f53332d9163ddf7e26c8bbfef8d195c6cf2dbdaa
[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     gmtime_r
1457     inet_aton
1458     isatty
1459     jack_port_get_latency_range
1460     localtime_r
1461     mach_absolute_time
1462     MapViewOfFile
1463     memalign
1464     mkstemp
1465     mmap
1466     mprotect
1467     nanosleep
1468     posix_memalign
1469     sched_getaffinity
1470     SetConsoleTextAttribute
1471     setmode
1472     setrlimit
1473     Sleep
1474     strerror_r
1475     strptime
1476     sysconf
1477     sysctl
1478     usleep
1479     VirtualAlloc
1480 "
1481
1482 TOOLCHAIN_FEATURES="
1483     as_dn_directive
1484     as_func
1485     asm_mod_q
1486     attribute_may_alias
1487     attribute_packed
1488     ebp_available
1489     ebx_available
1490     gnu_as
1491     ibm_asm
1492     inline_asm_labels
1493     pragma_deprecated
1494     symver_asm_label
1495     symver_gnu_asm
1496     vfp_args
1497     xform_asm
1498     xmm_clobbers
1499 "
1500
1501 TYPES_LIST="
1502     CONDITION_VARIABLE_Ptr
1503     socklen_t
1504     struct_addrinfo
1505     struct_group_source_req
1506     struct_ip_mreq_source
1507     struct_ipv6_mreq
1508     struct_pollfd
1509     struct_rusage_ru_maxrss
1510     struct_sockaddr_in6
1511     struct_sockaddr_sa_len
1512     struct_sockaddr_storage
1513     struct_v4l2_frmivalenum_discrete
1514 "
1515
1516 HAVE_LIST="
1517     $ARCH_EXT_LIST
1518     $(add_suffix _external $ARCH_EXT_LIST)
1519     $(add_suffix _inline   $ARCH_EXT_LIST)
1520     $ARCH_FEATURES
1521     $ATOMICS_LIST
1522     $BUILTIN_LIST
1523     $HAVE_LIST_CMDLINE
1524     $HAVE_LIST_PUB
1525     $HEADERS_LIST
1526     $INTRINSICS_LIST
1527     $MATH_FUNCS
1528     $SYSTEM_FUNCS
1529     $THREADS_LIST
1530     $TOOLCHAIN_FEATURES
1531     $TYPES_LIST
1532     atomics_native
1533     dos_paths
1534     dxva2_lib
1535     libc_msvcrt
1536     libdc1394_1
1537     libdc1394_2
1538     sdl
1539     threads
1540     vdpau_x11
1541     xlib
1542 "
1543
1544 # options emitted with CONFIG_ prefix but not available on the command line
1545 CONFIG_EXTRA="
1546     aandcttables
1547     ac3dsp
1548     audio_frame_queue
1549     audiodsp
1550     blockdsp
1551     bswapdsp
1552     cabac
1553     dvprofile
1554     faandct
1555     faanidct
1556     fdctdsp
1557     gcrypt
1558     golomb
1559     gplv3
1560     h263dsp
1561     h264chroma
1562     h264dsp
1563     h264pred
1564     h264qpel
1565     hpeldsp
1566     huffman
1567     huffyuvdsp
1568     huffyuvencdsp
1569     idctdsp
1570     iirfilter
1571     intrax8
1572     lgplv3
1573     lpc
1574     me_cmp
1575     mpeg_er
1576     mpegaudio
1577     mpegaudiodsp
1578     mpegvideo
1579     mpegvideoenc
1580     nettle
1581     pixblockdsp
1582     qpeldsp
1583     rangecoder
1584     riffdec
1585     riffenc
1586     rtpdec
1587     rtpenc_chain
1588     sinewin
1589     startcode
1590     tpeldsp
1591     videodsp
1592     vp3dsp
1593     wma_freqs
1594 "
1595
1596 CMDLINE_SELECT="
1597     $ARCH_EXT_LIST
1598     $CONFIG_LIST
1599     $HAVE_LIST_CMDLINE
1600     $THREADS_LIST
1601     asm
1602     cross_compile
1603     debug
1604     extra_warnings
1605     logging
1606     lto
1607     optimizations
1608     rpath
1609 "
1610
1611 PATHS_LIST="
1612     bindir
1613     datadir
1614     docdir
1615     incdir
1616     libdir
1617     mandir
1618     prefix
1619     shlibdir
1620 "
1621
1622 CMDLINE_SET="
1623     $PATHS_LIST
1624     ar
1625     arch
1626     as
1627     build_suffix
1628     cc
1629     cpu
1630     cross_prefix
1631     dep_cc
1632     extra_version
1633     host_cc
1634     host_cflags
1635     host_ld
1636     host_ldflags
1637     host_libs
1638     host_os
1639     ld
1640     logfile
1641     malloc_prefix
1642     nm
1643     optflags
1644     pkg_config
1645     pkg_config_flags
1646     random_seed
1647     samples
1648     sysinclude
1649     sysroot
1650     target_exec
1651     target_os
1652     target_path
1653     target_samples
1654     toolchain
1655 "
1656
1657 CMDLINE_APPEND="
1658     extra_cflags
1659     host_cppflags
1660 "
1661
1662 # code dependency declarations
1663
1664 # architecture extensions
1665
1666 armv5te_deps="arm"
1667 armv6_deps="arm"
1668 armv6t2_deps="arm"
1669 armv8_deps="aarch64"
1670 neon_deps_any="aarch64 arm"
1671 intrinsics_neon_deps="neon"
1672 vfp_deps_any="aarch64 arm"
1673 vfpv3_deps="vfp"
1674
1675 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1676
1677 altivec_deps="ppc"
1678 ppc4xx_deps="ppc"
1679
1680 cpunop_deps="i686"
1681 x86_64_select="i686"
1682 x86_64_suggest="fast_cmov"
1683
1684 amd3dnow_deps="mmx"
1685 amd3dnowext_deps="amd3dnow"
1686 i686_deps="x86"
1687 mmx_deps="x86"
1688 mmxext_deps="mmx"
1689 sse_deps="mmxext"
1690 sse2_deps="sse"
1691 sse3_deps="sse2"
1692 ssse3_deps="sse3"
1693 sse4_deps="ssse3"
1694 sse42_deps="sse4"
1695 avx_deps="sse42"
1696 xop_deps="avx"
1697 fma3_deps="avx"
1698 fma4_deps="avx"
1699 avx2_deps="avx"
1700
1701 mmx_external_deps="yasm"
1702 mmx_inline_deps="inline_asm"
1703 mmx_suggest="mmx_external mmx_inline"
1704
1705 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1706     eval dep=\$${ext}_deps
1707     eval ${ext}_external_deps='"${dep}_external"'
1708     eval ${ext}_inline_deps='"${dep}_inline"'
1709     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1710 done
1711
1712 aligned_stack_if_any="aarch64 ppc x86"
1713 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1714 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1715 fast_unaligned_if_any="aarch64 ppc x86"
1716 simd_align_16_if_any="altivec neon sse"
1717
1718 # system capabilities
1719 log2_deps="!libc_msvcrt"
1720
1721 symver_if_any="symver_asm_label symver_gnu_asm"
1722
1723 # threading support
1724 atomics_gcc_if="sync_val_compare_and_swap"
1725 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1726 atomics_win32_if="MemoryBarrier"
1727 atomics_native_if_any="$ATOMICS_LIST"
1728 w32threads_deps="atomics_native"
1729 threads_if_any="$THREADS_LIST"
1730
1731 # subsystems
1732 dct_select="rdft"
1733 error_resilience_select="me_cmp"
1734 faandct_deps="faan fdctdsp"
1735 faanidct_deps="faan idctdsp"
1736 intrax8_select="error_resilience"
1737 mdct_select="fft"
1738 rdft_select="fft"
1739 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1740 mpeg_er_select="error_resilience"
1741 mpegaudio_select="mpegaudiodsp"
1742 mpegaudiodsp_select="dct"
1743 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1744 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1745
1746 # decoders / encoders
1747 aac_decoder_select="mdct sinewin"
1748 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1749 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1750 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1751 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1752 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1753 aic_decoder_select="golomb idctdsp"
1754 alac_encoder_select="lpc"
1755 als_decoder_select="bswapdsp"
1756 amrnb_decoder_select="lsp"
1757 amrwb_decoder_select="lsp"
1758 amv_decoder_select="sp5x_decoder"
1759 ape_decoder_select="bswapdsp"
1760 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1761 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1762 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1763 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1764 atrac1_decoder_select="mdct sinewin"
1765 atrac3_decoder_select="mdct"
1766 atrac3p_decoder_select="mdct sinewin"
1767 bink_decoder_select="blockdsp hpeldsp"
1768 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1769 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1770 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1771 cllc_decoder_select="bswapdsp"
1772 comfortnoise_encoder_select="lpc"
1773 cook_decoder_select="audiodsp mdct sinewin"
1774 cscd_decoder_select="lzo"
1775 cscd_decoder_suggest="zlib"
1776 dca_decoder_select="mdct"
1777 dnxhd_decoder_select="blockdsp idctdsp"
1778 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1779 dvvideo_decoder_select="dvprofile idctdsp"
1780 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1781 dxa_decoder_deps="zlib"
1782 eac3_decoder_select="ac3_decoder"
1783 eac3_encoder_select="ac3_encoder"
1784 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1785 eatgq_decoder_select="aandcttables idctdsp"
1786 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1787 exr_decoder_deps="zlib"
1788 ffv1_decoder_select="golomb rangecoder"
1789 ffv1_encoder_select="rangecoder"
1790 ffvhuff_decoder_select="huffyuv_decoder"
1791 ffvhuff_encoder_select="huffyuv_encoder"
1792 fic_decoder_select="golomb"
1793 flac_decoder_select="golomb"
1794 flac_encoder_select="bswapdsp golomb lpc"
1795 flashsv_decoder_deps="zlib"
1796 flashsv_encoder_deps="zlib"
1797 flashsv2_decoder_deps="zlib"
1798 flv_decoder_select="h263_decoder"
1799 flv_encoder_select="h263_encoder"
1800 fourxm_decoder_select="blockdsp bswapdsp"
1801 fraps_decoder_select="bswapdsp huffman"
1802 g2m_decoder_deps="zlib"
1803 g2m_decoder_select="blockdsp idctdsp"
1804 h261_decoder_select="mpeg_er mpegvideo"
1805 h261_encoder_select="aandcttables mpegvideoenc"
1806 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1807 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1808 h263i_decoder_select="h263_decoder"
1809 h263p_encoder_select="h263_encoder"
1810 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1811 h264_decoder_suggest="error_resilience"
1812 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1813 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1814 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1815 iac_decoder_select="imc_decoder"
1816 imc_decoder_select="bswapdsp fft mdct sinewin"
1817 indeo3_decoder_select="hpeldsp"
1818 interplay_video_decoder_select="hpeldsp"
1819 jpegls_decoder_select="golomb mjpeg_decoder"
1820 jpegls_encoder_select="golomb"
1821 jv_decoder_select="blockdsp"
1822 lagarith_decoder_select="huffyuvdsp"
1823 ljpeg_encoder_select="aandcttables idctdsp"
1824 loco_decoder_select="golomb"
1825 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1826 metasound_decoder_select="lsp mdct sinewin"
1827 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1828 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1829 mjpeg_encoder_select="aandcttables mpegvideoenc"
1830 mjpegb_decoder_select="mjpeg_decoder"
1831 mlp_decoder_select="mlp_parser"
1832 motionpixels_decoder_select="bswapdsp"
1833 mp1_decoder_select="mpegaudio"
1834 mp1float_decoder_select="mpegaudio"
1835 mp2_decoder_select="mpegaudio"
1836 mp2float_decoder_select="mpegaudio"
1837 mp3_decoder_select="mpegaudio"
1838 mp3adu_decoder_select="mpegaudio"
1839 mp3adufloat_decoder_select="mpegaudio"
1840 mp3float_decoder_select="mpegaudio"
1841 mp3on4_decoder_select="mpegaudio"
1842 mp3on4float_decoder_select="mpegaudio"
1843 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1844 mpc8_decoder_select="mpegaudiodsp"
1845 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1846 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1847 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1848 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1849 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1850 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1851 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1852 mpeg4_encoder_select="h263_encoder"
1853 msmpeg4v1_decoder_select="h263_decoder"
1854 msmpeg4v2_decoder_select="h263_decoder"
1855 msmpeg4v2_encoder_select="h263_encoder"
1856 msmpeg4v3_decoder_select="h263_decoder"
1857 msmpeg4v3_encoder_select="h263_encoder"
1858 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1859 mxpeg_decoder_select="mjpeg_decoder"
1860 nellymoser_decoder_select="mdct sinewin"
1861 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1862 nuv_decoder_select="idctdsp lzo"
1863 on2avc_decoder_select="mdct"
1864 opus_decoder_deps="avresample"
1865 png_decoder_deps="zlib"
1866 png_encoder_deps="zlib"
1867 png_encoder_select="huffyuvencdsp"
1868 prores_decoder_select="idctdsp"
1869 prores_encoder_select="fdctdsp"
1870 qcelp_decoder_select="lsp"
1871 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1872 ra_144_encoder_select="audio_frame_queue lpc"
1873 ralf_decoder_select="golomb"
1874 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1875 rv10_encoder_select="h263_encoder"
1876 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1877 rv20_encoder_select="h263_encoder"
1878 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1879 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1880 shorten_decoder_select="golomb"
1881 sipr_decoder_select="lsp"
1882 sp5x_decoder_select="mjpeg_decoder"
1883 svq1_decoder_select="hpeldsp"
1884 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1885 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1886 svq3_decoder_suggest="zlib"
1887 tak_decoder_select="audiodsp"
1888 theora_decoder_select="vp3_decoder"
1889 thp_decoder_select="mjpeg_decoder"
1890 tiff_decoder_suggest="zlib"
1891 tiff_encoder_suggest="zlib"
1892 truehd_decoder_select="mlp_decoder"
1893 truemotion2_decoder_select="bswapdsp"
1894 truespeech_decoder_select="bswapdsp"
1895 tscc_decoder_deps="zlib"
1896 twinvq_decoder_select="mdct lsp sinewin"
1897 utvideo_decoder_select="bswapdsp"
1898 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1899 vble_decoder_select="huffyuvdsp"
1900 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1901 vc1image_decoder_select="vc1_decoder"
1902 vorbis_decoder_select="mdct"
1903 vorbis_encoder_select="mdct"
1904 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1905 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1906 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1907 vp6a_decoder_select="vp6_decoder"
1908 vp6f_decoder_select="vp6_decoder"
1909 vp7_decoder_select="h264pred videodsp"
1910 vp8_decoder_select="h264pred videodsp"
1911 vp9_decoder_select="videodsp"
1912 webp_decoder_select="vp8_decoder"
1913 wmapro_decoder_select="mdct sinewin wma_freqs"
1914 wmav1_decoder_select="mdct sinewin wma_freqs"
1915 wmav1_encoder_select="mdct sinewin wma_freqs"
1916 wmav2_decoder_select="mdct sinewin wma_freqs"
1917 wmav2_encoder_select="mdct sinewin wma_freqs"
1918 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1919 wmv1_decoder_select="h263_decoder"
1920 wmv1_encoder_select="h263_encoder"
1921 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1922 wmv2_encoder_select="h263_encoder"
1923 wmv3_decoder_select="vc1_decoder"
1924 wmv3image_decoder_select="wmv3_decoder"
1925 zerocodec_decoder_deps="zlib"
1926 zlib_decoder_deps="zlib"
1927 zlib_encoder_deps="zlib"
1928 zmbv_decoder_deps="zlib"
1929 zmbv_encoder_deps="zlib"
1930
1931 # hardware accelerators
1932 dxva2_deps="dxva2api_h"
1933 vaapi_deps="va_va_h"
1934 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1935 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1936 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1937
1938 h263_vaapi_hwaccel_deps="vaapi"
1939 h263_vaapi_hwaccel_select="h263_decoder"
1940 h263_vdpau_hwaccel_deps="vdpau"
1941 h263_vdpau_hwaccel_select="h263_decoder"
1942 h264_dxva2_hwaccel_deps="dxva2"
1943 h264_dxva2_hwaccel_select="h264_decoder"
1944 h264_vaapi_hwaccel_deps="vaapi"
1945 h264_vaapi_hwaccel_select="h264_decoder"
1946 h264_vda_hwaccel_deps="vda"
1947 h264_vda_hwaccel_select="h264_decoder"
1948 h264_vda_old_hwaccel_deps="vda"
1949 h264_vda_old_hwaccel_select="h264_decoder"
1950 h264_vdpau_hwaccel_deps="vdpau"
1951 h264_vdpau_hwaccel_select="h264_decoder"
1952 mpeg1_vdpau_hwaccel_deps="vdpau"
1953 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1954 mpeg2_dxva2_hwaccel_deps="dxva2"
1955 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1956 mpeg2_vaapi_hwaccel_deps="vaapi"
1957 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1958 mpeg2_vdpau_hwaccel_deps="vdpau"
1959 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1960 mpeg4_vaapi_hwaccel_deps="vaapi"
1961 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1962 mpeg4_vdpau_hwaccel_deps="vdpau"
1963 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1964 vc1_dxva2_hwaccel_deps="dxva2"
1965 vc1_dxva2_hwaccel_select="vc1_decoder"
1966 vc1_vaapi_hwaccel_deps="vaapi"
1967 vc1_vaapi_hwaccel_select="vc1_decoder"
1968 vc1_vdpau_hwaccel_deps="vdpau"
1969 vc1_vdpau_hwaccel_select="vc1_decoder"
1970 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1971 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1972 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1973
1974 # parsers
1975 h264_parser_select="h264_decoder"
1976 mpegvideo_parser_select="mpegvideo"
1977 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1978 vc1_parser_select="mpegvideo startcode"
1979
1980 # external libraries
1981 libfaac_encoder_deps="libfaac"
1982 libfaac_encoder_select="audio_frame_queue"
1983 libfdk_aac_decoder_deps="libfdk_aac"
1984 libfdk_aac_encoder_deps="libfdk_aac"
1985 libfdk_aac_encoder_select="audio_frame_queue"
1986 libgsm_decoder_deps="libgsm"
1987 libgsm_encoder_deps="libgsm"
1988 libgsm_ms_decoder_deps="libgsm"
1989 libgsm_ms_encoder_deps="libgsm"
1990 libilbc_decoder_deps="libilbc"
1991 libilbc_encoder_deps="libilbc"
1992 libmp3lame_encoder_deps="libmp3lame"
1993 libmp3lame_encoder_select="audio_frame_queue"
1994 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1995 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1996 libopencore_amrnb_encoder_select="audio_frame_queue"
1997 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1998 libopenjpeg_decoder_deps="libopenjpeg"
1999 libopenjpeg_encoder_deps="libopenjpeg"
2000 libopus_decoder_deps="libopus"
2001 libopus_encoder_deps="libopus"
2002 libopus_encoder_select="audio_frame_queue"
2003 libschroedinger_decoder_deps="libschroedinger"
2004 libschroedinger_encoder_deps="libschroedinger"
2005 libspeex_decoder_deps="libspeex"
2006 libspeex_encoder_deps="libspeex"
2007 libspeex_encoder_select="audio_frame_queue"
2008 libtheora_encoder_deps="libtheora"
2009 libtwolame_encoder_deps="libtwolame"
2010 libvo_aacenc_encoder_deps="libvo_aacenc"
2011 libvo_aacenc_encoder_select="audio_frame_queue"
2012 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2013 libvorbis_encoder_deps="libvorbis"
2014 libvorbis_encoder_select="audio_frame_queue"
2015 libvpx_vp8_decoder_deps="libvpx"
2016 libvpx_vp8_encoder_deps="libvpx"
2017 libvpx_vp9_decoder_deps="libvpx"
2018 libvpx_vp9_encoder_deps="libvpx"
2019 libwavpack_encoder_deps="libwavpack"
2020 libwebp_encoder_deps="libwebp"
2021 libx264_encoder_deps="libx264"
2022 libx265_encoder_deps="libx265"
2023 libxavs_encoder_deps="libxavs"
2024 libxvid_encoder_deps="libxvid"
2025
2026 # demuxers / muxers
2027 ac3_demuxer_select="ac3_parser"
2028 asf_demuxer_select="riffdec"
2029 asf_muxer_select="riffenc"
2030 asf_stream_muxer_select="asf_muxer"
2031 avi_demuxer_select="riffdec"
2032 avi_muxer_select="riffenc"
2033 avisynth_demuxer_deps="avisynth"
2034 avisynth_demuxer_select="riffdec"
2035 caf_demuxer_select="riffdec"
2036 dirac_demuxer_select="dirac_parser"
2037 dv_demuxer_select="dvprofile"
2038 dv_muxer_select="dvprofile"
2039 dxa_demuxer_select="riffdec"
2040 eac3_demuxer_select="ac3_parser"
2041 f4v_muxer_select="mov_muxer"
2042 flac_demuxer_select="flac_parser"
2043 hds_muxer_select="flv_muxer"
2044 hls_muxer_select="mpegts_muxer"
2045 ipod_muxer_select="mov_muxer"
2046 ismv_muxer_select="mov_muxer"
2047 matroska_audio_muxer_select="matroska_muxer"
2048 matroska_demuxer_select="riffdec"
2049 matroska_demuxer_suggest="bzlib lzo zlib"
2050 matroska_muxer_select="riffenc"
2051 mmf_muxer_select="riffenc"
2052 mov_demuxer_select="riffdec"
2053 mov_demuxer_suggest="zlib"
2054 mov_muxer_select="riffenc rtpenc_chain"
2055 mp3_demuxer_select="mpegaudio_parser"
2056 mp4_muxer_select="mov_muxer"
2057 mpegts_muxer_select="adts_muxer latm_muxer"
2058 mpegtsraw_demuxer_select="mpegts_demuxer"
2059 mxf_d10_muxer_select="mxf_muxer"
2060 nut_muxer_select="riffenc"
2061 nuv_demuxer_select="riffdec"
2062 oga_muxer_select="ogg_muxer"
2063 ogg_demuxer_select="golomb"
2064 opus_muxer_select="ogg_muxer"
2065 psp_muxer_select="mov_muxer"
2066 rtp_demuxer_select="sdp_demuxer"
2067 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2068 rtsp_demuxer_select="http_protocol rtpdec"
2069 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2070 sap_demuxer_select="sdp_demuxer"
2071 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2072 sdp_demuxer_select="rtpdec"
2073 smoothstreaming_muxer_select="ismv_muxer"
2074 spdif_muxer_select="aac_parser"
2075 spx_muxer_select="ogg_muxer"
2076 tak_demuxer_select="tak_parser"
2077 tg2_muxer_select="mov_muxer"
2078 tgp_muxer_select="mov_muxer"
2079 w64_demuxer_select="wav_demuxer"
2080 wav_demuxer_select="riffdec"
2081 wav_muxer_select="riffenc"
2082 webm_muxer_select="riffenc"
2083 wtv_demuxer_select="riffdec"
2084 xmv_demuxer_select="riffdec"
2085 xwma_demuxer_select="riffdec"
2086
2087 # indevs / outdevs
2088 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2089 alsa_outdev_deps="alsa_asoundlib_h"
2090 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2091 dv1394_indev_deps="dv1394"
2092 dv1394_indev_select="dv_demuxer"
2093 fbdev_indev_deps="linux_fb_h"
2094 jack_indev_deps="jack_jack_h pthreads"
2095 libcdio_indev_deps="libcdio"
2096 libdc1394_indev_deps="libdc1394"
2097 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2098 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2099 pulse_indev_deps="libpulse"
2100 sndio_indev_deps="sndio_h"
2101 sndio_outdev_deps="sndio_h"
2102 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2103 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2104 vfwcap_indev_extralibs="-lavicap32"
2105 x11grab_indev_deps="x11grab XShmCreateImage"
2106
2107 # protocols
2108 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2109 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2110 ffrtmpcrypt_protocol_select="tcp_protocol"
2111 ffrtmphttp_protocol_deps="!librtmp_protocol"
2112 ffrtmphttp_protocol_select="http_protocol"
2113 gopher_protocol_select="network"
2114 http_protocol_select="tcp_protocol"
2115 httpproxy_protocol_select="tcp_protocol"
2116 https_protocol_select="tls_protocol"
2117 icecast_protocol_select="http_protocol"
2118 librtmp_protocol_deps="librtmp"
2119 librtmpe_protocol_deps="librtmp"
2120 librtmps_protocol_deps="librtmp"
2121 librtmpt_protocol_deps="librtmp"
2122 librtmpte_protocol_deps="librtmp"
2123 mmsh_protocol_select="http_protocol"
2124 mmst_protocol_select="network"
2125 rtmp_protocol_deps="!librtmp_protocol"
2126 rtmp_protocol_select="tcp_protocol"
2127 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2128 rtmps_protocol_deps="!librtmp_protocol"
2129 rtmps_protocol_select="tls_protocol"
2130 rtmpt_protocol_select="ffrtmphttp_protocol"
2131 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2132 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2133 rtp_protocol_select="udp_protocol"
2134 sctp_protocol_deps="struct_sctp_event_subscribe"
2135 sctp_protocol_select="network"
2136 srtp_protocol_select="rtp_protocol"
2137 tcp_protocol_select="network"
2138 tls_protocol_deps_any="openssl gnutls"
2139 tls_protocol_select="tcp_protocol"
2140 udp_protocol_select="network"
2141 unix_protocol_deps="sys_un_h"
2142 unix_protocol_select="network"
2143
2144 # filters
2145 blackframe_filter_deps="gpl"
2146 boxblur_filter_deps="gpl"
2147 bs2b_filter_deps="libbs2b"
2148 cropdetect_filter_deps="gpl"
2149 delogo_filter_deps="gpl"
2150 drawtext_filter_deps="libfreetype"
2151 frei0r_filter_deps="frei0r dlopen"
2152 frei0r_filter_extralibs='$ldl'
2153 frei0r_src_filter_deps="frei0r dlopen"
2154 frei0r_src_filter_extralibs='$ldl'
2155 hqdn3d_filter_deps="gpl"
2156 interlace_filter_deps="gpl"
2157 ocv_filter_deps="libopencv"
2158 resample_filter_deps="avresample"
2159 scale_filter_deps="swscale"
2160
2161 # examples
2162 avcodec_example_deps="avcodec avutil"
2163 filter_audio_example_deps="avfilter avutil"
2164 metadata_example_deps="avformat avutil"
2165 output_example_deps="avcodec avformat avutil swscale"
2166 transcode_aac_example_deps="avcodec avformat avresample"
2167
2168 # libraries, in linking order
2169 avcodec_deps="avutil"
2170 avdevice_deps="avformat avcodec avutil"
2171 avfilter_deps="avutil"
2172 avformat_deps="avcodec avutil"
2173 avresample_deps="avutil"
2174 swscale_deps="avutil"
2175
2176 # programs
2177 avconv_deps="avcodec avfilter avformat avresample swscale"
2178 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2179                fps_filter null_filter resample_filter scale_filter
2180                setpts_filter trim_filter"
2181 avplay_deps="avcodec avformat avresample swscale sdl"
2182 avplay_libs='$sdl_libs'
2183 avplay_select="rdft"
2184 avprobe_deps="avcodec avformat"
2185
2186 # documentation
2187 pod2man_deps="doc"
2188 texi2html_deps="doc"
2189
2190 # default parameters
2191
2192 logfile="config.log"
2193
2194 # installation paths
2195 prefix_default="/usr/local"
2196 bindir_default='${prefix}/bin'
2197 datadir_default='${prefix}/share/avconv'
2198 docdir_default='${prefix}/share/doc/libav'
2199 incdir_default='${prefix}/include'
2200 libdir_default='${prefix}/lib'
2201 mandir_default='${prefix}/share/man'
2202 shlibdir_default="$libdir_default"
2203
2204 # toolchain
2205 ar_default="ar"
2206 cc_default="gcc"
2207 host_cc_default="gcc"
2208 cp_f="cp -f"
2209 ln_s="ln -s -f"
2210 nm_default="nm -g"
2211 objformat="elf"
2212 pkg_config_default=pkg-config
2213 ranlib="ranlib"
2214 strip="strip"
2215 yasmexe="yasm"
2216
2217 # machine
2218 arch_default=$(uname -m)
2219 cpu="generic"
2220 intrinsics="none"
2221
2222 # OS
2223 target_os_default=$(tolower $(uname -s))
2224 host_os=$target_os_default
2225
2226 # configurable options
2227 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2228
2229 enable asm
2230 enable debug
2231 enable doc
2232 enable faan faandct faanidct
2233 enable optimizations
2234 enable safe_bitstream_reader
2235 enable static
2236 enable swscale_alpha
2237
2238 # By default, enable only those hwaccels that have no external dependencies.
2239 enable dxva2 vdpau
2240
2241 # build settings
2242 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2243 LIBPREF="lib"
2244 LIBSUF=".a"
2245 FULLNAME='$(NAME)$(BUILDSUF)'
2246 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2247 SLIBPREF="lib"
2248 SLIBSUF=".so"
2249 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2250 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2251 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2252 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2253 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2254 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2255
2256 asflags_filter=echo
2257 cflags_filter=echo
2258 ldflags_filter=echo
2259
2260 AS_C='-c'
2261 AS_O='-o $@'
2262 CC_C='-c'
2263 CC_E='-E -o $@'
2264 CC_O='-o $@'
2265 LD_O='-o $@'
2266 LD_LIB='-l%'
2267 LD_PATH='-L'
2268 HOSTCC_C='-c'
2269 HOSTCC_E='-E -o $@'
2270 HOSTCC_O='-o $@'
2271 HOSTLD_O='-o $@'
2272
2273 host_libs='-lm'
2274 host_cflags_filter=echo
2275 host_ldflags_filter=echo
2276
2277 target_path='$(CURDIR)'
2278
2279 # since the object filename is not given with the -MM flag, the compiler
2280 # is only able to print the basename, and we must add the path ourselves
2281 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2282 DEPFLAGS='-MM'
2283
2284 # find source path
2285 if test -f configure; then
2286     source_path=.
2287 else
2288     source_path=$(cd $(dirname "$0"); pwd)
2289     echo "$source_path" | grep -q '[[:blank:]]' &&
2290         die "Out of tree builds are impossible with whitespace in source path."
2291     test -e "$source_path/config.h" &&
2292         die "Out of tree builds are impossible with config.h in source dir."
2293 fi
2294
2295 for v in "$@"; do
2296     r=${v#*=}
2297     l=${v%"$r"}
2298     r=$(sh_quote "$r")
2299     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2300 done
2301
2302 find_things(){
2303     thing=$1
2304     pattern=$2
2305     file=$source_path/$3
2306     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2307 }
2308
2309 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2310 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2311 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2312 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2313 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2314 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2315 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2316 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2317 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2318 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2319 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2320
2321 ALL_COMPONENTS="
2322     $BSF_LIST
2323     $DECODER_LIST
2324     $DEMUXER_LIST
2325     $ENCODER_LIST
2326     $FILTER_LIST
2327     $HWACCEL_LIST
2328     $INDEV_LIST
2329     $MUXER_LIST
2330     $OUTDEV_LIST
2331     $PARSER_LIST
2332     $PROTOCOL_LIST
2333 "
2334
2335 for n in $COMPONENT_LIST; do
2336     v=$(toupper ${n%s})_LIST
2337     eval enable \$$v
2338     eval ${n}_if_any="\$$v"
2339 done
2340
2341 enable $ARCH_EXT_LIST
2342
2343 die_unknown(){
2344     echo "Unknown option \"$1\"."
2345     echo "See $0 --help for available options."
2346     exit 1
2347 }
2348
2349 print_3_columns() {
2350     cat | tr ' ' '\n' | sort | pr -r -3 -t
2351 }
2352
2353 show_list() {
2354     suffix=_$1
2355     shift
2356     echo $* | sed s/$suffix//g | print_3_columns
2357     exit 0
2358 }
2359
2360 rand_list(){
2361     IFS=', '
2362     set -- $*
2363     unset IFS
2364     for thing; do
2365         comp=${thing%:*}
2366         prob=${thing#$comp}
2367         prob=${prob#:}
2368         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2369         echo "prob ${prob:-0.5}"
2370         printf '%s\n' $comp
2371     done
2372 }
2373
2374 do_random(){
2375     action=$1
2376     shift
2377     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2378     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2379 }
2380
2381 for opt do
2382     optval="${opt#*=}"
2383     case "$opt" in
2384         --extra-ldflags=*)
2385             add_ldflags $optval
2386         ;;
2387         --extra-ldexeflags=*)
2388             add_ldexeflags $optval
2389         ;;
2390         --extra-libs=*)
2391             add_extralibs $optval
2392         ;;
2393         --disable-devices)
2394             disable $INDEV_LIST $OUTDEV_LIST
2395         ;;
2396         --enable-debug=*)
2397             debuglevel="$optval"
2398         ;;
2399         --disable-programs)
2400             disable $PROGRAM_LIST
2401         ;;
2402         --disable-everything)
2403             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2404         ;;
2405         --disable-all)
2406             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2407             disable $LIBRARY_LIST $PROGRAM_LIST doc
2408         ;;
2409         --enable-random|--disable-random)
2410             action=${opt%%-random}
2411             do_random ${action#--} $COMPONENT_LIST
2412         ;;
2413         --enable-random=*|--disable-random=*)
2414             action=${opt%%-random=*}
2415             do_random ${action#--} $optval
2416         ;;
2417         --enable-*=*|--disable-*=*)
2418             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2419             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2420             eval list=\$$(toupper $thing)_LIST
2421             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2422             $action $(filter "$name" $list)
2423         ;;
2424         --enable-avserver|--disable-avserver*)
2425             warn "avserver has been removed, the ${opt} option is only"\
2426                  "provided for compatibility and will be removed in the future"
2427         ;;
2428         --enable-?*|--disable-?*)
2429             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2430             if is_in $option $COMPONENT_LIST; then
2431                 test $action = disable && action=unset
2432                 eval $action \$$(toupper ${option%s})_LIST
2433             elif is_in $option $CMDLINE_SELECT; then
2434                 $action $option
2435             else
2436                 die_unknown $opt
2437             fi
2438         ;;
2439         --list-*)
2440             NAME="${opt#--list-}"
2441             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2442             NAME=${NAME%s}
2443             eval show_list $NAME \$$(toupper $NAME)_LIST
2444         ;;
2445         --help|-h) show_help
2446         ;;
2447         *)
2448             optname="${opt%%=*}"
2449             optname="${optname#--}"
2450             optname=$(echo "$optname" | sed 's/-/_/g')
2451             if is_in $optname $CMDLINE_SET; then
2452                 eval $optname='$optval'
2453             elif is_in $optname $CMDLINE_APPEND; then
2454                 append $optname "$optval"
2455             else
2456                 die_unknown $opt
2457             fi
2458         ;;
2459     esac
2460 done
2461
2462 disabled logging && logfile=/dev/null
2463
2464 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2465 set >> $logfile
2466
2467 test -n "$cross_prefix" && enable cross_compile
2468
2469 if enabled cross_compile; then
2470     test -n "$arch" && test -n "$target_os" ||
2471         die "Must specify target arch and OS when cross-compiling"
2472 fi
2473
2474 ar_default="${cross_prefix}${ar_default}"
2475 cc_default="${cross_prefix}${cc_default}"
2476 nm_default="${cross_prefix}${nm_default}"
2477 pkg_config_default="${cross_prefix}${pkg_config_default}"
2478 ranlib="${cross_prefix}${ranlib}"
2479 strip="${cross_prefix}${strip}"
2480
2481 sysinclude_default="${sysroot}/usr/include"
2482
2483 case "$toolchain" in
2484     clang-asan)
2485         cc_default="clang"
2486         add_cflags  -fsanitize=address
2487         add_ldflags -fsanitize=address
2488     ;;
2489     clang-tsan)
2490         cc_default="clang"
2491         add_cflags  -fsanitize=thread -pie
2492         add_ldflags -fsanitize=thread -pie
2493     ;;
2494     clang-usan)
2495         cc_default="clang"
2496         add_cflags  -fsanitize=undefined -O1
2497         add_ldflags -fsanitize=undefined
2498     ;;
2499     gcc-asan)
2500         cc_default="gcc"
2501         add_cflags  -fsanitize=address
2502         add_ldflags -fsanitize=address
2503     ;;
2504     gcc-tsan)
2505         cc_default="gcc"
2506         add_cflags  -fsanitize=thread -pie -fPIC
2507         add_ldflags -fsanitize=thread -pie -fPIC
2508     ;;
2509     gcc-usan)
2510         cc_default="gcc"
2511         add_cflags  -fsanitize=undefined
2512         add_ldflags -fsanitize=undefined
2513     ;;
2514     valgrind-massif)
2515         target_exec_default="valgrind"
2516         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2517     ;;
2518     valgrind-memcheck)
2519         target_exec_default="valgrind"
2520         target_exec_args="--track-origins=yes --leak-check=full"
2521     ;;
2522     msvc)
2523         # Check whether the current MSVC version needs the C99 converter.
2524         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2525         # support enough of C99 to build libav. Default to the new
2526         # behaviour if the regexp was unable to match anything, since this
2527         # successfully parses the version number of existing supported
2528         # versions that require the converter (MSVC 2010 and 2012).
2529         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2530         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2531             cc_default="cl"
2532         else
2533             cc_default="c99wrap cl"
2534         fi
2535         ld_default="link"
2536         nm_default="dumpbin -symbols"
2537         ar_default="lib"
2538         target_os_default="win32"
2539         # Use a relative path for TMPDIR. This makes sure all the
2540         # ffconf temp files are written with a relative path, avoiding
2541         # issues with msys/win32 path conversion for MSVC parameters
2542         # such as -Fo<file> or -out:<file>.
2543         TMPDIR=.
2544     ;;
2545     icl)
2546         cc_default="icl"
2547         ld_default="xilink"
2548         nm_default="dumpbin -symbols"
2549         ar_default="xilib"
2550         target_os_default="win32"
2551         TMPDIR=.
2552     ;;
2553     gcov)
2554         add_cflags  -fprofile-arcs -ftest-coverage
2555         add_ldflags -fprofile-arcs -ftest-coverage
2556     ;;
2557     hardened)
2558         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2559         add_cflags   -fno-strict-overflow -fstack-protector-all
2560         add_ldflags  -Wl,-z,relro -Wl,-z,now
2561     ;;
2562     ?*)
2563         die "Unknown toolchain $toolchain"
2564     ;;
2565 esac
2566
2567 set_default arch cc pkg_config sysinclude target_exec target_os
2568 enabled cross_compile || host_cc_default=$cc
2569 set_default host_cc
2570
2571 if ! $pkg_config --version >/dev/null 2>&1; then
2572     warn "$pkg_config not found, library detection may fail."
2573     pkg_config=false
2574 fi
2575
2576 exesuf() {
2577     case $1 in
2578         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2579     esac
2580 }
2581
2582 EXESUF=$(exesuf $target_os)
2583 HOSTEXESUF=$(exesuf $host_os)
2584
2585 # set temporary file name
2586 : ${TMPDIR:=$TEMPDIR}
2587 : ${TMPDIR:=$TMP}
2588 : ${TMPDIR:=/tmp}
2589
2590 if ! check_cmd mktemp -u XXXXXX; then
2591     # simple replacement for missing mktemp
2592     # NOT SAFE FOR GENERAL USE
2593     mktemp(){
2594         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2595     }
2596 fi
2597
2598 tmpfile(){
2599     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2600         (set -C; exec > $tmp) 2>/dev/null ||
2601         die "Unable to create temporary file in $TMPDIR."
2602     append TMPFILES $tmp
2603     eval $1=$tmp
2604 }
2605
2606 trap 'rm -f -- $TMPFILES' EXIT
2607
2608 tmpfile TMPASM .asm
2609 tmpfile TMPC   .c
2610 tmpfile TMPE   $EXESUF
2611 tmpfile TMPH   .h
2612 tmpfile TMPO   .o
2613 tmpfile TMPS   .S
2614 tmpfile TMPSH  .sh
2615 tmpfile TMPV   .ver
2616
2617 unset -f mktemp
2618
2619 chmod +x $TMPE
2620
2621 # make sure we can execute files in $TMPDIR
2622 cat > $TMPSH 2>> $logfile <<EOF
2623 #! /bin/sh
2624 EOF
2625 chmod +x $TMPSH >> $logfile 2>&1
2626 if ! $TMPSH >> $logfile 2>&1; then
2627     cat <<EOF
2628 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2629 variable to another directory and make sure that it is not mounted noexec.
2630 EOF
2631     die "Sanity test failed."
2632 fi
2633
2634 armasm_flags(){
2635     for flag; do
2636         case $flag in
2637             # Filter out MSVC cl.exe options from cflags that shouldn't
2638             # be passed to gas-preprocessor
2639             -M[TD]*)                                            ;;
2640             *)                  echo $flag                      ;;
2641         esac
2642    done
2643 }
2644
2645 ccc_flags(){
2646     for flag; do
2647         case $flag in
2648             -std=c99)           echo -c99                       ;;
2649             -mcpu=*)            echo -arch ${flag#*=}           ;;
2650             -mieee)             echo -ieee                      ;;
2651             -O*|-fast)          echo $flag                      ;;
2652             -fno-math-errno)    echo -assume nomath_errno       ;;
2653             -g)                 echo -g3                        ;;
2654             -Wall)              echo -msg_enable level2         ;;
2655             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2656             -Wl,*)              echo $flag                      ;;
2657             -f*|-W*)                                            ;;
2658             *)                  echo $flag                      ;;
2659         esac
2660    done
2661 }
2662
2663 cparser_flags(){
2664     for flag; do
2665         case $flag in
2666             -Wno-switch)             echo -Wno-switch-enum ;;
2667             -Wno-format-zero-length) ;;
2668             -Wdisabled-optimization) ;;
2669             -Wno-pointer-sign)       echo -Wno-other ;;
2670             *)                       echo $flag ;;
2671         esac
2672     done
2673 }
2674
2675 msvc_common_flags(){
2676     for flag; do
2677         case $flag in
2678             # In addition to specifying certain flags under the compiler
2679             # specific filters, they must be specified here as well or else the
2680             # generic catch all at the bottom will print the original flag.
2681             -Wall)                ;;
2682             -std=c99)             ;;
2683             # Common flags
2684             -fomit-frame-pointer) ;;
2685             -g)                   echo -Z7 ;;
2686             -fno-math-errno)      ;;
2687             -fno-common)          ;;
2688             -fno-signed-zeros)    ;;
2689             -fPIC)                ;;
2690             -mthumb)              ;;
2691             -march=*)             ;;
2692             -lz)                  echo zlib.lib ;;
2693             -lavifil32)           echo vfw32.lib ;;
2694             -lavicap32)           echo vfw32.lib user32.lib ;;
2695             -l*)                  echo ${flag#-l}.lib ;;
2696             *)                    echo $flag ;;
2697         esac
2698     done
2699 }
2700
2701 msvc_flags(){
2702     msvc_common_flags "$@"
2703     for flag; do
2704         case $flag in
2705             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2706                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2707                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2708                                        -wd4273 -wd4701 ;;
2709         esac
2710     done
2711 }
2712
2713 icl_flags(){
2714     msvc_common_flags "$@"
2715     for flag; do
2716         case $flag in
2717             # Despite what Intel's documentation says -Wall, which is supported
2718             # on Windows, does enable remarks so disable them here.
2719             -Wall)                echo $flag -Qdiag-disable:remark ;;
2720             -std=c99)             echo -Qstd=c99 ;;
2721         esac
2722     done
2723 }
2724
2725 pgi_flags(){
2726     for flag; do
2727         case $flag in
2728             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2729             -fomit-frame-pointer) echo -Mnoframe ;;
2730             -g)                   echo -gopt ;;
2731             *)                    echo $flag ;;
2732         esac
2733     done
2734 }
2735
2736 suncc_flags(){
2737     for flag; do
2738         case $flag in
2739             -march=*|-mcpu=*)
2740                 case "${flag#*=}" in
2741                     native)                   echo -xtarget=native       ;;
2742                     v9|niagara)               echo -xarch=sparc          ;;
2743                     ultrasparc)               echo -xarch=sparcvis       ;;
2744                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2745                     i586|pentium)             echo -xchip=pentium        ;;
2746                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2747                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2748                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2749                     pentium4*)          echo -xtarget=pentium4           ;;
2750                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2751                     *-sse3)             echo -xarch=sse3                 ;;
2752                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2753                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2754                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2755                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2756                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2757                     k8|opteron|athlon64|athlon-fx)
2758                                                echo -xarch=sse2a         ;;
2759                     athlon*)                   echo -xarch=pentium_proa  ;;
2760                 esac
2761                 ;;
2762             -std=c99)             echo -xc99              ;;
2763             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2764             -fPIC)                echo -KPIC -xcode=pic32 ;;
2765             -W*,*)                echo $flag              ;;
2766             -f*-*|-W*|-mimpure-text)                      ;;
2767             -shared)              echo -G                 ;;
2768             *)                    echo $flag              ;;
2769         esac
2770     done
2771 }
2772
2773 tms470_flags(){
2774     for flag; do
2775         case $flag in
2776             -march=*|-mcpu=*)
2777                 case "${flag#*=}" in
2778                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2779                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2780                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2781                     armv6*|arm11*)          echo -mv=6   ;;
2782                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2783                                             echo -mv=5e  ;;
2784                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2785                 esac
2786                 ;;
2787             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2788             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2789             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2790             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2791             -msoft-float)   echo --float_support=vfplib       ;;
2792             -O[0-3]|-mf=*)  echo $flag                        ;;
2793             -g)             echo -g -mn                       ;;
2794             -pds=*)         echo $flag                        ;;
2795             -D*|-I*)        echo $flag                        ;;
2796             --gcc|--abi=*)  echo $flag                        ;;
2797             -me)            echo $flag                        ;;
2798         esac
2799     done
2800 }
2801
2802 probe_cc(){
2803     pfx=$1
2804     _cc=$2
2805
2806     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2807     unset _ld_o _ldflags _ld_lib _ld_path
2808     unset _depflags _DEPCMD _DEPFLAGS
2809     _flags_filter=echo
2810
2811     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2812         _type=llvm_gcc
2813         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2814         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2815         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2816         _cflags_speed='-O3'
2817         _cflags_size='-Os'
2818     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2819         _type=gcc
2820         gcc_version=$($_cc --version | head -n1)
2821         gcc_basever=$($_cc -dumpversion)
2822         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2823         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2824         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2825         if ! $_cc -dumpversion | grep -q '^2\.'; then
2826             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2827         fi
2828         _cflags_speed='-O3'
2829         _cflags_size='-Os'
2830     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2831         _type=icc
2832         _ident=$($_cc --version | head -n1)
2833         _depflags='-MMD'
2834         _cflags_speed='-O3'
2835         _cflags_size='-Os'
2836         _cflags_noopt='-O1'
2837     elif $_cc -v 2>&1 | grep -q xlc; then
2838         _type=xlc
2839         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2840         _cflags_speed='-O5'
2841         _cflags_size='-O5 -qcompact'
2842     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2843         _type=ccc
2844         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2845         _DEPFLAGS='-M'
2846         _cflags_speed='-fast'
2847         _cflags_size='-O1'
2848         _flags_filter=ccc_flags
2849     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2850         test -d "$sysroot" || die "No valid sysroot specified."
2851         _type=armcc
2852         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2853         armcc_conf="$PWD/armcc.conf"
2854         $_cc --arm_linux_configure                 \
2855              --arm_linux_config_file="$armcc_conf" \
2856              --configure_sysroot="$sysroot"        \
2857              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2858              die "Error creating armcc configuration file."
2859         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2860         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2861         as_default="${cross_prefix}gcc"
2862         _depflags='-MMD'
2863         _cflags_speed='-O3'
2864         _cflags_size='-Os'
2865     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2866         _type=tms470
2867         _ident=$($_cc -version | head -n1 | tr -s ' ')
2868         _flags='--gcc --abi=eabi -me'
2869         _cc_e='-ppl -fe=$@'
2870         _cc_o='-fe=$@'
2871         _depflags='-ppa -ppd=$(@:.o=.d)'
2872         _cflags_speed='-O3 -mf=5'
2873         _cflags_size='-O3 -mf=2'
2874         _flags_filter=tms470_flags
2875     elif $_cc -v 2>&1 | grep -q clang; then
2876         _type=clang
2877         _ident=$($_cc --version | head -n1)
2878         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2879         _cflags_speed='-O3'
2880         _cflags_size='-Os'
2881     elif $_cc -V 2>&1 | grep -q Sun; then
2882         _type=suncc
2883         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2884         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2885         _DEPFLAGS='-xM1 -xc99'
2886         _ldflags='-std=c99'
2887         _cflags_speed='-O5'
2888         _cflags_size='-O5 -xspace'
2889         _flags_filter=suncc_flags
2890     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2891         _type=pathscale
2892         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2893         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2894         _cflags_speed='-O2'
2895         _cflags_size='-Os'
2896         _flags_filter='filter_out -Wdisabled-optimization'
2897     elif $_cc -v 2>&1 | grep -q Open64; then
2898         _type=open64
2899         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2900         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2901         _cflags_speed='-O2'
2902         _cflags_size='-Os'
2903         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2904     elif $_cc -V 2>&1 | grep -q Portland; then
2905         _type=pgi
2906         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2907         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2908         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2909         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2910         _cflags_noopt="-O1"
2911         _flags_filter=pgi_flags
2912     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2913         _type=armasm
2914         _ident=$($_cc | head -n1)
2915         # 4509: "This form of conditional instruction is deprecated"
2916         _flags="-nologo -ignore 4509"
2917         _flags_filter=armasm_flags
2918     elif $_cc 2>&1 | grep -q Microsoft; then
2919         _type=msvc
2920         _ident=$($cc 2>&1 | head -n1)
2921         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2922         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2923         _cflags_speed="-O2"
2924         _cflags_size="-O1"
2925         if $_cc 2>&1 | grep -q Linker; then
2926             _ld_o='-out:$@'
2927         else
2928             _ld_o='-Fe$@'
2929         fi
2930         _cc_o='-Fo$@'
2931         _cc_e='-P -Fi$@'
2932         _flags_filter=msvc_flags
2933         _ld_lib='lib%.a'
2934         _ld_path='-libpath:'
2935         _flags='-nologo'
2936         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2937         if [ $pfx = hostcc ]; then
2938             append _cflags -Dsnprintf=_snprintf
2939         fi
2940     elif $_cc 2>&1 | grep -q Intel; then
2941         _type=icl
2942         _ident=$($cc 2>&1 | head -n1)
2943         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2944         # Not only is O3 broken on 13.x+ but it is slower on all previous
2945         # versions (tested) as well.
2946         _cflags_speed="-O2"
2947         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2948         if $_cc 2>&1 | grep -q Linker; then
2949             _ld_o='-out:$@'
2950         else
2951             _ld_o='-Fe$@'
2952         fi
2953         _cc_o='-Fo$@'
2954         _cc_e='-P'
2955         _flags_filter=icl_flags
2956         _ld_lib='lib%.a'
2957         _ld_path='-libpath:'
2958         # -Qdiag-error to make icl error when seeing certain unknown arguments
2959         _flags='-nologo -Qdiag-error:4044,10157'
2960         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2961         # with MSVC which enables it by default.
2962         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2963         if [ $pfx = hostcc ]; then
2964             append _cflags -Dsnprintf=_snprintf
2965         fi
2966     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2967         _type=cparser
2968         _ident=$($_cc --version | head -n1)
2969         _depflags='-MMD'
2970         _cflags_speed='-O4'
2971         _cflags_size='-O2'
2972         _flags_filter=cparser_flags
2973     fi
2974
2975     eval ${pfx}_type=\$_type
2976     eval ${pfx}_ident=\$_ident
2977 }
2978
2979 set_ccvars(){
2980     eval ${1}_C=\${_cc_c-\${${1}_C}}
2981     eval ${1}_E=\${_cc_e-\${${1}_E}}
2982     eval ${1}_O=\${_cc_o-\${${1}_O}}
2983
2984     if [ -n "$_depflags" ]; then
2985         eval ${1}_DEPFLAGS=\$_depflags
2986     else
2987         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2988         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2989         eval DEP${1}FLAGS=\$_flags
2990     fi
2991 }
2992
2993 probe_cc cc "$cc"
2994 cflags_filter=$_flags_filter
2995 cflags_speed=$_cflags_speed
2996 cflags_size=$_cflags_size
2997 cflags_noopt=$_cflags_noopt
2998 add_cflags $_flags $_cflags
2999 cc_ldflags=$_ldflags
3000 set_ccvars CC
3001
3002 probe_cc hostcc "$host_cc"
3003 host_cflags_filter=$_flags_filter
3004 add_host_cflags  $_flags $_cflags
3005 set_ccvars HOSTCC
3006
3007 test -n "$cc_type" && enable $cc_type ||
3008     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3009
3010 : ${as_default:=$cc}
3011 : ${dep_cc_default:=$cc}
3012 : ${ld_default:=$cc}
3013 : ${host_ld_default:=$host_cc}
3014 set_default ar as dep_cc ld host_ld
3015
3016 probe_cc as "$as"
3017 asflags_filter=$_flags_filter
3018 add_asflags $_flags $_cflags
3019 set_ccvars AS
3020
3021 probe_cc ld "$ld"
3022 ldflags_filter=$_flags_filter
3023 add_ldflags $_flags $_ldflags
3024 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3025 LD_O=${_ld_o-$LD_O}
3026 LD_LIB=${_ld_lib-$LD_LIB}
3027 LD_PATH=${_ld_path-$LD_PATH}
3028
3029 probe_cc hostld "$host_ld"
3030 host_ldflags_filter=$_flags_filter
3031 add_host_ldflags $_flags $_ldflags
3032 HOSTLD_O=${_ld_o-$HOSTLD_O}
3033
3034 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3035     probe_cc depcc "$dep_cc"
3036     CCDEP=${_DEPCMD:-$DEPCMD}
3037     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3038     DEPCCFLAGS=$_flags
3039 fi
3040
3041 if $ar 2>&1 | grep -q Microsoft; then
3042     arflags="-nologo"
3043     ar_o='-out:$@'
3044 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3045     arflags="rq"
3046     ar_o='$@'
3047 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3048     arflags='-Xany -r -c'
3049     ar_o='$@'
3050 else
3051     arflags="rc"
3052     ar_o='$@'
3053 fi
3054
3055 add_cflags $extra_cflags
3056 add_asflags $extra_cflags
3057
3058 if test -n "$sysroot"; then
3059     case "$cc_type" in
3060         gcc|llvm_gcc|clang)
3061             add_cppflags --sysroot="$sysroot"
3062             add_ldflags --sysroot="$sysroot"
3063         ;;
3064         tms470)
3065             add_cppflags -I"$sysinclude"
3066             add_ldflags  --sysroot="$sysroot"
3067         ;;
3068     esac
3069 fi
3070
3071 if test "$cpu" = host; then
3072     enabled cross_compile &&
3073         die "--cpu=host makes no sense when cross-compiling."
3074
3075     case "$cc_type" in
3076         gcc|llvm_gcc)
3077             check_native(){
3078                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3079                 sed -n "/cc1.*$1=/{
3080                             s/.*$1=\\([^ ]*\\).*/\\1/
3081                             p
3082                             q
3083                         }" $TMPE
3084             }
3085             cpu=$(check_native -march || check_native -mcpu)
3086         ;;
3087     esac
3088
3089     test "${cpu:-host}" = host &&
3090         die "--cpu=host not supported with compiler $cc"
3091 fi
3092
3093 # Deal with common $arch aliases
3094 case "$arch" in
3095     aarch64|arm64)
3096         arch="aarch64"
3097     ;;
3098     arm*)
3099         arch="arm"
3100     ;;
3101     mips*|IP*)
3102         arch="mips"
3103     ;;
3104     parisc*|hppa*)
3105         arch="parisc"
3106     ;;
3107     "Power Macintosh"|ppc*|powerpc*)
3108         arch="ppc"
3109     ;;
3110     s390|s390x)
3111         arch="s390"
3112     ;;
3113     sh4|sh)
3114         arch="sh4"
3115     ;;
3116     sun4u|sparc*)
3117         arch="sparc"
3118     ;;
3119     tilegx|tile-gx)
3120         arch="tilegx"
3121     ;;
3122     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3123         arch="x86"
3124     ;;
3125 esac
3126
3127 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3128 enable $arch
3129
3130 # Add processor-specific flags
3131 if enabled aarch64; then
3132
3133     case $cpu in
3134         armv*)
3135             cpuflags="-march=$cpu"
3136         ;;
3137         *)
3138             cpuflags="-mcpu=$cpu"
3139         ;;
3140     esac
3141
3142 elif enabled alpha; then
3143
3144     cpuflags="-mcpu=$cpu"
3145
3146 elif enabled arm; then
3147
3148     check_arm_arch() {
3149         check_cpp_condition stddef.h \
3150             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3151             $cpuflags
3152     }
3153
3154     probe_arm_arch() {
3155         if   check_arm_arch 4;        then echo armv4;
3156         elif check_arm_arch 4T;       then echo armv4t;
3157         elif check_arm_arch 5;        then echo armv5;
3158         elif check_arm_arch 5E;       then echo armv5e;
3159         elif check_arm_arch 5T;       then echo armv5t;
3160         elif check_arm_arch 5TE;      then echo armv5te;
3161         elif check_arm_arch 5TEJ;     then echo armv5te;
3162         elif check_arm_arch 6;        then echo armv6;
3163         elif check_arm_arch 6J;       then echo armv6j;
3164         elif check_arm_arch 6K;       then echo armv6k;
3165         elif check_arm_arch 6Z;       then echo armv6z;
3166         elif check_arm_arch 6ZK;      then echo armv6zk;
3167         elif check_arm_arch 6T2;      then echo armv6t2;
3168         elif check_arm_arch 7;        then echo armv7;
3169         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3170         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3171         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3172         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3173         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3174         fi
3175     }
3176
3177     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3178
3179     case $cpu in
3180         armv*)
3181             cpuflags="-march=$cpu"
3182             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3183         ;;
3184         *)
3185             cpuflags="-mcpu=$cpu"
3186             case $cpu in
3187                 cortex-a*)                               subarch=armv7a  ;;
3188                 cortex-r*)                               subarch=armv7r  ;;
3189                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3190                 arm11*)                                  subarch=armv6   ;;
3191                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3192                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3193                 *)                             subarch=$(probe_arm_arch) ;;
3194             esac
3195         ;;
3196     esac
3197
3198     case "$subarch" in
3199         armv5t*)    enable fast_clz                ;;
3200         armv[6-8]*) enable fast_clz fast_unaligned ;;
3201     esac
3202
3203 elif enabled avr32; then
3204
3205     case $cpu in
3206         ap7[02]0[0-2])
3207             subarch="avr32_ap"
3208             cpuflags="-mpart=$cpu"
3209         ;;
3210         ap)
3211             subarch="avr32_ap"
3212             cpuflags="-march=$cpu"
3213         ;;
3214         uc3[ab]*)
3215             subarch="avr32_uc"
3216             cpuflags="-mcpu=$cpu"
3217         ;;
3218         uc)
3219             subarch="avr32_uc"
3220             cpuflags="-march=$cpu"
3221         ;;
3222     esac
3223
3224 elif enabled bfin; then
3225
3226     cpuflags="-mcpu=$cpu"
3227
3228 elif enabled mips; then
3229
3230     cpuflags="-march=$cpu"
3231
3232 elif enabled ppc; then
3233
3234     disable ldbrx
3235
3236     case $(tolower $cpu) in
3237         601|ppc601|powerpc601)
3238             cpuflags="-mcpu=601"
3239             disable altivec
3240         ;;
3241         603*|ppc603*|powerpc603*)
3242             cpuflags="-mcpu=603"
3243             disable altivec
3244         ;;
3245         604*|ppc604*|powerpc604*)
3246             cpuflags="-mcpu=604"
3247             disable altivec
3248         ;;
3249         g3|75*|ppc75*|powerpc75*)
3250             cpuflags="-mcpu=750"
3251             disable altivec
3252         ;;
3253         g4|745*|ppc745*|powerpc745*)
3254             cpuflags="-mcpu=7450"
3255         ;;
3256         74*|ppc74*|powerpc74*)
3257             cpuflags="-mcpu=7400"
3258         ;;
3259         g5|970|ppc970|powerpc970)
3260             cpuflags="-mcpu=970"
3261         ;;
3262         power[3-7]*)
3263             cpuflags="-mcpu=$cpu"
3264         ;;
3265         cell)
3266             cpuflags="-mcpu=cell"
3267             enable ldbrx
3268         ;;
3269         e500mc)
3270             cpuflags="-mcpu=e500mc"
3271             disable altivec
3272         ;;
3273         e500v2)
3274             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3275             disable altivec
3276             disable dcbzl
3277         ;;
3278         e500)
3279             cpuflags="-mcpu=8540 -mhard-float"
3280             disable altivec
3281             disable dcbzl
3282         ;;
3283     esac
3284
3285 elif enabled sparc; then
3286
3287     case $cpu in
3288         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3289             cpuflags="-mcpu=$cpu"
3290         ;;
3291         ultrasparc*|niagara[234])
3292             cpuflags="-mcpu=$cpu"
3293         ;;
3294     esac
3295
3296 elif enabled x86; then
3297
3298     case $cpu in
3299         i[345]86|pentium)
3300             cpuflags="-march=$cpu"
3301             disable i686
3302             disable mmx
3303         ;;
3304         # targets that do NOT support nopl and conditional mov (cmov)
3305         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3306             cpuflags="-march=$cpu"
3307             disable i686
3308         ;;
3309         # targets that do support nopl and conditional mov (cmov)
3310         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3311             cpuflags="-march=$cpu"
3312             enable i686
3313             enable fast_cmov
3314         ;;
3315         # targets that do support conditional mov but on which it's slow
3316         pentium4|pentium4m|prescott|nocona)
3317             cpuflags="-march=$cpu"
3318             enable i686
3319             disable fast_cmov
3320         ;;
3321     esac
3322
3323 fi
3324
3325 if [ "$cpu" != generic ]; then
3326     add_cflags  $cpuflags
3327     add_asflags $cpuflags
3328 fi
3329
3330 # compiler sanity check
3331 check_exec <<EOF
3332 int main(void){ return 0; }
3333 EOF
3334 if test "$?" != 0; then
3335     echo "$cc is unable to create an executable file."
3336     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3337         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3338         echo "Only do this if you know what cross compiling means."
3339     fi
3340     die "C compiler test failed."
3341 fi
3342
3343 add_cppflags -D_ISOC99_SOURCE
3344 check_cflags -std=c99
3345 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3346 #include <stdlib.h>
3347 EOF
3348 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3349 #include <stdlib.h>
3350 EOF
3351
3352 add_host_cppflags -D_ISOC99_SOURCE
3353 check_host_cflags -std=c99
3354 check_host_cflags -Wall
3355 check_host_cflags -O3
3356
3357 check_64bit(){
3358     arch32=$1
3359     arch64=$2
3360     expr=$3
3361     check_code cc "" "int test[2*($expr) - 1]" &&
3362         subarch=$arch64 || subarch=$arch32
3363 }
3364
3365 case "$arch" in
3366     aarch64|alpha|ia64)
3367         spic=$shared
3368     ;;
3369     mips)
3370         check_64bit mips mips64 '_MIPS_SIM > 1'
3371         spic=$shared
3372     ;;
3373     parisc)
3374         check_64bit parisc parisc64 'sizeof(void *) > 4'
3375         spic=$shared
3376     ;;
3377     ppc)
3378         check_64bit ppc ppc64 'sizeof(void *) > 4'
3379         spic=$shared
3380     ;;
3381     s390)
3382         check_64bit s390 s390x 'sizeof(void *) > 4'
3383         spic=$shared
3384     ;;
3385     sparc)
3386         check_64bit sparc sparc64 'sizeof(void *) > 4'
3387         spic=$shared
3388     ;;
3389     x86)
3390         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3391         if test "$subarch" = "x86_64"; then
3392             spic=$shared
3393         fi
3394     ;;
3395 esac
3396
3397 enable $subarch
3398 enabled spic && enable_weak pic
3399
3400 # OS specific
3401 case $target_os in
3402     aix)
3403         SHFLAGS=-shared
3404         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3405         enabled shared && add_ldflags -Wl,-brtl
3406         ;;
3407     android)
3408         disable symver
3409         SLIB_INSTALL_NAME='$(SLIBNAME)'
3410         SLIB_INSTALL_LINKS=
3411         # soname not set on purpose
3412         SHFLAGS=-shared
3413         ;;
3414     haiku)
3415         prefix_default="/boot/common"
3416         network_extralibs="-lnetwork"
3417         host_libs=
3418         ;;
3419     sunos)
3420         SHFLAGS='-shared -Wl,-h,$$(@F)'
3421         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3422         network_extralibs="-lsocket -lnsl"
3423         # When using suncc to build, the Solaris linker will mark
3424         # an executable with each instruction set encountered by
3425         # the Solaris assembler.  As our libraries contain their own
3426         # guards for processor-specific code, instead suppress
3427         # generation of the HWCAPS ELF section on Solaris x86 only.
3428         enabled_all suncc x86 &&
3429             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3430             add_ldflags -Wl,-M,mapfile
3431         nm_default='nm -P -g'
3432         ;;
3433     netbsd)
3434         disable symver
3435         oss_indev_extralibs="-lossaudio"
3436         oss_outdev_extralibs="-lossaudio"
3437         ;;
3438     openbsd|bitrig)
3439         disable symver
3440         SHFLAGS='-shared'
3441         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3442         SLIB_INSTALL_LINKS=
3443         oss_indev_extralibs="-lossaudio"
3444         oss_outdev_extralibs="-lossaudio"
3445         ;;
3446     dragonfly)
3447         disable symver
3448         ;;
3449     freebsd)
3450         ;;
3451     bsd/os)
3452         add_extralibs -lpoll -lgnugetopt
3453         ;;
3454     darwin)
3455         enabled ppc && add_asflags -force_cpusubtype_ALL
3456         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3457         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3458         add_ldflags -Wl,-dynamic,-search_paths_first
3459         SLIBSUF=".dylib"
3460         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3461         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3462         objformat="macho"
3463         enabled x86_64 && objformat="macho64"
3464         enabled_any pic shared ||
3465             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3466         ;;
3467     mingw32*)
3468         if test $target_os = "mingw32ce"; then
3469             disable network
3470         else
3471             target_os=mingw32
3472         fi
3473         LIBTARGET=i386
3474         if enabled x86_64; then
3475             LIBTARGET="i386:x86-64"
3476         elif enabled arm; then
3477             LIBTARGET=arm-wince
3478         fi
3479         check_ldflags -Wl,--nxcompat
3480         check_ldflags -Wl,--dynamicbase
3481         shlibdir_default="$bindir_default"
3482         SLIBPREF=""
3483         SLIBSUF=".dll"
3484         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3485         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3486         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3487         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3488         SLIB_INSTALL_LINKS=
3489         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3490         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3491         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3492         objformat="win32"
3493         dlltool="${cross_prefix}dlltool"
3494         ranlib=:
3495         enable dos_paths
3496         ;;
3497     win32|win64)
3498         disable symver
3499         if enabled shared; then
3500             # Link to the import library instead of the normal static library
3501             # for shared libs.
3502             LD_LIB='%.lib'
3503             # Cannot build both shared and static libs with MSVC or icl.
3504             disable static
3505         fi
3506         shlibdir_default="$bindir_default"
3507         SLIBPREF=""
3508         SLIBSUF=".dll"
3509         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3510         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3511         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3512         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3513         SLIB_INSTALL_LINKS=
3514         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3515         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3516         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3517         objformat="win32"
3518         ranlib=:
3519         enable dos_paths
3520         ;;
3521     cygwin*)
3522         target_os=cygwin
3523         shlibdir_default="$bindir_default"
3524         SLIBPREF="cyg"
3525         SLIBSUF=".dll"
3526         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3527         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3528         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3529         SLIB_INSTALL_LINKS=
3530         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3531         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3532         objformat="win32"
3533         enable dos_paths
3534         ;;
3535     *-dos|freedos|opendos)
3536         network_extralibs="-lsocket"
3537         objformat="coff"
3538         enable dos_paths
3539         add_cppflags -U__STRICT_ANSI__
3540         ;;
3541     linux)
3542         enable dv1394
3543         ;;
3544     irix*)
3545         target_os=irix
3546         ranlib="echo ignoring ranlib"
3547         ;;
3548     os/2*)
3549         ln_s="cp -f"
3550         objformat="aout"
3551         add_cppflags -D_GNU_SOURCE
3552         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3553         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3554         LIBSUF="_s.a"
3555         SLIBPREF=""
3556         SLIBSUF=".dll"
3557         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3558         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3559         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3560             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3561             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3562             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3563             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3564             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3565         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3566             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3567         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3568         enable dos_paths
3569         ;;
3570     gnu/kfreebsd)
3571         add_cppflags -D_BSD_SOURCE
3572         ;;
3573     gnu)
3574         ;;
3575     qnx)
3576         add_cppflags -D_QNX_SOURCE
3577         network_extralibs="-lsocket"
3578         ;;
3579     symbian)
3580         SLIBSUF=".dll"
3581         enable dos_paths
3582         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3583         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3584         add_ldflags -Wl,--target1-abs,--no-undefined \
3585                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3586                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3587         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3588                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3589                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3590         ;;
3591     osf1)
3592         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3593         ;;
3594     minix)
3595         ;;
3596     plan9)
3597         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3598                      -D_REENTRANT_SOURCE        \
3599                      -D_RESEARCH_SOURCE         \
3600                      -DFD_SETSIZE=96            \
3601                      -DHAVE_SOCK_OPTS
3602         add_compat strtod.o strtod=avpriv_strtod
3603         network_extralibs='-lbsd'
3604         exeobjs=compat/plan9/main.o
3605         cp_f='cp'
3606         ;;
3607     none)
3608         ;;
3609     *)
3610         die "Unknown OS '$target_os'."
3611         ;;
3612 esac
3613
3614 # determine libc flavour
3615
3616 probe_libc(){
3617     pfx=$1
3618     pfx_no_=${pfx%_}
3619     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3620     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3621         eval ${pfx}libc_type=uclibc
3622         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3623     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3624         eval ${pfx}libc_type=glibc
3625         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3626     # MinGW headers can be installed on Cygwin, so check for newlib first.
3627     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3628         eval ${pfx}libc_type=newlib
3629         add_${pfx}cppflags -U__STRICT_ANSI__
3630     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3631     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3632         eval ${pfx}libc_type=mingw64
3633         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3634         eval test \$${pfx_no_}cc_type = "gcc" &&
3635             add_${pfx}cppflags -D__printf__=__gnu_printf__
3636     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3637          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3638         eval ${pfx}libc_type=mingw32
3639         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3640             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3641             die "ERROR: MinGW32 runtime version must be >= 3.15."
3642         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3643         eval test \$${pfx_no_}cc_type = "gcc" &&
3644             add_${pfx}cppflags -D__printf__=__gnu_printf__
3645     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3646         eval ${pfx}libc_type=msvcrt
3647         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3648         # 0x601 by default unless something else is set by the user.
3649         # This can easily lead to us detecting functions only present
3650         # in such new versions and producing binaries requiring windows 7.0.
3651         # Therefore explicitly set the default to XP unless the user has
3652         # set something else on the command line.
3653         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3654             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3655     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3656         eval ${pfx}libc_type=klibc
3657     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3658         eval ${pfx}libc_type=bionic
3659     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3660         eval ${pfx}libc_type=solaris
3661         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3662     else
3663         eval ${pfx}libc_type=default
3664         add_${pfx}cppflags -D_DEFAULT_SOURCE
3665     fi
3666 }
3667
3668 probe_libc
3669 test -n "$libc_type" && enable libc_$libc_type
3670 probe_libc host_
3671 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3672
3673 case $libc_type in
3674     bionic)
3675         add_compat strtod.o strtod=avpriv_strtod
3676         ;;
3677     msvcrt)
3678         add_compat strtod.o strtod=avpriv_strtod
3679         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3680                                      _snprintf=avpriv_snprintf  \
3681                                      vsnprintf=avpriv_vsnprintf
3682         ;;
3683 esac
3684
3685 # hacks for compiler/libc/os combinations
3686
3687 if enabled_all tms470 libc_glibc; then
3688     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3689     add_cppflags -D__USER_LABEL_PREFIX__=
3690     add_cppflags -D__builtin_memset=memset
3691     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3692     add_cflags   -pds=48    # incompatible redefinition of macro
3693 fi
3694
3695 if enabled_all ccc libc_glibc; then
3696     add_ldflags -Wl,-z,now  # calls to libots crash without this
3697 fi
3698
3699 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3700     add_cppflags '-I\$(SRC_PATH)/compat/float'
3701
3702 esc(){
3703     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3704 }
3705
3706 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3707
3708 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3709
3710 set_default $PATHS_LIST
3711 set_default nm
3712
3713 # we need to build at least one lib type
3714 if ! enabled_any static shared; then
3715     cat <<EOF
3716 At least one library type must be built.
3717 Specify --enable-static to build the static libraries or --enable-shared to
3718 build the shared libraries as well. To only build the shared libraries specify
3719 --disable-static in addition to --enable-shared.
3720 EOF
3721     exit 1;
3722 fi
3723
3724 die_license_disabled() {
3725     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3726 }
3727
3728 die_license_disabled gpl libcdio
3729 die_license_disabled gpl libx264
3730 die_license_disabled gpl libx265
3731 die_license_disabled gpl libxavs
3732 die_license_disabled gpl libxvid
3733 die_license_disabled gpl x11grab
3734
3735 die_license_disabled nonfree libfaac
3736 die_license_disabled nonfree libfdk_aac
3737 die_license_disabled nonfree openssl
3738
3739 die_license_disabled version3 libopencore_amrnb
3740 die_license_disabled version3 libopencore_amrwb
3741 die_license_disabled version3 libvo_aacenc
3742 die_license_disabled version3 libvo_amrwbenc
3743
3744 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3745
3746 disabled optimizations || check_cflags -fomit-frame-pointer
3747
3748 enable_weak_pic() {
3749     disabled pic && return
3750     enable pic
3751     add_cppflags -DPIC
3752     case "$target_os" in
3753     mingw*|cygwin*)
3754         ;;
3755     *)
3756         add_cflags -fPIC
3757         ;;
3758     esac
3759     add_asflags  -fPIC
3760 }
3761
3762 enabled pic && enable_weak_pic
3763
3764 check_cc <<EOF || die "Symbol mangling check failed."
3765 int ff_extern;
3766 EOF
3767 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3768 extern_prefix=${sym%%ff_extern*}
3769
3770 check_cc <<EOF && enable_weak inline_asm
3771 void foo(void) { __asm__ volatile ("" ::); }
3772 EOF
3773
3774 _restrict=
3775 for restrict_keyword in restrict __restrict__ __restrict; do
3776     check_cc <<EOF && _restrict=$restrict_keyword && break
3777 void foo(char * $restrict_keyword p);
3778 EOF
3779 done
3780
3781 check_cc <<EOF && enable pragma_deprecated
3782 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3783 EOF
3784
3785 check_cc <<EOF && enable attribute_packed
3786 struct { int x; } __attribute__((packed)) x;
3787 EOF
3788
3789 check_cc <<EOF && enable attribute_may_alias
3790 union { int x; } __attribute__((may_alias)) x;
3791 EOF
3792
3793 check_cc <<EOF || die "endian test failed"
3794 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3795 EOF
3796 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3797
3798 check_gas() {
3799     log "check_gas using '$as' as AS"
3800     # :vararg is used on aarch64, arm and ppc altivec
3801     check_as <<EOF || return 1
3802 .macro m n, y:vararg=0
3803 \n: .int \y
3804 .endm
3805 m x
3806 EOF
3807     # .altmacro is only used in arm asm
3808     ! enabled arm || check_as <<EOF || return 1
3809 .altmacro
3810 EOF
3811     enable gnu_as
3812     return 0
3813 }
3814
3815 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3816     nogas=:
3817     enabled_any arm aarch64 && nogas=die
3818     enabled_all ppc altivec && nogas=warn
3819     as_noop=-v
3820
3821     case $as_type in
3822         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3823         gcc)  gaspp_as_type=gas ;;
3824         *)    gaspp_as_type=$as_type ;;
3825     esac
3826
3827     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3828
3829     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3830         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3831
3832     if ! check_gas ; then
3833         as=${gas:=$as}
3834         check_gas || \
3835             $nogas "GNU assembler not found, install/update gas-preprocessor"
3836     fi
3837
3838     check_as <<EOF && enable as_func
3839 .func test
3840 .endfunc
3841 EOF
3842 fi
3843
3844 check_inline_asm inline_asm_labels '"1:\n"'
3845
3846 if enabled aarch64; then
3847     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3848     # internal assembler in clang 3.3 does not support this instruction
3849     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3850     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3851
3852     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3853
3854 elif enabled alpha; then
3855
3856     check_cflags -mieee
3857
3858 elif enabled arm; then
3859
3860     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3861     enabled thumb && check_cflags -mthumb || check_cflags -marm
3862
3863     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3864         enable vfp_args
3865     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3866         case "${cross_prefix:-$cc}" in
3867             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3868             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3869 __asm__ (".eabi_attribute 28, 1");
3870 int main(void) { return 0; }
3871 EOF
3872         esac
3873         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3874     fi
3875
3876     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3877     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3878     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3879     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3880     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3881     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3882
3883     [ $target_os = linux ] || [ $target_os = android ] ||
3884         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3885             $ARCH_EXT_LIST_ARM
3886
3887     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3888
3889     check_as <<EOF && enable as_dn_directive
3890 ra .dn d0.i16
3891 .unreq ra
3892 EOF
3893
3894     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3895
3896 elif enabled mips; then
3897
3898     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3899
3900 elif enabled parisc; then
3901
3902     if enabled gcc; then
3903         case $($cc -dumpversion) in
3904             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3905         esac
3906     fi
3907
3908 elif enabled ppc; then
3909
3910     enable local_aligned_8 local_aligned_16
3911
3912     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3913     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3914     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3915     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3916
3917     # AltiVec flags: The FSF version of GCC differs from the Apple version
3918     if enabled altivec; then
3919         check_cflags -maltivec -mabi=altivec &&
3920         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3921         check_cflags -faltivec
3922
3923         # check if our compiler supports Motorola AltiVec C API
3924         check_cc <<EOF || disable altivec
3925 $inc_altivec_h
3926 int main(void) {
3927     vector signed int v1 = (vector signed int) { 0 };
3928     vector signed int v2 = (vector signed int) { 1 };
3929     v1 = vec_add(v1, v2);
3930     return 0;
3931 }
3932 EOF
3933
3934         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3935     fi
3936
3937 elif enabled x86; then
3938
3939     check_builtin rdtsc    intrin.h   "__rdtsc()"
3940     check_builtin mm_empty mmintrin.h "_mm_empty()"
3941
3942     enable local_aligned_8 local_aligned_16
3943
3944     # check whether EBP is available on x86
3945     # As 'i' is stored on the stack, this program will crash
3946     # if the base pointer is used to access it because the
3947     # base pointer is cleared in the inline assembly code.
3948     check_exec_crash <<EOF && enable ebp_available
3949 volatile int i=0;
3950 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3951 return i;
3952 EOF
3953
3954     # check whether EBX is available on x86
3955     check_inline_asm ebx_available '""::"b"(0)' &&
3956         check_inline_asm ebx_available '"":::"%ebx"'
3957
3958     # check whether xmm clobbers are supported
3959     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3960
3961     # check whether binutils is new enough to compile SSSE3/MMXEXT
3962     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3963     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3964
3965     if ! disabled_any asm mmx yasm; then
3966         if check_cmd $yasmexe --version; then
3967             enabled x86_64 && yasm_extra="-m amd64"
3968             yasm_debug="-g dwarf2"
3969         elif check_cmd nasm -v; then
3970             yasmexe=nasm
3971             yasm_debug="-g -F dwarf"
3972             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3973         fi
3974
3975         YASMFLAGS="-f $objformat $yasm_extra"
3976         enabled pic               && append YASMFLAGS "-DPIC"
3977         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3978         case "$objformat" in
3979             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3980         esac
3981
3982         check_yasm "movbe ecx, [5]" && enable yasm ||
3983             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3984         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3985         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3986         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3987         check_yasm "CPU amdnop" || disable cpunop
3988     fi
3989
3990     case "$cpu" in
3991         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3992             disable fast_clz
3993         ;;
3994     esac
3995
3996 fi
3997
3998 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3999
4000 check_ldflags -Wl,--as-needed
4001
4002 if check_func dlopen; then
4003     ldl=
4004 elif check_func dlopen -ldl; then
4005     ldl=-ldl
4006 fi
4007
4008 if ! disabled network; then
4009     check_func getaddrinfo $network_extralibs
4010     check_func getservbyport $network_extralibs
4011     check_func inet_aton $network_extralibs
4012
4013     check_type netdb.h "struct addrinfo"
4014     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4015     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4016     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4017     check_type poll.h "struct pollfd"
4018     check_type netinet/sctp.h "struct sctp_event_subscribe"
4019     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4020     check_type netinet/in.h "struct sockaddr_in6"
4021     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4022     check_type "sys/types.h sys/socket.h" socklen_t
4023
4024     # Prefer arpa/inet.h over winsock2
4025     if check_header arpa/inet.h ; then
4026         check_func closesocket
4027     elif check_header winsock2.h ; then
4028         check_func_headers winsock2.h closesocket -lws2 &&
4029             network_extralibs="-lws2" ||
4030         { check_func_headers winsock2.h closesocket -lws2_32 &&
4031             network_extralibs="-lws2_32"; } || disable winsock2_h network
4032         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4033
4034         check_type ws2tcpip.h socklen_t
4035         check_type ws2tcpip.h "struct addrinfo"
4036         check_type ws2tcpip.h "struct group_source_req"
4037         check_type ws2tcpip.h "struct ip_mreq_source"
4038         check_type ws2tcpip.h "struct ipv6_mreq"
4039         check_type winsock2.h "struct pollfd"
4040         check_struct winsock2.h "struct sockaddr" sa_len
4041         check_type ws2tcpip.h "struct sockaddr_in6"
4042         check_type ws2tcpip.h "struct sockaddr_storage"
4043     else
4044         disable network
4045     fi
4046 fi
4047
4048 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4049 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4050 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4051 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4052
4053 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4054 check_func  ${malloc_prefix}memalign            && enable memalign
4055 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4056
4057 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4058     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4059
4060 check_func  fcntl
4061 check_func  fork
4062 check_func  gethrtime
4063 check_func  getopt
4064 check_func  getrusage
4065 check_func  gettimeofday
4066 check_func  gmtime_r
4067 check_func  isatty
4068 check_func  localtime_r
4069 check_func  mach_absolute_time
4070 check_func  mkstemp
4071 check_func  mmap
4072 check_func  mprotect
4073 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4074 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4075 check_func  sched_getaffinity
4076 check_func  setrlimit
4077 check_func  strerror_r
4078 check_func  strptime
4079 check_func  sysconf
4080 check_func  sysctl
4081 check_func  usleep
4082
4083 check_func_headers io.h setmode
4084 check_func_headers stdlib.h getenv
4085
4086 check_func_headers windows.h CoTaskMemFree -lole32
4087 check_func_headers windows.h GetProcessAffinityMask
4088 check_func_headers windows.h GetProcessTimes
4089 check_func_headers windows.h GetSystemTimeAsFileTime
4090 check_func_headers windows.h MapViewOfFile
4091 check_func_headers windows.h SetConsoleTextAttribute
4092 check_func_headers windows.h Sleep
4093 check_func_headers windows.h VirtualAlloc
4094 check_struct windows.h "CONDITION_VARIABLE" Ptr
4095
4096 check_header direct.h
4097 check_header dlfcn.h
4098 check_header dxva.h
4099 check_header dxva2api.h
4100 check_header io.h
4101 check_header mach/mach_time.h
4102 check_header malloc.h
4103 check_header poll.h
4104 check_header sys/mman.h
4105 check_header sys/param.h
4106 check_header sys/resource.h
4107 check_header sys/select.h
4108 check_header sys/time.h
4109 check_header sys/un.h
4110 check_header unistd.h
4111 check_header vdpau/vdpau.h
4112 check_header vdpau/vdpau_x11.h
4113 check_header VideoDecodeAcceleration/VDADecoder.h
4114 check_header windows.h
4115 check_header X11/extensions/XvMClib.h
4116
4117 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4118 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4119 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4120
4121 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4122
4123 if ! disabled w32threads && ! enabled pthreads; then
4124     check_func_headers "windows.h process.h" _beginthreadex &&
4125         enable w32threads || disable w32threads
4126 fi
4127
4128 # check for some common methods of building with pthread support
4129 # do this before the optional library checks as some of them require pthreads
4130 if ! disabled pthreads && ! enabled w32threads; then
4131     enable pthreads
4132     if check_func pthread_join -pthread; then
4133         add_cflags -pthread
4134         add_extralibs -pthread
4135     elif check_func pthread_join -pthreads; then
4136         add_cflags -pthreads
4137         add_extralibs -pthreads
4138     elif check_func pthread_join -lpthreadGC2; then
4139         add_extralibs -lpthreadGC2
4140     elif check_lib pthread.h pthread_join -lpthread; then
4141         :
4142     elif ! check_func pthread_join; then
4143         disable pthreads
4144     fi
4145 fi
4146
4147 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4148 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4149
4150 check_lib math.h sin -lm && LIBM="-lm"
4151 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4152
4153 atan2f_args=2
4154 ldexpf_args=2
4155 powf_args=2
4156
4157 for func in $MATH_FUNCS; do
4158     eval check_mathfunc $func \${${func}_args:-1}
4159 done
4160
4161 # these are off by default, so fail if requested and not available
4162 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4163                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4164                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4165 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4166 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4167 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4168 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4169 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4170 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4171 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4172 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4173                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4174                                done || die "ERROR: libgsm not found"; }
4175 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4176 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4177 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4178 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4179 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4180 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4181                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4182 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4183 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4184 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4185 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4186 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4187 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4188 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4189 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4190 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4191 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4192 enabled libvpx            && {
4193     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4194                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4195     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4196                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4197     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4198     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4199 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4200 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4201 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4202                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4203                                die "ERROR: libx264 version must be >= 0.118."; }
4204 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4205                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4206                                die "ERROR: libx265 version must be >= 17."; }
4207 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4208 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4209 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4210                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4211                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4212                                die "ERROR: openssl not found"; }
4213
4214 if enabled gnutls; then
4215     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4216     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4217 fi
4218
4219 # libdc1394 check
4220 if enabled libdc1394; then
4221     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4222         enable libdc1394_2; } ||
4223     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4224         enable libdc1394_1; } ||
4225     die "ERROR: No version of libdc1394 found "
4226 fi
4227
4228 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4229     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4230     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4231     enable sdl
4232 fi
4233
4234 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4235 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4236
4237 check_header linux/fb.h
4238 check_header linux/videodev2.h
4239 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4240
4241 check_header sys/videoio.h
4242
4243 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4244 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4245 # w32api 3.12 had it defined wrong
4246 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4247
4248 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4249 { check_header dev/bktr/ioctl_meteor.h &&
4250   check_header dev/bktr/ioctl_bt848.h; } ||
4251 { check_header machine/ioctl_meteor.h &&
4252   check_header machine/ioctl_bt848.h; } ||
4253 { check_header dev/video/meteor/ioctl_meteor.h &&
4254   check_header dev/video/bktr/ioctl_bt848.h; } ||
4255 check_header dev/ic/bt8xx.h
4256
4257 check_header sndio.h
4258 check_header sys/soundcard.h
4259 check_header soundcard.h
4260
4261 enabled_any alsa_indev alsa_outdev &&
4262     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4263
4264 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4265     check_func jack_port_get_latency_range -ljack
4266
4267 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4268
4269 if enabled libcdio; then
4270     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4271     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4272 fi
4273
4274 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4275
4276 enabled x11grab                                           &&
4277 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4278 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4279 { enabled xlib || die "ERROR: Xlib not found"; }
4280
4281 enabled vdpau &&
4282     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4283     disable vdpau
4284
4285 enabled vdpau && enabled xlib &&
4286     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4287     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4288     enable vdpau_x11
4289
4290 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4291
4292 # add some useful compiler flags if supported
4293 check_cflags -Wdeclaration-after-statement
4294 check_cflags -Wall
4295 check_cflags -Wdisabled-optimization
4296 check_cflags -Wpointer-arith
4297 check_cflags -Wredundant-decls
4298 check_cflags -Wcast-qual
4299 check_cflags -Wwrite-strings
4300 check_cflags -Wtype-limits
4301 check_cflags -Wundef
4302 check_cflags -Wmissing-prototypes
4303 check_cflags -Wstrict-prototypes
4304 enabled extra_warnings && check_cflags -Winline
4305
4306 check_disable_warning(){
4307     warning_flag=-W${1#-Wno-}
4308     test_cflags $warning_flag && add_cflags $1
4309 }
4310
4311 check_disable_warning -Wno-parentheses
4312 check_disable_warning -Wno-switch
4313 check_disable_warning -Wno-format-zero-length
4314 check_disable_warning -Wno-pointer-sign
4315
4316 # add some linker flags
4317 check_ldflags -Wl,--warn-common
4318 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4319 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4320 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4321
4322 # add some strip flags
4323 # -wN '..@*' is more selective than -x, but not available everywhere.
4324 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4325
4326 enabled neon_clobber_test &&
4327     check_ldflags -Wl,--wrap,avcodec_open2              \
4328                   -Wl,--wrap,avcodec_decode_audio4      \
4329                   -Wl,--wrap,avcodec_decode_video2      \
4330                   -Wl,--wrap,avcodec_decode_subtitle2   \
4331                   -Wl,--wrap,avcodec_encode_audio2      \
4332                   -Wl,--wrap,avcodec_encode_video2      \
4333                   -Wl,--wrap,avcodec_encode_subtitle    \
4334                   -Wl,--wrap,avresample_convert ||
4335     disable neon_clobber_test
4336
4337 enabled xmm_clobber_test &&
4338     check_ldflags -Wl,--wrap,avcodec_open2              \
4339                   -Wl,--wrap,avcodec_decode_audio4      \
4340                   -Wl,--wrap,avcodec_decode_video2      \
4341                   -Wl,--wrap,avcodec_decode_subtitle2   \
4342                   -Wl,--wrap,avcodec_encode_audio2      \
4343                   -Wl,--wrap,avcodec_encode_video2      \
4344                   -Wl,--wrap,avcodec_encode_subtitle    \
4345                   -Wl,--wrap,avresample_convert         \
4346                   -Wl,--wrap,sws_scale ||
4347     disable xmm_clobber_test
4348
4349 echo "X{};" > $TMPV
4350 if test_ldflags -Wl,--version-script,$TMPV; then
4351     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4352     check_cc <<EOF && enable symver_asm_label
4353 void ff_foo(void) __asm__ ("av_foo@VERSION");
4354 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4355 EOF
4356     check_cc <<EOF && enable symver_gnu_asm
4357 __asm__(".symver ff_foo,av_foo@VERSION");
4358 void ff_foo(void) {}
4359 EOF
4360 fi
4361
4362 if [ -z "$optflags" ]; then
4363     if enabled small; then
4364         optflags=$cflags_size
4365     elif enabled optimizations; then
4366         optflags=$cflags_speed
4367     else
4368         optflags=$cflags_noopt
4369     fi
4370 fi
4371
4372 check_optflags(){
4373     check_cflags "$@"
4374     enabled lto && check_ldflags "$@"
4375 }
4376
4377
4378 if enabled lto; then
4379     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4380     check_cflags  -flto
4381     check_ldflags -flto $cpuflags
4382 fi
4383
4384 check_optflags $optflags
4385 check_optflags -fno-math-errno
4386 check_optflags -fno-signed-zeros
4387
4388 if enabled icc; then
4389     # Just warnings, no remarks
4390     check_cflags -w1
4391     # -wd: Disable following warnings
4392     # 144, 167, 556: -Wno-pointer-sign
4393     # 1292: attribute "foo" ignored
4394     # 1419: external declaration in primary source file
4395     # 10006: ignoring unknown option -fno-signed-zeros
4396     # 10148: ignoring unknown option -Wno-parentheses
4397     # 10156: ignoring option '-W'; no argument required
4398     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4399     # 11030: Warning unknown option --as-needed
4400     # 10156: ignoring option '-export'; no argument required
4401     check_ldflags -wd10156,11030
4402     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4403     enable ebp_available
4404     if enabled x86_32; then
4405         icc_version=$($cc -dumpversion)
4406         test ${icc_version%%.*} -ge 11 &&
4407             check_cflags -falign-stack=maintain-16-byte ||
4408             disable aligned_stack
4409     fi
4410 elif enabled ccc; then
4411     # disable some annoying warnings
4412     add_cflags -msg_disable bitnotint
4413     add_cflags -msg_disable mixfuncvoid
4414     add_cflags -msg_disable nonstandcast
4415     add_cflags -msg_disable unsupieee
4416 elif enabled gcc; then
4417     check_optflags -fno-tree-vectorize
4418     check_cflags -Werror=implicit-function-declaration
4419     check_cflags -Werror=missing-prototypes
4420     check_cflags -Werror=return-type
4421     check_cflags -Werror=declaration-after-statement
4422     check_cflags -Werror=vla
4423     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4424 elif enabled llvm_gcc; then
4425     check_cflags -mllvm -stack-alignment=16
4426 elif enabled clang; then
4427     check_cflags -mllvm -stack-alignment=16
4428     check_cflags -Qunused-arguments
4429     check_cflags -Werror=implicit-function-declaration
4430     check_cflags -Werror=missing-prototypes
4431     check_cflags -Werror=return-type
4432 elif enabled cparser; then
4433     add_cflags -Wno-missing-variable-declarations
4434     add_cflags -Wno-empty-statement
4435 elif enabled armcc; then
4436     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4437     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4438     # 2523: use of inline assembly is deprecated
4439     add_cflags -W${armcc_opt},--diag_suppress=2523
4440     add_cflags -W${armcc_opt},--diag_suppress=1207
4441     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4442     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4443     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4444     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4445 elif enabled tms470; then
4446     add_cflags -pds=824 -pds=837
4447     disable inline_asm
4448 elif enabled pathscale; then
4449     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4450 elif enabled_any msvc icl; then
4451     enabled x86_32 && disable aligned_stack
4452     enabled_all x86_32 debug && add_cflags -Oy-
4453     enabled debug && add_ldflags -debug
4454     enable pragma_deprecated
4455     if enabled icl; then
4456         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4457         # (correctly) on icl 13.x.
4458         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4459             add_cflags -Qansi-alias
4460         # icl will pass the inline asm tests but inline asm is currently
4461         # not supported (build will fail)
4462         disable inline_asm
4463     fi
4464 fi
4465
4466 case $as_type in
4467     clang)
4468         add_asflags -Qunused-arguments
4469     ;;
4470 esac
4471
4472 case $ld_type in
4473     clang)
4474         check_ldflags -Qunused-arguments
4475     ;;
4476 esac
4477
4478 case $target_os in
4479     osf1)
4480         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4481     ;;
4482     plan9)
4483         add_cppflags -Dmain=plan9_main
4484     ;;
4485 esac
4486
4487 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4488
4489 check_deps $CONFIG_LIST       \
4490            $CONFIG_EXTRA      \
4491            $HAVE_LIST         \
4492            $ALL_COMPONENTS    \
4493
4494 enabled_all dxva2 CoTaskMemFree &&
4495     prepend avconv_libs $($ldflags_filter "-lole32") &&
4496     enable dxva2_lib
4497
4498 ! enabled_any memalign posix_memalign aligned_malloc &&
4499     enabled $simd_align_16 && enable memalign_hack
4500
4501 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4502
4503 for thread in $THREADS_LIST; do
4504     if enabled $thread; then
4505         test -n "$thread_type" &&
4506             die "ERROR: Only one thread type must be selected." ||
4507             thread_type="$thread"
4508     fi
4509 done
4510
4511 enabled zlib && add_cppflags -DZLIB_CONST
4512
4513 # conditional library dependencies, in linking order
4514 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4515 enabled resample_filter && prepend avfilter_deps "avresample"
4516 enabled scale_filter    && prepend avfilter_deps "swscale"
4517
4518 enabled opus_decoder    && prepend avcodec_deps "avresample"
4519
4520 expand_deps(){
4521     lib_deps=${1}_deps
4522     eval "deps=\$$lib_deps"
4523     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4524     unique $lib_deps
4525 }
4526
4527 map 'expand_deps $v' $LIBRARY_LIST
4528
4529 echo "install prefix            $prefix"
4530 echo "source path               $source_path"
4531 echo "C compiler                $cc"
4532 echo "C library                 $libc_type"
4533 if test "$host_cc" != "$cc"; then
4534     echo "host C compiler           $host_cc"
4535     echo "host C library            $host_libc_type"
4536 fi
4537 echo "ARCH                      $arch ($cpu)"
4538 if test "$build_suffix" != ""; then
4539     echo "build suffix              $build_suffix"
4540 fi
4541 if test "$extra_version" != ""; then
4542     echo "version string suffix     $extra_version"
4543 fi
4544 echo "big-endian                ${bigendian-no}"
4545 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4546 if enabled x86; then
4547     echo "${yasmexe}                      ${yasm-no}"
4548     echo "MMX enabled               ${mmx-no}"
4549     echo "MMXEXT enabled            ${mmxext-no}"
4550     echo "3DNow! enabled            ${amd3dnow-no}"
4551     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4552     echo "SSE enabled               ${sse-no}"
4553     echo "SSSE3 enabled             ${ssse3-no}"
4554     echo "AVX enabled               ${avx-no}"
4555     echo "XOP enabled               ${xop-no}"
4556     echo "FMA3 enabled              ${fma3-no}"
4557     echo "FMA4 enabled              ${fma4-no}"
4558     echo "i686 features enabled     ${i686-no}"
4559     echo "CMOV is fast              ${fast_cmov-no}"
4560     echo "EBX available             ${ebx_available-no}"
4561     echo "EBP available             ${ebp_available-no}"
4562 fi
4563 if enabled aarch64; then
4564     echo "NEON enabled              ${neon-no}"
4565     echo "VFP enabled               ${vfp-no}"
4566 fi
4567 if enabled arm; then
4568     echo "ARMv5TE enabled           ${armv5te-no}"
4569     echo "ARMv6 enabled             ${armv6-no}"
4570     echo "ARMv6T2 enabled           ${armv6t2-no}"
4571     echo "VFP enabled               ${vfp-no}"
4572     echo "NEON enabled              ${neon-no}"
4573 fi
4574 if enabled ppc; then
4575     echo "AltiVec enabled           ${altivec-no}"
4576     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4577     echo "dcbzl available           ${dcbzl-no}"
4578 fi
4579 echo "debug symbols             ${debug-no}"
4580 echo "optimize for size         ${small-no}"
4581 echo "optimizations             ${optimizations-no}"
4582 echo "static                    ${static-no}"
4583 echo "shared                    ${shared-no}"
4584 echo "new filter support        ${avfilter-no}"
4585 echo "network support           ${network-no}"
4586 echo "threading support         ${thread_type-no}"
4587 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4588 echo "SDL support               ${sdl-no}"
4589 test -n "$random_seed" &&
4590     echo "random seed               ${random_seed}"
4591 echo
4592
4593 echo "External libraries:"
4594 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4595 echo
4596
4597 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4598     echo "Enabled ${type}s:"
4599     eval list=\$$(toupper $type)_LIST
4600     print_enabled '_*' $list | print_3_columns
4601     echo
4602 done
4603
4604 license="LGPL version 2.1 or later"
4605 if enabled nonfree; then
4606     license="nonfree and unredistributable"
4607 elif enabled gplv3; then
4608     license="GPL version 3 or later"
4609 elif enabled lgplv3; then
4610     license="LGPL version 3 or later"
4611 elif enabled gpl; then
4612     license="GPL version 2 or later"
4613 fi
4614
4615 echo "License: $license"
4616
4617 echo "Creating config.mak and config.h..."
4618
4619 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4620
4621 config_files="$TMPH config.mak"
4622
4623 cat > config.mak <<EOF
4624 # Automatically generated by configure - do not modify!
4625 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4626 prefix=$prefix
4627 LIBDIR=\$(DESTDIR)$libdir
4628 SHLIBDIR=\$(DESTDIR)$shlibdir
4629 INCDIR=\$(DESTDIR)$incdir
4630 BINDIR=\$(DESTDIR)$bindir
4631 DATADIR=\$(DESTDIR)$datadir
4632 DOCDIR=\$(DESTDIR)$docdir
4633 MANDIR=\$(DESTDIR)$mandir
4634 SRC_PATH=$source_path
4635 CC_IDENT=$cc_ident
4636 ARCH=$arch
4637 INTRINSICS=$intrinsics
4638 CC=$cc
4639 AS=$as
4640 LD=$ld
4641 DEPCC=$dep_cc
4642 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4643 DEPAS=$as
4644 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4645 YASM=$yasmexe
4646 DEPYASM=$yasmexe
4647 AR=$ar
4648 ARFLAGS=$arflags
4649 AR_O=$ar_o
4650 RANLIB=$ranlib
4651 STRIP=$strip
4652 LN_S=$ln_s
4653 CPPFLAGS=$CPPFLAGS
4654 CFLAGS=$CFLAGS
4655 ASFLAGS=$ASFLAGS
4656 AS_C=$AS_C
4657 AS_O=$AS_O
4658 CC_C=$CC_C
4659 CC_E=$CC_E
4660 CC_O=$CC_O
4661 LD_O=$LD_O
4662 LD_LIB=$LD_LIB
4663 LD_PATH=$LD_PATH
4664 DLLTOOL=$dlltool
4665 LDFLAGS=$LDFLAGS
4666 LDEXEFLAGS=$LDEXEFLAGS
4667 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4668 STRIPFLAGS=$STRIPFLAGS
4669 YASMFLAGS=$YASMFLAGS
4670 BUILDSUF=$build_suffix
4671 FULLNAME=$FULLNAME
4672 LIBPREF=$LIBPREF
4673 LIBSUF=$LIBSUF
4674 LIBNAME=$LIBNAME
4675 SLIBPREF=$SLIBPREF
4676 SLIBSUF=$SLIBSUF
4677 EXESUF=$EXESUF
4678 EXTRA_VERSION=$extra_version
4679 CCDEP=$CCDEP
4680 CCDEP_FLAGS=$CCDEP_FLAGS
4681 ASDEP=$ASDEP
4682 ASDEP_FLAGS=$ASDEP_FLAGS
4683 CC_DEPFLAGS=$CC_DEPFLAGS
4684 AS_DEPFLAGS=$AS_DEPFLAGS
4685 HOSTCC=$host_cc
4686 HOSTLD=$host_ld
4687 HOSTCFLAGS=$host_cflags
4688 HOSTCPPFLAGS=$host_cppflags
4689 HOSTEXESUF=$HOSTEXESUF
4690 HOSTLDFLAGS=$host_ldflags
4691 HOSTLIBS=$host_libs
4692 DEPHOSTCC=$host_cc
4693 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4694 HOSTCCDEP=$HOSTCCDEP
4695 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4696 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4697 HOSTCC_C=$HOSTCC_C
4698 HOSTCC_O=$HOSTCC_O
4699 HOSTLD_O=$HOSTLD_O
4700 TARGET_EXEC=$target_exec $target_exec_args
4701 TARGET_PATH=$target_path
4702 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4703 CFLAGS-avplay=$sdl_cflags
4704 ZLIB=$($ldflags_filter -lz)
4705 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4706 EXTRALIBS=$extralibs
4707 COMPAT_OBJS=$compat_objs
4708 EXEOBJS=$exeobjs
4709 INSTALL=install
4710 LIBTARGET=${LIBTARGET}
4711 SLIBNAME=${SLIBNAME}
4712 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4713 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4714 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4715 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4716 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4717 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4718 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4719 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4720 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4721 EOF
4722
4723 get_version(){
4724     lcname=lib${1}
4725     name=$(toupper $lcname)
4726     file=$source_path/$lcname/version.h
4727     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4728     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4729     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4730     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4731     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4732 }
4733
4734 map 'get_version $v' $LIBRARY_LIST
4735
4736 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4737
4738 print_program_libs(){
4739     eval "program_libs=\$${1}_libs"
4740     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4741 }
4742
4743 map 'print_program_libs $v' $PROGRAM_LIST
4744
4745 cat > $TMPH <<EOF
4746 /* Automatically generated by configure - do not modify! */
4747 #ifndef LIBAV_CONFIG_H
4748 #define LIBAV_CONFIG_H
4749 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4750 #define LIBAV_LICENSE "$(c_escape $license)"
4751 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4752 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4753 #define restrict $_restrict
4754 #define EXTERN_PREFIX "${extern_prefix}"
4755 #define EXTERN_ASM ${extern_prefix}
4756 #define SLIBSUF "$SLIBSUF"
4757 EOF
4758
4759 test -n "$malloc_prefix" &&
4760     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4761
4762 if enabled yasm; then
4763     append config_files $TMPASM
4764     printf '' >$TMPASM
4765 fi
4766
4767 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4768
4769 print_config ARCH_   "$config_files" $ARCH_LIST
4770 print_config HAVE_   "$config_files" $HAVE_LIST
4771 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4772                                      $CONFIG_EXTRA      \
4773                                      $ALL_COMPONENTS    \
4774
4775 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4776
4777 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4778 cp_if_changed $TMPH config.h
4779 touch .config
4780
4781 enabled yasm && cp_if_changed $TMPASM config.asm
4782
4783 cat > $TMPH <<EOF
4784 /* Generated by ffconf */
4785 #ifndef AVUTIL_AVCONFIG_H
4786 #define AVUTIL_AVCONFIG_H
4787 EOF
4788
4789 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4790
4791 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4792
4793 cp_if_changed $TMPH libavutil/avconfig.h
4794
4795 test -n "$WARNINGS" && printf "\n$WARNINGS"
4796
4797 # build pkg-config files
4798
4799 lib_version(){
4800     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4801 }
4802
4803 pkgconfig_generate(){
4804     name=$1
4805     shortname=${name#lib}${build_suffix}
4806     comment=$2
4807     version=$3
4808     libs=$4
4809     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4810     requires=${requires%, }
4811     enabled ${name#lib} || return 0
4812     mkdir -p $name
4813     cat <<EOF > $name/$name.pc
4814 prefix=$prefix
4815 exec_prefix=\${prefix}
4816 libdir=$libdir
4817 includedir=$incdir
4818
4819 Name: $name
4820 Description: $comment
4821 Version: $version
4822 Requires: $(enabled shared || echo $requires)
4823 Requires.private: $(enabled shared && echo $requires)
4824 Conflicts:
4825 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4826 Libs.private: $(enabled shared && echo $libs)
4827 Cflags: -I\${includedir}
4828 EOF
4829     cat <<EOF > $name/$name-uninstalled.pc
4830 prefix=
4831 exec_prefix=
4832 libdir=\${pcfiledir}
4833 includedir=${source_path}
4834
4835 Name: $name
4836 Description: $comment
4837 Version: $version
4838 Requires: $requires
4839 Conflicts:
4840 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4841 Cflags: -I\${includedir}
4842 EOF
4843 }
4844
4845 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
4846 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4847 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4848 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4849 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4850 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4851 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"