af0128a2417aef3719f278a46f5ffa6c15b76d3e
[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
134 Hardware accelerators:
135   --enable-dxva2           enable DXVA2 code
136   --enable-vaapi           enable VAAPI code
137   --enable-vda             enable VDA code
138   --enable-vdpau           enable VDPAU code
139
140 Individual component options:
141   --disable-everything     disable all components listed below
142   --disable-encoder=NAME   disable encoder NAME
143   --enable-encoder=NAME    enable encoder NAME
144   --disable-encoders       disable all encoders
145   --disable-decoder=NAME   disable decoder NAME
146   --enable-decoder=NAME    enable decoder NAME
147   --disable-decoders       disable all decoders
148   --disable-hwaccel=NAME   disable hwaccel NAME
149   --enable-hwaccel=NAME    enable hwaccel NAME
150   --disable-hwaccels       disable all hwaccels
151   --disable-muxer=NAME     disable muxer NAME
152   --enable-muxer=NAME      enable muxer NAME
153   --disable-muxers         disable all muxers
154   --disable-demuxer=NAME   disable demuxer NAME
155   --enable-demuxer=NAME    enable demuxer NAME
156   --disable-demuxers       disable all demuxers
157   --enable-parser=NAME     enable parser NAME
158   --disable-parser=NAME    disable parser NAME
159   --disable-parsers        disable all parsers
160   --enable-bsf=NAME        enable bitstream filter NAME
161   --disable-bsf=NAME       disable bitstream filter NAME
162   --disable-bsfs           disable all bitstream filters
163   --enable-protocol=NAME   enable protocol NAME
164   --disable-protocol=NAME  disable protocol NAME
165   --disable-protocols      disable all protocols
166   --enable-indev=NAME      enable input device NAME
167   --disable-indev=NAME     disable input device NAME
168   --disable-indevs         disable input devices
169   --enable-outdev=NAME     enable output device NAME
170   --disable-outdev=NAME    disable output device NAME
171   --disable-outdevs        disable output devices
172   --disable-devices        disable all devices
173   --enable-filter=NAME     enable filter NAME
174   --disable-filter=NAME    disable filter NAME
175   --disable-filters        disable all filters
176
177 External library support:
178   --enable-avisynth        enable reading of AviSynth script files [no]
179   --enable-bzlib           enable bzlib [autodetect]
180   --enable-frei0r          enable frei0r video filtering
181   --enable-gnutls          enable gnutls [no]
182   --enable-libbs2b         enable bs2b DSP library [no]
183   --enable-libcdio         enable audio CD grabbing with libcdio
184   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
185                            and libraw1394 [no]
186   --enable-libfaac         enable AAC encoding via libfaac [no]
187   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
188   --enable-libfreetype     enable libfreetype [no]
189   --enable-libgsm          enable GSM de/encoding via libgsm [no]
190   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
191   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
192   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
193   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
194   --enable-libopencv       enable video filtering via libopencv [no]
195   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
196   --enable-libopus         enable Opus de/encoding via libopus [no]
197   --enable-libpulse        enable Pulseaudio input via libpulse [no]
198   --enable-librtmp         enable RTMP[E] support via librtmp [no]
199   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
200   --enable-libspeex        enable Speex de/encoding via libspeex [no]
201   --enable-libtheora       enable Theora encoding via libtheora [no]
202   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
203   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
204   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
205   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
206   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
207   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
208   --enable-libwebp         enable WebP encoding via libwebp [no]
209   --enable-libx264         enable H.264 encoding via x264 [no]
210   --enable-libx265         enable HEVC encoding via x265 [no]
211   --enable-libxavs         enable AVS encoding via xavs [no]
212   --enable-libxvid         enable Xvid encoding via xvidcore,
213                            native MPEG-4/Xvid encoder exists [no]
214   --enable-openssl         enable openssl [no]
215   --enable-x11grab         enable X11 grabbing [no]
216   --enable-zlib            enable zlib [autodetect]
217
218 Toolchain options:
219   --arch=ARCH              select architecture [$arch]
220   --cpu=CPU                select the minimum required CPU (affects
221                            instruction selection, may crash on older CPUs)
222   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
223   --enable-cross-compile   assume a cross-compiler is used
224   --sysroot=PATH           root of cross-build tree
225   --sysinclude=PATH        location of cross-build system headers
226   --target-os=OS           compiler targets OS [$target_os]
227   --target-exec=CMD        command to run executables on target
228   --target-path=DIR        path to view of build directory on target
229   --target-samples=DIR     path to samples directory on target
230   --toolchain=NAME         set tool defaults according to NAME
231   --nm=NM                  use nm tool
232   --ar=AR                  use archive tool AR [$ar_default]
233   --as=AS                  use assembler AS [$as_default]
234   --cc=CC                  use C compiler CC [$cc_default]
235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
236   --ld=LD                  use linker LD
237   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
239   --host-cc=HOSTCC         use host C compiler HOSTCC
240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
242   --host-ld=HOSTLD         use host linker HOSTLD
243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
244   --host-libs=HLIBS        use libs HLIBS when linking for host
245   --host-os=OS             compiler host OS [$target_os]
246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
248   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
249   --extra-libs=ELIBS       add ELIBS [$ELIBS]
250   --extra-version=STRING   version string suffix []
251   --optflags=OPTFLAGS      override optimization-related compiler flags
252   --build-suffix=SUFFIX    library name suffix []
253   --enable-pic             build position-independent code
254   --enable-thumb           compile for Thumb instruction set
255   --enable-lto             use link-time optimization
256
257 Advanced options (experts only):
258   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
259   --disable-symver         disable symbol versioning
260   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
261   --disable-safe-bitstream-reader
262                            disable buffer boundary checking in bitreaders
263                            (faster, but may crash)
264   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
265   --enable-sram            allow use of on-chip SRAM
266
267 Optimization options (experts only):
268   --disable-asm            disable all assembly optimizations
269   --disable-altivec        disable AltiVec optimizations
270   --disable-amd3dnow       disable 3DNow! optimizations
271   --disable-amd3dnowext    disable 3DNow! extended optimizations
272   --disable-mmx            disable MMX optimizations
273   --disable-mmxext         disable MMXEXT optimizations
274   --disable-sse            disable SSE optimizations
275   --disable-sse2           disable SSE2 optimizations
276   --disable-sse3           disable SSE3 optimizations
277   --disable-ssse3          disable SSSE3 optimizations
278   --disable-sse4           disable SSE4 optimizations
279   --disable-sse42          disable SSE4.2 optimizations
280   --disable-avx            disable AVX optimizations
281   --disable-xop            disable XOP optimizations
282   --disable-fma3           disable FMA3 optimizations
283   --disable-fma4           disable FMA4 optimizations
284   --disable-avx2           disable AVX2 optimizations
285   --disable-armv5te        disable armv5te optimizations
286   --disable-armv6          disable armv6 optimizations
287   --disable-armv6t2        disable armv6t2 optimizations
288   --disable-vfp            disable VFP optimizations
289   --disable-neon           disable NEON optimizations
290   --disable-inline-asm     disable use of inline assembly
291   --disable-yasm           disable use of nasm/yasm assembly
292
293 Developer options (useful when working on Libav itself):
294   --disable-debug          disable debugging symbols
295   --enable-debug=LEVEL     set the debug level [$debuglevel]
296   --disable-optimizations  disable compiler optimizations
297   --enable-extra-warnings  enable more compiler warnings
298   --samples=PATH           location of test samples for FATE, if not set use
299                            \$LIBAV_SAMPLES at make invocation time.
300   --enable-neon-clobber-test check NEON registers for clobbering (should be
301                            used only for debugging purposes)
302   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
303                            should be used only for debugging purposes)
304   --enable-random          randomly enable/disable components
305   --disable-random
306   --enable-random=LIST     randomly enable/disable specific components or
307   --disable-random=LIST    component groups. LIST is a comma-separated list
308                            of NAME[:PROB] entries where NAME is a component
309                            (group) and PROB the probability associated with
310                            NAME (default 0.5).
311   --random-seed=VALUE      seed value for --enable/disable-random
312
313 NOTE: Object files are built at the place where configure is launched.
314 EOF
315   exit 0
316 }
317
318 quotes='""'
319
320 log(){
321     echo "$@" >> $logfile
322 }
323
324 log_file(){
325     log BEGIN $1
326     pr -n -t $1 >> $logfile
327     log END $1
328 }
329
330 echolog(){
331     log "$@"
332     echo "$@"
333 }
334
335 warn(){
336     log "WARNING: $*"
337     WARNINGS="${WARNINGS}WARNING: $*\n"
338 }
339
340 die(){
341     echolog "$@"
342     cat <<EOF
343
344 If you think configure made a mistake, make sure you are using the latest
345 version from Git.  If the latest version fails, report the problem to the
346 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
347 EOF
348     if disabled logging; then
349         cat <<EOF
350 Rerun configure with logging enabled (do not use --disable-logging), and
351 include the log this produces with your report.
352 EOF
353     else
354         cat <<EOF
355 Include the log file "$logfile" produced by configure as this will help
356 solving the problem.
357 EOF
358     fi
359     exit 1
360 }
361
362 # Avoid locale weirdness, besides we really just want to translate ASCII.
363 toupper(){
364     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
365 }
366
367 tolower(){
368     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
369 }
370
371 c_escape(){
372     echo "$*" | sed 's/["\\]/\\\0/g'
373 }
374
375 sh_quote(){
376     v=$(echo "$1" | sed "s/'/'\\\\''/g")
377     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
378     echo "$v"
379 }
380
381 cleanws(){
382     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
383 }
384
385 filter(){
386     pat=$1
387     shift
388     for v; do
389         eval "case $v in $pat) echo $v ;; esac"
390     done
391 }
392
393 filter_out(){
394     pat=$1
395     shift
396     for v; do
397         eval "case $v in $pat) ;; *) echo $v ;; esac"
398     done
399 }
400
401 map(){
402     m=$1
403     shift
404     for v; do eval $m; done
405 }
406
407 add_suffix(){
408     suffix=$1
409     shift
410     for v; do echo ${v}${suffix}; done
411 }
412
413 set_all(){
414     value=$1
415     shift
416     for var in $*; do
417         eval $var=$value
418     done
419 }
420
421 set_weak(){
422     value=$1
423     shift
424     for var; do
425         eval : \${$var:=$value}
426     done
427 }
428
429 sanitize_var_name(){
430     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
431 }
432
433 set_safe(){
434     var=$1
435     shift
436     eval $(sanitize_var_name "$var")='$*'
437 }
438
439 get_safe(){
440     eval echo \$$(sanitize_var_name "$1")
441 }
442
443 pushvar(){
444     for pvar in $*; do
445         eval level=\${${pvar}_level:=0}
446         eval ${pvar}_${level}="\$$pvar"
447         eval ${pvar}_level=$(($level+1))
448     done
449 }
450
451 popvar(){
452     for pvar in $*; do
453         eval level=\${${pvar}_level:-0}
454         test $level = 0 && continue
455         eval level=$(($level-1))
456         eval $pvar="\${${pvar}_${level}}"
457         eval ${pvar}_level=$level
458         eval unset ${pvar}_${level}
459     done
460 }
461
462 enable(){
463     set_all yes $*
464 }
465
466 disable(){
467     set_all no $*
468 }
469
470 enable_weak(){
471     set_weak yes $*
472 }
473
474 disable_weak(){
475     set_weak no $*
476 }
477
478 enable_safe(){
479     for var; do
480         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
481     done
482 }
483
484 disable_safe(){
485     for var; do
486         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
487     done
488 }
489
490 do_enable_deep(){
491     for var; do
492         enabled $var && continue
493         eval sel="\$${var}_select"
494         eval sgs="\$${var}_suggest"
495         pushvar var sgs
496         enable_deep $sel
497         popvar sgs
498         enable_deep_weak $sgs
499         popvar var
500     done
501 }
502
503 enable_deep(){
504     do_enable_deep $*
505     enable $*
506 }
507
508 enable_deep_weak(){
509     for var; do
510         disabled $var && continue
511         pushvar var
512         do_enable_deep $var
513         popvar var
514         enable_weak $var
515     done
516 }
517
518 enabled(){
519     test "${1#!}" = "$1" && op== || op=!=
520     eval test "x\$${1#!}" $op "xyes"
521 }
522
523 disabled(){
524     test "${1#!}" = "$1" && op== || op=!=
525     eval test "x\$${1#!}" $op "xno"
526 }
527
528 enabled_all(){
529     for opt; do
530         enabled $opt || return 1
531     done
532 }
533
534 disabled_all(){
535     for opt; do
536         disabled $opt || return 1
537     done
538 }
539
540 enabled_any(){
541     for opt; do
542         enabled $opt && return 0
543     done
544 }
545
546 disabled_any(){
547     for opt; do
548         disabled $opt && return 0
549     done
550     return 1
551 }
552
553 set_default(){
554     for opt; do
555         eval : \${$opt:=\$${opt}_default}
556     done
557 }
558
559 is_in(){
560     value=$1
561     shift
562     for var in $*; do
563         [ $var = $value ] && return 0
564     done
565     return 1
566 }
567
568 do_check_deps(){
569     for cfg; do
570         cfg="${cfg#!}"
571         enabled ${cfg}_checking && die "Circular dependency for $cfg."
572         disabled ${cfg}_checking && continue
573         enable ${cfg}_checking
574         append allopts $cfg
575
576         eval dep_all="\$${cfg}_deps"
577         eval dep_any="\$${cfg}_deps_any"
578         eval dep_sel="\$${cfg}_select"
579         eval dep_sgs="\$${cfg}_suggest"
580         eval dep_ifa="\$${cfg}_if"
581         eval dep_ifn="\$${cfg}_if_any"
582
583         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
585         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
586
587         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
588         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
589         enabled_all  $dep_all || disable $cfg
590         enabled_any  $dep_any || disable $cfg
591         disabled_any $dep_sel && disable $cfg
592
593         if enabled $cfg; then
594             enable_deep $dep_sel
595             enable_deep_weak $dep_sgs
596         fi
597
598         disable ${cfg}_checking
599     done
600 }
601
602 check_deps(){
603     unset allopts
604
605     do_check_deps "$@"
606
607     for cfg in $allopts; do
608         enabled $cfg || continue
609         eval dep_extralibs="\$${cfg}_extralibs"
610         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
611     done
612 }
613
614 print_config(){
615     pfx=$1
616     files=$2
617     shift 2
618     map 'eval echo "$v \${$v:-no}"' "$@" |
619     awk "BEGIN { split(\"$files\", files) }
620         {
621             c = \"$pfx\" toupper(\$1);
622             v = \$2;
623             sub(/yes/, 1, v);
624             sub(/no/,  0, v);
625             for (f in files) {
626                 file = files[f];
627                 if (file ~ /\\.h\$/) {
628                     printf(\"#define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.asm\$/) {
630                     printf(\"%%define %s %d\\n\", c, v) >>file;
631                 } else if (file ~ /\\.mak\$/) {
632                     n = -v ? \"\" : \"!\";
633                     printf(\"%s%s=yes\\n\", n, c) >>file;
634                 }
635             }
636         }"
637 }
638
639 print_enabled(){
640     suf=$1
641     shift
642     for v; do
643         enabled $v && printf "%s\n" ${v%$suf};
644     done
645 }
646
647 append(){
648     var=$1
649     shift
650     eval "$var=\"\$$var $*\""
651 }
652
653 prepend(){
654     var=$1
655     shift
656     eval "$var=\"$* \$$var\""
657 }
658
659 unique(){
660     var=$1
661     uniq_list=""
662     for tok in $(eval echo \$$var); do
663         uniq_list="$(filter_out $tok $uniq_list) $tok"
664     done
665     eval "$var=\"${uniq_list}\""
666 }
667
668 add_cppflags(){
669     append CPPFLAGS "$@"
670 }
671
672 add_cflags(){
673     append CFLAGS $($cflags_filter "$@")
674 }
675
676 add_asflags(){
677     append ASFLAGS $($asflags_filter "$@")
678 }
679
680 add_ldflags(){
681     append LDFLAGS $($ldflags_filter "$@")
682 }
683
684 add_ldexeflags(){
685     append LDEXEFLAGS $($ldflags_filter "$@")
686 }
687
688 add_stripflags(){
689     append STRIPFLAGS "$@"
690 }
691
692 add_extralibs(){
693     prepend extralibs $($ldflags_filter "$@")
694 }
695
696 add_host_cppflags(){
697     append host_cppflags "$@"
698 }
699
700 add_host_cflags(){
701     append host_cflags $($host_cflags_filter "$@")
702 }
703
704 add_host_ldflags(){
705     append host_ldflags $($host_ldflags_filter "$@")
706 }
707
708 add_compat(){
709     append compat_objs $1
710     shift
711     map 'add_cppflags -D$v' "$@"
712 }
713
714 check_cmd(){
715     log "$@"
716     "$@" >> $logfile 2>&1
717 }
718
719 cc_o(){
720     eval printf '%s\\n' $CC_O
721 }
722
723 cc_e(){
724     eval printf '%s\\n' $CC_E
725 }
726
727 check_cc(){
728     log check_cc "$@"
729     cat > $TMPC
730     log_file $TMPC
731     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
732 }
733
734 check_cpp(){
735     log check_cpp "$@"
736     cat > $TMPC
737     log_file $TMPC
738     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
739 }
740
741 as_o(){
742     eval printf '%s\\n' $AS_O
743 }
744
745 check_as(){
746     log check_as "$@"
747     cat > $TMPS
748     log_file $TMPS
749     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
750 }
751
752 check_inline_asm(){
753     log check_inline_asm "$@"
754     name="$1"
755     code="$2"
756     shift 2
757     disable $name
758     check_cc "$@" <<EOF && enable $name
759 void foo(void){ __asm__ volatile($code); }
760 EOF
761 }
762
763 check_insn(){
764     log check_insn "$@"
765     check_inline_asm ${1}_inline "\"$2\""
766     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
767 }
768
769 check_yasm(){
770     log check_yasm "$@"
771     echo "$1" > $TMPS
772     log_file $TMPS
773     shift 1
774     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
775 }
776
777 ld_o(){
778     eval printf '%s\\n' $LD_O
779 }
780
781 check_ld(){
782     log check_ld "$@"
783     flags=$(filter_out '-l*' "$@")
784     libs=$(filter '-l*' "$@")
785     check_cc $($cflags_filter $flags) || return
786     flags=$($ldflags_filter $flags)
787     libs=$($ldflags_filter $libs)
788     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
789 }
790
791 print_include(){
792     hdr=$1
793     test "${hdr%.h}" = "${hdr}" &&
794         echo "#include $hdr"    ||
795         echo "#include <$hdr>"
796 }
797
798 check_code(){
799     log check_code "$@"
800     check=$1
801     headers=$2
802     code=$3
803     shift 3
804     {
805         for hdr in $headers; do
806             print_include $hdr
807         done
808         echo "int main(void) { $code; return 0; }"
809     } | check_$check "$@"
810 }
811
812 check_cppflags(){
813     log check_cppflags "$@"
814     check_cc "$@" <<EOF && append CPPFLAGS "$@"
815 int x;
816 EOF
817 }
818
819 test_cflags(){
820     log test_cflags "$@"
821     set -- $($cflags_filter "$@")
822     check_cc "$@" <<EOF
823 int x;
824 EOF
825 }
826
827 check_cflags(){
828     log check_cflags "$@"
829     test_cflags "$@" && add_cflags "$@"
830 }
831
832 test_ldflags(){
833     log test_ldflags "$@"
834     check_ld "$@" <<EOF
835 int main(void){ return 0; }
836 EOF
837 }
838
839 check_ldflags(){
840     log check_ldflags "$@"
841     test_ldflags "$@" && add_ldflags "$@"
842 }
843
844 test_stripflags(){
845     log test_stripflags "$@"
846     # call check_cc to get a fresh TMPO
847     check_cc <<EOF
848 int main(void) { return 0; }
849 EOF
850     check_cmd $strip $STRIPFLAGS "$@" $TMPO
851 }
852
853 check_stripflags(){
854     log check_stripflags "$@"
855     test_stripflags "$@" && add_stripflags "$@"
856 }
857
858 check_header(){
859     log check_header "$@"
860     header=$1
861     shift
862     disable_safe $header
863     check_cpp "$@" <<EOF && enable_safe $header
864 #include <$header>
865 int x;
866 EOF
867 }
868
869 check_func(){
870     log check_func "$@"
871     func=$1
872     shift
873     disable $func
874     check_ld "$@" <<EOF && enable $func
875 extern int $func();
876 int main(void){ $func(); }
877 EOF
878 }
879
880 check_mathfunc(){
881     log check_mathfunc "$@"
882     func=$1
883     narg=$2
884     shift 2
885     test $narg = 2 && args="f, g" || args="f"
886     disable $func
887     check_ld "$@" <<EOF && enable $func
888 #include <math.h>
889 float foo(float f, float g) { return $func($args); }
890 int main(void){ return 0; }
891 EOF
892 }
893
894 check_func_headers(){
895     log check_func_headers "$@"
896     headers=$1
897     funcs=$2
898     shift 2
899     {
900         for hdr in $headers; do
901             print_include $hdr
902         done
903         for func in $funcs; do
904             echo "long check_$func(void) { return (long) $func; }"
905         done
906         echo "int main(void) { return 0; }"
907     } | check_ld "$@" && enable $funcs && enable_safe $headers
908 }
909
910 check_cpp_condition(){
911     log check_cpp_condition "$@"
912     header=$1
913     condition=$2
914     shift 2
915     check_cpp "$@" <<EOF
916 #include <$header>
917 #if !($condition)
918 #error "unsatisfied condition: $condition"
919 #endif
920 EOF
921 }
922
923 check_lib(){
924     log check_lib "$@"
925     header="$1"
926     func="$2"
927     shift 2
928     check_header $header && check_func $func "$@" && add_extralibs "$@"
929 }
930
931 check_lib2(){
932     log check_lib2 "$@"
933     headers="$1"
934     funcs="$2"
935     shift 2
936     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
937 }
938
939 check_pkg_config(){
940     log check_pkg_config "$@"
941     pkg="$1"
942     headers="$2"
943     funcs="$3"
944     shift 3
945     check_cmd $pkg_config --exists --print-errors $pkg || return
946     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
947     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
948     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
949         set_safe ${pkg}_cflags $pkg_cflags   &&
950         set_safe ${pkg}_libs   $pkg_libs
951 }
952
953 check_exec(){
954     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
955 }
956
957 check_exec_crash(){
958     code=$(cat)
959
960     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
961     # are safe but may not be available everywhere.  Thus we use
962     # raise(SIGTERM) instead.  The check is run in a subshell so we
963     # can redirect the "Terminated" message from the shell.  SIGBUS
964     # is not defined by standard C so it is used conditionally.
965
966     (check_exec "$@") >> $logfile 2>&1 <<EOF
967 #include <signal.h>
968 static void sighandler(int sig){
969     raise(SIGTERM);
970 }
971 int foo(void){
972     $code
973 }
974 int (*func_ptr)(void) = foo;
975 int main(void){
976     signal(SIGILL, sighandler);
977     signal(SIGFPE, sighandler);
978     signal(SIGSEGV, sighandler);
979 #ifdef SIGBUS
980     signal(SIGBUS, sighandler);
981 #endif
982     return func_ptr();
983 }
984 EOF
985 }
986
987 check_type(){
988     log check_type "$@"
989     headers=$1
990     type=$2
991     shift 2
992     disable_safe "$type"
993     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
994 }
995
996 check_struct(){
997     log check_struct "$@"
998     headers=$1
999     struct=$2
1000     member=$3
1001     shift 3
1002     disable_safe "${struct}_${member}"
1003     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1004         enable_safe "${struct}_${member}"
1005 }
1006
1007 check_builtin(){
1008     log check_builtin "$@"
1009     name=$1
1010     headers=$2
1011     builtin=$3
1012     shift 3
1013     disable "$name"
1014     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1015 }
1016
1017 check_compile_assert(){
1018     log check_compile_assert "$@"
1019     name=$1
1020     headers=$2
1021     condition=$3
1022     shift 3
1023     disable "$name"
1024     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1025 }
1026
1027 require(){
1028     name="$1"
1029     header="$2"
1030     func="$3"
1031     shift 3
1032     check_lib $header $func "$@" || die "ERROR: $name not found"
1033 }
1034
1035 require2(){
1036     name="$1"
1037     headers="$2"
1038     func="$3"
1039     shift 3
1040     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1041 }
1042
1043 require_pkg_config(){
1044     pkg="$1"
1045     check_pkg_config "$@" || die "ERROR: $pkg not found"
1046     add_cflags    $(get_safe ${pkg}_cflags)
1047     add_extralibs $(get_safe ${pkg}_libs)
1048 }
1049
1050 hostcc_e(){
1051     eval printf '%s\\n' $HOSTCC_E
1052 }
1053
1054 hostcc_o(){
1055     eval printf '%s\\n' $HOSTCC_O
1056 }
1057
1058 check_host_cc(){
1059     log check_host_cc "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1063 }
1064
1065 check_host_cpp(){
1066     log check_host_cpp "$@"
1067     cat > $TMPC
1068     log_file $TMPC
1069     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1070 }
1071
1072 check_host_cppflags(){
1073     log check_host_cppflags "$@"
1074     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1075 int x;
1076 EOF
1077 }
1078
1079 check_host_cflags(){
1080     log check_host_cflags "$@"
1081     set -- $($host_cflags_filter "$@")
1082     check_host_cc "$@" <<EOF && append host_cflags "$@"
1083 int x;
1084 EOF
1085 }
1086
1087 check_host_cpp_condition(){
1088     log check_host_cpp_condition "$@"
1089     header=$1
1090     condition=$2
1091     shift 2
1092     check_host_cpp "$@" <<EOF
1093 #include <$header>
1094 #if !($condition)
1095 #error "unsatisfied condition: $condition"
1096 #endif
1097 EOF
1098 }
1099
1100 apply(){
1101     file=$1
1102     shift
1103     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1104 }
1105
1106 cp_if_changed(){
1107     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1108     mkdir -p "$(dirname $2)"
1109     $cp_f "$1" "$2"
1110 }
1111
1112 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1113 # system-dependent things.
1114
1115 COMPONENT_LIST="
1116     bsfs
1117     decoders
1118     demuxers
1119     encoders
1120     filters
1121     hwaccels
1122     indevs
1123     muxers
1124     outdevs
1125     parsers
1126     protocols
1127 "
1128
1129 EXAMPLE_LIST="
1130     avcodec_example
1131     filter_audio_example
1132     metadata_example
1133     output_example
1134     transcode_aac_example
1135 "
1136
1137 EXTERNAL_LIBRARY_LIST="
1138     avisynth
1139     bzlib
1140     frei0r
1141     gnutls
1142     libbs2b
1143     libcdio
1144     libdc1394
1145     libfaac
1146     libfdk_aac
1147     libfontconfig
1148     libfreetype
1149     libgsm
1150     libilbc
1151     libmp3lame
1152     libopencore_amrnb
1153     libopencore_amrwb
1154     libopencv
1155     libopenjpeg
1156     libopus
1157     libpulse
1158     librtmp
1159     libschroedinger
1160     libspeex
1161     libtheora
1162     libtwolame
1163     libvo_aacenc
1164     libvo_amrwbenc
1165     libvorbis
1166     libvpx
1167     libwavpack
1168     libwebp
1169     libx264
1170     libx265
1171     libxavs
1172     libxvid
1173     openssl
1174     x11grab
1175     zlib
1176 "
1177
1178 FEATURE_LIST="
1179     gray
1180     hardcoded_tables
1181     runtime_cpudetect
1182     safe_bitstream_reader
1183     shared
1184     small
1185     sram
1186     static
1187     swscale_alpha
1188 "
1189
1190 HWACCEL_LIST="
1191     dxva2
1192     vaapi
1193     vda
1194     vdpau
1195 "
1196
1197 LIBRARY_LIST="
1198     avcodec
1199     avdevice
1200     avfilter
1201     avformat
1202     avresample
1203     avutil
1204     swscale
1205 "
1206
1207 LICENSE_LIST="
1208     gpl
1209     nonfree
1210     version3
1211 "
1212
1213 PROGRAM_LIST="
1214     avconv
1215     avplay
1216     avprobe
1217 "
1218
1219 SUBSYSTEM_LIST="
1220     dct
1221     doc
1222     error_resilience
1223     fft
1224     lsp
1225     lzo
1226     mdct
1227     network
1228     rdft
1229 "
1230
1231 CONFIG_LIST="
1232     $COMPONENT_LIST
1233     $EXAMPLE_LIST
1234     $EXTERNAL_LIBRARY_LIST
1235     $FEATURE_LIST
1236     $HWACCEL_LIST
1237     $LICENSE_LIST
1238     $LIBRARY_LIST
1239     $PROGRAM_LIST
1240     $SUBSYSTEM_LIST
1241     memalign_hack
1242     neon_clobber_test
1243     pic
1244     pod2man
1245     texi2html
1246     thumb
1247     xmm_clobber_test
1248 "
1249
1250 THREADS_LIST="
1251     pthreads
1252     w32threads
1253 "
1254
1255 ATOMICS_LIST="
1256     atomics_gcc
1257     atomics_suncc
1258     atomics_win32
1259 "
1260
1261 ARCH_LIST="
1262     aarch64
1263     alpha
1264     arm
1265     avr32
1266     avr32_ap
1267     avr32_uc
1268     bfin
1269     ia64
1270     m68k
1271     mips
1272     mips64
1273     parisc
1274     ppc
1275     ppc64
1276     s390
1277     sh4
1278     sparc
1279     sparc64
1280     tilegx
1281     tilepro
1282     tomi
1283     x86
1284     x86_32
1285     x86_64
1286 "
1287
1288 ARCH_EXT_LIST_ARM="
1289     armv5te
1290     armv6
1291     armv6t2
1292     armv8
1293     neon
1294     vfp
1295     vfpv3
1296 "
1297
1298 ARCH_EXT_LIST_X86_SIMD="
1299     amd3dnow
1300     amd3dnowext
1301     avx
1302     avx2
1303     fma3
1304     fma4
1305     mmx
1306     mmxext
1307     sse
1308     sse2
1309     sse3
1310     sse4
1311     sse42
1312     ssse3
1313     xop
1314 "
1315
1316 ARCH_EXT_LIST_PPC="
1317     altivec
1318     dcbzl
1319     ldbrx
1320     ppc4xx
1321 "
1322
1323 ARCH_EXT_LIST_X86="
1324     $ARCH_EXT_LIST_X86_SIMD
1325     cpunop
1326     i686
1327 "
1328
1329 ARCH_EXT_LIST="
1330     $ARCH_EXT_LIST_ARM
1331     $ARCH_EXT_LIST_PPC
1332     $ARCH_EXT_LIST_X86
1333     loongson
1334     vis
1335 "
1336
1337 ARCH_FEATURES="
1338     aligned_stack
1339     fast_64bit
1340     fast_clz
1341     fast_cmov
1342     local_aligned_8
1343     local_aligned_16
1344     simd_align_16
1345 "
1346
1347 BUILTIN_LIST="
1348     atomic_cas_ptr
1349     machine_rw_barrier
1350     MemoryBarrier
1351     mm_empty
1352     rdtsc
1353     sync_val_compare_and_swap
1354 "
1355 HAVE_LIST_CMDLINE="
1356     inline_asm
1357     symver
1358     yasm
1359 "
1360
1361 HAVE_LIST_PUB="
1362     bigendian
1363     fast_unaligned
1364 "
1365
1366 HEADERS_LIST="
1367     alsa_asoundlib_h
1368     altivec_h
1369     arpa_inet_h
1370     cdio_paranoia_h
1371     cdio_paranoia_paranoia_h
1372     dev_bktr_ioctl_bt848_h
1373     dev_bktr_ioctl_meteor_h
1374     dev_ic_bt8xx_h
1375     dev_video_bktr_ioctl_bt848_h
1376     dev_video_meteor_ioctl_meteor_h
1377     direct_h
1378     dlfcn_h
1379     dxva_h
1380     gsm_h
1381     io_h
1382     mach_mach_time_h
1383     machine_ioctl_bt848_h
1384     machine_ioctl_meteor_h
1385     malloc_h
1386     poll_h
1387     sndio_h
1388     soundcard_h
1389     sys_mman_h
1390     sys_param_h
1391     sys_resource_h
1392     sys_select_h
1393     sys_soundcard_h
1394     sys_time_h
1395     sys_un_h
1396     sys_videoio_h
1397     unistd_h
1398     windows_h
1399     winsock2_h
1400 "
1401
1402 INTRINSICS_LIST="
1403     intrinsics_neon
1404 "
1405
1406 MATH_FUNCS="
1407     atanf
1408     atan2f
1409     cbrtf
1410     cosf
1411     exp2
1412     exp2f
1413     expf
1414     isinf
1415     isnan
1416     ldexpf
1417     llrint
1418     llrintf
1419     log2
1420     log2f
1421     log10f
1422     lrint
1423     lrintf
1424     powf
1425     rint
1426     round
1427     roundf
1428     sinf
1429     trunc
1430     truncf
1431 "
1432
1433 SYSTEM_FUNCS="
1434     aligned_malloc
1435     clock_gettime
1436     closesocket
1437     CommandLineToArgvW
1438     CoTaskMemFree
1439     CryptGenRandom
1440     dlopen
1441     fcntl
1442     flt_lim
1443     fork
1444     getaddrinfo
1445     gethrtime
1446     getopt
1447     GetProcessAffinityMask
1448     GetProcessMemoryInfo
1449     GetProcessTimes
1450     getrusage
1451     getservbyport
1452     GetSystemTimeAsFileTime
1453     gettimeofday
1454     inet_aton
1455     isatty
1456     jack_port_get_latency_range
1457     localtime_r
1458     mach_absolute_time
1459     MapViewOfFile
1460     memalign
1461     mkstemp
1462     mmap
1463     mprotect
1464     nanosleep
1465     posix_memalign
1466     sched_getaffinity
1467     SetConsoleTextAttribute
1468     setmode
1469     setrlimit
1470     Sleep
1471     strerror_r
1472     strptime
1473     sysconf
1474     sysctl
1475     usleep
1476     VirtualAlloc
1477 "
1478
1479 TOOLCHAIN_FEATURES="
1480     as_dn_directive
1481     as_func
1482     asm_mod_q
1483     attribute_may_alias
1484     attribute_packed
1485     ebp_available
1486     ebx_available
1487     gnu_as
1488     ibm_asm
1489     inline_asm_labels
1490     pragma_deprecated
1491     symver_asm_label
1492     symver_gnu_asm
1493     vfp_args
1494     xform_asm
1495     xmm_clobbers
1496 "
1497
1498 TYPES_LIST="
1499     socklen_t
1500     struct_addrinfo
1501     struct_group_source_req
1502     struct_ip_mreq_source
1503     struct_ipv6_mreq
1504     struct_pollfd
1505     struct_rusage_ru_maxrss
1506     struct_sockaddr_in6
1507     struct_sockaddr_sa_len
1508     struct_sockaddr_storage
1509     struct_v4l2_frmivalenum_discrete
1510 "
1511
1512 HAVE_LIST="
1513     $ARCH_EXT_LIST
1514     $(add_suffix _external $ARCH_EXT_LIST)
1515     $(add_suffix _inline   $ARCH_EXT_LIST)
1516     $ARCH_FEATURES
1517     $ATOMICS_LIST
1518     $BUILTIN_LIST
1519     $HAVE_LIST_CMDLINE
1520     $HAVE_LIST_PUB
1521     $HEADERS_LIST
1522     $INTRINSICS_LIST
1523     $MATH_FUNCS
1524     $SYSTEM_FUNCS
1525     $THREADS_LIST
1526     $TOOLCHAIN_FEATURES
1527     $TYPES_LIST
1528     atomics_native
1529     dos_paths
1530     dxva2_lib
1531     libc_msvcrt
1532     libdc1394_1
1533     libdc1394_2
1534     sdl
1535     threads
1536     vdpau_x11
1537     xlib
1538 "
1539
1540 # options emitted with CONFIG_ prefix but not available on the command line
1541 CONFIG_EXTRA="
1542     aandcttables
1543     ac3dsp
1544     audio_frame_queue
1545     audiodsp
1546     blockdsp
1547     bswapdsp
1548     cabac
1549     dvprofile
1550     fdctdsp
1551     gcrypt
1552     golomb
1553     gplv3
1554     h263dsp
1555     h264chroma
1556     h264dsp
1557     h264pred
1558     h264qpel
1559     hpeldsp
1560     huffman
1561     huffyuvdsp
1562     huffyuvencdsp
1563     idctdsp
1564     iirfilter
1565     intrax8
1566     lgplv3
1567     lpc
1568     me_cmp
1569     mpeg_er
1570     mpegaudio
1571     mpegaudiodsp
1572     mpegvideo
1573     mpegvideoenc
1574     nettle
1575     pixblockdsp
1576     qpeldsp
1577     rangecoder
1578     riffdec
1579     riffenc
1580     rtpdec
1581     rtpenc_chain
1582     sinewin
1583     startcode
1584     tpeldsp
1585     videodsp
1586     vp3dsp
1587 "
1588
1589 CMDLINE_SELECT="
1590     $ARCH_EXT_LIST
1591     $CONFIG_LIST
1592     $HAVE_LIST_CMDLINE
1593     $THREADS_LIST
1594     asm
1595     cross_compile
1596     debug
1597     extra_warnings
1598     logging
1599     lto
1600     optimizations
1601     rpath
1602 "
1603
1604 PATHS_LIST="
1605     bindir
1606     datadir
1607     docdir
1608     incdir
1609     libdir
1610     mandir
1611     prefix
1612     shlibdir
1613 "
1614
1615 CMDLINE_SET="
1616     $PATHS_LIST
1617     ar
1618     arch
1619     as
1620     build_suffix
1621     cc
1622     cpu
1623     cross_prefix
1624     dep_cc
1625     extra_version
1626     host_cc
1627     host_cflags
1628     host_ld
1629     host_ldflags
1630     host_libs
1631     host_os
1632     ld
1633     logfile
1634     malloc_prefix
1635     nm
1636     optflags
1637     pkg_config
1638     pkg_config_flags
1639     random_seed
1640     samples
1641     sysinclude
1642     sysroot
1643     target_exec
1644     target_os
1645     target_path
1646     target_samples
1647     toolchain
1648 "
1649
1650 CMDLINE_APPEND="
1651     extra_cflags
1652     host_cppflags
1653 "
1654
1655 # code dependency declarations
1656
1657 # architecture extensions
1658
1659 armv5te_deps="arm"
1660 armv6_deps="arm"
1661 armv6t2_deps="arm"
1662 armv8_deps="aarch64"
1663 neon_deps_any="aarch64 arm"
1664 intrinsics_neon_deps="neon"
1665 vfp_deps_any="aarch64 arm"
1666 vfpv3_deps="vfp"
1667
1668 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1669
1670 altivec_deps="ppc"
1671 ppc4xx_deps="ppc"
1672
1673 cpunop_deps="i686"
1674 x86_64_select="i686"
1675 x86_64_suggest="fast_cmov"
1676
1677 amd3dnow_deps="mmx"
1678 amd3dnowext_deps="amd3dnow"
1679 i686_deps="x86"
1680 mmx_deps="x86"
1681 mmxext_deps="mmx"
1682 sse_deps="mmxext"
1683 sse2_deps="sse"
1684 sse3_deps="sse2"
1685 ssse3_deps="sse3"
1686 sse4_deps="ssse3"
1687 sse42_deps="sse4"
1688 avx_deps="sse42"
1689 xop_deps="avx"
1690 fma3_deps="avx"
1691 fma4_deps="avx"
1692 avx2_deps="avx"
1693
1694 mmx_external_deps="yasm"
1695 mmx_inline_deps="inline_asm"
1696 mmx_suggest="mmx_external mmx_inline"
1697
1698 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1699     eval dep=\$${ext}_deps
1700     eval ${ext}_external_deps='"${dep}_external"'
1701     eval ${ext}_inline_deps='"${dep}_inline"'
1702     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1703 done
1704
1705 aligned_stack_if_any="aarch64 ppc x86"
1706 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1707 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1708 fast_unaligned_if_any="aarch64 ppc x86"
1709 simd_align_16_if_any="altivec neon sse"
1710
1711 # system capabilities
1712 log2_deps="!libc_msvcrt"
1713
1714 symver_if_any="symver_asm_label symver_gnu_asm"
1715
1716 # threading support
1717 atomics_gcc_if="sync_val_compare_and_swap"
1718 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1719 atomics_win32_if="MemoryBarrier"
1720 atomics_native_if_any="$ATOMICS_LIST"
1721 w32threads_deps="atomics_native"
1722 threads_if_any="$THREADS_LIST"
1723
1724 # subsystems
1725 dct_select="rdft"
1726 error_resilience_select="me_cmp"
1727 intrax8_select="error_resilience"
1728 mdct_select="fft"
1729 rdft_select="fft"
1730 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1731 mpeg_er_select="error_resilience"
1732 mpegaudio_select="mpegaudiodsp"
1733 mpegaudiodsp_select="dct"
1734 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1735 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1736
1737 # decoders / encoders
1738 aac_decoder_select="mdct sinewin"
1739 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1740 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1741 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1742 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1743 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1744 aic_decoder_select="golomb idctdsp"
1745 alac_encoder_select="lpc"
1746 als_decoder_select="bswapdsp"
1747 amrnb_decoder_select="lsp"
1748 amrwb_decoder_select="lsp"
1749 amv_decoder_select="sp5x_decoder"
1750 ape_decoder_select="bswapdsp"
1751 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1752 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1753 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1754 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1755 atrac1_decoder_select="mdct sinewin"
1756 atrac3_decoder_select="mdct"
1757 atrac3p_decoder_select="mdct sinewin"
1758 bink_decoder_select="blockdsp hpeldsp"
1759 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1760 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1761 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1762 cllc_decoder_select="bswapdsp"
1763 comfortnoise_encoder_select="lpc"
1764 cook_decoder_select="audiodsp mdct sinewin"
1765 cscd_decoder_select="lzo"
1766 cscd_decoder_suggest="zlib"
1767 dca_decoder_select="mdct"
1768 dnxhd_decoder_select="blockdsp idctdsp"
1769 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1770 dvvideo_decoder_select="dvprofile idctdsp"
1771 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1772 dxa_decoder_deps="zlib"
1773 eac3_decoder_select="ac3_decoder"
1774 eac3_encoder_select="ac3_encoder"
1775 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1776 eatgq_decoder_select="aandcttables idctdsp"
1777 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1778 exr_decoder_deps="zlib"
1779 ffv1_decoder_select="golomb rangecoder"
1780 ffv1_encoder_select="rangecoder"
1781 ffvhuff_decoder_select="huffyuv_decoder"
1782 ffvhuff_encoder_select="huffyuv_encoder"
1783 fic_decoder_select="golomb"
1784 flac_decoder_select="golomb"
1785 flac_encoder_select="bswapdsp golomb lpc"
1786 flashsv_decoder_deps="zlib"
1787 flashsv_encoder_deps="zlib"
1788 flashsv2_decoder_deps="zlib"
1789 flv_decoder_select="h263_decoder"
1790 flv_encoder_select="h263_encoder"
1791 fourxm_decoder_select="blockdsp bswapdsp"
1792 fraps_decoder_select="bswapdsp huffman"
1793 g2m_decoder_deps="zlib"
1794 g2m_decoder_select="blockdsp idctdsp"
1795 h261_decoder_select="mpeg_er mpegvideo"
1796 h261_encoder_select="aandcttables mpegvideoenc"
1797 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1798 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1799 h263i_decoder_select="h263_decoder"
1800 h263p_encoder_select="h263_encoder"
1801 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1802 h264_decoder_suggest="error_resilience"
1803 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1804 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1805 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1806 iac_decoder_select="imc_decoder"
1807 imc_decoder_select="bswapdsp fft mdct sinewin"
1808 indeo3_decoder_select="hpeldsp"
1809 interplay_video_decoder_select="hpeldsp"
1810 jpegls_decoder_select="golomb mjpeg_decoder"
1811 jpegls_encoder_select="golomb"
1812 jv_decoder_select="blockdsp"
1813 lagarith_decoder_select="huffyuvdsp"
1814 ljpeg_encoder_select="aandcttables idctdsp"
1815 loco_decoder_select="golomb"
1816 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1817 metasound_decoder_select="lsp mdct sinewin"
1818 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1819 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1820 mjpeg_encoder_select="aandcttables mpegvideoenc"
1821 mjpegb_decoder_select="mjpeg_decoder"
1822 mlp_decoder_select="mlp_parser"
1823 motionpixels_decoder_select="bswapdsp"
1824 mp1_decoder_select="mpegaudio"
1825 mp1float_decoder_select="mpegaudio"
1826 mp2_decoder_select="mpegaudio"
1827 mp2float_decoder_select="mpegaudio"
1828 mp3_decoder_select="mpegaudio"
1829 mp3adu_decoder_select="mpegaudio"
1830 mp3adufloat_decoder_select="mpegaudio"
1831 mp3float_decoder_select="mpegaudio"
1832 mp3on4_decoder_select="mpegaudio"
1833 mp3on4float_decoder_select="mpegaudio"
1834 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1835 mpc8_decoder_select="mpegaudiodsp"
1836 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1837 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1838 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1839 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1840 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1841 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1842 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1843 mpeg4_encoder_select="h263_encoder"
1844 msmpeg4v1_decoder_select="h263_decoder"
1845 msmpeg4v2_decoder_select="h263_decoder"
1846 msmpeg4v2_encoder_select="h263_encoder"
1847 msmpeg4v3_decoder_select="h263_decoder"
1848 msmpeg4v3_encoder_select="h263_encoder"
1849 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1850 mxpeg_decoder_select="mjpeg_decoder"
1851 nellymoser_decoder_select="mdct sinewin"
1852 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1853 nuv_decoder_select="idctdsp lzo"
1854 on2avc_decoder_select="mdct"
1855 opus_decoder_deps="avresample"
1856 png_decoder_deps="zlib"
1857 png_encoder_deps="zlib"
1858 png_encoder_select="huffyuvencdsp"
1859 prores_decoder_select="idctdsp"
1860 prores_encoder_select="fdctdsp"
1861 qcelp_decoder_select="lsp"
1862 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1863 ra_144_encoder_select="audio_frame_queue lpc"
1864 ralf_decoder_select="golomb"
1865 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1866 rv10_encoder_select="h263_encoder"
1867 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1868 rv20_encoder_select="h263_encoder"
1869 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1870 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1871 shorten_decoder_select="golomb"
1872 sipr_decoder_select="lsp"
1873 sp5x_decoder_select="mjpeg_decoder"
1874 svq1_decoder_select="hpeldsp"
1875 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1876 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1877 svq3_decoder_suggest="zlib"
1878 tak_decoder_select="audiodsp"
1879 theora_decoder_select="vp3_decoder"
1880 thp_decoder_select="mjpeg_decoder"
1881 tiff_decoder_suggest="zlib"
1882 tiff_encoder_suggest="zlib"
1883 truehd_decoder_select="mlp_decoder"
1884 truemotion2_decoder_select="bswapdsp"
1885 truespeech_decoder_select="bswapdsp"
1886 tscc_decoder_deps="zlib"
1887 twinvq_decoder_select="mdct lsp sinewin"
1888 utvideo_decoder_select="bswapdsp"
1889 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1890 vble_decoder_select="huffyuvdsp"
1891 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1892 vc1image_decoder_select="vc1_decoder"
1893 vorbis_decoder_select="mdct"
1894 vorbis_encoder_select="mdct"
1895 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1896 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1897 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1898 vp6a_decoder_select="vp6_decoder"
1899 vp6f_decoder_select="vp6_decoder"
1900 vp7_decoder_select="h264pred videodsp"
1901 vp8_decoder_select="h264pred videodsp"
1902 vp9_decoder_select="videodsp"
1903 webp_decoder_select="vp8_decoder"
1904 wmapro_decoder_select="mdct sinewin"
1905 wmav1_decoder_select="mdct sinewin"
1906 wmav1_encoder_select="mdct sinewin"
1907 wmav2_decoder_select="mdct sinewin"
1908 wmav2_encoder_select="mdct sinewin"
1909 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1910 wmv1_decoder_select="h263_decoder"
1911 wmv1_encoder_select="h263_encoder"
1912 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1913 wmv2_encoder_select="h263_encoder"
1914 wmv3_decoder_select="vc1_decoder"
1915 wmv3image_decoder_select="wmv3_decoder"
1916 zerocodec_decoder_deps="zlib"
1917 zlib_decoder_deps="zlib"
1918 zlib_encoder_deps="zlib"
1919 zmbv_decoder_deps="zlib"
1920 zmbv_encoder_deps="zlib"
1921
1922 # hardware accelerators
1923 dxva2_deps="dxva2api_h"
1924 vaapi_deps="va_va_h"
1925 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1926 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1927 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1928
1929 h263_vaapi_hwaccel_deps="vaapi"
1930 h263_vaapi_hwaccel_select="h263_decoder"
1931 h263_vdpau_hwaccel_deps="vdpau"
1932 h263_vdpau_hwaccel_select="h263_decoder"
1933 h264_dxva2_hwaccel_deps="dxva2"
1934 h264_dxva2_hwaccel_select="h264_decoder"
1935 h264_vaapi_hwaccel_deps="vaapi"
1936 h264_vaapi_hwaccel_select="h264_decoder"
1937 h264_vda_hwaccel_deps="vda"
1938 h264_vda_hwaccel_select="h264_decoder"
1939 h264_vda_old_hwaccel_deps="vda"
1940 h264_vda_old_hwaccel_select="h264_decoder"
1941 h264_vdpau_hwaccel_deps="vdpau"
1942 h264_vdpau_hwaccel_select="h264_decoder"
1943 mpeg1_vdpau_hwaccel_deps="vdpau"
1944 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1945 mpeg2_dxva2_hwaccel_deps="dxva2"
1946 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1947 mpeg2_vaapi_hwaccel_deps="vaapi"
1948 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1949 mpeg2_vdpau_hwaccel_deps="vdpau"
1950 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1951 mpeg4_vaapi_hwaccel_deps="vaapi"
1952 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1953 mpeg4_vdpau_hwaccel_deps="vdpau"
1954 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1955 vc1_dxva2_hwaccel_deps="dxva2"
1956 vc1_dxva2_hwaccel_select="vc1_decoder"
1957 vc1_vaapi_hwaccel_deps="vaapi"
1958 vc1_vaapi_hwaccel_select="vc1_decoder"
1959 vc1_vdpau_hwaccel_deps="vdpau"
1960 vc1_vdpau_hwaccel_select="vc1_decoder"
1961 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1962 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1963 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1964
1965 # parsers
1966 h264_parser_select="h264_decoder"
1967 mpegvideo_parser_select="mpegvideo"
1968 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1969 vc1_parser_select="mpegvideo startcode"
1970
1971 # external libraries
1972 libfaac_encoder_deps="libfaac"
1973 libfaac_encoder_select="audio_frame_queue"
1974 libfdk_aac_decoder_deps="libfdk_aac"
1975 libfdk_aac_encoder_deps="libfdk_aac"
1976 libfdk_aac_encoder_select="audio_frame_queue"
1977 libgsm_decoder_deps="libgsm"
1978 libgsm_encoder_deps="libgsm"
1979 libgsm_ms_decoder_deps="libgsm"
1980 libgsm_ms_encoder_deps="libgsm"
1981 libilbc_decoder_deps="libilbc"
1982 libilbc_encoder_deps="libilbc"
1983 libmp3lame_encoder_deps="libmp3lame"
1984 libmp3lame_encoder_select="audio_frame_queue"
1985 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1986 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1987 libopencore_amrnb_encoder_select="audio_frame_queue"
1988 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1989 libopenjpeg_decoder_deps="libopenjpeg"
1990 libopenjpeg_encoder_deps="libopenjpeg"
1991 libopus_decoder_deps="libopus"
1992 libopus_encoder_deps="libopus"
1993 libopus_encoder_select="audio_frame_queue"
1994 libschroedinger_decoder_deps="libschroedinger"
1995 libschroedinger_encoder_deps="libschroedinger"
1996 libspeex_decoder_deps="libspeex"
1997 libspeex_encoder_deps="libspeex"
1998 libspeex_encoder_select="audio_frame_queue"
1999 libtheora_encoder_deps="libtheora"
2000 libtwolame_encoder_deps="libtwolame"
2001 libvo_aacenc_encoder_deps="libvo_aacenc"
2002 libvo_aacenc_encoder_select="audio_frame_queue"
2003 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2004 libvorbis_encoder_deps="libvorbis"
2005 libvorbis_encoder_select="audio_frame_queue"
2006 libvpx_vp8_decoder_deps="libvpx"
2007 libvpx_vp8_encoder_deps="libvpx"
2008 libvpx_vp9_decoder_deps="libvpx"
2009 libvpx_vp9_encoder_deps="libvpx"
2010 libwavpack_encoder_deps="libwavpack"
2011 libwebp_encoder_deps="libwebp"
2012 libx264_encoder_deps="libx264"
2013 libx265_encoder_deps="libx265"
2014 libxavs_encoder_deps="libxavs"
2015 libxvid_encoder_deps="libxvid"
2016
2017 # demuxers / muxers
2018 ac3_demuxer_select="ac3_parser"
2019 asf_demuxer_select="riffdec"
2020 asf_muxer_select="riffenc"
2021 asf_stream_muxer_select="asf_muxer"
2022 avi_demuxer_select="riffdec"
2023 avi_muxer_select="riffenc"
2024 avisynth_demuxer_deps="avisynth"
2025 avisynth_demuxer_select="riffdec"
2026 caf_demuxer_select="riffdec"
2027 dirac_demuxer_select="dirac_parser"
2028 dv_demuxer_select="dvprofile"
2029 dv_muxer_select="dvprofile"
2030 dxa_demuxer_select="riffdec"
2031 eac3_demuxer_select="ac3_parser"
2032 f4v_muxer_select="mov_muxer"
2033 flac_demuxer_select="flac_parser"
2034 hds_muxer_select="flv_muxer"
2035 hls_muxer_select="mpegts_muxer"
2036 ipod_muxer_select="mov_muxer"
2037 ismv_muxer_select="mov_muxer"
2038 matroska_audio_muxer_select="matroska_muxer"
2039 matroska_demuxer_select="riffdec"
2040 matroska_demuxer_suggest="bzlib lzo zlib"
2041 matroska_muxer_select="riffenc"
2042 mmf_muxer_select="riffenc"
2043 mov_demuxer_select="riffdec"
2044 mov_demuxer_suggest="zlib"
2045 mov_muxer_select="riffenc rtpenc_chain"
2046 mp3_demuxer_select="mpegaudio_parser"
2047 mp4_muxer_select="mov_muxer"
2048 mpegts_muxer_select="adts_muxer latm_muxer"
2049 mpegtsraw_demuxer_select="mpegts_demuxer"
2050 mxf_d10_muxer_select="mxf_muxer"
2051 nut_muxer_select="riffenc"
2052 nuv_demuxer_select="riffdec"
2053 oga_muxer_select="ogg_muxer"
2054 ogg_demuxer_select="golomb"
2055 opus_muxer_select="ogg_muxer"
2056 psp_muxer_select="mov_muxer"
2057 rtp_demuxer_select="sdp_demuxer"
2058 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2059 rtsp_demuxer_select="http_protocol rtpdec"
2060 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2061 sap_demuxer_select="sdp_demuxer"
2062 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2063 sdp_demuxer_select="rtpdec"
2064 smoothstreaming_muxer_select="ismv_muxer"
2065 spdif_muxer_select="aac_parser"
2066 spx_muxer_select="ogg_muxer"
2067 tak_demuxer_select="tak_parser"
2068 tg2_muxer_select="mov_muxer"
2069 tgp_muxer_select="mov_muxer"
2070 w64_demuxer_select="wav_demuxer"
2071 wav_demuxer_select="riffdec"
2072 wav_muxer_select="riffenc"
2073 webm_muxer_select="riffenc"
2074 wtv_demuxer_select="riffdec"
2075 xmv_demuxer_select="riffdec"
2076 xwma_demuxer_select="riffdec"
2077
2078 # indevs / outdevs
2079 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2080 alsa_outdev_deps="alsa_asoundlib_h"
2081 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2082 dv1394_indev_deps="dv1394"
2083 dv1394_indev_select="dv_demuxer"
2084 fbdev_indev_deps="linux_fb_h"
2085 jack_indev_deps="jack_jack_h pthreads"
2086 libcdio_indev_deps="libcdio"
2087 libdc1394_indev_deps="libdc1394"
2088 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2089 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2090 pulse_indev_deps="libpulse"
2091 sndio_indev_deps="sndio_h"
2092 sndio_outdev_deps="sndio_h"
2093 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2094 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2095 vfwcap_indev_extralibs="-lavicap32"
2096 x11grab_indev_deps="x11grab XShmCreateImage"
2097
2098 # protocols
2099 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2100 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2101 ffrtmpcrypt_protocol_select="tcp_protocol"
2102 ffrtmphttp_protocol_deps="!librtmp_protocol"
2103 ffrtmphttp_protocol_select="http_protocol"
2104 gopher_protocol_select="network"
2105 http_protocol_select="tcp_protocol"
2106 httpproxy_protocol_select="tcp_protocol"
2107 https_protocol_select="tls_protocol"
2108 icecast_protocol_select="http_protocol"
2109 librtmp_protocol_deps="librtmp"
2110 librtmpe_protocol_deps="librtmp"
2111 librtmps_protocol_deps="librtmp"
2112 librtmpt_protocol_deps="librtmp"
2113 librtmpte_protocol_deps="librtmp"
2114 mmsh_protocol_select="http_protocol"
2115 mmst_protocol_select="network"
2116 rtmp_protocol_deps="!librtmp_protocol"
2117 rtmp_protocol_select="tcp_protocol"
2118 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2119 rtmps_protocol_deps="!librtmp_protocol"
2120 rtmps_protocol_select="tls_protocol"
2121 rtmpt_protocol_select="ffrtmphttp_protocol"
2122 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2123 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2124 rtp_protocol_select="udp_protocol"
2125 sctp_protocol_deps="struct_sctp_event_subscribe"
2126 sctp_protocol_select="network"
2127 srtp_protocol_select="rtp_protocol"
2128 tcp_protocol_select="network"
2129 tls_protocol_deps_any="openssl gnutls"
2130 tls_protocol_select="tcp_protocol"
2131 udp_protocol_select="network"
2132 unix_protocol_deps="sys_un_h"
2133 unix_protocol_select="network"
2134
2135 # filters
2136 blackframe_filter_deps="gpl"
2137 boxblur_filter_deps="gpl"
2138 bs2b_filter_deps="libbs2b"
2139 cropdetect_filter_deps="gpl"
2140 delogo_filter_deps="gpl"
2141 drawtext_filter_deps="libfreetype"
2142 frei0r_filter_deps="frei0r dlopen"
2143 frei0r_filter_extralibs='$ldl'
2144 frei0r_src_filter_deps="frei0r dlopen"
2145 frei0r_src_filter_extralibs='$ldl'
2146 hqdn3d_filter_deps="gpl"
2147 interlace_filter_deps="gpl"
2148 ocv_filter_deps="libopencv"
2149 resample_filter_deps="avresample"
2150 scale_filter_deps="swscale"
2151
2152 # examples
2153 avcodec_example_deps="avcodec avutil"
2154 filter_audio_example_deps="avfilter avutil"
2155 metadata_example_deps="avformat avutil"
2156 output_example_deps="avcodec avformat avutil swscale"
2157 transcode_aac_example_deps="avcodec avformat avresample"
2158
2159 # libraries, in linking order
2160 avcodec_deps="avutil"
2161 avdevice_deps="avformat avcodec avutil"
2162 avfilter_deps="avutil"
2163 avformat_deps="avcodec avutil"
2164 avresample_deps="avutil"
2165 swscale_deps="avutil"
2166
2167 # programs
2168 avconv_deps="avcodec avfilter avformat avresample swscale"
2169 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2170                fps_filter null_filter resample_filter scale_filter
2171                setpts_filter trim_filter"
2172 avplay_deps="avcodec avformat avresample swscale sdl"
2173 avplay_libs='$sdl_libs'
2174 avplay_select="rdft"
2175 avprobe_deps="avcodec avformat"
2176
2177 # documentation
2178 pod2man_deps="doc"
2179 texi2html_deps="doc"
2180
2181 # default parameters
2182
2183 logfile="config.log"
2184
2185 # installation paths
2186 prefix_default="/usr/local"
2187 bindir_default='${prefix}/bin'
2188 datadir_default='${prefix}/share/avconv'
2189 docdir_default='${prefix}/share/doc/libav'
2190 incdir_default='${prefix}/include'
2191 libdir_default='${prefix}/lib'
2192 mandir_default='${prefix}/share/man'
2193 shlibdir_default="$libdir_default"
2194
2195 # toolchain
2196 ar_default="ar"
2197 cc_default="gcc"
2198 host_cc_default="gcc"
2199 cp_f="cp -f"
2200 ln_s="ln -s -f"
2201 nm_default="nm -g"
2202 objformat="elf"
2203 pkg_config_default=pkg-config
2204 ranlib="ranlib"
2205 strip="strip"
2206 yasmexe="yasm"
2207
2208 # machine
2209 arch_default=$(uname -m)
2210 cpu="generic"
2211 intrinsics="none"
2212
2213 # OS
2214 target_os_default=$(tolower $(uname -s))
2215 host_os=$target_os_default
2216
2217 # configurable options
2218 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2219
2220 enable asm
2221 enable debug
2222 enable doc
2223 enable optimizations
2224 enable safe_bitstream_reader
2225 enable static
2226 enable swscale_alpha
2227
2228 # By default, enable only those hwaccels that have no external dependencies.
2229 enable dxva2 vdpau
2230
2231 # build settings
2232 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2233 LIBPREF="lib"
2234 LIBSUF=".a"
2235 FULLNAME='$(NAME)$(BUILDSUF)'
2236 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2237 SLIBPREF="lib"
2238 SLIBSUF=".so"
2239 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2240 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2241 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2242 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2243 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2244 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2245
2246 asflags_filter=echo
2247 cflags_filter=echo
2248 ldflags_filter=echo
2249
2250 AS_C='-c'
2251 AS_O='-o $@'
2252 CC_C='-c'
2253 CC_E='-E -o $@'
2254 CC_O='-o $@'
2255 LD_O='-o $@'
2256 LD_LIB='-l%'
2257 LD_PATH='-L'
2258 HOSTCC_C='-c'
2259 HOSTCC_E='-E -o $@'
2260 HOSTCC_O='-o $@'
2261 HOSTLD_O='-o $@'
2262
2263 host_libs='-lm'
2264 host_cflags_filter=echo
2265 host_ldflags_filter=echo
2266
2267 target_path='$(CURDIR)'
2268
2269 # since the object filename is not given with the -MM flag, the compiler
2270 # is only able to print the basename, and we must add the path ourselves
2271 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2272 DEPFLAGS='-MM'
2273
2274 # find source path
2275 if test -f configure; then
2276     source_path=.
2277 else
2278     source_path=$(cd $(dirname "$0"); pwd)
2279     echo "$source_path" | grep -q '[[:blank:]]' &&
2280         die "Out of tree builds are impossible with whitespace in source path."
2281     test -e "$source_path/config.h" &&
2282         die "Out of tree builds are impossible with config.h in source dir."
2283 fi
2284
2285 for v in "$@"; do
2286     r=${v#*=}
2287     l=${v%"$r"}
2288     r=$(sh_quote "$r")
2289     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2290 done
2291
2292 find_things(){
2293     thing=$1
2294     pattern=$2
2295     file=$source_path/$3
2296     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2297 }
2298
2299 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2300 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2301 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2302 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2303 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2304 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2305 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2306 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2307 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2308 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2309 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2310
2311 ALL_COMPONENTS="
2312     $BSF_LIST
2313     $DECODER_LIST
2314     $DEMUXER_LIST
2315     $ENCODER_LIST
2316     $FILTER_LIST
2317     $HWACCEL_LIST
2318     $INDEV_LIST
2319     $MUXER_LIST
2320     $OUTDEV_LIST
2321     $PARSER_LIST
2322     $PROTOCOL_LIST
2323 "
2324
2325 for n in $COMPONENT_LIST; do
2326     v=$(toupper ${n%s})_LIST
2327     eval enable \$$v
2328     eval ${n}_if_any="\$$v"
2329 done
2330
2331 enable $ARCH_EXT_LIST
2332
2333 die_unknown(){
2334     echo "Unknown option \"$1\"."
2335     echo "See $0 --help for available options."
2336     exit 1
2337 }
2338
2339 print_3_columns() {
2340     cat | tr ' ' '\n' | sort | pr -r -3 -t
2341 }
2342
2343 show_list() {
2344     suffix=_$1
2345     shift
2346     echo $* | sed s/$suffix//g | print_3_columns
2347     exit 0
2348 }
2349
2350 rand_list(){
2351     IFS=', '
2352     set -- $*
2353     unset IFS
2354     for thing; do
2355         comp=${thing%:*}
2356         prob=${thing#$comp}
2357         prob=${prob#:}
2358         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2359         echo "prob ${prob:-0.5}"
2360         printf '%s\n' $comp
2361     done
2362 }
2363
2364 do_random(){
2365     action=$1
2366     shift
2367     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2368     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2369 }
2370
2371 for opt do
2372     optval="${opt#*=}"
2373     case "$opt" in
2374         --extra-ldflags=*)
2375             add_ldflags $optval
2376         ;;
2377         --extra-ldexeflags=*)
2378             add_ldexeflags $optval
2379         ;;
2380         --extra-libs=*)
2381             add_extralibs $optval
2382         ;;
2383         --disable-devices)
2384             disable $INDEV_LIST $OUTDEV_LIST
2385         ;;
2386         --enable-debug=*)
2387             debuglevel="$optval"
2388         ;;
2389         --disable-programs)
2390             disable $PROGRAM_LIST
2391         ;;
2392         --disable-everything)
2393             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2394         ;;
2395         --disable-all)
2396             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2397             disable $LIBRARY_LIST $PROGRAM_LIST doc
2398         ;;
2399         --enable-random|--disable-random)
2400             action=${opt%%-random}
2401             do_random ${action#--} $COMPONENT_LIST
2402         ;;
2403         --enable-random=*|--disable-random=*)
2404             action=${opt%%-random=*}
2405             do_random ${action#--} $optval
2406         ;;
2407         --enable-*=*|--disable-*=*)
2408             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2409             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2410             eval list=\$$(toupper $thing)_LIST
2411             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2412             $action $(filter "$name" $list)
2413         ;;
2414         --enable-avserver|--disable-avserver*)
2415             warn "avserver has been removed, the ${opt} option is only"\
2416                  "provided for compatibility and will be removed in the future"
2417         ;;
2418         --enable-?*|--disable-?*)
2419             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2420             if is_in $option $COMPONENT_LIST; then
2421                 test $action = disable && action=unset
2422                 eval $action \$$(toupper ${option%s})_LIST
2423             elif is_in $option $CMDLINE_SELECT; then
2424                 $action $option
2425             else
2426                 die_unknown $opt
2427             fi
2428         ;;
2429         --list-*)
2430             NAME="${opt#--list-}"
2431             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2432             NAME=${NAME%s}
2433             eval show_list $NAME \$$(toupper $NAME)_LIST
2434         ;;
2435         --help|-h) show_help
2436         ;;
2437         *)
2438             optname="${opt%%=*}"
2439             optname="${optname#--}"
2440             optname=$(echo "$optname" | sed 's/-/_/g')
2441             if is_in $optname $CMDLINE_SET; then
2442                 eval $optname='$optval'
2443             elif is_in $optname $CMDLINE_APPEND; then
2444                 append $optname "$optval"
2445             else
2446                 die_unknown $opt
2447             fi
2448         ;;
2449     esac
2450 done
2451
2452 disabled logging && logfile=/dev/null
2453
2454 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2455 set >> $logfile
2456
2457 test -n "$cross_prefix" && enable cross_compile
2458
2459 if enabled cross_compile; then
2460     test -n "$arch" && test -n "$target_os" ||
2461         die "Must specify target arch and OS when cross-compiling"
2462 fi
2463
2464 ar_default="${cross_prefix}${ar_default}"
2465 cc_default="${cross_prefix}${cc_default}"
2466 nm_default="${cross_prefix}${nm_default}"
2467 pkg_config_default="${cross_prefix}${pkg_config_default}"
2468 ranlib="${cross_prefix}${ranlib}"
2469 strip="${cross_prefix}${strip}"
2470
2471 sysinclude_default="${sysroot}/usr/include"
2472
2473 case "$toolchain" in
2474     clang-asan)
2475         cc_default="clang"
2476         add_cflags  -fsanitize=address
2477         add_ldflags -fsanitize=address
2478     ;;
2479     clang-tsan)
2480         cc_default="clang"
2481         add_cflags  -fsanitize=thread -pie
2482         add_ldflags -fsanitize=thread -pie
2483     ;;
2484     clang-usan)
2485         cc_default="clang"
2486         add_cflags  -fsanitize=undefined -O1
2487         add_ldflags -fsanitize=undefined
2488     ;;
2489     gcc-asan)
2490         cc_default="gcc"
2491         add_cflags  -fsanitize=address
2492         add_ldflags -fsanitize=address
2493     ;;
2494     gcc-tsan)
2495         cc_default="gcc"
2496         add_cflags  -fsanitize=thread -pie -fPIC
2497         add_ldflags -fsanitize=thread -pie -fPIC
2498     ;;
2499     gcc-usan)
2500         cc_default="gcc"
2501         add_cflags  -fsanitize=undefined
2502         add_ldflags -fsanitize=undefined
2503     ;;
2504     valgrind-massif)
2505         target_exec_default="valgrind"
2506         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2507     ;;
2508     valgrind-memcheck)
2509         target_exec_default="valgrind"
2510         target_exec_args="--track-origins=yes --leak-check=full"
2511     ;;
2512     msvc)
2513         # Check whether the current MSVC version needs the C99 converter.
2514         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2515         # support enough of C99 to build libav. Default to the new
2516         # behaviour if the regexp was unable to match anything, since this
2517         # successfully parses the version number of existing supported
2518         # versions that require the converter (MSVC 2010 and 2012).
2519         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2520         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2521             cc_default="cl"
2522         else
2523             cc_default="c99wrap cl"
2524         fi
2525         ld_default="link"
2526         nm_default="dumpbin -symbols"
2527         ar_default="lib"
2528         target_os_default="win32"
2529         # Use a relative path for TMPDIR. This makes sure all the
2530         # ffconf temp files are written with a relative path, avoiding
2531         # issues with msys/win32 path conversion for MSVC parameters
2532         # such as -Fo<file> or -out:<file>.
2533         TMPDIR=.
2534     ;;
2535     icl)
2536         cc_default="icl"
2537         ld_default="xilink"
2538         nm_default="dumpbin -symbols"
2539         ar_default="xilib"
2540         target_os_default="win32"
2541         TMPDIR=.
2542     ;;
2543     gcov)
2544         add_cflags  -fprofile-arcs -ftest-coverage
2545         add_ldflags -fprofile-arcs -ftest-coverage
2546     ;;
2547     hardened)
2548         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2549         add_ldflags -Wl,-z,relro -Wl,-z,now
2550     ;;
2551     ?*)
2552         die "Unknown toolchain $toolchain"
2553     ;;
2554 esac
2555
2556 set_default arch cc pkg_config sysinclude target_exec target_os
2557 enabled cross_compile || host_cc_default=$cc
2558 set_default host_cc
2559
2560 if ! $pkg_config --version >/dev/null 2>&1; then
2561     warn "$pkg_config not found, library detection may fail."
2562     pkg_config=false
2563 fi
2564
2565 exesuf() {
2566     case $1 in
2567         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2568     esac
2569 }
2570
2571 EXESUF=$(exesuf $target_os)
2572 HOSTEXESUF=$(exesuf $host_os)
2573
2574 # set temporary file name
2575 : ${TMPDIR:=$TEMPDIR}
2576 : ${TMPDIR:=$TMP}
2577 : ${TMPDIR:=/tmp}
2578
2579 if ! check_cmd mktemp -u XXXXXX; then
2580     # simple replacement for missing mktemp
2581     # NOT SAFE FOR GENERAL USE
2582     mktemp(){
2583         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2584     }
2585 fi
2586
2587 tmpfile(){
2588     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2589         (set -C; exec > $tmp) 2>/dev/null ||
2590         die "Unable to create temporary file in $TMPDIR."
2591     append TMPFILES $tmp
2592     eval $1=$tmp
2593 }
2594
2595 trap 'rm -f -- $TMPFILES' EXIT
2596
2597 tmpfile TMPASM .asm
2598 tmpfile TMPC   .c
2599 tmpfile TMPE   $EXESUF
2600 tmpfile TMPH   .h
2601 tmpfile TMPO   .o
2602 tmpfile TMPS   .S
2603 tmpfile TMPSH  .sh
2604 tmpfile TMPV   .ver
2605
2606 unset -f mktemp
2607
2608 chmod +x $TMPE
2609
2610 # make sure we can execute files in $TMPDIR
2611 cat > $TMPSH 2>> $logfile <<EOF
2612 #! /bin/sh
2613 EOF
2614 chmod +x $TMPSH >> $logfile 2>&1
2615 if ! $TMPSH >> $logfile 2>&1; then
2616     cat <<EOF
2617 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2618 variable to another directory and make sure that it is not mounted noexec.
2619 EOF
2620     die "Sanity test failed."
2621 fi
2622
2623 armasm_flags(){
2624     for flag; do
2625         case $flag in
2626             # Filter out MSVC cl.exe options from cflags that shouldn't
2627             # be passed to gas-preprocessor
2628             -M[TD]*)                                            ;;
2629             *)                  echo $flag                      ;;
2630         esac
2631    done
2632 }
2633
2634 ccc_flags(){
2635     for flag; do
2636         case $flag in
2637             -std=c99)           echo -c99                       ;;
2638             -mcpu=*)            echo -arch ${flag#*=}           ;;
2639             -mieee)             echo -ieee                      ;;
2640             -O*|-fast)          echo $flag                      ;;
2641             -fno-math-errno)    echo -assume nomath_errno       ;;
2642             -g)                 echo -g3                        ;;
2643             -Wall)              echo -msg_enable level2         ;;
2644             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2645             -Wl,*)              echo $flag                      ;;
2646             -f*|-W*)                                            ;;
2647             *)                  echo $flag                      ;;
2648         esac
2649    done
2650 }
2651
2652 cparser_flags(){
2653     for flag; do
2654         case $flag in
2655             -Wno-switch)             echo -Wno-switch-enum ;;
2656             -Wno-format-zero-length) ;;
2657             -Wdisabled-optimization) ;;
2658             -Wno-pointer-sign)       echo -Wno-other ;;
2659             *)                       echo $flag ;;
2660         esac
2661     done
2662 }
2663
2664 msvc_common_flags(){
2665     for flag; do
2666         case $flag in
2667             # In addition to specifying certain flags under the compiler
2668             # specific filters, they must be specified here as well or else the
2669             # generic catch all at the bottom will print the original flag.
2670             -Wall)                ;;
2671             -std=c99)             ;;
2672             # Common flags
2673             -fomit-frame-pointer) ;;
2674             -g)                   echo -Z7 ;;
2675             -fno-math-errno)      ;;
2676             -fno-common)          ;;
2677             -fno-signed-zeros)    ;;
2678             -fPIC)                ;;
2679             -mthumb)              ;;
2680             -march=*)             ;;
2681             -lz)                  echo zlib.lib ;;
2682             -lavifil32)           echo vfw32.lib ;;
2683             -lavicap32)           echo vfw32.lib user32.lib ;;
2684             -l*)                  echo ${flag#-l}.lib ;;
2685             *)                    echo $flag ;;
2686         esac
2687     done
2688 }
2689
2690 msvc_flags(){
2691     msvc_common_flags "$@"
2692     for flag; do
2693         case $flag in
2694             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2695                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2696                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2697                                        -wd4273 -wd4701 ;;
2698         esac
2699     done
2700 }
2701
2702 icl_flags(){
2703     msvc_common_flags "$@"
2704     for flag; do
2705         case $flag in
2706             # Despite what Intel's documentation says -Wall, which is supported
2707             # on Windows, does enable remarks so disable them here.
2708             -Wall)                echo $flag -Qdiag-disable:remark ;;
2709             -std=c99)             echo -Qstd=c99 ;;
2710         esac
2711     done
2712 }
2713
2714 pgi_flags(){
2715     for flag; do
2716         case $flag in
2717             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2718             -fomit-frame-pointer) echo -Mnoframe ;;
2719             -g)                   echo -gopt ;;
2720             *)                    echo $flag ;;
2721         esac
2722     done
2723 }
2724
2725 suncc_flags(){
2726     for flag; do
2727         case $flag in
2728             -march=*|-mcpu=*)
2729                 case "${flag#*=}" in
2730                     native)                   echo -xtarget=native       ;;
2731                     v9|niagara)               echo -xarch=sparc          ;;
2732                     ultrasparc)               echo -xarch=sparcvis       ;;
2733                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2734                     i586|pentium)             echo -xchip=pentium        ;;
2735                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2736                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2737                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2738                     pentium4*)          echo -xtarget=pentium4           ;;
2739                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2740                     *-sse3)             echo -xarch=sse3                 ;;
2741                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2742                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2743                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2744                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2745                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2746                     k8|opteron|athlon64|athlon-fx)
2747                                                echo -xarch=sse2a         ;;
2748                     athlon*)                   echo -xarch=pentium_proa  ;;
2749                 esac
2750                 ;;
2751             -std=c99)             echo -xc99              ;;
2752             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2753             -fPIC)                echo -KPIC -xcode=pic32 ;;
2754             -W*,*)                echo $flag              ;;
2755             -f*-*|-W*|-mimpure-text)                      ;;
2756             -shared)              echo -G                 ;;
2757             *)                    echo $flag              ;;
2758         esac
2759     done
2760 }
2761
2762 tms470_flags(){
2763     for flag; do
2764         case $flag in
2765             -march=*|-mcpu=*)
2766                 case "${flag#*=}" in
2767                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2768                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2769                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2770                     armv6*|arm11*)          echo -mv=6   ;;
2771                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2772                                             echo -mv=5e  ;;
2773                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2774                 esac
2775                 ;;
2776             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2777             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2778             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2779             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2780             -msoft-float)   echo --float_support=vfplib       ;;
2781             -O[0-3]|-mf=*)  echo $flag                        ;;
2782             -g)             echo -g -mn                       ;;
2783             -pds=*)         echo $flag                        ;;
2784             -D*|-I*)        echo $flag                        ;;
2785             --gcc|--abi=*)  echo $flag                        ;;
2786             -me)            echo $flag                        ;;
2787         esac
2788     done
2789 }
2790
2791 probe_cc(){
2792     pfx=$1
2793     _cc=$2
2794
2795     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2796     unset _ld_o _ldflags _ld_lib _ld_path
2797     unset _depflags _DEPCMD _DEPFLAGS
2798     _flags_filter=echo
2799
2800     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2801         _type=llvm_gcc
2802         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2803         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2804         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2805         _cflags_speed='-O3'
2806         _cflags_size='-Os'
2807     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2808         _type=gcc
2809         gcc_version=$($_cc --version | head -n1)
2810         gcc_basever=$($_cc -dumpversion)
2811         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2812         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2813         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2814         if ! $_cc -dumpversion | grep -q '^2\.'; then
2815             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2816         fi
2817         _cflags_speed='-O3'
2818         _cflags_size='-Os'
2819     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2820         _type=icc
2821         _ident=$($_cc --version | head -n1)
2822         _depflags='-MMD'
2823         _cflags_speed='-O3'
2824         _cflags_size='-Os'
2825         _cflags_noopt='-O1'
2826     elif $_cc -v 2>&1 | grep -q xlc; then
2827         _type=xlc
2828         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2829         _cflags_speed='-O5'
2830         _cflags_size='-O5 -qcompact'
2831     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2832         _type=ccc
2833         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2834         _DEPFLAGS='-M'
2835         _cflags_speed='-fast'
2836         _cflags_size='-O1'
2837         _flags_filter=ccc_flags
2838     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2839         test -d "$sysroot" || die "No valid sysroot specified."
2840         _type=armcc
2841         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2842         armcc_conf="$PWD/armcc.conf"
2843         $_cc --arm_linux_configure                 \
2844              --arm_linux_config_file="$armcc_conf" \
2845              --configure_sysroot="$sysroot"        \
2846              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2847              die "Error creating armcc configuration file."
2848         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2849         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2850         as_default="${cross_prefix}gcc"
2851         _depflags='-MMD'
2852         _cflags_speed='-O3'
2853         _cflags_size='-Os'
2854     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2855         _type=tms470
2856         _ident=$($_cc -version | head -n1 | tr -s ' ')
2857         _flags='--gcc --abi=eabi -me'
2858         _cc_e='-ppl -fe=$@'
2859         _cc_o='-fe=$@'
2860         _depflags='-ppa -ppd=$(@:.o=.d)'
2861         _cflags_speed='-O3 -mf=5'
2862         _cflags_size='-O3 -mf=2'
2863         _flags_filter=tms470_flags
2864     elif $_cc -v 2>&1 | grep -q clang; then
2865         _type=clang
2866         _ident=$($_cc --version | head -n1)
2867         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2868         _cflags_speed='-O3'
2869         _cflags_size='-Os'
2870     elif $_cc -V 2>&1 | grep -q Sun; then
2871         _type=suncc
2872         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2873         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2874         _DEPFLAGS='-xM1 -xc99'
2875         _ldflags='-std=c99'
2876         _cflags_speed='-O5'
2877         _cflags_size='-O5 -xspace'
2878         _flags_filter=suncc_flags
2879     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2880         _type=pathscale
2881         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2882         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2883         _cflags_speed='-O2'
2884         _cflags_size='-Os'
2885         _flags_filter='filter_out -Wdisabled-optimization'
2886     elif $_cc -v 2>&1 | grep -q Open64; then
2887         _type=open64
2888         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2889         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2890         _cflags_speed='-O2'
2891         _cflags_size='-Os'
2892         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2893     elif $_cc -V 2>&1 | grep -q Portland; then
2894         _type=pgi
2895         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2896         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2897         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2898         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2899         _cflags_noopt="-O1"
2900         _flags_filter=pgi_flags
2901     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2902         _type=armasm
2903         _ident=$($_cc | head -n1)
2904         # 4509: "This form of conditional instruction is deprecated"
2905         _flags="-nologo -ignore 4509"
2906         _flags_filter=armasm_flags
2907     elif $_cc 2>&1 | grep -q Microsoft; then
2908         _type=msvc
2909         _ident=$($cc 2>&1 | head -n1)
2910         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2911         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2912         _cflags_speed="-O2"
2913         _cflags_size="-O1"
2914         if $_cc 2>&1 | grep -q Linker; then
2915             _ld_o='-out:$@'
2916         else
2917             _ld_o='-Fe$@'
2918         fi
2919         _cc_o='-Fo$@'
2920         _cc_e='-P -Fi$@'
2921         _flags_filter=msvc_flags
2922         _ld_lib='lib%.a'
2923         _ld_path='-libpath:'
2924         _flags='-nologo'
2925         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2926         if [ $pfx = hostcc ]; then
2927             append _cflags -Dsnprintf=_snprintf
2928         fi
2929     elif $_cc 2>&1 | grep -q Intel; then
2930         _type=icl
2931         _ident=$($cc 2>&1 | head -n1)
2932         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2933         # Not only is O3 broken on 13.x+ but it is slower on all previous
2934         # versions (tested) as well.
2935         _cflags_speed="-O2"
2936         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2937         if $_cc 2>&1 | grep -q Linker; then
2938             _ld_o='-out:$@'
2939         else
2940             _ld_o='-Fe$@'
2941         fi
2942         _cc_o='-Fo$@'
2943         _cc_e='-P'
2944         _flags_filter=icl_flags
2945         _ld_lib='lib%.a'
2946         _ld_path='-libpath:'
2947         # -Qdiag-error to make icl error when seeing certain unknown arguments
2948         _flags='-nologo -Qdiag-error:4044,10157'
2949         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2950         # with MSVC which enables it by default.
2951         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2952         if [ $pfx = hostcc ]; then
2953             append _cflags -Dsnprintf=_snprintf
2954         fi
2955     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2956         _type=cparser
2957         _ident=$($_cc --version | head -n1)
2958         _depflags='-MMD'
2959         _cflags_speed='-O4'
2960         _cflags_size='-O2'
2961         _flags_filter=cparser_flags
2962     fi
2963
2964     eval ${pfx}_type=\$_type
2965     eval ${pfx}_ident=\$_ident
2966 }
2967
2968 set_ccvars(){
2969     eval ${1}_C=\${_cc_c-\${${1}_C}}
2970     eval ${1}_E=\${_cc_e-\${${1}_E}}
2971     eval ${1}_O=\${_cc_o-\${${1}_O}}
2972
2973     if [ -n "$_depflags" ]; then
2974         eval ${1}_DEPFLAGS=\$_depflags
2975     else
2976         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2977         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2978         eval DEP${1}FLAGS=\$_flags
2979     fi
2980 }
2981
2982 probe_cc cc "$cc"
2983 cflags_filter=$_flags_filter
2984 cflags_speed=$_cflags_speed
2985 cflags_size=$_cflags_size
2986 cflags_noopt=$_cflags_noopt
2987 add_cflags $_flags $_cflags
2988 cc_ldflags=$_ldflags
2989 set_ccvars CC
2990
2991 probe_cc hostcc "$host_cc"
2992 host_cflags_filter=$_flags_filter
2993 add_host_cflags  $_flags $_cflags
2994 set_ccvars HOSTCC
2995
2996 test -n "$cc_type" && enable $cc_type ||
2997     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2998
2999 : ${as_default:=$cc}
3000 : ${dep_cc_default:=$cc}
3001 : ${ld_default:=$cc}
3002 : ${host_ld_default:=$host_cc}
3003 set_default ar as dep_cc ld host_ld
3004
3005 probe_cc as "$as"
3006 asflags_filter=$_flags_filter
3007 add_asflags $_flags $_cflags
3008 set_ccvars AS
3009
3010 probe_cc ld "$ld"
3011 ldflags_filter=$_flags_filter
3012 add_ldflags $_flags $_ldflags
3013 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3014 LD_O=${_ld_o-$LD_O}
3015 LD_LIB=${_ld_lib-$LD_LIB}
3016 LD_PATH=${_ld_path-$LD_PATH}
3017
3018 probe_cc hostld "$host_ld"
3019 host_ldflags_filter=$_flags_filter
3020 add_host_ldflags $_flags $_ldflags
3021 HOSTLD_O=${_ld_o-$HOSTLD_O}
3022
3023 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3024     probe_cc depcc "$dep_cc"
3025     CCDEP=${_DEPCMD:-$DEPCMD}
3026     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3027     DEPCCFLAGS=$_flags
3028 fi
3029
3030 if $ar 2>&1 | grep -q Microsoft; then
3031     arflags="-nologo"
3032     ar_o='-out:$@'
3033 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3034     arflags="rq"
3035     ar_o='$@'
3036 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3037     arflags='-Xany -r -c'
3038     ar_o='$@'
3039 else
3040     arflags="rc"
3041     ar_o='$@'
3042 fi
3043
3044 add_cflags $extra_cflags
3045 add_asflags $extra_cflags
3046
3047 if test -n "$sysroot"; then
3048     case "$cc_type" in
3049         gcc|llvm_gcc|clang)
3050             add_cppflags --sysroot="$sysroot"
3051             add_ldflags --sysroot="$sysroot"
3052         ;;
3053         tms470)
3054             add_cppflags -I"$sysinclude"
3055             add_ldflags  --sysroot="$sysroot"
3056         ;;
3057     esac
3058 fi
3059
3060 if test "$cpu" = host; then
3061     enabled cross_compile &&
3062         die "--cpu=host makes no sense when cross-compiling."
3063
3064     case "$cc_type" in
3065         gcc|llvm_gcc)
3066             check_native(){
3067                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3068                 sed -n "/cc1.*$1=/{
3069                             s/.*$1=\\([^ ]*\\).*/\\1/
3070                             p
3071                             q
3072                         }" $TMPE
3073             }
3074             cpu=$(check_native -march || check_native -mcpu)
3075         ;;
3076     esac
3077
3078     test "${cpu:-host}" = host &&
3079         die "--cpu=host not supported with compiler $cc"
3080 fi
3081
3082 # Deal with common $arch aliases
3083 case "$arch" in
3084     aarch64|arm64)
3085         arch="aarch64"
3086     ;;
3087     arm*)
3088         arch="arm"
3089     ;;
3090     mips*|IP*)
3091         arch="mips"
3092     ;;
3093     parisc*|hppa*)
3094         arch="parisc"
3095     ;;
3096     "Power Macintosh"|ppc*|powerpc*)
3097         arch="ppc"
3098     ;;
3099     s390|s390x)
3100         arch="s390"
3101     ;;
3102     sh4|sh)
3103         arch="sh4"
3104     ;;
3105     sun4u|sparc*)
3106         arch="sparc"
3107     ;;
3108     tilegx|tile-gx)
3109         arch="tilegx"
3110     ;;
3111     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3112         arch="x86"
3113     ;;
3114 esac
3115
3116 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3117 enable $arch
3118
3119 # Add processor-specific flags
3120 if enabled aarch64; then
3121
3122     case $cpu in
3123         armv*)
3124             cpuflags="-march=$cpu"
3125         ;;
3126         *)
3127             cpuflags="-mcpu=$cpu"
3128         ;;
3129     esac
3130
3131 elif enabled alpha; then
3132
3133     cpuflags="-mcpu=$cpu"
3134
3135 elif enabled arm; then
3136
3137     check_arm_arch() {
3138         check_cpp_condition stddef.h \
3139             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3140             $cpuflags
3141     }
3142
3143     probe_arm_arch() {
3144         if   check_arm_arch 4;        then echo armv4;
3145         elif check_arm_arch 4T;       then echo armv4t;
3146         elif check_arm_arch 5;        then echo armv5;
3147         elif check_arm_arch 5E;       then echo armv5e;
3148         elif check_arm_arch 5T;       then echo armv5t;
3149         elif check_arm_arch 5TE;      then echo armv5te;
3150         elif check_arm_arch 5TEJ;     then echo armv5te;
3151         elif check_arm_arch 6;        then echo armv6;
3152         elif check_arm_arch 6J;       then echo armv6j;
3153         elif check_arm_arch 6K;       then echo armv6k;
3154         elif check_arm_arch 6Z;       then echo armv6z;
3155         elif check_arm_arch 6ZK;      then echo armv6zk;
3156         elif check_arm_arch 6T2;      then echo armv6t2;
3157         elif check_arm_arch 7;        then echo armv7;
3158         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3159         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3160         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3161         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3162         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3163         fi
3164     }
3165
3166     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3167
3168     case $cpu in
3169         armv*)
3170             cpuflags="-march=$cpu"
3171             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3172         ;;
3173         *)
3174             cpuflags="-mcpu=$cpu"
3175             case $cpu in
3176                 cortex-a*)                               subarch=armv7a  ;;
3177                 cortex-r*)                               subarch=armv7r  ;;
3178                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3179                 arm11*)                                  subarch=armv6   ;;
3180                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3181                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3182                 *)                             subarch=$(probe_arm_arch) ;;
3183             esac
3184         ;;
3185     esac
3186
3187     case "$subarch" in
3188         armv5t*)    enable fast_clz                ;;
3189         armv[6-8]*) enable fast_clz fast_unaligned ;;
3190     esac
3191
3192 elif enabled avr32; then
3193
3194     case $cpu in
3195         ap7[02]0[0-2])
3196             subarch="avr32_ap"
3197             cpuflags="-mpart=$cpu"
3198         ;;
3199         ap)
3200             subarch="avr32_ap"
3201             cpuflags="-march=$cpu"
3202         ;;
3203         uc3[ab]*)
3204             subarch="avr32_uc"
3205             cpuflags="-mcpu=$cpu"
3206         ;;
3207         uc)
3208             subarch="avr32_uc"
3209             cpuflags="-march=$cpu"
3210         ;;
3211     esac
3212
3213 elif enabled bfin; then
3214
3215     cpuflags="-mcpu=$cpu"
3216
3217 elif enabled mips; then
3218
3219     cpuflags="-march=$cpu"
3220
3221 elif enabled ppc; then
3222
3223     disable ldbrx
3224
3225     case $(tolower $cpu) in
3226         601|ppc601|powerpc601)
3227             cpuflags="-mcpu=601"
3228             disable altivec
3229         ;;
3230         603*|ppc603*|powerpc603*)
3231             cpuflags="-mcpu=603"
3232             disable altivec
3233         ;;
3234         604*|ppc604*|powerpc604*)
3235             cpuflags="-mcpu=604"
3236             disable altivec
3237         ;;
3238         g3|75*|ppc75*|powerpc75*)
3239             cpuflags="-mcpu=750"
3240             disable altivec
3241         ;;
3242         g4|745*|ppc745*|powerpc745*)
3243             cpuflags="-mcpu=7450"
3244         ;;
3245         74*|ppc74*|powerpc74*)
3246             cpuflags="-mcpu=7400"
3247         ;;
3248         g5|970|ppc970|powerpc970)
3249             cpuflags="-mcpu=970"
3250         ;;
3251         power[3-7]*)
3252             cpuflags="-mcpu=$cpu"
3253         ;;
3254         cell)
3255             cpuflags="-mcpu=cell"
3256             enable ldbrx
3257         ;;
3258         e500mc)
3259             cpuflags="-mcpu=e500mc"
3260             disable altivec
3261         ;;
3262         e500v2)
3263             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3264             disable altivec
3265             disable dcbzl
3266         ;;
3267         e500)
3268             cpuflags="-mcpu=8540 -mhard-float"
3269             disable altivec
3270             disable dcbzl
3271         ;;
3272     esac
3273
3274 elif enabled sparc; then
3275
3276     case $cpu in
3277         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3278             cpuflags="-mcpu=$cpu"
3279         ;;
3280         ultrasparc*|niagara[234])
3281             cpuflags="-mcpu=$cpu"
3282         ;;
3283     esac
3284
3285 elif enabled x86; then
3286
3287     case $cpu in
3288         i[345]86|pentium)
3289             cpuflags="-march=$cpu"
3290             disable mmx
3291         ;;
3292         # targets that do NOT support nopl and conditional mov (cmov)
3293         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3294             cpuflags="-march=$cpu"
3295             disable i686
3296         ;;
3297         # targets that do support nopl and conditional mov (cmov)
3298         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3299             cpuflags="-march=$cpu"
3300             enable i686
3301             enable fast_cmov
3302         ;;
3303         # targets that do support conditional mov but on which it's slow
3304         pentium4|pentium4m|prescott|nocona)
3305             cpuflags="-march=$cpu"
3306             enable i686
3307             disable fast_cmov
3308         ;;
3309     esac
3310
3311 fi
3312
3313 if [ "$cpu" != generic ]; then
3314     add_cflags  $cpuflags
3315     add_asflags $cpuflags
3316 fi
3317
3318 # compiler sanity check
3319 check_exec <<EOF
3320 int main(void){ return 0; }
3321 EOF
3322 if test "$?" != 0; then
3323     echo "$cc is unable to create an executable file."
3324     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3325         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3326         echo "Only do this if you know what cross compiling means."
3327     fi
3328     die "C compiler test failed."
3329 fi
3330
3331 add_cppflags -D_ISOC99_SOURCE
3332 check_cflags -std=c99
3333 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3334 #include <stdlib.h>
3335 EOF
3336 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3337 #include <stdlib.h>
3338 EOF
3339
3340 add_host_cppflags -D_ISOC99_SOURCE
3341 check_host_cflags -std=c99
3342 check_host_cflags -Wall
3343 check_host_cflags -O3
3344
3345 check_64bit(){
3346     arch32=$1
3347     arch64=$2
3348     expr=$3
3349     check_code cc "" "int test[2*($expr) - 1]" &&
3350         subarch=$arch64 || subarch=$arch32
3351 }
3352
3353 case "$arch" in
3354     aarch64|alpha|ia64)
3355         spic=$shared
3356     ;;
3357     mips)
3358         check_64bit mips mips64 '_MIPS_SIM > 1'
3359         spic=$shared
3360     ;;
3361     parisc)
3362         check_64bit parisc parisc64 'sizeof(void *) > 4'
3363         spic=$shared
3364     ;;
3365     ppc)
3366         check_64bit ppc ppc64 'sizeof(void *) > 4'
3367         spic=$shared
3368     ;;
3369     s390)
3370         check_64bit s390 s390x 'sizeof(void *) > 4'
3371         spic=$shared
3372     ;;
3373     sparc)
3374         check_64bit sparc sparc64 'sizeof(void *) > 4'
3375         spic=$shared
3376     ;;
3377     x86)
3378         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3379         if test "$subarch" = "x86_64"; then
3380             spic=$shared
3381         fi
3382     ;;
3383 esac
3384
3385 enable $subarch
3386 enabled spic && enable_weak pic
3387
3388 # OS specific
3389 case $target_os in
3390     aix)
3391         SHFLAGS=-shared
3392         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3393         enabled shared && add_ldflags -Wl,-brtl
3394         ;;
3395     android)
3396         disable symver
3397         SLIB_INSTALL_NAME='$(SLIBNAME)'
3398         SLIB_INSTALL_LINKS=
3399         # soname not set on purpose
3400         SHFLAGS=-shared
3401         ;;
3402     haiku)
3403         prefix_default="/boot/common"
3404         network_extralibs="-lnetwork"
3405         host_libs=
3406         ;;
3407     sunos)
3408         SHFLAGS='-shared -Wl,-h,$$(@F)'
3409         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3410         network_extralibs="-lsocket -lnsl"
3411         # When using suncc to build, the Solaris linker will mark
3412         # an executable with each instruction set encountered by
3413         # the Solaris assembler.  As our libraries contain their own
3414         # guards for processor-specific code, instead suppress
3415         # generation of the HWCAPS ELF section on Solaris x86 only.
3416         enabled_all suncc x86 &&
3417             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3418             add_ldflags -Wl,-M,mapfile
3419         nm_default='nm -P -g'
3420         ;;
3421     netbsd)
3422         disable symver
3423         oss_indev_extralibs="-lossaudio"
3424         oss_outdev_extralibs="-lossaudio"
3425         ;;
3426     openbsd|bitrig)
3427         disable symver
3428         SHFLAGS='-shared'
3429         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3430         SLIB_INSTALL_LINKS=
3431         oss_indev_extralibs="-lossaudio"
3432         oss_outdev_extralibs="-lossaudio"
3433         ;;
3434     dragonfly)
3435         disable symver
3436         ;;
3437     freebsd)
3438         ;;
3439     bsd/os)
3440         add_extralibs -lpoll -lgnugetopt
3441         ;;
3442     darwin)
3443         enabled ppc && add_asflags -force_cpusubtype_ALL
3444         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3445         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3446         add_ldflags -Wl,-dynamic,-search_paths_first
3447         SLIBSUF=".dylib"
3448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3450         objformat="macho"
3451         enabled x86_64 && objformat="macho64"
3452         enabled_any pic shared ||
3453             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3454         ;;
3455     mingw32*)
3456         if test $target_os = "mingw32ce"; then
3457             disable network
3458         else
3459             target_os=mingw32
3460         fi
3461         LIBTARGET=i386
3462         if enabled x86_64; then
3463             LIBTARGET="i386:x86-64"
3464         elif enabled arm; then
3465             LIBTARGET=arm-wince
3466         fi
3467         check_ldflags -Wl,--nxcompat
3468         check_ldflags -Wl,--dynamicbase
3469         shlibdir_default="$bindir_default"
3470         SLIBPREF=""
3471         SLIBSUF=".dll"
3472         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3473         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3474         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3475         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3476         SLIB_INSTALL_LINKS=
3477         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3478         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3479         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3480         objformat="win32"
3481         dlltool="${cross_prefix}dlltool"
3482         ranlib=:
3483         enable dos_paths
3484         ;;
3485     win32|win64)
3486         disable symver
3487         if enabled shared; then
3488             # Link to the import library instead of the normal static library
3489             # for shared libs.
3490             LD_LIB='%.lib'
3491             # Cannot build both shared and static libs with MSVC or icl.
3492             disable static
3493         fi
3494         shlibdir_default="$bindir_default"
3495         SLIBPREF=""
3496         SLIBSUF=".dll"
3497         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3498         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3499         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3500         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3501         SLIB_INSTALL_LINKS=
3502         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3503         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3504         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3505         objformat="win32"
3506         ranlib=:
3507         enable dos_paths
3508         ;;
3509     cygwin*)
3510         target_os=cygwin
3511         shlibdir_default="$bindir_default"
3512         SLIBPREF="cyg"
3513         SLIBSUF=".dll"
3514         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3515         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3516         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3517         SLIB_INSTALL_LINKS=
3518         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3519         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3520         objformat="win32"
3521         enable dos_paths
3522         ;;
3523     *-dos|freedos|opendos)
3524         network_extralibs="-lsocket"
3525         objformat="coff"
3526         enable dos_paths
3527         add_cppflags -U__STRICT_ANSI__
3528         ;;
3529     linux)
3530         enable dv1394
3531         ;;
3532     irix*)
3533         target_os=irix
3534         ranlib="echo ignoring ranlib"
3535         ;;
3536     os/2*)
3537         ln_s="cp -f"
3538         objformat="aout"
3539         add_cppflags -D_GNU_SOURCE
3540         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3541         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3542         LIBSUF="_s.a"
3543         SLIBPREF=""
3544         SLIBSUF=".dll"
3545         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3546         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3547         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3548             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3549             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3550             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3551             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3552             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3553         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3554             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3555         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3556         enable dos_paths
3557         ;;
3558     gnu/kfreebsd)
3559         add_cppflags -D_BSD_SOURCE
3560         ;;
3561     gnu)
3562         ;;
3563     qnx)
3564         add_cppflags -D_QNX_SOURCE
3565         network_extralibs="-lsocket"
3566         ;;
3567     symbian)
3568         SLIBSUF=".dll"
3569         enable dos_paths
3570         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3571         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3572         add_ldflags -Wl,--target1-abs,--no-undefined \
3573                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3574                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3575         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3576                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3577                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3578         ;;
3579     osf1)
3580         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3581         ;;
3582     minix)
3583         ;;
3584     plan9)
3585         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3586                      -D_REENTRANT_SOURCE        \
3587                      -D_RESEARCH_SOURCE         \
3588                      -DFD_SETSIZE=96            \
3589                      -DHAVE_SOCK_OPTS
3590         add_compat strtod.o strtod=avpriv_strtod
3591         network_extralibs='-lbsd'
3592         exeobjs=compat/plan9/main.o
3593         cp_f='cp'
3594         ;;
3595     none)
3596         ;;
3597     *)
3598         die "Unknown OS '$target_os'."
3599         ;;
3600 esac
3601
3602 # determine libc flavour
3603
3604 probe_libc(){
3605     pfx=$1
3606     pfx_no_=${pfx%_}
3607     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3608     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3609         eval ${pfx}libc_type=uclibc
3610         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3611     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3612         eval ${pfx}libc_type=glibc
3613         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3614     # MinGW headers can be installed on Cygwin, so check for newlib first.
3615     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3616         eval ${pfx}libc_type=newlib
3617         add_${pfx}cppflags -U__STRICT_ANSI__
3618     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3619     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3620         eval ${pfx}libc_type=mingw64
3621         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3622         eval test \$${pfx_no_}cc_type = "gcc" &&
3623             add_${pfx}cppflags -D__printf__=__gnu_printf__
3624     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3625          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3626         eval ${pfx}libc_type=mingw32
3627         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3628             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3629             die "ERROR: MinGW32 runtime version must be >= 3.15."
3630         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3631         eval test \$${pfx_no_}cc_type = "gcc" &&
3632             add_${pfx}cppflags -D__printf__=__gnu_printf__
3633     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3634         eval ${pfx}libc_type=msvcrt
3635         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3636         # 0x601 by default unless something else is set by the user.
3637         # This can easily lead to us detecting functions only present
3638         # in such new versions and producing binaries requiring windows 7.0.
3639         # Therefore explicitly set the default to XP unless the user has
3640         # set something else on the command line.
3641         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3642             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3643     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3644         eval ${pfx}libc_type=klibc
3645     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3646         eval ${pfx}libc_type=bionic
3647     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3648         eval ${pfx}libc_type=solaris
3649         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3650     fi
3651 }
3652
3653 probe_libc
3654 test -n "$libc_type" && enable libc_$libc_type
3655 probe_libc host_
3656 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3657
3658 case $libc_type in
3659     bionic)
3660         add_compat strtod.o strtod=avpriv_strtod
3661         ;;
3662     msvcrt)
3663         add_compat strtod.o strtod=avpriv_strtod
3664         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3665                                      _snprintf=avpriv_snprintf  \
3666                                      vsnprintf=avpriv_vsnprintf
3667         ;;
3668 esac
3669
3670 # hacks for compiler/libc/os combinations
3671
3672 if enabled_all tms470 libc_glibc; then
3673     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3674     add_cppflags -D__USER_LABEL_PREFIX__=
3675     add_cppflags -D__builtin_memset=memset
3676     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3677     add_cflags   -pds=48    # incompatible redefinition of macro
3678 fi
3679
3680 if enabled_all ccc libc_glibc; then
3681     add_ldflags -Wl,-z,now  # calls to libots crash without this
3682 fi
3683
3684 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3685     add_cppflags '-I\$(SRC_PATH)/compat/float'
3686
3687 esc(){
3688     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3689 }
3690
3691 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3692
3693 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3694
3695 set_default $PATHS_LIST
3696 set_default nm
3697
3698 # we need to build at least one lib type
3699 if ! enabled_any static shared; then
3700     cat <<EOF
3701 At least one library type must be built.
3702 Specify --enable-static to build the static libraries or --enable-shared to
3703 build the shared libraries as well. To only build the shared libraries specify
3704 --disable-static in addition to --enable-shared.
3705 EOF
3706     exit 1;
3707 fi
3708
3709 die_license_disabled() {
3710     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3711 }
3712
3713 die_license_disabled gpl libcdio
3714 die_license_disabled gpl libx264
3715 die_license_disabled gpl libx265
3716 die_license_disabled gpl libxavs
3717 die_license_disabled gpl libxvid
3718 die_license_disabled gpl x11grab
3719
3720 die_license_disabled nonfree libfaac
3721 die_license_disabled nonfree libfdk_aac
3722 die_license_disabled nonfree openssl
3723
3724 die_license_disabled version3 libopencore_amrnb
3725 die_license_disabled version3 libopencore_amrwb
3726 die_license_disabled version3 libvo_aacenc
3727 die_license_disabled version3 libvo_amrwbenc
3728
3729 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3730
3731 disabled optimizations || check_cflags -fomit-frame-pointer
3732
3733 enable_weak_pic() {
3734     disabled pic && return
3735     enable pic
3736     add_cppflags -DPIC
3737     case "$target_os" in
3738     mingw*|cygwin*)
3739         ;;
3740     *)
3741         add_cflags -fPIC
3742         ;;
3743     esac
3744     add_asflags  -fPIC
3745 }
3746
3747 enabled pic && enable_weak_pic
3748
3749 check_cc <<EOF || die "Symbol mangling check failed."
3750 int ff_extern;
3751 EOF
3752 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3753 extern_prefix=${sym%%ff_extern*}
3754
3755 check_cc <<EOF && enable_weak inline_asm
3756 void foo(void) { __asm__ volatile ("" ::); }
3757 EOF
3758
3759 _restrict=
3760 for restrict_keyword in restrict __restrict__ __restrict; do
3761     check_cc <<EOF && _restrict=$restrict_keyword && break
3762 void foo(char * $restrict_keyword p);
3763 EOF
3764 done
3765
3766 check_cc <<EOF && enable pragma_deprecated
3767 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3768 EOF
3769
3770 check_cc <<EOF && enable attribute_packed
3771 struct { int x; } __attribute__((packed)) x;
3772 EOF
3773
3774 check_cc <<EOF && enable attribute_may_alias
3775 union { int x; } __attribute__((may_alias)) x;
3776 EOF
3777
3778 check_cc <<EOF || die "endian test failed"
3779 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3780 EOF
3781 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3782
3783 check_gas() {
3784     log "check_gas using '$as' as AS"
3785     # :vararg is used on aarch64, arm and ppc altivec
3786     check_as <<EOF || return 1
3787 .macro m n, y:vararg=0
3788 \n: .int \y
3789 .endm
3790 m x
3791 EOF
3792     # .altmacro is only used in arm asm
3793     ! enabled arm || check_as <<EOF || return 1
3794 .altmacro
3795 EOF
3796     enable gnu_as
3797     return 0
3798 }
3799
3800 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3801     nogas=:
3802     enabled_any arm aarch64 && nogas=die
3803     enabled_all ppc altivec && nogas=warn
3804     as_noop=-v
3805
3806     case $as_type in
3807         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3808         gcc)  gaspp_as_type=gas ;;
3809         *)    gaspp_as_type=$as_type ;;
3810     esac
3811
3812     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3813
3814     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3815         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3816
3817     if ! check_gas ; then
3818         as=${gas:=$as}
3819         check_gas || \
3820             $nogas "GNU assembler not found, install/update gas-preprocessor"
3821     fi
3822
3823     check_as <<EOF && enable as_func
3824 .func test
3825 .endfunc
3826 EOF
3827 fi
3828
3829 check_inline_asm inline_asm_labels '"1:\n"'
3830
3831 if enabled aarch64; then
3832     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3833     # internal assembler in clang 3.3 does not support this instruction
3834     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3835     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3836
3837     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3838
3839 elif enabled alpha; then
3840
3841     check_cflags -mieee
3842
3843 elif enabled arm; then
3844
3845     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3846     enabled thumb && check_cflags -mthumb || check_cflags -marm
3847
3848     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3849         enable vfp_args
3850     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3851         case "${cross_prefix:-$cc}" in
3852             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3853             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3854 __asm__ (".eabi_attribute 28, 1");
3855 int main(void) { return 0; }
3856 EOF
3857         esac
3858         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3859     fi
3860
3861     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3862     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3863     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3864     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3865     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3866     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3867
3868     [ $target_os = linux ] || [ $target_os = android ] ||
3869         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3870             $ARCH_EXT_LIST_ARM
3871
3872     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3873
3874     check_as <<EOF && enable as_dn_directive
3875 ra .dn d0.i16
3876 .unreq ra
3877 EOF
3878
3879     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3880
3881 elif enabled mips; then
3882
3883     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3884
3885 elif enabled parisc; then
3886
3887     if enabled gcc; then
3888         case $($cc -dumpversion) in
3889             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3890         esac
3891     fi
3892
3893 elif enabled ppc; then
3894
3895     enable local_aligned_8 local_aligned_16
3896
3897     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3898     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3899     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3900     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3901
3902     # AltiVec flags: The FSF version of GCC differs from the Apple version
3903     if enabled altivec; then
3904         check_cflags -maltivec -mabi=altivec &&
3905         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3906         check_cflags -faltivec
3907
3908         # check if our compiler supports Motorola AltiVec C API
3909         check_cc <<EOF || disable altivec
3910 $inc_altivec_h
3911 int main(void) {
3912     vector signed int v1 = (vector signed int) { 0 };
3913     vector signed int v2 = (vector signed int) { 1 };
3914     v1 = vec_add(v1, v2);
3915     return 0;
3916 }
3917 EOF
3918
3919         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3920     fi
3921
3922 elif enabled x86; then
3923
3924     check_builtin rdtsc    intrin.h   "__rdtsc()"
3925     check_builtin mm_empty mmintrin.h "_mm_empty()"
3926
3927     enable local_aligned_8 local_aligned_16
3928
3929     # check whether EBP is available on x86
3930     # As 'i' is stored on the stack, this program will crash
3931     # if the base pointer is used to access it because the
3932     # base pointer is cleared in the inline assembly code.
3933     check_exec_crash <<EOF && enable ebp_available
3934 volatile int i=0;
3935 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3936 return i;
3937 EOF
3938
3939     # check whether EBX is available on x86
3940     check_inline_asm ebx_available '""::"b"(0)' &&
3941         check_inline_asm ebx_available '"":::"%ebx"'
3942
3943     # check whether xmm clobbers are supported
3944     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3945
3946     # check whether binutils is new enough to compile SSSE3/MMXEXT
3947     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3948     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3949
3950     if ! disabled_any asm mmx yasm; then
3951         if check_cmd $yasmexe --version; then
3952             enabled x86_64 && yasm_extra="-m amd64"
3953             yasm_debug="-g dwarf2"
3954         elif check_cmd nasm -v; then
3955             yasmexe=nasm
3956             yasm_debug="-g -F dwarf"
3957             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3958         fi
3959
3960         YASMFLAGS="-f $objformat $yasm_extra"
3961         enabled pic               && append YASMFLAGS "-DPIC"
3962         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3963         case "$objformat" in
3964             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3965         esac
3966
3967         check_yasm "movbe ecx, [5]" && enable yasm ||
3968             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3969         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3970         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3971         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3972         check_yasm "CPU amdnop" || disable cpunop
3973     fi
3974
3975     case "$cpu" in
3976         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3977             disable fast_clz
3978         ;;
3979     esac
3980
3981 fi
3982
3983 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3984
3985 check_ldflags -Wl,--as-needed
3986
3987 if check_func dlopen; then
3988     ldl=
3989 elif check_func dlopen -ldl; then
3990     ldl=-ldl
3991 fi
3992
3993 if ! disabled network; then
3994     check_func getaddrinfo $network_extralibs
3995     check_func getservbyport $network_extralibs
3996     check_func inet_aton $network_extralibs
3997
3998     check_type netdb.h "struct addrinfo"
3999     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4000     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4001     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4002     check_type poll.h "struct pollfd"
4003     check_type netinet/sctp.h "struct sctp_event_subscribe"
4004     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4005     check_type netinet/in.h "struct sockaddr_in6"
4006     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4007     check_type "sys/types.h sys/socket.h" socklen_t
4008
4009     # Prefer arpa/inet.h over winsock2
4010     if check_header arpa/inet.h ; then
4011         check_func closesocket
4012     elif check_header winsock2.h ; then
4013         check_func_headers winsock2.h closesocket -lws2 &&
4014             network_extralibs="-lws2" ||
4015         { check_func_headers winsock2.h closesocket -lws2_32 &&
4016             network_extralibs="-lws2_32"; } || disable winsock2_h network
4017         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4018
4019         check_type ws2tcpip.h socklen_t
4020         check_type ws2tcpip.h "struct addrinfo"
4021         check_type ws2tcpip.h "struct group_source_req"
4022         check_type ws2tcpip.h "struct ip_mreq_source"
4023         check_type ws2tcpip.h "struct ipv6_mreq"
4024         check_type winsock2.h "struct pollfd"
4025         check_struct winsock2.h "struct sockaddr" sa_len
4026         check_type ws2tcpip.h "struct sockaddr_in6"
4027         check_type ws2tcpip.h "struct sockaddr_storage"
4028     else
4029         disable network
4030     fi
4031 fi
4032
4033 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4034 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4035 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4036 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4037
4038 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4039 check_func  ${malloc_prefix}memalign            && enable memalign
4040 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4041
4042 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4043     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
4044
4045 check_func  fcntl
4046 check_func  fork
4047 check_func  gethrtime
4048 check_func  getopt
4049 check_func  getrusage
4050 check_func  gettimeofday
4051 check_func  isatty
4052 check_func  localtime_r
4053 check_func  mach_absolute_time
4054 check_func  mkstemp
4055 check_func  mmap
4056 check_func  mprotect
4057 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4058 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4059 check_func  sched_getaffinity
4060 check_func  setrlimit
4061 check_func  strerror_r
4062 check_func  strptime
4063 check_func  sysconf
4064 check_func  sysctl
4065 check_func  usleep
4066
4067 check_func_headers io.h setmode
4068 check_func_headers stdlib.h getenv
4069
4070 check_func_headers windows.h CoTaskMemFree -lole32
4071 check_func_headers windows.h GetProcessAffinityMask
4072 check_func_headers windows.h GetProcessTimes
4073 check_func_headers windows.h GetSystemTimeAsFileTime
4074 check_func_headers windows.h MapViewOfFile
4075 check_func_headers windows.h SetConsoleTextAttribute
4076 check_func_headers windows.h Sleep
4077 check_func_headers windows.h VirtualAlloc
4078
4079 check_header direct.h
4080 check_header dlfcn.h
4081 check_header dxva.h
4082 check_header dxva2api.h
4083 check_header io.h
4084 check_header mach/mach_time.h
4085 check_header malloc.h
4086 check_header poll.h
4087 check_header sys/mman.h
4088 check_header sys/param.h
4089 check_header sys/resource.h
4090 check_header sys/select.h
4091 check_header sys/time.h
4092 check_header sys/un.h
4093 check_header unistd.h
4094 check_header vdpau/vdpau.h
4095 check_header vdpau/vdpau_x11.h
4096 check_header VideoDecodeAcceleration/VDADecoder.h
4097 check_header windows.h
4098 check_header X11/extensions/XvMClib.h
4099
4100 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4101 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4102 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4103
4104 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4105
4106 if ! disabled w32threads && ! enabled pthreads; then
4107     check_func_headers "windows.h process.h" _beginthreadex &&
4108         enable w32threads || disable w32threads
4109 fi
4110
4111 # check for some common methods of building with pthread support
4112 # do this before the optional library checks as some of them require pthreads
4113 if ! disabled pthreads && ! enabled w32threads; then
4114     enable pthreads
4115     if check_func pthread_join -pthread; then
4116         add_cflags -pthread
4117         add_extralibs -pthread
4118     elif check_func pthread_join -pthreads; then
4119         add_cflags -pthreads
4120         add_extralibs -pthreads
4121     elif check_func pthread_join -lpthreadGC2; then
4122         add_extralibs -lpthreadGC2
4123     elif check_lib pthread.h pthread_join -lpthread; then
4124         :
4125     elif ! check_func pthread_join; then
4126         disable pthreads
4127     fi
4128 fi
4129
4130 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4131 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4132
4133 check_lib math.h sin -lm && LIBM="-lm"
4134 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4135
4136 atan2f_args=2
4137 ldexpf_args=2
4138 powf_args=2
4139
4140 for func in $MATH_FUNCS; do
4141     eval check_mathfunc $func \${${func}_args:-1}
4142 done
4143
4144 # these are off by default, so fail if requested and not available
4145 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4146                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4147                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4148 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4149 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4150 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4151 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4152 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4153 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4154 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4155 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4156                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4157                                done || die "ERROR: libgsm not found"; }
4158 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4159 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4160 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4161 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4162 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4163 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4164                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4165 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4166 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4167 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4168 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4169 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4170 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4171 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4172 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4173 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4174 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4175 enabled libvpx            && {
4176     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4177                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4178     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4179                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4180     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4181     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4182 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4183 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4184 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4185                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4186                                die "ERROR: libx264 version must be >= 0.118."; }
4187 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4188                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4189                                die "ERROR: libx265 version must be >= 17."; }
4190 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4191 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4192 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4193                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4194                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4195                                die "ERROR: openssl not found"; }
4196
4197 if enabled gnutls; then
4198     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4199     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4200 fi
4201
4202 # libdc1394 check
4203 if enabled libdc1394; then
4204     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4205         enable libdc1394_2; } ||
4206     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4207         enable libdc1394_1; } ||
4208     die "ERROR: No version of libdc1394 found "
4209 fi
4210
4211 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4212     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4213     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4214     enable sdl
4215 fi
4216
4217 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4218 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4219
4220 check_header linux/fb.h
4221 check_header linux/videodev2.h
4222 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4223
4224 check_header sys/videoio.h
4225
4226 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4227 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4228 # w32api 3.12 had it defined wrong
4229 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4230
4231 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4232 { check_header dev/bktr/ioctl_meteor.h &&
4233   check_header dev/bktr/ioctl_bt848.h; } ||
4234 { check_header machine/ioctl_meteor.h &&
4235   check_header machine/ioctl_bt848.h; } ||
4236 { check_header dev/video/meteor/ioctl_meteor.h &&
4237   check_header dev/video/bktr/ioctl_bt848.h; } ||
4238 check_header dev/ic/bt8xx.h
4239
4240 check_header sndio.h
4241 check_header sys/soundcard.h
4242 check_header soundcard.h
4243
4244 enabled_any alsa_indev alsa_outdev &&
4245     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4246
4247 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4248     check_func jack_port_get_latency_range -ljack
4249
4250 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4251
4252 if enabled libcdio; then
4253     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4254     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4255 fi
4256
4257 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4258
4259 enabled x11grab                                           &&
4260 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4261 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4262 { enabled xlib || die "ERROR: Xlib not found"; }
4263
4264 enabled vdpau &&
4265     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4266     disable vdpau
4267
4268 enabled vdpau && enabled xlib &&
4269     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4270     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4271     enable vdpau_x11
4272
4273 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4274
4275 # add some useful compiler flags if supported
4276 check_cflags -Wdeclaration-after-statement
4277 check_cflags -Wall
4278 check_cflags -Wdisabled-optimization
4279 check_cflags -Wpointer-arith
4280 check_cflags -Wredundant-decls
4281 check_cflags -Wcast-qual
4282 check_cflags -Wwrite-strings
4283 check_cflags -Wtype-limits
4284 check_cflags -Wundef
4285 check_cflags -Wmissing-prototypes
4286 check_cflags -Wstrict-prototypes
4287 enabled extra_warnings && check_cflags -Winline
4288
4289 check_disable_warning(){
4290     warning_flag=-W${1#-Wno-}
4291     test_cflags $warning_flag && add_cflags $1
4292 }
4293
4294 check_disable_warning -Wno-parentheses
4295 check_disable_warning -Wno-switch
4296 check_disable_warning -Wno-format-zero-length
4297 check_disable_warning -Wno-pointer-sign
4298
4299 # add some linker flags
4300 check_ldflags -Wl,--warn-common
4301 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4302 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4303 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4304
4305 # add some strip flags
4306 # -wN '..@*' is more selective than -x, but not available everywhere.
4307 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4308
4309 enabled neon_clobber_test &&
4310     check_ldflags -Wl,--wrap,avcodec_open2              \
4311                   -Wl,--wrap,avcodec_decode_audio4      \
4312                   -Wl,--wrap,avcodec_decode_video2      \
4313                   -Wl,--wrap,avcodec_decode_subtitle2   \
4314                   -Wl,--wrap,avcodec_encode_audio2      \
4315                   -Wl,--wrap,avcodec_encode_video2      \
4316                   -Wl,--wrap,avcodec_encode_subtitle    \
4317                   -Wl,--wrap,avresample_convert ||
4318     disable neon_clobber_test
4319
4320 enabled xmm_clobber_test &&
4321     check_ldflags -Wl,--wrap,avcodec_open2              \
4322                   -Wl,--wrap,avcodec_decode_audio4      \
4323                   -Wl,--wrap,avcodec_decode_video2      \
4324                   -Wl,--wrap,avcodec_decode_subtitle2   \
4325                   -Wl,--wrap,avcodec_encode_audio2      \
4326                   -Wl,--wrap,avcodec_encode_video2      \
4327                   -Wl,--wrap,avcodec_encode_subtitle    \
4328                   -Wl,--wrap,avresample_convert         \
4329                   -Wl,--wrap,sws_scale ||
4330     disable xmm_clobber_test
4331
4332 echo "X{};" > $TMPV
4333 if test_ldflags -Wl,--version-script,$TMPV; then
4334     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4335     check_cc <<EOF && enable symver_asm_label
4336 void ff_foo(void) __asm__ ("av_foo@VERSION");
4337 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4338 EOF
4339     check_cc <<EOF && enable symver_gnu_asm
4340 __asm__(".symver ff_foo,av_foo@VERSION");
4341 void ff_foo(void) {}
4342 EOF
4343 fi
4344
4345 if [ -z "$optflags" ]; then
4346     if enabled small; then
4347         optflags=$cflags_size
4348     elif enabled optimizations; then
4349         optflags=$cflags_speed
4350     else
4351         optflags=$cflags_noopt
4352     fi
4353 fi
4354
4355 check_optflags(){
4356     check_cflags "$@"
4357     enabled lto && check_ldflags "$@"
4358 }
4359
4360
4361 if enabled lto; then
4362     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4363     check_cflags  -flto
4364     check_ldflags -flto $cpuflags
4365 fi
4366
4367 check_optflags $optflags
4368 check_optflags -fno-math-errno
4369 check_optflags -fno-signed-zeros
4370
4371 if enabled icc; then
4372     # Just warnings, no remarks
4373     check_cflags -w1
4374     # -wd: Disable following warnings
4375     # 144, 167, 556: -Wno-pointer-sign
4376     # 1292: attribute "foo" ignored
4377     # 1419: external declaration in primary source file
4378     # 10006: ignoring unknown option -fno-signed-zeros
4379     # 10148: ignoring unknown option -Wno-parentheses
4380     # 10156: ignoring option '-W'; no argument required
4381     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4382     # 11030: Warning unknown option --as-needed
4383     # 10156: ignoring option '-export'; no argument required
4384     check_ldflags -wd10156,11030
4385     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4386     enable ebp_available
4387     if enabled x86_32; then
4388         icc_version=$($cc -dumpversion)
4389         test ${icc_version%%.*} -ge 11 &&
4390             check_cflags -falign-stack=maintain-16-byte ||
4391             disable aligned_stack
4392     fi
4393 elif enabled ccc; then
4394     # disable some annoying warnings
4395     add_cflags -msg_disable bitnotint
4396     add_cflags -msg_disable mixfuncvoid
4397     add_cflags -msg_disable nonstandcast
4398     add_cflags -msg_disable unsupieee
4399 elif enabled gcc; then
4400     check_optflags -fno-tree-vectorize
4401     check_cflags -Werror=implicit-function-declaration
4402     check_cflags -Werror=missing-prototypes
4403     check_cflags -Werror=return-type
4404     check_cflags -Werror=declaration-after-statement
4405     check_cflags -Werror=vla
4406     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4407 elif enabled llvm_gcc; then
4408     check_cflags -mllvm -stack-alignment=16
4409 elif enabled clang; then
4410     check_cflags -mllvm -stack-alignment=16
4411     check_cflags -Qunused-arguments
4412     check_cflags -Werror=implicit-function-declaration
4413     check_cflags -Werror=missing-prototypes
4414     check_cflags -Werror=return-type
4415 elif enabled cparser; then
4416     add_cflags -Wno-missing-variable-declarations
4417     add_cflags -Wno-empty-statement
4418 elif enabled armcc; then
4419     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4420     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4421     # 2523: use of inline assembly is deprecated
4422     add_cflags -W${armcc_opt},--diag_suppress=2523
4423     add_cflags -W${armcc_opt},--diag_suppress=1207
4424     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4425     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4426     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4427     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4428 elif enabled tms470; then
4429     add_cflags -pds=824 -pds=837
4430     disable inline_asm
4431 elif enabled pathscale; then
4432     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4433 elif enabled_any msvc icl; then
4434     enabled x86_32 && disable aligned_stack
4435     enabled_all x86_32 debug && add_cflags -Oy-
4436     enabled debug && add_ldflags -debug
4437     enable pragma_deprecated
4438     if enabled icl; then
4439         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4440         # (correctly) on icl 13.x.
4441         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4442             add_cflags -Qansi-alias
4443         # icl will pass the inline asm tests but inline asm is currently
4444         # not supported (build will fail)
4445         disable inline_asm
4446     fi
4447 fi
4448
4449 case $as_type in
4450     clang)
4451         add_asflags -Qunused-arguments
4452     ;;
4453 esac
4454
4455 case $ld_type in
4456     clang)
4457         check_ldflags -Qunused-arguments
4458     ;;
4459 esac
4460
4461 case $target_os in
4462     osf1)
4463         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4464     ;;
4465     plan9)
4466         add_cppflags -Dmain=plan9_main
4467     ;;
4468 esac
4469
4470 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4471
4472 check_deps $CONFIG_LIST       \
4473            $CONFIG_EXTRA      \
4474            $HAVE_LIST         \
4475            $ALL_COMPONENTS    \
4476
4477 enabled_all dxva2 CoTaskMemFree &&
4478     prepend avconv_libs $($ldflags_filter "-lole32") &&
4479     enable dxva2_lib
4480
4481 ! enabled_any memalign posix_memalign aligned_malloc &&
4482     enabled $simd_align_16 && enable memalign_hack
4483
4484 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4485
4486 for thread in $THREADS_LIST; do
4487     if enabled $thread; then
4488         test -n "$thread_type" &&
4489             die "ERROR: Only one thread type must be selected." ||
4490             thread_type="$thread"
4491     fi
4492 done
4493
4494 enabled zlib && add_cppflags -DZLIB_CONST
4495
4496 # conditional library dependencies, in linking order
4497 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4498 enabled resample_filter && prepend avfilter_deps "avresample"
4499 enabled scale_filter    && prepend avfilter_deps "swscale"
4500
4501 enabled opus_decoder    && prepend avcodec_deps "avresample"
4502
4503 expand_deps(){
4504     lib_deps=${1}_deps
4505     eval "deps=\$$lib_deps"
4506     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4507     unique $lib_deps
4508 }
4509
4510 map 'expand_deps $v' $LIBRARY_LIST
4511
4512 echo "install prefix            $prefix"
4513 echo "source path               $source_path"
4514 echo "C compiler                $cc"
4515 echo "C library                 $libc_type"
4516 if test "$host_cc" != "$cc"; then
4517     echo "host C compiler           $host_cc"
4518     echo "host C library            $host_libc_type"
4519 fi
4520 echo "ARCH                      $arch ($cpu)"
4521 if test "$build_suffix" != ""; then
4522     echo "build suffix              $build_suffix"
4523 fi
4524 if test "$extra_version" != ""; then
4525     echo "version string suffix     $extra_version"
4526 fi
4527 echo "big-endian                ${bigendian-no}"
4528 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4529 if enabled x86; then
4530     echo "${yasmexe}                      ${yasm-no}"
4531     echo "MMX enabled               ${mmx-no}"
4532     echo "MMXEXT enabled            ${mmxext-no}"
4533     echo "3DNow! enabled            ${amd3dnow-no}"
4534     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4535     echo "SSE enabled               ${sse-no}"
4536     echo "SSSE3 enabled             ${ssse3-no}"
4537     echo "AVX enabled               ${avx-no}"
4538     echo "XOP enabled               ${xop-no}"
4539     echo "FMA3 enabled              ${fma3-no}"
4540     echo "FMA4 enabled              ${fma4-no}"
4541     echo "i686 features enabled     ${i686-no}"
4542     echo "CMOV is fast              ${fast_cmov-no}"
4543     echo "EBX available             ${ebx_available-no}"
4544     echo "EBP available             ${ebp_available-no}"
4545 fi
4546 if enabled aarch64; then
4547     echo "NEON enabled              ${neon-no}"
4548     echo "VFP enabled               ${vfp-no}"
4549 fi
4550 if enabled arm; then
4551     echo "ARMv5TE enabled           ${armv5te-no}"
4552     echo "ARMv6 enabled             ${armv6-no}"
4553     echo "ARMv6T2 enabled           ${armv6t2-no}"
4554     echo "VFP enabled               ${vfp-no}"
4555     echo "NEON enabled              ${neon-no}"
4556 fi
4557 if enabled ppc; then
4558     echo "AltiVec enabled           ${altivec-no}"
4559     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4560     echo "dcbzl available           ${dcbzl-no}"
4561 fi
4562 echo "debug symbols             ${debug-no}"
4563 echo "optimize for size         ${small-no}"
4564 echo "optimizations             ${optimizations-no}"
4565 echo "static                    ${static-no}"
4566 echo "shared                    ${shared-no}"
4567 echo "new filter support        ${avfilter-no}"
4568 echo "network support           ${network-no}"
4569 echo "threading support         ${thread_type-no}"
4570 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4571 echo "SDL support               ${sdl-no}"
4572 test -n "$random_seed" &&
4573     echo "random seed               ${random_seed}"
4574 echo
4575
4576 echo "External libraries:"
4577 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4578 echo
4579
4580 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4581     echo "Enabled ${type}s:"
4582     eval list=\$$(toupper $type)_LIST
4583     print_enabled '_*' $list | print_3_columns
4584     echo
4585 done
4586
4587 license="LGPL version 2.1 or later"
4588 if enabled nonfree; then
4589     license="nonfree and unredistributable"
4590 elif enabled gplv3; then
4591     license="GPL version 3 or later"
4592 elif enabled lgplv3; then
4593     license="LGPL version 3 or later"
4594 elif enabled gpl; then
4595     license="GPL version 2 or later"
4596 fi
4597
4598 echo "License: $license"
4599
4600 echo "Creating config.mak and config.h..."
4601
4602 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4603
4604 config_files="$TMPH config.mak"
4605
4606 cat > config.mak <<EOF
4607 # Automatically generated by configure - do not modify!
4608 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4609 prefix=$prefix
4610 LIBDIR=\$(DESTDIR)$libdir
4611 SHLIBDIR=\$(DESTDIR)$shlibdir
4612 INCDIR=\$(DESTDIR)$incdir
4613 BINDIR=\$(DESTDIR)$bindir
4614 DATADIR=\$(DESTDIR)$datadir
4615 DOCDIR=\$(DESTDIR)$docdir
4616 MANDIR=\$(DESTDIR)$mandir
4617 SRC_PATH=$source_path
4618 CC_IDENT=$cc_ident
4619 ARCH=$arch
4620 INTRINSICS=$intrinsics
4621 CC=$cc
4622 AS=$as
4623 LD=$ld
4624 DEPCC=$dep_cc
4625 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4626 DEPAS=$as
4627 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4628 YASM=$yasmexe
4629 DEPYASM=$yasmexe
4630 AR=$ar
4631 ARFLAGS=$arflags
4632 AR_O=$ar_o
4633 RANLIB=$ranlib
4634 STRIP=$strip
4635 LN_S=$ln_s
4636 CPPFLAGS=$CPPFLAGS
4637 CFLAGS=$CFLAGS
4638 ASFLAGS=$ASFLAGS
4639 AS_C=$AS_C
4640 AS_O=$AS_O
4641 CC_C=$CC_C
4642 CC_E=$CC_E
4643 CC_O=$CC_O
4644 LD_O=$LD_O
4645 LD_LIB=$LD_LIB
4646 LD_PATH=$LD_PATH
4647 DLLTOOL=$dlltool
4648 LDFLAGS=$LDFLAGS
4649 LDEXEFLAGS=$LDEXEFLAGS
4650 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4651 STRIPFLAGS=$STRIPFLAGS
4652 YASMFLAGS=$YASMFLAGS
4653 BUILDSUF=$build_suffix
4654 FULLNAME=$FULLNAME
4655 LIBPREF=$LIBPREF
4656 LIBSUF=$LIBSUF
4657 LIBNAME=$LIBNAME
4658 SLIBPREF=$SLIBPREF
4659 SLIBSUF=$SLIBSUF
4660 EXESUF=$EXESUF
4661 EXTRA_VERSION=$extra_version
4662 CCDEP=$CCDEP
4663 CCDEP_FLAGS=$CCDEP_FLAGS
4664 ASDEP=$ASDEP
4665 ASDEP_FLAGS=$ASDEP_FLAGS
4666 CC_DEPFLAGS=$CC_DEPFLAGS
4667 AS_DEPFLAGS=$AS_DEPFLAGS
4668 HOSTCC=$host_cc
4669 HOSTLD=$host_ld
4670 HOSTCFLAGS=$host_cflags
4671 HOSTCPPFLAGS=$host_cppflags
4672 HOSTEXESUF=$HOSTEXESUF
4673 HOSTLDFLAGS=$host_ldflags
4674 HOSTLIBS=$host_libs
4675 DEPHOSTCC=$host_cc
4676 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4677 HOSTCCDEP=$HOSTCCDEP
4678 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4679 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4680 HOSTCC_C=$HOSTCC_C
4681 HOSTCC_O=$HOSTCC_O
4682 HOSTLD_O=$HOSTLD_O
4683 TARGET_EXEC=$target_exec $target_exec_args
4684 TARGET_PATH=$target_path
4685 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4686 CFLAGS-avplay=$sdl_cflags
4687 ZLIB=$($ldflags_filter -lz)
4688 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4689 EXTRALIBS=$extralibs
4690 COMPAT_OBJS=$compat_objs
4691 EXEOBJS=$exeobjs
4692 INSTALL=install
4693 LIBTARGET=${LIBTARGET}
4694 SLIBNAME=${SLIBNAME}
4695 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4696 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4697 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4698 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4699 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4700 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4701 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4702 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4703 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4704 EOF
4705
4706 get_version(){
4707     lcname=lib${1}
4708     name=$(toupper $lcname)
4709     file=$source_path/$lcname/version.h
4710     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4711     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4712     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4713     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4714     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4715 }
4716
4717 map 'get_version $v' $LIBRARY_LIST
4718
4719 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4720
4721 print_program_libs(){
4722     eval "program_libs=\$${1}_libs"
4723     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4724 }
4725
4726 map 'print_program_libs $v' $PROGRAM_LIST
4727
4728 cat > $TMPH <<EOF
4729 /* Automatically generated by configure - do not modify! */
4730 #ifndef LIBAV_CONFIG_H
4731 #define LIBAV_CONFIG_H
4732 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4733 #define LIBAV_LICENSE "$(c_escape $license)"
4734 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4735 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4736 #define restrict $_restrict
4737 #define EXTERN_PREFIX "${extern_prefix}"
4738 #define EXTERN_ASM ${extern_prefix}
4739 #define SLIBSUF "$SLIBSUF"
4740 EOF
4741
4742 test -n "$malloc_prefix" &&
4743     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4744
4745 if enabled yasm; then
4746     append config_files $TMPASM
4747     printf '' >$TMPASM
4748 fi
4749
4750 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4751
4752 print_config ARCH_   "$config_files" $ARCH_LIST
4753 print_config HAVE_   "$config_files" $HAVE_LIST
4754 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4755                                      $CONFIG_EXTRA      \
4756                                      $ALL_COMPONENTS    \
4757
4758 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4759
4760 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4761 cp_if_changed $TMPH config.h
4762 touch .config
4763
4764 enabled yasm && cp_if_changed $TMPASM config.asm
4765
4766 cat > $TMPH <<EOF
4767 /* Generated by ffconf */
4768 #ifndef AVUTIL_AVCONFIG_H
4769 #define AVUTIL_AVCONFIG_H
4770 EOF
4771
4772 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4773
4774 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4775
4776 cp_if_changed $TMPH libavutil/avconfig.h
4777
4778 test -n "$WARNINGS" && printf "\n$WARNINGS"
4779
4780 # build pkg-config files
4781
4782 lib_version(){
4783     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4784 }
4785
4786 pkgconfig_generate(){
4787     name=$1
4788     shortname=${name#lib}${build_suffix}
4789     comment=$2
4790     version=$3
4791     libs=$4
4792     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4793     requires=${requires%, }
4794     enabled ${name#lib} || return 0
4795     mkdir -p $name
4796     cat <<EOF > $name/$name.pc
4797 prefix=$prefix
4798 exec_prefix=\${prefix}
4799 libdir=$libdir
4800 includedir=$incdir
4801
4802 Name: $name
4803 Description: $comment
4804 Version: $version
4805 Requires: $(enabled shared || echo $requires)
4806 Requires.private: $(enabled shared && echo $requires)
4807 Conflicts:
4808 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4809 Libs.private: $(enabled shared && echo $libs)
4810 Cflags: -I\${includedir}
4811 EOF
4812     cat <<EOF > $name/$name-uninstalled.pc
4813 prefix=
4814 exec_prefix=
4815 libdir=\${pcfiledir}
4816 includedir=${source_path}
4817
4818 Name: $name
4819 Description: $comment
4820 Version: $version
4821 Requires: $requires
4822 Conflicts:
4823 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4824 Cflags: -I\${includedir}
4825 EOF
4826 }
4827
4828 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4829 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4830 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4831 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4832 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4833 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4834 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"