configure: Use the right variables in check_host_cpp
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-dxva2           enable DXVA2 code
137   --enable-vaapi           enable VAAPI code
138   --enable-vda             enable VDA code
139   --enable-vdpau           enable VDPAU code
140
141 Individual component options:
142   --disable-everything     disable all components listed below
143   --disable-encoder=NAME   disable encoder NAME
144   --enable-encoder=NAME    enable encoder NAME
145   --disable-encoders       disable all encoders
146   --disable-decoder=NAME   disable decoder NAME
147   --enable-decoder=NAME    enable decoder NAME
148   --disable-decoders       disable all decoders
149   --disable-hwaccel=NAME   disable hwaccel NAME
150   --enable-hwaccel=NAME    enable hwaccel NAME
151   --disable-hwaccels       disable all hwaccels
152   --disable-muxer=NAME     disable muxer NAME
153   --enable-muxer=NAME      enable muxer NAME
154   --disable-muxers         disable all muxers
155   --disable-demuxer=NAME   disable demuxer NAME
156   --enable-demuxer=NAME    enable demuxer NAME
157   --disable-demuxers       disable all demuxers
158   --enable-parser=NAME     enable parser NAME
159   --disable-parser=NAME    disable parser NAME
160   --disable-parsers        disable all parsers
161   --enable-bsf=NAME        enable bitstream filter NAME
162   --disable-bsf=NAME       disable bitstream filter NAME
163   --disable-bsfs           disable all bitstream filters
164   --enable-protocol=NAME   enable protocol NAME
165   --disable-protocol=NAME  disable protocol NAME
166   --disable-protocols      disable all protocols
167   --enable-indev=NAME      enable input device NAME
168   --disable-indev=NAME     disable input device NAME
169   --disable-indevs         disable input devices
170   --enable-outdev=NAME     enable output device NAME
171   --disable-outdev=NAME    disable output device NAME
172   --disable-outdevs        disable output devices
173   --disable-devices        disable all devices
174   --enable-filter=NAME     enable filter NAME
175   --disable-filter=NAME    disable filter NAME
176   --disable-filters        disable all filters
177
178 External library support:
179   --enable-avisynth        enable reading of AviSynth script files [no]
180   --enable-bzlib           enable bzlib [autodetect]
181   --enable-frei0r          enable frei0r video filtering
182   --enable-gnutls          enable gnutls [no]
183   --enable-libbs2b         enable bs2b DSP library [no]
184   --enable-libcdio         enable audio CD grabbing with libcdio
185   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
186                            and libraw1394 [no]
187   --enable-libfaac         enable AAC encoding via libfaac [no]
188   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
189   --enable-libfreetype     enable libfreetype [no]
190   --enable-libgsm          enable GSM de/encoding via libgsm [no]
191   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
192   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
193   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
194   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
195   --enable-libopencv       enable video filtering via libopencv [no]
196   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
197   --enable-libopus         enable Opus de/encoding via libopus [no]
198   --enable-libpulse        enable Pulseaudio input via libpulse [no]
199   --enable-librtmp         enable RTMP[E] support via librtmp [no]
200   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
201   --enable-libspeex        enable Speex de/encoding via libspeex [no]
202   --enable-libtheora       enable Theora encoding via libtheora [no]
203   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
204   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
205   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
206   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
207   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
208   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
209   --enable-libwebp         enable WebP encoding via libwebp [no]
210   --enable-libx264         enable H.264 encoding via x264 [no]
211   --enable-libx265         enable HEVC encoding via x265 [no]
212   --enable-libxavs         enable AVS encoding via xavs [no]
213   --enable-libxvid         enable Xvid encoding via xvidcore,
214                            native MPEG-4/Xvid encoder exists [no]
215   --enable-openssl         enable openssl [no]
216   --enable-x11grab         enable X11 grabbing [no]
217   --enable-zlib            enable zlib [autodetect]
218
219 Toolchain options:
220   --arch=ARCH              select architecture [$arch]
221   --cpu=CPU                select the minimum required CPU (affects
222                            instruction selection, may crash on older CPUs)
223   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
224   --enable-cross-compile   assume a cross-compiler is used
225   --sysroot=PATH           root of cross-build tree
226   --sysinclude=PATH        location of cross-build system headers
227   --target-os=OS           compiler targets OS [$target_os]
228   --target-exec=CMD        command to run executables on target
229   --target-path=DIR        path to view of build directory on target
230   --target-samples=DIR     path to samples directory on target
231   --toolchain=NAME         set tool defaults according to NAME
232   --nm=NM                  use nm tool
233   --ar=AR                  use archive tool AR [$ar_default]
234   --as=AS                  use assembler AS [$as_default]
235   --cc=CC                  use C compiler CC [$cc_default]
236   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
237   --ld=LD                  use linker LD
238   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
239   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
240   --host-cc=HOSTCC         use host C compiler HOSTCC
241   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
242   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
243   --host-ld=HOSTLD         use host linker HOSTLD
244   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
245   --host-libs=HLIBS        use libs HLIBS when linking for host
246   --host-os=OS             compiler host OS [$target_os]
247   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
248   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
249   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
250   --extra-libs=ELIBS       add ELIBS [$ELIBS]
251   --extra-version=STRING   version string suffix []
252   --optflags=OPTFLAGS      override optimization-related compiler flags
253   --build-suffix=SUFFIX    library name suffix []
254   --enable-pic             build position-independent code
255   --enable-thumb           compile for Thumb instruction set
256   --enable-lto             use link-time optimization
257
258 Advanced options (experts only):
259   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
260   --disable-symver         disable symbol versioning
261   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
262   --disable-safe-bitstream-reader
263                            disable buffer boundary checking in bitreaders
264                            (faster, but may crash)
265   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
266   --enable-sram            allow use of on-chip SRAM
267
268 Optimization options (experts only):
269   --disable-asm            disable all assembly optimizations
270   --disable-altivec        disable AltiVec optimizations
271   --disable-amd3dnow       disable 3DNow! optimizations
272   --disable-amd3dnowext    disable 3DNow! extended optimizations
273   --disable-mmx            disable MMX optimizations
274   --disable-mmxext         disable MMXEXT optimizations
275   --disable-sse            disable SSE optimizations
276   --disable-sse2           disable SSE2 optimizations
277   --disable-sse3           disable SSE3 optimizations
278   --disable-ssse3          disable SSSE3 optimizations
279   --disable-sse4           disable SSE4 optimizations
280   --disable-sse42          disable SSE4.2 optimizations
281   --disable-avx            disable AVX optimizations
282   --disable-xop            disable XOP optimizations
283   --disable-fma3           disable FMA3 optimizations
284   --disable-fma4           disable FMA4 optimizations
285   --disable-avx2           disable AVX2 optimizations
286   --disable-armv5te        disable armv5te optimizations
287   --disable-armv6          disable armv6 optimizations
288   --disable-armv6t2        disable armv6t2 optimizations
289   --disable-vfp            disable VFP optimizations
290   --disable-neon           disable NEON optimizations
291   --disable-inline-asm     disable use of inline assembly
292   --disable-yasm           disable use of nasm/yasm assembly
293
294 Developer options (useful when working on Libav itself):
295   --disable-debug          disable debugging symbols
296   --enable-debug=LEVEL     set the debug level [$debuglevel]
297   --disable-optimizations  disable compiler optimizations
298   --enable-extra-warnings  enable more compiler warnings
299   --samples=PATH           location of test samples for FATE, if not set use
300                            \$LIBAV_SAMPLES at make invocation time.
301   --enable-neon-clobber-test check NEON registers for clobbering (should be
302                            used only for debugging purposes)
303   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
304                            should be used only for debugging purposes)
305   --enable-random          randomly enable/disable components
306   --disable-random
307   --enable-random=LIST     randomly enable/disable specific components or
308   --disable-random=LIST    component groups. LIST is a comma-separated list
309                            of NAME[:PROB] entries where NAME is a component
310                            (group) and PROB the probability associated with
311                            NAME (default 0.5).
312   --random-seed=VALUE      seed value for --enable/disable-random
313
314 NOTE: Object files are built at the place where configure is launched.
315 EOF
316   exit 0
317 }
318
319 quotes='""'
320
321 log(){
322     echo "$@" >> $logfile
323 }
324
325 log_file(){
326     log BEGIN $1
327     pr -n -t $1 >> $logfile
328     log END $1
329 }
330
331 echolog(){
332     log "$@"
333     echo "$@"
334 }
335
336 warn(){
337     log "WARNING: $*"
338     WARNINGS="${WARNINGS}WARNING: $*\n"
339 }
340
341 die(){
342     echolog "$@"
343     cat <<EOF
344
345 If you think configure made a mistake, make sure you are using the latest
346 version from Git.  If the latest version fails, report the problem to the
347 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
348 EOF
349     if disabled logging; then
350         cat <<EOF
351 Rerun configure with logging enabled (do not use --disable-logging), and
352 include the log this produces with your report.
353 EOF
354     else
355         cat <<EOF
356 Include the log file "$logfile" produced by configure as this will help
357 solving the problem.
358 EOF
359     fi
360     exit 1
361 }
362
363 # Avoid locale weirdness, besides we really just want to translate ASCII.
364 toupper(){
365     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
366 }
367
368 tolower(){
369     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
370 }
371
372 c_escape(){
373     echo "$*" | sed 's/["\\]/\\\0/g'
374 }
375
376 sh_quote(){
377     v=$(echo "$1" | sed "s/'/'\\\\''/g")
378     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
379     echo "$v"
380 }
381
382 cleanws(){
383     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
384 }
385
386 filter(){
387     pat=$1
388     shift
389     for v; do
390         eval "case $v in $pat) echo $v ;; esac"
391     done
392 }
393
394 filter_out(){
395     pat=$1
396     shift
397     for v; do
398         eval "case $v in $pat) ;; *) echo $v ;; esac"
399     done
400 }
401
402 map(){
403     m=$1
404     shift
405     for v; do eval $m; done
406 }
407
408 add_suffix(){
409     suffix=$1
410     shift
411     for v; do echo ${v}${suffix}; done
412 }
413
414 set_all(){
415     value=$1
416     shift
417     for var in $*; do
418         eval $var=$value
419     done
420 }
421
422 set_weak(){
423     value=$1
424     shift
425     for var; do
426         eval : \${$var:=$value}
427     done
428 }
429
430 sanitize_var_name(){
431     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
432 }
433
434 set_safe(){
435     var=$1
436     shift
437     eval $(sanitize_var_name "$var")='$*'
438 }
439
440 get_safe(){
441     eval echo \$$(sanitize_var_name "$1")
442 }
443
444 pushvar(){
445     for pvar in $*; do
446         eval level=\${${pvar}_level:=0}
447         eval ${pvar}_${level}="\$$pvar"
448         eval ${pvar}_level=$(($level+1))
449     done
450 }
451
452 popvar(){
453     for pvar in $*; do
454         eval level=\${${pvar}_level:-0}
455         test $level = 0 && continue
456         eval level=$(($level-1))
457         eval $pvar="\${${pvar}_${level}}"
458         eval ${pvar}_level=$level
459         eval unset ${pvar}_${level}
460     done
461 }
462
463 enable(){
464     set_all yes $*
465 }
466
467 disable(){
468     set_all no $*
469 }
470
471 enable_weak(){
472     set_weak yes $*
473 }
474
475 disable_weak(){
476     set_weak no $*
477 }
478
479 enable_safe(){
480     for var; do
481         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
482     done
483 }
484
485 disable_safe(){
486     for var; do
487         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
488     done
489 }
490
491 do_enable_deep(){
492     for var; do
493         enabled $var && continue
494         eval sel="\$${var}_select"
495         eval sgs="\$${var}_suggest"
496         pushvar var sgs
497         enable_deep $sel
498         popvar sgs
499         enable_deep_weak $sgs
500         popvar var
501     done
502 }
503
504 enable_deep(){
505     do_enable_deep $*
506     enable $*
507 }
508
509 enable_deep_weak(){
510     for var; do
511         disabled $var && continue
512         pushvar var
513         do_enable_deep $var
514         popvar var
515         enable_weak $var
516     done
517 }
518
519 enabled(){
520     test "${1#!}" = "$1" && op== || op=!=
521     eval test "x\$${1#!}" $op "xyes"
522 }
523
524 disabled(){
525     test "${1#!}" = "$1" && op== || op=!=
526     eval test "x\$${1#!}" $op "xno"
527 }
528
529 enabled_all(){
530     for opt; do
531         enabled $opt || return 1
532     done
533 }
534
535 disabled_all(){
536     for opt; do
537         disabled $opt || return 1
538     done
539 }
540
541 enabled_any(){
542     for opt; do
543         enabled $opt && return 0
544     done
545 }
546
547 disabled_any(){
548     for opt; do
549         disabled $opt && return 0
550     done
551     return 1
552 }
553
554 set_default(){
555     for opt; do
556         eval : \${$opt:=\$${opt}_default}
557     done
558 }
559
560 is_in(){
561     value=$1
562     shift
563     for var in $*; do
564         [ $var = $value ] && return 0
565     done
566     return 1
567 }
568
569 do_check_deps(){
570     for cfg; do
571         cfg="${cfg#!}"
572         enabled ${cfg}_checking && die "Circular dependency for $cfg."
573         disabled ${cfg}_checking && continue
574         enable ${cfg}_checking
575         append allopts $cfg
576
577         eval dep_all="\$${cfg}_deps"
578         eval dep_any="\$${cfg}_deps_any"
579         eval dep_sel="\$${cfg}_select"
580         eval dep_sgs="\$${cfg}_suggest"
581         eval dep_ifa="\$${cfg}_if"
582         eval dep_ifn="\$${cfg}_if_any"
583
584         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
586         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
587
588         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
589         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
590         enabled_all  $dep_all || disable $cfg
591         enabled_any  $dep_any || disable $cfg
592         disabled_any $dep_sel && disable $cfg
593
594         if enabled $cfg; then
595             enable_deep $dep_sel
596             enable_deep_weak $dep_sgs
597         fi
598
599         disable ${cfg}_checking
600     done
601 }
602
603 check_deps(){
604     unset allopts
605
606     do_check_deps "$@"
607
608     for cfg in $allopts; do
609         enabled $cfg || continue
610         eval dep_extralibs="\$${cfg}_extralibs"
611         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
612     done
613 }
614
615 print_config(){
616     pfx=$1
617     files=$2
618     shift 2
619     map 'eval echo "$v \${$v:-no}"' "$@" |
620     awk "BEGIN { split(\"$files\", files) }
621         {
622             c = \"$pfx\" toupper(\$1);
623             v = \$2;
624             sub(/yes/, 1, v);
625             sub(/no/,  0, v);
626             for (f in files) {
627                 file = files[f];
628                 if (file ~ /\\.h\$/) {
629                     printf(\"#define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.asm\$/) {
631                     printf(\"%%define %s %d\\n\", c, v) >>file;
632                 } else if (file ~ /\\.mak\$/) {
633                     n = -v ? \"\" : \"!\";
634                     printf(\"%s%s=yes\\n\", n, c) >>file;
635                 }
636             }
637         }"
638 }
639
640 print_enabled(){
641     suf=$1
642     shift
643     for v; do
644         enabled $v && printf "%s\n" ${v%$suf};
645     done
646 }
647
648 append(){
649     var=$1
650     shift
651     eval "$var=\"\$$var $*\""
652 }
653
654 prepend(){
655     var=$1
656     shift
657     eval "$var=\"$* \$$var\""
658 }
659
660 unique(){
661     var=$1
662     uniq_list=""
663     for tok in $(eval echo \$$var); do
664         uniq_list="$(filter_out $tok $uniq_list) $tok"
665     done
666     eval "$var=\"${uniq_list}\""
667 }
668
669 add_cppflags(){
670     append CPPFLAGS "$@"
671 }
672
673 add_cflags(){
674     append CFLAGS $($cflags_filter "$@")
675 }
676
677 add_asflags(){
678     append ASFLAGS $($asflags_filter "$@")
679 }
680
681 add_ldflags(){
682     append LDFLAGS $($ldflags_filter "$@")
683 }
684
685 add_ldexeflags(){
686     append LDEXEFLAGS $($ldflags_filter "$@")
687 }
688
689 add_stripflags(){
690     append STRIPFLAGS "$@"
691 }
692
693 add_extralibs(){
694     prepend extralibs $($ldflags_filter "$@")
695 }
696
697 add_host_cppflags(){
698     append host_cppflags "$@"
699 }
700
701 add_host_cflags(){
702     append host_cflags $($host_cflags_filter "$@")
703 }
704
705 add_host_ldflags(){
706     append host_ldflags $($host_ldflags_filter "$@")
707 }
708
709 add_compat(){
710     append compat_objs $1
711     shift
712     map 'add_cppflags -D$v' "$@"
713 }
714
715 check_cmd(){
716     log "$@"
717     "$@" >> $logfile 2>&1
718 }
719
720 cc_o(){
721     eval printf '%s\\n' $CC_O
722 }
723
724 cc_e(){
725     eval printf '%s\\n' $CC_E
726 }
727
728 check_cc(){
729     log check_cc "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
733 }
734
735 check_cpp(){
736     log check_cpp "$@"
737     cat > $TMPC
738     log_file $TMPC
739     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
740 }
741
742 as_o(){
743     eval printf '%s\\n' $AS_O
744 }
745
746 check_as(){
747     log check_as "$@"
748     cat > $TMPS
749     log_file $TMPS
750     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
751 }
752
753 check_inline_asm(){
754     log check_inline_asm "$@"
755     name="$1"
756     code="$2"
757     shift 2
758     disable $name
759     check_cc "$@" <<EOF && enable $name
760 void foo(void){ __asm__ volatile($code); }
761 EOF
762 }
763
764 check_insn(){
765     log check_insn "$@"
766     check_inline_asm ${1}_inline "\"$2\""
767     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
768 }
769
770 check_yasm(){
771     log check_yasm "$@"
772     echo "$1" > $TMPS
773     log_file $TMPS
774     shift 1
775     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
776 }
777
778 ld_o(){
779     eval printf '%s\\n' $LD_O
780 }
781
782 check_ld(){
783     log check_ld "$@"
784     flags=$(filter_out '-l*' "$@")
785     libs=$(filter '-l*' "$@")
786     check_cc $($cflags_filter $flags) || return
787     flags=$($ldflags_filter $flags)
788     libs=$($ldflags_filter $libs)
789     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
790 }
791
792 print_include(){
793     hdr=$1
794     test "${hdr%.h}" = "${hdr}" &&
795         echo "#include $hdr"    ||
796         echo "#include <$hdr>"
797 }
798
799 check_code(){
800     log check_code "$@"
801     check=$1
802     headers=$2
803     code=$3
804     shift 3
805     {
806         for hdr in $headers; do
807             print_include $hdr
808         done
809         echo "int main(void) { $code; return 0; }"
810     } | check_$check "$@"
811 }
812
813 check_cppflags(){
814     log check_cppflags "$@"
815     check_cc "$@" <<EOF && append CPPFLAGS "$@"
816 int x;
817 EOF
818 }
819
820 test_cflags(){
821     log test_cflags "$@"
822     set -- $($cflags_filter "$@")
823     check_cc "$@" <<EOF
824 int x;
825 EOF
826 }
827
828 check_cflags(){
829     log check_cflags "$@"
830     test_cflags "$@" && add_cflags "$@"
831 }
832
833 test_ldflags(){
834     log test_ldflags "$@"
835     check_ld "$@" <<EOF
836 int main(void){ return 0; }
837 EOF
838 }
839
840 check_ldflags(){
841     log check_ldflags "$@"
842     test_ldflags "$@" && add_ldflags "$@"
843 }
844
845 test_stripflags(){
846     log test_stripflags "$@"
847     # call check_cc to get a fresh TMPO
848     check_cc <<EOF
849 int main(void) { return 0; }
850 EOF
851     check_cmd $strip $STRIPFLAGS "$@" $TMPO
852 }
853
854 check_stripflags(){
855     log check_stripflags "$@"
856     test_stripflags "$@" && add_stripflags "$@"
857 }
858
859 check_header(){
860     log check_header "$@"
861     header=$1
862     shift
863     disable_safe $header
864     check_cpp "$@" <<EOF && enable_safe $header
865 #include <$header>
866 int x;
867 EOF
868 }
869
870 check_func(){
871     log check_func "$@"
872     func=$1
873     shift
874     disable $func
875     check_ld "$@" <<EOF && enable $func
876 extern int $func();
877 int main(void){ $func(); }
878 EOF
879 }
880
881 check_mathfunc(){
882     log check_mathfunc "$@"
883     func=$1
884     narg=$2
885     shift 2
886     test $narg = 2 && args="f, g" || args="f"
887     disable $func
888     check_ld "$@" <<EOF && enable $func
889 #include <math.h>
890 float foo(float f, float g) { return $func($args); }
891 int main(void){ return 0; }
892 EOF
893 }
894
895 check_func_headers(){
896     log check_func_headers "$@"
897     headers=$1
898     funcs=$2
899     shift 2
900     {
901         for hdr in $headers; do
902             print_include $hdr
903         done
904         for func in $funcs; do
905             echo "long check_$func(void) { return (long) $func; }"
906         done
907         echo "int main(void) { return 0; }"
908     } | check_ld "$@" && enable $funcs && enable_safe $headers
909 }
910
911 check_cpp_condition(){
912     log check_cpp_condition "$@"
913     header=$1
914     condition=$2
915     shift 2
916     check_cpp "$@" <<EOF
917 #include <$header>
918 #if !($condition)
919 #error "unsatisfied condition: $condition"
920 #endif
921 EOF
922 }
923
924 check_lib(){
925     log check_lib "$@"
926     header="$1"
927     func="$2"
928     shift 2
929     check_header $header && check_func $func "$@" && add_extralibs "$@"
930 }
931
932 check_lib2(){
933     log check_lib2 "$@"
934     headers="$1"
935     funcs="$2"
936     shift 2
937     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
938 }
939
940 check_pkg_config(){
941     log check_pkg_config "$@"
942     pkg="$1"
943     headers="$2"
944     funcs="$3"
945     shift 3
946     check_cmd $pkg_config --exists --print-errors $pkg || return
947     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
948     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
949     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
950         set_safe ${pkg}_cflags $pkg_cflags   &&
951         set_safe ${pkg}_libs   $pkg_libs
952 }
953
954 check_exec(){
955     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
956 }
957
958 check_exec_crash(){
959     code=$(cat)
960
961     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
962     # are safe but may not be available everywhere.  Thus we use
963     # raise(SIGTERM) instead.  The check is run in a subshell so we
964     # can redirect the "Terminated" message from the shell.  SIGBUS
965     # is not defined by standard C so it is used conditionally.
966
967     (check_exec "$@") >> $logfile 2>&1 <<EOF
968 #include <signal.h>
969 static void sighandler(int sig){
970     raise(SIGTERM);
971 }
972 int foo(void){
973     $code
974 }
975 int (*func_ptr)(void) = foo;
976 int main(void){
977     signal(SIGILL, sighandler);
978     signal(SIGFPE, sighandler);
979     signal(SIGSEGV, sighandler);
980 #ifdef SIGBUS
981     signal(SIGBUS, sighandler);
982 #endif
983     return func_ptr();
984 }
985 EOF
986 }
987
988 check_type(){
989     log check_type "$@"
990     headers=$1
991     type=$2
992     shift 2
993     disable_safe "$type"
994     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
995 }
996
997 check_struct(){
998     log check_struct "$@"
999     headers=$1
1000     struct=$2
1001     member=$3
1002     shift 3
1003     disable_safe "${struct}_${member}"
1004     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1005         enable_safe "${struct}_${member}"
1006 }
1007
1008 check_builtin(){
1009     log check_builtin "$@"
1010     name=$1
1011     headers=$2
1012     builtin=$3
1013     shift 3
1014     disable "$name"
1015     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1016 }
1017
1018 check_compile_assert(){
1019     log check_compile_assert "$@"
1020     name=$1
1021     headers=$2
1022     condition=$3
1023     shift 3
1024     disable "$name"
1025     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1026 }
1027
1028 require(){
1029     name="$1"
1030     header="$2"
1031     func="$3"
1032     shift 3
1033     check_lib $header $func "$@" || die "ERROR: $name not found"
1034 }
1035
1036 require2(){
1037     name="$1"
1038     headers="$2"
1039     func="$3"
1040     shift 3
1041     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1042 }
1043
1044 require_pkg_config(){
1045     pkg="$1"
1046     check_pkg_config "$@" || die "ERROR: $pkg not found"
1047     add_cflags    $(get_safe ${pkg}_cflags)
1048     add_extralibs $(get_safe ${pkg}_libs)
1049 }
1050
1051 hostcc_e(){
1052     eval printf '%s\\n' $HOSTCC_E
1053 }
1054
1055 hostcc_o(){
1056     eval printf '%s\\n' $HOSTCC_O
1057 }
1058
1059 check_host_cc(){
1060     log check_host_cc "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1064 }
1065
1066 check_host_cpp(){
1067     log check_host_cpp "$@"
1068     cat > $TMPC
1069     log_file $TMPC
1070     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1071 }
1072
1073 check_host_cppflags(){
1074     log check_host_cppflags "$@"
1075     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1076 int x;
1077 EOF
1078 }
1079
1080 check_host_cflags(){
1081     log check_host_cflags "$@"
1082     set -- $($host_cflags_filter "$@")
1083     check_host_cc "$@" <<EOF && append host_cflags "$@"
1084 int x;
1085 EOF
1086 }
1087
1088 check_host_cpp_condition(){
1089     log check_host_cpp_condition "$@"
1090     header=$1
1091     condition=$2
1092     shift 2
1093     check_host_cpp "$@" <<EOF
1094 #include <$header>
1095 #if !($condition)
1096 #error "unsatisfied condition: $condition"
1097 #endif
1098 EOF
1099 }
1100
1101 apply(){
1102     file=$1
1103     shift
1104     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1105 }
1106
1107 cp_if_changed(){
1108     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1109     mkdir -p "$(dirname $2)"
1110     $cp_f "$1" "$2"
1111 }
1112
1113 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1114 # system-dependent things.
1115
1116 COMPONENT_LIST="
1117     bsfs
1118     decoders
1119     demuxers
1120     encoders
1121     filters
1122     hwaccels
1123     indevs
1124     muxers
1125     outdevs
1126     parsers
1127     protocols
1128 "
1129
1130 EXAMPLE_LIST="
1131     avcodec_example
1132     filter_audio_example
1133     metadata_example
1134     output_example
1135     transcode_aac_example
1136 "
1137
1138 EXTERNAL_LIBRARY_LIST="
1139     avisynth
1140     bzlib
1141     frei0r
1142     gnutls
1143     libbs2b
1144     libcdio
1145     libdc1394
1146     libfaac
1147     libfdk_aac
1148     libfontconfig
1149     libfreetype
1150     libgsm
1151     libilbc
1152     libmp3lame
1153     libopencore_amrnb
1154     libopencore_amrwb
1155     libopencv
1156     libopenjpeg
1157     libopus
1158     libpulse
1159     librtmp
1160     libschroedinger
1161     libspeex
1162     libtheora
1163     libtwolame
1164     libvo_aacenc
1165     libvo_amrwbenc
1166     libvorbis
1167     libvpx
1168     libwavpack
1169     libwebp
1170     libx264
1171     libx265
1172     libxavs
1173     libxvid
1174     openssl
1175     x11grab
1176     zlib
1177 "
1178
1179 FEATURE_LIST="
1180     gray
1181     hardcoded_tables
1182     runtime_cpudetect
1183     safe_bitstream_reader
1184     shared
1185     small
1186     sram
1187     static
1188     swscale_alpha
1189 "
1190
1191 HWACCEL_LIST="
1192     dxva2
1193     vaapi
1194     vda
1195     vdpau
1196 "
1197
1198 LIBRARY_LIST="
1199     avcodec
1200     avdevice
1201     avfilter
1202     avformat
1203     avresample
1204     avutil
1205     swscale
1206 "
1207
1208 LICENSE_LIST="
1209     gpl
1210     nonfree
1211     version3
1212 "
1213
1214 PROGRAM_LIST="
1215     avconv
1216     avplay
1217     avprobe
1218 "
1219
1220 SUBSYSTEM_LIST="
1221     dct
1222     doc
1223     error_resilience
1224     faan
1225     fft
1226     lsp
1227     lzo
1228     mdct
1229     network
1230     rdft
1231 "
1232
1233 CONFIG_LIST="
1234     $COMPONENT_LIST
1235     $EXAMPLE_LIST
1236     $EXTERNAL_LIBRARY_LIST
1237     $FEATURE_LIST
1238     $HWACCEL_LIST
1239     $LICENSE_LIST
1240     $LIBRARY_LIST
1241     $PROGRAM_LIST
1242     $SUBSYSTEM_LIST
1243     memalign_hack
1244     neon_clobber_test
1245     pic
1246     pod2man
1247     texi2html
1248     thumb
1249     xmm_clobber_test
1250 "
1251
1252 THREADS_LIST="
1253     pthreads
1254     w32threads
1255 "
1256
1257 ATOMICS_LIST="
1258     atomics_gcc
1259     atomics_suncc
1260     atomics_win32
1261 "
1262
1263 ARCH_LIST="
1264     aarch64
1265     alpha
1266     arm
1267     avr32
1268     avr32_ap
1269     avr32_uc
1270     bfin
1271     ia64
1272     m68k
1273     mips
1274     mips64
1275     parisc
1276     ppc
1277     ppc64
1278     s390
1279     sh4
1280     sparc
1281     sparc64
1282     tilegx
1283     tilepro
1284     tomi
1285     x86
1286     x86_32
1287     x86_64
1288 "
1289
1290 ARCH_EXT_LIST_ARM="
1291     armv5te
1292     armv6
1293     armv6t2
1294     armv8
1295     neon
1296     vfp
1297     vfpv3
1298 "
1299
1300 ARCH_EXT_LIST_X86_SIMD="
1301     amd3dnow
1302     amd3dnowext
1303     avx
1304     avx2
1305     fma3
1306     fma4
1307     mmx
1308     mmxext
1309     sse
1310     sse2
1311     sse3
1312     sse4
1313     sse42
1314     ssse3
1315     xop
1316 "
1317
1318 ARCH_EXT_LIST_PPC="
1319     altivec
1320     dcbzl
1321     ldbrx
1322     ppc4xx
1323 "
1324
1325 ARCH_EXT_LIST_X86="
1326     $ARCH_EXT_LIST_X86_SIMD
1327     cpunop
1328     i686
1329 "
1330
1331 ARCH_EXT_LIST="
1332     $ARCH_EXT_LIST_ARM
1333     $ARCH_EXT_LIST_PPC
1334     $ARCH_EXT_LIST_X86
1335     loongson
1336     vis
1337 "
1338
1339 ARCH_FEATURES="
1340     aligned_stack
1341     fast_64bit
1342     fast_clz
1343     fast_cmov
1344     local_aligned_8
1345     local_aligned_16
1346     simd_align_16
1347 "
1348
1349 BUILTIN_LIST="
1350     atomic_cas_ptr
1351     machine_rw_barrier
1352     MemoryBarrier
1353     mm_empty
1354     rdtsc
1355     sync_val_compare_and_swap
1356 "
1357 HAVE_LIST_CMDLINE="
1358     inline_asm
1359     symver
1360     yasm
1361 "
1362
1363 HAVE_LIST_PUB="
1364     bigendian
1365     fast_unaligned
1366 "
1367
1368 HEADERS_LIST="
1369     alsa_asoundlib_h
1370     altivec_h
1371     arpa_inet_h
1372     cdio_paranoia_h
1373     cdio_paranoia_paranoia_h
1374     dev_bktr_ioctl_bt848_h
1375     dev_bktr_ioctl_meteor_h
1376     dev_ic_bt8xx_h
1377     dev_video_bktr_ioctl_bt848_h
1378     dev_video_meteor_ioctl_meteor_h
1379     direct_h
1380     dlfcn_h
1381     dxva_h
1382     gsm_h
1383     io_h
1384     mach_mach_time_h
1385     machine_ioctl_bt848_h
1386     machine_ioctl_meteor_h
1387     malloc_h
1388     poll_h
1389     sndio_h
1390     soundcard_h
1391     sys_mman_h
1392     sys_param_h
1393     sys_resource_h
1394     sys_select_h
1395     sys_soundcard_h
1396     sys_time_h
1397     sys_un_h
1398     sys_videoio_h
1399     unistd_h
1400     windows_h
1401     winsock2_h
1402 "
1403
1404 INTRINSICS_LIST="
1405     intrinsics_neon
1406 "
1407
1408 MATH_FUNCS="
1409     atanf
1410     atan2f
1411     cbrtf
1412     cosf
1413     exp2
1414     exp2f
1415     expf
1416     isinf
1417     isnan
1418     ldexpf
1419     llrint
1420     llrintf
1421     log2
1422     log2f
1423     log10f
1424     lrint
1425     lrintf
1426     powf
1427     rint
1428     round
1429     roundf
1430     sinf
1431     trunc
1432     truncf
1433 "
1434
1435 SYSTEM_FUNCS="
1436     aligned_malloc
1437     clock_gettime
1438     closesocket
1439     CommandLineToArgvW
1440     CoTaskMemFree
1441     CryptGenRandom
1442     dlopen
1443     fcntl
1444     flt_lim
1445     fork
1446     getaddrinfo
1447     gethrtime
1448     getopt
1449     GetProcessAffinityMask
1450     GetProcessMemoryInfo
1451     GetProcessTimes
1452     getrusage
1453     getservbyport
1454     GetSystemTimeAsFileTime
1455     gettimeofday
1456     inet_aton
1457     isatty
1458     jack_port_get_latency_range
1459     localtime_r
1460     mach_absolute_time
1461     MapViewOfFile
1462     memalign
1463     mkstemp
1464     mmap
1465     mprotect
1466     nanosleep
1467     posix_memalign
1468     sched_getaffinity
1469     SetConsoleTextAttribute
1470     setmode
1471     setrlimit
1472     Sleep
1473     strerror_r
1474     strptime
1475     sysconf
1476     sysctl
1477     usleep
1478     VirtualAlloc
1479 "
1480
1481 TOOLCHAIN_FEATURES="
1482     as_dn_directive
1483     as_func
1484     asm_mod_q
1485     attribute_may_alias
1486     attribute_packed
1487     ebp_available
1488     ebx_available
1489     gnu_as
1490     ibm_asm
1491     inline_asm_labels
1492     pragma_deprecated
1493     symver_asm_label
1494     symver_gnu_asm
1495     vfp_args
1496     xform_asm
1497     xmm_clobbers
1498 "
1499
1500 TYPES_LIST="
1501     socklen_t
1502     struct_addrinfo
1503     struct_group_source_req
1504     struct_ip_mreq_source
1505     struct_ipv6_mreq
1506     struct_pollfd
1507     struct_rusage_ru_maxrss
1508     struct_sockaddr_in6
1509     struct_sockaddr_sa_len
1510     struct_sockaddr_storage
1511     struct_v4l2_frmivalenum_discrete
1512 "
1513
1514 HAVE_LIST="
1515     $ARCH_EXT_LIST
1516     $(add_suffix _external $ARCH_EXT_LIST)
1517     $(add_suffix _inline   $ARCH_EXT_LIST)
1518     $ARCH_FEATURES
1519     $ATOMICS_LIST
1520     $BUILTIN_LIST
1521     $HAVE_LIST_CMDLINE
1522     $HAVE_LIST_PUB
1523     $HEADERS_LIST
1524     $INTRINSICS_LIST
1525     $MATH_FUNCS
1526     $SYSTEM_FUNCS
1527     $THREADS_LIST
1528     $TOOLCHAIN_FEATURES
1529     $TYPES_LIST
1530     atomics_native
1531     dos_paths
1532     dxva2_lib
1533     libc_msvcrt
1534     libdc1394_1
1535     libdc1394_2
1536     sdl
1537     threads
1538     vdpau_x11
1539     xlib
1540 "
1541
1542 # options emitted with CONFIG_ prefix but not available on the command line
1543 CONFIG_EXTRA="
1544     aandcttables
1545     ac3dsp
1546     audio_frame_queue
1547     audiodsp
1548     blockdsp
1549     bswapdsp
1550     cabac
1551     dvprofile
1552     faandct
1553     faanidct
1554     fdctdsp
1555     gcrypt
1556     golomb
1557     gplv3
1558     h263dsp
1559     h264chroma
1560     h264dsp
1561     h264pred
1562     h264qpel
1563     hpeldsp
1564     huffman
1565     huffyuvdsp
1566     huffyuvencdsp
1567     idctdsp
1568     iirfilter
1569     intrax8
1570     lgplv3
1571     lpc
1572     me_cmp
1573     mpeg_er
1574     mpegaudio
1575     mpegaudiodsp
1576     mpegvideo
1577     mpegvideoenc
1578     nettle
1579     pixblockdsp
1580     qpeldsp
1581     rangecoder
1582     riffdec
1583     riffenc
1584     rtpdec
1585     rtpenc_chain
1586     sinewin
1587     startcode
1588     tpeldsp
1589     videodsp
1590     vp3dsp
1591     wma_freqs
1592 "
1593
1594 CMDLINE_SELECT="
1595     $ARCH_EXT_LIST
1596     $CONFIG_LIST
1597     $HAVE_LIST_CMDLINE
1598     $THREADS_LIST
1599     asm
1600     cross_compile
1601     debug
1602     extra_warnings
1603     logging
1604     lto
1605     optimizations
1606     rpath
1607 "
1608
1609 PATHS_LIST="
1610     bindir
1611     datadir
1612     docdir
1613     incdir
1614     libdir
1615     mandir
1616     prefix
1617     shlibdir
1618 "
1619
1620 CMDLINE_SET="
1621     $PATHS_LIST
1622     ar
1623     arch
1624     as
1625     build_suffix
1626     cc
1627     cpu
1628     cross_prefix
1629     dep_cc
1630     extra_version
1631     host_cc
1632     host_cflags
1633     host_ld
1634     host_ldflags
1635     host_libs
1636     host_os
1637     ld
1638     logfile
1639     malloc_prefix
1640     nm
1641     optflags
1642     pkg_config
1643     pkg_config_flags
1644     random_seed
1645     samples
1646     sysinclude
1647     sysroot
1648     target_exec
1649     target_os
1650     target_path
1651     target_samples
1652     toolchain
1653 "
1654
1655 CMDLINE_APPEND="
1656     extra_cflags
1657     host_cppflags
1658 "
1659
1660 # code dependency declarations
1661
1662 # architecture extensions
1663
1664 armv5te_deps="arm"
1665 armv6_deps="arm"
1666 armv6t2_deps="arm"
1667 armv8_deps="aarch64"
1668 neon_deps_any="aarch64 arm"
1669 intrinsics_neon_deps="neon"
1670 vfp_deps_any="aarch64 arm"
1671 vfpv3_deps="vfp"
1672
1673 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1674
1675 altivec_deps="ppc"
1676 ppc4xx_deps="ppc"
1677
1678 cpunop_deps="i686"
1679 x86_64_select="i686"
1680 x86_64_suggest="fast_cmov"
1681
1682 amd3dnow_deps="mmx"
1683 amd3dnowext_deps="amd3dnow"
1684 i686_deps="x86"
1685 mmx_deps="x86"
1686 mmxext_deps="mmx"
1687 sse_deps="mmxext"
1688 sse2_deps="sse"
1689 sse3_deps="sse2"
1690 ssse3_deps="sse3"
1691 sse4_deps="ssse3"
1692 sse42_deps="sse4"
1693 avx_deps="sse42"
1694 xop_deps="avx"
1695 fma3_deps="avx"
1696 fma4_deps="avx"
1697 avx2_deps="avx"
1698
1699 mmx_external_deps="yasm"
1700 mmx_inline_deps="inline_asm"
1701 mmx_suggest="mmx_external mmx_inline"
1702
1703 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1704     eval dep=\$${ext}_deps
1705     eval ${ext}_external_deps='"${dep}_external"'
1706     eval ${ext}_inline_deps='"${dep}_inline"'
1707     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1708 done
1709
1710 aligned_stack_if_any="aarch64 ppc x86"
1711 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1712 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1713 fast_unaligned_if_any="aarch64 ppc x86"
1714 simd_align_16_if_any="altivec neon sse"
1715
1716 # system capabilities
1717 log2_deps="!libc_msvcrt"
1718
1719 symver_if_any="symver_asm_label symver_gnu_asm"
1720
1721 # threading support
1722 atomics_gcc_if="sync_val_compare_and_swap"
1723 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1724 atomics_win32_if="MemoryBarrier"
1725 atomics_native_if_any="$ATOMICS_LIST"
1726 w32threads_deps="atomics_native"
1727 threads_if_any="$THREADS_LIST"
1728
1729 # subsystems
1730 dct_select="rdft"
1731 error_resilience_select="me_cmp"
1732 faandct_deps="faan fdctdsp"
1733 faanidct_deps="faan idctdsp"
1734 intrax8_select="error_resilience"
1735 mdct_select="fft"
1736 rdft_select="fft"
1737 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1738 mpeg_er_select="error_resilience"
1739 mpegaudio_select="mpegaudiodsp"
1740 mpegaudiodsp_select="dct"
1741 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1742 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1743
1744 # decoders / encoders
1745 aac_decoder_select="mdct sinewin"
1746 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1747 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1748 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1749 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1750 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1751 aic_decoder_select="golomb idctdsp"
1752 alac_encoder_select="lpc"
1753 als_decoder_select="bswapdsp"
1754 amrnb_decoder_select="lsp"
1755 amrwb_decoder_select="lsp"
1756 amv_decoder_select="sp5x_decoder"
1757 ape_decoder_select="bswapdsp"
1758 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1759 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1760 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1761 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1762 atrac1_decoder_select="mdct sinewin"
1763 atrac3_decoder_select="mdct"
1764 atrac3p_decoder_select="mdct sinewin"
1765 bink_decoder_select="blockdsp hpeldsp"
1766 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1767 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1768 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1769 cllc_decoder_select="bswapdsp"
1770 comfortnoise_encoder_select="lpc"
1771 cook_decoder_select="audiodsp mdct sinewin"
1772 cscd_decoder_select="lzo"
1773 cscd_decoder_suggest="zlib"
1774 dca_decoder_select="mdct"
1775 dnxhd_decoder_select="blockdsp idctdsp"
1776 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1777 dvvideo_decoder_select="dvprofile idctdsp"
1778 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1779 dxa_decoder_deps="zlib"
1780 eac3_decoder_select="ac3_decoder"
1781 eac3_encoder_select="ac3_encoder"
1782 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1783 eatgq_decoder_select="aandcttables idctdsp"
1784 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1785 exr_decoder_deps="zlib"
1786 ffv1_decoder_select="golomb rangecoder"
1787 ffv1_encoder_select="rangecoder"
1788 ffvhuff_decoder_select="huffyuv_decoder"
1789 ffvhuff_encoder_select="huffyuv_encoder"
1790 fic_decoder_select="golomb"
1791 flac_decoder_select="golomb"
1792 flac_encoder_select="bswapdsp golomb lpc"
1793 flashsv_decoder_deps="zlib"
1794 flashsv_encoder_deps="zlib"
1795 flashsv2_decoder_deps="zlib"
1796 flv_decoder_select="h263_decoder"
1797 flv_encoder_select="h263_encoder"
1798 fourxm_decoder_select="blockdsp bswapdsp"
1799 fraps_decoder_select="bswapdsp huffman"
1800 g2m_decoder_deps="zlib"
1801 g2m_decoder_select="blockdsp idctdsp"
1802 h261_decoder_select="mpeg_er mpegvideo"
1803 h261_encoder_select="aandcttables mpegvideoenc"
1804 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1805 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1806 h263i_decoder_select="h263_decoder"
1807 h263p_encoder_select="h263_encoder"
1808 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1809 h264_decoder_suggest="error_resilience"
1810 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1811 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1812 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1813 iac_decoder_select="imc_decoder"
1814 imc_decoder_select="bswapdsp fft mdct sinewin"
1815 indeo3_decoder_select="hpeldsp"
1816 interplay_video_decoder_select="hpeldsp"
1817 jpegls_decoder_select="golomb mjpeg_decoder"
1818 jpegls_encoder_select="golomb"
1819 jv_decoder_select="blockdsp"
1820 lagarith_decoder_select="huffyuvdsp"
1821 ljpeg_encoder_select="aandcttables idctdsp"
1822 loco_decoder_select="golomb"
1823 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1824 metasound_decoder_select="lsp mdct sinewin"
1825 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1826 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1827 mjpeg_encoder_select="aandcttables mpegvideoenc"
1828 mjpegb_decoder_select="mjpeg_decoder"
1829 mlp_decoder_select="mlp_parser"
1830 motionpixels_decoder_select="bswapdsp"
1831 mp1_decoder_select="mpegaudio"
1832 mp1float_decoder_select="mpegaudio"
1833 mp2_decoder_select="mpegaudio"
1834 mp2float_decoder_select="mpegaudio"
1835 mp3_decoder_select="mpegaudio"
1836 mp3adu_decoder_select="mpegaudio"
1837 mp3adufloat_decoder_select="mpegaudio"
1838 mp3float_decoder_select="mpegaudio"
1839 mp3on4_decoder_select="mpegaudio"
1840 mp3on4float_decoder_select="mpegaudio"
1841 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1842 mpc8_decoder_select="mpegaudiodsp"
1843 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1844 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1845 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1846 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1847 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1848 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1849 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1850 mpeg4_encoder_select="h263_encoder"
1851 msmpeg4v1_decoder_select="h263_decoder"
1852 msmpeg4v2_decoder_select="h263_decoder"
1853 msmpeg4v2_encoder_select="h263_encoder"
1854 msmpeg4v3_decoder_select="h263_decoder"
1855 msmpeg4v3_encoder_select="h263_encoder"
1856 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1857 mxpeg_decoder_select="mjpeg_decoder"
1858 nellymoser_decoder_select="mdct sinewin"
1859 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1860 nuv_decoder_select="idctdsp lzo"
1861 on2avc_decoder_select="mdct"
1862 opus_decoder_deps="avresample"
1863 png_decoder_deps="zlib"
1864 png_encoder_deps="zlib"
1865 png_encoder_select="huffyuvencdsp"
1866 prores_decoder_select="idctdsp"
1867 prores_encoder_select="fdctdsp"
1868 qcelp_decoder_select="lsp"
1869 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1870 ra_144_encoder_select="audio_frame_queue lpc"
1871 ralf_decoder_select="golomb"
1872 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1873 rv10_encoder_select="h263_encoder"
1874 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1875 rv20_encoder_select="h263_encoder"
1876 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1877 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1878 shorten_decoder_select="golomb"
1879 sipr_decoder_select="lsp"
1880 sp5x_decoder_select="mjpeg_decoder"
1881 svq1_decoder_select="hpeldsp"
1882 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1883 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1884 svq3_decoder_suggest="zlib"
1885 tak_decoder_select="audiodsp"
1886 theora_decoder_select="vp3_decoder"
1887 thp_decoder_select="mjpeg_decoder"
1888 tiff_decoder_suggest="zlib"
1889 tiff_encoder_suggest="zlib"
1890 truehd_decoder_select="mlp_decoder"
1891 truemotion2_decoder_select="bswapdsp"
1892 truespeech_decoder_select="bswapdsp"
1893 tscc_decoder_deps="zlib"
1894 twinvq_decoder_select="mdct lsp sinewin"
1895 utvideo_decoder_select="bswapdsp"
1896 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1897 vble_decoder_select="huffyuvdsp"
1898 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1899 vc1image_decoder_select="vc1_decoder"
1900 vorbis_decoder_select="mdct"
1901 vorbis_encoder_select="mdct"
1902 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1903 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1904 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1905 vp6a_decoder_select="vp6_decoder"
1906 vp6f_decoder_select="vp6_decoder"
1907 vp7_decoder_select="h264pred videodsp"
1908 vp8_decoder_select="h264pred videodsp"
1909 vp9_decoder_select="videodsp"
1910 webp_decoder_select="vp8_decoder"
1911 wmapro_decoder_select="mdct sinewin wma_freqs"
1912 wmav1_decoder_select="mdct sinewin wma_freqs"
1913 wmav1_encoder_select="mdct sinewin wma_freqs"
1914 wmav2_decoder_select="mdct sinewin wma_freqs"
1915 wmav2_encoder_select="mdct sinewin wma_freqs"
1916 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1917 wmv1_decoder_select="h263_decoder"
1918 wmv1_encoder_select="h263_encoder"
1919 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1920 wmv2_encoder_select="h263_encoder"
1921 wmv3_decoder_select="vc1_decoder"
1922 wmv3image_decoder_select="wmv3_decoder"
1923 zerocodec_decoder_deps="zlib"
1924 zlib_decoder_deps="zlib"
1925 zlib_encoder_deps="zlib"
1926 zmbv_decoder_deps="zlib"
1927 zmbv_encoder_deps="zlib"
1928
1929 # hardware accelerators
1930 dxva2_deps="dxva2api_h"
1931 vaapi_deps="va_va_h"
1932 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1933 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1934 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1935
1936 h263_vaapi_hwaccel_deps="vaapi"
1937 h263_vaapi_hwaccel_select="h263_decoder"
1938 h263_vdpau_hwaccel_deps="vdpau"
1939 h263_vdpau_hwaccel_select="h263_decoder"
1940 h264_dxva2_hwaccel_deps="dxva2"
1941 h264_dxva2_hwaccel_select="h264_decoder"
1942 h264_vaapi_hwaccel_deps="vaapi"
1943 h264_vaapi_hwaccel_select="h264_decoder"
1944 h264_vda_hwaccel_deps="vda"
1945 h264_vda_hwaccel_select="h264_decoder"
1946 h264_vda_old_hwaccel_deps="vda"
1947 h264_vda_old_hwaccel_select="h264_decoder"
1948 h264_vdpau_hwaccel_deps="vdpau"
1949 h264_vdpau_hwaccel_select="h264_decoder"
1950 mpeg1_vdpau_hwaccel_deps="vdpau"
1951 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1952 mpeg2_dxva2_hwaccel_deps="dxva2"
1953 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1954 mpeg2_vaapi_hwaccel_deps="vaapi"
1955 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1956 mpeg2_vdpau_hwaccel_deps="vdpau"
1957 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1958 mpeg4_vaapi_hwaccel_deps="vaapi"
1959 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1960 mpeg4_vdpau_hwaccel_deps="vdpau"
1961 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1962 vc1_dxva2_hwaccel_deps="dxva2"
1963 vc1_dxva2_hwaccel_select="vc1_decoder"
1964 vc1_vaapi_hwaccel_deps="vaapi"
1965 vc1_vaapi_hwaccel_select="vc1_decoder"
1966 vc1_vdpau_hwaccel_deps="vdpau"
1967 vc1_vdpau_hwaccel_select="vc1_decoder"
1968 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1969 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1970 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1971
1972 # parsers
1973 h264_parser_select="h264_decoder"
1974 mpegvideo_parser_select="mpegvideo"
1975 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1976 vc1_parser_select="mpegvideo startcode"
1977
1978 # external libraries
1979 libfaac_encoder_deps="libfaac"
1980 libfaac_encoder_select="audio_frame_queue"
1981 libfdk_aac_decoder_deps="libfdk_aac"
1982 libfdk_aac_encoder_deps="libfdk_aac"
1983 libfdk_aac_encoder_select="audio_frame_queue"
1984 libgsm_decoder_deps="libgsm"
1985 libgsm_encoder_deps="libgsm"
1986 libgsm_ms_decoder_deps="libgsm"
1987 libgsm_ms_encoder_deps="libgsm"
1988 libilbc_decoder_deps="libilbc"
1989 libilbc_encoder_deps="libilbc"
1990 libmp3lame_encoder_deps="libmp3lame"
1991 libmp3lame_encoder_select="audio_frame_queue"
1992 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1993 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1994 libopencore_amrnb_encoder_select="audio_frame_queue"
1995 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1996 libopenjpeg_decoder_deps="libopenjpeg"
1997 libopenjpeg_encoder_deps="libopenjpeg"
1998 libopus_decoder_deps="libopus"
1999 libopus_encoder_deps="libopus"
2000 libopus_encoder_select="audio_frame_queue"
2001 libschroedinger_decoder_deps="libschroedinger"
2002 libschroedinger_encoder_deps="libschroedinger"
2003 libspeex_decoder_deps="libspeex"
2004 libspeex_encoder_deps="libspeex"
2005 libspeex_encoder_select="audio_frame_queue"
2006 libtheora_encoder_deps="libtheora"
2007 libtwolame_encoder_deps="libtwolame"
2008 libvo_aacenc_encoder_deps="libvo_aacenc"
2009 libvo_aacenc_encoder_select="audio_frame_queue"
2010 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2011 libvorbis_encoder_deps="libvorbis"
2012 libvorbis_encoder_select="audio_frame_queue"
2013 libvpx_vp8_decoder_deps="libvpx"
2014 libvpx_vp8_encoder_deps="libvpx"
2015 libvpx_vp9_decoder_deps="libvpx"
2016 libvpx_vp9_encoder_deps="libvpx"
2017 libwavpack_encoder_deps="libwavpack"
2018 libwebp_encoder_deps="libwebp"
2019 libx264_encoder_deps="libx264"
2020 libx265_encoder_deps="libx265"
2021 libxavs_encoder_deps="libxavs"
2022 libxvid_encoder_deps="libxvid"
2023
2024 # demuxers / muxers
2025 ac3_demuxer_select="ac3_parser"
2026 asf_demuxer_select="riffdec"
2027 asf_muxer_select="riffenc"
2028 asf_stream_muxer_select="asf_muxer"
2029 avi_demuxer_select="riffdec"
2030 avi_muxer_select="riffenc"
2031 avisynth_demuxer_deps="avisynth"
2032 avisynth_demuxer_select="riffdec"
2033 caf_demuxer_select="riffdec"
2034 dirac_demuxer_select="dirac_parser"
2035 dv_demuxer_select="dvprofile"
2036 dv_muxer_select="dvprofile"
2037 dxa_demuxer_select="riffdec"
2038 eac3_demuxer_select="ac3_parser"
2039 f4v_muxer_select="mov_muxer"
2040 flac_demuxer_select="flac_parser"
2041 hds_muxer_select="flv_muxer"
2042 hls_muxer_select="mpegts_muxer"
2043 ipod_muxer_select="mov_muxer"
2044 ismv_muxer_select="mov_muxer"
2045 matroska_audio_muxer_select="matroska_muxer"
2046 matroska_demuxer_select="riffdec"
2047 matroska_demuxer_suggest="bzlib lzo zlib"
2048 matroska_muxer_select="riffenc"
2049 mmf_muxer_select="riffenc"
2050 mov_demuxer_select="riffdec"
2051 mov_demuxer_suggest="zlib"
2052 mov_muxer_select="riffenc rtpenc_chain"
2053 mp3_demuxer_select="mpegaudio_parser"
2054 mp4_muxer_select="mov_muxer"
2055 mpegts_muxer_select="adts_muxer latm_muxer"
2056 mpegtsraw_demuxer_select="mpegts_demuxer"
2057 mxf_d10_muxer_select="mxf_muxer"
2058 nut_muxer_select="riffenc"
2059 nuv_demuxer_select="riffdec"
2060 oga_muxer_select="ogg_muxer"
2061 ogg_demuxer_select="golomb"
2062 opus_muxer_select="ogg_muxer"
2063 psp_muxer_select="mov_muxer"
2064 rtp_demuxer_select="sdp_demuxer"
2065 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2066 rtsp_demuxer_select="http_protocol rtpdec"
2067 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2068 sap_demuxer_select="sdp_demuxer"
2069 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2070 sdp_demuxer_select="rtpdec"
2071 smoothstreaming_muxer_select="ismv_muxer"
2072 spdif_muxer_select="aac_parser"
2073 spx_muxer_select="ogg_muxer"
2074 tak_demuxer_select="tak_parser"
2075 tg2_muxer_select="mov_muxer"
2076 tgp_muxer_select="mov_muxer"
2077 w64_demuxer_select="wav_demuxer"
2078 wav_demuxer_select="riffdec"
2079 wav_muxer_select="riffenc"
2080 webm_muxer_select="riffenc"
2081 wtv_demuxer_select="riffdec"
2082 xmv_demuxer_select="riffdec"
2083 xwma_demuxer_select="riffdec"
2084
2085 # indevs / outdevs
2086 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2087 alsa_outdev_deps="alsa_asoundlib_h"
2088 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2089 dv1394_indev_deps="dv1394"
2090 dv1394_indev_select="dv_demuxer"
2091 fbdev_indev_deps="linux_fb_h"
2092 jack_indev_deps="jack_jack_h pthreads"
2093 libcdio_indev_deps="libcdio"
2094 libdc1394_indev_deps="libdc1394"
2095 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2096 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2097 pulse_indev_deps="libpulse"
2098 sndio_indev_deps="sndio_h"
2099 sndio_outdev_deps="sndio_h"
2100 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2101 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2102 vfwcap_indev_extralibs="-lavicap32"
2103 x11grab_indev_deps="x11grab XShmCreateImage"
2104
2105 # protocols
2106 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2107 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2108 ffrtmpcrypt_protocol_select="tcp_protocol"
2109 ffrtmphttp_protocol_deps="!librtmp_protocol"
2110 ffrtmphttp_protocol_select="http_protocol"
2111 gopher_protocol_select="network"
2112 http_protocol_select="tcp_protocol"
2113 httpproxy_protocol_select="tcp_protocol"
2114 https_protocol_select="tls_protocol"
2115 icecast_protocol_select="http_protocol"
2116 librtmp_protocol_deps="librtmp"
2117 librtmpe_protocol_deps="librtmp"
2118 librtmps_protocol_deps="librtmp"
2119 librtmpt_protocol_deps="librtmp"
2120 librtmpte_protocol_deps="librtmp"
2121 mmsh_protocol_select="http_protocol"
2122 mmst_protocol_select="network"
2123 rtmp_protocol_deps="!librtmp_protocol"
2124 rtmp_protocol_select="tcp_protocol"
2125 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2126 rtmps_protocol_deps="!librtmp_protocol"
2127 rtmps_protocol_select="tls_protocol"
2128 rtmpt_protocol_select="ffrtmphttp_protocol"
2129 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2130 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2131 rtp_protocol_select="udp_protocol"
2132 sctp_protocol_deps="struct_sctp_event_subscribe"
2133 sctp_protocol_select="network"
2134 srtp_protocol_select="rtp_protocol"
2135 tcp_protocol_select="network"
2136 tls_protocol_deps_any="openssl gnutls"
2137 tls_protocol_select="tcp_protocol"
2138 udp_protocol_select="network"
2139 unix_protocol_deps="sys_un_h"
2140 unix_protocol_select="network"
2141
2142 # filters
2143 blackframe_filter_deps="gpl"
2144 boxblur_filter_deps="gpl"
2145 bs2b_filter_deps="libbs2b"
2146 cropdetect_filter_deps="gpl"
2147 delogo_filter_deps="gpl"
2148 drawtext_filter_deps="libfreetype"
2149 frei0r_filter_deps="frei0r dlopen"
2150 frei0r_filter_extralibs='$ldl'
2151 frei0r_src_filter_deps="frei0r dlopen"
2152 frei0r_src_filter_extralibs='$ldl'
2153 hqdn3d_filter_deps="gpl"
2154 interlace_filter_deps="gpl"
2155 ocv_filter_deps="libopencv"
2156 resample_filter_deps="avresample"
2157 scale_filter_deps="swscale"
2158
2159 # examples
2160 avcodec_example_deps="avcodec avutil"
2161 filter_audio_example_deps="avfilter avutil"
2162 metadata_example_deps="avformat avutil"
2163 output_example_deps="avcodec avformat avutil swscale"
2164 transcode_aac_example_deps="avcodec avformat avresample"
2165
2166 # libraries, in linking order
2167 avcodec_deps="avutil"
2168 avdevice_deps="avformat avcodec avutil"
2169 avfilter_deps="avutil"
2170 avformat_deps="avcodec avutil"
2171 avresample_deps="avutil"
2172 swscale_deps="avutil"
2173
2174 # programs
2175 avconv_deps="avcodec avfilter avformat avresample swscale"
2176 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2177                fps_filter null_filter resample_filter scale_filter
2178                setpts_filter trim_filter"
2179 avplay_deps="avcodec avformat avresample swscale sdl"
2180 avplay_libs='$sdl_libs'
2181 avplay_select="rdft"
2182 avprobe_deps="avcodec avformat"
2183
2184 # documentation
2185 pod2man_deps="doc"
2186 texi2html_deps="doc"
2187
2188 # default parameters
2189
2190 logfile="config.log"
2191
2192 # installation paths
2193 prefix_default="/usr/local"
2194 bindir_default='${prefix}/bin'
2195 datadir_default='${prefix}/share/avconv'
2196 docdir_default='${prefix}/share/doc/libav'
2197 incdir_default='${prefix}/include'
2198 libdir_default='${prefix}/lib'
2199 mandir_default='${prefix}/share/man'
2200 shlibdir_default="$libdir_default"
2201
2202 # toolchain
2203 ar_default="ar"
2204 cc_default="gcc"
2205 host_cc_default="gcc"
2206 cp_f="cp -f"
2207 ln_s="ln -s -f"
2208 nm_default="nm -g"
2209 objformat="elf"
2210 pkg_config_default=pkg-config
2211 ranlib="ranlib"
2212 strip="strip"
2213 yasmexe="yasm"
2214
2215 # machine
2216 arch_default=$(uname -m)
2217 cpu="generic"
2218 intrinsics="none"
2219
2220 # OS
2221 target_os_default=$(tolower $(uname -s))
2222 host_os=$target_os_default
2223
2224 # configurable options
2225 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2226
2227 enable asm
2228 enable debug
2229 enable doc
2230 enable faan faandct faanidct
2231 enable optimizations
2232 enable safe_bitstream_reader
2233 enable static
2234 enable swscale_alpha
2235
2236 # By default, enable only those hwaccels that have no external dependencies.
2237 enable dxva2 vdpau
2238
2239 # build settings
2240 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2241 LIBPREF="lib"
2242 LIBSUF=".a"
2243 FULLNAME='$(NAME)$(BUILDSUF)'
2244 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2245 SLIBPREF="lib"
2246 SLIBSUF=".so"
2247 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2248 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2249 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2250 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2251 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2252 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2253
2254 asflags_filter=echo
2255 cflags_filter=echo
2256 ldflags_filter=echo
2257
2258 AS_C='-c'
2259 AS_O='-o $@'
2260 CC_C='-c'
2261 CC_E='-E -o $@'
2262 CC_O='-o $@'
2263 LD_O='-o $@'
2264 LD_LIB='-l%'
2265 LD_PATH='-L'
2266 HOSTCC_C='-c'
2267 HOSTCC_E='-E -o $@'
2268 HOSTCC_O='-o $@'
2269 HOSTLD_O='-o $@'
2270
2271 host_libs='-lm'
2272 host_cflags_filter=echo
2273 host_ldflags_filter=echo
2274
2275 target_path='$(CURDIR)'
2276
2277 # since the object filename is not given with the -MM flag, the compiler
2278 # is only able to print the basename, and we must add the path ourselves
2279 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2280 DEPFLAGS='-MM'
2281
2282 # find source path
2283 if test -f configure; then
2284     source_path=.
2285 else
2286     source_path=$(cd $(dirname "$0"); pwd)
2287     echo "$source_path" | grep -q '[[:blank:]]' &&
2288         die "Out of tree builds are impossible with whitespace in source path."
2289     test -e "$source_path/config.h" &&
2290         die "Out of tree builds are impossible with config.h in source dir."
2291 fi
2292
2293 for v in "$@"; do
2294     r=${v#*=}
2295     l=${v%"$r"}
2296     r=$(sh_quote "$r")
2297     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2298 done
2299
2300 find_things(){
2301     thing=$1
2302     pattern=$2
2303     file=$source_path/$3
2304     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2305 }
2306
2307 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2308 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2309 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2310 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2311 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2312 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2313 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2314 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2315 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2316 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2317 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2318
2319 ALL_COMPONENTS="
2320     $BSF_LIST
2321     $DECODER_LIST
2322     $DEMUXER_LIST
2323     $ENCODER_LIST
2324     $FILTER_LIST
2325     $HWACCEL_LIST
2326     $INDEV_LIST
2327     $MUXER_LIST
2328     $OUTDEV_LIST
2329     $PARSER_LIST
2330     $PROTOCOL_LIST
2331 "
2332
2333 for n in $COMPONENT_LIST; do
2334     v=$(toupper ${n%s})_LIST
2335     eval enable \$$v
2336     eval ${n}_if_any="\$$v"
2337 done
2338
2339 enable $ARCH_EXT_LIST
2340
2341 die_unknown(){
2342     echo "Unknown option \"$1\"."
2343     echo "See $0 --help for available options."
2344     exit 1
2345 }
2346
2347 print_3_columns() {
2348     cat | tr ' ' '\n' | sort | pr -r -3 -t
2349 }
2350
2351 show_list() {
2352     suffix=_$1
2353     shift
2354     echo $* | sed s/$suffix//g | print_3_columns
2355     exit 0
2356 }
2357
2358 rand_list(){
2359     IFS=', '
2360     set -- $*
2361     unset IFS
2362     for thing; do
2363         comp=${thing%:*}
2364         prob=${thing#$comp}
2365         prob=${prob#:}
2366         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2367         echo "prob ${prob:-0.5}"
2368         printf '%s\n' $comp
2369     done
2370 }
2371
2372 do_random(){
2373     action=$1
2374     shift
2375     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2376     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2377 }
2378
2379 for opt do
2380     optval="${opt#*=}"
2381     case "$opt" in
2382         --extra-ldflags=*)
2383             add_ldflags $optval
2384         ;;
2385         --extra-ldexeflags=*)
2386             add_ldexeflags $optval
2387         ;;
2388         --extra-libs=*)
2389             add_extralibs $optval
2390         ;;
2391         --disable-devices)
2392             disable $INDEV_LIST $OUTDEV_LIST
2393         ;;
2394         --enable-debug=*)
2395             debuglevel="$optval"
2396         ;;
2397         --disable-programs)
2398             disable $PROGRAM_LIST
2399         ;;
2400         --disable-everything)
2401             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2402         ;;
2403         --disable-all)
2404             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2405             disable $LIBRARY_LIST $PROGRAM_LIST doc
2406         ;;
2407         --enable-random|--disable-random)
2408             action=${opt%%-random}
2409             do_random ${action#--} $COMPONENT_LIST
2410         ;;
2411         --enable-random=*|--disable-random=*)
2412             action=${opt%%-random=*}
2413             do_random ${action#--} $optval
2414         ;;
2415         --enable-*=*|--disable-*=*)
2416             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2417             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2418             eval list=\$$(toupper $thing)_LIST
2419             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2420             $action $(filter "$name" $list)
2421         ;;
2422         --enable-avserver|--disable-avserver*)
2423             warn "avserver has been removed, the ${opt} option is only"\
2424                  "provided for compatibility and will be removed in the future"
2425         ;;
2426         --enable-?*|--disable-?*)
2427             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2428             if is_in $option $COMPONENT_LIST; then
2429                 test $action = disable && action=unset
2430                 eval $action \$$(toupper ${option%s})_LIST
2431             elif is_in $option $CMDLINE_SELECT; then
2432                 $action $option
2433             else
2434                 die_unknown $opt
2435             fi
2436         ;;
2437         --list-*)
2438             NAME="${opt#--list-}"
2439             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2440             NAME=${NAME%s}
2441             eval show_list $NAME \$$(toupper $NAME)_LIST
2442         ;;
2443         --help|-h) show_help
2444         ;;
2445         *)
2446             optname="${opt%%=*}"
2447             optname="${optname#--}"
2448             optname=$(echo "$optname" | sed 's/-/_/g')
2449             if is_in $optname $CMDLINE_SET; then
2450                 eval $optname='$optval'
2451             elif is_in $optname $CMDLINE_APPEND; then
2452                 append $optname "$optval"
2453             else
2454                 die_unknown $opt
2455             fi
2456         ;;
2457     esac
2458 done
2459
2460 disabled logging && logfile=/dev/null
2461
2462 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2463 set >> $logfile
2464
2465 test -n "$cross_prefix" && enable cross_compile
2466
2467 if enabled cross_compile; then
2468     test -n "$arch" && test -n "$target_os" ||
2469         die "Must specify target arch and OS when cross-compiling"
2470 fi
2471
2472 ar_default="${cross_prefix}${ar_default}"
2473 cc_default="${cross_prefix}${cc_default}"
2474 nm_default="${cross_prefix}${nm_default}"
2475 pkg_config_default="${cross_prefix}${pkg_config_default}"
2476 ranlib="${cross_prefix}${ranlib}"
2477 strip="${cross_prefix}${strip}"
2478
2479 sysinclude_default="${sysroot}/usr/include"
2480
2481 case "$toolchain" in
2482     clang-asan)
2483         cc_default="clang"
2484         add_cflags  -fsanitize=address
2485         add_ldflags -fsanitize=address
2486     ;;
2487     clang-tsan)
2488         cc_default="clang"
2489         add_cflags  -fsanitize=thread -pie
2490         add_ldflags -fsanitize=thread -pie
2491     ;;
2492     clang-usan)
2493         cc_default="clang"
2494         add_cflags  -fsanitize=undefined -O1
2495         add_ldflags -fsanitize=undefined
2496     ;;
2497     gcc-asan)
2498         cc_default="gcc"
2499         add_cflags  -fsanitize=address
2500         add_ldflags -fsanitize=address
2501     ;;
2502     gcc-tsan)
2503         cc_default="gcc"
2504         add_cflags  -fsanitize=thread -pie -fPIC
2505         add_ldflags -fsanitize=thread -pie -fPIC
2506     ;;
2507     gcc-usan)
2508         cc_default="gcc"
2509         add_cflags  -fsanitize=undefined
2510         add_ldflags -fsanitize=undefined
2511     ;;
2512     valgrind-massif)
2513         target_exec_default="valgrind"
2514         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2515     ;;
2516     valgrind-memcheck)
2517         target_exec_default="valgrind"
2518         target_exec_args="--track-origins=yes --leak-check=full"
2519     ;;
2520     msvc)
2521         # Check whether the current MSVC version needs the C99 converter.
2522         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2523         # support enough of C99 to build libav. Default to the new
2524         # behaviour if the regexp was unable to match anything, since this
2525         # successfully parses the version number of existing supported
2526         # versions that require the converter (MSVC 2010 and 2012).
2527         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2528         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2529             cc_default="cl"
2530         else
2531             cc_default="c99wrap cl"
2532         fi
2533         ld_default="link"
2534         nm_default="dumpbin -symbols"
2535         ar_default="lib"
2536         target_os_default="win32"
2537         # Use a relative path for TMPDIR. This makes sure all the
2538         # ffconf temp files are written with a relative path, avoiding
2539         # issues with msys/win32 path conversion for MSVC parameters
2540         # such as -Fo<file> or -out:<file>.
2541         TMPDIR=.
2542     ;;
2543     icl)
2544         cc_default="icl"
2545         ld_default="xilink"
2546         nm_default="dumpbin -symbols"
2547         ar_default="xilib"
2548         target_os_default="win32"
2549         TMPDIR=.
2550     ;;
2551     gcov)
2552         add_cflags  -fprofile-arcs -ftest-coverage
2553         add_ldflags -fprofile-arcs -ftest-coverage
2554     ;;
2555     hardened)
2556         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2557         add_cflags   -fno-strict-overflow -fstack-protector-all
2558         add_ldflags  -Wl,-z,relro -Wl,-z,now
2559     ;;
2560     ?*)
2561         die "Unknown toolchain $toolchain"
2562     ;;
2563 esac
2564
2565 set_default arch cc pkg_config sysinclude target_exec target_os
2566 enabled cross_compile || host_cc_default=$cc
2567 set_default host_cc
2568
2569 if ! $pkg_config --version >/dev/null 2>&1; then
2570     warn "$pkg_config not found, library detection may fail."
2571     pkg_config=false
2572 fi
2573
2574 exesuf() {
2575     case $1 in
2576         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2577     esac
2578 }
2579
2580 EXESUF=$(exesuf $target_os)
2581 HOSTEXESUF=$(exesuf $host_os)
2582
2583 # set temporary file name
2584 : ${TMPDIR:=$TEMPDIR}
2585 : ${TMPDIR:=$TMP}
2586 : ${TMPDIR:=/tmp}
2587
2588 if ! check_cmd mktemp -u XXXXXX; then
2589     # simple replacement for missing mktemp
2590     # NOT SAFE FOR GENERAL USE
2591     mktemp(){
2592         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2593     }
2594 fi
2595
2596 tmpfile(){
2597     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2598         (set -C; exec > $tmp) 2>/dev/null ||
2599         die "Unable to create temporary file in $TMPDIR."
2600     append TMPFILES $tmp
2601     eval $1=$tmp
2602 }
2603
2604 trap 'rm -f -- $TMPFILES' EXIT
2605
2606 tmpfile TMPASM .asm
2607 tmpfile TMPC   .c
2608 tmpfile TMPE   $EXESUF
2609 tmpfile TMPH   .h
2610 tmpfile TMPO   .o
2611 tmpfile TMPS   .S
2612 tmpfile TMPSH  .sh
2613 tmpfile TMPV   .ver
2614
2615 unset -f mktemp
2616
2617 chmod +x $TMPE
2618
2619 # make sure we can execute files in $TMPDIR
2620 cat > $TMPSH 2>> $logfile <<EOF
2621 #! /bin/sh
2622 EOF
2623 chmod +x $TMPSH >> $logfile 2>&1
2624 if ! $TMPSH >> $logfile 2>&1; then
2625     cat <<EOF
2626 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2627 variable to another directory and make sure that it is not mounted noexec.
2628 EOF
2629     die "Sanity test failed."
2630 fi
2631
2632 armasm_flags(){
2633     for flag; do
2634         case $flag in
2635             # Filter out MSVC cl.exe options from cflags that shouldn't
2636             # be passed to gas-preprocessor
2637             -M[TD]*)                                            ;;
2638             *)                  echo $flag                      ;;
2639         esac
2640    done
2641 }
2642
2643 ccc_flags(){
2644     for flag; do
2645         case $flag in
2646             -std=c99)           echo -c99                       ;;
2647             -mcpu=*)            echo -arch ${flag#*=}           ;;
2648             -mieee)             echo -ieee                      ;;
2649             -O*|-fast)          echo $flag                      ;;
2650             -fno-math-errno)    echo -assume nomath_errno       ;;
2651             -g)                 echo -g3                        ;;
2652             -Wall)              echo -msg_enable level2         ;;
2653             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2654             -Wl,*)              echo $flag                      ;;
2655             -f*|-W*)                                            ;;
2656             *)                  echo $flag                      ;;
2657         esac
2658    done
2659 }
2660
2661 cparser_flags(){
2662     for flag; do
2663         case $flag in
2664             -Wno-switch)             echo -Wno-switch-enum ;;
2665             -Wno-format-zero-length) ;;
2666             -Wdisabled-optimization) ;;
2667             -Wno-pointer-sign)       echo -Wno-other ;;
2668             *)                       echo $flag ;;
2669         esac
2670     done
2671 }
2672
2673 msvc_common_flags(){
2674     for flag; do
2675         case $flag in
2676             # In addition to specifying certain flags under the compiler
2677             # specific filters, they must be specified here as well or else the
2678             # generic catch all at the bottom will print the original flag.
2679             -Wall)                ;;
2680             -std=c99)             ;;
2681             # Common flags
2682             -fomit-frame-pointer) ;;
2683             -g)                   echo -Z7 ;;
2684             -fno-math-errno)      ;;
2685             -fno-common)          ;;
2686             -fno-signed-zeros)    ;;
2687             -fPIC)                ;;
2688             -mthumb)              ;;
2689             -march=*)             ;;
2690             -lz)                  echo zlib.lib ;;
2691             -lavifil32)           echo vfw32.lib ;;
2692             -lavicap32)           echo vfw32.lib user32.lib ;;
2693             -l*)                  echo ${flag#-l}.lib ;;
2694             *)                    echo $flag ;;
2695         esac
2696     done
2697 }
2698
2699 msvc_flags(){
2700     msvc_common_flags "$@"
2701     for flag; do
2702         case $flag in
2703             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2704                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2705                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2706                                        -wd4273 -wd4701 ;;
2707         esac
2708     done
2709 }
2710
2711 icl_flags(){
2712     msvc_common_flags "$@"
2713     for flag; do
2714         case $flag in
2715             # Despite what Intel's documentation says -Wall, which is supported
2716             # on Windows, does enable remarks so disable them here.
2717             -Wall)                echo $flag -Qdiag-disable:remark ;;
2718             -std=c99)             echo -Qstd=c99 ;;
2719         esac
2720     done
2721 }
2722
2723 pgi_flags(){
2724     for flag; do
2725         case $flag in
2726             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2727             -fomit-frame-pointer) echo -Mnoframe ;;
2728             -g)                   echo -gopt ;;
2729             *)                    echo $flag ;;
2730         esac
2731     done
2732 }
2733
2734 suncc_flags(){
2735     for flag; do
2736         case $flag in
2737             -march=*|-mcpu=*)
2738                 case "${flag#*=}" in
2739                     native)                   echo -xtarget=native       ;;
2740                     v9|niagara)               echo -xarch=sparc          ;;
2741                     ultrasparc)               echo -xarch=sparcvis       ;;
2742                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2743                     i586|pentium)             echo -xchip=pentium        ;;
2744                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2745                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2746                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2747                     pentium4*)          echo -xtarget=pentium4           ;;
2748                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2749                     *-sse3)             echo -xarch=sse3                 ;;
2750                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2751                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2752                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2753                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2754                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2755                     k8|opteron|athlon64|athlon-fx)
2756                                                echo -xarch=sse2a         ;;
2757                     athlon*)                   echo -xarch=pentium_proa  ;;
2758                 esac
2759                 ;;
2760             -std=c99)             echo -xc99              ;;
2761             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2762             -fPIC)                echo -KPIC -xcode=pic32 ;;
2763             -W*,*)                echo $flag              ;;
2764             -f*-*|-W*|-mimpure-text)                      ;;
2765             -shared)              echo -G                 ;;
2766             *)                    echo $flag              ;;
2767         esac
2768     done
2769 }
2770
2771 tms470_flags(){
2772     for flag; do
2773         case $flag in
2774             -march=*|-mcpu=*)
2775                 case "${flag#*=}" in
2776                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2777                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2778                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2779                     armv6*|arm11*)          echo -mv=6   ;;
2780                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2781                                             echo -mv=5e  ;;
2782                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2783                 esac
2784                 ;;
2785             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2786             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2787             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2788             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2789             -msoft-float)   echo --float_support=vfplib       ;;
2790             -O[0-3]|-mf=*)  echo $flag                        ;;
2791             -g)             echo -g -mn                       ;;
2792             -pds=*)         echo $flag                        ;;
2793             -D*|-I*)        echo $flag                        ;;
2794             --gcc|--abi=*)  echo $flag                        ;;
2795             -me)            echo $flag                        ;;
2796         esac
2797     done
2798 }
2799
2800 probe_cc(){
2801     pfx=$1
2802     _cc=$2
2803
2804     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2805     unset _ld_o _ldflags _ld_lib _ld_path
2806     unset _depflags _DEPCMD _DEPFLAGS
2807     _flags_filter=echo
2808
2809     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2810         _type=llvm_gcc
2811         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2812         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2813         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2814         _cflags_speed='-O3'
2815         _cflags_size='-Os'
2816     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2817         _type=gcc
2818         gcc_version=$($_cc --version | head -n1)
2819         gcc_basever=$($_cc -dumpversion)
2820         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2821         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2822         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2823         if ! $_cc -dumpversion | grep -q '^2\.'; then
2824             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2825         fi
2826         _cflags_speed='-O3'
2827         _cflags_size='-Os'
2828     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2829         _type=icc
2830         _ident=$($_cc --version | head -n1)
2831         _depflags='-MMD'
2832         _cflags_speed='-O3'
2833         _cflags_size='-Os'
2834         _cflags_noopt='-O1'
2835     elif $_cc -v 2>&1 | grep -q xlc; then
2836         _type=xlc
2837         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2838         _cflags_speed='-O5'
2839         _cflags_size='-O5 -qcompact'
2840     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2841         _type=ccc
2842         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2843         _DEPFLAGS='-M'
2844         _cflags_speed='-fast'
2845         _cflags_size='-O1'
2846         _flags_filter=ccc_flags
2847     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2848         test -d "$sysroot" || die "No valid sysroot specified."
2849         _type=armcc
2850         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2851         armcc_conf="$PWD/armcc.conf"
2852         $_cc --arm_linux_configure                 \
2853              --arm_linux_config_file="$armcc_conf" \
2854              --configure_sysroot="$sysroot"        \
2855              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2856              die "Error creating armcc configuration file."
2857         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2858         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2859         as_default="${cross_prefix}gcc"
2860         _depflags='-MMD'
2861         _cflags_speed='-O3'
2862         _cflags_size='-Os'
2863     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2864         _type=tms470
2865         _ident=$($_cc -version | head -n1 | tr -s ' ')
2866         _flags='--gcc --abi=eabi -me'
2867         _cc_e='-ppl -fe=$@'
2868         _cc_o='-fe=$@'
2869         _depflags='-ppa -ppd=$(@:.o=.d)'
2870         _cflags_speed='-O3 -mf=5'
2871         _cflags_size='-O3 -mf=2'
2872         _flags_filter=tms470_flags
2873     elif $_cc -v 2>&1 | grep -q clang; then
2874         _type=clang
2875         _ident=$($_cc --version | head -n1)
2876         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2877         _cflags_speed='-O3'
2878         _cflags_size='-Os'
2879     elif $_cc -V 2>&1 | grep -q Sun; then
2880         _type=suncc
2881         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2882         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2883         _DEPFLAGS='-xM1 -xc99'
2884         _ldflags='-std=c99'
2885         _cflags_speed='-O5'
2886         _cflags_size='-O5 -xspace'
2887         _flags_filter=suncc_flags
2888     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2889         _type=pathscale
2890         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2891         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2892         _cflags_speed='-O2'
2893         _cflags_size='-Os'
2894         _flags_filter='filter_out -Wdisabled-optimization'
2895     elif $_cc -v 2>&1 | grep -q Open64; then
2896         _type=open64
2897         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2899         _cflags_speed='-O2'
2900         _cflags_size='-Os'
2901         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2902     elif $_cc -V 2>&1 | grep -q Portland; then
2903         _type=pgi
2904         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2905         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2906         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2907         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2908         _cflags_noopt="-O1"
2909         _flags_filter=pgi_flags
2910     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2911         _type=armasm
2912         _ident=$($_cc | head -n1)
2913         # 4509: "This form of conditional instruction is deprecated"
2914         _flags="-nologo -ignore 4509"
2915         _flags_filter=armasm_flags
2916     elif $_cc 2>&1 | grep -q Microsoft; then
2917         _type=msvc
2918         _ident=$($cc 2>&1 | head -n1)
2919         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2920         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2921         _cflags_speed="-O2"
2922         _cflags_size="-O1"
2923         if $_cc 2>&1 | grep -q Linker; then
2924             _ld_o='-out:$@'
2925         else
2926             _ld_o='-Fe$@'
2927         fi
2928         _cc_o='-Fo$@'
2929         _cc_e='-P -Fi$@'
2930         _flags_filter=msvc_flags
2931         _ld_lib='lib%.a'
2932         _ld_path='-libpath:'
2933         _flags='-nologo'
2934         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2935         if [ $pfx = hostcc ]; then
2936             append _cflags -Dsnprintf=_snprintf
2937         fi
2938     elif $_cc 2>&1 | grep -q Intel; then
2939         _type=icl
2940         _ident=$($cc 2>&1 | head -n1)
2941         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2942         # Not only is O3 broken on 13.x+ but it is slower on all previous
2943         # versions (tested) as well.
2944         _cflags_speed="-O2"
2945         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2946         if $_cc 2>&1 | grep -q Linker; then
2947             _ld_o='-out:$@'
2948         else
2949             _ld_o='-Fe$@'
2950         fi
2951         _cc_o='-Fo$@'
2952         _cc_e='-P'
2953         _flags_filter=icl_flags
2954         _ld_lib='lib%.a'
2955         _ld_path='-libpath:'
2956         # -Qdiag-error to make icl error when seeing certain unknown arguments
2957         _flags='-nologo -Qdiag-error:4044,10157'
2958         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2959         # with MSVC which enables it by default.
2960         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2961         if [ $pfx = hostcc ]; then
2962             append _cflags -Dsnprintf=_snprintf
2963         fi
2964     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2965         _type=cparser
2966         _ident=$($_cc --version | head -n1)
2967         _depflags='-MMD'
2968         _cflags_speed='-O4'
2969         _cflags_size='-O2'
2970         _flags_filter=cparser_flags
2971     fi
2972
2973     eval ${pfx}_type=\$_type
2974     eval ${pfx}_ident=\$_ident
2975 }
2976
2977 set_ccvars(){
2978     eval ${1}_C=\${_cc_c-\${${1}_C}}
2979     eval ${1}_E=\${_cc_e-\${${1}_E}}
2980     eval ${1}_O=\${_cc_o-\${${1}_O}}
2981
2982     if [ -n "$_depflags" ]; then
2983         eval ${1}_DEPFLAGS=\$_depflags
2984     else
2985         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2986         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2987         eval DEP${1}FLAGS=\$_flags
2988     fi
2989 }
2990
2991 probe_cc cc "$cc"
2992 cflags_filter=$_flags_filter
2993 cflags_speed=$_cflags_speed
2994 cflags_size=$_cflags_size
2995 cflags_noopt=$_cflags_noopt
2996 add_cflags $_flags $_cflags
2997 cc_ldflags=$_ldflags
2998 set_ccvars CC
2999
3000 probe_cc hostcc "$host_cc"
3001 host_cflags_filter=$_flags_filter
3002 add_host_cflags  $_flags $_cflags
3003 set_ccvars HOSTCC
3004
3005 test -n "$cc_type" && enable $cc_type ||
3006     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3007
3008 : ${as_default:=$cc}
3009 : ${dep_cc_default:=$cc}
3010 : ${ld_default:=$cc}
3011 : ${host_ld_default:=$host_cc}
3012 set_default ar as dep_cc ld host_ld
3013
3014 probe_cc as "$as"
3015 asflags_filter=$_flags_filter
3016 add_asflags $_flags $_cflags
3017 set_ccvars AS
3018
3019 probe_cc ld "$ld"
3020 ldflags_filter=$_flags_filter
3021 add_ldflags $_flags $_ldflags
3022 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3023 LD_O=${_ld_o-$LD_O}
3024 LD_LIB=${_ld_lib-$LD_LIB}
3025 LD_PATH=${_ld_path-$LD_PATH}
3026
3027 probe_cc hostld "$host_ld"
3028 host_ldflags_filter=$_flags_filter
3029 add_host_ldflags $_flags $_ldflags
3030 HOSTLD_O=${_ld_o-$HOSTLD_O}
3031
3032 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3033     probe_cc depcc "$dep_cc"
3034     CCDEP=${_DEPCMD:-$DEPCMD}
3035     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3036     DEPCCFLAGS=$_flags
3037 fi
3038
3039 if $ar 2>&1 | grep -q Microsoft; then
3040     arflags="-nologo"
3041     ar_o='-out:$@'
3042 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3043     arflags="rq"
3044     ar_o='$@'
3045 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3046     arflags='-Xany -r -c'
3047     ar_o='$@'
3048 else
3049     arflags="rc"
3050     ar_o='$@'
3051 fi
3052
3053 add_cflags $extra_cflags
3054 add_asflags $extra_cflags
3055
3056 if test -n "$sysroot"; then
3057     case "$cc_type" in
3058         gcc|llvm_gcc|clang)
3059             add_cppflags --sysroot="$sysroot"
3060             add_ldflags --sysroot="$sysroot"
3061         ;;
3062         tms470)
3063             add_cppflags -I"$sysinclude"
3064             add_ldflags  --sysroot="$sysroot"
3065         ;;
3066     esac
3067 fi
3068
3069 if test "$cpu" = host; then
3070     enabled cross_compile &&
3071         die "--cpu=host makes no sense when cross-compiling."
3072
3073     case "$cc_type" in
3074         gcc|llvm_gcc)
3075             check_native(){
3076                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3077                 sed -n "/cc1.*$1=/{
3078                             s/.*$1=\\([^ ]*\\).*/\\1/
3079                             p
3080                             q
3081                         }" $TMPE
3082             }
3083             cpu=$(check_native -march || check_native -mcpu)
3084         ;;
3085     esac
3086
3087     test "${cpu:-host}" = host &&
3088         die "--cpu=host not supported with compiler $cc"
3089 fi
3090
3091 # Deal with common $arch aliases
3092 case "$arch" in
3093     aarch64|arm64)
3094         arch="aarch64"
3095     ;;
3096     arm*)
3097         arch="arm"
3098     ;;
3099     mips*|IP*)
3100         arch="mips"
3101     ;;
3102     parisc*|hppa*)
3103         arch="parisc"
3104     ;;
3105     "Power Macintosh"|ppc*|powerpc*)
3106         arch="ppc"
3107     ;;
3108     s390|s390x)
3109         arch="s390"
3110     ;;
3111     sh4|sh)
3112         arch="sh4"
3113     ;;
3114     sun4u|sparc*)
3115         arch="sparc"
3116     ;;
3117     tilegx|tile-gx)
3118         arch="tilegx"
3119     ;;
3120     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3121         arch="x86"
3122     ;;
3123 esac
3124
3125 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3126 enable $arch
3127
3128 # Add processor-specific flags
3129 if enabled aarch64; then
3130
3131     case $cpu in
3132         armv*)
3133             cpuflags="-march=$cpu"
3134         ;;
3135         *)
3136             cpuflags="-mcpu=$cpu"
3137         ;;
3138     esac
3139
3140 elif enabled alpha; then
3141
3142     cpuflags="-mcpu=$cpu"
3143
3144 elif enabled arm; then
3145
3146     check_arm_arch() {
3147         check_cpp_condition stddef.h \
3148             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3149             $cpuflags
3150     }
3151
3152     probe_arm_arch() {
3153         if   check_arm_arch 4;        then echo armv4;
3154         elif check_arm_arch 4T;       then echo armv4t;
3155         elif check_arm_arch 5;        then echo armv5;
3156         elif check_arm_arch 5E;       then echo armv5e;
3157         elif check_arm_arch 5T;       then echo armv5t;
3158         elif check_arm_arch 5TE;      then echo armv5te;
3159         elif check_arm_arch 5TEJ;     then echo armv5te;
3160         elif check_arm_arch 6;        then echo armv6;
3161         elif check_arm_arch 6J;       then echo armv6j;
3162         elif check_arm_arch 6K;       then echo armv6k;
3163         elif check_arm_arch 6Z;       then echo armv6z;
3164         elif check_arm_arch 6ZK;      then echo armv6zk;
3165         elif check_arm_arch 6T2;      then echo armv6t2;
3166         elif check_arm_arch 7;        then echo armv7;
3167         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3168         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3169         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3170         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3171         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3172         fi
3173     }
3174
3175     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3176
3177     case $cpu in
3178         armv*)
3179             cpuflags="-march=$cpu"
3180             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3181         ;;
3182         *)
3183             cpuflags="-mcpu=$cpu"
3184             case $cpu in
3185                 cortex-a*)                               subarch=armv7a  ;;
3186                 cortex-r*)                               subarch=armv7r  ;;
3187                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3188                 arm11*)                                  subarch=armv6   ;;
3189                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3190                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3191                 *)                             subarch=$(probe_arm_arch) ;;
3192             esac
3193         ;;
3194     esac
3195
3196     case "$subarch" in
3197         armv5t*)    enable fast_clz                ;;
3198         armv[6-8]*) enable fast_clz fast_unaligned ;;
3199     esac
3200
3201 elif enabled avr32; then
3202
3203     case $cpu in
3204         ap7[02]0[0-2])
3205             subarch="avr32_ap"
3206             cpuflags="-mpart=$cpu"
3207         ;;
3208         ap)
3209             subarch="avr32_ap"
3210             cpuflags="-march=$cpu"
3211         ;;
3212         uc3[ab]*)
3213             subarch="avr32_uc"
3214             cpuflags="-mcpu=$cpu"
3215         ;;
3216         uc)
3217             subarch="avr32_uc"
3218             cpuflags="-march=$cpu"
3219         ;;
3220     esac
3221
3222 elif enabled bfin; then
3223
3224     cpuflags="-mcpu=$cpu"
3225
3226 elif enabled mips; then
3227
3228     cpuflags="-march=$cpu"
3229
3230 elif enabled ppc; then
3231
3232     disable ldbrx
3233
3234     case $(tolower $cpu) in
3235         601|ppc601|powerpc601)
3236             cpuflags="-mcpu=601"
3237             disable altivec
3238         ;;
3239         603*|ppc603*|powerpc603*)
3240             cpuflags="-mcpu=603"
3241             disable altivec
3242         ;;
3243         604*|ppc604*|powerpc604*)
3244             cpuflags="-mcpu=604"
3245             disable altivec
3246         ;;
3247         g3|75*|ppc75*|powerpc75*)
3248             cpuflags="-mcpu=750"
3249             disable altivec
3250         ;;
3251         g4|745*|ppc745*|powerpc745*)
3252             cpuflags="-mcpu=7450"
3253         ;;
3254         74*|ppc74*|powerpc74*)
3255             cpuflags="-mcpu=7400"
3256         ;;
3257         g5|970|ppc970|powerpc970)
3258             cpuflags="-mcpu=970"
3259         ;;
3260         power[3-7]*)
3261             cpuflags="-mcpu=$cpu"
3262         ;;
3263         cell)
3264             cpuflags="-mcpu=cell"
3265             enable ldbrx
3266         ;;
3267         e500mc)
3268             cpuflags="-mcpu=e500mc"
3269             disable altivec
3270         ;;
3271         e500v2)
3272             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3273             disable altivec
3274             disable dcbzl
3275         ;;
3276         e500)
3277             cpuflags="-mcpu=8540 -mhard-float"
3278             disable altivec
3279             disable dcbzl
3280         ;;
3281     esac
3282
3283 elif enabled sparc; then
3284
3285     case $cpu in
3286         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3287             cpuflags="-mcpu=$cpu"
3288         ;;
3289         ultrasparc*|niagara[234])
3290             cpuflags="-mcpu=$cpu"
3291         ;;
3292     esac
3293
3294 elif enabled x86; then
3295
3296     case $cpu in
3297         i[345]86|pentium)
3298             cpuflags="-march=$cpu"
3299             disable i686
3300             disable mmx
3301         ;;
3302         # targets that do NOT support nopl and conditional mov (cmov)
3303         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3304             cpuflags="-march=$cpu"
3305             disable i686
3306         ;;
3307         # targets that do support nopl and conditional mov (cmov)
3308         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3309             cpuflags="-march=$cpu"
3310             enable i686
3311             enable fast_cmov
3312         ;;
3313         # targets that do support conditional mov but on which it's slow
3314         pentium4|pentium4m|prescott|nocona)
3315             cpuflags="-march=$cpu"
3316             enable i686
3317             disable fast_cmov
3318         ;;
3319     esac
3320
3321 fi
3322
3323 if [ "$cpu" != generic ]; then
3324     add_cflags  $cpuflags
3325     add_asflags $cpuflags
3326 fi
3327
3328 # compiler sanity check
3329 check_exec <<EOF
3330 int main(void){ return 0; }
3331 EOF
3332 if test "$?" != 0; then
3333     echo "$cc is unable to create an executable file."
3334     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3335         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3336         echo "Only do this if you know what cross compiling means."
3337     fi
3338     die "C compiler test failed."
3339 fi
3340
3341 add_cppflags -D_ISOC99_SOURCE
3342 check_cflags -std=c99
3343 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3344 #include <stdlib.h>
3345 EOF
3346 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3347 #include <stdlib.h>
3348 EOF
3349
3350 add_host_cppflags -D_ISOC99_SOURCE
3351 check_host_cflags -std=c99
3352 check_host_cflags -Wall
3353 check_host_cflags -O3
3354
3355 check_64bit(){
3356     arch32=$1
3357     arch64=$2
3358     expr=$3
3359     check_code cc "" "int test[2*($expr) - 1]" &&
3360         subarch=$arch64 || subarch=$arch32
3361 }
3362
3363 case "$arch" in
3364     aarch64|alpha|ia64)
3365         spic=$shared
3366     ;;
3367     mips)
3368         check_64bit mips mips64 '_MIPS_SIM > 1'
3369         spic=$shared
3370     ;;
3371     parisc)
3372         check_64bit parisc parisc64 'sizeof(void *) > 4'
3373         spic=$shared
3374     ;;
3375     ppc)
3376         check_64bit ppc ppc64 'sizeof(void *) > 4'
3377         spic=$shared
3378     ;;
3379     s390)
3380         check_64bit s390 s390x 'sizeof(void *) > 4'
3381         spic=$shared
3382     ;;
3383     sparc)
3384         check_64bit sparc sparc64 'sizeof(void *) > 4'
3385         spic=$shared
3386     ;;
3387     x86)
3388         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3389         if test "$subarch" = "x86_64"; then
3390             spic=$shared
3391         fi
3392     ;;
3393 esac
3394
3395 enable $subarch
3396 enabled spic && enable_weak pic
3397
3398 # OS specific
3399 case $target_os in
3400     aix)
3401         SHFLAGS=-shared
3402         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3403         enabled shared && add_ldflags -Wl,-brtl
3404         ;;
3405     android)
3406         disable symver
3407         SLIB_INSTALL_NAME='$(SLIBNAME)'
3408         SLIB_INSTALL_LINKS=
3409         # soname not set on purpose
3410         SHFLAGS=-shared
3411         ;;
3412     haiku)
3413         prefix_default="/boot/common"
3414         network_extralibs="-lnetwork"
3415         host_libs=
3416         ;;
3417     sunos)
3418         SHFLAGS='-shared -Wl,-h,$$(@F)'
3419         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3420         network_extralibs="-lsocket -lnsl"
3421         # When using suncc to build, the Solaris linker will mark
3422         # an executable with each instruction set encountered by
3423         # the Solaris assembler.  As our libraries contain their own
3424         # guards for processor-specific code, instead suppress
3425         # generation of the HWCAPS ELF section on Solaris x86 only.
3426         enabled_all suncc x86 &&
3427             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3428             add_ldflags -Wl,-M,mapfile
3429         nm_default='nm -P -g'
3430         ;;
3431     netbsd)
3432         disable symver
3433         oss_indev_extralibs="-lossaudio"
3434         oss_outdev_extralibs="-lossaudio"
3435         ;;
3436     openbsd|bitrig)
3437         disable symver
3438         SHFLAGS='-shared'
3439         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3440         SLIB_INSTALL_LINKS=
3441         oss_indev_extralibs="-lossaudio"
3442         oss_outdev_extralibs="-lossaudio"
3443         ;;
3444     dragonfly)
3445         disable symver
3446         ;;
3447     freebsd)
3448         ;;
3449     bsd/os)
3450         add_extralibs -lpoll -lgnugetopt
3451         ;;
3452     darwin)
3453         enabled ppc && add_asflags -force_cpusubtype_ALL
3454         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3455         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3456         add_ldflags -Wl,-dynamic,-search_paths_first
3457         SLIBSUF=".dylib"
3458         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3459         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3460         objformat="macho"
3461         enabled x86_64 && objformat="macho64"
3462         enabled_any pic shared ||
3463             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3464         ;;
3465     mingw32*)
3466         if test $target_os = "mingw32ce"; then
3467             disable network
3468         else
3469             target_os=mingw32
3470         fi
3471         LIBTARGET=i386
3472         if enabled x86_64; then
3473             LIBTARGET="i386:x86-64"
3474         elif enabled arm; then
3475             LIBTARGET=arm-wince
3476         fi
3477         check_ldflags -Wl,--nxcompat
3478         check_ldflags -Wl,--dynamicbase
3479         shlibdir_default="$bindir_default"
3480         SLIBPREF=""
3481         SLIBSUF=".dll"
3482         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3483         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3484         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3485         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3486         SLIB_INSTALL_LINKS=
3487         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3488         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3489         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3490         objformat="win32"
3491         dlltool="${cross_prefix}dlltool"
3492         ranlib=:
3493         enable dos_paths
3494         ;;
3495     win32|win64)
3496         disable symver
3497         if enabled shared; then
3498             # Link to the import library instead of the normal static library
3499             # for shared libs.
3500             LD_LIB='%.lib'
3501             # Cannot build both shared and static libs with MSVC or icl.
3502             disable static
3503         fi
3504         shlibdir_default="$bindir_default"
3505         SLIBPREF=""
3506         SLIBSUF=".dll"
3507         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3508         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3509         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3510         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3511         SLIB_INSTALL_LINKS=
3512         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3513         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3514         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3515         objformat="win32"
3516         ranlib=:
3517         enable dos_paths
3518         ;;
3519     cygwin*)
3520         target_os=cygwin
3521         shlibdir_default="$bindir_default"
3522         SLIBPREF="cyg"
3523         SLIBSUF=".dll"
3524         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3525         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3526         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3527         SLIB_INSTALL_LINKS=
3528         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3529         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3530         objformat="win32"
3531         enable dos_paths
3532         ;;
3533     *-dos|freedos|opendos)
3534         network_extralibs="-lsocket"
3535         objformat="coff"
3536         enable dos_paths
3537         add_cppflags -U__STRICT_ANSI__
3538         ;;
3539     linux)
3540         enable dv1394
3541         ;;
3542     irix*)
3543         target_os=irix
3544         ranlib="echo ignoring ranlib"
3545         ;;
3546     os/2*)
3547         ln_s="cp -f"
3548         objformat="aout"
3549         add_cppflags -D_GNU_SOURCE
3550         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3551         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3552         LIBSUF="_s.a"
3553         SLIBPREF=""
3554         SLIBSUF=".dll"
3555         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3556         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3557         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3558             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3559             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3560             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3561             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3562             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3563         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3564             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3565         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3566         enable dos_paths
3567         ;;
3568     gnu/kfreebsd)
3569         add_cppflags -D_BSD_SOURCE
3570         ;;
3571     gnu)
3572         ;;
3573     qnx)
3574         add_cppflags -D_QNX_SOURCE
3575         network_extralibs="-lsocket"
3576         ;;
3577     symbian)
3578         SLIBSUF=".dll"
3579         enable dos_paths
3580         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3581         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3582         add_ldflags -Wl,--target1-abs,--no-undefined \
3583                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3584                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3585         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3586                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3587                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3588         ;;
3589     osf1)
3590         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3591         ;;
3592     minix)
3593         ;;
3594     plan9)
3595         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3596                      -D_REENTRANT_SOURCE        \
3597                      -D_RESEARCH_SOURCE         \
3598                      -DFD_SETSIZE=96            \
3599                      -DHAVE_SOCK_OPTS
3600         add_compat strtod.o strtod=avpriv_strtod
3601         network_extralibs='-lbsd'
3602         exeobjs=compat/plan9/main.o
3603         cp_f='cp'
3604         ;;
3605     none)
3606         ;;
3607     *)
3608         die "Unknown OS '$target_os'."
3609         ;;
3610 esac
3611
3612 # determine libc flavour
3613
3614 probe_libc(){
3615     pfx=$1
3616     pfx_no_=${pfx%_}
3617     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3618     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3619         eval ${pfx}libc_type=uclibc
3620         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3621     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3622         eval ${pfx}libc_type=glibc
3623         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3624     # MinGW headers can be installed on Cygwin, so check for newlib first.
3625     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3626         eval ${pfx}libc_type=newlib
3627         add_${pfx}cppflags -U__STRICT_ANSI__
3628     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3629     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3630         eval ${pfx}libc_type=mingw64
3631         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3632         eval test \$${pfx_no_}cc_type = "gcc" &&
3633             add_${pfx}cppflags -D__printf__=__gnu_printf__
3634     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3635          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3636         eval ${pfx}libc_type=mingw32
3637         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3638             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3639             die "ERROR: MinGW32 runtime version must be >= 3.15."
3640         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3641         eval test \$${pfx_no_}cc_type = "gcc" &&
3642             add_${pfx}cppflags -D__printf__=__gnu_printf__
3643     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3644         eval ${pfx}libc_type=msvcrt
3645         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3646         # 0x601 by default unless something else is set by the user.
3647         # This can easily lead to us detecting functions only present
3648         # in such new versions and producing binaries requiring windows 7.0.
3649         # Therefore explicitly set the default to XP unless the user has
3650         # set something else on the command line.
3651         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3652             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3653     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3654         eval ${pfx}libc_type=klibc
3655     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3656         eval ${pfx}libc_type=bionic
3657     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3658         eval ${pfx}libc_type=solaris
3659         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3660     fi
3661 }
3662
3663 probe_libc
3664 test -n "$libc_type" && enable libc_$libc_type
3665 probe_libc host_
3666 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3667
3668 case $libc_type in
3669     bionic)
3670         add_compat strtod.o strtod=avpriv_strtod
3671         ;;
3672     msvcrt)
3673         add_compat strtod.o strtod=avpriv_strtod
3674         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3675                                      _snprintf=avpriv_snprintf  \
3676                                      vsnprintf=avpriv_vsnprintf
3677         ;;
3678 esac
3679
3680 # hacks for compiler/libc/os combinations
3681
3682 if enabled_all tms470 libc_glibc; then
3683     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3684     add_cppflags -D__USER_LABEL_PREFIX__=
3685     add_cppflags -D__builtin_memset=memset
3686     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3687     add_cflags   -pds=48    # incompatible redefinition of macro
3688 fi
3689
3690 if enabled_all ccc libc_glibc; then
3691     add_ldflags -Wl,-z,now  # calls to libots crash without this
3692 fi
3693
3694 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3695     add_cppflags '-I\$(SRC_PATH)/compat/float'
3696
3697 esc(){
3698     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3699 }
3700
3701 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3702
3703 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3704
3705 set_default $PATHS_LIST
3706 set_default nm
3707
3708 # we need to build at least one lib type
3709 if ! enabled_any static shared; then
3710     cat <<EOF
3711 At least one library type must be built.
3712 Specify --enable-static to build the static libraries or --enable-shared to
3713 build the shared libraries as well. To only build the shared libraries specify
3714 --disable-static in addition to --enable-shared.
3715 EOF
3716     exit 1;
3717 fi
3718
3719 die_license_disabled() {
3720     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3721 }
3722
3723 die_license_disabled gpl libcdio
3724 die_license_disabled gpl libx264
3725 die_license_disabled gpl libx265
3726 die_license_disabled gpl libxavs
3727 die_license_disabled gpl libxvid
3728 die_license_disabled gpl x11grab
3729
3730 die_license_disabled nonfree libfaac
3731 die_license_disabled nonfree libfdk_aac
3732 die_license_disabled nonfree openssl
3733
3734 die_license_disabled version3 libopencore_amrnb
3735 die_license_disabled version3 libopencore_amrwb
3736 die_license_disabled version3 libvo_aacenc
3737 die_license_disabled version3 libvo_amrwbenc
3738
3739 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3740
3741 disabled optimizations || check_cflags -fomit-frame-pointer
3742
3743 enable_weak_pic() {
3744     disabled pic && return
3745     enable pic
3746     add_cppflags -DPIC
3747     case "$target_os" in
3748     mingw*|cygwin*)
3749         ;;
3750     *)
3751         add_cflags -fPIC
3752         ;;
3753     esac
3754     add_asflags  -fPIC
3755 }
3756
3757 enabled pic && enable_weak_pic
3758
3759 check_cc <<EOF || die "Symbol mangling check failed."
3760 int ff_extern;
3761 EOF
3762 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3763 extern_prefix=${sym%%ff_extern*}
3764
3765 check_cc <<EOF && enable_weak inline_asm
3766 void foo(void) { __asm__ volatile ("" ::); }
3767 EOF
3768
3769 _restrict=
3770 for restrict_keyword in restrict __restrict__ __restrict; do
3771     check_cc <<EOF && _restrict=$restrict_keyword && break
3772 void foo(char * $restrict_keyword p);
3773 EOF
3774 done
3775
3776 check_cc <<EOF && enable pragma_deprecated
3777 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3778 EOF
3779
3780 check_cc <<EOF && enable attribute_packed
3781 struct { int x; } __attribute__((packed)) x;
3782 EOF
3783
3784 check_cc <<EOF && enable attribute_may_alias
3785 union { int x; } __attribute__((may_alias)) x;
3786 EOF
3787
3788 check_cc <<EOF || die "endian test failed"
3789 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3790 EOF
3791 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3792
3793 check_gas() {
3794     log "check_gas using '$as' as AS"
3795     # :vararg is used on aarch64, arm and ppc altivec
3796     check_as <<EOF || return 1
3797 .macro m n, y:vararg=0
3798 \n: .int \y
3799 .endm
3800 m x
3801 EOF
3802     # .altmacro is only used in arm asm
3803     ! enabled arm || check_as <<EOF || return 1
3804 .altmacro
3805 EOF
3806     enable gnu_as
3807     return 0
3808 }
3809
3810 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3811     nogas=:
3812     enabled_any arm aarch64 && nogas=die
3813     enabled_all ppc altivec && nogas=warn
3814     as_noop=-v
3815
3816     case $as_type in
3817         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3818         gcc)  gaspp_as_type=gas ;;
3819         *)    gaspp_as_type=$as_type ;;
3820     esac
3821
3822     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3823
3824     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3825         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3826
3827     if ! check_gas ; then
3828         as=${gas:=$as}
3829         check_gas || \
3830             $nogas "GNU assembler not found, install/update gas-preprocessor"
3831     fi
3832
3833     check_as <<EOF && enable as_func
3834 .func test
3835 .endfunc
3836 EOF
3837 fi
3838
3839 check_inline_asm inline_asm_labels '"1:\n"'
3840
3841 if enabled aarch64; then
3842     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3843     # internal assembler in clang 3.3 does not support this instruction
3844     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3845     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3846
3847     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3848
3849 elif enabled alpha; then
3850
3851     check_cflags -mieee
3852
3853 elif enabled arm; then
3854
3855     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3856     enabled thumb && check_cflags -mthumb || check_cflags -marm
3857
3858     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3859         enable vfp_args
3860     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3861         case "${cross_prefix:-$cc}" in
3862             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3863             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3864 __asm__ (".eabi_attribute 28, 1");
3865 int main(void) { return 0; }
3866 EOF
3867         esac
3868         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3869     fi
3870
3871     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3872     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3873     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3874     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3875     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3876     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3877
3878     [ $target_os = linux ] || [ $target_os = android ] ||
3879         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3880             $ARCH_EXT_LIST_ARM
3881
3882     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3883
3884     check_as <<EOF && enable as_dn_directive
3885 ra .dn d0.i16
3886 .unreq ra
3887 EOF
3888
3889     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3890
3891 elif enabled mips; then
3892
3893     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3894
3895 elif enabled parisc; then
3896
3897     if enabled gcc; then
3898         case $($cc -dumpversion) in
3899             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3900         esac
3901     fi
3902
3903 elif enabled ppc; then
3904
3905     enable local_aligned_8 local_aligned_16
3906
3907     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3908     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3909     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3910     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3911
3912     # AltiVec flags: The FSF version of GCC differs from the Apple version
3913     if enabled altivec; then
3914         check_cflags -maltivec -mabi=altivec &&
3915         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3916         check_cflags -faltivec
3917
3918         # check if our compiler supports Motorola AltiVec C API
3919         check_cc <<EOF || disable altivec
3920 $inc_altivec_h
3921 int main(void) {
3922     vector signed int v1 = (vector signed int) { 0 };
3923     vector signed int v2 = (vector signed int) { 1 };
3924     v1 = vec_add(v1, v2);
3925     return 0;
3926 }
3927 EOF
3928
3929         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3930     fi
3931
3932 elif enabled x86; then
3933
3934     check_builtin rdtsc    intrin.h   "__rdtsc()"
3935     check_builtin mm_empty mmintrin.h "_mm_empty()"
3936
3937     enable local_aligned_8 local_aligned_16
3938
3939     # check whether EBP is available on x86
3940     # As 'i' is stored on the stack, this program will crash
3941     # if the base pointer is used to access it because the
3942     # base pointer is cleared in the inline assembly code.
3943     check_exec_crash <<EOF && enable ebp_available
3944 volatile int i=0;
3945 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3946 return i;
3947 EOF
3948
3949     # check whether EBX is available on x86
3950     check_inline_asm ebx_available '""::"b"(0)' &&
3951         check_inline_asm ebx_available '"":::"%ebx"'
3952
3953     # check whether xmm clobbers are supported
3954     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3955
3956     # check whether binutils is new enough to compile SSSE3/MMXEXT
3957     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3958     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3959
3960     if ! disabled_any asm mmx yasm; then
3961         if check_cmd $yasmexe --version; then
3962             enabled x86_64 && yasm_extra="-m amd64"
3963             yasm_debug="-g dwarf2"
3964         elif check_cmd nasm -v; then
3965             yasmexe=nasm
3966             yasm_debug="-g -F dwarf"
3967             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3968         fi
3969
3970         YASMFLAGS="-f $objformat $yasm_extra"
3971         enabled pic               && append YASMFLAGS "-DPIC"
3972         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3973         case "$objformat" in
3974             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3975         esac
3976
3977         check_yasm "movbe ecx, [5]" && enable yasm ||
3978             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3979         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3980         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3981         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3982         check_yasm "CPU amdnop" || disable cpunop
3983     fi
3984
3985     case "$cpu" in
3986         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3987             disable fast_clz
3988         ;;
3989     esac
3990
3991 fi
3992
3993 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3994
3995 check_ldflags -Wl,--as-needed
3996
3997 if check_func dlopen; then
3998     ldl=
3999 elif check_func dlopen -ldl; then
4000     ldl=-ldl
4001 fi
4002
4003 if ! disabled network; then
4004     check_func getaddrinfo $network_extralibs
4005     check_func getservbyport $network_extralibs
4006     check_func inet_aton $network_extralibs
4007
4008     check_type netdb.h "struct addrinfo"
4009     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4010     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4011     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4012     check_type poll.h "struct pollfd"
4013     check_type netinet/sctp.h "struct sctp_event_subscribe"
4014     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4015     check_type netinet/in.h "struct sockaddr_in6"
4016     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4017     check_type "sys/types.h sys/socket.h" socklen_t
4018
4019     # Prefer arpa/inet.h over winsock2
4020     if check_header arpa/inet.h ; then
4021         check_func closesocket
4022     elif check_header winsock2.h ; then
4023         check_func_headers winsock2.h closesocket -lws2 &&
4024             network_extralibs="-lws2" ||
4025         { check_func_headers winsock2.h closesocket -lws2_32 &&
4026             network_extralibs="-lws2_32"; } || disable winsock2_h network
4027         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4028
4029         check_type ws2tcpip.h socklen_t
4030         check_type ws2tcpip.h "struct addrinfo"
4031         check_type ws2tcpip.h "struct group_source_req"
4032         check_type ws2tcpip.h "struct ip_mreq_source"
4033         check_type ws2tcpip.h "struct ipv6_mreq"
4034         check_type winsock2.h "struct pollfd"
4035         check_struct winsock2.h "struct sockaddr" sa_len
4036         check_type ws2tcpip.h "struct sockaddr_in6"
4037         check_type ws2tcpip.h "struct sockaddr_storage"
4038     else
4039         disable network
4040     fi
4041 fi
4042
4043 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4044 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4045 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4046 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4047
4048 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4049 check_func  ${malloc_prefix}memalign            && enable memalign
4050 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4051
4052 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4053     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
4054
4055 check_func  fcntl
4056 check_func  fork
4057 check_func  gethrtime
4058 check_func  getopt
4059 check_func  getrusage
4060 check_func  gettimeofday
4061 check_func  isatty
4062 check_func  localtime_r
4063 check_func  mach_absolute_time
4064 check_func  mkstemp
4065 check_func  mmap
4066 check_func  mprotect
4067 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4068 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4069 check_func  sched_getaffinity
4070 check_func  setrlimit
4071 check_func  strerror_r
4072 check_func  strptime
4073 check_func  sysconf
4074 check_func  sysctl
4075 check_func  usleep
4076
4077 check_func_headers io.h setmode
4078 check_func_headers stdlib.h getenv
4079
4080 check_func_headers windows.h CoTaskMemFree -lole32
4081 check_func_headers windows.h GetProcessAffinityMask
4082 check_func_headers windows.h GetProcessTimes
4083 check_func_headers windows.h GetSystemTimeAsFileTime
4084 check_func_headers windows.h MapViewOfFile
4085 check_func_headers windows.h SetConsoleTextAttribute
4086 check_func_headers windows.h Sleep
4087 check_func_headers windows.h VirtualAlloc
4088
4089 check_header direct.h
4090 check_header dlfcn.h
4091 check_header dxva.h
4092 check_header dxva2api.h
4093 check_header io.h
4094 check_header mach/mach_time.h
4095 check_header malloc.h
4096 check_header poll.h
4097 check_header sys/mman.h
4098 check_header sys/param.h
4099 check_header sys/resource.h
4100 check_header sys/select.h
4101 check_header sys/time.h
4102 check_header sys/un.h
4103 check_header unistd.h
4104 check_header vdpau/vdpau.h
4105 check_header vdpau/vdpau_x11.h
4106 check_header VideoDecodeAcceleration/VDADecoder.h
4107 check_header windows.h
4108 check_header X11/extensions/XvMClib.h
4109
4110 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4111 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4112 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4113
4114 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4115
4116 if ! disabled w32threads && ! enabled pthreads; then
4117     check_func_headers "windows.h process.h" _beginthreadex &&
4118         enable w32threads || disable w32threads
4119 fi
4120
4121 # check for some common methods of building with pthread support
4122 # do this before the optional library checks as some of them require pthreads
4123 if ! disabled pthreads && ! enabled w32threads; then
4124     enable pthreads
4125     if check_func pthread_join -pthread; then
4126         add_cflags -pthread
4127         add_extralibs -pthread
4128     elif check_func pthread_join -pthreads; then
4129         add_cflags -pthreads
4130         add_extralibs -pthreads
4131     elif check_func pthread_join -lpthreadGC2; then
4132         add_extralibs -lpthreadGC2
4133     elif check_lib pthread.h pthread_join -lpthread; then
4134         :
4135     elif ! check_func pthread_join; then
4136         disable pthreads
4137     fi
4138 fi
4139
4140 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4141 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4142
4143 check_lib math.h sin -lm && LIBM="-lm"
4144 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4145
4146 atan2f_args=2
4147 ldexpf_args=2
4148 powf_args=2
4149
4150 for func in $MATH_FUNCS; do
4151     eval check_mathfunc $func \${${func}_args:-1}
4152 done
4153
4154 # these are off by default, so fail if requested and not available
4155 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4156                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4157                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4158 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4159 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4160 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4161 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4162 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4163 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4164 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4165 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4166                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4167                                done || die "ERROR: libgsm not found"; }
4168 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4169 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4170 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4171 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4172 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4173 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4174                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4175 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4176 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4177 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4178 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4179 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4180 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4181 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4182 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4183 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4184 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4185 enabled libvpx            && {
4186     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4187                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4188     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4189                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4190     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4191     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4192 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4193 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4194 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4195                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4196                                die "ERROR: libx264 version must be >= 0.118."; }
4197 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4198                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4199                                die "ERROR: libx265 version must be >= 17."; }
4200 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4201 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4202 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4203                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4204                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4205                                die "ERROR: openssl not found"; }
4206
4207 if enabled gnutls; then
4208     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4209     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4210 fi
4211
4212 # libdc1394 check
4213 if enabled libdc1394; then
4214     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4215         enable libdc1394_2; } ||
4216     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4217         enable libdc1394_1; } ||
4218     die "ERROR: No version of libdc1394 found "
4219 fi
4220
4221 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4222     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4223     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4224     enable sdl
4225 fi
4226
4227 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4228 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4229
4230 check_header linux/fb.h
4231 check_header linux/videodev2.h
4232 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4233
4234 check_header sys/videoio.h
4235
4236 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4237 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4238 # w32api 3.12 had it defined wrong
4239 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4240
4241 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4242 { check_header dev/bktr/ioctl_meteor.h &&
4243   check_header dev/bktr/ioctl_bt848.h; } ||
4244 { check_header machine/ioctl_meteor.h &&
4245   check_header machine/ioctl_bt848.h; } ||
4246 { check_header dev/video/meteor/ioctl_meteor.h &&
4247   check_header dev/video/bktr/ioctl_bt848.h; } ||
4248 check_header dev/ic/bt8xx.h
4249
4250 check_header sndio.h
4251 check_header sys/soundcard.h
4252 check_header soundcard.h
4253
4254 enabled_any alsa_indev alsa_outdev &&
4255     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4256
4257 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4258     check_func jack_port_get_latency_range -ljack
4259
4260 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4261
4262 if enabled libcdio; then
4263     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4264     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4265 fi
4266
4267 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4268
4269 enabled x11grab                                           &&
4270 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4271 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4272 { enabled xlib || die "ERROR: Xlib not found"; }
4273
4274 enabled vdpau &&
4275     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4276     disable vdpau
4277
4278 enabled vdpau && enabled xlib &&
4279     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4280     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4281     enable vdpau_x11
4282
4283 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4284
4285 # add some useful compiler flags if supported
4286 check_cflags -Wdeclaration-after-statement
4287 check_cflags -Wall
4288 check_cflags -Wdisabled-optimization
4289 check_cflags -Wpointer-arith
4290 check_cflags -Wredundant-decls
4291 check_cflags -Wcast-qual
4292 check_cflags -Wwrite-strings
4293 check_cflags -Wtype-limits
4294 check_cflags -Wundef
4295 check_cflags -Wmissing-prototypes
4296 check_cflags -Wstrict-prototypes
4297 enabled extra_warnings && check_cflags -Winline
4298
4299 check_disable_warning(){
4300     warning_flag=-W${1#-Wno-}
4301     test_cflags $warning_flag && add_cflags $1
4302 }
4303
4304 check_disable_warning -Wno-parentheses
4305 check_disable_warning -Wno-switch
4306 check_disable_warning -Wno-format-zero-length
4307 check_disable_warning -Wno-pointer-sign
4308
4309 # add some linker flags
4310 check_ldflags -Wl,--warn-common
4311 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4312 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4313 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4314
4315 # add some strip flags
4316 # -wN '..@*' is more selective than -x, but not available everywhere.
4317 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4318
4319 enabled neon_clobber_test &&
4320     check_ldflags -Wl,--wrap,avcodec_open2              \
4321                   -Wl,--wrap,avcodec_decode_audio4      \
4322                   -Wl,--wrap,avcodec_decode_video2      \
4323                   -Wl,--wrap,avcodec_decode_subtitle2   \
4324                   -Wl,--wrap,avcodec_encode_audio2      \
4325                   -Wl,--wrap,avcodec_encode_video2      \
4326                   -Wl,--wrap,avcodec_encode_subtitle    \
4327                   -Wl,--wrap,avresample_convert ||
4328     disable neon_clobber_test
4329
4330 enabled xmm_clobber_test &&
4331     check_ldflags -Wl,--wrap,avcodec_open2              \
4332                   -Wl,--wrap,avcodec_decode_audio4      \
4333                   -Wl,--wrap,avcodec_decode_video2      \
4334                   -Wl,--wrap,avcodec_decode_subtitle2   \
4335                   -Wl,--wrap,avcodec_encode_audio2      \
4336                   -Wl,--wrap,avcodec_encode_video2      \
4337                   -Wl,--wrap,avcodec_encode_subtitle    \
4338                   -Wl,--wrap,avresample_convert         \
4339                   -Wl,--wrap,sws_scale ||
4340     disable xmm_clobber_test
4341
4342 echo "X{};" > $TMPV
4343 if test_ldflags -Wl,--version-script,$TMPV; then
4344     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4345     check_cc <<EOF && enable symver_asm_label
4346 void ff_foo(void) __asm__ ("av_foo@VERSION");
4347 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4348 EOF
4349     check_cc <<EOF && enable symver_gnu_asm
4350 __asm__(".symver ff_foo,av_foo@VERSION");
4351 void ff_foo(void) {}
4352 EOF
4353 fi
4354
4355 if [ -z "$optflags" ]; then
4356     if enabled small; then
4357         optflags=$cflags_size
4358     elif enabled optimizations; then
4359         optflags=$cflags_speed
4360     else
4361         optflags=$cflags_noopt
4362     fi
4363 fi
4364
4365 check_optflags(){
4366     check_cflags "$@"
4367     enabled lto && check_ldflags "$@"
4368 }
4369
4370
4371 if enabled lto; then
4372     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4373     check_cflags  -flto
4374     check_ldflags -flto $cpuflags
4375 fi
4376
4377 check_optflags $optflags
4378 check_optflags -fno-math-errno
4379 check_optflags -fno-signed-zeros
4380
4381 if enabled icc; then
4382     # Just warnings, no remarks
4383     check_cflags -w1
4384     # -wd: Disable following warnings
4385     # 144, 167, 556: -Wno-pointer-sign
4386     # 1292: attribute "foo" ignored
4387     # 1419: external declaration in primary source file
4388     # 10006: ignoring unknown option -fno-signed-zeros
4389     # 10148: ignoring unknown option -Wno-parentheses
4390     # 10156: ignoring option '-W'; no argument required
4391     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4392     # 11030: Warning unknown option --as-needed
4393     # 10156: ignoring option '-export'; no argument required
4394     check_ldflags -wd10156,11030
4395     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4396     enable ebp_available
4397     if enabled x86_32; then
4398         icc_version=$($cc -dumpversion)
4399         test ${icc_version%%.*} -ge 11 &&
4400             check_cflags -falign-stack=maintain-16-byte ||
4401             disable aligned_stack
4402     fi
4403 elif enabled ccc; then
4404     # disable some annoying warnings
4405     add_cflags -msg_disable bitnotint
4406     add_cflags -msg_disable mixfuncvoid
4407     add_cflags -msg_disable nonstandcast
4408     add_cflags -msg_disable unsupieee
4409 elif enabled gcc; then
4410     check_optflags -fno-tree-vectorize
4411     check_cflags -Werror=implicit-function-declaration
4412     check_cflags -Werror=missing-prototypes
4413     check_cflags -Werror=return-type
4414     check_cflags -Werror=declaration-after-statement
4415     check_cflags -Werror=vla
4416     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4417 elif enabled llvm_gcc; then
4418     check_cflags -mllvm -stack-alignment=16
4419 elif enabled clang; then
4420     check_cflags -mllvm -stack-alignment=16
4421     check_cflags -Qunused-arguments
4422     check_cflags -Werror=implicit-function-declaration
4423     check_cflags -Werror=missing-prototypes
4424     check_cflags -Werror=return-type
4425 elif enabled cparser; then
4426     add_cflags -Wno-missing-variable-declarations
4427     add_cflags -Wno-empty-statement
4428 elif enabled armcc; then
4429     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4430     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4431     # 2523: use of inline assembly is deprecated
4432     add_cflags -W${armcc_opt},--diag_suppress=2523
4433     add_cflags -W${armcc_opt},--diag_suppress=1207
4434     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4435     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4436     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4437     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4438 elif enabled tms470; then
4439     add_cflags -pds=824 -pds=837
4440     disable inline_asm
4441 elif enabled pathscale; then
4442     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4443 elif enabled_any msvc icl; then
4444     enabled x86_32 && disable aligned_stack
4445     enabled_all x86_32 debug && add_cflags -Oy-
4446     enabled debug && add_ldflags -debug
4447     enable pragma_deprecated
4448     if enabled icl; then
4449         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4450         # (correctly) on icl 13.x.
4451         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4452             add_cflags -Qansi-alias
4453         # icl will pass the inline asm tests but inline asm is currently
4454         # not supported (build will fail)
4455         disable inline_asm
4456     fi
4457 fi
4458
4459 case $as_type in
4460     clang)
4461         add_asflags -Qunused-arguments
4462     ;;
4463 esac
4464
4465 case $ld_type in
4466     clang)
4467         check_ldflags -Qunused-arguments
4468     ;;
4469 esac
4470
4471 case $target_os in
4472     osf1)
4473         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4474     ;;
4475     plan9)
4476         add_cppflags -Dmain=plan9_main
4477     ;;
4478 esac
4479
4480 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4481
4482 check_deps $CONFIG_LIST       \
4483            $CONFIG_EXTRA      \
4484            $HAVE_LIST         \
4485            $ALL_COMPONENTS    \
4486
4487 enabled_all dxva2 CoTaskMemFree &&
4488     prepend avconv_libs $($ldflags_filter "-lole32") &&
4489     enable dxva2_lib
4490
4491 ! enabled_any memalign posix_memalign aligned_malloc &&
4492     enabled $simd_align_16 && enable memalign_hack
4493
4494 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4495
4496 for thread in $THREADS_LIST; do
4497     if enabled $thread; then
4498         test -n "$thread_type" &&
4499             die "ERROR: Only one thread type must be selected." ||
4500             thread_type="$thread"
4501     fi
4502 done
4503
4504 enabled zlib && add_cppflags -DZLIB_CONST
4505
4506 # conditional library dependencies, in linking order
4507 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4508 enabled resample_filter && prepend avfilter_deps "avresample"
4509 enabled scale_filter    && prepend avfilter_deps "swscale"
4510
4511 enabled opus_decoder    && prepend avcodec_deps "avresample"
4512
4513 expand_deps(){
4514     lib_deps=${1}_deps
4515     eval "deps=\$$lib_deps"
4516     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4517     unique $lib_deps
4518 }
4519
4520 map 'expand_deps $v' $LIBRARY_LIST
4521
4522 echo "install prefix            $prefix"
4523 echo "source path               $source_path"
4524 echo "C compiler                $cc"
4525 echo "C library                 $libc_type"
4526 if test "$host_cc" != "$cc"; then
4527     echo "host C compiler           $host_cc"
4528     echo "host C library            $host_libc_type"
4529 fi
4530 echo "ARCH                      $arch ($cpu)"
4531 if test "$build_suffix" != ""; then
4532     echo "build suffix              $build_suffix"
4533 fi
4534 if test "$extra_version" != ""; then
4535     echo "version string suffix     $extra_version"
4536 fi
4537 echo "big-endian                ${bigendian-no}"
4538 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4539 if enabled x86; then
4540     echo "${yasmexe}                      ${yasm-no}"
4541     echo "MMX enabled               ${mmx-no}"
4542     echo "MMXEXT enabled            ${mmxext-no}"
4543     echo "3DNow! enabled            ${amd3dnow-no}"
4544     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4545     echo "SSE enabled               ${sse-no}"
4546     echo "SSSE3 enabled             ${ssse3-no}"
4547     echo "AVX enabled               ${avx-no}"
4548     echo "XOP enabled               ${xop-no}"
4549     echo "FMA3 enabled              ${fma3-no}"
4550     echo "FMA4 enabled              ${fma4-no}"
4551     echo "i686 features enabled     ${i686-no}"
4552     echo "CMOV is fast              ${fast_cmov-no}"
4553     echo "EBX available             ${ebx_available-no}"
4554     echo "EBP available             ${ebp_available-no}"
4555 fi
4556 if enabled aarch64; then
4557     echo "NEON enabled              ${neon-no}"
4558     echo "VFP enabled               ${vfp-no}"
4559 fi
4560 if enabled arm; then
4561     echo "ARMv5TE enabled           ${armv5te-no}"
4562     echo "ARMv6 enabled             ${armv6-no}"
4563     echo "ARMv6T2 enabled           ${armv6t2-no}"
4564     echo "VFP enabled               ${vfp-no}"
4565     echo "NEON enabled              ${neon-no}"
4566 fi
4567 if enabled ppc; then
4568     echo "AltiVec enabled           ${altivec-no}"
4569     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4570     echo "dcbzl available           ${dcbzl-no}"
4571 fi
4572 echo "debug symbols             ${debug-no}"
4573 echo "optimize for size         ${small-no}"
4574 echo "optimizations             ${optimizations-no}"
4575 echo "static                    ${static-no}"
4576 echo "shared                    ${shared-no}"
4577 echo "new filter support        ${avfilter-no}"
4578 echo "network support           ${network-no}"
4579 echo "threading support         ${thread_type-no}"
4580 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4581 echo "SDL support               ${sdl-no}"
4582 test -n "$random_seed" &&
4583     echo "random seed               ${random_seed}"
4584 echo
4585
4586 echo "External libraries:"
4587 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4588 echo
4589
4590 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4591     echo "Enabled ${type}s:"
4592     eval list=\$$(toupper $type)_LIST
4593     print_enabled '_*' $list | print_3_columns
4594     echo
4595 done
4596
4597 license="LGPL version 2.1 or later"
4598 if enabled nonfree; then
4599     license="nonfree and unredistributable"
4600 elif enabled gplv3; then
4601     license="GPL version 3 or later"
4602 elif enabled lgplv3; then
4603     license="LGPL version 3 or later"
4604 elif enabled gpl; then
4605     license="GPL version 2 or later"
4606 fi
4607
4608 echo "License: $license"
4609
4610 echo "Creating config.mak and config.h..."
4611
4612 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4613
4614 config_files="$TMPH config.mak"
4615
4616 cat > config.mak <<EOF
4617 # Automatically generated by configure - do not modify!
4618 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4619 prefix=$prefix
4620 LIBDIR=\$(DESTDIR)$libdir
4621 SHLIBDIR=\$(DESTDIR)$shlibdir
4622 INCDIR=\$(DESTDIR)$incdir
4623 BINDIR=\$(DESTDIR)$bindir
4624 DATADIR=\$(DESTDIR)$datadir
4625 DOCDIR=\$(DESTDIR)$docdir
4626 MANDIR=\$(DESTDIR)$mandir
4627 SRC_PATH=$source_path
4628 CC_IDENT=$cc_ident
4629 ARCH=$arch
4630 INTRINSICS=$intrinsics
4631 CC=$cc
4632 AS=$as
4633 LD=$ld
4634 DEPCC=$dep_cc
4635 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4636 DEPAS=$as
4637 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4638 YASM=$yasmexe
4639 DEPYASM=$yasmexe
4640 AR=$ar
4641 ARFLAGS=$arflags
4642 AR_O=$ar_o
4643 RANLIB=$ranlib
4644 STRIP=$strip
4645 LN_S=$ln_s
4646 CPPFLAGS=$CPPFLAGS
4647 CFLAGS=$CFLAGS
4648 ASFLAGS=$ASFLAGS
4649 AS_C=$AS_C
4650 AS_O=$AS_O
4651 CC_C=$CC_C
4652 CC_E=$CC_E
4653 CC_O=$CC_O
4654 LD_O=$LD_O
4655 LD_LIB=$LD_LIB
4656 LD_PATH=$LD_PATH
4657 DLLTOOL=$dlltool
4658 LDFLAGS=$LDFLAGS
4659 LDEXEFLAGS=$LDEXEFLAGS
4660 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4661 STRIPFLAGS=$STRIPFLAGS
4662 YASMFLAGS=$YASMFLAGS
4663 BUILDSUF=$build_suffix
4664 FULLNAME=$FULLNAME
4665 LIBPREF=$LIBPREF
4666 LIBSUF=$LIBSUF
4667 LIBNAME=$LIBNAME
4668 SLIBPREF=$SLIBPREF
4669 SLIBSUF=$SLIBSUF
4670 EXESUF=$EXESUF
4671 EXTRA_VERSION=$extra_version
4672 CCDEP=$CCDEP
4673 CCDEP_FLAGS=$CCDEP_FLAGS
4674 ASDEP=$ASDEP
4675 ASDEP_FLAGS=$ASDEP_FLAGS
4676 CC_DEPFLAGS=$CC_DEPFLAGS
4677 AS_DEPFLAGS=$AS_DEPFLAGS
4678 HOSTCC=$host_cc
4679 HOSTLD=$host_ld
4680 HOSTCFLAGS=$host_cflags
4681 HOSTCPPFLAGS=$host_cppflags
4682 HOSTEXESUF=$HOSTEXESUF
4683 HOSTLDFLAGS=$host_ldflags
4684 HOSTLIBS=$host_libs
4685 DEPHOSTCC=$host_cc
4686 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4687 HOSTCCDEP=$HOSTCCDEP
4688 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4689 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4690 HOSTCC_C=$HOSTCC_C
4691 HOSTCC_O=$HOSTCC_O
4692 HOSTLD_O=$HOSTLD_O
4693 TARGET_EXEC=$target_exec $target_exec_args
4694 TARGET_PATH=$target_path
4695 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4696 CFLAGS-avplay=$sdl_cflags
4697 ZLIB=$($ldflags_filter -lz)
4698 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4699 EXTRALIBS=$extralibs
4700 COMPAT_OBJS=$compat_objs
4701 EXEOBJS=$exeobjs
4702 INSTALL=install
4703 LIBTARGET=${LIBTARGET}
4704 SLIBNAME=${SLIBNAME}
4705 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4706 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4707 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4708 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4709 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4710 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4711 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4712 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4713 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4714 EOF
4715
4716 get_version(){
4717     lcname=lib${1}
4718     name=$(toupper $lcname)
4719     file=$source_path/$lcname/version.h
4720     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4721     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4722     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4723     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4724     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4725 }
4726
4727 map 'get_version $v' $LIBRARY_LIST
4728
4729 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4730
4731 print_program_libs(){
4732     eval "program_libs=\$${1}_libs"
4733     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4734 }
4735
4736 map 'print_program_libs $v' $PROGRAM_LIST
4737
4738 cat > $TMPH <<EOF
4739 /* Automatically generated by configure - do not modify! */
4740 #ifndef LIBAV_CONFIG_H
4741 #define LIBAV_CONFIG_H
4742 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4743 #define LIBAV_LICENSE "$(c_escape $license)"
4744 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4745 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4746 #define restrict $_restrict
4747 #define EXTERN_PREFIX "${extern_prefix}"
4748 #define EXTERN_ASM ${extern_prefix}
4749 #define SLIBSUF "$SLIBSUF"
4750 EOF
4751
4752 test -n "$malloc_prefix" &&
4753     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4754
4755 if enabled yasm; then
4756     append config_files $TMPASM
4757     printf '' >$TMPASM
4758 fi
4759
4760 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4761
4762 print_config ARCH_   "$config_files" $ARCH_LIST
4763 print_config HAVE_   "$config_files" $HAVE_LIST
4764 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4765                                      $CONFIG_EXTRA      \
4766                                      $ALL_COMPONENTS    \
4767
4768 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4769
4770 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4771 cp_if_changed $TMPH config.h
4772 touch .config
4773
4774 enabled yasm && cp_if_changed $TMPASM config.asm
4775
4776 cat > $TMPH <<EOF
4777 /* Generated by ffconf */
4778 #ifndef AVUTIL_AVCONFIG_H
4779 #define AVUTIL_AVCONFIG_H
4780 EOF
4781
4782 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4783
4784 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4785
4786 cp_if_changed $TMPH libavutil/avconfig.h
4787
4788 test -n "$WARNINGS" && printf "\n$WARNINGS"
4789
4790 # build pkg-config files
4791
4792 lib_version(){
4793     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4794 }
4795
4796 pkgconfig_generate(){
4797     name=$1
4798     shortname=${name#lib}${build_suffix}
4799     comment=$2
4800     version=$3
4801     libs=$4
4802     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4803     requires=${requires%, }
4804     enabled ${name#lib} || return 0
4805     mkdir -p $name
4806     cat <<EOF > $name/$name.pc
4807 prefix=$prefix
4808 exec_prefix=\${prefix}
4809 libdir=$libdir
4810 includedir=$incdir
4811
4812 Name: $name
4813 Description: $comment
4814 Version: $version
4815 Requires: $(enabled shared || echo $requires)
4816 Requires.private: $(enabled shared && echo $requires)
4817 Conflicts:
4818 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4819 Libs.private: $(enabled shared && echo $libs)
4820 Cflags: -I\${includedir}
4821 EOF
4822     cat <<EOF > $name/$name-uninstalled.pc
4823 prefix=
4824 exec_prefix=
4825 libdir=\${pcfiledir}
4826 includedir=${source_path}
4827
4828 Name: $name
4829 Description: $comment
4830 Version: $version
4831 Requires: $requires
4832 Conflicts:
4833 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4834 Cflags: -I\${includedir}
4835 EOF