0dac109e5c11f53bce8c1c6c621b12440d172035
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav 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 LIBAV, 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 Libav."
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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     fmtconvert
1592     gcrypt
1593     gmp
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     huffyuvdsp
1604     huffyuvencdsp
1605     idctdsp
1606     iirfilter
1607     imdct15
1608     intrax8
1609     jpegtables
1610     libx262
1611     lgplv3
1612     lpc
1613     me_cmp
1614     mpeg_er
1615     mpegaudio
1616     mpegaudiodsp
1617     mpegvideo
1618     mpegvideoenc
1619     pixblockdsp
1620     qpeldsp
1621     qsv
1622     qsvdec
1623     qsvenc
1624     rangecoder
1625     riffdec
1626     riffenc
1627     rtpdec
1628     rtpenc_chain
1629     sinewin
1630     snappy
1631     startcode
1632     texturedsp
1633     texturedspenc
1634     tpeldsp
1635     videodsp
1636     vp3dsp
1637     wma_freqs
1638 "
1639
1640 CMDLINE_SELECT="
1641     $ARCH_EXT_LIST
1642     $CONFIG_LIST
1643     $HAVE_LIST_CMDLINE
1644     $THREADS_LIST
1645     asm
1646     cross_compile
1647     debug
1648     extra_warnings
1649     logging
1650     lto
1651     optimizations
1652     rpath
1653 "
1654
1655 PATHS_LIST="
1656     bindir
1657     datadir
1658     docdir
1659     incdir
1660     libdir
1661     mandir
1662     prefix
1663     shlibdir
1664 "
1665
1666 CMDLINE_SET="
1667     $PATHS_LIST
1668     ar
1669     arch
1670     as
1671     build_suffix
1672     cc
1673     cpu
1674     cross_prefix
1675     dep_cc
1676     env
1677     extra_version
1678     host_cc
1679     host_cflags
1680     host_ld
1681     host_ldflags
1682     host_libs
1683     host_os
1684     ld
1685     logfile
1686     malloc_prefix
1687     nm
1688     optflags
1689     pkg_config
1690     pkg_config_flags
1691     random_seed
1692     samples
1693     sysinclude
1694     sysroot
1695     target_exec
1696     target_os
1697     target_path
1698     target_samples
1699     toolchain
1700 "
1701
1702 CMDLINE_APPEND="
1703     extra_cflags
1704     host_cppflags
1705 "
1706
1707 # code dependency declarations
1708
1709 # architecture extensions
1710
1711 armv5te_deps="arm"
1712 armv6_deps="arm"
1713 armv6t2_deps="arm"
1714 armv8_deps="aarch64"
1715 neon_deps_any="aarch64 arm"
1716 intrinsics_neon_deps="neon"
1717 vfp_deps_any="aarch64 arm"
1718 vfpv3_deps="vfp"
1719
1720 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1721
1722 altivec_deps="ppc"
1723 ppc4xx_deps="ppc"
1724 vsx_deps="altivec"
1725 power8_deps="vsx"
1726
1727 cpunop_deps="i686"
1728 x86_64_select="i686"
1729 x86_64_suggest="fast_cmov"
1730
1731 amd3dnow_deps="mmx"
1732 amd3dnowext_deps="amd3dnow"
1733 i686_deps="x86"
1734 mmx_deps="x86"
1735 mmxext_deps="mmx"
1736 sse_deps="mmxext"
1737 sse2_deps="sse"
1738 sse3_deps="sse2"
1739 ssse3_deps="sse3"
1740 sse4_deps="ssse3"
1741 sse42_deps="sse4"
1742 avx_deps="sse42"
1743 xop_deps="avx"
1744 fma3_deps="avx"
1745 fma4_deps="avx"
1746 avx2_deps="avx"
1747
1748 mmx_external_deps="yasm"
1749 mmx_inline_deps="inline_asm"
1750 mmx_suggest="mmx_external mmx_inline"
1751
1752 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1753     eval dep=\$${ext}_deps
1754     eval ${ext}_external_deps='"${dep}_external"'
1755     eval ${ext}_inline_deps='"${dep}_inline"'
1756     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1757 done
1758
1759 aligned_stack_if_any="aarch64 ppc x86"
1760 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1761 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1762 fast_unaligned_if_any="aarch64 ppc x86"
1763 simd_align_16_if_any="altivec neon sse"
1764
1765 # system capabilities
1766 symver_if_any="symver_asm_label symver_gnu_asm"
1767 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1768
1769 # threading support
1770 atomics_gcc_if="sync_val_compare_and_swap"
1771 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1772 atomics_win32_if="MemoryBarrier"
1773 atomics_native_if_any="$ATOMICS_LIST"
1774 w32threads_deps="atomics_native"
1775 threads_if_any="$THREADS_LIST"
1776
1777 # subsystems
1778 dct_select="rdft"
1779 error_resilience_select="me_cmp"
1780 faandct_deps="faan fdctdsp"
1781 faanidct_deps="faan idctdsp"
1782 intrax8_select="error_resilience"
1783 mdct_select="fft"
1784 rdft_select="fft"
1785 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1786 mpeg_er_select="error_resilience"
1787 mpegaudio_select="mpegaudiodsp"
1788 mpegaudiodsp_select="dct"
1789 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1790 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1791 nvenc_deps_any="dlopen LoadLibrary"
1792 nvenc_extralibs='$ldl'
1793 qsvdec_select="qsv"
1794 qsvenc_select="qsv"
1795
1796 # decoders / encoders
1797 aac_decoder_select="imdct15 mdct sinewin"
1798 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1799 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1800 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1801 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1802 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1803 aic_decoder_select="golomb idctdsp"
1804 alac_encoder_select="lpc"
1805 als_decoder_select="bswapdsp"
1806 amrnb_decoder_select="lsp"
1807 amrwb_decoder_select="lsp"
1808 amv_decoder_select="sp5x_decoder"
1809 ape_decoder_select="bswapdsp"
1810 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1811 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1812 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1813 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1814 atrac1_decoder_select="mdct sinewin"
1815 atrac3_decoder_select="mdct"
1816 atrac3p_decoder_select="mdct sinewin"
1817 bink_decoder_select="blockdsp hpeldsp"
1818 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1819 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1820 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1821 cllc_decoder_select="bswapdsp"
1822 comfortnoise_encoder_select="lpc"
1823 cook_decoder_select="audiodsp mdct sinewin"
1824 cscd_decoder_select="lzo"
1825 cscd_decoder_suggest="zlib"
1826 dca_decoder_select="fmtconvert mdct"
1827 dds_decoder_select="texturedsp"
1828 dnxhd_decoder_select="blockdsp idctdsp"
1829 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1830 dvvideo_decoder_select="dvprofile idctdsp"
1831 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1832 dxa_decoder_deps="zlib"
1833 eac3_decoder_select="ac3_decoder"
1834 eac3_encoder_select="ac3_encoder"
1835 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1836 eatgq_decoder_select="aandcttables idctdsp"
1837 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1838 exr_decoder_deps="zlib"
1839 ffv1_decoder_select="golomb rangecoder"
1840 ffv1_encoder_select="rangecoder"
1841 ffvhuff_decoder_select="huffyuv_decoder"
1842 ffvhuff_encoder_select="huffyuv_encoder"
1843 fic_decoder_select="golomb"
1844 flac_decoder_select="golomb"
1845 flac_encoder_select="bswapdsp golomb lpc"
1846 flashsv_decoder_deps="zlib"
1847 flashsv_encoder_deps="zlib"
1848 flashsv2_decoder_deps="zlib"
1849 flv_decoder_select="h263_decoder"
1850 flv_encoder_select="h263_encoder"
1851 fourxm_decoder_select="blockdsp bswapdsp"
1852 fraps_decoder_select="bswapdsp huffman"
1853 g2m_decoder_deps="zlib"
1854 g2m_decoder_select="blockdsp idctdsp jpegtables"
1855 h261_decoder_select="mpeg_er mpegvideo"
1856 h261_encoder_select="aandcttables mpegvideoenc"
1857 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1858 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1859 h263i_decoder_select="h263_decoder"
1860 h263p_encoder_select="h263_encoder"
1861 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1862 h264_decoder_suggest="error_resilience"
1863 h264_nvenc_encoder_deps="nvenc"
1864 h264_qsv_decoder_deps="libmfx"
1865 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1866 h264_qsv_encoder_deps="libmfx"
1867 h264_qsv_encoder_select="qsvenc"
1868 hap_decoder_select="snappy texturedsp"
1869 hap_encoder_deps="libsnappy"
1870 hap_encoder_select="texturedspenc"
1871 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1872 hevc_nvenc_encoder_deps="nvenc"
1873 hevc_qsv_encoder_deps="libmfx"
1874 hevc_qsv_encoder_select="qsvenc"
1875 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1876 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1877 iac_decoder_select="imc_decoder"
1878 imc_decoder_select="bswapdsp fft mdct sinewin"
1879 indeo3_decoder_select="hpeldsp"
1880 interplay_video_decoder_select="hpeldsp"
1881 jpegls_decoder_select="golomb mjpeg_decoder"
1882 jpegls_encoder_select="golomb"
1883 jv_decoder_select="blockdsp"
1884 lagarith_decoder_select="huffyuvdsp"
1885 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1886 loco_decoder_select="golomb"
1887 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1888 metasound_decoder_select="lsp mdct sinewin"
1889 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1890 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1891 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1892 mjpegb_decoder_select="mjpeg_decoder"
1893 mlp_decoder_select="mlp_parser"
1894 motionpixels_decoder_select="bswapdsp"
1895 mp1_decoder_select="mpegaudio"
1896 mp1float_decoder_select="mpegaudio"
1897 mp2_decoder_select="mpegaudio"
1898 mp2float_decoder_select="mpegaudio"
1899 mp3_decoder_select="mpegaudio"
1900 mp3adu_decoder_select="mpegaudio"
1901 mp3adufloat_decoder_select="mpegaudio"
1902 mp3float_decoder_select="mpegaudio"
1903 mp3on4_decoder_select="mpegaudio"
1904 mp3on4float_decoder_select="mpegaudio"
1905 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1906 mpc8_decoder_select="mpegaudiodsp"
1907 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1908 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1909 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1910 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1911 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1912 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1913 mpeg2_qsv_encoder_deps="libmfx"
1914 mpeg2_qsv_encoder_select="qsvenc"
1915 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1916 mpeg4_encoder_select="h263_encoder"
1917 msmpeg4v1_decoder_select="h263_decoder"
1918 msmpeg4v2_decoder_select="h263_decoder"
1919 msmpeg4v2_encoder_select="h263_encoder"
1920 msmpeg4v3_decoder_select="h263_decoder"
1921 msmpeg4v3_encoder_select="h263_encoder"
1922 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1923 mxpeg_decoder_select="mjpeg_decoder"
1924 nellymoser_decoder_select="mdct sinewin"
1925 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1926 nuv_decoder_select="idctdsp lzo"
1927 on2avc_decoder_select="mdct"
1928 opus_decoder_deps="avresample"
1929 opus_decoder_select="imdct15"
1930 png_decoder_deps="zlib"
1931 png_encoder_deps="zlib"
1932 png_encoder_select="huffyuvencdsp"
1933 prores_decoder_select="idctdsp"
1934 prores_encoder_select="fdctdsp"
1935 qcelp_decoder_select="lsp"
1936 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1937 ra_144_encoder_select="audio_frame_queue lpc"
1938 ralf_decoder_select="golomb"
1939 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1940 rv10_encoder_select="h263_encoder"
1941 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1942 rv20_encoder_select="h263_encoder"
1943 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1944 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1945 shorten_decoder_select="golomb"
1946 sipr_decoder_select="lsp"
1947 sp5x_decoder_select="mjpeg_decoder"
1948 svq1_decoder_select="hpeldsp"
1949 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1950 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1951 svq3_decoder_suggest="zlib"
1952 tak_decoder_select="audiodsp"
1953 tdsc_decoder_deps="zlib"
1954 tdsc_decoder_select="mjpeg_decoder"
1955 theora_decoder_select="vp3_decoder"
1956 thp_decoder_select="mjpeg_decoder"
1957 tiff_decoder_suggest="zlib"
1958 tiff_encoder_suggest="zlib"
1959 truehd_decoder_select="mlp_decoder"
1960 truemotion2_decoder_select="bswapdsp"
1961 truespeech_decoder_select="bswapdsp"
1962 tscc_decoder_deps="zlib"
1963 txd_decoder_select="texturedsp"
1964 twinvq_decoder_select="mdct lsp sinewin"
1965 utvideo_decoder_select="bswapdsp"
1966 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1967 vble_decoder_select="huffyuvdsp"
1968 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1969 vc1image_decoder_select="vc1_decoder"
1970 vorbis_decoder_select="mdct"
1971 vorbis_encoder_select="mdct"
1972 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1973 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1974 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1975 vp6a_decoder_select="vp6_decoder"
1976 vp6f_decoder_select="vp6_decoder"
1977 vp7_decoder_select="h264pred videodsp"
1978 vp8_decoder_select="h264pred videodsp"
1979 vp9_decoder_select="videodsp"
1980 webp_decoder_select="vp8_decoder"
1981 wmapro_decoder_select="mdct sinewin wma_freqs"
1982 wmav1_decoder_select="mdct sinewin wma_freqs"
1983 wmav1_encoder_select="mdct sinewin wma_freqs"
1984 wmav2_decoder_select="mdct sinewin wma_freqs"
1985 wmav2_encoder_select="mdct sinewin wma_freqs"
1986 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1987 wmv1_decoder_select="h263_decoder"
1988 wmv1_encoder_select="h263_encoder"
1989 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1990 wmv2_encoder_select="h263_encoder"
1991 wmv3_decoder_select="vc1_decoder"
1992 wmv3image_decoder_select="wmv3_decoder"
1993 zerocodec_decoder_deps="zlib"
1994 zlib_decoder_deps="zlib"
1995 zlib_encoder_deps="zlib"
1996 zmbv_decoder_deps="zlib"
1997 zmbv_encoder_deps="zlib"
1998
1999 # hardware accelerators
2000 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2001 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2002 vaapi_deps="va_va_h"
2003 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2004 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2005 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2006
2007 h263_vaapi_hwaccel_deps="vaapi"
2008 h263_vaapi_hwaccel_select="h263_decoder"
2009 h263_vdpau_hwaccel_deps="vdpau"
2010 h263_vdpau_hwaccel_select="h263_decoder"
2011 h264_d3d11va_hwaccel_deps="d3d11va"
2012 h264_d3d11va_hwaccel_select="h264_decoder"
2013 h264_dxva2_hwaccel_deps="dxva2"
2014 h264_dxva2_hwaccel_select="h264_decoder"
2015 h264_mmal_decoder_deps="mmal"
2016 h264_mmal_hwaccel_deps="mmal"
2017 h264_mmal_decoder_select="h264_decoder"
2018 h264_mmal_encoder_deps="mmal"
2019 h264_qsv_hwaccel_deps="libmfx"
2020 h264_vaapi_hwaccel_deps="vaapi"
2021 h264_vaapi_hwaccel_select="h264_decoder"
2022 h264_vda_hwaccel_deps="vda"
2023 h264_vda_hwaccel_select="h264_decoder"
2024 h264_vda_old_hwaccel_deps="vda"
2025 h264_vda_old_hwaccel_select="h264_decoder"
2026 h264_vdpau_hwaccel_deps="vdpau"
2027 h264_vdpau_hwaccel_select="h264_decoder"
2028 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2029 hevc_d3d11va_hwaccel_select="hevc_decoder"
2030 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2031 hevc_dxva2_hwaccel_select="hevc_decoder"
2032 mpeg1_vdpau_hwaccel_deps="vdpau"
2033 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2034 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2035 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2036 mpeg2_dxva2_hwaccel_deps="dxva2"
2037 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2038 mpeg2_vaapi_hwaccel_deps="vaapi"
2039 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2040 mpeg2_vdpau_hwaccel_deps="vdpau"
2041 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2042 mpeg4_vaapi_hwaccel_deps="vaapi"
2043 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2044 mpeg4_vdpau_hwaccel_deps="vdpau"
2045 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2046 vc1_d3d11va_hwaccel_deps="d3d11va"
2047 vc1_d3d11va_hwaccel_select="vc1_decoder"
2048 vc1_dxva2_hwaccel_deps="dxva2"
2049 vc1_dxva2_hwaccel_select="vc1_decoder"
2050 vc1_vaapi_hwaccel_deps="vaapi"
2051 vc1_vaapi_hwaccel_select="vc1_decoder"
2052 vc1_vdpau_hwaccel_deps="vdpau"
2053 vc1_vdpau_hwaccel_select="vc1_decoder"
2054 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2055 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2056 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2057 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2058
2059 # parsers
2060 h264_parser_select="h264_decoder"
2061 hevc_parser_select="golomb"
2062 mpegvideo_parser_select="mpegvideo"
2063 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2064 vc1_parser_select="mpegvideo startcode vc1_decoder"
2065
2066 # bitstream_filters
2067 mjpeg2jpeg_bsf_select="jpegtables"
2068
2069 # external libraries
2070 libdcadec_decoder_deps="libdcadec"
2071 libfaac_encoder_deps="libfaac"
2072 libfaac_encoder_select="audio_frame_queue"
2073 libfdk_aac_decoder_deps="libfdk_aac"
2074 libfdk_aac_encoder_deps="libfdk_aac"
2075 libfdk_aac_encoder_select="audio_frame_queue"
2076 libgsm_decoder_deps="libgsm"
2077 libgsm_encoder_deps="libgsm"
2078 libgsm_ms_decoder_deps="libgsm"
2079 libgsm_ms_encoder_deps="libgsm"
2080 libilbc_decoder_deps="libilbc"
2081 libilbc_encoder_deps="libilbc"
2082 libmp3lame_encoder_deps="libmp3lame"
2083 libmp3lame_encoder_select="audio_frame_queue"
2084 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2085 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2086 libopencore_amrnb_encoder_select="audio_frame_queue"
2087 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2088 libopenh264_encoder_deps="libopenh264"
2089 libopenjpeg_decoder_deps="libopenjpeg"
2090 libopenjpeg_encoder_deps="libopenjpeg"
2091 libopus_decoder_deps="libopus"
2092 libopus_encoder_deps="libopus"
2093 libopus_encoder_select="audio_frame_queue"
2094 libschroedinger_decoder_deps="libschroedinger"
2095 libschroedinger_encoder_deps="libschroedinger"
2096 libspeex_decoder_deps="libspeex"
2097 libspeex_encoder_deps="libspeex"
2098 libspeex_encoder_select="audio_frame_queue"
2099 libtheora_encoder_deps="libtheora"
2100 libtwolame_encoder_deps="libtwolame"
2101 libvo_aacenc_encoder_deps="libvo_aacenc"
2102 libvo_aacenc_encoder_select="audio_frame_queue"
2103 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2104 libvorbis_encoder_deps="libvorbis"
2105 libvorbis_encoder_select="audio_frame_queue"
2106 libvpx_vp8_decoder_deps="libvpx"
2107 libvpx_vp8_encoder_deps="libvpx"
2108 libvpx_vp9_decoder_deps="libvpx"
2109 libvpx_vp9_encoder_deps="libvpx"
2110 libwavpack_encoder_deps="libwavpack"
2111 libwebp_encoder_deps="libwebp"
2112 libx262_encoder_deps="libx262"
2113 libx264_encoder_deps="libx264"
2114 libx265_encoder_deps="libx265"
2115 libxavs_encoder_deps="libxavs"
2116 libxvid_encoder_deps="libxvid"
2117
2118 # demuxers / muxers
2119 ac3_demuxer_select="ac3_parser"
2120 asf_demuxer_select="riffdec"
2121 asf_muxer_select="riffenc"
2122 asf_stream_muxer_select="asf_muxer"
2123 avi_demuxer_select="riffdec"
2124 avi_muxer_select="riffenc"
2125 avisynth_demuxer_deps="avisynth"
2126 avisynth_demuxer_select="riffdec"
2127 caf_demuxer_select="riffdec"
2128 dash_muxer_select="mp4_muxer"
2129 dirac_demuxer_select="dirac_parser"
2130 dv_demuxer_select="dvprofile"
2131 dv_muxer_select="dvprofile"
2132 dxa_demuxer_select="riffdec"
2133 eac3_demuxer_select="ac3_parser"
2134 f4v_muxer_select="mov_muxer"
2135 flac_demuxer_select="flac_parser"
2136 hds_muxer_select="flv_muxer"
2137 hls_muxer_select="mpegts_muxer"
2138 ipod_muxer_select="mov_muxer"
2139 ismv_muxer_select="mov_muxer"
2140 matroska_audio_muxer_select="matroska_muxer"
2141 matroska_demuxer_select="riffdec"
2142 matroska_demuxer_suggest="bzlib lzo zlib"
2143 matroska_muxer_select="riffenc"
2144 mmf_muxer_select="riffenc"
2145 mov_demuxer_select="riffdec"
2146 mov_demuxer_suggest="zlib"
2147 mov_muxer_select="riffenc rtpenc_chain"
2148 mp3_demuxer_select="mpegaudio_parser"
2149 mp4_muxer_select="mov_muxer"
2150 mpegts_muxer_select="adts_muxer latm_muxer"
2151 mpegtsraw_demuxer_select="mpegts_demuxer"
2152 mxf_d10_muxer_select="mxf_muxer"
2153 nut_muxer_select="riffenc"
2154 nuv_demuxer_select="riffdec"
2155 oga_muxer_select="ogg_muxer"
2156 ogg_demuxer_select="golomb"
2157 opus_muxer_select="ogg_muxer"
2158 psp_muxer_select="mov_muxer"
2159 rtp_demuxer_select="sdp_demuxer"
2160 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2161 rtsp_demuxer_select="http_protocol rtpdec"
2162 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2163 sap_demuxer_select="sdp_demuxer"
2164 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2165 sdp_demuxer_select="rtpdec"
2166 smoothstreaming_muxer_select="ismv_muxer"
2167 spdif_muxer_select="aac_parser"
2168 spx_muxer_select="ogg_muxer"
2169 tak_demuxer_select="tak_parser"
2170 tg2_muxer_select="mov_muxer"
2171 tgp_muxer_select="mov_muxer"
2172 w64_demuxer_select="wav_demuxer"
2173 wav_demuxer_select="riffdec"
2174 wav_muxer_select="riffenc"
2175 webm_muxer_select="riffenc"
2176 wtv_demuxer_select="riffdec"
2177 xmv_demuxer_select="riffdec"
2178 xwma_demuxer_select="riffdec"
2179
2180 # indevs / outdevs
2181 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2182 alsa_outdev_deps="alsa_asoundlib_h"
2183 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2184 dv1394_indev_deps="dv1394"
2185 dv1394_indev_select="dv_demuxer"
2186 fbdev_indev_deps="linux_fb_h"
2187 jack_indev_deps="jack_jack_h pthreads"
2188 libcdio_indev_deps="libcdio"
2189 libdc1394_indev_deps="libdc1394"
2190 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2191 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2192 pulse_indev_deps="libpulse"
2193 sndio_indev_deps="sndio_h"
2194 sndio_outdev_deps="sndio_h"
2195 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2196 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2197 vfwcap_indev_extralibs="-lavicap32"
2198 x11grab_indev_deps="x11grab"
2199 x11grab_xcb_indev_deps="libxcb"
2200
2201 # protocols
2202 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2203 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2204 ffrtmpcrypt_protocol_select="tcp_protocol"
2205 ffrtmphttp_protocol_deps="!librtmp_protocol"
2206 ffrtmphttp_protocol_select="http_protocol"
2207 gopher_protocol_select="network"
2208 http_protocol_select="tcp_protocol"
2209 httpproxy_protocol_select="tcp_protocol"
2210 https_protocol_select="tls_protocol"
2211 icecast_protocol_select="http_protocol"
2212 librtmp_protocol_deps="librtmp"
2213 librtmpe_protocol_deps="librtmp"
2214 librtmps_protocol_deps="librtmp"
2215 librtmpt_protocol_deps="librtmp"
2216 librtmpte_protocol_deps="librtmp"
2217 mmsh_protocol_select="http_protocol"
2218 mmst_protocol_select="network"
2219 rtmp_protocol_deps="!librtmp_protocol"
2220 rtmp_protocol_select="tcp_protocol"
2221 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2222 rtmps_protocol_deps="!librtmp_protocol"
2223 rtmps_protocol_select="tls_protocol"
2224 rtmpt_protocol_select="ffrtmphttp_protocol"
2225 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2226 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2227 rtp_protocol_select="udp_protocol"
2228 sctp_protocol_deps="struct_sctp_event_subscribe"
2229 sctp_protocol_select="network"
2230 srtp_protocol_select="rtp_protocol"
2231 tcp_protocol_select="network"
2232 tls_gnutls_protocol_deps="gnutls"
2233 tls_gnutls_protocol_select="tcp_protocol"
2234 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2235 tls_openssl_protocol_select="tcp_protocol"
2236 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2237 udp_protocol_select="network"
2238 unix_protocol_deps="sys_un_h"
2239 unix_protocol_select="network"
2240
2241 # filters
2242 blackframe_filter_deps="gpl"
2243 boxblur_filter_deps="gpl"
2244 bs2b_filter_deps="libbs2b"
2245 cropdetect_filter_deps="gpl"
2246 delogo_filter_deps="gpl"
2247 drawtext_filter_deps="libfreetype"
2248 frei0r_filter_deps="frei0r dlopen"
2249 frei0r_filter_extralibs='$ldl'
2250 frei0r_src_filter_deps="frei0r dlopen"
2251 frei0r_src_filter_extralibs='$ldl'
2252 hqdn3d_filter_deps="gpl"
2253 interlace_filter_deps="gpl"
2254 ocv_filter_deps="libopencv"
2255 resample_filter_deps="avresample"
2256 scale_filter_deps="swscale"
2257
2258 # examples
2259 avcodec_example_deps="avcodec avutil"
2260 filter_audio_example_deps="avfilter avutil"
2261 metadata_example_deps="avformat avutil"
2262 output_example_deps="avcodec avformat avutil swscale"
2263 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2264 transcode_aac_example_deps="avcodec avformat avresample"
2265
2266 # libraries, in linking order
2267 avcodec_deps="avutil"
2268 avdevice_deps="avformat avcodec avutil"
2269 avfilter_deps="avutil"
2270 avformat_deps="avcodec avutil"
2271 avresample_deps="avutil"
2272 swscale_deps="avutil"
2273
2274 # programs
2275 avconv_deps="avcodec avfilter avformat avresample swscale"
2276 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2277                fps_filter null_filter resample_filter scale_filter
2278                setpts_filter trim_filter"
2279 avplay_deps="avcodec avformat avresample swscale sdl"
2280 avplay_libs='$sdl_libs'
2281 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2282 avprobe_deps="avcodec avformat"
2283
2284 # documentation
2285 pod2man_deps="doc"
2286 texi2html_deps="doc"
2287
2288 # default parameters
2289
2290 logfile="config.log"
2291
2292 # installation paths
2293 prefix_default="/usr/local"
2294 bindir_default='${prefix}/bin'
2295 datadir_default='${prefix}/share/avconv'
2296 docdir_default='${prefix}/share/doc/libav'
2297 incdir_default='${prefix}/include'
2298 libdir_default='${prefix}/lib'
2299 mandir_default='${prefix}/share/man'
2300 shlibdir_default="$libdir_default"
2301
2302 # toolchain
2303 ar_default="ar"
2304 cc_default="gcc"
2305 host_cc_default="gcc"
2306 cp_f="cp -f"
2307 ln_s="ln -s -f"
2308 nm_default="nm -g"
2309 objformat="elf"
2310 pkg_config_default=pkg-config
2311 ranlib="ranlib"
2312 strip="strip"
2313 yasmexe="yasm"
2314
2315 # machine
2316 arch_default=$(uname -m)
2317 cpu="generic"
2318 intrinsics="none"
2319
2320 # OS
2321 target_os_default=$(tolower $(uname -s))
2322 host_os=$target_os_default
2323
2324 # configurable options
2325 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2326
2327 enable asm
2328 enable debug
2329 enable doc
2330 enable faan faandct faanidct
2331 enable optimizations
2332 enable safe_bitstream_reader
2333 enable static
2334 enable swscale_alpha
2335 enable valgrind_backtrace
2336
2337 # By default, enable only those hwaccels that have no external dependencies.
2338 enable d3d11va dxva2 vda vdpau
2339
2340 # build settings
2341 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2342 LIBPREF="lib"
2343 LIBSUF=".a"
2344 FULLNAME='$(NAME)$(BUILDSUF)'
2345 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2346 SLIBPREF="lib"
2347 SLIBSUF=".so"
2348 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2349 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2350 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2351 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2352 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2353 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2354
2355 asflags_filter=echo
2356 cflags_filter=echo
2357 ldflags_filter=echo
2358
2359 AS_C='-c'
2360 AS_O='-o $@'
2361 CC_C='-c'
2362 CC_E='-E -o $@'
2363 CC_O='-o $@'
2364 LD_O='-o $@'
2365 LD_LIB='-l%'
2366 LD_PATH='-L'
2367 HOSTCC_C='-c'
2368 HOSTCC_E='-E -o $@'
2369 HOSTCC_O='-o $@'
2370 HOSTLD_O='-o $@'
2371
2372 host_libs='-lm'
2373 host_cflags_filter=echo
2374 host_ldflags_filter=echo
2375
2376 target_path='$(CURDIR)'
2377
2378 # since the object filename is not given with the -MM flag, the compiler
2379 # is only able to print the basename, and we must add the path ourselves
2380 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2381 DEPFLAGS='-MM'
2382
2383 # find source path
2384 if test -f configure; then
2385     source_path=.
2386 else
2387     source_path=$(cd $(dirname "$0"); pwd)
2388     echo "$source_path" | grep -q '[[:blank:]]' &&
2389         die "Out of tree builds are impossible with whitespace in source path."
2390     test -e "$source_path/config.h" &&
2391         die "Out of tree builds are impossible with config.h in source dir."
2392 fi
2393
2394 for v in "$@"; do
2395     r=${v#*=}
2396     l=${v%"$r"}
2397     r=$(sh_quote "$r")
2398     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2399 done
2400
2401 find_things(){
2402     thing=$1
2403     pattern=$2
2404     file=$source_path/$3
2405     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2406 }
2407
2408 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2409 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2410 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2411 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2412 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2413 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2414 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2415 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2416 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2417 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2418 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2419
2420 ALL_COMPONENTS="
2421     $BSF_LIST
2422     $DECODER_LIST
2423     $DEMUXER_LIST
2424     $ENCODER_LIST
2425     $FILTER_LIST
2426     $HWACCEL_LIST
2427     $INDEV_LIST
2428     $MUXER_LIST
2429     $OUTDEV_LIST
2430     $PARSER_LIST
2431     $PROTOCOL_LIST
2432 "
2433
2434 for n in $COMPONENT_LIST; do
2435     v=$(toupper ${n%s})_LIST
2436     eval enable \$$v
2437     eval ${n}_if_any="\$$v"
2438 done
2439
2440 enable $ARCH_EXT_LIST
2441
2442 die_unknown(){
2443     echo "Unknown option \"$1\"."
2444     echo "See $0 --help for available options."
2445     exit 1
2446 }
2447
2448 print_3_columns() {
2449     cat | tr ' ' '\n' | sort | pr -r -3 -t
2450 }
2451
2452 show_list() {
2453     suffix=_$1
2454     shift
2455     echo $* | sed s/$suffix//g | print_3_columns
2456     exit 0
2457 }
2458
2459 rand_list(){
2460     IFS=', '
2461     set -- $*
2462     unset IFS
2463     for thing; do
2464         comp=${thing%:*}
2465         prob=${thing#$comp}
2466         prob=${prob#:}
2467         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2468         echo "prob ${prob:-0.5}"
2469         printf '%s\n' $comp
2470     done
2471 }
2472
2473 do_random(){
2474     action=$1
2475     shift
2476     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2477     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2478 }
2479
2480 for opt do
2481     optval="${opt#*=}"
2482     case "$opt" in
2483         --extra-ldflags=*)
2484             add_ldflags $optval
2485         ;;
2486         --extra-ldexeflags=*)
2487             add_ldexeflags $optval
2488         ;;
2489         --extra-libs=*)
2490             add_extralibs $optval
2491         ;;
2492         --disable-devices)
2493             disable $INDEV_LIST $OUTDEV_LIST
2494         ;;
2495         --enable-debug=*)
2496             debuglevel="$optval"
2497         ;;
2498         --disable-programs)
2499             disable $PROGRAM_LIST
2500         ;;
2501         --disable-everything)
2502             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2503         ;;
2504         --disable-all)
2505             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2506             disable $LIBRARY_LIST $PROGRAM_LIST doc
2507         ;;
2508         --enable-random|--disable-random)
2509             action=${opt%%-random}
2510             do_random ${action#--} $COMPONENT_LIST
2511         ;;
2512         --enable-random=*|--disable-random=*)
2513             action=${opt%%-random=*}
2514             do_random ${action#--} $optval
2515         ;;
2516         --enable-*=*|--disable-*=*)
2517             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2518             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2519             eval list=\$$(toupper $thing)_LIST
2520             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2521             $action $(filter "$name" $list)
2522         ;;
2523         --enable-avserver|--disable-avserver*)
2524             warn "avserver has been removed, the ${opt} option is only"\
2525                  "provided for compatibility and will be removed in the future"
2526         ;;
2527         --enable-?*|--disable-?*)
2528             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2529             if is_in $option $COMPONENT_LIST; then
2530                 test $action = disable && action=unset
2531                 eval $action \$$(toupper ${option%s})_LIST
2532             elif is_in $option $CMDLINE_SELECT; then
2533                 $action $option
2534             else
2535                 die_unknown $opt
2536             fi
2537         ;;
2538         --list-*)
2539             NAME="${opt#--list-}"
2540             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2541             NAME=${NAME%s}
2542             eval show_list $NAME \$$(toupper $NAME)_LIST
2543         ;;
2544         --help|-h) show_help
2545         ;;
2546         *)
2547             optname="${opt%%=*}"
2548             optname="${optname#--}"
2549             optname=$(echo "$optname" | sed 's/-/_/g')
2550             if is_in $optname $CMDLINE_SET; then
2551                 eval $optname='$optval'
2552             elif is_in $optname $CMDLINE_APPEND; then
2553                 append $optname "$optval"
2554             else
2555                 die_unknown $opt
2556             fi
2557         ;;
2558     esac
2559 done
2560
2561 for e in $env; do
2562     eval "export $e"
2563 done
2564
2565 disabled logging && logfile=/dev/null
2566
2567 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2568 set >> $logfile
2569
2570 case "$toolchain" in
2571     clang-asan)
2572         cc_default="clang"
2573         add_cflags  -fsanitize=address
2574         add_ldflags -fsanitize=address
2575     ;;
2576     clang-tsan)
2577         cc_default="clang"
2578         add_cflags  -fsanitize=thread -pie
2579         add_ldflags -fsanitize=thread -pie
2580     ;;
2581     clang-usan)
2582         cc_default="clang"
2583         add_cflags  -fsanitize=undefined -O1
2584         add_ldflags -fsanitize=undefined
2585     ;;
2586     gcc-asan)
2587         cc_default="gcc"
2588         add_cflags  -fsanitize=address
2589         add_ldflags -fsanitize=address
2590     ;;
2591     gcc-tsan)
2592         cc_default="gcc"
2593         add_cflags  -fsanitize=thread -pie -fPIC
2594         add_ldflags -fsanitize=thread -pie -fPIC
2595     ;;
2596     gcc-usan)
2597         cc_default="gcc"
2598         add_cflags  -fsanitize=undefined
2599         add_ldflags -fsanitize=undefined
2600     ;;
2601     valgrind-massif)
2602         target_exec_default="valgrind"
2603         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2604     ;;
2605     valgrind-memcheck)
2606         target_exec_default="valgrind"
2607         target_exec_args="--track-origins=yes --leak-check=full"
2608     ;;
2609     msvc)
2610         # Check whether the current MSVC version needs the C99 converter.
2611         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2612         # support enough of C99 to build libav. Default to the new
2613         # behaviour if the regexp was unable to match anything, since this
2614         # successfully parses the version number of existing supported
2615         # versions that require the converter (MSVC 2010 and 2012).
2616         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2617         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2618             cc_default="cl"
2619         else
2620             cc_default="c99wrap cl"
2621         fi
2622         ld_default="link"
2623         nm_default="dumpbin -symbols"
2624         ar_default="lib"
2625         target_os_default="win32"
2626         # Use a relative path for TMPDIR. This makes sure all the
2627         # ffconf temp files are written with a relative path, avoiding
2628         # issues with msys/win32 path conversion for MSVC parameters
2629         # such as -Fo<file> or -out:<file>.
2630         TMPDIR=.
2631     ;;
2632     icl)
2633         cc_default="icl"
2634         ld_default="xilink"
2635         nm_default="dumpbin -symbols"
2636         ar_default="xilib"
2637         target_os_default="win32"
2638         TMPDIR=.
2639     ;;
2640     gcov)
2641         add_cflags  -fprofile-arcs -ftest-coverage
2642         add_ldflags -fprofile-arcs -ftest-coverage
2643     ;;
2644     hardened)
2645         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2646         add_cflags   -fno-strict-overflow -fstack-protector-all
2647         add_ldflags  -Wl,-z,relro -Wl,-z,now
2648     ;;
2649     ?*)
2650         die "Unknown toolchain $toolchain"
2651     ;;
2652 esac
2653
2654 test -n "$cross_prefix" && enable cross_compile
2655
2656 if enabled cross_compile; then
2657     test -n "$arch" && test -n "$target_os" ||
2658         die "Must specify target arch and OS when cross-compiling"
2659 fi
2660
2661 ar_default="${cross_prefix}${ar_default}"
2662 cc_default="${cross_prefix}${cc_default}"
2663 nm_default="${cross_prefix}${nm_default}"
2664 pkg_config_default="${cross_prefix}${pkg_config_default}"
2665 ranlib="${cross_prefix}${ranlib}"
2666 strip="${cross_prefix}${strip}"
2667
2668 sysinclude_default="${sysroot}/usr/include"
2669
2670 set_default arch cc pkg_config sysinclude target_exec target_os
2671 enabled cross_compile || host_cc_default=$cc
2672 set_default host_cc
2673
2674 if ! $pkg_config --version >/dev/null 2>&1; then
2675     warn "$pkg_config not found, library detection may fail."
2676     pkg_config=false
2677 fi
2678
2679 exesuf() {
2680     case $1 in
2681         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2682     esac
2683 }
2684
2685 EXESUF=$(exesuf $target_os)
2686 HOSTEXESUF=$(exesuf $host_os)
2687
2688 # set temporary file name
2689 : ${TMPDIR:=$TEMPDIR}
2690 : ${TMPDIR:=$TMP}
2691 : ${TMPDIR:=/tmp}
2692
2693 if ! check_cmd mktemp -u XXXXXX; then
2694     # simple replacement for missing mktemp
2695     # NOT SAFE FOR GENERAL USE
2696     mktemp(){
2697         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2698     }
2699 fi
2700
2701 tmpfile(){
2702     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2703         (set -C; exec > $tmp) 2>/dev/null ||
2704         die "Unable to create temporary file in $TMPDIR."
2705     append TMPFILES $tmp
2706     eval $1=$tmp
2707 }
2708
2709 trap 'rm -f -- $TMPFILES' EXIT
2710
2711 tmpfile TMPASM .asm
2712 tmpfile TMPC   .c
2713 tmpfile TMPE   $EXESUF
2714 tmpfile TMPH   .h
2715 tmpfile TMPO   .o
2716 tmpfile TMPS   .S
2717 tmpfile TMPSH  .sh
2718 tmpfile TMPV   .ver
2719
2720 unset -f mktemp
2721
2722 chmod +x $TMPE
2723
2724 # make sure we can execute files in $TMPDIR
2725 cat > $TMPSH 2>> $logfile <<EOF
2726 #! /bin/sh
2727 EOF
2728 chmod +x $TMPSH >> $logfile 2>&1
2729 if ! $TMPSH >> $logfile 2>&1; then
2730     cat <<EOF
2731 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2732 variable to another directory and make sure that it is not mounted noexec.
2733 EOF
2734     die "Sanity test failed."
2735 fi
2736
2737 armasm_flags(){
2738     for flag; do
2739         case $flag in
2740             # Filter out MSVC cl.exe options from cflags that shouldn't
2741             # be passed to gas-preprocessor
2742             -M[TD]*)                                            ;;
2743             *)                  echo $flag                      ;;
2744         esac
2745    done
2746 }
2747
2748 ccc_flags(){
2749     for flag; do
2750         case $flag in
2751             -std=c99)           echo -c99                       ;;
2752             -mcpu=*)            echo -arch ${flag#*=}           ;;
2753             -mieee)             echo -ieee                      ;;
2754             -O*|-fast)          echo $flag                      ;;
2755             -fno-math-errno)    echo -assume nomath_errno       ;;
2756             -g)                 echo -g3                        ;;
2757             -Wall)              echo -msg_enable level2         ;;
2758             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2759             -Wl,*)              echo $flag                      ;;
2760             -f*|-W*)                                            ;;
2761             *)                  echo $flag                      ;;
2762         esac
2763    done
2764 }
2765
2766 cparser_flags(){
2767     for flag; do
2768         case $flag in
2769             -Wno-switch)             echo -Wno-switch-enum ;;
2770             -Wno-format-zero-length) ;;
2771             -Wdisabled-optimization) ;;
2772             -Wno-pointer-sign)       echo -Wno-other ;;
2773             *)                       echo $flag ;;
2774         esac
2775     done
2776 }
2777
2778 msvc_common_flags(){
2779     for flag; do
2780         case $flag in
2781             # In addition to specifying certain flags under the compiler
2782             # specific filters, they must be specified here as well or else the
2783             # generic catch all at the bottom will print the original flag.
2784             -Wall)                ;;
2785             -std=c99)             ;;
2786             # Common flags
2787             -fomit-frame-pointer) ;;
2788             -g)                   echo -Z7 ;;
2789             -fno-math-errno)      ;;
2790             -fno-common)          ;;
2791             -fno-signed-zeros)    ;;
2792             -fPIC)                ;;
2793             -mthumb)              ;;
2794             -march=*)             ;;
2795             -lz)                  echo zlib.lib ;;
2796             -lavifil32)           echo vfw32.lib ;;
2797             -lavicap32)           echo vfw32.lib user32.lib ;;
2798             -l*)                  echo ${flag#-l}.lib ;;
2799             -L*)                  echo -libpath:${flag#-L} ;;
2800             *)                    echo $flag ;;
2801         esac
2802     done
2803 }
2804
2805 msvc_flags(){
2806     msvc_common_flags "$@"
2807     for flag; do
2808         case $flag in
2809             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2810                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2811                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2812                                        -wd4273 -wd4554 -wd4701 ;;
2813         esac
2814     done
2815 }
2816
2817 icl_flags(){
2818     msvc_common_flags "$@"
2819     for flag; do
2820         case $flag in
2821             # Despite what Intel's documentation says -Wall, which is supported
2822             # on Windows, does enable remarks so disable them here.
2823             -Wall)                echo $flag -Qdiag-disable:remark ;;
2824             -std=c99)             echo -Qstd=c99 ;;
2825         esac
2826     done
2827 }
2828
2829 pgi_flags(){
2830     for flag; do
2831         case $flag in
2832             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2833             -fomit-frame-pointer) echo -Mnoframe ;;
2834             -g)                   echo -gopt ;;
2835             *)                    echo $flag ;;
2836         esac
2837     done
2838 }
2839
2840 suncc_flags(){
2841     for flag; do
2842         case $flag in
2843             -march=*|-mcpu=*)
2844                 case "${flag#*=}" in
2845                     native)                   echo -xtarget=native       ;;
2846                     v9|niagara)               echo -xarch=sparc          ;;
2847                     ultrasparc)               echo -xarch=sparcvis       ;;
2848                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2849                     i586|pentium)             echo -xchip=pentium        ;;
2850                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2851                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2852                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2853                     pentium4*)          echo -xtarget=pentium4           ;;
2854                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2855                     *-sse3)             echo -xarch=sse3                 ;;
2856                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2857                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2858                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2859                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2860                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2861                     k8|opteron|athlon64|athlon-fx)
2862                                                echo -xarch=sse2a         ;;
2863                     athlon*)                   echo -xarch=pentium_proa  ;;
2864                 esac
2865                 ;;
2866             -std=c99)             echo -xc99              ;;
2867             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2868             -fPIC)                echo -KPIC -xcode=pic32 ;;
2869             -W*,*)                echo $flag              ;;
2870             -f*-*|-W*|-mimpure-text)                      ;;
2871             -shared)              echo -G                 ;;
2872             *)                    echo $flag              ;;
2873         esac
2874     done
2875 }
2876
2877 tms470_flags(){
2878     for flag; do
2879         case $flag in
2880             -march=*|-mcpu=*)
2881                 case "${flag#*=}" in
2882                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2883                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2884                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2885                     armv6*|arm11*)          echo -mv=6   ;;
2886                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2887                                             echo -mv=5e  ;;
2888                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2889                 esac
2890                 ;;
2891             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2892             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2893             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2894             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2895             -msoft-float)   echo --float_support=vfplib       ;;
2896             -O[0-3]|-mf=*)  echo $flag                        ;;
2897             -g)             echo -g -mn                       ;;
2898             -pds=*)         echo $flag                        ;;
2899             -D*|-I*)        echo $flag                        ;;
2900             --gcc|--abi=*)  echo $flag                        ;;
2901             -me)            echo $flag                        ;;
2902         esac
2903     done
2904 }
2905
2906 probe_cc(){
2907     pfx=$1
2908     _cc=$2
2909
2910     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2911     unset _ld_o _ldflags _ld_lib _ld_path
2912     unset _depflags _DEPCMD _DEPFLAGS
2913     _flags_filter=echo
2914
2915     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2916         _type=llvm_gcc
2917         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2918         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2919         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2920         _cflags_speed='-O3'
2921         _cflags_size='-Os'
2922     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2923         _type=gcc
2924         gcc_version=$($_cc --version | head -n1)
2925         gcc_basever=$($_cc -dumpversion)
2926         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2927         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2928         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2929         if ! $_cc -dumpversion | grep -q '^2\.'; then
2930             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2931         fi
2932         _cflags_speed='-O3'
2933         _cflags_size='-Os'
2934     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2935         _type=icc
2936         _ident=$($_cc --version | head -n1)
2937         _depflags='-MMD'
2938         _cflags_speed='-O3'
2939         _cflags_size='-Os'
2940         _cflags_noopt='-O1'
2941     elif $_cc -v 2>&1 | grep -q xlc; then
2942         _type=xlc
2943         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2944         _cflags_speed='-O5'
2945         _cflags_size='-O5 -qcompact'
2946     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2947         _type=ccc
2948         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2949         _DEPFLAGS='-M'
2950         _cflags_speed='-fast'
2951         _cflags_size='-O1'
2952         _flags_filter=ccc_flags
2953     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2954         test -d "$sysroot" || die "No valid sysroot specified."
2955         _type=armcc
2956         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2957         armcc_conf="$PWD/armcc.conf"
2958         $_cc --arm_linux_configure                 \
2959              --arm_linux_config_file="$armcc_conf" \
2960              --configure_sysroot="$sysroot"        \
2961              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2962              die "Error creating armcc configuration file."
2963         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2964         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2965         as_default="${cross_prefix}gcc"
2966         _depflags='-MMD'
2967         _cflags_speed='-O3'
2968         _cflags_size='-Os'
2969     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2970         _type=tms470
2971         _ident=$($_cc -version | head -n1 | tr -s ' ')
2972         _flags='--gcc --abi=eabi -me'
2973         _cc_e='-ppl -fe=$@'
2974         _cc_o='-fe=$@'
2975         _depflags='-ppa -ppd=$(@:.o=.d)'
2976         _cflags_speed='-O3 -mf=5'
2977         _cflags_size='-O3 -mf=2'
2978         _flags_filter=tms470_flags
2979     elif $_cc -v 2>&1 | grep -q clang; then
2980         _type=clang
2981         _ident=$($_cc --version | head -n1)
2982         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2983         _cflags_speed='-O3'
2984         _cflags_size='-Os'
2985     elif $_cc -V 2>&1 | grep -q Sun; then
2986         _type=suncc
2987         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2988         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2989         _DEPFLAGS='-xM1 -xc99'
2990         _ldflags='-std=c99'
2991         _cflags_speed='-O5'
2992         _cflags_size='-O5 -xspace'
2993         _flags_filter=suncc_flags
2994     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2995         _type=pathscale
2996         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2997         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2998         _cflags_speed='-O2'
2999         _cflags_size='-Os'
3000         _flags_filter='filter_out -Wdisabled-optimization'
3001     elif $_cc -v 2>&1 | grep -q Open64; then
3002         _type=open64
3003         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3004         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3005         _cflags_speed='-O2'
3006         _cflags_size='-Os'
3007         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3008     elif $_cc -V 2>&1 | grep -q Portland; then
3009         _type=pgi
3010         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3011         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3012         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3013         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3014         _cflags_noopt="-O1"
3015         _flags_filter=pgi_flags
3016     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3017         _type=armasm
3018         _ident=$($_cc | head -n1)
3019         # 4509: "This form of conditional instruction is deprecated"
3020         _flags="-nologo -ignore 4509"
3021         _flags_filter=armasm_flags
3022     elif $_cc 2>&1 | grep -q Microsoft; then
3023         _type=msvc
3024         _ident=$($_cc 2>&1 | head -n1)
3025         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3026         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3027         _cflags_speed="-O2"
3028         _cflags_size="-O1"
3029         if $_cc 2>&1 | grep -q Linker; then
3030             _ld_o='-out:$@'
3031         else
3032             _ld_o='-Fe$@'
3033         fi
3034         _cc_o='-Fo$@'
3035         _cc_e='-P -Fi$@'
3036         _flags_filter=msvc_flags
3037         _ld_lib='lib%.a'
3038         _ld_path='-libpath:'
3039         _flags='-nologo'
3040         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3041     elif $_cc 2>&1 | grep -q Intel; then
3042         _type=icl
3043         _ident=$($_cc 2>&1 | head -n1)
3044         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3045         # Not only is O3 broken on 13.x+ but it is slower on all previous
3046         # versions (tested) as well.
3047         _cflags_speed="-O2"
3048         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3049         if $_cc 2>&1 | grep -q Linker; then
3050             _ld_o='-out:$@'
3051         else
3052             _ld_o='-Fe$@'
3053         fi
3054         _cc_o='-Fo$@'
3055         _cc_e='-P'
3056         _flags_filter=icl_flags
3057         _ld_lib='lib%.a'
3058         _ld_path='-libpath:'
3059         # -Qdiag-error to make icl error when seeing certain unknown arguments
3060         _flags='-nologo -Qdiag-error:4044,10157'
3061         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3062         # with MSVC which enables it by default.
3063         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3064     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3065         _type=cparser
3066         _ident=$($_cc --version | head -n1)
3067         _depflags='-MMD'
3068         _cflags_speed='-O4'
3069         _cflags_size='-O2'
3070         _flags_filter=cparser_flags
3071     fi
3072
3073     eval ${pfx}_type=\$_type
3074     eval ${pfx}_ident=\$_ident
3075 }
3076
3077 set_ccvars(){
3078     eval ${1}_C=\${_cc_c-\${${1}_C}}
3079     eval ${1}_E=\${_cc_e-\${${1}_E}}
3080     eval ${1}_O=\${_cc_o-\${${1}_O}}
3081
3082     if [ -n "$_depflags" ]; then
3083         eval ${1}_DEPFLAGS=\$_depflags
3084     else
3085         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3086         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3087         eval DEP${1}FLAGS=\$_flags
3088     fi
3089 }
3090
3091 probe_cc cc "$cc"
3092 cflags_filter=$_flags_filter
3093 cflags_speed=$_cflags_speed
3094 cflags_size=$_cflags_size
3095 cflags_noopt=$_cflags_noopt
3096 add_cflags $_flags $_cflags
3097 cc_ldflags=$_ldflags
3098 set_ccvars CC
3099
3100 probe_cc hostcc "$host_cc"
3101 host_cflags_filter=$_flags_filter
3102 add_host_cflags  $_flags $_cflags
3103 set_ccvars HOSTCC
3104
3105 test -n "$cc_type" && enable $cc_type ||
3106     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3107
3108 : ${as_default:=$cc}
3109 : ${dep_cc_default:=$cc}
3110 : ${ld_default:=$cc}
3111 : ${host_ld_default:=$host_cc}
3112 set_default ar as dep_cc ld host_ld
3113
3114 probe_cc as "$as"
3115 asflags_filter=$_flags_filter
3116 add_asflags $_flags $_cflags
3117 set_ccvars AS
3118
3119 probe_cc ld "$ld"
3120 ldflags_filter=$_flags_filter
3121 add_ldflags $_flags $_ldflags
3122 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3123 LD_O=${_ld_o-$LD_O}
3124 LD_LIB=${_ld_lib-$LD_LIB}
3125 LD_PATH=${_ld_path-$LD_PATH}
3126
3127 probe_cc hostld "$host_ld"
3128 host_ldflags_filter=$_flags_filter
3129 add_host_ldflags $_flags $_ldflags
3130 HOSTLD_O=${_ld_o-$HOSTLD_O}
3131
3132 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3133     probe_cc depcc "$dep_cc"
3134     CCDEP=${_DEPCMD:-$DEPCMD}
3135     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3136     DEPCCFLAGS=$_flags
3137 fi
3138
3139 if $ar 2>&1 | grep -q Microsoft; then
3140     arflags="-nologo"
3141     ar_o='-out:$@'
3142 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3143     arflags="rq"
3144     ar_o='$@'
3145 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3146     arflags='-Xany -r -c'
3147     ar_o='$@'
3148 else
3149     arflags="rc"
3150     ar_o='$@'
3151 fi
3152
3153 add_cflags $extra_cflags
3154 add_asflags $extra_cflags
3155
3156 if test -n "$sysroot"; then
3157     case "$cc_type" in
3158         gcc|llvm_gcc|clang)
3159             add_cppflags --sysroot="$sysroot"
3160             add_ldflags --sysroot="$sysroot"
3161         ;;
3162         tms470)
3163             add_cppflags -I"$sysinclude"
3164             add_ldflags  --sysroot="$sysroot"
3165         ;;
3166     esac
3167 fi
3168
3169 if test "$cpu" = host; then
3170     enabled cross_compile &&
3171         die "--cpu=host makes no sense when cross-compiling."
3172
3173     case "$cc_type" in
3174         gcc|llvm_gcc)
3175             check_native(){
3176                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3177                 sed -n "/cc1.*$1=/{
3178                             s/.*$1=\\([^ ]*\\).*/\\1/
3179                             p
3180                             q
3181                         }" $TMPE
3182             }
3183             cpu=$(check_native -march || check_native -mcpu)
3184         ;;
3185     esac
3186
3187     test "${cpu:-host}" = host &&
3188         die "--cpu=host not supported with compiler $cc"
3189 fi
3190
3191 # Deal with common $arch aliases
3192 case "$arch" in
3193     aarch64|arm64)
3194         arch="aarch64"
3195     ;;
3196     arm*)
3197         arch="arm"
3198     ;;
3199     mips*|IP*)
3200         arch="mips"
3201     ;;
3202     parisc*|hppa*)
3203         arch="parisc"
3204     ;;
3205     "Power Macintosh"|ppc*|powerpc*)
3206         arch="ppc"
3207     ;;
3208     s390|s390x)
3209         arch="s390"
3210     ;;
3211     sh4|sh)
3212         arch="sh4"
3213     ;;
3214     sun4u|sparc*)
3215         arch="sparc"
3216     ;;
3217     tilegx|tile-gx)
3218         arch="tilegx"
3219     ;;
3220     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3221         arch="x86"
3222     ;;
3223 esac
3224
3225 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3226 enable $arch
3227
3228 # Add processor-specific flags
3229 if enabled aarch64; then
3230
3231     case $cpu in
3232         armv*)
3233             cpuflags="-march=$cpu"
3234         ;;
3235         *)
3236             cpuflags="-mcpu=$cpu"
3237         ;;
3238     esac
3239
3240 elif enabled alpha; then
3241
3242     cpuflags="-mcpu=$cpu"
3243
3244 elif enabled arm; then
3245
3246     check_arm_arch() {
3247         check_cpp_condition stddef.h \
3248             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3249             $cpuflags
3250     }
3251
3252     probe_arm_arch() {
3253         if   check_arm_arch 4;        then echo armv4;
3254         elif check_arm_arch 4T;       then echo armv4t;
3255         elif check_arm_arch 5;        then echo armv5;
3256         elif check_arm_arch 5E;       then echo armv5e;
3257         elif check_arm_arch 5T;       then echo armv5t;
3258         elif check_arm_arch 5TE;      then echo armv5te;
3259         elif check_arm_arch 5TEJ;     then echo armv5te;
3260         elif check_arm_arch 6;        then echo armv6;
3261         elif check_arm_arch 6J;       then echo armv6j;
3262         elif check_arm_arch 6K;       then echo armv6k;
3263         elif check_arm_arch 6Z;       then echo armv6z;
3264         elif check_arm_arch 6ZK;      then echo armv6zk;
3265         elif check_arm_arch 6T2;      then echo armv6t2;
3266         elif check_arm_arch 7;        then echo armv7;
3267         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3268         elif check_arm_arch 7S;       then echo armv7-a;
3269         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3270         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3271         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3272         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3273         fi
3274     }
3275
3276     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3277
3278     case $cpu in
3279         armv*)
3280             cpuflags="-march=$cpu"
3281             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3282         ;;
3283         *)
3284             cpuflags="-mcpu=$cpu"
3285             case $cpu in
3286                 cortex-a*)                               subarch=armv7a  ;;
3287                 cortex-r*)                               subarch=armv7r  ;;
3288                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3289                 arm11*)                                  subarch=armv6   ;;
3290                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3291                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3292                 *)                             subarch=$(probe_arm_arch) ;;
3293             esac
3294         ;;
3295     esac
3296
3297     case "$subarch" in
3298         armv5t*)    enable fast_clz                ;;
3299         armv[6-8]*) enable fast_clz fast_unaligned ;;
3300     esac
3301
3302 elif enabled avr32; then
3303
3304     case $cpu in
3305         ap7[02]0[0-2])
3306             subarch="avr32_ap"
3307             cpuflags="-mpart=$cpu"
3308         ;;
3309         ap)
3310             subarch="avr32_ap"
3311             cpuflags="-march=$cpu"
3312         ;;
3313         uc3[ab]*)
3314             subarch="avr32_uc"
3315             cpuflags="-mcpu=$cpu"
3316         ;;
3317         uc)
3318             subarch="avr32_uc"
3319             cpuflags="-march=$cpu"
3320         ;;
3321     esac
3322
3323 elif enabled bfin; then
3324
3325     cpuflags="-mcpu=$cpu"
3326
3327 elif enabled mips; then
3328
3329     cpuflags="-march=$cpu"
3330
3331 elif enabled ppc; then
3332
3333     disable ldbrx
3334
3335     case $(tolower $cpu) in
3336         601|ppc601|powerpc601)
3337             cpuflags="-mcpu=601"
3338             disable altivec
3339         ;;
3340         603*|ppc603*|powerpc603*)
3341             cpuflags="-mcpu=603"
3342             disable altivec
3343         ;;
3344         604*|ppc604*|powerpc604*)
3345             cpuflags="-mcpu=604"
3346             disable altivec
3347         ;;
3348         g3|75*|ppc75*|powerpc75*)
3349             cpuflags="-mcpu=750"
3350             disable altivec
3351         ;;
3352         g4|745*|ppc745*|powerpc745*)
3353             cpuflags="-mcpu=7450"
3354             disable vsx
3355         ;;
3356         74*|ppc74*|powerpc74*)
3357             cpuflags="-mcpu=7400"
3358             disable vsx
3359         ;;
3360         g5|970|ppc970|powerpc970)
3361             cpuflags="-mcpu=970"
3362             disable vsx
3363         ;;
3364         power[3-6]*)
3365             cpuflags="-mcpu=$cpu"
3366             disable vsx
3367         ;;
3368         power[7-8]*)
3369             cpuflags="-mcpu=$cpu"
3370             enable ldbrx
3371         ;;
3372         cell)
3373             cpuflags="-mcpu=cell"
3374             enable ldbrx
3375             disable vsx
3376         ;;
3377         e500mc)
3378             cpuflags="-mcpu=e500mc"
3379             disable altivec
3380         ;;
3381         e500v2)
3382             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3383             disable altivec
3384             disable dcbzl
3385         ;;
3386         e500)
3387             cpuflags="-mcpu=8540 -mhard-float"
3388             disable altivec
3389             disable dcbzl
3390         ;;
3391     esac
3392
3393 elif enabled sparc; then
3394
3395     case $cpu in
3396         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3397             cpuflags="-mcpu=$cpu"
3398         ;;
3399         ultrasparc*|niagara[234])
3400             cpuflags="-mcpu=$cpu"
3401         ;;
3402     esac
3403
3404 elif enabled x86; then
3405
3406     case $cpu in
3407         i[345]86|pentium)
3408             cpuflags="-march=$cpu"
3409             disable i686
3410             disable mmx
3411         ;;
3412         # targets that do NOT support nopl and conditional mov (cmov)
3413         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3414             cpuflags="-march=$cpu"
3415             disable i686
3416         ;;
3417         # targets that do support nopl and conditional mov (cmov)
3418         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3419             cpuflags="-march=$cpu"
3420             enable i686
3421             enable fast_cmov
3422         ;;
3423         # targets that do support conditional mov but on which it's slow
3424         pentium4|pentium4m|prescott|nocona)
3425             cpuflags="-march=$cpu"
3426             enable i686
3427             disable fast_cmov
3428         ;;
3429     esac
3430
3431 fi
3432
3433 if [ "$cpu" != generic ]; then
3434     add_cflags  $cpuflags
3435     add_asflags $cpuflags
3436 fi
3437
3438 # compiler sanity check
3439 check_exec <<EOF
3440 int main(void){ return 0; }
3441 EOF
3442 if test "$?" != 0; then
3443     echo "$cc is unable to create an executable file."
3444     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3445         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3446         echo "Only do this if you know what cross compiling means."
3447     fi
3448     die "C compiler test failed."
3449 fi
3450
3451 add_cppflags -D_ISOC99_SOURCE
3452 check_cflags -std=c99
3453 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3454 #include <stdlib.h>
3455 EOF
3456 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3457 #include <stdlib.h>
3458 EOF
3459
3460 add_host_cppflags -D_ISOC99_SOURCE
3461 check_host_cflags -std=c99
3462 check_host_cflags -Wall
3463 check_host_cflags -O3
3464
3465 check_64bit(){
3466     arch32=$1
3467     arch64=$2
3468     expr=$3
3469     check_code cc "" "int test[2*($expr) - 1]" &&
3470         subarch=$arch64 || subarch=$arch32
3471 }
3472
3473 case "$arch" in
3474     aarch64|alpha|ia64)
3475         spic=$shared
3476     ;;
3477     mips)
3478         check_64bit mips mips64 '_MIPS_SIM > 1'
3479         spic=$shared
3480     ;;
3481     parisc)
3482         check_64bit parisc parisc64 'sizeof(void *) > 4'
3483         spic=$shared
3484     ;;
3485     ppc)
3486         check_64bit ppc ppc64 'sizeof(void *) > 4'
3487         spic=$shared
3488     ;;
3489     s390)
3490         check_64bit s390 s390x 'sizeof(void *) > 4'
3491         spic=$shared
3492     ;;
3493     sparc)
3494         check_64bit sparc sparc64 'sizeof(void *) > 4'
3495         spic=$shared
3496     ;;
3497     x86)
3498         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3499         if test "$subarch" = "x86_64"; then
3500             spic=$shared
3501         fi
3502     ;;
3503 esac
3504
3505 enable $subarch
3506 enabled spic && enable_weak pic
3507
3508 # OS specific
3509 case $target_os in
3510     aix)
3511         SHFLAGS=-shared
3512         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3513         enabled shared && add_ldflags -Wl,-brtl
3514         ;;
3515     android)
3516         disable symver
3517         enable section_data_rel_ro
3518         SLIB_INSTALL_NAME='$(SLIBNAME)'
3519         SLIB_INSTALL_LINKS=
3520         # soname not set on purpose
3521         SHFLAGS=-shared
3522         ;;
3523     haiku)
3524         prefix_default="/boot/common"
3525         network_extralibs="-lnetwork"
3526         host_libs=
3527         ;;
3528     sunos)
3529         SHFLAGS='-shared -Wl,-h,$$(@F)'
3530         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3531         network_extralibs="-lsocket -lnsl"
3532         # When using suncc to build, the Solaris linker will mark
3533         # an executable with each instruction set encountered by
3534         # the Solaris assembler.  As our libraries contain their own
3535         # guards for processor-specific code, instead suppress
3536         # generation of the HWCAPS ELF section on Solaris x86 only.
3537         enabled_all suncc x86 &&
3538             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3539             add_ldflags -Wl,-M,mapfile
3540         nm_default='nm -P -g'
3541         ;;
3542     netbsd)
3543         disable symver
3544         oss_indev_extralibs="-lossaudio"
3545         oss_outdev_extralibs="-lossaudio"
3546         ;;
3547     openbsd|bitrig)
3548         disable symver
3549         SHFLAGS='-shared'
3550         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3551         SLIB_INSTALL_LINKS=
3552         oss_indev_extralibs="-lossaudio"
3553         oss_outdev_extralibs="-lossaudio"
3554         ;;
3555     dragonfly)
3556         disable symver
3557         ;;
3558     freebsd)
3559         ;;
3560     bsd/os)
3561         add_extralibs -lpoll -lgnugetopt
3562         ;;
3563     darwin)
3564         enabled ppc && add_asflags -force_cpusubtype_ALL
3565         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3566         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3567         add_ldflags -Wl,-dynamic,-search_paths_first
3568         SLIBSUF=".dylib"
3569         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3570         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3571         objformat="macho"
3572         enabled x86_64 && objformat="macho64"
3573         enabled_any pic shared ||
3574             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3575         ;;
3576     mingw32*)
3577         if test $target_os = "mingw32ce"; then
3578             disable network
3579         else
3580             target_os=mingw32
3581         fi
3582         LIBTARGET=i386
3583         if enabled x86_64; then
3584             LIBTARGET="i386:x86-64"
3585         elif enabled arm; then
3586             LIBTARGET=arm-wince
3587         fi
3588         check_ldflags -Wl,--nxcompat
3589         check_ldflags -Wl,--dynamicbase
3590         shlibdir_default="$bindir_default"
3591         SLIBPREF=""
3592         SLIBSUF=".dll"
3593         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3594         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3595         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3596         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3597         SLIB_INSTALL_LINKS=
3598         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3599         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3600         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3601         objformat="win32"
3602         dlltool="${cross_prefix}dlltool"
3603         ranlib=:
3604         enable dos_paths
3605         ;;
3606     win32|win64)
3607         disable symver
3608         if enabled shared; then
3609             # Link to the import library instead of the normal static library
3610             # for shared libs.
3611             LD_LIB='%.lib'
3612             # Cannot build both shared and static libs with MSVC or icl.
3613             disable static
3614         fi
3615         shlibdir_default="$bindir_default"
3616         SLIBPREF=""
3617         SLIBSUF=".dll"
3618         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3619         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3620         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3621         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3622         SLIB_INSTALL_LINKS=
3623         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3624         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3625         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3626         objformat="win32"
3627         ranlib=:
3628         enable dos_paths
3629         ;;
3630     cygwin*)
3631         target_os=cygwin
3632         shlibdir_default="$bindir_default"
3633         SLIBPREF="cyg"
3634         SLIBSUF=".dll"
3635         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3636         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3637         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3638         SLIB_INSTALL_LINKS=
3639         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3640         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3641         objformat="win32"
3642         enable dos_paths
3643         ;;
3644     *-dos|freedos|opendos)
3645         network_extralibs="-lsocket"
3646         objformat="coff"
3647         enable dos_paths
3648         add_cppflags -U__STRICT_ANSI__
3649         ;;
3650     linux)
3651         enable dv1394
3652         enable section_data_rel_ro
3653         ;;
3654     irix*)
3655         target_os=irix
3656         ranlib="echo ignoring ranlib"
3657         ;;
3658     os/2*)
3659         ln_s="cp -f"
3660         objformat="aout"
3661         add_cppflags -D_GNU_SOURCE
3662         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3663         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3664         LIBSUF="_s.a"
3665         SLIBPREF=""
3666         SLIBSUF=".dll"
3667         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3668         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3669         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3670             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3671             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3672             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3673             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3674         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3675             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3676         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3677         enable dos_paths
3678         ;;
3679     gnu/kfreebsd)
3680         add_cppflags -D_BSD_SOURCE
3681         ;;
3682     gnu)
3683         ;;
3684     qnx)
3685         add_cppflags -D_QNX_SOURCE
3686         network_extralibs="-lsocket"
3687         ;;
3688     symbian)
3689         SLIBSUF=".dll"
3690         enable dos_paths
3691         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3692         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3693         add_ldflags -Wl,--target1-abs,--no-undefined \
3694                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3695                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3696         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3697                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3698                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3699         ;;
3700     osf1)
3701         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3702         ;;
3703     minix)
3704         ;;
3705     plan9)
3706         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3707                      -D_REENTRANT_SOURCE        \
3708                      -D_RESEARCH_SOURCE         \
3709                      -DFD_SETSIZE=96            \
3710                      -DHAVE_SOCK_OPTS
3711         add_compat strtod.o strtod=avpriv_strtod
3712         network_extralibs='-lbsd'
3713         exeobjs=compat/plan9/main.o
3714         cp_f='cp'
3715         ;;
3716     none)
3717         ;;
3718     *)
3719         die "Unknown OS '$target_os'."
3720         ;;
3721 esac
3722
3723 # determine libc flavour
3724
3725 probe_libc(){
3726     pfx=$1
3727     pfx_no_=${pfx%_}
3728     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3729     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3730         eval ${pfx}libc_type=uclibc
3731         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3732     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3733         eval ${pfx}libc_type=glibc
3734         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3735     # MinGW headers can be installed on Cygwin, so check for newlib first.
3736     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3737         eval ${pfx}libc_type=newlib
3738         add_${pfx}cppflags -U__STRICT_ANSI__
3739     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3740     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3741         eval ${pfx}libc_type=mingw64
3742         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3743         eval test \$${pfx_no_}cc_type = "gcc" &&
3744             add_${pfx}cppflags -D__printf__=__gnu_printf__
3745     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3746          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3747         eval ${pfx}libc_type=mingw32
3748         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3749             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3750             die "ERROR: MinGW32 runtime version must be >= 3.15."
3751         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3752         eval test \$${pfx_no_}cc_type = "gcc" &&
3753             add_${pfx}cppflags -D__printf__=__gnu_printf__
3754     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3755         eval ${pfx}libc_type=msvcrt
3756         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3757             if [ "$pfx" = host_ ]; then
3758                 add_host_cppflags -Dsnprintf=_snprintf
3759             else
3760                 add_compat strtod.o strtod=avpriv_strtod
3761                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3762                                              _snprintf=avpriv_snprintf  \
3763                                              vsnprintf=avpriv_vsnprintf
3764             fi
3765         fi
3766         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3767         # 0x601 by default unless something else is set by the user.
3768         # This can easily lead to us detecting functions only present
3769         # in such new versions and producing binaries requiring windows 7.0.
3770         # Therefore explicitly set the default to XP unless the user has
3771         # set something else on the command line.
3772         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3773             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3774     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3775         eval ${pfx}libc_type=klibc
3776     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3777         eval ${pfx}libc_type=bionic
3778     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3779         eval ${pfx}libc_type=solaris
3780         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3781     else
3782         eval ${pfx}libc_type=default
3783         add_${pfx}cppflags -D_DEFAULT_SOURCE
3784     fi
3785 }
3786
3787 probe_libc
3788 test -n "$libc_type" && enable libc_$libc_type
3789 probe_libc host_
3790 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3791
3792 case $libc_type in
3793     bionic)
3794         add_compat strtod.o strtod=avpriv_strtod
3795         ;;
3796 esac
3797
3798 # hacks for compiler/libc/os combinations
3799
3800 if enabled_all tms470 libc_glibc; then
3801     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3802     add_cppflags -D__USER_LABEL_PREFIX__=
3803     add_cppflags -D__builtin_memset=memset
3804     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3805     add_cflags   -pds=48    # incompatible redefinition of macro
3806 fi
3807
3808 if enabled_all ccc libc_glibc; then
3809     add_ldflags -Wl,-z,now  # calls to libots crash without this
3810 fi
3811
3812 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3813     add_cppflags '-I\$(SRC_PATH)/compat/float'
3814
3815 esc(){
3816     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3817 }
3818
3819 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3820
3821 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3822
3823 set_default $PATHS_LIST
3824 set_default nm
3825
3826 # we need to build at least one lib type
3827 if ! enabled_any static shared; then
3828     cat <<EOF
3829 At least one library type must be built.
3830 Specify --enable-static to build the static libraries or --enable-shared to
3831 build the shared libraries as well. To only build the shared libraries specify
3832 --disable-static in addition to --enable-shared.
3833 EOF
3834     exit 1;
3835 fi
3836
3837 die_license_disabled() {
3838     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3839 }
3840
3841 die_license_disabled gpl libcdio
3842 die_license_disabled gpl libx264
3843 die_license_disabled gpl libx265
3844 die_license_disabled gpl libxavs
3845 die_license_disabled gpl libxvid
3846 die_license_disabled gpl x11grab
3847
3848 die_license_disabled nonfree libfaac
3849 die_license_disabled nonfree libfdk_aac
3850 die_license_disabled nonfree nvenc
3851 die_license_disabled nonfree openssl
3852
3853 die_license_disabled version3 libopencore_amrnb
3854 die_license_disabled version3 libopencore_amrwb
3855 die_license_disabled version3 libvo_aacenc
3856 die_license_disabled version3 libvo_amrwbenc
3857
3858 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3859
3860 disabled optimizations || check_cflags -fomit-frame-pointer
3861
3862 enable_weak_pic() {
3863     disabled pic && return
3864     enable pic
3865     add_cppflags -DPIC
3866     case "$target_os" in
3867     mingw*|cygwin*)
3868         ;;
3869     *)
3870         add_cflags -fPIC
3871         ;;
3872     esac
3873     add_asflags  -fPIC
3874 }
3875
3876 enabled pic && enable_weak_pic
3877
3878 check_cc <<EOF || die "Symbol mangling check failed."
3879 int ff_extern;
3880 EOF
3881 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3882 extern_prefix=${sym%%ff_extern*}
3883
3884 check_cc <<EOF && enable_weak inline_asm
3885 void foo(void) { __asm__ volatile ("" ::); }
3886 EOF
3887
3888 _restrict=
3889 for restrict_keyword in restrict __restrict__ __restrict; do
3890     check_cc <<EOF && _restrict=$restrict_keyword && break
3891 void foo(char * $restrict_keyword p);
3892 EOF
3893 done
3894
3895 check_cc <<EOF && enable pragma_deprecated
3896 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3897 EOF
3898
3899 check_cc <<EOF && enable attribute_packed
3900 struct { int x; } __attribute__((packed)) x;
3901 EOF
3902
3903 check_cc <<EOF && enable attribute_may_alias
3904 union { int x; } __attribute__((may_alias)) x;
3905 EOF
3906
3907 check_cc <<EOF || die "endian test failed"
3908 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3909 EOF
3910 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3911
3912 check_gas() {
3913     log "check_gas using '$as' as AS"
3914     # :vararg is used on aarch64, arm and ppc altivec
3915     check_as <<EOF || return 1
3916 .macro m n, y:vararg=0
3917 \n: .int \y
3918 .endm
3919 m x
3920 EOF
3921     # .altmacro is only used in arm asm
3922     ! enabled arm || check_as <<EOF || return 1
3923 .altmacro
3924 EOF
3925     enable gnu_as
3926     return 0
3927 }
3928
3929 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3930     nogas=:
3931     enabled_any arm aarch64 && nogas=die
3932     enabled_all ppc altivec && nogas=warn
3933     as_noop=-v
3934
3935     case $as_type in
3936         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3937         gcc)  gaspp_as_type=gas ;;
3938         *)    gaspp_as_type=$as_type ;;
3939     esac
3940
3941     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3942
3943     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3944         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3945
3946     if ! check_gas ; then
3947         as=${gas:=$as}
3948         check_gas || \
3949             $nogas "GNU assembler not found, install/update gas-preprocessor"
3950     fi
3951
3952     check_as <<EOF && enable as_func
3953 .func test
3954 .endfunc
3955 EOF
3956 fi
3957
3958 check_inline_asm inline_asm_labels '"1:\n"'
3959
3960 if enabled aarch64; then
3961     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3962     # internal assembler in clang 3.3 does not support this instruction
3963     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3964     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3965
3966     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3967
3968 elif enabled alpha; then
3969
3970     check_cflags -mieee
3971
3972 elif enabled arm; then
3973
3974     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3975     enabled thumb && check_cflags -mthumb || check_cflags -marm
3976
3977     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3978         enable vfp_args
3979     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3980         case "${cross_prefix:-$cc}" in
3981             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3982             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3983 __asm__ (".eabi_attribute 28, 1");
3984 int main(void) { return 0; }
3985 EOF
3986         esac
3987         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3988     fi
3989
3990     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3991     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3992     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3993     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3994     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3995     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3996
3997     [ $target_os = linux ] || [ $target_os = android ] ||
3998         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3999             $ARCH_EXT_LIST_ARM
4000
4001     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4002
4003     check_as <<EOF && enable as_dn_directive
4004 ra .dn d0.i16
4005 .unreq ra
4006 EOF
4007
4008     # llvm's integrated assembler supports .object_arch from llvm 3.5
4009     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4010 .object_arch armv4
4011 EOF
4012
4013     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4014
4015 elif enabled mips; then
4016
4017     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4018
4019 elif enabled parisc; then
4020
4021     if enabled gcc; then
4022         case $($cc -dumpversion) in
4023             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4024         esac
4025     fi
4026
4027 elif enabled ppc; then
4028
4029     enable local_aligned_8 local_aligned_16
4030
4031     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4032     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4033     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4034     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4035
4036     # AltiVec flags: The FSF version of GCC differs from the Apple version
4037     if enabled altivec; then
4038         check_cflags -maltivec -mabi=altivec &&
4039         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4040         check_cflags -faltivec
4041
4042         # check if our compiler supports Motorola AltiVec C API
4043         check_cc <<EOF || disable altivec
4044 $inc_altivec_h
4045 int main(void) {
4046     vector signed int v1 = (vector signed int) { 0 };
4047     vector signed int v2 = (vector signed int) { 1 };
4048     v1 = vec_add(v1, v2);
4049     return 0;
4050 }
4051 EOF
4052
4053         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4054     fi
4055
4056     if enabled vsx; then
4057         check_cflags -mvsx &&
4058         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4059     fi
4060
4061     if enabled power8; then