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