ce4e6ccb5f912f8273a0975f4ec25722c2e3b63c
[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     flacdsp
1592     fmtconvert
1593     gcrypt
1594     gmp
1595     golomb
1596     gplv3
1597     h263dsp
1598     h264chroma
1599     h264dsp
1600     h264pred
1601     h264qpel
1602     hpeldsp
1603     huffman
1604     huffyuvdsp
1605     huffyuvencdsp
1606     idctdsp
1607     iirfilter
1608     imdct15
1609     intrax8
1610     ividsp
1611     jpegtables
1612     libx262
1613     lgplv3
1614     lpc
1615     me_cmp
1616     mpeg_er
1617     mpegaudio
1618     mpegaudiodsp
1619     mpegvideo
1620     mpegvideoenc
1621     mss34dsp
1622     pixblockdsp
1623     qpeldsp
1624     qsv
1625     qsvdec
1626     qsvenc
1627     rangecoder
1628     riffdec
1629     riffenc
1630     rtpdec
1631     rtpenc_chain
1632     sinewin
1633     snappy
1634     startcode
1635     texturedsp
1636     texturedspenc
1637     tpeldsp
1638     videodsp
1639     vp3dsp
1640     wma_freqs
1641 "
1642
1643 CMDLINE_SELECT="
1644     $ARCH_EXT_LIST
1645     $CONFIG_LIST
1646     $HAVE_LIST_CMDLINE
1647     $THREADS_LIST
1648     asm
1649     cross_compile
1650     debug
1651     extra_warnings
1652     logging
1653     lto
1654     optimizations
1655     rpath
1656 "
1657
1658 PATHS_LIST="
1659     bindir
1660     datadir
1661     docdir
1662     incdir
1663     libdir
1664     mandir
1665     prefix
1666     shlibdir
1667 "
1668
1669 CMDLINE_SET="
1670     $PATHS_LIST
1671     ar
1672     arch
1673     as
1674     build_suffix
1675     cc
1676     cpu
1677     cross_prefix
1678     dep_cc
1679     env
1680     extra_version
1681     host_cc
1682     host_cflags
1683     host_ld
1684     host_ldflags
1685     host_libs
1686     host_os
1687     ld
1688     logfile
1689     malloc_prefix
1690     nm
1691     optflags
1692     pkg_config
1693     pkg_config_flags
1694     random_seed
1695     samples
1696     sysinclude
1697     sysroot
1698     target_exec
1699     target_os
1700     target_path
1701     target_samples
1702     toolchain
1703 "
1704
1705 CMDLINE_APPEND="
1706     extra_cflags
1707     host_cppflags
1708 "
1709
1710 # code dependency declarations
1711
1712 # architecture extensions
1713
1714 armv5te_deps="arm"
1715 armv6_deps="arm"
1716 armv6t2_deps="arm"
1717 armv8_deps="aarch64"
1718 neon_deps_any="aarch64 arm"
1719 intrinsics_neon_deps="neon"
1720 vfp_deps_any="aarch64 arm"
1721 vfpv3_deps="vfp"
1722
1723 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1724
1725 altivec_deps="ppc"
1726 ppc4xx_deps="ppc"
1727 vsx_deps="altivec"
1728 power8_deps="vsx"
1729
1730 cpunop_deps="i686"
1731 x86_64_select="i686"
1732 x86_64_suggest="fast_cmov"
1733
1734 amd3dnow_deps="mmx"
1735 amd3dnowext_deps="amd3dnow"
1736 i686_deps="x86"
1737 mmx_deps="x86"
1738 mmxext_deps="mmx"
1739 sse_deps="mmxext"
1740 sse2_deps="sse"
1741 sse3_deps="sse2"
1742 ssse3_deps="sse3"
1743 sse4_deps="ssse3"
1744 sse42_deps="sse4"
1745 avx_deps="sse42"
1746 xop_deps="avx"
1747 fma3_deps="avx"
1748 fma4_deps="avx"
1749 avx2_deps="avx"
1750
1751 mmx_external_deps="yasm"
1752 mmx_inline_deps="inline_asm"
1753 mmx_suggest="mmx_external mmx_inline"
1754
1755 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1756     eval dep=\$${ext}_deps
1757     eval ${ext}_external_deps='"${dep}_external"'
1758     eval ${ext}_inline_deps='"${dep}_inline"'
1759     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1760 done
1761
1762 aligned_stack_if_any="aarch64 ppc x86"
1763 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1764 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1765 fast_unaligned_if_any="aarch64 ppc x86"
1766 simd_align_16_if_any="altivec neon sse"
1767
1768 # system capabilities
1769 symver_if_any="symver_asm_label symver_gnu_asm"
1770 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1771
1772 # threading support
1773 atomics_gcc_if="sync_val_compare_and_swap"
1774 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1775 atomics_win32_if="MemoryBarrier"
1776 atomics_native_if_any="$ATOMICS_LIST"
1777 w32threads_deps="atomics_native"
1778 threads_if_any="$THREADS_LIST"
1779
1780 # subsystems
1781 dct_select="rdft"
1782 error_resilience_select="me_cmp"
1783 faandct_deps="faan fdctdsp"
1784 faanidct_deps="faan idctdsp"
1785 intrax8_select="error_resilience"
1786 mdct_select="fft"
1787 rdft_select="fft"
1788 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1789 mpeg_er_select="error_resilience"
1790 mpegaudio_select="mpegaudiodsp"
1791 mpegaudiodsp_select="dct"
1792 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1793 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1794 nvenc_deps_any="dlopen LoadLibrary"
1795 nvenc_extralibs='$ldl'
1796 qsvdec_select="qsv"
1797 qsvenc_select="qsv"
1798
1799 # decoders / encoders
1800 aac_decoder_select="imdct15 mdct sinewin"
1801 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1802 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1803 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1804 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1805 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1806 aic_decoder_select="golomb idctdsp"
1807 alac_encoder_select="lpc"
1808 als_decoder_select="bswapdsp"
1809 amrnb_decoder_select="lsp"
1810 amrwb_decoder_select="lsp"
1811 amv_decoder_select="sp5x_decoder"
1812 ape_decoder_select="bswapdsp"
1813 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1814 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1815 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1816 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1817 atrac1_decoder_select="mdct sinewin"
1818 atrac3_decoder_select="mdct"
1819 atrac3p_decoder_select="mdct sinewin"
1820 bink_decoder_select="blockdsp hpeldsp"
1821 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1822 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1823 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1824 cllc_decoder_select="bswapdsp"
1825 comfortnoise_encoder_select="lpc"
1826 cook_decoder_select="audiodsp mdct sinewin"
1827 cscd_decoder_select="lzo"
1828 cscd_decoder_suggest="zlib"
1829 dca_decoder_select="fmtconvert mdct"
1830 dds_decoder_select="texturedsp"
1831 dnxhd_decoder_select="blockdsp idctdsp"
1832 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1833 dvvideo_decoder_select="dvprofile idctdsp"
1834 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1835 dxa_decoder_deps="zlib"
1836 eac3_decoder_select="ac3_decoder"
1837 eac3_encoder_select="ac3_encoder"
1838 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1839 eatgq_decoder_select="aandcttables idctdsp"
1840 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1841 exr_decoder_deps="zlib"
1842 ffv1_decoder_select="golomb rangecoder"
1843 ffv1_encoder_select="rangecoder"
1844 ffvhuff_decoder_select="huffyuv_decoder"
1845 ffvhuff_encoder_select="huffyuv_encoder"
1846 fic_decoder_select="golomb"
1847 flac_decoder_select="flacdsp golomb"
1848 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1849 flashsv_decoder_deps="zlib"
1850 flashsv_encoder_deps="zlib"
1851 flashsv2_decoder_deps="zlib"
1852 flv_decoder_select="h263_decoder"
1853 flv_encoder_select="h263_encoder"
1854 fourxm_decoder_select="blockdsp bswapdsp"
1855 fraps_decoder_select="bswapdsp huffman"
1856 g2m_decoder_deps="zlib"
1857 g2m_decoder_select="blockdsp idctdsp jpegtables"
1858 h261_decoder_select="mpeg_er mpegvideo"
1859 h261_encoder_select="aandcttables mpegvideoenc"
1860 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1861 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1862 h263i_decoder_select="h263_decoder"
1863 h263p_encoder_select="h263_encoder"
1864 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1865 h264_decoder_suggest="error_resilience"
1866 h264_nvenc_encoder_deps="nvenc"
1867 h264_qsv_decoder_deps="libmfx"
1868 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1869 h264_qsv_encoder_deps="libmfx"
1870 h264_qsv_encoder_select="qsvenc"
1871 hap_decoder_select="snappy texturedsp"
1872 hap_encoder_deps="libsnappy"
1873 hap_encoder_select="texturedspenc"
1874 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1875 hevc_nvenc_encoder_deps="nvenc"
1876 hevc_qsv_encoder_deps="libmfx"
1877 hevc_qsv_encoder_select="qsvenc"
1878 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1879 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1880 iac_decoder_select="imc_decoder"
1881 imc_decoder_select="bswapdsp fft mdct sinewin"
1882 indeo3_decoder_select="hpeldsp"
1883 indeo4_decoder_select="ividsp"
1884 indeo5_decoder_select="ividsp"
1885 interplay_video_decoder_select="hpeldsp"
1886 jpegls_decoder_select="golomb mjpeg_decoder"
1887 jpegls_encoder_select="golomb"
1888 jv_decoder_select="blockdsp"
1889 lagarith_decoder_select="huffyuvdsp"
1890 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1891 loco_decoder_select="golomb"
1892 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1893 metasound_decoder_select="lsp mdct sinewin"
1894 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1895 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1896 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1897 mjpegb_decoder_select="mjpeg_decoder"
1898 mlp_decoder_select="mlp_parser"
1899 motionpixels_decoder_select="bswapdsp"
1900 mp1_decoder_select="mpegaudio"
1901 mp1float_decoder_select="mpegaudio"
1902 mp2_decoder_select="mpegaudio"
1903 mp2float_decoder_select="mpegaudio"
1904 mp3_decoder_select="mpegaudio"
1905 mp3adu_decoder_select="mpegaudio"
1906 mp3adufloat_decoder_select="mpegaudio"
1907 mp3float_decoder_select="mpegaudio"
1908 mp3on4_decoder_select="mpegaudio"
1909 mp3on4float_decoder_select="mpegaudio"
1910 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1911 mpc8_decoder_select="mpegaudiodsp"
1912 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1913 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1914 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1915 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1916 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1917 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1918 mpeg2_qsv_encoder_deps="libmfx"
1919 mpeg2_qsv_encoder_select="qsvenc"
1920 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1921 mpeg4_encoder_select="h263_encoder"
1922 msa1_decoder_select="mss34dsp"
1923 msmpeg4v1_decoder_select="h263_decoder"
1924 msmpeg4v2_decoder_select="h263_decoder"
1925 msmpeg4v2_encoder_select="h263_encoder"
1926 msmpeg4v3_decoder_select="h263_decoder"
1927 msmpeg4v3_encoder_select="h263_encoder"
1928 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1929 mts2_decoder_select="mss34dsp"
1930 mxpeg_decoder_select="mjpeg_decoder"
1931 nellymoser_decoder_select="mdct sinewin"
1932 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1933 nuv_decoder_select="idctdsp lzo"
1934 on2avc_decoder_select="mdct"
1935 opus_decoder_deps="avresample"
1936 opus_decoder_select="imdct15"
1937 png_decoder_deps="zlib"
1938 png_encoder_deps="zlib"
1939 png_encoder_select="huffyuvencdsp"
1940 prores_decoder_select="idctdsp"
1941 prores_encoder_select="fdctdsp"
1942 qcelp_decoder_select="lsp"
1943 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1944 ra_144_encoder_select="audio_frame_queue lpc"
1945 ralf_decoder_select="golomb"
1946 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1947 rv10_encoder_select="h263_encoder"
1948 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1949 rv20_encoder_select="h263_encoder"
1950 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1951 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1952 shorten_decoder_select="golomb"
1953 sipr_decoder_select="lsp"
1954 sp5x_decoder_select="mjpeg_decoder"
1955 svq1_decoder_select="hpeldsp"
1956 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1957 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1958 svq3_decoder_suggest="zlib"
1959 tak_decoder_select="audiodsp"
1960 tdsc_decoder_deps="zlib"
1961 tdsc_decoder_select="mjpeg_decoder"
1962 theora_decoder_select="vp3_decoder"
1963 thp_decoder_select="mjpeg_decoder"
1964 tiff_decoder_suggest="zlib"
1965 tiff_encoder_suggest="zlib"
1966 truehd_decoder_select="mlp_decoder"
1967 truemotion2_decoder_select="bswapdsp"
1968 truespeech_decoder_select="bswapdsp"
1969 tscc_decoder_deps="zlib"
1970 txd_decoder_select="texturedsp"
1971 twinvq_decoder_select="mdct lsp sinewin"
1972 utvideo_decoder_select="bswapdsp"
1973 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1974 vble_decoder_select="huffyuvdsp"
1975 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1976 vc1image_decoder_select="vc1_decoder"
1977 vorbis_decoder_select="mdct"
1978 vorbis_encoder_select="mdct"
1979 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1980 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1981 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1982 vp6a_decoder_select="vp6_decoder"
1983 vp6f_decoder_select="vp6_decoder"
1984 vp7_decoder_select="h264pred videodsp"
1985 vp8_decoder_select="h264pred videodsp"
1986 vp9_decoder_select="videodsp"
1987 webp_decoder_select="vp8_decoder"
1988 wmapro_decoder_select="mdct sinewin wma_freqs"
1989 wmav1_decoder_select="mdct sinewin wma_freqs"
1990 wmav1_encoder_select="mdct sinewin wma_freqs"
1991 wmav2_decoder_select="mdct sinewin wma_freqs"
1992 wmav2_encoder_select="mdct sinewin wma_freqs"
1993 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1994 wmv1_decoder_select="h263_decoder"
1995 wmv1_encoder_select="h263_encoder"
1996 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1997 wmv2_encoder_select="h263_encoder"
1998 wmv3_decoder_select="vc1_decoder"
1999 wmv3image_decoder_select="wmv3_decoder"
2000 zerocodec_decoder_deps="zlib"
2001 zlib_decoder_deps="zlib"
2002 zlib_encoder_deps="zlib"
2003 zmbv_decoder_deps="zlib"
2004 zmbv_encoder_deps="zlib"
2005
2006 # hardware accelerators
2007 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2008 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2009 vaapi_deps="va_va_h"
2010 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2011 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2012 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2013
2014 h263_vaapi_hwaccel_deps="vaapi"
2015 h263_vaapi_hwaccel_select="h263_decoder"
2016 h263_vdpau_hwaccel_deps="vdpau"
2017 h263_vdpau_hwaccel_select="h263_decoder"
2018 h264_d3d11va_hwaccel_deps="d3d11va"
2019 h264_d3d11va_hwaccel_select="h264_decoder"
2020 h264_dxva2_hwaccel_deps="dxva2"
2021 h264_dxva2_hwaccel_select="h264_decoder"
2022 h264_mmal_decoder_deps="mmal"
2023 h264_mmal_hwaccel_deps="mmal"
2024 h264_mmal_decoder_select="h264_decoder"
2025 h264_mmal_encoder_deps="mmal"
2026 h264_qsv_hwaccel_deps="libmfx"
2027 h264_vaapi_hwaccel_deps="vaapi"
2028 h264_vaapi_hwaccel_select="h264_decoder"
2029 h264_vda_hwaccel_deps="vda"
2030 h264_vda_hwaccel_select="h264_decoder"
2031 h264_vda_old_hwaccel_deps="vda"
2032 h264_vda_old_hwaccel_select="h264_decoder"
2033 h264_vdpau_hwaccel_deps="vdpau"
2034 h264_vdpau_hwaccel_select="h264_decoder"
2035 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2036 hevc_d3d11va_hwaccel_select="hevc_decoder"
2037 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2038 hevc_dxva2_hwaccel_select="hevc_decoder"
2039 mpeg1_vdpau_hwaccel_deps="vdpau"
2040 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2041 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2042 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2043 mpeg2_dxva2_hwaccel_deps="dxva2"
2044 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2045 mpeg2_vaapi_hwaccel_deps="vaapi"
2046 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2047 mpeg2_vdpau_hwaccel_deps="vdpau"
2048 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2049 mpeg4_vaapi_hwaccel_deps="vaapi"
2050 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2051 mpeg4_vdpau_hwaccel_deps="vdpau"
2052 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2053 vc1_d3d11va_hwaccel_deps="d3d11va"
2054 vc1_d3d11va_hwaccel_select="vc1_decoder"
2055 vc1_dxva2_hwaccel_deps="dxva2"
2056 vc1_dxva2_hwaccel_select="vc1_decoder"
2057 vc1_vaapi_hwaccel_deps="vaapi"
2058 vc1_vaapi_hwaccel_select="vc1_decoder"
2059 vc1_vdpau_hwaccel_deps="vdpau"
2060 vc1_vdpau_hwaccel_select="vc1_decoder"
2061 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2062 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2063 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2064 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2065
2066 # parsers
2067 h264_parser_select="h264_decoder"
2068 hevc_parser_select="golomb"
2069 mpegvideo_parser_select="mpegvideo"
2070 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2071 vc1_parser_select="mpegvideo startcode vc1_decoder"
2072
2073 # bitstream_filters
2074 mjpeg2jpeg_bsf_select="jpegtables"
2075
2076 # external libraries
2077 libdcadec_decoder_deps="libdcadec"
2078 libfaac_encoder_deps="libfaac"
2079 libfaac_encoder_select="audio_frame_queue"
2080 libfdk_aac_decoder_deps="libfdk_aac"
2081 libfdk_aac_encoder_deps="libfdk_aac"
2082 libfdk_aac_encoder_select="audio_frame_queue"
2083 libgsm_decoder_deps="libgsm"
2084 libgsm_encoder_deps="libgsm"
2085 libgsm_ms_decoder_deps="libgsm"
2086 libgsm_ms_encoder_deps="libgsm"
2087 libilbc_decoder_deps="libilbc"
2088 libilbc_encoder_deps="libilbc"
2089 libmp3lame_encoder_deps="libmp3lame"
2090 libmp3lame_encoder_select="audio_frame_queue"
2091 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2092 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2093 libopencore_amrnb_encoder_select="audio_frame_queue"
2094 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2095 libopenh264_encoder_deps="libopenh264"
2096 libopenjpeg_decoder_deps="libopenjpeg"
2097 libopenjpeg_encoder_deps="libopenjpeg"
2098 libopus_decoder_deps="libopus"
2099 libopus_encoder_deps="libopus"
2100 libopus_encoder_select="audio_frame_queue"
2101 libschroedinger_decoder_deps="libschroedinger"
2102 libschroedinger_encoder_deps="libschroedinger"
2103 libspeex_decoder_deps="libspeex"
2104 libspeex_encoder_deps="libspeex"
2105 libspeex_encoder_select="audio_frame_queue"
2106 libtheora_encoder_deps="libtheora"
2107 libtwolame_encoder_deps="libtwolame"
2108 libvo_aacenc_encoder_deps="libvo_aacenc"
2109 libvo_aacenc_encoder_select="audio_frame_queue"
2110 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2111 libvorbis_encoder_deps="libvorbis"
2112 libvorbis_encoder_select="audio_frame_queue"
2113 libvpx_vp8_decoder_deps="libvpx"
2114 libvpx_vp8_encoder_deps="libvpx"
2115 libvpx_vp9_decoder_deps="libvpx"
2116 libvpx_vp9_encoder_deps="libvpx"
2117 libwavpack_encoder_deps="libwavpack"
2118 libwebp_encoder_deps="libwebp"
2119 libx262_encoder_deps="libx262"
2120 libx264_encoder_deps="libx264"
2121 libx265_encoder_deps="libx265"
2122 libxavs_encoder_deps="libxavs"
2123 libxvid_encoder_deps="libxvid"
2124
2125 # demuxers / muxers
2126 ac3_demuxer_select="ac3_parser"
2127 asf_demuxer_select="riffdec"
2128 asf_muxer_select="riffenc"
2129 asf_stream_muxer_select="asf_muxer"
2130 avi_demuxer_select="riffdec"
2131 avi_muxer_select="riffenc"
2132 avisynth_demuxer_deps="avisynth"
2133 avisynth_demuxer_select="riffdec"
2134 caf_demuxer_select="riffdec"
2135 dash_muxer_select="mp4_muxer"
2136 dirac_demuxer_select="dirac_parser"
2137 dv_demuxer_select="dvprofile"
2138 dv_muxer_select="dvprofile"
2139 dxa_demuxer_select="riffdec"
2140 eac3_demuxer_select="ac3_parser"
2141 f4v_muxer_select="mov_muxer"
2142 flac_demuxer_select="flac_parser"
2143 hds_muxer_select="flv_muxer"
2144 hls_muxer_select="mpegts_muxer"
2145 ipod_muxer_select="mov_muxer"
2146 ismv_muxer_select="mov_muxer"
2147 matroska_audio_muxer_select="matroska_muxer"
2148 matroska_demuxer_select="riffdec"
2149 matroska_demuxer_suggest="bzlib lzo zlib"
2150 matroska_muxer_select="riffenc"
2151 mmf_muxer_select="riffenc"
2152 mov_demuxer_select="riffdec"
2153 mov_demuxer_suggest="zlib"
2154 mov_muxer_select="riffenc rtpenc_chain"
2155 mp3_demuxer_select="mpegaudio_parser"
2156 mp4_muxer_select="mov_muxer"
2157 mpegts_muxer_select="adts_muxer latm_muxer"
2158 mpegtsraw_demuxer_select="mpegts_demuxer"
2159 mxf_d10_muxer_select="mxf_muxer"
2160 nut_muxer_select="riffenc"
2161 nuv_demuxer_select="riffdec"
2162 oga_muxer_select="ogg_muxer"
2163 ogg_demuxer_select="golomb"
2164 opus_muxer_select="ogg_muxer"
2165 psp_muxer_select="mov_muxer"
2166 rtp_demuxer_select="sdp_demuxer"
2167 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2168 rtsp_demuxer_select="http_protocol rtpdec"
2169 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2170 sap_demuxer_select="sdp_demuxer"
2171 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2172 sdp_demuxer_select="rtpdec"
2173 smoothstreaming_muxer_select="ismv_muxer"
2174 spdif_muxer_select="aac_parser"
2175 spx_muxer_select="ogg_muxer"
2176 tak_demuxer_select="tak_parser"
2177 tg2_muxer_select="mov_muxer"
2178 tgp_muxer_select="mov_muxer"
2179 w64_demuxer_select="wav_demuxer"
2180 wav_demuxer_select="riffdec"
2181 wav_muxer_select="riffenc"
2182 webm_muxer_select="riffenc"
2183 wtv_demuxer_select="riffdec"
2184 xmv_demuxer_select="riffdec"
2185 xwma_demuxer_select="riffdec"
2186
2187 # indevs / outdevs
2188 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2189 alsa_outdev_deps="alsa_asoundlib_h"
2190 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2191 dv1394_indev_deps="dv1394"
2192 dv1394_indev_select="dv_demuxer"
2193 fbdev_indev_deps="linux_fb_h"
2194 jack_indev_deps="jack_jack_h pthreads"
2195 libcdio_indev_deps="libcdio"
2196 libdc1394_indev_deps="libdc1394"
2197 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2198 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2199 pulse_indev_deps="libpulse"
2200 sndio_indev_deps="sndio_h"
2201 sndio_outdev_deps="sndio_h"
2202 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2203 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2204 vfwcap_indev_extralibs="-lavicap32"
2205 x11grab_indev_deps="x11grab"
2206 x11grab_xcb_indev_deps="libxcb"
2207
2208 # protocols
2209 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2210 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2211 ffrtmpcrypt_protocol_select="tcp_protocol"
2212 ffrtmphttp_protocol_deps="!librtmp_protocol"
2213 ffrtmphttp_protocol_select="http_protocol"
2214 gopher_protocol_select="network"
2215 http_protocol_select="tcp_protocol"
2216 httpproxy_protocol_select="tcp_protocol"
2217 https_protocol_select="tls_protocol"
2218 icecast_protocol_select="http_protocol"
2219 librtmp_protocol_deps="librtmp"
2220 librtmpe_protocol_deps="librtmp"
2221 librtmps_protocol_deps="librtmp"
2222 librtmpt_protocol_deps="librtmp"
2223 librtmpte_protocol_deps="librtmp"
2224 mmsh_protocol_select="http_protocol"
2225 mmst_protocol_select="network"
2226 rtmp_protocol_deps="!librtmp_protocol"
2227 rtmp_protocol_select="tcp_protocol"
2228 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2229 rtmps_protocol_deps="!librtmp_protocol"
2230 rtmps_protocol_select="tls_protocol"
2231 rtmpt_protocol_select="ffrtmphttp_protocol"
2232 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2233 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2234 rtp_protocol_select="udp_protocol"
2235 sctp_protocol_deps="struct_sctp_event_subscribe"
2236 sctp_protocol_select="network"
2237 srtp_protocol_select="rtp_protocol"
2238 tcp_protocol_select="network"
2239 tls_gnutls_protocol_deps="gnutls"
2240 tls_gnutls_protocol_select="tcp_protocol"
2241 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2242 tls_openssl_protocol_select="tcp_protocol"
2243 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2244 udp_protocol_select="network"
2245 unix_protocol_deps="sys_un_h"
2246 unix_protocol_select="network"
2247
2248 # filters
2249 blackframe_filter_deps="gpl"
2250 boxblur_filter_deps="gpl"
2251 bs2b_filter_deps="libbs2b"
2252 cropdetect_filter_deps="gpl"
2253 delogo_filter_deps="gpl"
2254 drawtext_filter_deps="libfreetype"
2255 frei0r_filter_deps="frei0r dlopen"
2256 frei0r_filter_extralibs='$ldl'
2257 frei0r_src_filter_deps="frei0r dlopen"
2258 frei0r_src_filter_extralibs='$ldl'
2259 hqdn3d_filter_deps="gpl"
2260 interlace_filter_deps="gpl"
2261 ocv_filter_deps="libopencv"
2262 resample_filter_deps="avresample"
2263 scale_filter_deps="swscale"
2264
2265 # examples
2266 avcodec_example_deps="avcodec avutil"
2267 filter_audio_example_deps="avfilter avutil"
2268 metadata_example_deps="avformat avutil"
2269 output_example_deps="avcodec avformat avutil swscale"
2270 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2271 transcode_aac_example_deps="avcodec avformat avresample"
2272
2273 # libraries, in linking order
2274 avcodec_deps="avutil"
2275 avdevice_deps="avformat avcodec avutil"
2276 avfilter_deps="avutil"
2277 avformat_deps="avcodec avutil"
2278 avresample_deps="avutil"
2279 swscale_deps="avutil"
2280
2281 # programs
2282 avconv_deps="avcodec avfilter avformat avresample swscale"
2283 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2284                fps_filter null_filter resample_filter scale_filter
2285                setpts_filter trim_filter"
2286 avplay_deps="avcodec avformat avresample swscale sdl"
2287 avplay_libs='$sdl_libs'
2288 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2289 avprobe_deps="avcodec avformat"
2290
2291 # documentation
2292 pod2man_deps="doc"
2293 texi2html_deps="doc"
2294
2295 # default parameters
2296
2297 logfile="config.log"
2298
2299 # installation paths
2300 prefix_default="/usr/local"
2301 bindir_default='${prefix}/bin'
2302 datadir_default='${prefix}/share/avconv'
2303 docdir_default='${prefix}/share/doc/libav'
2304 incdir_default='${prefix}/include'
2305 libdir_default='${prefix}/lib'
2306 mandir_default='${prefix}/share/man'
2307 shlibdir_default="$libdir_default"
2308
2309 # toolchain
2310 ar_default="ar"
2311 cc_default="gcc"
2312 host_cc_default="gcc"
2313 cp_f="cp -f"
2314 ln_s="ln -s -f"
2315 nm_default="nm -g"
2316 objformat="elf"
2317 pkg_config_default=pkg-config
2318 ranlib="ranlib"
2319 strip="strip"
2320 yasmexe="yasm"
2321
2322 # machine
2323 arch_default=$(uname -m)
2324 cpu="generic"
2325 intrinsics="none"
2326
2327 # OS
2328 target_os_default=$(tolower $(uname -s))
2329 host_os=$target_os_default
2330
2331 # configurable options
2332 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2333
2334 enable asm
2335 enable debug
2336 enable doc
2337 enable faan faandct faanidct
2338 enable optimizations
2339 enable safe_bitstream_reader
2340 enable static
2341 enable swscale_alpha
2342 enable valgrind_backtrace
2343
2344 # By default, enable only those hwaccels that have no external dependencies.
2345 enable d3d11va dxva2 vda vdpau
2346
2347 # build settings
2348 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2349 LIBPREF="lib"
2350 LIBSUF=".a"
2351 FULLNAME='$(NAME)$(BUILDSUF)'
2352 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2353 SLIBPREF="lib"
2354 SLIBSUF=".so"
2355 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2356 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2357 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2358 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2359 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2360 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2361
2362 asflags_filter=echo
2363 cflags_filter=echo
2364 ldflags_filter=echo
2365
2366 AS_C='-c'
2367 AS_O='-o $@'
2368 CC_C='-c'
2369 CC_E='-E -o $@'
2370 CC_O='-o $@'
2371 LD_O='-o $@'
2372 LD_LIB='-l%'
2373 LD_PATH='-L'
2374 HOSTCC_C='-c'
2375 HOSTCC_E='-E -o $@'
2376 HOSTCC_O='-o $@'
2377 HOSTLD_O='-o $@'
2378
2379 host_libs='-lm'
2380 host_cflags_filter=echo
2381 host_ldflags_filter=echo
2382
2383 target_path='$(CURDIR)'
2384
2385 # since the object filename is not given with the -MM flag, the compiler
2386 # is only able to print the basename, and we must add the path ourselves
2387 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2388 DEPFLAGS='-MM'
2389
2390 # find source path
2391 if test -f configure; then
2392     source_path=.
2393 else
2394     source_path=$(cd $(dirname "$0"); pwd)
2395     echo "$source_path" | grep -q '[[:blank:]]' &&
2396         die "Out of tree builds are impossible with whitespace in source path."
2397     test -e "$source_path/config.h" &&
2398         die "Out of tree builds are impossible with config.h in source dir."
2399 fi
2400
2401 for v in "$@"; do
2402     r=${v#*=}
2403     l=${v%"$r"}
2404     r=$(sh_quote "$r")
2405     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2406 done
2407
2408 find_things(){
2409     thing=$1
2410     pattern=$2
2411     file=$source_path/$3
2412     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2413 }
2414
2415 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2416 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2417 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2418 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2419 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2420 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2421 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2422 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2423 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2424 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2425 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2426
2427 ALL_COMPONENTS="
2428     $BSF_LIST
2429     $DECODER_LIST
2430     $DEMUXER_LIST
2431     $ENCODER_LIST
2432     $FILTER_LIST
2433     $HWACCEL_LIST
2434     $INDEV_LIST
2435     $MUXER_LIST
2436     $OUTDEV_LIST
2437     $PARSER_LIST
2438     $PROTOCOL_LIST
2439 "
2440
2441 for n in $COMPONENT_LIST; do
2442     v=$(toupper ${n%s})_LIST
2443     eval enable \$$v
2444     eval ${n}_if_any="\$$v"
2445 done
2446
2447 enable $ARCH_EXT_LIST
2448
2449 die_unknown(){
2450     echo "Unknown option \"$1\"."
2451     echo "See $0 --help for available options."
2452     exit 1
2453 }
2454
2455 print_3_columns() {
2456     cat | tr ' ' '\n' | sort | pr -r -3 -t
2457 }
2458
2459 show_list() {
2460     suffix=_$1
2461     shift
2462     echo $* | sed s/$suffix//g | print_3_columns
2463     exit 0
2464 }
2465
2466 rand_list(){
2467     IFS=', '
2468     set -- $*
2469     unset IFS
2470     for thing; do
2471         comp=${thing%:*}
2472         prob=${thing#$comp}
2473         prob=${prob#:}
2474         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2475         echo "prob ${prob:-0.5}"
2476         printf '%s\n' $comp
2477     done
2478 }
2479
2480 do_random(){
2481     action=$1
2482     shift
2483     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2484     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2485 }
2486
2487 for opt do
2488     optval="${opt#*=}"
2489     case "$opt" in
2490         --extra-ldflags=*)
2491             add_ldflags $optval
2492         ;;
2493         --extra-ldexeflags=*)
2494             add_ldexeflags $optval
2495         ;;
2496         --extra-libs=*)
2497             add_extralibs $optval
2498         ;;
2499         --disable-devices)
2500             disable $INDEV_LIST $OUTDEV_LIST
2501         ;;
2502         --enable-debug=*)
2503             debuglevel="$optval"
2504         ;;
2505         --disable-programs)
2506             disable $PROGRAM_LIST
2507         ;;
2508         --disable-everything)
2509             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2510         ;;
2511         --disable-all)
2512             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2513             disable $LIBRARY_LIST $PROGRAM_LIST doc
2514         ;;
2515         --enable-random|--disable-random)
2516             action=${opt%%-random}
2517             do_random ${action#--} $COMPONENT_LIST
2518         ;;
2519         --enable-random=*|--disable-random=*)
2520             action=${opt%%-random=*}
2521             do_random ${action#--} $optval
2522         ;;
2523         --enable-*=*|--disable-*=*)
2524             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2525             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2526             eval list=\$$(toupper $thing)_LIST
2527             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2528             $action $(filter "$name" $list)
2529         ;;
2530         --enable-avserver|--disable-avserver*)
2531             warn "avserver has been removed, the ${opt} option is only"\
2532                  "provided for compatibility and will be removed in the future"
2533         ;;
2534         --enable-?*|--disable-?*)
2535             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2536             if is_in $option $COMPONENT_LIST; then
2537                 test $action = disable && action=unset
2538                 eval $action \$$(toupper ${option%s})_LIST
2539             elif is_in $option $CMDLINE_SELECT; then
2540                 $action $option
2541             else
2542                 die_unknown $opt
2543             fi
2544         ;;
2545         --list-*)
2546             NAME="${opt#--list-}"
2547             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2548             NAME=${NAME%s}
2549             eval show_list $NAME \$$(toupper $NAME)_LIST
2550         ;;
2551         --help|-h) show_help
2552         ;;
2553         *)
2554             optname="${opt%%=*}"
2555             optname="${optname#--}"
2556             optname=$(echo "$optname" | sed 's/-/_/g')
2557             if is_in $optname $CMDLINE_SET; then
2558                 eval $optname='$optval'
2559             elif is_in $optname $CMDLINE_APPEND; then
2560                 append $optname "$optval"
2561             else
2562                 die_unknown $opt
2563             fi
2564         ;;
2565     esac
2566 done
2567
2568 for e in $env; do
2569     eval "export $e"
2570 done
2571
2572 disabled logging && logfile=/dev/null
2573
2574 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2575 set >> $logfile
2576
2577 case "$toolchain" in
2578     clang-asan)
2579         cc_default="clang"
2580         add_cflags  -fsanitize=address
2581         add_ldflags -fsanitize=address
2582     ;;
2583     clang-tsan)
2584         cc_default="clang"
2585         add_cflags  -fsanitize=thread -pie
2586         add_ldflags -fsanitize=thread -pie
2587     ;;
2588     clang-usan)
2589         cc_default="clang"
2590         add_cflags  -fsanitize=undefined -O1
2591         add_ldflags -fsanitize=undefined
2592     ;;
2593     gcc-asan)
2594         cc_default="gcc"
2595         add_cflags  -fsanitize=address
2596         add_ldflags -fsanitize=address
2597     ;;
2598     gcc-tsan)
2599         cc_default="gcc"
2600         add_cflags  -fsanitize=thread -pie -fPIC
2601         add_ldflags -fsanitize=thread -pie -fPIC
2602     ;;
2603     gcc-usan)
2604         cc_default="gcc"
2605         add_cflags  -fsanitize=undefined
2606         add_ldflags -fsanitize=undefined
2607     ;;
2608     valgrind-massif)
2609         target_exec_default="valgrind"
2610         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2611     ;;
2612     valgrind-memcheck)
2613         target_exec_default="valgrind"
2614         target_exec_args="--track-origins=yes --leak-check=full"
2615     ;;
2616     msvc)
2617         # Check whether the current MSVC version needs the C99 converter.
2618         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2619         # support enough of C99 to build libav. Default to the new
2620         # behaviour if the regexp was unable to match anything, since this
2621         # successfully parses the version number of existing supported
2622         # versions that require the converter (MSVC 2010 and 2012).
2623         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2624         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2625             cc_default="cl"
2626         else
2627             cc_default="c99wrap cl"
2628         fi
2629         ld_default="link"
2630         nm_default="dumpbin -symbols"
2631         ar_default="lib"
2632         target_os_default="win32"
2633         # Use a relative path for TMPDIR. This makes sure all the
2634         # ffconf temp files are written with a relative path, avoiding
2635         # issues with msys/win32 path conversion for MSVC parameters
2636         # such as -Fo<file> or -out:<file>.
2637         TMPDIR=.
2638     ;;
2639     icl)
2640         cc_default="icl"
2641         ld_default="xilink"
2642         nm_default="dumpbin -symbols"
2643         ar_default="xilib"
2644         target_os_default="win32"
2645         TMPDIR=.
2646     ;;
2647     gcov)
2648         add_cflags  -fprofile-arcs -ftest-coverage
2649         add_ldflags -fprofile-arcs -ftest-coverage
2650     ;;
2651     hardened)
2652         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2653         add_cflags   -fno-strict-overflow -fstack-protector-all
2654         add_ldflags  -Wl,-z,relro -Wl,-z,now
2655     ;;
2656     ?*)
2657         die "Unknown toolchain $toolchain"
2658     ;;
2659 esac
2660
2661 test -n "$cross_prefix" && enable cross_compile
2662
2663 if enabled cross_compile; then
2664     test -n "$arch" && test -n "$target_os" ||
2665         die "Must specify target arch and OS when cross-compiling"
2666 fi
2667
2668 ar_default="${cross_prefix}${ar_default}"
2669 cc_default="${cross_prefix}${cc_default}"
2670 nm_default="${cross_prefix}${nm_default}"
2671 pkg_config_default="${cross_prefix}${pkg_config_default}"
2672 ranlib="${cross_prefix}${ranlib}"
2673 strip="${cross_prefix}${strip}"
2674
2675 sysinclude_default="${sysroot}/usr/include"
2676
2677 set_default arch cc pkg_config sysinclude target_exec target_os
2678 enabled cross_compile || host_cc_default=$cc
2679 set_default host_cc
2680
2681 if ! $pkg_config --version >/dev/null 2>&1; then
2682     warn "$pkg_config not found, library detection may fail."
2683     pkg_config=false
2684 fi
2685
2686 exesuf() {
2687     case $1 in
2688         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2689     esac
2690 }
2691
2692 EXESUF=$(exesuf $target_os)
2693 HOSTEXESUF=$(exesuf $host_os)
2694
2695 # set temporary file name
2696 : ${TMPDIR:=$TEMPDIR}
2697 : ${TMPDIR:=$TMP}
2698 : ${TMPDIR:=/tmp}
2699
2700 if ! check_cmd mktemp -u XXXXXX; then
2701     # simple replacement for missing mktemp
2702     # NOT SAFE FOR GENERAL USE
2703     mktemp(){
2704         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2705     }
2706 fi
2707
2708 tmpfile(){
2709     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2710         (set -C; exec > $tmp) 2>/dev/null ||
2711         die "Unable to create temporary file in $TMPDIR."
2712     append TMPFILES $tmp
2713     eval $1=$tmp
2714 }
2715
2716 trap 'rm -f -- $TMPFILES' EXIT
2717
2718 tmpfile TMPASM .asm
2719 tmpfile TMPC   .c
2720 tmpfile TMPE   $EXESUF
2721 tmpfile TMPH   .h
2722 tmpfile TMPO   .o
2723 tmpfile TMPS   .S
2724 tmpfile TMPSH  .sh
2725 tmpfile TMPV   .ver
2726
2727 unset -f mktemp
2728
2729 chmod +x $TMPE
2730
2731 # make sure we can execute files in $TMPDIR
2732 cat > $TMPSH 2>> $logfile <<EOF
2733 #! /bin/sh
2734 EOF
2735 chmod +x $TMPSH >> $logfile 2>&1
2736 if ! $TMPSH >> $logfile 2>&1; then
2737     cat <<EOF
2738 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2739 variable to another directory and make sure that it is not mounted noexec.
2740 EOF
2741     die "Sanity test failed."
2742 fi
2743
2744 armasm_flags(){
2745     for flag; do
2746         case $flag in
2747             # Filter out MSVC cl.exe options from cflags that shouldn't
2748             # be passed to gas-preprocessor
2749             -M[TD]*)                                            ;;
2750             *)                  echo $flag                      ;;
2751         esac
2752    done
2753 }
2754
2755 ccc_flags(){
2756     for flag; do
2757         case $flag in
2758             -std=c99)           echo -c99                       ;;
2759             -mcpu=*)            echo -arch ${flag#*=}           ;;
2760             -mieee)             echo -ieee                      ;;
2761             -O*|-fast)          echo $flag                      ;;
2762             -fno-math-errno)    echo -assume nomath_errno       ;;
2763             -g)                 echo -g3                        ;;
2764             -Wall)              echo -msg_enable level2         ;;
2765             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2766             -Wl,*)              echo $flag                      ;;
2767             -f*|-W*)                                            ;;
2768             *)                  echo $flag                      ;;
2769         esac
2770    done
2771 }
2772
2773 cparser_flags(){
2774     for flag; do
2775         case $flag in
2776             -Wno-switch)             echo -Wno-switch-enum ;;
2777             -Wno-format-zero-length) ;;
2778             -Wdisabled-optimization) ;;
2779             -Wno-pointer-sign)       echo -Wno-other ;;
2780             *)                       echo $flag ;;
2781         esac
2782     done
2783 }
2784
2785 msvc_common_flags(){
2786     for flag; do
2787         case $flag in
2788             # In addition to specifying certain flags under the compiler
2789             # specific filters, they must be specified here as well or else the
2790             # generic catch all at the bottom will print the original flag.
2791             -Wall)                ;;
2792             -std=c99)             ;;
2793             # Common flags
2794             -fomit-frame-pointer) ;;
2795             -g)                   echo -Z7 ;;
2796             -fno-math-errno)      ;;
2797             -fno-common)          ;;
2798             -fno-signed-zeros)    ;;
2799             -fPIC)                ;;
2800             -mthumb)              ;;
2801             -march=*)             ;;
2802             -lz)                  echo zlib.lib ;;
2803             -lavifil32)           echo vfw32.lib ;;
2804             -lavicap32)           echo vfw32.lib user32.lib ;;
2805             -l*)                  echo ${flag#-l}.lib ;;
2806             -L*)                  echo -libpath:${flag#-L} ;;
2807             *)                    echo $flag ;;
2808         esac
2809     done
2810 }
2811
2812 msvc_flags(){
2813     msvc_common_flags "$@"
2814     for flag; do
2815         case $flag in
2816             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2817                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2818                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2819                                        -wd4273 -wd4554 -wd4701 ;;
2820         esac
2821     done
2822 }
2823
2824 icl_flags(){
2825     msvc_common_flags "$@"
2826     for flag; do
2827         case $flag in
2828             # Despite what Intel's documentation says -Wall, which is supported
2829             # on Windows, does enable remarks so disable them here.
2830             -Wall)                echo $flag -Qdiag-disable:remark ;;
2831             -std=c99)             echo -Qstd=c99 ;;
2832         esac
2833     done
2834 }
2835
2836 pgi_flags(){
2837     for flag; do
2838         case $flag in
2839             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2840             -fomit-frame-pointer) echo -Mnoframe ;;
2841             -g)                   echo -gopt ;;
2842             *)                    echo $flag ;;
2843         esac
2844     done
2845 }
2846
2847 suncc_flags(){
2848     for flag; do
2849         case $flag in
2850             -march=*|-mcpu=*)
2851                 case "${flag#*=}" in
2852                     native)                   echo -xtarget=native       ;;
2853                     v9|niagara)               echo -xarch=sparc          ;;
2854                     ultrasparc)               echo -xarch=sparcvis       ;;
2855                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2856                     i586|pentium)             echo -xchip=pentium        ;;
2857                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2858                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2859                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2860                     pentium4*)          echo -xtarget=pentium4           ;;
2861                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2862                     *-sse3)             echo -xarch=sse3                 ;;
2863                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2864                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2865                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2866                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2867                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2868                     k8|opteron|athlon64|athlon-fx)
2869                                                echo -xarch=sse2a         ;;
2870                     athlon*)                   echo -xarch=pentium_proa  ;;
2871                 esac
2872                 ;;
2873             -std=c99)             echo -xc99              ;;
2874             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2875             -fPIC)                echo -KPIC -xcode=pic32 ;;
2876             -W*,*)                echo $flag              ;;
2877             -f*-*|-W*|-mimpure-text)                      ;;
2878             -shared)              echo -G                 ;;
2879             *)                    echo $flag              ;;
2880         esac
2881     done
2882 }
2883
2884 tms470_flags(){
2885     for flag; do
2886         case $flag in
2887             -march=*|-mcpu=*)
2888                 case "${flag#*=}" in
2889                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2890                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2891                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2892                     armv6*|arm11*)          echo -mv=6   ;;
2893                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2894                                             echo -mv=5e  ;;
2895                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2896                 esac
2897                 ;;
2898             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2899             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2900             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2901             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2902             -msoft-float)   echo --float_support=vfplib       ;;
2903             -O[0-3]|-mf=*)  echo $flag                        ;;
2904             -g)             echo -g -mn                       ;;
2905             -pds=*)         echo $flag                        ;;
2906             -D*|-I*)        echo $flag                        ;;
2907             --gcc|--abi=*)  echo $flag                        ;;
2908             -me)            echo $flag                        ;;
2909         esac
2910     done
2911 }
2912
2913 probe_cc(){
2914     pfx=$1
2915     _cc=$2
2916
2917     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2918     unset _ld_o _ldflags _ld_lib _ld_path
2919     unset _depflags _DEPCMD _DEPFLAGS
2920     _flags_filter=echo
2921
2922     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2923         _type=llvm_gcc
2924         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2925         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2926         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2927         _cflags_speed='-O3'
2928         _cflags_size='-Os'
2929     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2930         _type=gcc
2931         gcc_version=$($_cc --version | head -n1)
2932         gcc_basever=$($_cc -dumpversion)
2933         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2934         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2935         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2936         if ! $_cc -dumpversion | grep -q '^2\.'; then
2937             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2938         fi
2939         _cflags_speed='-O3'
2940         _cflags_size='-Os'
2941     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2942         _type=icc
2943         _ident=$($_cc --version | head -n1)
2944         _depflags='-MMD'
2945         _cflags_speed='-O3'
2946         _cflags_size='-Os'
2947         _cflags_noopt='-O1'
2948     elif $_cc -v 2>&1 | grep -q xlc; then
2949         _type=xlc
2950         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2951         _cflags_speed='-O5'
2952         _cflags_size='-O5 -qcompact'
2953     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2954         _type=ccc
2955         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2956         _DEPFLAGS='-M'
2957         _cflags_speed='-fast'
2958         _cflags_size='-O1'
2959         _flags_filter=ccc_flags
2960     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2961         test -d "$sysroot" || die "No valid sysroot specified."
2962         _type=armcc
2963         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2964         armcc_conf="$PWD/armcc.conf"
2965         $_cc --arm_linux_configure                 \
2966              --arm_linux_config_file="$armcc_conf" \
2967              --configure_sysroot="$sysroot"        \
2968              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2969              die "Error creating armcc configuration file."
2970         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2971         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2972         as_default="${cross_prefix}gcc"
2973         _depflags='-MMD'
2974         _cflags_speed='-O3'
2975         _cflags_size='-Os'
2976     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2977         _type=tms470
2978         _ident=$($_cc -version | head -n1 | tr -s ' ')
2979         _flags='--gcc --abi=eabi -me'
2980         _cc_e='-ppl -fe=$@'
2981         _cc_o='-fe=$@'
2982         _depflags='-ppa -ppd=$(@:.o=.d)'
2983         _cflags_speed='-O3 -mf=5'
2984         _cflags_size='-O3 -mf=2'
2985         _flags_filter=tms470_flags
2986     elif $_cc -v 2>&1 | grep -q clang; then
2987         _type=clang
2988         _ident=$($_cc --version | head -n1)
2989         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2990         _cflags_speed='-O3'
2991         _cflags_size='-Os'
2992     elif $_cc -V 2>&1 | grep -q Sun; then
2993         _type=suncc
2994         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2995         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2996         _DEPFLAGS='-xM1 -xc99'
2997         _ldflags='-std=c99'
2998         _cflags_speed='-O5'
2999         _cflags_size='-O5 -xspace'
3000         _flags_filter=suncc_flags
3001     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3002         _type=pathscale
3003         _ident=$($_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'
3008     elif $_cc -v 2>&1 | grep -q Open64; then
3009         _type=open64
3010         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3011         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3012         _cflags_speed='-O2'
3013         _cflags_size='-Os'
3014         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3015     elif $_cc -V 2>&1 | grep -q Portland; then
3016         _type=pgi
3017         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3018         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3019         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3020         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3021         _cflags_noopt="-O1"
3022         _flags_filter=pgi_flags
3023     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3024         _type=armasm
3025         _ident=$($_cc | head -n1)
3026         # 4509: "This form of conditional instruction is deprecated"
3027         _flags="-nologo -ignore 4509"
3028         _flags_filter=armasm_flags
3029     elif $_cc 2>&1 | grep -q Microsoft; then
3030         _type=msvc
3031         _ident=$($_cc 2>&1 | head -n1)
3032         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3033         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3034         _cflags_speed="-O2"
3035         _cflags_size="-O1"
3036         if $_cc 2>&1 | grep -q Linker; then
3037             _ld_o='-out:$@'
3038         else
3039             _ld_o='-Fe$@'
3040         fi
3041         _cc_o='-Fo$@'
3042         _cc_e='-P -Fi$@'
3043         _flags_filter=msvc_flags
3044         _ld_lib='lib%.a'
3045         _ld_path='-libpath:'
3046         _flags='-nologo'
3047         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3048     elif $_cc 2>&1 | grep -q Intel; then
3049         _type=icl
3050         _ident=$($_cc 2>&1 | head -n1)
3051         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3052         # Not only is O3 broken on 13.x+ but it is slower on all previous
3053         # versions (tested) as well.
3054         _cflags_speed="-O2"
3055         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3056         if $_cc 2>&1 | grep -q Linker; then
3057             _ld_o='-out:$@'
3058         else
3059             _ld_o='-Fe$@'
3060         fi
3061         _cc_o='-Fo$@'
3062         _cc_e='-P'
3063         _flags_filter=icl_flags
3064         _ld_lib='lib%.a'
3065         _ld_path='-libpath:'
3066         # -Qdiag-error to make icl error when seeing certain unknown arguments
3067         _flags='-nologo -Qdiag-error:4044,10157'
3068         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3069         # with MSVC which enables it by default.
3070         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3071     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3072         _type=cparser
3073         _ident=$($_cc --version | head -n1)
3074         _depflags='-MMD'
3075         _cflags_speed='-O4'
3076         _cflags_size='-O2'
3077         _flags_filter=cparser_flags
3078     fi
3079
3080     eval ${pfx}_type=\$_type
3081     eval ${pfx}_ident=\$_ident
3082 }
3083
3084 set_ccvars(){
3085     eval ${1}_C=\${_cc_c-\${${1}_C}}
3086     eval ${1}_E=\${_cc_e-\${${1}_E}}
3087     eval ${1}_O=\${_cc_o-\${${1}_O}}
3088
3089     if [ -n "$_depflags" ]; then
3090         eval ${1}_DEPFLAGS=\$_depflags
3091     else
3092         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3093         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3094         eval DEP${1}FLAGS=\$_flags
3095     fi
3096 }
3097
3098 probe_cc cc "$cc"
3099 cflags_filter=$_flags_filter
3100 cflags_speed=$_cflags_speed
3101 cflags_size=$_cflags_size
3102 cflags_noopt=$_cflags_noopt
3103 add_cflags $_flags $_cflags
3104 cc_ldflags=$_ldflags
3105 set_ccvars CC
3106
3107 probe_cc hostcc "$host_cc"
3108 host_cflags_filter=$_flags_filter
3109 add_host_cflags  $_flags $_cflags
3110 set_ccvars HOSTCC
3111
3112 test -n "$cc_type" && enable $cc_type ||
3113     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3114
3115 : ${as_default:=$cc}
3116 : ${dep_cc_default:=$cc}
3117 : ${ld_default:=$cc}
3118 : ${host_ld_default:=$host_cc}
3119 set_default ar as dep_cc ld host_ld
3120
3121 probe_cc as "$as"
3122 asflags_filter=$_flags_filter
3123 add_asflags $_flags $_cflags
3124 set_ccvars AS
3125
3126 probe_cc ld "$ld"
3127 ldflags_filter=$_flags_filter
3128 add_ldflags $_flags $_ldflags
3129 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3130 LD_O=${_ld_o-$LD_O}
3131 LD_LIB=${_ld_lib-$LD_LIB}
3132 LD_PATH=${_ld_path-$LD_PATH}
3133
3134 probe_cc hostld "$host_ld"
3135 host_ldflags_filter=$_flags_filter
3136 add_host_ldflags $_flags $_ldflags
3137 HOSTLD_O=${_ld_o-$HOSTLD_O}
3138
3139 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3140     probe_cc depcc "$dep_cc"
3141     CCDEP=${_DEPCMD:-$DEPCMD}
3142     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3143     DEPCCFLAGS=$_flags
3144 fi
3145
3146 if $ar 2>&1 | grep -q Microsoft; then
3147     arflags="-nologo"
3148     ar_o='-out:$@'
3149 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3150     arflags="rq"
3151     ar_o='$@'
3152 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3153     arflags='-Xany -r -c'
3154     ar_o='$@'
3155 else
3156     arflags="rc"
3157     ar_o='$@'
3158 fi
3159
3160 add_cflags $extra_cflags
3161 add_asflags $extra_cflags
3162
3163 if test -n "$sysroot"; then
3164     case "$cc_type" in
3165         gcc|llvm_gcc|clang)
3166             add_cppflags --sysroot="$sysroot"
3167             add_ldflags --sysroot="$sysroot"
3168         ;;
3169         tms470)
3170             add_cppflags -I"$sysinclude"
3171             add_ldflags  --sysroot="$sysroot"
3172         ;;
3173     esac
3174 fi
3175
3176 if test "$cpu" = host; then
3177     enabled cross_compile &&
3178         die "--cpu=host makes no sense when cross-compiling."
3179
3180     case "$cc_type" in
3181         gcc|llvm_gcc)
3182             check_native(){
3183                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3184                 sed -n "/cc1.*$1=/{
3185                             s/.*$1=\\([^ ]*\\).*/\\1/
3186                             p
3187                             q
3188                         }" $TMPE
3189             }
3190             cpu=$(check_native -march || check_native -mcpu)
3191         ;;
3192     esac
3193
3194     test "${cpu:-host}" = host &&
3195         die "--cpu=host not supported with compiler $cc"
3196 fi
3197
3198 # Deal with common $arch aliases
3199 case "$arch" in
3200     aarch64|arm64)
3201         arch="aarch64"
3202     ;;
3203     arm*)
3204         arch="arm"
3205     ;;
3206     mips*|IP*)
3207         arch="mips"
3208     ;;
3209     parisc*|hppa*)
3210         arch="parisc"
3211     ;;
3212     "Power Macintosh"|ppc*|powerpc*)
3213         arch="ppc"
3214     ;;
3215     s390|s390x)
3216         arch="s390"
3217     ;;
3218     sh4|sh)
3219         arch="sh4"
3220     ;;
3221     sun4u|sparc*)
3222         arch="sparc"
3223     ;;
3224     tilegx|tile-gx)
3225         arch="tilegx"
3226     ;;
3227     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3228         arch="x86"
3229     ;;
3230 esac
3231
3232 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3233 enable $arch
3234
3235 # Add processor-specific flags
3236 if enabled aarch64; then
3237
3238     case $cpu in
3239         armv*)
3240             cpuflags="-march=$cpu"
3241         ;;
3242         *)
3243             cpuflags="-mcpu=$cpu"
3244         ;;
3245     esac
3246
3247 elif enabled alpha; then
3248
3249     cpuflags="-mcpu=$cpu"
3250
3251 elif enabled arm; then
3252
3253     check_arm_arch() {
3254         check_cpp_condition stddef.h \
3255             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3256             $cpuflags
3257     }
3258
3259     probe_arm_arch() {
3260         if   check_arm_arch 4;        then echo armv4;
3261         elif check_arm_arch 4T;       then echo armv4t;
3262         elif check_arm_arch 5;        then echo armv5;
3263         elif check_arm_arch 5E;       then echo armv5e;
3264         elif check_arm_arch 5T;       then echo armv5t;
3265         elif check_arm_arch 5TE;      then echo armv5te;
3266         elif check_arm_arch 5TEJ;     then echo armv5te;
3267         elif check_arm_arch 6;        then echo armv6;
3268         elif check_arm_arch 6J;       then echo armv6j;
3269         elif check_arm_arch 6K;       then echo armv6k;
3270         elif check_arm_arch 6Z;       then echo armv6z;
3271         elif check_arm_arch 6ZK;      then echo armv6zk;
3272         elif check_arm_arch 6T2;      then echo armv6t2;
3273         elif check_arm_arch 7;        then echo armv7;
3274         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3275         elif check_arm_arch 7S;       then echo armv7-a;
3276         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3277         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3278         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3279         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3280         fi
3281     }
3282
3283     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3284
3285     case $cpu in
3286         armv*)
3287             cpuflags="-march=$cpu"
3288             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3289         ;;
3290         *)
3291             cpuflags="-mcpu=$cpu"
3292             case $cpu in
3293                 cortex-a*)                               subarch=armv7a  ;;
3294                 cortex-r*)                               subarch=armv7r  ;;
3295                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3296                 arm11*)                                  subarch=armv6   ;;
3297                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3298                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3299                 *)                             subarch=$(probe_arm_arch) ;;
3300             esac
3301         ;;
3302     esac
3303
3304     case "$subarch" in
3305         armv5t*)    enable fast_clz                ;;
3306         armv[6-8]*) enable fast_clz fast_unaligned ;;
3307     esac
3308
3309 elif enabled avr32; then
3310
3311     case $cpu in
3312         ap7[02]0[0-2])
3313             subarch="avr32_ap"
3314             cpuflags="-mpart=$cpu"
3315         ;;
3316         ap)
3317             subarch="avr32_ap"
3318             cpuflags="-march=$cpu"
3319         ;;
3320         uc3[ab]*)
3321             subarch="avr32_uc"
3322             cpuflags="-mcpu=$cpu"
3323         ;;
3324         uc)
3325             subarch="avr32_uc"
3326             cpuflags="-march=$cpu"
3327         ;;
3328     esac
3329
3330 elif enabled bfin; then
3331
3332     cpuflags="-mcpu=$cpu"
3333
3334 elif enabled mips; then
3335
3336     cpuflags="-march=$cpu"
3337
3338 elif enabled ppc; then
3339
3340     disable ldbrx
3341
3342     case $(tolower $cpu) in
3343         601|ppc601|powerpc601)
3344             cpuflags="-mcpu=601"
3345             disable altivec
3346         ;;
3347         603*|ppc603*|powerpc603*)
3348             cpuflags="-mcpu=603"
3349             disable altivec
3350         ;;
3351         604*|ppc604*|powerpc604*)
3352             cpuflags="-mcpu=604"
3353             disable altivec
3354         ;;
3355         g3|75*|ppc75*|powerpc75*)
3356             cpuflags="-mcpu=750"
3357             disable altivec
3358         ;;
3359         g4|745*|ppc745*|powerpc745*)
3360             cpuflags="-mcpu=7450"
3361             disable vsx
3362         ;;
3363         74*|ppc74*|powerpc74*)
3364             cpuflags="-mcpu=7400"
3365             disable vsx
3366         ;;
3367         g5|970|ppc970|powerpc970)
3368             cpuflags="-mcpu=970"
3369             disable vsx
3370         ;;
3371         power[3-6]*)
3372             cpuflags="-mcpu=$cpu"
3373             disable vsx
3374         ;;
3375         power[7-8]*)
3376             cpuflags="-mcpu=$cpu"
3377             enable ldbrx
3378         ;;
3379         cell)
3380             cpuflags="-mcpu=cell"
3381             enable ldbrx
3382             disable vsx
3383         ;;
3384         e500mc)
3385             cpuflags="-mcpu=e500mc"
3386             disable altivec
3387         ;;
3388         e500v2)
3389             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3390             disable altivec
3391             disable dcbzl
3392         ;;
3393         e500)
3394             cpuflags="-mcpu=8540 -mhard-float"
3395             disable altivec
3396             disable dcbzl
3397         ;;
3398     esac
3399
3400 elif enabled sparc; then
3401
3402     case $cpu in
3403         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3404             cpuflags="-mcpu=$cpu"
3405         ;;
3406         ultrasparc*|niagara[234])
3407             cpuflags="-mcpu=$cpu"
3408         ;;
3409     esac
3410
3411 elif enabled x86; then
3412
3413     case $cpu in
3414         i[345]86|pentium)
3415             cpuflags="-march=$cpu"
3416             disable i686
3417             disable mmx
3418         ;;
3419         # targets that do NOT support nopl and conditional mov (cmov)
3420         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3421             cpuflags="-march=$cpu"
3422             disable i686
3423         ;;
3424         # targets that do support nopl and conditional mov (cmov)
3425         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3426             cpuflags="-march=$cpu"
3427             enable i686
3428             enable fast_cmov
3429         ;;
3430         # targets that do support conditional mov but on which it's slow
3431         pentium4|pentium4m|prescott|nocona)
3432             cpuflags="-march=$cpu"
3433             enable i686
3434             disable fast_cmov
3435         ;;
3436     esac
3437
3438 fi
3439
3440 if [ "$cpu" != generic ]; then
3441     add_cflags  $cpuflags
3442     add_asflags $cpuflags
3443 fi
3444
3445 # compiler sanity check
3446 check_exec <<EOF
3447 int main(void){ return 0; }
3448 EOF
3449 if test "$?" != 0; then
3450     echo "$cc is unable to create an executable file."
3451     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3452         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3453         echo "Only do this if you know what cross compiling means."
3454     fi
3455     die "C compiler test failed."
3456 fi
3457
3458 add_cppflags -D_ISOC99_SOURCE
3459 check_cflags -std=c99
3460 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3461 #include <stdlib.h>
3462 EOF
3463 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3464 #include <stdlib.h>
3465 EOF
3466
3467 add_host_cppflags -D_ISOC99_SOURCE
3468 check_host_cflags -std=c99
3469 check_host_cflags -Wall
3470 check_host_cflags -O3
3471
3472 check_64bit(){
3473     arch32=$1
3474     arch64=$2
3475     expr=$3
3476     check_code cc "" "int test[2*($expr) - 1]" &&
3477         subarch=$arch64 || subarch=$arch32
3478 }
3479
3480 case "$arch" in
3481     aarch64|alpha|ia64)
3482         spic=$shared
3483     ;;
3484     mips)
3485         check_64bit mips mips64 '_MIPS_SIM > 1'
3486         spic=$shared
3487     ;;
3488     parisc)
3489         check_64bit parisc parisc64 'sizeof(void *) > 4'
3490         spic=$shared
3491     ;;
3492     ppc)
3493         check_64bit ppc ppc64 'sizeof(void *) > 4'
3494         spic=$shared
3495     ;;
3496     s390)
3497         check_64bit s390 s390x 'sizeof(void *) > 4'
3498         spic=$shared
3499     ;;
3500     sparc)
3501         check_64bit sparc sparc64 'sizeof(void *) > 4'
3502         spic=$shared
3503     ;;
3504     x86)
3505         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3506         if test "$subarch" = "x86_64"; then
3507             spic=$shared
3508         fi
3509     ;;
3510 esac
3511
3512 enable $subarch
3513 enabled spic && enable_weak pic
3514
3515 # OS specific
3516 case $target_os in
3517     aix)
3518         SHFLAGS=-shared
3519         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3520         enabled shared && add_ldflags -Wl,-brtl
3521         ;;
3522     android)
3523         disable symver
3524         enable section_data_rel_ro
3525         SLIB_INSTALL_NAME='$(SLIBNAME)'
3526         SLIB_INSTALL_LINKS=
3527         # soname not set on purpose
3528         SHFLAGS=-shared
3529         ;;
3530     haiku)
3531         prefix_default="/boot/common"
3532         network_extralibs="-lnetwork"
3533         host_libs=
3534         ;;
3535     sunos)
3536         SHFLAGS='-shared -Wl,-h,$$(@F)'
3537         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3538         network_extralibs="-lsocket -lnsl"
3539         # When using suncc to build, the Solaris linker will mark
3540         # an executable with each instruction set encountered by
3541         # the Solaris assembler.  As our libraries contain their own
3542         # guards for processor-specific code, instead suppress
3543         # generation of the HWCAPS ELF section on Solaris x86 only.
3544         enabled_all suncc x86 &&
3545             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3546             add_ldflags -Wl,-M,mapfile
3547         nm_default='nm -P -g'
3548         ;;
3549     netbsd)
3550         disable symver
3551         oss_indev_extralibs="-lossaudio"
3552         oss_outdev_extralibs="-lossaudio"
3553         ;;
3554     openbsd|bitrig)
3555         disable symver
3556         SHFLAGS='-shared'
3557         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3558         SLIB_INSTALL_LINKS=
3559         oss_indev_extralibs="-lossaudio"
3560         oss_outdev_extralibs="-lossaudio"
3561         ;;
3562     dragonfly)
3563         disable symver
3564         ;;
3565     freebsd)
3566         ;;
3567     bsd/os)
3568         add_extralibs -lpoll -lgnugetopt
3569         ;;
3570     darwin)
3571         enabled ppc && add_asflags -force_cpusubtype_ALL
3572         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3573         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3574         add_ldflags -Wl,-dynamic,-search_paths_first
3575         SLIBSUF=".dylib"
3576         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3577         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3578         objformat="macho"
3579         enabled x86_64 && objformat="macho64"
3580         enabled_any pic shared ||
3581             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3582         ;;
3583     mingw32*)
3584         if test $target_os = "mingw32ce"; then
3585             disable network
3586         else
3587             target_os=mingw32
3588         fi
3589         LIBTARGET=i386
3590         if enabled x86_64; then
3591             LIBTARGET="i386:x86-64"
3592         elif enabled arm; then
3593             LIBTARGET=arm-wince
3594         fi
3595         check_ldflags -Wl,--nxcompat
3596         check_ldflags -Wl,--dynamicbase
3597         shlibdir_default="$bindir_default"
3598         SLIBPREF=""
3599         SLIBSUF=".dll"
3600         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3601         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3602         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3603         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3604         SLIB_INSTALL_LINKS=
3605         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3606         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3607         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3608         objformat="win32"
3609         dlltool="${cross_prefix}dlltool"
3610         ranlib=:
3611         enable dos_paths
3612         ;;
3613     win32|win64)
3614         disable symver
3615         if enabled shared; then
3616             # Link to the import library instead of the normal static library
3617             # for shared libs.
3618             LD_LIB='%.lib'
3619             # Cannot build both shared and static libs with MSVC or icl.
3620             disable static
3621         fi
3622         shlibdir_default="$bindir_default"
3623         SLIBPREF=""
3624         SLIBSUF=".dll"
3625         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3626         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3627         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3628         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3629         SLIB_INSTALL_LINKS=
3630         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3631         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3632         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3633         objformat="win32"
3634         ranlib=:
3635         enable dos_paths
3636         ;;
3637     cygwin*)
3638         target_os=cygwin
3639         shlibdir_default="$bindir_default"
3640         SLIBPREF="cyg"
3641         SLIBSUF=".dll"
3642         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3643         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3644         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3645         SLIB_INSTALL_LINKS=
3646         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3647         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3648         objformat="win32"
3649         enable dos_paths
3650         ;;
3651     *-dos|freedos|opendos)
3652         network_extralibs="-lsocket"
3653         objformat="coff"
3654         enable dos_paths
3655         add_cppflags -U__STRICT_ANSI__
3656         ;;
3657     linux)
3658         enable dv1394
3659         enable section_data_rel_ro
3660         ;;
3661     irix*)
3662         target_os=irix
3663         ranlib="echo ignoring ranlib"
3664         ;;
3665     os/2*)
3666         ln_s="cp -f"
3667         objformat="aout"
3668         add_cppflags -D_GNU_SOURCE
3669         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3670         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3671         LIBSUF="_s.a"
3672         SLIBPREF=""
3673         SLIBSUF=".dll"
3674         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3675         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3676         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3677             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3678             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3679             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3680             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3681         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3682             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3683         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3684         enable dos_paths
3685         ;;
3686     gnu/kfreebsd)
3687         add_cppflags -D_BSD_SOURCE
3688         ;;
3689     gnu)
3690         ;;
3691     qnx)
3692         add_cppflags -D_QNX_SOURCE
3693         network_extralibs="-lsocket"
3694         ;;
3695     symbian)
3696         SLIBSUF=".dll"
3697         enable dos_paths
3698         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3699         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3700         add_ldflags -Wl,--target1-abs,--no-undefined \
3701                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3702                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3703         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3704                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3705                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3706         ;;
3707     osf1)
3708         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3709         ;;
3710     minix)
3711         ;;
3712     plan9)
3713         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3714                      -D_REENTRANT_SOURCE        \
3715                      -D_RESEARCH_SOURCE         \
3716                      -DFD_SETSIZE=96            \
3717                      -DHAVE_SOCK_OPTS
3718         add_compat strtod.o strtod=avpriv_strtod
3719         network_extralibs='-lbsd'
3720         exeobjs=compat/plan9/main.o
3721         cp_f='cp'
3722         ;;
3723     none)
3724         ;;
3725     *)
3726         die "Unknown OS '$target_os'."
3727         ;;
3728 esac
3729
3730 # determine libc flavour
3731
3732 probe_libc(){
3733     pfx=$1
3734     pfx_no_=${pfx%_}
3735     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3736     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3737         eval ${pfx}libc_type=uclibc
3738         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3739     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3740         eval ${pfx}libc_type=glibc
3741         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3742     # MinGW headers can be installed on Cygwin, so check for newlib first.
3743     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3744         eval ${pfx}libc_type=newlib
3745         add_${pfx}cppflags -U__STRICT_ANSI__
3746     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3747     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3748         eval ${pfx}libc_type=mingw64
3749         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3750         eval test \$${pfx_no_}cc_type = "gcc" &&
3751             add_${pfx}cppflags -D__printf__=__gnu_printf__
3752     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3753          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3754         eval ${pfx}libc_type=mingw32
3755         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3756             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3757             die "ERROR: MinGW32 runtime version must be >= 3.15."
3758         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3759         eval test \$${pfx_no_}cc_type = "gcc" &&
3760             add_${pfx}cppflags -D__printf__=__gnu_printf__
3761     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3762         eval ${pfx}libc_type=msvcrt
3763         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3764             if [ "$pfx" = host_ ]; then
3765                 add_host_cppflags -Dsnprintf=_snprintf
3766             else
3767                 add_compat strtod.o strtod=avpriv_strtod
3768                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3769                                              _snprintf=avpriv_snprintf  \
3770                                              vsnprintf=avpriv_vsnprintf
3771             fi
3772         fi
3773         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3774         # 0x601 by default unless something else is set by the user.
3775         # This can easily lead to us detecting functions only present
3776         # in such new versions and producing binaries requiring windows 7.0.
3777         # Therefore explicitly set the default to XP unless the user has
3778         # set something else on the command line.
3779         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3780             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3781     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3782         eval ${pfx}libc_type=klibc
3783     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3784         eval ${pfx}libc_type=bionic
3785     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3786         eval ${pfx}libc_type=solaris
3787         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3788     else
3789         eval ${pfx}libc_type=default
3790         add_${pfx}cppflags -D_DEFAULT_SOURCE
3791     fi
3792 }
3793
3794 probe_libc
3795 test -n "$libc_type" && enable libc_$libc_type
3796 probe_libc host_
3797 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3798
3799 case $libc_type in
3800     bionic)
3801         add_compat strtod.o strtod=avpriv_strtod
3802         ;;
3803 esac
3804
3805 # hacks for compiler/libc/os combinations
3806
3807 if enabled_all tms470 libc_glibc; then
3808     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3809     add_cppflags -D__USER_LABEL_PREFIX__=
3810     add_cppflags -D__builtin_memset=memset
3811     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3812     add_cflags   -pds=48    # incompatible redefinition of macro
3813 fi
3814
3815 if enabled_all ccc libc_glibc; then
3816     add_ldflags -Wl,-z,now  # calls to libots crash without this
3817 fi
3818
3819 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3820     add_cppflags '-I\$(SRC_PATH)/compat/float'
3821
3822 esc(){
3823     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3824 }
3825
3826 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3827
3828 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3829
3830 set_default $PATHS_LIST
3831 set_default nm
3832
3833 # we need to build at least one lib type
3834 if ! enabled_any static shared; then
3835     cat <<EOF
3836 At least one library type must be built.
3837 Specify --enable-static to build the static libraries or --enable-shared to
3838 build the shared libraries as well. To only build the shared libraries specify
3839 --disable-static in addition to --enable-shared.
3840 EOF
3841     exit 1;
3842 fi
3843
3844 die_license_disabled() {
3845     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3846 }
3847
3848 die_license_disabled gpl libcdio
3849 die_license_disabled gpl libx264
3850 die_license_disabled gpl libx265
3851 die_license_disabled gpl libxavs
3852 die_license_disabled gpl libxvid
3853 die_license_disabled gpl x11grab
3854
3855 die_license_disabled nonfree libfaac
3856 die_license_disabled nonfree libfdk_aac
3857 die_license_disabled nonfree nvenc
3858 die_license_disabled nonfree openssl
3859
3860 die_license_disabled version3 libopencore_amrnb
3861 die_license_disabled version3 libopencore_amrwb
3862 die_license_disabled version3 libvo_aacenc
3863 die_license_disabled version3 libvo_amrwbenc
3864
3865 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3866
3867 disabled optimizations || check_cflags -fomit-frame-pointer
3868
3869 enable_weak_pic() {
3870     disabled pic && return
3871     enable pic
3872     add_cppflags -DPIC
3873     case "$target_os" in
3874     mingw*|cygwin*)
3875         ;;
3876     *)
3877         add_cflags -fPIC
3878         ;;
3879     esac
3880     add_asflags  -fPIC
3881 }
3882
3883 enabled pic && enable_weak_pic
3884
3885 check_cc <<EOF || die "Symbol mangling check failed."
3886 int ff_extern;
3887 EOF
3888 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3889 extern_prefix=${sym%%ff_extern*}
3890
3891 check_cc <<EOF && enable_weak inline_asm
3892 void foo(void) { __asm__ volatile ("" ::); }
3893 EOF
3894
3895 _restrict=
3896 for restrict_keyword in restrict __restrict__ __restrict; do
3897     check_cc <<EOF && _restrict=$restrict_keyword && break
3898 void foo(char * $restrict_keyword p);
3899 EOF
3900 done
3901
3902 check_cc <<EOF && enable pragma_deprecated
3903 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3904 EOF
3905
3906 check_cc <<EOF && enable attribute_packed
3907 struct { int x; } __attribute__((packed)) x;
3908 EOF
3909
3910 check_cc <<EOF && enable attribute_may_alias
3911 union { int x; } __attribute__((may_alias)) x;
3912 EOF
3913
3914 check_cc <<EOF || die "endian test failed"
3915 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3916 EOF
3917 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3918
3919 check_gas() {
3920     log "check_gas using '$as' as AS"
3921     # :vararg is used on aarch64, arm and ppc altivec
3922     check_as <<EOF || return 1
3923 .macro m n, y:vararg=0
3924 \n: .int \y
3925 .endm
3926 m x
3927 EOF
3928     # .altmacro is only used in arm asm
3929     ! enabled arm || check_as <<EOF || return 1
3930 .altmacro
3931 EOF
3932     enable gnu_as
3933     return 0
3934 }
3935
3936 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3937     nogas=:
3938     enabled_any arm aarch64 && nogas=die
3939     enabled_all ppc altivec && nogas=warn
3940     as_noop=-v
3941
3942     case $as_type in
3943         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3944         gcc)  gaspp_as_type=gas ;;
3945         *)    gaspp_as_type=$as_type ;;
3946     esac
3947
3948     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3949
3950     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3951         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3952
3953     if ! check_gas ; then
3954         as=${gas:=$as}
3955         check_gas || \
3956             $nogas "GNU assembler not found, install/update gas-preprocessor"
3957     fi
3958
3959     check_as <<EOF && enable as_func
3960 .func test
3961 .endfunc
3962 EOF
3963 fi
3964
3965 check_inline_asm inline_asm_labels '"1:\n"'
3966
3967 if enabled aarch64; then
3968     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3969     # internal assembler in clang 3.3 does not support this instruction
3970     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3971     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3972
3973     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3974
3975 elif enabled alpha; then
3976
3977     check_cflags -mieee
3978
3979 elif enabled arm; then
3980
3981     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3982     enabled thumb && check_cflags -mthumb || check_cflags -marm
3983
3984     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3985         enable vfp_args
3986     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3987         case "${cross_prefix:-$cc}" in
3988             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3989             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3990 __asm__ (".eabi_attribute 28, 1");
3991 int main(void) { return 0; }
3992 EOF
3993         esac
3994         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3995     fi
3996
3997     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3998     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3999     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4000     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4001     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4002     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4003
4004     [ $target_os = linux ] || [ $target_os = android ] ||
4005         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4006             $ARCH_EXT_LIST_ARM
4007
4008     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4009
4010     check_as <<EOF && enable as_dn_directive
4011 ra .dn d0.i16
4012 .unreq ra
4013 EOF
4014
4015     # llvm's integrated assembler supports .object_arch from llvm 3.5
4016     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4017 .object_arch armv4
4018 EOF
4019
4020     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4021
4022 elif enabled mips; then
4023
4024     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4025
4026 elif enabled parisc; then
4027
4028     if enabled gcc; then
4029         case $($cc -dumpversion) in
4030             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4031         esac
4032     fi
4033
4034 elif enabled ppc; then
4035
4036     enable local_aligned_8 local_aligned_16
4037
4038     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4039     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4040     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4041     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4042
4043     # AltiVec flags: The FSF version of GCC differs from the Apple version
4044     if enabled altivec; then
4045         check_cflags -maltivec -mabi=altivec &&
4046         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4047         check_cflags -faltivec
4048
4049         # check if our compiler supports Motorola AltiVec C API
4050         check_cc <<EOF || disable altivec
4051 $inc_altivec_h
4052 int main(void) {
4053     vector signed int v1 = (vector signed int) { 0 };
4054     vector signed int v2 = (vector signed int) { 1 };
4055     v1 = vec_add(v1, v2);
4056     return 0;
4057 }
4058 EOF
4059
4060         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4061     fi
4062