9c210e9e5550d0bcbfcfb49b3e3f400928d57d8d
[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-libxavs         enable AVS encoding via xavs [no]
248   --enable-libxvid         enable Xvid encoding via xvidcore,
249                            native MPEG-4/Xvid encoder exists [no]
250   --enable-libzmq          enable message passing via libzmq [no]
251   --enable-libzvbi         enable teletext support via libzvbi [no]
252   --enable-openal          enable OpenAL 1.1 capture support [no]
253   --enable-opencl          enable OpenCL code
254   --enable-openssl         enable openssl [no]
255   --enable-x11grab         enable X11 grabbing [no]
256   --disable-zlib           disable zlib [autodetect]
257
258 Advanced options (experts only):
259   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
260   --enable-cross-compile   assume a cross-compiler is used
261   --sysroot=PATH           root of cross-build tree
262   --sysinclude=PATH        location of cross-build system headers
263   --target-os=OS           compiler targets OS [$target_os]
264   --target-exec=CMD        command to run executables on target
265   --target-path=DIR        path to view of build directory on target
266   --target-samples=DIR     path to samples directory on target
267   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
268   --toolchain=NAME         set tool defaults according to NAME
269   --nm=NM                  use nm tool NM [$nm_default]
270   --ar=AR                  use archive tool AR [$ar_default]
271   --as=AS                  use assembler AS [$as_default]
272   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
273   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
274   --cc=CC                  use C compiler CC [$cc_default]
275   --cxx=CXX                use C compiler CXX [$cxx_default]
276   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
277   --ld=LD                  use linker LD [$ld_default]
278   --host-cc=HOSTCC         use host C compiler HOSTCC
279   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
280   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
281   --host-ld=HOSTLD         use host linker HOSTLD
282   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
283   --host-libs=HLIBS        use libs HLIBS when linking for host
284   --host-os=OS             compiler host OS [$target_os]
285   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
286   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
287   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --build-suffix=SUFFIX    library name suffix []
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --progs-suffix=SUFFIX    program name suffix []
294   --arch=ARCH              select architecture [$arch]
295   --cpu=CPU                select the minimum required CPU (affects
296                            instruction selection, may crash on older CPUs)
297   --enable-pic             build position-independent code
298   --enable-sram            allow use of on-chip SRAM
299   --enable-thumb           compile for Thumb instruction set
300   --disable-symver         disable symbol versioning
301   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
302   --disable-safe-bitstream-reader
303                            disable buffer boundary checking in bitreaders
304                            (faster, but may crash)
305   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
306   --enable-lto             use link-time optimization
307
308 Optimization options (experts only):
309   --disable-asm            disable all assembler optimizations
310   --disable-altivec        disable AltiVec optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-vis            disable VIS optimizations
330   --disable-inline-asm     disable use of inline assembler
331   --disable-yasm           disable use of yasm assembler
332   --disable-mips32r2       disable MIPS32R2 optimizations
333   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
334   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
335   --disable-mipsfpu        disable floating point MIPS optimizations
336   --disable-fast-unaligned consider unaligned accesses slow
337
338 Developer options (useful when working on FFmpeg itself):
339   --disable-debug          disable debugging symbols
340   --enable-debug=LEVEL     set the debug level [$debuglevel]
341   --disable-optimizations  disable compiler optimizations
342   --enable-extra-warnings  enable more compiler warnings
343   --disable-stripping      disable stripping of executables and shared libraries
344   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
345                            2 causes a slowdown at runtime.
346   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
347   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
348                            leaks and errors, using the specified valgrind binary.
349                            Cannot be combined with --target-exec
350   --enable-ftrapv          Trap arithmetic overflows
351   --samples=PATH           location of test samples for FATE, if not set use
352                            \$FATE_SAMPLES at make invocation time.
353   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
354                            should be used only for debugging purposes)
355   --enable-random          randomly enable/disable components
356   --disable-random
357   --enable-random=LIST     randomly enable/disable specific components or
358   --disable-random=LIST    component groups. LIST is a comma-separated list
359                            of NAME[:PROB] entries where NAME is a component
360                            (group) and PROB the probability associated with
361                            NAME (default 0.5).
362   --random-seed=VALUE      seed value for --enable/disable-random
363
364 NOTE: Object files are built at the place where configure is launched.
365 EOF
366   exit 0
367 }
368
369 quotes='""'
370
371 log(){
372     echo "$@" >> $logfile
373 }
374
375 log_file(){
376     log BEGIN $1
377     pr -n -t $1 >> $logfile
378     log END $1
379 }
380
381 echolog(){
382     log "$@"
383     echo "$@"
384 }
385
386 warn(){
387     log "WARNING: $*"
388     WARNINGS="${WARNINGS}WARNING: $*\n"
389 }
390
391 die(){
392     echolog "$@"
393     cat <<EOF
394
395 If you think configure made a mistake, make sure you are using the latest
396 version from Git.  If the latest version fails, report the problem to the
397 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
398 EOF
399     if disabled logging; then
400         cat <<EOF
401 Rerun configure with logging enabled (do not use --disable-logging), and
402 include the log this produces with your report.
403 EOF
404     else
405         cat <<EOF
406 Include the log file "$logfile" produced by configure as this will help
407 solving the problem.
408 EOF
409     fi
410     exit 1
411 }
412
413 # Avoid locale weirdness, besides we really just want to translate ASCII.
414 toupper(){
415     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
416 }
417
418 tolower(){
419     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
420 }
421
422 c_escape(){
423     echo "$*" | sed 's/["\\]/\\\0/g'
424 }
425
426 sh_quote(){
427     v=$(echo "$1" | sed "s/'/'\\\\''/g")
428     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
429     echo "$v"
430 }
431
432 cleanws(){
433     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
434 }
435
436 filter(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) echo $v ;; esac"
441     done
442 }
443
444 filter_out(){
445     pat=$1
446     shift
447     for v; do
448         eval "case $v in $pat) ;; *) echo $v ;; esac"
449     done
450 }
451
452 map(){
453     m=$1
454     shift
455     for v; do eval $m; done
456 }
457
458 add_suffix(){
459     suffix=$1
460     shift
461     for v; do echo ${v}${suffix}; done
462 }
463
464 set_all(){
465     value=$1
466     shift
467     for var in $*; do
468         eval $var=$value
469     done
470 }
471
472 set_weak(){
473     value=$1
474     shift
475     for var; do
476         eval : \${$var:=$value}
477     done
478 }
479
480 sanitize_var_name(){
481     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
482 }
483
484 set_safe(){
485     var=$1
486     shift
487     eval $(sanitize_var_name "$var")='$*'
488 }
489
490 get_safe(){
491     eval echo \$$(sanitize_var_name "$1")
492 }
493
494 pushvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:=0}
497         eval ${pvar}_${level}="\$$pvar"
498         eval ${pvar}_level=$(($level+1))
499     done
500 }
501
502 popvar(){
503     for pvar in $*; do
504         eval level=\${${pvar}_level:-0}
505         test $level = 0 && continue
506         eval level=$(($level-1))
507         eval $pvar="\${${pvar}_${level}}"
508         eval ${pvar}_level=$level
509         eval unset ${pvar}_${level}
510     done
511 }
512
513 enable(){
514     set_all yes $*
515 }
516
517 disable(){
518     set_all no $*
519 }
520
521 enable_weak(){
522     set_weak yes $*
523 }
524
525 disable_weak(){
526     set_weak no $*
527 }
528
529 enable_safe(){
530     for var; do
531         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
532     done
533 }
534
535 disable_safe(){
536     for var; do
537         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
538     done
539 }
540
541 do_enable_deep(){
542     for var; do
543         enabled $var && continue
544         eval sel="\$${var}_select"
545         eval sgs="\$${var}_suggest"
546         pushvar var sgs
547         enable_deep $sel
548         popvar sgs
549         enable_deep_weak $sgs
550         popvar var
551     done
552 }
553
554 enable_deep(){
555     do_enable_deep $*
556     enable $*
557 }
558
559 enable_deep_weak(){
560     for var; do
561         disabled $var && continue
562         pushvar var
563         do_enable_deep $var
564         popvar var
565         enable_weak $var
566     done
567 }
568
569 enabled(){
570     test "${1#!}" = "$1" && op== || op=!=
571     eval test "x\$${1#!}" $op "xyes"
572 }
573
574 disabled(){
575     test "${1#!}" = "$1" && op== || op=!=
576     eval test "x\$${1#!}" $op "xno"
577 }
578
579 enabled_all(){
580     for opt; do
581         enabled $opt || return 1
582     done
583 }
584
585 disabled_all(){
586     for opt; do
587         disabled $opt || return 1
588     done
589 }
590
591 enabled_any(){
592     for opt; do
593         enabled $opt && return 0
594     done
595 }
596
597 disabled_any(){
598     for opt; do
599         disabled $opt && return 0
600     done
601     return 1
602 }
603
604 set_default(){
605     for opt; do
606         eval : \${$opt:=\$${opt}_default}
607     done
608 }
609
610 is_in(){
611     value=$1
612     shift
613     for var in $*; do
614         [ $var = $value ] && return 0
615     done
616     return 1
617 }
618
619 do_check_deps(){
620     for cfg; do
621         cfg="${cfg#!}"
622         enabled ${cfg}_checking && die "Circular dependency for $cfg."
623         disabled ${cfg}_checking && continue
624         enable ${cfg}_checking
625         append allopts $cfg
626
627         eval dep_all="\$${cfg}_deps"
628         eval dep_any="\$${cfg}_deps_any"
629         eval dep_sel="\$${cfg}_select"
630         eval dep_sgs="\$${cfg}_suggest"
631         eval dep_ifa="\$${cfg}_if"
632         eval dep_ifn="\$${cfg}_if_any"
633
634         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
635         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
636         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
637
638         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
639         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
640         enabled_all  $dep_all || disable $cfg
641         enabled_any  $dep_any || disable $cfg
642         disabled_any $dep_sel && disable $cfg
643
644         if enabled $cfg; then
645             enable_deep $dep_sel
646             enable_deep_weak $dep_sgs
647         fi
648
649         disable ${cfg}_checking
650     done
651 }
652
653 check_deps(){
654     unset allopts
655
656     do_check_deps "$@"
657
658     for cfg in $allopts; do
659         enabled $cfg || continue
660         eval dep_extralibs="\$${cfg}_extralibs"
661         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
662     done
663 }
664
665 print_config(){
666     pfx=$1
667     files=$2
668     shift 2
669     map 'eval echo "$v \${$v:-no}"' "$@" |
670     awk "BEGIN { split(\"$files\", files) }
671         {
672             c = \"$pfx\" toupper(\$1);
673             v = \$2;
674             sub(/yes/, 1, v);
675             sub(/no/,  0, v);
676             for (f in files) {
677                 file = files[f];
678                 if (file ~ /\\.h\$/) {
679                     printf(\"#define %s %d\\n\", c, v) >>file;
680                 } else if (file ~ /\\.asm\$/) {
681                     printf(\"%%define %s %d\\n\", c, v) >>file;
682                 } else if (file ~ /\\.mak\$/) {
683                     n = -v ? \"\" : \"!\";
684                     printf(\"%s%s=yes\\n\", n, c) >>file;
685                 } else if (file ~ /\\.texi\$/) {
686                     pre = -v ? \"\" : \"@c \";
687                     yesno = \$2;
688                     c2 = tolower(c);
689                     gsub(/_/, \"-\", c2);
690                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
691                 }
692             }
693         }"
694 }
695
696 print_enabled(){
697     suf=$1
698     shift
699     for v; do
700         enabled $v && printf "%s\n" ${v%$suf};
701     done
702 }
703
704 append(){
705     var=$1
706     shift
707     eval "$var=\"\$$var $*\""
708 }
709
710 prepend(){
711     var=$1
712     shift
713     eval "$var=\"$* \$$var\""
714 }
715
716 add_cppflags(){
717     append CPPFLAGS "$@"
718 }
719
720 add_cflags(){
721     append CFLAGS $($cflags_filter "$@")
722 }
723
724 add_cxxflags(){
725     append CXXFLAGS $($cflags_filter "$@")
726 }
727
728 add_asflags(){
729     append ASFLAGS $($asflags_filter "$@")
730 }
731
732 add_ldflags(){
733     append LDFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append ASMSTRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 check_cmd(){
763     log "$@"
764     "$@" >> $logfile 2>&1
765 }
766
767 cc_o(){
768     eval printf '%s\\n' $CC_O
769 }
770
771 cc_e(){
772     eval printf '%s\\n' $CC_E
773 }
774
775 check_cc(){
776     log check_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 check_cxx(){
783     log check_cxx "$@"
784     cat > $TMPCPP
785     log_file $TMPCPP
786     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
787 }
788
789 check_cpp(){
790     log check_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 check_as(){
801     log check_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_inline_asm(){
808     log check_inline_asm "$@"
809     name="$1"
810     code="$2"
811     shift 2
812     disable $name
813     check_cc "$@" <<EOF && enable $name
814 void foo(void){ __asm__ volatile($code); }
815 EOF
816 }
817
818 check_insn(){
819     log check_insn "$@"
820     check_inline_asm ${1}_inline "\"$2\""
821     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
822 }
823
824 check_yasm(){
825     log check_yasm "$@"
826     echo "$1" > $TMPS
827     log_file $TMPS
828     shift 1
829     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
830 }
831
832 ld_o(){
833     eval printf '%s\\n' $LD_O
834 }
835
836 check_ld(){
837     log check_ld "$@"
838     type=$1
839     shift 1
840     flags=$(filter_out '-l*|*.so' $@)
841     libs=$(filter '-l*|*.so' $@)
842     check_$type $($cflags_filter $flags) || return
843     flags=$($ldflags_filter $flags)
844     libs=$($ldflags_filter $libs)
845     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
846 }
847
848 check_code(){
849     log check_code "$@"
850     check=$1
851     headers=$2
852     code=$3
853     shift 3
854     {
855         for hdr in $headers; do
856             echo "#include <$hdr>"
857         done
858         echo "int main(void) { $code; return 0; }"
859     } | check_$check "$@"
860 }
861
862 check_cppflags(){
863     log check_cppflags "$@"
864     check_cc "$@" <<EOF && append CPPFLAGS "$@"
865 int x;
866 EOF
867 }
868
869 test_cflags(){
870     log test_cflags "$@"
871     set -- $($cflags_filter "$@")
872     check_cc "$@" <<EOF
873 int x;
874 EOF
875 }
876
877 check_cflags(){
878     log check_cflags "$@"
879     test_cflags "$@" && add_cflags "$@"
880 }
881
882 check_cxxflags(){
883     log check_cxxflags "$@"
884     set -- $($cflags_filter "$@")
885     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
886 int x;
887 EOF
888 }
889
890 test_ldflags(){
891     log test_ldflags "$@"
892     check_ld "cc" "$@" <<EOF
893 int main(void){ return 0; }
894 EOF
895 }
896
897 check_ldflags(){
898     log check_ldflags "$@"
899     test_ldflags "$@" && add_ldflags "$@"
900 }
901
902 test_stripflags(){
903     log test_stripflags "$@"
904     # call check_cc to get a fresh TMPO
905     check_cc <<EOF
906 int main(void) { return 0; }
907 EOF
908     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
909 }
910
911 check_stripflags(){
912     log check_stripflags "$@"
913     test_stripflags "$@" && add_stripflags "$@"
914 }
915
916 check_header(){
917     log check_header "$@"
918     header=$1
919     shift
920     disable_safe $header
921     check_cpp "$@" <<EOF && enable_safe $header
922 #include <$header>
923 int x;
924 EOF
925 }
926
927 check_func(){
928     log check_func "$@"
929     func=$1
930     shift
931     disable $func
932     check_ld "cc" "$@" <<EOF && enable $func
933 extern int $func();
934 int main(void){ $func(); }
935 EOF
936 }
937
938 check_mathfunc(){
939     log check_mathfunc "$@"
940     func=$1
941     narg=$2
942     shift 2
943     test $narg = 2 && args="f, g" || args="f"
944     disable $func
945     check_ld "cc" "$@" <<EOF && enable $func
946 #include <math.h>
947 float foo(float f, float g) { return $func($args); }
948 int main(void){ return (int) foo; }
949 EOF
950 }
951
952 check_func_headers(){
953     log check_func_headers "$@"
954     headers=$1
955     funcs=$2
956     shift 2
957     {
958         for hdr in $headers; do
959             echo "#include <$hdr>"
960         done
961         for func in $funcs; do
962             echo "long check_$func(void) { return (long) $func; }"
963         done
964         echo "int main(void) { return 0; }"
965     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
966 }
967
968 check_class_headers_cpp(){
969     log check_class_headers_cpp "$@"
970     headers=$1
971     classes=$2
972     shift 2
973     {
974         for hdr in $headers; do
975             echo "#include <$hdr>"
976         done
977         echo "int main(void) { "
978         i=1
979         for class in $classes; do
980             echo "$class obj$i;"
981             i=$(expr $i + 1)
982         done
983         echo "return 0; }"
984     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
985 }
986
987 check_cpp_condition(){
988     log check_cpp_condition "$@"
989     header=$1
990     condition=$2
991     shift 2
992     check_cpp "$@" <<EOF
993 #include <$header>
994 #if !($condition)
995 #error "unsatisfied condition: $condition"
996 #endif
997 EOF
998 }
999
1000 check_lib(){
1001     log check_lib "$@"
1002     header="$1"
1003     func="$2"
1004     shift 2
1005     check_header $header && check_func $func "$@" && add_extralibs "$@"
1006 }
1007
1008 check_lib2(){
1009     log check_lib2 "$@"
1010     headers="$1"
1011     funcs="$2"
1012     shift 2
1013     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1014 }
1015
1016 check_lib_cpp(){
1017     log check_lib_cpp "$@"
1018     headers="$1"
1019     classes="$2"
1020     shift 2
1021     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1022 }
1023
1024 check_pkg_config(){
1025     log check_pkg_config "$@"
1026     pkg="$1"
1027     headers="$2"
1028     funcs="$3"
1029     shift 3
1030     check_cmd $pkg_config --exists --print-errors $pkg || return
1031     pkg_cflags=$($pkg_config --cflags $pkg)
1032     pkg_libs=$($pkg_config --libs $pkg)
1033     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1034         set_safe ${pkg}_cflags $pkg_cflags   &&
1035         set_safe ${pkg}_libs   $pkg_libs
1036 }
1037
1038 check_exec(){
1039     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1040 }
1041
1042 check_exec_crash(){
1043     code=$(cat)
1044
1045     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1046     # are safe but may not be available everywhere.  Thus we use
1047     # raise(SIGTERM) instead.  The check is run in a subshell so we
1048     # can redirect the "Terminated" message from the shell.  SIGBUS
1049     # is not defined by standard C so it is used conditionally.
1050
1051     (check_exec "$@") >> $logfile 2>&1 <<EOF
1052 #include <signal.h>
1053 static void sighandler(int sig){
1054     raise(SIGTERM);
1055 }
1056 int foo(void){
1057     $code
1058 }
1059 int (*func_ptr)(void) = foo;
1060 int main(void){
1061     signal(SIGILL, sighandler);
1062     signal(SIGFPE, sighandler);
1063     signal(SIGSEGV, sighandler);
1064 #ifdef SIGBUS
1065     signal(SIGBUS, sighandler);
1066 #endif
1067     return func_ptr();
1068 }
1069 EOF
1070 }
1071
1072 check_type(){
1073     log check_type "$@"
1074     headers=$1
1075     type=$2
1076     shift 2
1077     disable_safe "$type"
1078     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1079 }
1080
1081 check_struct(){
1082     log check_struct "$@"
1083     headers=$1
1084     struct=$2
1085     member=$3
1086     shift 3
1087     disable_safe "${struct}_${member}"
1088     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1089         enable_safe "${struct}_${member}"
1090 }
1091
1092 check_builtin(){
1093     log check_builtin "$@"
1094     name=$1
1095     headers=$2
1096     builtin=$3
1097     shift 3
1098     disable "$name"
1099     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1100 }
1101
1102 require(){
1103     name="$1"
1104     header="$2"
1105     func="$3"
1106     shift 3
1107     check_lib $header $func "$@" || die "ERROR: $name not found"
1108 }
1109
1110 require2(){
1111     name="$1"
1112     headers="$2"
1113     func="$3"
1114     shift 3
1115     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1116 }
1117
1118 require_cpp(){
1119     name="$1"
1120     headers="$2"
1121     classes="$3"
1122     shift 3
1123     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1124 }
1125
1126 require_pkg_config(){
1127     pkg="$1"
1128     check_pkg_config "$@" || die "ERROR: $pkg not found"
1129     add_cflags    $(get_safe ${pkg}_cflags)
1130     add_extralibs $(get_safe ${pkg}_libs)
1131 }
1132
1133 require_libfreetype(){
1134     log require_libfreetype "$@"
1135     pkg="freetype2"
1136     check_cmd $pkg_config --exists --print-errors $pkg \
1137       || die "ERROR: $pkg not found"
1138     pkg_cflags=$($pkg_config --cflags $pkg)
1139     pkg_libs=$($pkg_config --libs $pkg)
1140     {
1141         echo "#include <ft2build.h>"
1142         echo "#include FT_FREETYPE_H"
1143         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1144         echo "int main(void) { return 0; }"
1145     } | check_ld "cc" $pkg_cflags $pkg_libs \
1146       && set_safe ${pkg}_cflags $pkg_cflags \
1147       && set_safe ${pkg}_libs   $pkg_libs \
1148       || die "ERROR: $pkg not found"
1149     add_cflags    $(get_safe ${pkg}_cflags)
1150     add_extralibs $(get_safe ${pkg}_libs)
1151 }
1152
1153 hostcc_e(){
1154     eval printf '%s\\n' $HOSTCC_E
1155 }
1156
1157 hostcc_o(){
1158     eval printf '%s\\n' $HOSTCC_O
1159 }
1160
1161 check_host_cc(){
1162     log check_host_cc "$@"
1163     cat > $TMPC
1164     log_file $TMPC
1165     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1166 }
1167
1168 check_host_cpp(){
1169     log check_host_cpp "$@"
1170     cat > $TMPC
1171     log_file $TMPC
1172     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1173 }
1174
1175 check_host_cppflags(){
1176     log check_host_cppflags "$@"
1177     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1178 int x;
1179 EOF
1180 }
1181
1182 check_host_cflags(){
1183     log check_host_cflags "$@"
1184     set -- $($host_cflags_filter "$@")
1185     check_host_cc "$@" <<EOF && append host_cflags "$@"
1186 int x;
1187 EOF
1188 }
1189
1190 check_host_cpp_condition(){
1191     log check_host_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_host_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 apply(){
1204     file=$1
1205     shift
1206     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1207 }
1208
1209 cp_if_changed(){
1210     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1211     mkdir -p "$(dirname $2)"
1212     $cp_f "$1" "$2"
1213 }
1214
1215 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1216 # system-dependent things.
1217
1218 COMPONENT_LIST="
1219     bsfs
1220     decoders
1221     demuxers
1222     encoders
1223     filters
1224     hwaccels
1225     indevs
1226     muxers
1227     outdevs
1228     parsers
1229     protocols
1230 "
1231
1232 EXAMPLE_LIST="
1233     decoding_encoding_example
1234     demuxing_decoding_example
1235     filtering_audio_example
1236     filtering_video_example
1237     metadata_example
1238     muxing_example
1239     resampling_audio_example
1240     scaling_video_example
1241     transcode_aac_example
1242 "
1243
1244 EXTERNAL_LIBRARY_LIST="
1245     avisynth
1246     bzlib
1247     crystalhd
1248     fontconfig
1249     frei0r
1250     gnutls
1251     iconv
1252     ladspa
1253     libaacplus
1254     libass
1255     libbluray
1256     libcaca
1257     libcdio
1258     libcelt
1259     libdc1394
1260     libfaac
1261     libfdk_aac
1262     libflite
1263     libfreetype
1264     libgme
1265     libgsm
1266     libiec61883
1267     libilbc
1268     libmodplug
1269     libmp3lame
1270     libnut
1271     libopencore_amrnb
1272     libopencore_amrwb
1273     libopencv
1274     libopenjpeg
1275     libopus
1276     libpulse
1277     libquvi
1278     librtmp
1279     libschroedinger
1280     libshine
1281     libsoxr
1282     libspeex
1283     libssh
1284     libstagefright_h264
1285     libtheora
1286     libtwolame
1287     libutvideo
1288     libv4l2
1289     libvidstab
1290     libvo_aacenc
1291     libvo_amrwbenc
1292     libvorbis
1293     libvpx
1294     libwavpack
1295     libwebp
1296     libx264
1297     libxavs
1298     libxvid
1299     libzmq
1300     libzvbi
1301     openal
1302     opencl
1303     openssl
1304     x11grab
1305     zlib
1306 "
1307
1308 DOCUMENT_LIST="
1309     doc
1310     htmlpages
1311     manpages
1312     podpages
1313     txtpages
1314 "
1315
1316 HWACCEL_LIST="
1317     dxva2
1318     vaapi
1319     vda
1320     vdpau
1321     xvmc
1322 "
1323
1324 LIBRARY_LIST="
1325     avcodec
1326     avdevice
1327     avfilter
1328     avformat
1329     avresample
1330     avutil
1331     postproc
1332     swresample
1333     swscale
1334 "
1335
1336 PROGRAM_LIST="
1337     ffplay
1338     ffprobe
1339     ffserver
1340     ffmpeg
1341 "
1342
1343 CONFIG_LIST="
1344     $COMPONENT_LIST
1345     $DOCUMENT_LIST
1346     $EXAMPLE_LIST
1347     $EXTERNAL_LIBRARY_LIST
1348     $HWACCEL_LIST
1349     $LIBRARY_LIST
1350     $PROGRAM_LIST
1351     dct
1352     dwt
1353     error_resilience
1354     fast_unaligned
1355     fft
1356     ftrapv
1357     gpl
1358     gray
1359     hardcoded_tables
1360     incompatible_libav_abi
1361     incompatible_fork_abi
1362     lsp
1363     lzo
1364     mdct
1365     memalign_hack
1366     memory_poisoning
1367     network
1368     nonfree
1369     pic
1370     raise_major
1371     rdft
1372     runtime_cpudetect
1373     safe_bitstream_reader
1374     shared
1375     small
1376     sram
1377     static
1378     swscale_alpha
1379     thumb
1380     version3
1381     xmm_clobber_test
1382 "
1383
1384 THREADS_LIST='
1385     pthreads
1386     w32threads
1387     os2threads
1388 '
1389
1390 ATOMICS_LIST='
1391     atomics_gcc
1392     atomics_suncc
1393     atomics_win32
1394 '
1395
1396 ARCH_LIST='
1397     aarch64
1398     alpha
1399     arm
1400     avr32
1401     avr32_ap
1402     avr32_uc
1403     bfin
1404     ia64
1405     m68k
1406     mips
1407     mips64
1408     parisc
1409     ppc
1410     ppc64
1411     s390
1412     sh4
1413     sparc
1414     sparc64
1415     tilegx
1416     tilepro
1417     tomi
1418     x86
1419     x86_32
1420     x86_64
1421 '
1422
1423 ARCH_EXT_LIST_ARM='
1424     armv5te
1425     armv6
1426     armv6t2
1427     neon
1428     vfp
1429     vfpv3
1430 '
1431
1432 ARCH_EXT_LIST_X86='
1433     amd3dnow
1434     amd3dnowext
1435     avx
1436     avx2
1437     fma4
1438     i686
1439     mmx
1440     mmxext
1441     sse
1442     sse2
1443     sse3
1444     sse4
1445     sse42
1446     ssse3
1447 '
1448
1449 ARCH_EXT_LIST="
1450     $ARCH_EXT_LIST_ARM
1451     $ARCH_EXT_LIST_X86
1452     altivec
1453     ppc4xx
1454     vis
1455     mipsfpu
1456     mips32r2
1457     mipsdspr1
1458     mipsdspr2
1459 "
1460
1461 HAVE_LIST_CMDLINE='
1462     inline_asm
1463     symver
1464     yasm
1465 '
1466
1467 HAVE_LIST_PUB='
1468     bigendian
1469     fast_unaligned
1470     incompatible_libav_abi
1471     incompatible_fork_abi
1472 '
1473
1474 MATH_FUNCS="
1475     atanf
1476     atan2f
1477     cbrt
1478     cbrtf
1479     cosf
1480     exp2
1481     exp2f
1482     expf
1483     isinf
1484     isnan
1485     ldexpf
1486     llrint
1487     llrintf
1488     log2
1489     log2f
1490     log10f
1491     lrint
1492     lrintf
1493     powf
1494     rint
1495     round
1496     roundf
1497     sinf
1498     trunc
1499     truncf
1500 "
1501
1502 HAVE_LIST="
1503     $ARCH_EXT_LIST
1504     $(add_suffix _external $ARCH_EXT_LIST)
1505     $(add_suffix _inline   $ARCH_EXT_LIST)
1506     $HAVE_LIST_CMDLINE
1507     $HAVE_LIST_PUB
1508     $THREADS_LIST
1509     $ATOMICS_LIST
1510     $MATH_FUNCS
1511     access
1512     aligned_malloc
1513     aligned_stack
1514     alsa_asoundlib_h
1515     altivec_h
1516     arpa_inet_h
1517     asm_mod_q
1518     asm_mod_y
1519     asm_types_h
1520     atomic_cas_ptr
1521     atomics_native
1522     attribute_may_alias
1523     attribute_packed
1524     cdio_paranoia_h
1525     cdio_paranoia_paranoia_h
1526     CL_cl_h
1527     clock_gettime
1528     closesocket
1529     CommandLineToArgvW
1530     cpunop
1531     CryptGenRandom
1532     dcbzl
1533     dev_bktr_ioctl_bt848_h
1534     dev_bktr_ioctl_meteor_h
1535     dev_ic_bt8xx_h
1536     dev_video_bktr_ioctl_bt848_h
1537     dev_video_meteor_ioctl_meteor_h
1538     direct_h
1539     dlfcn_h
1540     dlopen
1541     dos_paths
1542     dxva_h
1543     ebp_available
1544     ebx_available
1545     fast_64bit
1546     fast_clz
1547     fast_cmov
1548     fcntl
1549     fork
1550     getaddrinfo
1551     gethrtime
1552     getopt
1553     GetProcessAffinityMask
1554     GetProcessMemoryInfo
1555     GetProcessTimes
1556     GetSystemTimeAsFileTime
1557     getrusage
1558     getservbyport
1559     gettimeofday
1560     glob
1561     gnu_as
1562     gnu_windres
1563     gsm_h
1564     ibm_asm
1565     inet_aton
1566     io_h
1567     inline_asm_labels
1568     isatty
1569     jack_port_get_latency_range
1570     kbhit
1571     ldbrx
1572     libc_msvcrt
1573     libdc1394_1
1574     libdc1394_2
1575     local_aligned_16
1576     local_aligned_8
1577     localtime_r
1578     loongson
1579     lzo1x_999_compress
1580     machine_ioctl_bt848_h
1581     machine_ioctl_meteor_h
1582     machine_rw_barrier
1583     makeinfo
1584     malloc_h
1585     MapViewOfFile
1586     memalign
1587     MemoryBarrier
1588     mkstemp
1589     mm_empty
1590     mmap
1591     mprotect
1592     nanosleep
1593     openjpeg_1_5_openjpeg_h
1594     PeekNamedPipe
1595     perl
1596     pod2man
1597     poll_h
1598     posix_memalign
1599     pragma_deprecated
1600     pthread_cancel
1601     rdtsc
1602     rsync_contimeout
1603     sarestart
1604     sched_getaffinity
1605     sdl
1606     SetConsoleTextAttribute
1607     setmode
1608     setrlimit
1609     Sleep
1610     sndio_h
1611     socklen_t
1612     soundcard_h
1613     strerror_r
1614     struct_addrinfo
1615     struct_group_source_req
1616     struct_ip_mreq_source
1617     struct_ipv6_mreq
1618     struct_pollfd
1619     struct_rusage_ru_maxrss
1620     struct_sctp_event_subscribe
1621     struct_sockaddr_in6
1622     struct_sockaddr_sa_len
1623     struct_sockaddr_storage
1624     struct_stat_st_mtim_tv_nsec
1625     struct_v4l2_frmivalenum_discrete
1626     symver_asm_label
1627     symver_gnu_asm
1628     sync_val_compare_and_swap
1629     sysconf
1630     sysctl
1631     sys_mman_h
1632     sys_param_h
1633     sys_resource_h
1634     sys_select_h
1635     sys_soundcard_h
1636     sys_time_h
1637     sys_un_h
1638     sys_videoio_h
1639     termios_h
1640     texi2html
1641     threads
1642     unistd_h
1643     usleep
1644     vdpau_x11
1645     vfp_args
1646     VirtualAlloc
1647     windows_h
1648     winsock2_h
1649     xform_asm
1650     xlib
1651     xmm_clobbers
1652 "
1653
1654 # options emitted with CONFIG_ prefix but not available on the command line
1655 CONFIG_EXTRA="
1656     aandcttables
1657     ac3dsp
1658     audio_frame_queue
1659     dsputil
1660     exif
1661     frame_thread_encoder
1662     gcrypt
1663     golomb
1664     gplv3
1665     h263dsp
1666     h264chroma
1667     h264dsp
1668     h264pred
1669     h264qpel
1670     hpeldsp
1671     huffman
1672     lgplv3
1673     lpc
1674     mpegaudio
1675     mpegaudiodsp
1676     mpegvideo
1677     mpegvideoenc
1678     nettle
1679     rangecoder
1680     riffdec
1681     riffenc
1682     rtpdec
1683     rtpenc_chain
1684     sinewin
1685     videodsp
1686     vp3dsp
1687 "
1688
1689 CMDLINE_SELECT="
1690     $ARCH_EXT_LIST
1691     $CONFIG_LIST
1692     $HAVE_LIST_CMDLINE
1693     $THREADS_LIST
1694     asm
1695     cross_compile
1696     debug
1697     extra_warnings
1698     logging
1699     lto
1700     optimizations
1701     rpath
1702     stripping
1703 "
1704
1705 PATHS_LIST='
1706     bindir
1707     datadir
1708     docdir
1709     incdir
1710     libdir
1711     mandir
1712     prefix
1713     shlibdir
1714 '
1715
1716 CMDLINE_SET="
1717     $PATHS_LIST
1718     ar
1719     arch
1720     as
1721     assert_level
1722     build_suffix
1723     cc
1724     cpu
1725     cross_prefix
1726     cxx
1727     dep_cc
1728     extra_version
1729     host_cc
1730     host_cflags
1731     host_ld
1732     host_ldflags
1733     host_libs
1734     host_os
1735     install
1736     ld
1737     logfile
1738     malloc_prefix
1739     nm
1740     optflags
1741     pkg_config
1742     progs_suffix
1743     random_seed
1744     samples
1745     strip
1746     sysinclude
1747     sysroot
1748     target_exec
1749     target_os
1750     target_path
1751     target_samples
1752     tempprefix
1753     toolchain
1754     valgrind
1755     yasmexe
1756 "
1757
1758 CMDLINE_APPEND="
1759     extra_cflags
1760     extra_cxxflags
1761     host_cppflags
1762 "
1763
1764 # code dependency declarations
1765
1766 # architecture extensions
1767
1768 armv5te_deps="arm"
1769 armv6_deps="arm"
1770 armv6t2_deps="arm"
1771 neon_deps="arm"
1772 vfp_deps="arm"
1773 vfpv3_deps="vfp"
1774
1775 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1776
1777 mipsfpu_deps="mips"
1778 mips32r2_deps="mips"
1779 mipsdspr1_deps="mips"
1780 mipsdspr2_deps="mips"
1781
1782 altivec_deps="ppc"
1783 ppc4xx_deps="ppc"
1784
1785 vis_deps="sparc"
1786
1787 cpunop_deps="i686"
1788 x86_64_select="i686"
1789 x86_64_suggest="fast_cmov"
1790
1791 amd3dnow_deps="mmx"
1792 amd3dnowext_deps="amd3dnow"
1793 mmx_deps="x86"
1794 mmxext_deps="mmx"
1795 sse_deps="mmxext"
1796 sse2_deps="sse"
1797 sse3_deps="sse2"
1798 ssse3_deps="sse3"
1799 sse4_deps="ssse3"
1800 sse42_deps="sse4"
1801 avx_deps="sse42"
1802 fma4_deps="avx"
1803 avx2_deps="avx"
1804
1805 mmx_external_deps="yasm"
1806 mmx_inline_deps="inline_asm"
1807 mmx_suggest="mmx_external mmx_inline"
1808
1809 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1810     eval dep=\$${ext}_deps
1811     eval ${ext}_external_deps='"${dep}_external"'
1812     eval ${ext}_inline_deps='"${dep}_inline"'
1813     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1814 done
1815
1816 aligned_stack_if_any="ppc x86"
1817 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1818 fast_clz_if_any="alpha avr32 mips ppc x86"
1819 fast_unaligned_if_any="ppc x86"
1820
1821 need_memalign="altivec neon sse"
1822
1823 # system capabilities
1824 log2_deps="!libc_msvcrt"
1825
1826 symver_if_any="symver_asm_label symver_gnu_asm"
1827
1828 # threading support
1829 atomics_gcc_if="sync_val_compare_and_swap"
1830 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1831 atomics_win32_if="MemoryBarrier"
1832 atomics_native_if_any="$ATOMICS_LIST"
1833 threads_if_any="$THREADS_LIST"
1834
1835 # subsystems
1836 dct_select="rdft"
1837 error_resilience_select="dsputil"
1838 frame_thread_encoder_deps="encoders threads"
1839 lpc_select="dsputil"
1840 mdct_select="fft"
1841 rdft_select="fft"
1842 mpegaudio_select="mpegaudiodsp"
1843 mpegaudiodsp_select="dct"
1844 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1845 mpegvideoenc_select="mpegvideo"
1846
1847 # decoders / encoders
1848 aac_decoder_select="mdct sinewin"
1849 aac_encoder_select="audio_frame_queue mdct sinewin"
1850 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1851 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1852 ac3_encoder_select="mdct ac3dsp dsputil"
1853 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1854 aic_decoder_select="dsputil golomb"
1855 alac_encoder_select="lpc"
1856 als_decoder_select="dsputil"
1857 amrnb_decoder_select="lsp"
1858 amrwb_decoder_select="lsp"
1859 amv_decoder_select="dsputil hpeldsp exif"
1860 amv_encoder_select="aandcttables"
1861 ape_decoder_select="dsputil"
1862 asv1_decoder_select="dsputil"
1863 asv1_encoder_select="dsputil"
1864 asv2_decoder_select="dsputil"
1865 asv2_encoder_select="dsputil"
1866 atrac1_decoder_select="mdct sinewin"
1867 atrac3_decoder_select="mdct"
1868 avrn_decoder_select="exif"
1869 bink_decoder_select="dsputil hpeldsp"
1870 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1871 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1872 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1873 cllc_decoder_select="dsputil"
1874 comfortnoise_encoder_select="lpc"
1875 cook_decoder_select="dsputil mdct sinewin"
1876 cscd_decoder_select="lzo"
1877 cscd_decoder_suggest="zlib"
1878 dca_decoder_select="mdct"
1879 dirac_decoder_select="dsputil dwt golomb videodsp"
1880 dnxhd_decoder_select="dsputil"
1881 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1882 dvvideo_decoder_select="dsputil"
1883 dvvideo_encoder_select="dsputil"
1884 dxa_decoder_select="zlib"
1885 eac3_decoder_select="ac3_decoder"
1886 eac3_encoder_select="ac3_encoder"
1887 eamad_decoder_select="aandcttables dsputil mpegvideo"
1888 eatgq_decoder_select="aandcttables"
1889 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1890 exr_decoder_select="zlib"
1891 ffv1_decoder_select="dsputil golomb rangecoder"
1892 ffv1_encoder_select="dsputil rangecoder"
1893 ffvhuff_decoder_select="dsputil"
1894 ffvhuff_encoder_select="dsputil huffman"
1895 flac_decoder_select="golomb"
1896 flac_encoder_select="dsputil golomb lpc"
1897 flashsv_decoder_select="zlib"
1898 flashsv_encoder_select="zlib"
1899 flashsv2_encoder_select="zlib"
1900 flashsv2_decoder_select="zlib"
1901 flv_decoder_select="h263_decoder"
1902 flv_encoder_select="h263_encoder"
1903 fourxm_decoder_select="dsputil"
1904 fraps_decoder_select="dsputil huffman"
1905 g2m_decoder_select="dsputil zlib"
1906 g729_decoder_select="dsputil"
1907 h261_decoder_select="error_resilience mpegvideo"
1908 h261_encoder_select="aandcttables mpegvideoenc"
1909 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1910 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1911 h263i_decoder_select="h263_decoder"
1912 h263p_encoder_select="h263_encoder"
1913 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1914 h264_decoder_suggest="error_resilience"
1915 hevc_decoder_select="dsputil golomb videodsp"
1916 huffyuv_decoder_select="dsputil"
1917 huffyuv_encoder_select="dsputil huffman"
1918 iac_decoder_select="dsputil fft mdct sinewin"
1919 imc_decoder_select="dsputil fft mdct sinewin"
1920 indeo3_decoder_select="hpeldsp"
1921 interplay_video_decoder_select="hpeldsp"
1922 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1923 jpegls_encoder_select="golomb"
1924 jv_decoder_select="dsputil"
1925 lagarith_decoder_select="dsputil"
1926 ljpeg_encoder_select="aandcttables mpegvideoenc"
1927 loco_decoder_select="golomb"
1928 mdec_decoder_select="dsputil error_resilience mpegvideo"
1929 metasound_decoder_select="lsp mdct sinewin"
1930 mimic_decoder_select="dsputil hpeldsp"
1931 mjpeg_decoder_select="dsputil hpeldsp exif"
1932 mjpegb_decoder_select="dsputil hpeldsp exif"
1933 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1934 mlp_decoder_select="dsputil mlp_parser"
1935 motionpixels_decoder_select="dsputil"
1936 mp1_decoder_select="mpegaudio"
1937 mp1float_decoder_select="mpegaudio"
1938 mp2_decoder_select="mpegaudio"
1939 mp2float_decoder_select="mpegaudio"
1940 mp3_decoder_select="mpegaudio"
1941 mp3adu_decoder_select="mpegaudio"
1942 mp3adufloat_decoder_select="mpegaudio"
1943 mp3float_decoder_select="mpegaudio"
1944 mp3on4_decoder_select="mpegaudio"
1945 mp3on4float_decoder_select="mpegaudio"
1946 mpc7_decoder_select="dsputil mpegaudiodsp"
1947 mpc8_decoder_select="dsputil mpegaudiodsp"
1948 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1949 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1950 mpeg1video_decoder_select="error_resilience mpegvideo"
1951 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1952 mpeg2video_decoder_select="error_resilience mpegvideo"
1953 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1954 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1955 mpeg4_encoder_select="h263_encoder"
1956 msmpeg4v1_decoder_select="h263_decoder"
1957 msmpeg4v2_decoder_select="h263_decoder"
1958 msmpeg4v2_encoder_select="h263_encoder"
1959 msmpeg4v3_decoder_select="h263_decoder"
1960 msmpeg4v3_encoder_select="h263_encoder"
1961 mss2_decoder_select="error_resilience vc1_decoder"
1962 mxpeg_decoder_select="dsputil hpeldsp exif"
1963 nellymoser_decoder_select="mdct sinewin"
1964 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1965 nuv_decoder_select="dsputil lzo"
1966 png_decoder_select="zlib"
1967 png_encoder_select="dsputil zlib"
1968 prores_decoder_select="dsputil"
1969 prores_encoder_select="dsputil"
1970 qcelp_decoder_select="lsp"
1971 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1972 ra_144_encoder_select="audio_frame_queue lpc"
1973 ralf_decoder_select="golomb"
1974 rtjpeg_decoder_select="dsputil"
1975 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1976 rv10_encoder_select="h263_encoder"
1977 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1978 rv20_encoder_select="h263_encoder"
1979 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1980 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1981 shorten_decoder_select="golomb"
1982 sipr_decoder_select="lsp"
1983 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1984 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1985 sonic_decoder_select="golomb"
1986 sonic_encoder_select="golomb"
1987 sonic_ls_encoder_select="golomb"
1988 sp5x_decoder_select="dsputil hpeldsp exif"
1989 svq1_decoder_select="hpeldsp"
1990 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1991 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1992 svq3_decoder_suggest="error_resilience zlib"
1993 tak_decoder_select="dsputil"
1994 theora_decoder_select="vp3_decoder"
1995 tiff_decoder_suggest="zlib"
1996 tiff_encoder_suggest="zlib"
1997 thp_decoder_select="dsputil hpeldsp exif"
1998 truehd_decoder_select="mlp_parser"
1999 truemotion2_decoder_select="dsputil"
2000 truespeech_decoder_select="dsputil"
2001 tscc_decoder_select="zlib"
2002 twinvq_decoder_select="mdct lsp sinewin"
2003 utvideo_decoder_select="dsputil"
2004 utvideo_encoder_select="dsputil huffman"
2005 vble_decoder_select="dsputil"
2006 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
2007 vc1image_decoder_select="vc1_decoder"
2008 vorbis_decoder_select="mdct"
2009 vorbis_encoder_select="mdct"
2010 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2011 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2012 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2013 vp6a_decoder_select="vp6_decoder"
2014 vp6f_decoder_select="vp6_decoder"
2015 vp8_decoder_select="h264pred videodsp"
2016 vp9_decoder_select="videodsp"
2017 webp_decoder_select="vp8_decoder"
2018 wmapro_decoder_select="mdct sinewin"
2019 wmav1_decoder_select="mdct sinewin"
2020 wmav1_encoder_select="mdct sinewin"
2021 wmav2_decoder_select="mdct sinewin"
2022 wmav2_encoder_select="mdct sinewin"
2023 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2024 wmv1_decoder_select="h263_decoder"
2025 wmv1_encoder_select="h263_encoder"
2026 wmv2_decoder_select="h263_decoder videodsp"
2027 wmv2_encoder_select="h263_encoder"
2028 wmv3_decoder_select="vc1_decoder"
2029 wmv3image_decoder_select="wmv3_decoder"
2030 zerocodec_decoder_select="zlib"
2031 zlib_decoder_select="zlib"
2032 zlib_encoder_select="zlib"
2033 zmbv_decoder_select="zlib"
2034 zmbv_encoder_select="zlib"
2035
2036 # hardware accelerators
2037 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2038 dxva2_deps="dxva2api_h"
2039 vaapi_deps="va_va_h"
2040 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2041 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2042 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2043 xvmc_deps="X11_extensions_XvMClib_h"
2044
2045 h263_vaapi_hwaccel_deps="vaapi"
2046 h263_vaapi_hwaccel_select="h263_decoder"
2047 h263_vdpau_hwaccel_deps="vdpau"
2048 h263_vdpau_hwaccel_select="h263_decoder"
2049 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2050 h264_dxva2_hwaccel_deps="dxva2"
2051 h264_dxva2_hwaccel_select="h264_decoder"
2052 h264_vaapi_hwaccel_deps="vaapi"
2053 h264_vaapi_hwaccel_select="h264_decoder"
2054 h264_vda_decoder_deps="vda"
2055 h264_vda_decoder_select="h264_decoder"
2056 h264_vda_hwaccel_deps="vda"
2057 h264_vda_hwaccel_select="h264_decoder"
2058 h264_vdpau_decoder_deps="vdpau"
2059 h264_vdpau_decoder_select="h264_decoder"
2060 h264_vdpau_hwaccel_deps="vdpau"
2061 h264_vdpau_hwaccel_select="h264_decoder"
2062 mpeg_vdpau_decoder_deps="vdpau"
2063 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2064 mpeg_xvmc_hwaccel_deps="xvmc"
2065 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2066 mpeg1_vdpau_decoder_deps="vdpau"
2067 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2068 mpeg1_vdpau_hwaccel_deps="vdpau"
2069 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2070 mpeg1_xvmc_hwaccel_deps="xvmc"
2071 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2072 mpeg2_crystalhd_decoder_select="crystalhd"
2073 mpeg2_dxva2_hwaccel_deps="dxva2"
2074 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2075 mpeg2_vaapi_hwaccel_deps="vaapi"
2076 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2077 mpeg2_vdpau_hwaccel_deps="vdpau"
2078 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2079 mpeg2_xvmc_hwaccel_deps="xvmc"
2080 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2081 mpeg4_crystalhd_decoder_select="crystalhd"
2082 mpeg4_vaapi_hwaccel_deps="vaapi"
2083 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2084 mpeg4_vdpau_decoder_deps="vdpau"
2085 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2086 mpeg4_vdpau_hwaccel_deps="vdpau"
2087 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2088 msmpeg4_crystalhd_decoder_select="crystalhd"
2089 vc1_crystalhd_decoder_select="crystalhd"
2090 vc1_dxva2_hwaccel_deps="dxva2"
2091 vc1_dxva2_hwaccel_select="vc1_decoder"
2092 vc1_vaapi_hwaccel_deps="vaapi"
2093 vc1_vaapi_hwaccel_select="vc1_decoder"
2094 vc1_vdpau_decoder_deps="vdpau"
2095 vc1_vdpau_decoder_select="vc1_decoder"
2096 vc1_vdpau_hwaccel_deps="vdpau"
2097 vc1_vdpau_hwaccel_select="vc1_decoder"
2098 wmv3_crystalhd_decoder_select="crystalhd"
2099 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2100 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2101 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2102 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2103
2104 # parsers
2105 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2106 hevc_parser_select="hevc_decoder"
2107 mpeg4video_parser_select="error_resilience mpegvideo"
2108 mpegvideo_parser_select="error_resilience mpegvideo"
2109 vc1_parser_select="mpegvideo"
2110
2111 # external libraries
2112 libaacplus_encoder_deps="libaacplus"
2113 libcelt_decoder_deps="libcelt"
2114 libfaac_encoder_deps="libfaac"
2115 libfaac_encoder_select="audio_frame_queue"
2116 libfdk_aac_decoder_deps="libfdk_aac"
2117 libfdk_aac_encoder_deps="libfdk_aac"
2118 libfdk_aac_encoder_select="audio_frame_queue"
2119 libgme_demuxer_deps="libgme"
2120 libgsm_decoder_deps="libgsm"
2121 libgsm_encoder_deps="libgsm"
2122 libgsm_ms_decoder_deps="libgsm"
2123 libgsm_ms_encoder_deps="libgsm"
2124 libilbc_decoder_deps="libilbc"
2125 libilbc_encoder_deps="libilbc"
2126 libmodplug_demuxer_deps="libmodplug"
2127 libmp3lame_encoder_deps="libmp3lame"
2128 libmp3lame_encoder_select="audio_frame_queue"
2129 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2130 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2131 libopencore_amrnb_encoder_select="audio_frame_queue"
2132 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2133 libopenjpeg_decoder_deps="libopenjpeg"
2134 libopenjpeg_encoder_deps="libopenjpeg"
2135 libopus_decoder_deps="libopus"
2136 libopus_encoder_deps="libopus"
2137 libopus_encoder_select="audio_frame_queue"
2138 libquvi_demuxer_deps="libquvi"
2139 libschroedinger_decoder_deps="libschroedinger"
2140 libschroedinger_encoder_deps="libschroedinger"
2141 libshine_encoder_deps="libshine"
2142 libshine_encoder_select="audio_frame_queue"
2143 libspeex_decoder_deps="libspeex"
2144 libspeex_encoder_deps="libspeex"
2145 libspeex_encoder_select="audio_frame_queue"
2146 libstagefright_h264_decoder_deps="libstagefright_h264"
2147 libtheora_encoder_deps="libtheora"
2148 libtwolame_encoder_deps="libtwolame"
2149 libvo_aacenc_encoder_deps="libvo_aacenc"
2150 libvo_aacenc_encoder_select="audio_frame_queue"
2151 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2152 libvorbis_decoder_deps="libvorbis"
2153 libvorbis_encoder_deps="libvorbis"
2154 libvorbis_encoder_select="audio_frame_queue"
2155 libvpx_vp8_decoder_deps="libvpx"
2156 libvpx_vp8_encoder_deps="libvpx"
2157 libvpx_vp9_decoder_deps="libvpx"
2158 libvpx_vp9_encoder_deps="libvpx"
2159 libwavpack_encoder_deps="libwavpack"
2160 libwebp_encoder_deps="libwebp"
2161 libx264_encoder_deps="libx264"
2162 libx264rgb_encoder_deps="libx264"
2163 libxavs_encoder_deps="libxavs"
2164 libxvid_encoder_deps="libxvid"
2165 libutvideo_decoder_deps="libutvideo"
2166 libutvideo_encoder_deps="libutvideo"
2167 libzvbi_teletext_decoder_deps="libzvbi"
2168
2169 # demuxers / muxers
2170 ac3_demuxer_select="ac3_parser"
2171 asf_demuxer_select="riffdec"
2172 asf_muxer_select="riffenc"
2173 asf_stream_muxer_select="asf_muxer"
2174 avi_demuxer_select="riffdec"
2175 avi_muxer_select="riffenc"
2176 avisynth_demuxer_deps="avisynth"
2177 avisynth_demuxer_select="riffdec"
2178 caf_demuxer_select="riffdec"
2179 dirac_demuxer_select="dirac_parser"
2180 dts_demuxer_select="dca_parser"
2181 dtshd_demuxer_select="dca_parser"
2182 dxa_demuxer_select="riffdec"
2183 eac3_demuxer_select="ac3_parser"
2184 f4v_muxer_select="mov_muxer"
2185 flac_demuxer_select="flac_parser"
2186 hds_muxer_select="flv_muxer"
2187 hls_muxer_select="mpegts_muxer"
2188 ipod_muxer_select="mov_muxer"
2189 ismv_muxer_select="mov_muxer"
2190 libnut_demuxer_deps="libnut"
2191 libnut_muxer_deps="libnut"
2192 matroska_audio_muxer_select="matroska_muxer"
2193 matroska_demuxer_select="riffdec"
2194 matroska_demuxer_suggest="bzlib lzo zlib"
2195 matroska_muxer_select="riffenc"
2196 mmf_muxer_select="riffenc"
2197 mov_demuxer_select="riffdec"
2198 mov_demuxer_suggest="zlib"
2199 mov_muxer_select="riffenc rtpenc_chain"
2200 mp3_demuxer_select="mpegaudio_parser"
2201 mp4_muxer_select="mov_muxer"
2202 mpegts_muxer_select="adts_muxer latm_muxer"
2203 mpegtsraw_demuxer_select="mpegts_demuxer"
2204 mxf_d10_muxer_select="mxf_muxer"
2205 nut_muxer_select="riffenc"
2206 nuv_demuxer_select="riffdec"
2207 ogg_demuxer_select="golomb"
2208 psp_muxer_select="mov_muxer"
2209 rtp_demuxer_select="sdp_demuxer"
2210 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2211 rtsp_demuxer_select="http_protocol rtpdec"
2212 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2213 sap_demuxer_select="sdp_demuxer"
2214 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2215 sdp_demuxer_select="rtpdec"
2216 smoothstreaming_muxer_select="ismv_muxer"
2217 spdif_muxer_select="aac_parser"
2218 tak_demuxer_select="tak_parser"
2219 tg2_muxer_select="mov_muxer"
2220 tgp_muxer_select="mov_muxer"
2221 vobsub_demuxer_select="mpegps_demuxer"
2222 w64_demuxer_select="wav_demuxer"
2223 w64_muxer_select="wav_muxer"
2224 wav_demuxer_select="riffdec"
2225 wav_muxer_select="riffenc"
2226 webm_muxer_select="riffenc"
2227 wtv_demuxer_select="riffdec"
2228 xmv_demuxer_select="riffdec"
2229 xwma_demuxer_select="riffdec"
2230
2231 # indevs / outdevs
2232 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2233 alsa_outdev_deps="alsa_asoundlib_h"
2234 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2235 caca_outdev_deps="libcaca"
2236 dshow_indev_deps="IBaseFilter"
2237 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2238 dv1394_indev_deps="dv1394"
2239 dv1394_indev_select="dv_demuxer"
2240 fbdev_indev_deps="linux_fb_h"
2241 fbdev_outdev_deps="linux_fb_h"
2242 iec61883_indev_deps="libiec61883"
2243 jack_indev_deps="jack_jack_h sem_timedwait"
2244 lavfi_indev_deps="avfilter"
2245 libcdio_indev_deps="libcdio"
2246 libdc1394_indev_deps="libdc1394"
2247 libv4l2_indev_deps="libv4l2"
2248 openal_indev_deps="openal"
2249 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2250 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2251 pulse_indev_deps="libpulse"
2252 pulse_outdev_deps="libpulse"
2253 sdl_outdev_deps="sdl"
2254 sndio_indev_deps="sndio_h"
2255 sndio_outdev_deps="sndio_h"
2256 v4l_indev_deps="linux_videodev_h"
2257 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2258 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2259 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2260 vfwcap_indev_extralibs="-lavicap32"
2261 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2262 xv_outdev_extralibs="-lXv -lX11 -lXext"
2263 x11grab_indev_deps="x11grab"
2264
2265 # protocols
2266 bluray_protocol_deps="libbluray"
2267 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2268 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2269 ffrtmpcrypt_protocol_select="tcp_protocol"
2270 ffrtmphttp_protocol_deps="!librtmp_protocol"
2271 ffrtmphttp_protocol_select="http_protocol"
2272 ftp_protocol_select="tcp_protocol"
2273 gopher_protocol_select="network"
2274 httpproxy_protocol_select="tcp_protocol"
2275 http_protocol_select="tcp_protocol"
2276 https_protocol_select="tls_protocol"
2277 librtmp_protocol_deps="librtmp"
2278 librtmpe_protocol_deps="librtmp"
2279 librtmps_protocol_deps="librtmp"
2280 librtmpt_protocol_deps="librtmp"
2281 librtmpte_protocol_deps="librtmp"
2282 libssh_protocol_deps="libssh"
2283 mmsh_protocol_select="http_protocol"
2284 mmst_protocol_select="network"
2285 rtmp_protocol_deps="!librtmp_protocol"
2286 rtmp_protocol_select="tcp_protocol"
2287 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2288 rtmps_protocol_deps="!librtmp_protocol"
2289 rtmps_protocol_select="tls_protocol"
2290 rtmpt_protocol_select="ffrtmphttp_protocol"
2291 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2292 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2293 rtp_protocol_select="udp_protocol"
2294 sctp_protocol_deps="struct_sctp_event_subscribe"
2295 sctp_protocol_select="network"
2296 srtp_protocol_select="rtp_protocol"
2297 tcp_protocol_select="network"
2298 tls_protocol_deps_any="openssl gnutls"
2299 tls_protocol_select="tcp_protocol"
2300 udp_protocol_select="network"
2301 unix_protocol_deps="sys_un_h"
2302 unix_protocol_select="network"
2303
2304 # filters
2305 aconvert_filter_deps="swresample"
2306 amovie_filter_deps="avcodec avformat"
2307 aresample_filter_deps="swresample"
2308 ass_filter_deps="libass"
2309 asyncts_filter_deps="avresample"
2310 atempo_filter_deps="avcodec"
2311 atempo_filter_select="rdft"
2312 azmq_filter_deps="libzmq"
2313 blackframe_filter_deps="gpl"
2314 boxblur_filter_deps="gpl"
2315 colormatrix_filter_deps="gpl"
2316 cropdetect_filter_deps="gpl"
2317 dctdnoiz_filter_deps="avcodec"
2318 dctdnoiz_filter_select="fft"
2319 delogo_filter_deps="gpl"
2320 deshake_filter_deps="avcodec"
2321 deshake_filter_select="dsputil"
2322 drawtext_filter_deps="libfreetype"
2323 ebur128_filter_deps="gpl"
2324 flite_filter_deps="libflite"
2325 frei0r_filter_deps="frei0r dlopen"
2326 frei0r_filter_extralibs='$ldl'
2327 frei0r_src_filter_deps="frei0r dlopen"
2328 frei0r_src_filter_extralibs='$ldl'
2329 geq_filter_deps="gpl"
2330 histeq_filter_deps="gpl"
2331 hqdn3d_filter_deps="gpl"
2332 interlace_filter_deps="gpl"
2333 kerndeint_filter_deps="gpl"
2334 ladspa_filter_deps="ladspa dlopen"
2335 mcdeint_filter_deps="avcodec gpl"
2336 movie_filter_deps="avcodec avformat"
2337 mp_filter_deps="gpl avcodec swscale inline_asm"
2338 mpdecimate_filter_deps="gpl avcodec"
2339 mptestsrc_filter_deps="gpl"
2340 negate_filter_deps="lut_filter"
2341 perspective_filter_deps="gpl"
2342 resample_filter_deps="avresample"
2343 ocv_filter_deps="libopencv"
2344 owdenoise_filter_deps="gpl"
2345 pan_filter_deps="swresample"
2346 phase_filter_deps="gpl"
2347 pp_filter_deps="gpl postproc"
2348 pullup_filter_deps="gpl"
2349 removelogo_filter_deps="avcodec avformat swscale"
2350 sab_filter_deps="gpl swscale"
2351 scale_filter_deps="swscale"
2352 smartblur_filter_deps="gpl swscale"
2353 showspectrum_filter_deps="avcodec"
2354 showspectrum_filter_select="rdft"
2355 spp_filter_deps="gpl avcodec"
2356 spp_filter_select="fft"
2357 stereo3d_filter_deps="gpl"
2358 subtitles_filter_deps="avformat avcodec libass"
2359 super2xsai_filter_deps="gpl"
2360 tinterlace_filter_deps="gpl"
2361 vidstabdetect_filter_deps="libvidstab"
2362 vidstabtransform_filter_deps="libvidstab"
2363 yadif_filter_deps="gpl"
2364 pixfmts_super2xsai_test_deps="super2xsai_filter"
2365 tinterlace_merge_test_deps="tinterlace_filter"
2366 tinterlace_pad_test_deps="tinterlace_filter"
2367 zmq_filter_deps="libzmq"
2368
2369 # examples
2370 decoding_encoding_example_deps="avcodec avutil"
2371 demuxing_decoding_example_deps="avcodec avformat avutil"
2372 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2373 filtering_video_example_deps="avfilter avcodec avformat avutil"
2374 metadata_example_deps="avformat avutil"
2375 muxing_example_deps="avcodec avformat avutil swscale"
2376 resampling_audio_example_deps="avutil swresample"
2377 scaling_video_example_deps="avutil swscale"
2378 transcode_aac_example_deps="avcodec avformat swresample"
2379
2380 # libraries
2381 avcodec_deps="avutil"
2382 avdevice_deps="avutil avcodec avformat"
2383 avfilter_deps="avutil"
2384 avformat_deps="avutil avcodec"
2385 avresample_deps="avutil"
2386 postproc_deps="avutil gpl"
2387 swscale_deps="avutil"
2388
2389 # programs
2390 ffmpeg_deps="avcodec avfilter avformat swresample"
2391 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2392                null_filter
2393                setpts_filter trim_filter"
2394 ffplay_deps="avcodec avformat swscale swresample sdl"
2395 ffplay_select="rdft crop_filter"
2396 ffprobe_deps="avcodec avformat"
2397 ffserver_deps="avformat fork sarestart"
2398 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2399 ffserver_extralibs='$ldl'
2400
2401 # documentation
2402 podpages_deps="perl"
2403 manpages_deps="perl pod2man"
2404 htmlpages_deps="perl texi2html"
2405 txtpages_deps="perl makeinfo"
2406 doc_deps_any="manpages htmlpages podpages txtpages"
2407
2408 # default parameters
2409
2410 logfile="config.log"
2411
2412 # installation paths
2413 prefix_default="/usr/local"
2414 bindir_default='${prefix}/bin'
2415 datadir_default='${prefix}/share/ffmpeg'
2416 docdir_default='${prefix}/share/doc/ffmpeg'
2417 incdir_default='${prefix}/include'
2418 libdir_default='${prefix}/lib'
2419 mandir_default='${prefix}/share/man'
2420 shlibdir_default="$libdir_default"
2421
2422 # toolchain
2423 ar_default="ar"
2424 cc_default="gcc"
2425 cxx_default="g++"
2426 host_cc_default="gcc"
2427 cp_f="cp -f"
2428 install="install"
2429 ln_s="ln -s -f"
2430 nm_default="nm -g"
2431 objformat="elf"
2432 pkg_config_default=pkg-config
2433 ranlib="ranlib"
2434 strip_default="strip"
2435 yasmexe_default="yasm"
2436 windres_default="windres"
2437
2438 nogas=":"
2439
2440 # machine
2441 arch_default=$(uname -m)
2442 cpu="generic"
2443
2444 # OS
2445 target_os_default=$(tolower $(uname -s))
2446 host_os=$target_os_default
2447
2448 # configurable options
2449 enable $PROGRAM_LIST
2450 enable $DOCUMENT_LIST
2451 enable $EXAMPLE_LIST
2452 enable $(filter_out avresample $LIBRARY_LIST)
2453 enable stripping
2454
2455 enable asm
2456 enable debug
2457 enable doc
2458 enable optimizations
2459 enable runtime_cpudetect
2460 enable safe_bitstream_reader
2461 enable static
2462 enable swscale_alpha
2463
2464 # Enable hwaccels by default.
2465 enable dxva2 vaapi vdpau xvmc
2466
2467 # build settings
2468 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2469 LIBPREF="lib"
2470 LIBSUF=".a"
2471 FULLNAME='$(NAME)$(BUILDSUF)'
2472 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2473 SLIBPREF="lib"
2474 SLIBSUF=".so"
2475 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2476 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2477 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2478 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2479 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2480 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2481
2482 asflags_filter=echo
2483 cflags_filter=echo
2484 ldflags_filter=echo
2485
2486 AS_C='-c'
2487 AS_O='-o $@'
2488 CC_C='-c'
2489 CC_E='-E -o $@'
2490 CC_O='-o $@'
2491 CXX_C='-c'
2492 CXX_O='-o $@'
2493 LD_O='-o $@'
2494 LD_LIB='-l%'
2495 LD_PATH='-L'
2496 HOSTCC_C='-c'
2497 HOSTCC_E='-E -o $@'
2498 HOSTCC_O='-o $@'
2499 HOSTLD_O='-o $@'
2500
2501 host_cflags='-O3'
2502 host_cppflags='-D_ISOC99_SOURCE'
2503 host_libs='-lm'
2504 host_cflags_filter=echo
2505 host_ldflags_filter=echo
2506
2507 target_path='$(CURDIR)'
2508
2509 # since the object filename is not given with the -MM flag, the compiler
2510 # is only able to print the basename, and we must add the path ourselves
2511 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2512 DEPFLAGS='-MM'
2513
2514 # find source path
2515 if test -f configure; then
2516     source_path=.
2517 else
2518     source_path=$(cd $(dirname "$0"); pwd)
2519     echo "$source_path" | grep -q '[[:blank:]]' &&
2520         die "Out of tree builds are impossible with whitespace in source path."
2521     test -e "$source_path/config.h" &&
2522         die "Out of tree builds are impossible with config.h in source dir."
2523 fi
2524
2525 for v in "$@"; do
2526     r=${v#*=}
2527     l=${v%"$r"}
2528     r=$(sh_quote "$r")
2529     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2530 done
2531
2532 find_things(){
2533     thing=$1
2534     pattern=$2
2535     file=$source_path/$3
2536     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2537 }
2538
2539 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2540 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2541 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2542 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2543 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2544 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2545 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2546 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2547 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2548 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2549 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2550
2551 ALL_COMPONENTS="
2552     $BSF_LIST
2553     $DECODER_LIST
2554     $DEMUXER_LIST
2555     $ENCODER_LIST
2556     $FILTER_LIST
2557     $HWACCEL_LIST
2558     $INDEV_LIST
2559     $MUXER_LIST
2560     $OUTDEV_LIST
2561     $PARSER_LIST
2562     $PROTOCOL_LIST
2563 "
2564
2565 for n in $COMPONENT_LIST; do
2566     v=$(toupper ${n%s})_LIST
2567     eval enable \$$v
2568     eval ${n}_if_any="\$$v"
2569 done
2570
2571 enable $ARCH_EXT_LIST
2572
2573 die_unknown(){
2574     echo "Unknown option \"$1\"."
2575     echo "See $0 --help for available options."
2576     exit 1
2577 }
2578
2579 print_3_columns() {
2580     cat | tr ' ' '\n' | sort | pr -r -3 -t
2581 }
2582
2583 show_list() {
2584     suffix=_$1
2585     shift
2586     echo $* | sed s/$suffix//g | print_3_columns
2587     exit 0
2588 }
2589
2590 rand_list(){
2591     IFS=', '
2592     set -- $*
2593     unset IFS
2594     for thing; do
2595         comp=${thing%:*}
2596         prob=${thing#$comp}
2597         prob=${prob#:}
2598         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2599         echo "prob ${prob:-0.5}"
2600         printf '%s\n' $comp
2601     done
2602 }
2603
2604 do_random(){
2605     action=$1
2606     shift
2607     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2608     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2609 }
2610
2611 for opt do
2612     optval="${opt#*=}"
2613     case "$opt" in
2614         --extra-ldflags=*)
2615             add_ldflags $optval
2616         ;;
2617         --extra-libs=*)
2618             add_extralibs $optval
2619         ;;
2620         --disable-devices)
2621             disable $INDEV_LIST $OUTDEV_LIST
2622         ;;
2623         --enable-debug=*)
2624             debuglevel="$optval"
2625         ;;
2626         --disable-programs)
2627             disable $PROGRAM_LIST
2628         ;;
2629         --disable-everything)
2630             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2631         ;;
2632         --disable-all)
2633             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2634             disable $LIBRARY_LIST $PROGRAM_LIST doc
2635         ;;
2636         --enable-random|--disable-random)
2637             action=${opt%%-random}
2638             do_random ${action#--} $COMPONENT_LIST
2639         ;;
2640         --enable-random=*|--disable-random=*)
2641             action=${opt%%-random=*}
2642             do_random ${action#--} $optval
2643         ;;
2644         --enable-*=*|--disable-*=*)
2645             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2646             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2647             eval list=\$$(toupper $thing)_LIST
2648             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2649             list=$(filter "$name" $list)
2650             [ "$list" = "" ] && warn "Option $opt did not match anything"
2651             $action $list
2652         ;;
2653         --enable-?*|--disable-?*)
2654             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2655             if is_in $option $COMPONENT_LIST; then
2656                 test $action = disable && action=unset
2657                 eval $action \$$(toupper ${option%s})_LIST
2658             elif is_in $option $CMDLINE_SELECT; then
2659                 $action $option
2660             else
2661                 die_unknown $opt
2662             fi
2663         ;;
2664         --list-*)
2665             NAME="${opt#--list-}"
2666             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2667             NAME=${NAME%s}
2668             eval show_list $NAME \$$(toupper $NAME)_LIST
2669         ;;
2670         --help|-h) show_help
2671         ;;
2672         --fatal-warnings) enable fatal_warnings
2673         ;;
2674         *)
2675             optname="${opt%%=*}"
2676             optname="${optname#--}"
2677             optname=$(echo "$optname" | sed 's/-/_/g')
2678             if is_in $optname $CMDLINE_SET; then
2679                 eval $optname='$optval'
2680             elif is_in $optname $CMDLINE_APPEND; then
2681                 append $optname "$optval"
2682             else
2683                 die_unknown $opt
2684             fi
2685         ;;
2686     esac
2687 done
2688
2689 disabled logging && logfile=/dev/null
2690
2691 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2692 set >> $logfile
2693
2694 test -n "$cross_prefix" && enable cross_compile
2695
2696 if enabled cross_compile; then
2697     test -n "$arch" && test -n "$target_os" ||
2698         die "Must specify target arch and OS when cross-compiling"
2699 fi
2700
2701 ar_default="${cross_prefix}${ar_default}"
2702 cc_default="${cross_prefix}${cc_default}"
2703 cxx_default="${cross_prefix}${cxx_default}"
2704 nm_default="${cross_prefix}${nm_default}"
2705 pkg_config_default="${cross_prefix}${pkg_config_default}"
2706 ranlib="${cross_prefix}${ranlib}"
2707 strip_default="${cross_prefix}${strip_default}"
2708 windres_default="${cross_prefix}${windres_default}"
2709
2710 sysinclude_default="${sysroot}/usr/include"
2711
2712 test -n "$valgrind" && toolchain="valgrind-memcheck"
2713
2714 case "$toolchain" in
2715     clang-asan)
2716         cc_default="clang"
2717         add_cflags  -fsanitize=address
2718         add_ldflags -fsanitize=address
2719     ;;
2720     clang-tsan)
2721         cc_default="clang"
2722         add_cflags  -fsanitize=thread -pie
2723         add_ldflags -fsanitize=thread -pie
2724     ;;
2725     gcc-asan)
2726         cc_default="gcc"
2727         add_cflags  -fsanitize=address
2728         add_ldflags -fsanitize=address
2729     ;;
2730     gcc-tsan)
2731         cc_default="gcc"
2732         add_cflags  -fsanitize=thread -pie -fPIC
2733         add_ldflags -fsanitize=thread -pie -fPIC
2734     ;;
2735     valgrind-massif)
2736         target_exec_default=${valgrind:-"valgrind"}
2737         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"
2738     ;;
2739     valgrind-memcheck)
2740         target_exec_default=${valgrind:-"valgrind"}
2741         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2742     ;;
2743     msvc)
2744         # Check whether the current MSVC version needs the C99 converter.
2745         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2746         # support enough of C99 to build ffmpeg. Default to the new
2747         # behaviour if the regexp was unable to match anything, since this
2748         # successfully parses the version number of existing supported
2749         # versions that require the converter (MSVC 2010 and 2012).
2750         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2751         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2752             cc_default="cl"
2753         else
2754             cc_default="c99wrap cl"
2755         fi
2756         ld_default="link"
2757         nm_default="dumpbin -symbols"
2758         ar_default="lib"
2759         target_os_default="win32"
2760         # Use a relative path for TMPDIR. This makes sure all the
2761         # ffconf temp files are written with a relative path, avoiding
2762         # issues with msys/win32 path conversion for MSVC parameters
2763         # such as -Fo<file> or -out:<file>.
2764         TMPDIR=.
2765     ;;
2766     icl)
2767         cc_default="icl"
2768         ld_default="xilink"
2769         nm_default="dumpbin -symbols"
2770         ar_default="xilib"
2771         target_os_default="win32"
2772         TMPDIR=.
2773     ;;
2774     gcov)
2775         add_cflags  -fprofile-arcs -ftest-coverage
2776         add_ldflags -fprofile-arcs -ftest-coverage
2777     ;;
2778     hardened)
2779         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2780         add_ldflags -Wl,-z,relro -Wl,-z,now
2781     ;;
2782     ?*)
2783         die "Unknown toolchain $toolchain"
2784     ;;
2785 esac
2786
2787 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2788 enabled cross_compile || host_cc_default=$cc
2789 set_default host_cc
2790
2791 if ! $pkg_config --version >/dev/null 2>&1; then
2792     warn "$pkg_config not found, library detection may fail."
2793     pkg_config=false
2794 fi
2795
2796 exesuf() {
2797     case $1 in
2798         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2799     esac
2800 }
2801
2802 EXESUF=$(exesuf $target_os)
2803 HOSTEXESUF=$(exesuf $host_os)
2804
2805 # set temporary file name
2806 : ${TMPDIR:=$TEMPDIR}
2807 : ${TMPDIR:=$TMP}
2808 : ${TMPDIR:=/tmp}
2809
2810 if [ -n "$tempprefix" ] ; then
2811     mktemp(){
2812         echo $tempprefix.${HOSTNAME}.${UID}
2813     }
2814 elif ! check_cmd mktemp -u XXXXXX; then
2815     # simple replacement for missing mktemp
2816     # NOT SAFE FOR GENERAL USE
2817     mktemp(){
2818         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2819     }
2820 fi
2821
2822 tmpfile(){
2823     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2824         (set -C; exec > $tmp) 2>/dev/null ||
2825         die "Unable to create temporary file in $TMPDIR."
2826     append TMPFILES $tmp
2827     eval $1=$tmp
2828 }
2829
2830 trap 'rm -f -- $TMPFILES' EXIT
2831
2832 tmpfile TMPASM .asm
2833 tmpfile TMPC   .c
2834 tmpfile TMPCPP .cpp
2835 tmpfile TMPE   $EXESUF
2836 tmpfile TMPH   .h
2837 tmpfile TMPO   .o
2838 tmpfile TMPS   .S
2839 tmpfile TMPSH  .sh
2840 tmpfile TMPV   .ver
2841
2842 unset -f mktemp
2843
2844 chmod +x $TMPE
2845
2846 # make sure we can execute files in $TMPDIR
2847 cat > $TMPSH 2>> $logfile <<EOF
2848 #! /bin/sh
2849 EOF
2850 chmod +x $TMPSH >> $logfile 2>&1
2851 if ! $TMPSH >> $logfile 2>&1; then
2852     cat <<EOF
2853 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2854 variable to another directory and make sure that it is not mounted noexec.
2855 EOF
2856     die "Sanity test failed."
2857 fi
2858
2859 ccc_flags(){
2860     for flag; do
2861         case $flag in
2862             -std=c99)           echo -c99                       ;;
2863             -mcpu=*)            echo -arch ${flag#*=}           ;;
2864             -mieee)             echo -ieee                      ;;
2865             -O*|-fast)          echo $flag                      ;;
2866             -fno-math-errno)    echo -assume nomath_errno       ;;
2867             -g)                 echo -g3                        ;;
2868             -Wall)              echo -msg_enable level2         ;;
2869             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2870             -Wl,*)              echo $flag                      ;;
2871             -f*|-W*)                                            ;;
2872             *)                  echo $flag                      ;;
2873         esac
2874    done
2875 }
2876
2877 cparser_flags(){
2878     for flag; do
2879         case $flag in
2880             -Wno-switch)             echo -Wno-switch-enum ;;
2881             -Wno-format-zero-length) ;;
2882             -Wdisabled-optimization) ;;
2883             -Wno-pointer-sign)       echo -Wno-other ;;
2884             *)                       echo $flag ;;
2885         esac
2886     done
2887 }
2888
2889 msvc_common_flags(){
2890     for flag; do
2891         case $flag in
2892             # In addition to specifying certain flags under the compiler
2893             # specific filters, they must be specified here as well or else the
2894             # generic catch all at the bottom will print the original flag.
2895             -Wall)                ;;
2896             -std=c99)             ;;
2897             # Common flags
2898             -fomit-frame-pointer) ;;
2899             -g)                   echo -Z7 ;;
2900             -fno-math-errno)      ;;
2901             -fno-common)          ;;
2902             -fno-signed-zeros)    ;;
2903             -fPIC)                ;;
2904             -mthumb)              ;;
2905             -march=*)             ;;
2906             -lz)                  echo zlib.lib ;;
2907             -lavifil32)           echo vfw32.lib ;;
2908             -lavicap32)           echo vfw32.lib user32.lib ;;
2909             -l*)                  echo ${flag#-l}.lib ;;
2910             *)                    echo $flag ;;
2911         esac
2912     done
2913 }
2914
2915 msvc_flags(){
2916     msvc_common_flags "$@"
2917     for flag; do
2918         case $flag in
2919             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2920                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2921                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2922                                        -wd4554 \
2923                                        -wd4273 ;;
2924         esac
2925     done
2926 }
2927
2928 icl_flags(){
2929     msvc_common_flags "$@"
2930     for flag; do
2931         case $flag in
2932             # Despite what Intel's documentation says -Wall, which is supported
2933             # on Windows, does enable remarks so disable them here.
2934             -Wall)                echo $flag -Qdiag-disable:remark ;;
2935             -std=c99)             echo -Qstd=c99 ;;
2936         esac
2937     done
2938 }
2939
2940 pgi_flags(){
2941     for flag; do
2942         case $flag in
2943             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2944             -fomit-frame-pointer) echo -Mnoframe ;;
2945             -g)                   echo -gopt ;;
2946             *)                    echo $flag ;;
2947         esac
2948     done
2949 }
2950
2951 suncc_flags(){
2952     for flag; do
2953         case $flag in
2954             -march=*|-mcpu=*)
2955                 case "${flag#*=}" in
2956                     native)                   echo -xtarget=native       ;;
2957                     v9|niagara)               echo -xarch=sparc          ;;
2958                     ultrasparc)               echo -xarch=sparcvis       ;;
2959                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2960                     i586|pentium)             echo -xchip=pentium        ;;
2961                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2962                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2963                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2964                     pentium4*)          echo -xtarget=pentium4           ;;
2965                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2966                     *-sse3)             echo -xarch=sse3                 ;;
2967                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2968                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2969                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2970                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2971                     bdver*)                    echo -xarch=avx           ;;
2972                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2973                     k8|opteron|athlon64|athlon-fx)
2974                                                echo -xarch=sse2a         ;;
2975                     athlon*)                   echo -xarch=pentium_proa  ;;
2976                 esac
2977                 ;;
2978             -std=c99)             echo -xc99              ;;
2979             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2980             -fPIC)                echo -KPIC -xcode=pic32 ;;
2981             -W*,*)                echo $flag              ;;
2982             -f*-*|-W*|-mimpure-text)                      ;;
2983             -shared)              echo -G                 ;;
2984             *)                    echo $flag              ;;
2985         esac
2986     done
2987 }
2988
2989 tms470_flags(){
2990     for flag; do
2991         case $flag in
2992             -march=*|-mcpu=*)
2993                 case "${flag#*=}" in
2994                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2995                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2996                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2997                     armv6*|arm11*)          echo -mv=6   ;;
2998                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2999                                             echo -mv=5e  ;;
3000                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3001                 esac
3002                 ;;
3003             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3004             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3005             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3006             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3007             -msoft-float)   echo --float_support=vfplib       ;;
3008             -O[0-3]|-mf=*)  echo $flag                        ;;
3009             -g)             echo -g -mn                       ;;
3010             -pds=*)         echo $flag                        ;;
3011             -D*|-I*)        echo $flag                        ;;
3012             --gcc|--abi=*)  echo $flag                        ;;
3013             -me)            echo $flag                        ;;
3014         esac
3015     done
3016 }
3017
3018 probe_cc(){
3019     pfx=$1
3020     _cc=$2
3021
3022     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3023     unset _ld_o _ldflags _ld_lib _ld_path
3024     unset _depflags _DEPCMD _DEPFLAGS
3025     _flags_filter=echo
3026
3027     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3028         true # no-op to avoid reading stdin in following checks
3029     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3030         _type=llvm_gcc
3031         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3032         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3033         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3034         _cflags_speed='-O3'
3035         _cflags_size='-Os'
3036     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3037         _type=gcc
3038         gcc_version=$($_cc --version | head -n1)
3039         gcc_basever=$($_cc -dumpversion)
3040         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3041         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3042         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3043         if ! $_cc -dumpversion | grep -q '^2\.'; then
3044             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3045         fi
3046         _cflags_speed='-O3'
3047         _cflags_size='-Os'
3048     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3049         _type=icc
3050         _ident=$($_cc --version | head -n1)
3051         _depflags='-MMD'
3052         _cflags_speed='-O3'
3053         _cflags_size='-Os'
3054         _cflags_noopt='-O1'
3055     elif $_cc -v 2>&1 | grep -q xlc; then
3056         _type=xlc
3057         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3058         _cflags_speed='-O5'
3059         _cflags_size='-O5 -qcompact'
3060     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3061         _type=ccc
3062         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3063         _DEPFLAGS='-M'
3064         _cflags_speed='-fast'
3065         _cflags_size='-O1'
3066         _flags_filter=ccc_flags
3067     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3068         test -d "$sysroot" || die "No valid sysroot specified."
3069         _type=armcc
3070         _ident=$($_cc --vsn | head -n1)
3071         armcc_conf="$PWD/armcc.conf"
3072         $_cc --arm_linux_configure                 \
3073              --arm_linux_config_file="$armcc_conf" \
3074              --configure_sysroot="$sysroot"        \
3075              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3076              die "Error creating armcc configuration file."
3077         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3078         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3079         as_default="${cross_prefix}gcc"
3080         _depflags='-MMD'
3081         _cflags_speed='-O3'
3082         _cflags_size='-Os'
3083     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3084         _type=tms470
3085         _ident=$($_cc -version | head -n1 | tr -s ' ')
3086         _flags='--gcc --abi=eabi -me'
3087         _cc_e='-ppl -fe=$@'
3088         _cc_o='-fe=$@'
3089         _depflags='-ppa -ppd=$(@:.o=.d)'
3090         _cflags_speed='-O3 -mf=5'
3091         _cflags_size='-O3 -mf=2'
3092         _flags_filter=tms470_flags
3093     elif $_cc -v 2>&1 | grep -q clang; then
3094         _type=clang
3095         _ident=$($_cc --version | head -n1)
3096         _depflags='-MMD'
3097         _cflags_speed='-O3'
3098         _cflags_size='-Os'
3099     elif $_cc -V 2>&1 | grep -q Sun; then
3100         _type=suncc
3101         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3102         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3103         _DEPFLAGS='-xM1 -xc99'
3104         _ldflags='-std=c99'
3105         _cflags_speed='-O5'
3106         _cflags_size='-O5 -xspace'
3107         _flags_filter=suncc_flags
3108     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3109         _type=pathscale
3110         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3111         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3112         _cflags_speed='-O2'
3113         _cflags_size='-Os'
3114         _flags_filter='filter_out -Wdisabled-optimization'
3115     elif $_cc -v 2>&1 | grep -q Open64; then
3116         _type=open64
3117         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3118         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3119         _cflags_speed='-O2'
3120         _cflags_size='-Os'
3121         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3122     elif $_cc -V 2>&1 | grep -q Portland; then
3123         _type=pgi
3124         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3125         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3126         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3127         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3128         _cflags_noopt="-O"
3129         _flags_filter=pgi_flags
3130     elif $_cc 2>&1 | grep -q Microsoft; then
3131         _type=msvc
3132         _ident=$($cc 2>&1 | head -n1)
3133         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3134         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3135         _cflags_speed="-O2"
3136         _cflags_size="-O1"
3137         if $_cc 2>&1 | grep -q Linker; then
3138             _ld_o='-out:$@'
3139         else
3140             _ld_o='-Fe$@'
3141         fi
3142         _cc_o='-Fo$@'
3143         _cc_e='-P -Fi$@'
3144         _flags_filter=msvc_flags
3145         _ld_lib='lib%.a'
3146         _ld_path='-libpath:'
3147         _flags='-nologo'
3148         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3149         if [ $pfx = hostcc ]; then
3150             append _cflags -Dsnprintf=_snprintf
3151         fi
3152         disable stripping
3153     elif $_cc 2>&1 | grep -q Intel; then
3154         _type=icl
3155         _ident=$($cc 2>&1 | head -n1)
3156         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3157         # Not only is O3 broken on 13.x+ but it is slower on all previous
3158         # versions (tested) as well.
3159         _cflags_speed="-O2"
3160         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3161         if $_cc 2>&1 | grep -q Linker; then
3162             _ld_o='-out:$@'
3163         else
3164             _ld_o='-Fe$@'
3165         fi
3166         _cc_o='-Fo$@'
3167         _cc_e='-P'
3168         _flags_filter=icl_flags
3169         _ld_lib='lib%.a'
3170         _ld_path='-libpath:'
3171         # -Qdiag-error to make icl error when seeing certain unknown arguments
3172         _flags='-nologo -Qdiag-error:4044,10157'
3173         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3174         # with MSVC which enables it by default.
3175         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3176         if [ $pfx = hostcc ]; then
3177             append _cflags -Dsnprintf=_snprintf
3178         fi
3179     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3180         _type=cparser
3181         _ident=$($_cc --version | head -n1)
3182         _depflags='-MMD'
3183         _cflags_speed='-O4'
3184         _cflags_size='-O2'
3185         _flags_filter=cparser_flags
3186     fi
3187
3188     eval ${pfx}_type=\$_type
3189     eval ${pfx}_ident=\$_ident
3190 }
3191
3192 set_ccvars(){
3193     eval ${1}_C=\${_cc_c-\${${1}_C}}
3194     eval ${1}_E=\${_cc_e-\${${1}_E}}
3195     eval ${1}_O=\${_cc_o-\${${1}_O}}
3196
3197     if [ -n "$_depflags" ]; then
3198         eval ${1}_DEPFLAGS=\$_depflags
3199     else
3200         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3201         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3202         eval DEP${1}FLAGS=\$_flags
3203     fi
3204 }
3205
3206 probe_cc cc "$cc"
3207 cflags_filter=$_flags_filter
3208 cflags_speed=$_cflags_speed
3209 cflags_size=$_cflags_size
3210 cflags_noopt=$_cflags_noopt
3211 add_cflags $_flags $_cflags
3212 cc_ldflags=$_ldflags
3213 set_ccvars CC
3214
3215 probe_cc hostcc "$host_cc"
3216 host_cflags_filter=$_flags_filter
3217 add_host_cflags  $_flags $_cflags
3218 set_ccvars HOSTCC
3219
3220 test -n "$cc_type" && enable $cc_type ||
3221     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3222
3223 : ${as_default:=$cc}
3224 : ${dep_cc_default:=$cc}
3225 : ${ld_default:=$cc}
3226 : ${host_ld_default:=$host_cc}
3227 set_default ar as dep_cc ld host_ld windres
3228
3229 probe_cc as "$as"
3230 asflags_filter=$_flags_filter
3231 add_asflags $_flags $_cflags
3232 set_ccvars AS
3233
3234 probe_cc ld "$ld"
3235 ldflags_filter=$_flags_filter
3236 add_ldflags $_flags $_ldflags
3237 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3238 LD_O=${_ld_o-$LD_O}
3239 LD_LIB=${_ld_lib-$LD_LIB}
3240 LD_PATH=${_ld_path-$LD_PATH}
3241
3242 probe_cc hostld "$host_ld"
3243 host_ldflags_filter=$_flags_filter
3244 add_host_ldflags $_flags $_ldflags
3245 HOSTLD_O=${_ld_o-$HOSTLD_O}
3246
3247 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3248     probe_cc depcc "$dep_cc"
3249     CCDEP=${_DEPCMD:-$DEPCMD}
3250     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3251     DEPCCFLAGS=$_flags
3252 fi
3253
3254 if $ar 2>&1 | grep -q Microsoft; then
3255     arflags="-nologo"
3256     ar_o='-out:$@'
3257 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3258     arflags="rq"
3259     ar_o='$@'
3260 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3261     arflags='-Xany -r -c'
3262     ar_o='$@'
3263 else
3264     arflags="rc"
3265     ar_o='$@'
3266 fi
3267
3268 add_cflags $extra_cflags
3269 add_cxxflags $extra_cxxflags
3270 add_asflags $extra_cflags
3271
3272 if test -n "$sysroot"; then
3273     case "$cc_type" in
3274         gcc|llvm_gcc|clang)
3275             add_cppflags --sysroot="$sysroot"
3276             add_ldflags --sysroot="$sysroot"
3277         ;;
3278         tms470)
3279             add_cppflags -I"$sysinclude"
3280             add_ldflags  --sysroot="$sysroot"
3281         ;;
3282     esac
3283 fi
3284
3285 if test "$cpu" = host; then
3286     enabled cross_compile &&
3287         die "--cpu=host makes no sense when cross-compiling."
3288
3289     case "$cc_type" in
3290         gcc|llvm_gcc)
3291             check_native(){
3292                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3293                 sed -n "/cc1.*$1=/{
3294                             s/.*$1=\\([^ ]*\\).*/\\1/
3295                             p
3296                             q
3297                         }" $TMPE
3298             }
3299             cpu=$(check_native -march || check_native -mcpu)
3300         ;;
3301     esac
3302
3303     test "${cpu:-host}" = host &&
3304         die "--cpu=host not supported with compiler $cc"
3305 fi
3306
3307 # Deal with common $arch aliases
3308 case "$arch" in
3309     aarch64|arm64)
3310         arch="aarch64"
3311     ;;
3312     arm*|iPad*|iPhone*)
3313         arch="arm"
3314     ;;
3315     mips*|IP*)
3316         arch="mips"
3317     ;;
3318     parisc*|hppa*)
3319         arch="parisc"
3320     ;;
3321     "Power Macintosh"|ppc*|powerpc*)
3322         arch="ppc"
3323     ;;
3324     s390|s390x)
3325         arch="s390"
3326     ;;
3327     sh4|sh)
3328         arch="sh4"
3329     ;;
3330     sun4u|sparc*)
3331         arch="sparc"
3332     ;;
3333     tilegx|tile-gx)
3334         arch="tilegx"
3335     ;;
3336     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3337         arch="x86"
3338     ;;
3339 esac
3340
3341 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3342 enable $arch
3343
3344 # Add processor-specific flags
3345 if enabled aarch64; then
3346
3347     case $cpu in
3348         armv*)
3349             cpuflags="-march=$cpu"
3350         ;;
3351         *)
3352             cpuflags="-mcpu=$cpu"
3353         ;;
3354     esac
3355
3356 elif enabled alpha; then
3357
3358     cpuflags="-mcpu=$cpu"
3359
3360 elif enabled arm; then
3361
3362     check_arm_arch() {
3363         check_cpp_condition stddef.h \
3364             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3365             $cpuflags
3366     }
3367
3368     probe_arm_arch() {
3369         if   check_arm_arch 4;        then echo armv4;
3370         elif check_arm_arch 4T;       then echo armv4t;
3371         elif check_arm_arch 5;        then echo armv5;
3372         elif check_arm_arch 5E;       then echo armv5e;
3373         elif check_arm_arch 5T;       then echo armv5t;
3374         elif check_arm_arch 5TE;      then echo armv5te;
3375         elif check_arm_arch 5TEJ;     then echo armv5te;
3376         elif check_arm_arch 6;        then echo armv6;
3377         elif check_arm_arch 6J;       then echo armv6j;
3378         elif check_arm_arch 6K;       then echo armv6k;
3379         elif check_arm_arch 6Z;       then echo armv6z;
3380         elif check_arm_arch 6ZK;      then echo armv6zk;
3381         elif check_arm_arch 6T2;      then echo armv6t2;
3382         elif check_arm_arch 7;        then echo armv7;
3383         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3384         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3385         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3386         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3387         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3388         fi
3389     }
3390
3391     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3392
3393     case $cpu in
3394         armv*)
3395             cpuflags="-march=$cpu"
3396             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3397         ;;
3398         *)
3399             cpuflags="-mcpu=$cpu"
3400             case $cpu in
3401                 cortex-a*)                               subarch=armv7a  ;;
3402                 cortex-r*)                               subarch=armv7r  ;;
3403                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3404                 arm11*)                                  subarch=armv6   ;;
3405                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3406                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3407                 *)                             subarch=$(probe_arm_arch) ;;
3408             esac
3409         ;;
3410     esac
3411
3412     case "$subarch" in
3413         armv5t*)    enable fast_clz                ;;
3414         armv[6-8]*) enable fast_clz fast_unaligned ;;
3415     esac
3416
3417 elif enabled avr32; then
3418
3419     case $cpu in
3420         ap7[02]0[0-2])
3421             subarch="avr32_ap"
3422             cpuflags="-mpart=$cpu"
3423         ;;
3424         ap)
3425             subarch="avr32_ap"
3426             cpuflags="-march=$cpu"
3427         ;;
3428         uc3[ab]*)
3429             subarch="avr32_uc"
3430             cpuflags="-mcpu=$cpu"
3431         ;;
3432         uc)
3433             subarch="avr32_uc"
3434             cpuflags="-march=$cpu"
3435         ;;
3436     esac
3437
3438 elif enabled bfin; then
3439
3440     cpuflags="-mcpu=$cpu"
3441
3442 elif enabled mips; then
3443
3444     cpuflags="-march=$cpu"
3445
3446     case $cpu in
3447         24kc)
3448             disable mipsfpu
3449             disable mipsdspr1
3450             disable mipsdspr2
3451         ;;
3452         24kf*)
3453             disable mipsdspr1
3454             disable mipsdspr2
3455         ;;
3456         24kec|34kc|1004kc)
3457             disable mipsfpu
3458             disable mipsdspr2
3459         ;;
3460         24kef*|34kf*|1004kf*)
3461             disable mipsdspr2
3462         ;;
3463         74kc)
3464             disable mipsfpu
3465         ;;
3466     esac
3467
3468 elif enabled ppc; then
3469
3470     case $(tolower $cpu) in
3471         601|ppc601|powerpc601)
3472             cpuflags="-mcpu=601"
3473             disable altivec
3474         ;;
3475         603*|ppc603*|powerpc603*)
3476             cpuflags="-mcpu=603"
3477             disable altivec
3478         ;;
3479         604*|ppc604*|powerpc604*)
3480             cpuflags="-mcpu=604"
3481             disable altivec
3482         ;;
3483         g3|75*|ppc75*|powerpc75*)
3484             cpuflags="-mcpu=750"
3485             disable altivec
3486         ;;
3487         g4|745*|ppc745*|powerpc745*)
3488             cpuflags="-mcpu=7450"
3489         ;;
3490         74*|ppc74*|powerpc74*)
3491             cpuflags="-mcpu=7400"
3492         ;;
3493         g5|970|ppc970|powerpc970)
3494             cpuflags="-mcpu=970"
3495         ;;
3496         power[3-7]*)
3497             cpuflags="-mcpu=$cpu"
3498         ;;
3499         cell)
3500             cpuflags="-mcpu=cell"
3501             enable ldbrx
3502         ;;
3503         e500mc)
3504             cpuflags="-mcpu=e500mc"
3505             disable altivec
3506         ;;
3507         e500v2)
3508             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3509             disable altivec
3510         ;;
3511         e500)
3512             cpuflags="-mcpu=8540 -mhard-float"
3513             disable altivec
3514         ;;
3515     esac
3516
3517 elif enabled sparc; then
3518
3519     case $cpu in
3520         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3521             cpuflags="-mcpu=$cpu"
3522             disable vis
3523         ;;
3524         ultrasparc*|niagara[234])
3525             cpuflags="-mcpu=$cpu"
3526         ;;
3527     esac
3528
3529 elif enabled x86; then
3530
3531     case $cpu in
3532         i[345]86|pentium)
3533             cpuflags="-march=$cpu"
3534             disable mmx
3535         ;;
3536         # targets that do NOT support nopl and conditional mov (cmov)
3537         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3538             cpuflags="-march=$cpu"
3539             disable i686
3540         ;;
3541         # targets that do support nopl and conditional mov (cmov)
3542         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3543             cpuflags="-march=$cpu"
3544             enable i686
3545             enable fast_cmov
3546         ;;
3547         # targets that do support conditional mov but on which it's slow
3548         pentium4|pentium4m|prescott|nocona)
3549             cpuflags="-march=$cpu"
3550             enable i686
3551             disable fast_cmov
3552         ;;
3553     esac
3554
3555 fi
3556
3557 if [ "$cpu" != generic ]; then
3558     add_cflags  $cpuflags
3559     add_asflags $cpuflags
3560 fi
3561
3562 # compiler sanity check
3563 check_exec <<EOF
3564 int main(void){ return 0; }
3565 EOF
3566 if test "$?" != 0; then
3567     echo "$cc is unable to create an executable file."
3568     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3569         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3570         echo "Only do this if you know what cross compiling means."
3571     fi
3572     die "C compiler test failed."
3573 fi
3574
3575 add_cppflags -D_ISOC99_SOURCE
3576 add_cxxflags -D__STDC_CONSTANT_MACROS
3577 check_cflags -std=c99
3578 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3579 #include <stdlib.h>
3580 EOF
3581 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3582 #include <stdlib.h>
3583 EOF
3584
3585 check_host_cflags -std=c99
3586 check_host_cflags -Wall
3587
3588 check_64bit(){
3589     arch32=$1
3590     arch64=$2
3591     expr=$3
3592     check_code cc "" "int test[2*($expr) - 1]" &&
3593         subarch=$arch64 || subarch=$arch32
3594 }
3595
3596 case "$arch" in
3597     aarch64|alpha|ia64)
3598         spic=$shared
3599     ;;
3600     mips)
3601         check_64bit mips mips64 '_MIPS_SIM > 1'
3602         spic=$shared
3603     ;;
3604     parisc)
3605         check_64bit parisc parisc64 'sizeof(void *) > 4'
3606         spic=$shared
3607     ;;
3608     ppc)
3609         check_64bit ppc ppc64 'sizeof(void *) > 4'
3610         spic=$shared
3611     ;;
3612     sparc)
3613         check_64bit sparc sparc64 'sizeof(void *) > 4'
3614         spic=$shared
3615     ;;
3616     x86)
3617         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3618         if test "$subarch" = "x86_64"; then
3619             spic=$shared
3620         fi
3621     ;;
3622     ppc)
3623         check_cc <<EOF && subarch="ppc64"
3624         int test[(int)sizeof(char*) - 7];
3625 EOF
3626     ;;
3627 esac
3628
3629 enable $subarch
3630 enabled spic && enable_weak pic
3631
3632 # OS specific
3633 case $target_os in
3634     aix)
3635         SHFLAGS=-shared
3636         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3637         enabled shared && add_ldflags -Wl,-brtl
3638         ;;
3639     haiku)
3640         prefix_default="/boot/common"
3641         network_extralibs="-lnetwork"
3642         host_libs=
3643         ;;
3644     sunos)
3645         SHFLAGS='-shared -Wl,-h,$$(@F)'
3646         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3647         network_extralibs="-lsocket -lnsl"
3648         # When using suncc to build, the Solaris linker will mark
3649         # an executable with each instruction set encountered by
3650         # the Solaris assembler.  As our libraries contain their own
3651         # guards for processor-specific code, instead suppress
3652         # generation of the HWCAPS ELF section on Solaris x86 only.
3653         enabled_all suncc x86 &&
3654             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3655             add_ldflags -Wl,-M,mapfile
3656         nm_default='nm -P -g'
3657         ;;
3658     netbsd)
3659         disable symver
3660         oss_indev_extralibs="-lossaudio"
3661         oss_outdev_extralibs="-lossaudio"
3662         enabled gcc || check_ldflags -Wl,-zmuldefs
3663         ;;
3664     openbsd|bitrig)
3665         disable symver
3666         SHFLAGS='-shared'
3667         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3668         SLIB_INSTALL_LINKS=
3669         oss_indev_extralibs="-lossaudio"
3670         oss_outdev_extralibs="-lossaudio"
3671         ;;
3672     dragonfly)
3673         disable symver
3674         ;;
3675     freebsd)
3676         ;;
3677     bsd/os)
3678         add_extralibs -lpoll -lgnugetopt
3679         strip="strip -d"
3680         ;;
3681     darwin)
3682         gas="gas-preprocessor.pl $cc"
3683         enabled ppc && add_asflags -force_cpusubtype_ALL
3684         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3685         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3686         strip="${strip} -x"
3687         add_ldflags -Wl,-dynamic,-search_paths_first
3688         SLIBSUF=".dylib"
3689         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3690         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3691         objformat="macho"
3692         enabled x86_64 && objformat="macho64"
3693         enabled_any pic shared ||
3694             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3695         ;;
3696     mingw32*)
3697         if test $target_os = "mingw32ce"; then
3698             disable network
3699         else
3700             target_os=mingw32
3701         fi
3702         LIBTARGET=i386
3703         if enabled x86_64; then
3704             LIBTARGET="i386:x86-64"
3705         elif enabled arm; then
3706             LIBTARGET=arm-wince
3707         fi
3708         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3709         check_ldflags -Wl,--nxcompat
3710         check_ldflags -Wl,--dynamicbase
3711         shlibdir_default="$bindir_default"
3712         SLIBPREF=""
3713         SLIBSUF=".dll"
3714         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3715         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3716         dlltool="${cross_prefix}dlltool"
3717         if check_cmd lib.exe -list; then
3718             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3719             if enabled x86_64; then
3720                 LIBTARGET=x64
3721             fi
3722         elif check_cmd $dlltool --version; then
3723             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3724         fi
3725         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3726         SLIB_INSTALL_LINKS=
3727         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3728         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3729         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3730         objformat="win32"
3731         ranlib=:
3732         enable dos_paths
3733         ;;
3734     win32|win64)
3735         disable symver
3736         if enabled shared; then
3737             # Link to the import library instead of the normal static library
3738             # for shared libs.
3739             LD_LIB='%.lib'
3740             # Cannot build both shared and static libs with MSVC or icl.
3741             disable static
3742         fi
3743         shlibdir_default="$bindir_default"
3744         SLIBPREF=""
3745         SLIBSUF=".dll"
3746         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3747         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3748         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3749         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3750         SLIB_INSTALL_LINKS=
3751         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3752         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3753         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3754         objformat="win32"
3755         ranlib=:
3756         enable dos_paths
3757         ;;
3758     cygwin*)
3759         target_os=cygwin
3760         shlibdir_default="$bindir_default"
3761         SLIBPREF="cyg"
3762         SLIBSUF=".dll"
3763         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3764         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3765         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3766         SLIB_INSTALL_LINKS=
3767         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3768         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3769         objformat="win32"
3770         enable dos_paths
3771         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3772         ;;
3773     *-dos|freedos|opendos)
3774         network_extralibs="-lsocket"
3775         objformat="coff"
3776         enable dos_paths
3777         add_cppflags -U__STRICT_ANSI__
3778         ;;
3779     linux)
3780         enable dv1394
3781         ;;
3782     irix*)
3783         target_os=irix
3784         ranlib="echo ignoring ranlib"
3785         ;;
3786     os/2*)
3787         strip="lxlite -CS"
3788         ln_s="cp -f"
3789         objformat="aout"
3790         add_cppflags -D_GNU_SOURCE
3791         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3792         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3793         LIBSUF="_s.a"
3794         SLIBPREF=""
3795         SLIBSUF=".dll"
3796         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3797         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3798         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3799             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3800             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3801             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3802             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3803             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3804         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3805             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3806         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3807         enable dos_paths
3808         enable_weak os2threads
3809         ;;
3810     gnu/kfreebsd)
3811         add_cppflags -D_BSD_SOURCE
3812         ;;
3813     gnu)
3814         ;;
3815     qnx)
3816         add_cppflags -D_QNX_SOURCE
3817         network_extralibs="-lsocket"
3818         ;;
3819     symbian)
3820         SLIBSUF=".dll"
3821         enable dos_paths
3822         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3823         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3824         add_ldflags -Wl,--target1-abs,--no-undefined \
3825                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3826                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3827         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3828                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3829                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3830         ;;
3831     osf1)
3832         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3833         ;;
3834     minix)
3835         ;;
3836     plan9)
3837         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3838                      -D_REENTRANT_SOURCE        \
3839                      -D_RESEARCH_SOURCE         \
3840                      -DFD_SETSIZE=96            \
3841                      -DHAVE_SOCK_OPTS
3842         add_compat strtod.o strtod=avpriv_strtod
3843         network_extralibs='-lbsd'
3844         exeobjs=compat/plan9/main.o
3845         disable ffserver
3846         cp_f='cp'
3847         ;;
3848     none)
3849         ;;
3850     *)
3851         die "Unknown OS '$target_os'."
3852         ;;
3853 esac
3854
3855 # determine libc flavour
3856
3857 probe_libc(){
3858     pfx=$1
3859     pfx_no_=${pfx%_}
3860     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3861     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3862         eval ${pfx}libc_type=uclibc
3863         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3864     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3865         eval ${pfx}libc_type=glibc
3866         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3867     # MinGW headers can be installed on Cygwin, so check for newlib first.
3868     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3869         eval ${pfx}libc_type=newlib
3870         add_${pfx}cppflags -U__STRICT_ANSI__
3871     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3872     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3873         eval ${pfx}libc_type=mingw64
3874         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3875             add_compat msvcrt/snprintf.o
3876             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3877         fi
3878         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3879         eval test \$${pfx_no_}cc_type = "gcc" &&
3880             add_${pfx}cppflags -D__printf__=__gnu_printf__
3881     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3882          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3883         eval ${pfx}libc_type=mingw32
3884         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3885             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3886             die "ERROR: MinGW32 runtime version must be >= 3.15."
3887         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3888         eval test \$${pfx_no_}cc_type = "gcc" &&
3889             add_${pfx}cppflags -D__printf__=__gnu_printf__
3890     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3891         eval ${pfx}libc_type=msvcrt
3892         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3893         # 0x601 by default unless something else is set by the user.
3894         # This can easily lead to us detecting functions only present
3895         # in such new versions and producing binaries requiring windows 7.0.
3896         # Therefore explicitly set the default to XP unless the user has
3897         # set something else on the command line.
3898         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3899             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3900     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3901         eval ${pfx}libc_type=klibc
3902     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3903         eval ${pfx}libc_type=bionic
3904     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3905         eval ${pfx}libc_type=solaris
3906         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3907     fi
3908 }
3909
3910 probe_libc
3911 test -n "$libc_type" && enable libc_$libc_type
3912 probe_libc host_
3913 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3914
3915 case $libc_type in
3916     bionic)
3917         add_compat strtod.o strtod=avpriv_strtod
3918         ;;
3919     msvcrt)
3920         add_compat strtod.o strtod=avpriv_strtod
3921         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3922                                      _snprintf=avpriv_snprintf  \
3923                                      vsnprintf=avpriv_vsnprintf
3924         ;;
3925 esac
3926
3927 # hacks for compiler/libc/os combinations
3928
3929 if enabled_all tms470 libc_glibc; then
3930     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3931     add_cppflags -D__USER_LABEL_PREFIX__=
3932     add_cppflags -D__builtin_memset=memset
3933     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3934     add_cflags   -pds=48    # incompatible redefinition of macro
3935 fi
3936
3937 if enabled_all ccc libc_glibc; then
3938     add_ldflags -Wl,-z,now  # calls to libots crash without this
3939 fi
3940
3941 esc(){
3942     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3943 }
3944
3945 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3946
3947 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3948
3949 set_default $PATHS_LIST
3950 set_default nm
3951
3952 # we need to build at least one lib type
3953 if ! enabled_any static shared; then
3954     cat <<EOF
3955 At least one library type must be built.
3956 Specify --enable-static to build the static libraries or --enable-shared to
3957 build the shared libraries as well. To only build the shared libraries specify
3958 --disable-static in addition to --enable-shared.
3959 EOF
3960     exit 1;
3961 fi
3962
3963 # backward compatibility layer for incompatible_libav/fork_abi
3964 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3965 enabled incompatible_libav_abi && enable incompatible_fork_abi
3966
3967 die_license_disabled() {
3968     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3969 }
3970
3971 die_license_disabled_gpl() {
3972     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3973 }
3974
3975 die_license_disabled gpl frei0r
3976 die_license_disabled gpl libcdio
3977 die_license_disabled gpl libutvideo
3978 die_license_disabled gpl libvidstab
3979 die_license_disabled gpl libx264
3980 die_license_disabled gpl libxavs
3981 die_license_disabled gpl libxvid
3982 die_license_disabled gpl libzvbi
3983 die_license_disabled gpl x11grab
3984
3985 die_license_disabled nonfree libaacplus
3986 die_license_disabled nonfree libfaac
3987 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3988 enabled gpl && die_license_disabled_gpl nonfree openssl
3989
3990 die_license_disabled version3 libopencore_amrnb
3991 die_license_disabled version3 libopencore_amrwb
3992 die_license_disabled version3 libvo_aacenc
3993 die_license_disabled version3 libvo_amrwbenc
3994
3995 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3996
3997 disabled optimizations || check_cflags -fomit-frame-pointer
3998
3999 enable_weak_pic() {
4000     disabled pic && return
4001     enable pic
4002     add_cppflags -DPIC
4003     case "$target_os" in
4004     mingw*|cygwin*)
4005         ;;
4006     *)
4007         add_cflags -fPIC
4008         ;;
4009     esac
4010     add_asflags  -fPIC
4011 }
4012
4013 enabled pic && enable_weak_pic
4014
4015 check_cc <<EOF || die "Symbol mangling check failed."
4016 int ff_extern;
4017 EOF
4018 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4019 extern_prefix=${sym%%ff_extern*}
4020
4021 check_cc <<EOF && enable_weak inline_asm
4022 void foo(void) { __asm__ volatile ("" ::); }
4023 EOF
4024
4025 _restrict=
4026 for restrict_keyword in restrict __restrict__ __restrict; do
4027     check_cc <<EOF && _restrict=$restrict_keyword && break
4028 void foo(char * $restrict_keyword p);
4029 EOF
4030 done
4031
4032 check_cc <<EOF && enable pragma_deprecated
4033 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4034 EOF
4035
4036 check_cc <<EOF && enable attribute_packed
4037 struct { int x; } __attribute__((packed)) x;
4038 EOF
4039
4040 check_cc <<EOF && enable attribute_may_alias
4041 union { int x; } __attribute__((may_alias)) x;
4042 EOF
4043
4044 check_cc <<EOF || die "endian test failed"
4045 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4046 EOF
4047 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4048
4049 check_inline_asm inline_asm_labels '"1:\n"'
4050
4051 if enabled alpha; then
4052
4053     check_cflags -mieee
4054
4055 elif enabled arm; then
4056
4057     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4058 float func(float a, float b){ return a+b; }
4059 EOF
4060
4061     enabled thumb && check_cflags -mthumb || check_cflags -marm
4062     nogas=die
4063
4064     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4065         enable vfp_args
4066     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4067         case "${cross_prefix:-$cc}" in
4068             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4069             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4070 __asm__ (".eabi_attribute 28, 1");
4071 int main(void) { return 0; }
4072 EOF
4073         esac
4074         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4075     fi
4076
4077     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4078     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4079     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4080     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4081     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4082     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4083
4084     [ $target_os = linux ] ||
4085         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4086             $ARCH_EXT_LIST_ARM
4087
4088     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4089     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
4090
4091     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4092
4093 elif enabled mips; then
4094
4095     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4096     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4097      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4098     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4099      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4100     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4101      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4102     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4103      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4104
4105 elif enabled parisc; then
4106
4107     if enabled gcc; then
4108         case $($cc -dumpversion) in
4109             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4110         esac
4111     fi
4112
4113 elif enabled ppc; then
4114
4115     enable local_aligned_8 local_aligned_16
4116
4117     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4118     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4119     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4120     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4121
4122     # AltiVec flags: The FSF version of GCC differs from the Apple version
4123     if enabled altivec; then
4124         if ! enabled_any pic ppc64; then
4125             nogas=warn
4126         fi
4127         check_cflags -maltivec -mabi=altivec &&
4128         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4129         check_cflags -faltivec
4130
4131         # check if our compiler supports Motorola AltiVec C API
4132         check_cc <<EOF || disable altivec
4133 $inc_altivec_h
4134 int main(void) {
4135     vector signed int v1 = (vector signed int) { 0 };
4136     vector signed int v2 = (vector signed int) { 1 };
4137     v1 = vec_add(v1, v2);
4138     return 0;
4139 }
4140 EOF
4141
4142         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4143     fi
4144
4145 elif enabled sparc; then
4146
4147     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4148
4149 elif enabled x86; then
4150
4151     check_builtin rdtsc    intrin.h   "__rdtsc()"
4152     check_builtin mm_empty mmintrin.h "_mm_empty()"
4153
4154     enable local_aligned_8 local_aligned_16
4155
4156     # check whether EBP is available on x86
4157     # As 'i' is stored on the stack, this program will crash
4158     # if the base pointer is used to access it because the
4159     # base pointer is cleared in the inline assembly code.
4160     check_exec_crash <<EOF && enable ebp_available
4161 volatile int i=0;
4162 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4163 return i;
4164 EOF
4165
4166     # check whether EBX is available on x86
4167     check_inline_asm ebx_available '""::"b"(0)' &&
4168         check_inline_asm ebx_available '"":::"%ebx"'
4169
4170     # check whether xmm clobbers are supported
4171     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4172
4173     # check whether binutils is new enough to compile SSSE3/MMXEXT
4174     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4175     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4176
4177     if ! disabled_any asm mmx yasm; then
4178         if check_cmd $yasmexe --version; then
4179             enabled x86_64 && yasm_extra="-m amd64"
4180             yasm_debug="-g dwarf2"
4181         elif check_cmd nasm -v; then
4182             yasmexe=nasm
4183             yasm_debug="-g -F dwarf"
4184             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4185         fi
4186
4187         YASMFLAGS="-f $objformat $yasm_extra"
4188         enabled pic               && append YASMFLAGS "-DPIC"
4189         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4190         case "$objformat" in
4191             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4192         esac
4193
4194         check_yasm "movbe ecx, [5]" && enable yasm ||
4195             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4196         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4197         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4198         check_yasm "CPU amdnop" && enable cpunop
4199     fi
4200
4201     case "$cpu" in
4202         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4203             disable fast_clz
4204         ;;
4205     esac
4206
4207 fi
4208
4209 if enabled asm; then
4210     as=${gas:=$as}
4211     check_as <<EOF && enable gnu_as || \
4212         $nogas "GNU assembler not found, install gas-preprocessor"
4213 .macro m n
4214 \n: .int 0
4215 .endm
4216 m x
4217 EOF
4218 fi
4219
4220 check_ldflags -Wl,--as-needed
4221
4222 if check_func dlopen; then
4223     ldl=
4224 elif check_func dlopen -ldl; then
4225     ldl=-ldl
4226 fi
4227
4228 if ! disabled network; then
4229     check_type "sys/types.h sys/socket.h" socklen_t
4230     check_type netdb.h "struct addrinfo"
4231     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4232     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4233     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4234     check_type netinet/in.h "struct sockaddr_in6"
4235     check_type poll.h "struct pollfd"
4236     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4237     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4238     check_type netinet/sctp.h "struct sctp_event_subscribe"
4239     check_func getaddrinfo $network_extralibs
4240     check_func getservbyport $network_extralibs
4241     # Prefer arpa/inet.h over winsock2
4242     if check_header arpa/inet.h ; then
4243         check_func closesocket
4244     elif check_header winsock2.h ; then
4245         check_func_headers winsock2.h closesocket -lws2 &&
4246             network_extralibs="-lws2" ||
4247         { check_func_headers winsock2.h closesocket -lws2_32 &&
4248             network_extralibs="-lws2_32"; }
4249         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4250         check_type ws2tcpip.h socklen_t
4251         check_type ws2tcpip.h "struct addrinfo"
4252         check_type ws2tcpip.h "struct group_source_req"
4253         check_type ws2tcpip.h "struct ip_mreq_source"
4254         check_type ws2tcpip.h "struct ipv6_mreq"
4255         check_type winsock2.h "struct pollfd"
4256         check_type ws2tcpip.h "struct sockaddr_in6"
4257         check_type ws2tcpip.h "struct sockaddr_storage"
4258         check_struct winsock2.h "struct sockaddr" sa_len
4259     else
4260         disable network
4261     fi
4262 fi
4263
4264 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4265 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4266
4267 check_func  access
4268 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4269 check_func  fcntl
4270 check_func  fork
4271 check_func_headers stdlib.h getenv
4272 check_func  gethrtime
4273 check_func  getopt
4274 check_func  getrusage
4275 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4276 check_func  gettimeofday
4277 check_func  inet_aton $network_extralibs
4278 check_func  isatty
4279 check_func  localtime_r
4280 check_func  ${malloc_prefix}memalign            && enable memalign
4281 check_func  mkstemp
4282 check_func  mmap
4283 check_func  mprotect
4284 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4285 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4286 check_func  setrlimit
4287 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4288 check_func  strerror_r
4289 check_func  sched_getaffinity
4290 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4291 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4292 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4293 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4294 check_builtin sarestart signal.h "SA_RESTART"
4295 check_func  sysconf
4296 check_func  sysctl
4297 check_func  usleep
4298 check_func_headers conio.h kbhit
4299 check_func_headers windows.h PeekNamedPipe
4300 check_func_headers io.h setmode
4301 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4302 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4303 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4304 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4305 check_func_headers windows.h GetProcessAffinityMask
4306 check_func_headers windows.h GetProcessTimes
4307 check_func_headers windows.h GetSystemTimeAsFileTime
4308 check_func_headers windows.h MapViewOfFile
4309 check_func_headers windows.h SetConsoleTextAttribute
4310 check_func_headers windows.h Sleep
4311 check_func_headers windows.h VirtualAlloc
4312 check_func_headers glob.h glob
4313 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4314
4315 check_header cl/cl.h
4316 check_header direct.h
4317 check_header dlfcn.h
4318 check_header dxva.h
4319 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4320 check_header io.h
4321 check_header libcrystalhd/libcrystalhd_if.h
4322 check_header malloc.h
4323 check_header poll.h
4324 check_header sys/mman.h
4325 check_header sys/param.h
4326 check_header sys/resource.h
4327 check_header sys/select.h
4328 check_header sys/time.h
4329 check_header sys/un.h
4330 check_header termios.h
4331 check_header unistd.h
4332 check_header vdpau/vdpau.h
4333 check_header vdpau/vdpau_x11.h
4334 check_header VideoDecodeAcceleration/VDADecoder.h
4335 check_header windows.h
4336 check_header X11/extensions/XvMClib.h
4337 check_header asm/types.h
4338
4339 if ! disabled w32threads && ! enabled pthreads; then
4340     check_func_headers "windows.h process.h" _beginthreadex &&
4341         enable w32threads || disable w32threads
4342 fi
4343
4344 # check for some common methods of building with pthread support
4345 # do this before the optional library checks as some of them require pthreads
4346 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4347     enable pthreads
4348     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4349         add_cflags -pthread
4350         add_extralibs -pthread
4351     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4352         add_cflags -pthreads
4353         add_extralibs -pthreads
4354     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4355         add_extralibs -lpthreadGC2
4356     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4357         :
4358     elif ! check_func pthread_join && ! check_func pthread_create; then
4359         disable pthreads
4360     fi
4361 fi
4362
4363 for thread in $THREADS_LIST; do
4364     if enabled $thread; then
4365         test -n "$thread_type" &&
4366             die "ERROR: Only one thread type must be selected." ||
4367             thread_type="$thread"
4368     fi
4369 done
4370
4371 if enabled pthreads; then
4372   check_func pthread_cancel
4373 fi
4374
4375 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4376 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4377
4378 check_lib math.h sin -lm && LIBM="-lm"
4379 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4380
4381 atan2f_args=2
4382 ldexpf_args=2
4383 powf_args=2
4384
4385 for func in $MATH_FUNCS; do
4386     eval check_mathfunc $func \${${func}_args:-1}
4387 done
4388
4389 # these are off by default, so fail if requested and not available
4390 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4391                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4392                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4393 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4394 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4395 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4396 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4397 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4398 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4399 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4400 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4401 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4402                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4403                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4404 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4405 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4406 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4407 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"
4408 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4409 enabled libfreetype       && require_libfreetype
4410 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4411 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4412                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4413                                done || die "ERROR: libgsm not found"; }
4414 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4415 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4416 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4417 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4418 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4419 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4420 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4421 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4422                                check_lib openjpeg.h opj_version -lopenjpeg ||
4423                                die "ERROR: libopenjpeg not found"; }
4424 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4425 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4426 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4427 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4428 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4429 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4430 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4431 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4432 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4433 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4434     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4435     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4436 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4437 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4438                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4439                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4440 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4441 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4442 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4443 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4444 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4445 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4446 enabled libvpx            && {
4447     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4448                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4449     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 ||
4450                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4451     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4452     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; } }
4453 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4454 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4455 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4456                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4457                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4458 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4459 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4460 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4461 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4462 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4463                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4464                                die "ERROR: openal not found"; } &&
4465                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4466                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4467 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4468                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4469                                die "ERROR: opencl not found"; } &&
4470                              { ! enabled_any w32threads os2threads ||
4471                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4472                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4473                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4474                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4475 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4476                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4477                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4478                                die "ERROR: openssl not found"; }
4479
4480 if enabled gnutls; then
4481     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4482     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4483 fi
4484
4485 # libdc1394 check
4486 if enabled libdc1394; then
4487     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4488         enable libdc1394_2; } ||
4489     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4490         enable libdc1394_1; } ||
4491     die "ERROR: No version of libdc1394 found "
4492 fi
4493
4494 SDL_CONFIG="${cross_prefix}sdl-config"
4495 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4496     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4497     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4498     enable sdl
4499 else
4500   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4501     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4502     sdl_libs=$("${SDL_CONFIG}" --libs)
4503     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4504     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4505     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4506     enable sdl
4507   fi
4508 fi
4509 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4510
4511 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4512 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4513 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4514 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4515 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4516
4517 check_header linux/fb.h
4518 check_header linux/videodev.h
4519 check_header linux/videodev2.h
4520 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4521
4522 check_header sys/videoio.h
4523
4524 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4525 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4526 # w32api 3.12 had it defined wrong
4527 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4528
4529 check_type "dshow.h" IBaseFilter
4530
4531 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4532 { check_header dev/bktr/ioctl_meteor.h &&
4533   check_header dev/bktr/ioctl_bt848.h; } ||
4534 { check_header machine/ioctl_meteor.h &&
4535   check_header machine/ioctl_bt848.h; } ||
4536 { check_header dev/video/meteor/ioctl_meteor.h &&
4537   check_header dev/video/bktr/ioctl_bt848.h; } ||
4538 check_header dev/ic/bt8xx.h
4539
4540 check_header sndio.h
4541 if check_struct sys/soundcard.h audio_buf_info bytes; then
4542     enable_safe sys/soundcard.h
4543 else
4544     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4545     #include <sys/soundcard.h>
4546     audio_buf_info abc;
4547 EOF
4548 fi
4549 check_header soundcard.h
4550
4551 enabled_any alsa_indev alsa_outdev &&
4552     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4553
4554 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4555     check_func jack_port_get_latency_range -ljack
4556
4557 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4558
4559 if enabled libcdio; then
4560     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4561     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4562     die "ERROR: libcdio-paranoia not found"
4563 fi
4564
4565 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4566
4567 enabled x11grab                                           &&
4568 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4569 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4570 { enabled xlib || die "ERROR: Xlib not found"; }
4571
4572 enabled vaapi &&
4573     check_lib va/va.h vaInitialize -lva ||
4574     disable vaapi
4575
4576 enabled vdpau &&
4577     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4578     disable vdpau
4579
4580 enabled vdpau && enabled xlib &&
4581     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4582     enable vdpau_x11
4583
4584 # Funny iconv installations are not unusual, so check it after all flags have been set
4585 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4586
4587 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4588
4589 # add some useful compiler flags if supported
4590 check_cflags -Wdeclaration-after-statement
4591 check_cflags -Wall
4592 check_cflags -Wdisabled-optimization
4593 check_cflags -Wpointer-arith
4594 check_cflags -Wredundant-decls
4595 check_cflags -Wwrite-strings
4596 check_cflags -Wtype-limits
4597 check_cflags -Wundef
4598 check_cflags -Wmissing-prototypes
4599 check_cflags -Wno-pointer-to-int-cast
4600 check_cflags -Wstrict-prototypes
4601 enabled extra_warnings && check_cflags -Winline
4602
4603 check_disable_warning(){
4604     warning_flag=-W${1#-Wno-}
4605     test_cflags $warning_flag && add_cflags $1
4606 }
4607
4608 check_disable_warning -Wno-parentheses
4609 check_disable_warning -Wno-switch
4610 check_disable_warning -Wno-format-zero-length
4611 check_disable_warning -Wno-pointer-sign
4612
4613 # add some linker flags
4614 check_ldflags -Wl,--warn-common
4615 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4616 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4617 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4618
4619 # add some strip flags
4620 # -wN '..@*' is more selective than -x, but not available everywhere.
4621 check_stripflags -wN \'..@*\' || check_stripflags -x
4622
4623 enabled xmm_clobber_test &&
4624     check_ldflags -Wl,--wrap,avcodec_open2              \
4625                   -Wl,--wrap,avcodec_decode_audio4      \
4626                   -Wl,--wrap,avcodec_decode_video2      \
4627                   -Wl,--wrap,avcodec_decode_subtitle2   \
4628                   -Wl,--wrap,avcodec_encode_audio2      \
4629                   -Wl,--wrap,avcodec_encode_video       \
4630                   -Wl,--wrap,avcodec_encode_video2      \
4631                   -Wl,--wrap,avcodec_encode_subtitle    \
4632                   -Wl,--wrap,sws_scale ||
4633     disable xmm_clobber_test
4634
4635 echo "X{};" > $TMPV
4636 if test_ldflags -Wl,--version-script,$TMPV; then
4637     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4638     check_cc <<EOF && enable symver_asm_label
4639 void ff_foo(void) __asm__ ("av_foo@VERSION");
4640 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4641 EOF
4642     check_cc <<EOF && enable symver_gnu_asm
4643 __asm__(".symver ff_foo,av_foo@VERSION");
4644 void ff_foo(void) {}
4645 EOF
4646 fi
4647
4648 if [ -z "$optflags" ]; then
4649     if enabled small; then
4650         optflags=$cflags_size
4651     elif enabled optimizations; then
4652         optflags=$cflags_speed
4653     else
4654         optflags=$cflags_noopt
4655     fi
4656 fi
4657
4658 check_optflags(){
4659     check_cflags "$@"
4660     enabled lto && check_ldflags "$@"
4661 }
4662
4663
4664 if enabled lto; then
4665     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4666     check_cflags  -flto
4667     check_ldflags -flto $cpuflags
4668 fi
4669
4670 check_optflags $optflags
4671 check_optflags -fno-math-errno
4672 check_optflags -fno-signed-zeros
4673
4674 enabled ftrapv && check_cflags -ftrapv
4675
4676 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4677 int x;
4678 EOF
4679
4680
4681 if enabled icc; then
4682     # Just warnings, no remarks
4683     check_cflags -w1
4684     # -wd: Disable following warnings
4685     # 144, 167, 556: -Wno-pointer-sign
4686     # 188: enumerated type mixed with another type
4687     # 1292: attribute "foo" ignored
4688     # 1419: external declaration in primary source file
4689     # 10006: ignoring unknown option -fno-signed-zeros
4690     # 10148: ignoring unknown option -Wno-parentheses
4691     # 10156: ignoring option '-W'; no argument required
4692     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4693     # 11030: Warning unknown option --as-needed
4694     # 10156: ignoring option '-export'; no argument required
4695     check_ldflags -wd10156,11030
4696     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4697     enable ebp_available
4698     if enabled x86_32; then
4699         icc_version=$($cc -dumpversion)
4700         test ${icc_version%%.*} -ge 11 &&
4701             check_cflags -falign-stack=maintain-16-byte ||
4702             disable aligned_stack
4703     fi
4704 elif enabled ccc; then
4705     # disable some annoying warnings
4706     add_cflags -msg_disable bitnotint
4707     add_cflags -msg_disable mixfuncvoid
4708     add_cflags -msg_disable nonstandcast
4709     add_cflags -msg_disable unsupieee
4710 elif enabled gcc; then
4711     check_optflags -fno-tree-vectorize
4712     check_cflags -Werror=implicit-function-declaration
4713     check_cflags -Werror=missing-prototypes
4714     check_cflags -Werror=return-type
4715     check_cflags -Werror=vla
4716     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4717 elif enabled llvm_gcc; then
4718     check_cflags -mllvm -stack-alignment=16
4719 elif enabled clang; then
4720     check_cflags -mllvm -stack-alignment=16
4721     check_cflags -Qunused-arguments
4722     check_cflags -Werror=implicit-function-declaration
4723     check_cflags -Werror=missing-prototypes
4724     check_cflags -Werror=return-type
4725 elif enabled cparser; then
4726     add_cflags -Wno-missing-variable-declarations
4727     add_cflags -Wno-empty-statement
4728 elif enabled armcc; then
4729     # 2523: use of inline assembler is deprecated
4730     add_cflags -W${armcc_opt},--diag_suppress=2523
4731     add_cflags -W${armcc_opt},--diag_suppress=1207
4732     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4733     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4734     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4735     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4736 elif enabled tms470; then
4737     add_cflags -pds=824 -pds=837
4738     disable inline_asm
4739 elif enabled pathscale; then
4740     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4741 elif enabled_any msvc icl; then
4742     enabled x86_32 && disable aligned_stack
4743     enabled_all x86_32 debug && add_cflags -Oy-
4744     enabled debug && add_ldflags -debug
4745     enable pragma_deprecated
4746     if enabled icl; then
4747         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4748         # (correctly) on icl 13.x.
4749         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4750             add_cflags -Qansi-alias
4751         # icl will pass the inline asm tests but inline asm is currently
4752         # not supported (build will fail)
4753         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4754         disable inline_asm
4755     fi
4756 fi
4757
4758 case $target_os in
4759     osf1)
4760         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4761     ;;
4762     plan9)
4763         add_cppflags -Dmain=plan9_main
4764     ;;
4765 esac
4766
4767 enable frame_thread_encoder
4768
4769 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4770
4771 check_deps $CONFIG_LIST       \
4772            $CONFIG_EXTRA      \
4773            $HAVE_LIST         \
4774            $ALL_COMPONENTS    \
4775
4776 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4777
4778
4779 if test $target_os = "haiku"; then
4780     disable memalign
4781     disable posix_memalign
4782 fi
4783
4784 ! enabled_any memalign posix_memalign aligned_malloc &&
4785     enabled_any $need_memalign && enable memalign_hack
4786
4787 # add_dep lib dep
4788 # -> enable ${lib}_deps_${dep}
4789 # -> add $dep to ${lib}_deps only once
4790 add_dep() {
4791     lib=$1
4792     dep=$2
4793     enabled "${lib}_deps_${dep}" && return 0
4794     enable &