dlfcn.h
4456 check_header dxva.h
4457 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4458 check_header io.h
4459 check_header libcrystalhd/libcrystalhd_if.h
4460 check_header mach/mach_time.h
4461 check_header malloc.h
4462 check_header poll.h
4463 check_header sys/mman.h
4464 check_header sys/param.h
4465 check_header sys/resource.h
4466 check_header sys/select.h
4467 check_header sys/time.h
4468 check_header sys/un.h
4469 check_header termios.h
4470 check_header unistd.h
4471 check_header vdpau/vdpau.h
4472 check_header vdpau/vdpau_x11.h
4473 check_header VideoDecodeAcceleration/VDADecoder.h
4474 check_header windows.h
4475 check_header X11/extensions/XvMClib.h
4476 check_header asm/types.h
4477
4478 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4479 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4480 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4481
4482 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4483
4484 if ! disabled w32threads && ! enabled pthreads; then
4485     check_func_headers "windows.h process.h" _beginthreadex &&
4486         enable w32threads || disable w32threads
4487 fi
4488
4489 # check for some common methods of building with pthread support
4490 # do this before the optional library checks as some of them require pthreads
4491 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4492     enable pthreads
4493     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4494         add_cflags -pthread
4495         add_extralibs -pthread
4496     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4497         add_cflags -pthreads
4498         add_extralibs -pthreads
4499     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4500         add_extralibs -lpthreadGC2
4501     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4502         :
4503     elif ! check_func pthread_join && ! check_func pthread_create; then
4504         disable pthreads
4505     fi
4506     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4507 fi
4508
4509
4510 if enabled pthreads; then
4511   check_func pthread_cancel
4512 fi
4513
4514 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4515 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4516
4517 check_lib math.h sin -lm && LIBM="-lm"
4518 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4519
4520 atan2f_args=2
4521 ldexpf_args=2
4522 powf_args=2
4523
4524 for func in $MATH_FUNCS; do
4525     eval check_mathfunc $func \${${func}_args:-1}
4526 done
4527
4528 # these are off by default, so fail if requested and not available
4529 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4530                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4531                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4532 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4533 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4534 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4535 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4536 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4537 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4538 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4539 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4540 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4541 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4542                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4543                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4544 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4545 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4546 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4547 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4548 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4549 enabled libfreetype       && require_libfreetype
4550 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4551 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4552                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4553                                done || die "ERROR: libgsm not found"; }
4554 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4555 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4556 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4557 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4558 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4559 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4560 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4561 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4562                                check_lib openjpeg.h opj_version -lopenjpeg ||
4563                                die "ERROR: libopenjpeg not found"; }
4564 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4565 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4566 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4567 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4568 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4569 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4570 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4571 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4572 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4573 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4574     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4575     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4576 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4577 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4578                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4579                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4580 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4581 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4582 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4583 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4584 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4585 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4586 enabled libvpx            && {
4587     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4588                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4589     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4590                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4591     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4592     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4593 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4594 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4595 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4596                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4597                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4598 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4599                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4600                                die "ERROR: libx265 version must be >= 9."; }
4601 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4602 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4603 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4604 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4605 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4606                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4607                                die "ERROR: openal not found"; } &&
4608                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4609                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4610 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4611                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4612                                die "ERROR: opencl not found"; } &&
4613                              { ! enabled_any w32threads os2threads ||
4614                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4615                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4616                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4617                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4618 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4619                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4620                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4621                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4622                                die "ERROR: opengl not found."
4623                              }
4624 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4625                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4626                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4627                                die "ERROR: openssl not found"; }
4628
4629 if enabled gnutls; then
4630     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4631     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4632 fi
4633
4634 # libdc1394 check
4635 if enabled libdc1394; then
4636     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4637         enable libdc1394_2; } ||
4638     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4639         enable libdc1394_1; } ||
4640     die "ERROR: No version of libdc1394 found "
4641 fi
4642
4643 SDL_CONFIG="${cross_prefix}sdl-config"
4644 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4645     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4646     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4647     enable sdl
4648 else
4649   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4650     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4651     sdl_libs=$("${SDL_CONFIG}" --libs)
4652     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4653     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4654     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4655     enable sdl
4656   fi
4657 fi
4658 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4659
4660 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4661 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4662 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4663 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4664 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4665
4666 check_header linux/fb.h
4667 check_header linux/videodev.h
4668 check_header linux/videodev2.h
4669 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4670
4671 check_header sys/videoio.h
4672
4673 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4674 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4675 # w32api 3.12 had it defined wrong
4676 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4677
4678 check_type "dshow.h" IBaseFilter
4679
4680 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4681 { check_header dev/bktr/ioctl_meteor.h &&
4682   check_header dev/bktr/ioctl_bt848.h; } ||
4683 { check_header machine/ioctl_meteor.h &&
4684   check_header machine/ioctl_bt848.h; } ||
4685 { check_header dev/video/meteor/ioctl_meteor.h &&
4686   check_header dev/video/bktr/ioctl_bt848.h; } ||
4687 check_header dev/ic/bt8xx.h
4688
4689 check_header sndio.h
4690 if check_struct sys/soundcard.h audio_buf_info bytes; then
4691     enable_safe sys/soundcard.h
4692 else
4693     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4694     #include <sys/soundcard.h>
4695     audio_buf_info abc;
4696 EOF
4697 fi
4698 check_header soundcard.h
4699
4700 enabled_any alsa_indev alsa_outdev &&
4701     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4702
4703 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4704     check_func jack_port_get_latency_range -ljack
4705
4706 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4707
4708 if enabled libcdio; then
4709     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4710     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4711     die "ERROR: libcdio-paranoia not found"
4712 fi
4713
4714 enabled xlib &&
4715     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4716
4717 enabled x11grab                                           &&
4718 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4719 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4720 { enabled xlib || die "ERROR: Xlib not found"; }
4721
4722 enabled vaapi &&
4723     check_lib va/va.h vaInitialize -lva ||
4724     disable vaapi
4725
4726 enabled vdpau &&
4727     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4728     disable vdpau
4729
4730 enabled vdpau && enabled xlib &&
4731     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4732     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4733     enable vdpau_x11
4734
4735 # Funny iconv installations are not unusual, so check it after all flags have been set
4736 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4737
4738 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4739
4740 # add some useful compiler flags if supported
4741 check_cflags -Wdeclaration-after-statement
4742 check_cflags -Wall
4743 check_cflags -Wdisabled-optimization
4744 check_cflags -Wpointer-arith
4745 check_cflags -Wredundant-decls
4746 check_cflags -Wwrite-strings
4747 check_cflags -Wtype-limits
4748 check_cflags -Wundef
4749 check_cflags -Wmissing-prototypes
4750 check_cflags -Wno-pointer-to-int-cast
4751 check_cflags -Wstrict-prototypes
4752 enabled extra_warnings && check_cflags -Winline
4753
4754 check_disable_warning(){
4755     warning_flag=-W${1#-Wno-}
4756     test_cflags $warning_flag && add_cflags $1
4757 }
4758
4759 check_disable_warning -Wno-parentheses
4760 check_disable_warning -Wno-switch
4761 check_disable_warning -Wno-format-zero-length
4762 check_disable_warning -Wno-pointer-sign
4763
4764 # add some linker flags
4765 check_ldflags -Wl,--warn-common
4766 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4767 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4768 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4769
4770 # add some strip flags
4771 # -wN '..@*' is more selective than -x, but not available everywhere.
4772 check_stripflags -wN \'..@*\' || check_stripflags -x
4773
4774 enabled neon_clobber_test &&
4775     check_ldflags -Wl,--wrap,avcodec_open2              \
4776                   -Wl,--wrap,avcodec_decode_audio4      \
4777                   -Wl,--wrap,avcodec_decode_video2      \
4778                   -Wl,--wrap,avcodec_decode_subtitle2   \
4779                   -Wl,--wrap,avcodec_encode_audio2      \
4780                   -Wl,--wrap,avcodec_encode_video2      \
4781                   -Wl,--wrap,avcodec_encode_subtitle    \
4782                   -Wl,--wrap,swr_convert                \
4783                   -Wl,--wrap,avresample_convert ||
4784     disable neon_clobber_test
4785
4786 enabled xmm_clobber_test &&
4787     check_ldflags -Wl,--wrap,avcodec_open2              \
4788                   -Wl,--wrap,avcodec_decode_audio4      \
4789                   -Wl,--wrap,avcodec_decode_video2      \
4790                   -Wl,--wrap,avcodec_decode_subtitle2   \
4791                   -Wl,--wrap,avcodec_encode_audio2      \
4792                   -Wl,--wrap,avcodec_encode_video       \
4793                   -Wl,--wrap,avcodec_encode_video2      \
4794                   -Wl,--wrap,avcodec_encode_subtitle    \
4795                   -Wl,--wrap,swr_convert                \
4796                   -Wl,--wrap,avresample_convert         \
4797                   -Wl,--wrap,sws_scale ||
4798     disable xmm_clobber_test
4799
4800 echo "X{};" > $TMPV
4801 if test_ldflags -Wl,--version-script,$TMPV; then
4802     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4803     check_cc <<EOF && enable symver_asm_label
4804 void ff_foo(void) __asm__ ("av_foo@VERSION");
4805 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4806 EOF
4807     check_cc <<EOF && enable symver_gnu_asm
4808 __asm__(".symver ff_foo,av_foo@VERSION");