7ea15aa9f7be4df9a8d32c56a22089cc33f4458b
[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     dsputil
1537     gcrypt
1538     golomb
1539     gplv3
1540     h263dsp
1541     h264chroma
1542     h264dsp
1543     h264pred
1544     h264qpel
1545     hpeldsp
1546     huffman
1547     huffyuvdsp
1548     huffyuvencdsp
1549     intrax8
1550     lgplv3
1551     lpc
1552     mpeg_er
1553     mpegaudio
1554     mpegaudiodsp
1555     mpegvideo
1556     mpegvideoenc
1557     nettle
1558     qpeldsp
1559     rangecoder
1560     riffdec
1561     riffenc
1562     rtpdec
1563     rtpenc_chain
1564     sinewin
1565     tpeldsp
1566     videodsp
1567     vp3dsp
1568 "
1569
1570 CMDLINE_SELECT="
1571     $ARCH_EXT_LIST
1572     $CONFIG_LIST
1573     $HAVE_LIST_CMDLINE
1574     $THREADS_LIST
1575     asm
1576     cross_compile
1577     debug
1578     extra_warnings
1579     logging
1580     lto
1581     optimizations
1582 "
1583
1584 PATHS_LIST="
1585     bindir
1586     datadir
1587     docdir
1588     incdir
1589     libdir
1590     mandir
1591     prefix
1592     shlibdir
1593 "
1594
1595 CMDLINE_SET="
1596     $PATHS_LIST
1597     ar
1598     arch
1599     as
1600     build_suffix
1601     cc
1602     cpu
1603     cross_prefix
1604     dep_cc
1605     extra_version
1606     host_cc
1607     host_cflags
1608     host_ld
1609     host_ldflags
1610     host_libs
1611     host_os
1612     ld
1613     logfile
1614     malloc_prefix
1615     nm
1616     optflags
1617     pkg_config
1618     pkg_config_flags
1619     random_seed
1620     samples
1621     sysinclude
1622     sysroot
1623     target_exec
1624     target_os
1625     target_path
1626     target_samples
1627     toolchain
1628 "
1629
1630 CMDLINE_APPEND="
1631     extra_cflags
1632     host_cppflags
1633 "
1634
1635 # code dependency declarations
1636
1637 # architecture extensions
1638
1639 armv5te_deps="arm"
1640 armv6_deps="arm"
1641 armv6t2_deps="arm"
1642 armv8_deps="aarch64"
1643 neon_deps_any="aarch64 arm"
1644 vfp_deps_any="aarch64 arm"
1645 vfpv3_deps="vfp"
1646
1647 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1648
1649 altivec_deps="ppc"
1650 ppc4xx_deps="ppc"
1651
1652 cpunop_deps="i686"
1653 x86_64_select="i686"
1654 x86_64_suggest="fast_cmov"
1655
1656 amd3dnow_deps="mmx"
1657 amd3dnowext_deps="amd3dnow"
1658 i686_deps="x86"
1659 mmx_deps="x86"
1660 mmxext_deps="mmx"
1661 sse_deps="mmxext"
1662 sse2_deps="sse"
1663 sse3_deps="sse2"
1664 ssse3_deps="sse3"
1665 sse4_deps="ssse3"
1666 sse42_deps="sse4"
1667 avx_deps="sse42"
1668 xop_deps="avx"
1669 fma3_deps="avx"
1670 fma4_deps="avx"
1671 avx2_deps="avx"
1672
1673 mmx_external_deps="yasm"
1674 mmx_inline_deps="inline_asm"
1675 mmx_suggest="mmx_external mmx_inline"
1676
1677 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1678     eval dep=\$${ext}_deps
1679     eval ${ext}_external_deps='"${dep}_external"'
1680     eval ${ext}_inline_deps='"${dep}_inline"'
1681     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1682 done
1683
1684 aligned_stack_if_any="aarch64 ppc x86"
1685 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1686 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1687 fast_unaligned_if_any="aarch64 ppc x86"
1688
1689 need_memalign="altivec neon sse"
1690
1691 # system capabilities
1692 log2_deps="!libc_msvcrt"
1693
1694 symver_if_any="symver_asm_label symver_gnu_asm"
1695
1696 # threading support
1697 atomics_gcc_if="sync_val_compare_and_swap"
1698 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1699 atomics_win32_if="MemoryBarrier"
1700 atomics_native_if_any="$ATOMICS_LIST"
1701 w32threads_deps="atomics_native"
1702 threads_if_any="$THREADS_LIST"
1703
1704 # subsystems
1705 dct_select="rdft"
1706 error_resilience_select="dsputil"
1707 intrax8_select="error_resilience"
1708 mdct_select="fft"
1709 rdft_select="fft"
1710 mpeg_er_select="error_resilience"
1711 mpegaudio_select="mpegaudiodsp"
1712 mpegaudiodsp_select="dct"
1713 mpegvideo_select="blockdsp dsputil hpeldsp videodsp"
1714 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1715
1716 # decoders / encoders
1717 aac_decoder_select="mdct sinewin"
1718 aac_encoder_select="audio_frame_queue mdct sinewin"
1719 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1720 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1721 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1722 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1723 aic_decoder_select="dsputil golomb"
1724 alac_encoder_select="lpc"
1725 als_decoder_select="bswapdsp"
1726 amrnb_decoder_select="lsp"
1727 amrwb_decoder_select="lsp"
1728 amv_decoder_select="sp5x_decoder"
1729 ape_decoder_select="bswapdsp"
1730 asv1_decoder_select="blockdsp bswapdsp dsputil"
1731 asv1_encoder_select="bswapdsp dsputil"
1732 asv2_decoder_select="blockdsp bswapdsp dsputil"
1733 asv2_encoder_select="bswapdsp dsputil"
1734 atrac1_decoder_select="mdct sinewin"
1735 atrac3_decoder_select="mdct"
1736 atrac3p_decoder_select="mdct sinewin"
1737 bink_decoder_select="blockdsp hpeldsp"
1738 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1739 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1740 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
1741 cllc_decoder_select="bswapdsp"
1742 comfortnoise_encoder_select="lpc"
1743 cook_decoder_select="audiodsp mdct sinewin"
1744 cscd_decoder_select="lzo"
1745 cscd_decoder_suggest="zlib"
1746 dca_decoder_select="mdct"
1747 dnxhd_decoder_select="blockdsp dsputil"
1748 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
1749 dvvideo_decoder_select="dsputil"
1750 dvvideo_encoder_select="dsputil"
1751 dxa_decoder_deps="zlib"
1752 eac3_decoder_select="ac3_decoder"
1753 eac3_encoder_select="ac3_encoder"
1754 eamad_decoder_select="aandcttables blockdsp bswapdsp dsputil mpegvideo"
1755 eatgq_decoder_select="aandcttables dsputil"
1756 eatqi_decoder_select="aandcttables blockdsp bswapdsp dsputil mpeg1video_decoder"
1757 exr_decoder_deps="zlib"
1758 ffv1_decoder_select="golomb rangecoder"
1759 ffv1_encoder_select="rangecoder"
1760 ffvhuff_decoder_select="huffyuv_decoder"
1761 ffvhuff_encoder_select="huffyuv_encoder"
1762 fic_decoder_select="golomb"
1763 flac_decoder_select="golomb"
1764 flac_encoder_select="bswapdsp golomb lpc"
1765 flashsv_decoder_deps="zlib"
1766 flashsv_encoder_deps="zlib"
1767 flashsv2_decoder_deps="zlib"
1768 flv_decoder_select="h263_decoder"
1769 flv_encoder_select="h263_encoder"
1770 fourxm_decoder_select="blockdsp bswapdsp"
1771 fraps_decoder_select="bswapdsp huffman"
1772 g2m_decoder_deps="zlib"
1773 g2m_decoder_select="blockdsp dsputil"
1774 h261_decoder_select="mpeg_er mpegvideo"
1775 h261_encoder_select="aandcttables mpegvideoenc"
1776 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1777 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1778 h263i_decoder_select="h263_decoder"
1779 h263p_encoder_select="h263_encoder"
1780 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1781 h264_decoder_suggest="error_resilience"
1782 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1783 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1784 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1785 iac_decoder_select="imc_decoder"
1786 imc_decoder_select="bswapdsp fft mdct sinewin"
1787 indeo3_decoder_select="hpeldsp"
1788 interplay_video_decoder_select="hpeldsp"
1789 jpegls_decoder_select="golomb mjpeg_decoder"
1790 jpegls_encoder_select="golomb"
1791 jv_decoder_select="blockdsp"
1792 lagarith_decoder_select="huffyuvdsp"
1793 ljpeg_encoder_select="aandcttables dsputil"
1794 loco_decoder_select="golomb"
1795 mdec_decoder_select="blockdsp dsputil mpegvideo"
1796 metasound_decoder_select="lsp mdct sinewin"
1797 mimic_decoder_select="blockdsp bswapdsp dsputil hpeldsp"
1798 mjpeg_decoder_select="blockdsp dsputil hpeldsp"
1799 mjpeg_encoder_select="aandcttables mpegvideoenc"
1800 mjpegb_decoder_select="mjpeg_decoder"
1801 mlp_decoder_select="mlp_parser"
1802 motionpixels_decoder_select="bswapdsp"
1803 mp1_decoder_select="mpegaudio"
1804 mp1float_decoder_select="mpegaudio"
1805 mp2_decoder_select="mpegaudio"
1806 mp2float_decoder_select="mpegaudio"
1807 mp3_decoder_select="mpegaudio"
1808 mp3adu_decoder_select="mpegaudio"
1809 mp3adufloat_decoder_select="mpegaudio"
1810 mp3float_decoder_select="mpegaudio"
1811 mp3on4_decoder_select="mpegaudio"
1812 mp3on4float_decoder_select="mpegaudio"
1813 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1814 mpc8_decoder_select="mpegaudiodsp"
1815 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1816 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1817 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1818 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1819 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1820 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1821 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1822 mpeg4_encoder_select="h263_encoder"
1823 msmpeg4v1_decoder_select="h263_decoder"
1824 msmpeg4v2_decoder_select="h263_decoder"
1825 msmpeg4v2_encoder_select="h263_encoder"
1826 msmpeg4v3_decoder_select="h263_decoder"
1827 msmpeg4v3_encoder_select="h263_encoder"
1828 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1829 mxpeg_decoder_select="mjpeg_decoder"
1830 nellymoser_decoder_select="mdct sinewin"
1831 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1832 nuv_decoder_select="dsputil lzo"
1833 on2avc_decoder_select="mdct"
1834 opus_decoder_deps="avresample"
1835 png_decoder_deps="zlib"
1836 png_encoder_deps="zlib"
1837 png_encoder_select="huffyuvencdsp"
1838 prores_decoder_select="dsputil"
1839 prores_encoder_select="dsputil"
1840 qcelp_decoder_select="lsp"
1841 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1842 ra_144_encoder_select="audio_frame_queue lpc"
1843 ralf_decoder_select="golomb"
1844 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1845 rv10_encoder_select="h263_encoder"
1846 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1847 rv20_encoder_select="h263_encoder"
1848 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1849 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1850 shorten_decoder_select="golomb"
1851 sipr_decoder_select="lsp"
1852 sp5x_decoder_select="mjpeg_decoder"
1853 svq1_decoder_select="hpeldsp"
1854 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1855 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1856 svq3_decoder_suggest="zlib"
1857 tak_decoder_select="audiodsp"
1858 theora_decoder_select="vp3_decoder"
1859 thp_decoder_select="mjpeg_decoder"
1860 tiff_decoder_suggest="zlib"
1861 tiff_encoder_suggest="zlib"
1862 truehd_decoder_select="mlp_decoder"
1863 truemotion2_decoder_select="bswapdsp"
1864 truespeech_decoder_select="bswapdsp"
1865 tscc_decoder_deps="zlib"
1866 twinvq_decoder_select="mdct lsp sinewin"
1867 utvideo_decoder_select="bswapdsp"
1868 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1869 vble_decoder_select="huffyuvdsp"
1870 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1871 vc1image_decoder_select="vc1_decoder"
1872 vorbis_decoder_select="mdct"
1873 vorbis_encoder_select="mdct"
1874 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1875 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1876 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1877 vp6a_decoder_select="vp6_decoder"
1878 vp6f_decoder_select="vp6_decoder"
1879 vp7_decoder_select="h264pred videodsp"
1880 vp8_decoder_select="h264pred videodsp"
1881 vp9_decoder_select="videodsp"
1882 webp_decoder_select="vp8_decoder"
1883 wmapro_decoder_select="mdct sinewin"
1884 wmav1_decoder_select="mdct sinewin"
1885 wmav1_encoder_select="mdct sinewin"
1886 wmav2_decoder_select="mdct sinewin"
1887 wmav2_encoder_select="mdct sinewin"
1888 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1889 wmv1_decoder_select="h263_decoder"
1890 wmv1_encoder_select="h263_encoder"
1891 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
1892 wmv2_encoder_select="h263_encoder"
1893 wmv3_decoder_select="vc1_decoder"
1894 wmv3image_decoder_select="wmv3_decoder"
1895 zerocodec_decoder_deps="zlib"
1896 zlib_decoder_deps="zlib"
1897 zlib_encoder_deps="zlib"
1898 zmbv_decoder_deps="zlib"
1899 zmbv_encoder_deps="zlib"
1900
1901 # hardware accelerators
1902 dxva2_deps="dxva2api_h"
1903 vaapi_deps="va_va_h"
1904 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1905 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1906 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1907
1908 h263_vaapi_hwaccel_deps="vaapi"
1909 h263_vaapi_hwaccel_select="h263_decoder"
1910 h263_vdpau_hwaccel_deps="vdpau"
1911 h263_vdpau_hwaccel_select="h263_decoder"
1912 h264_dxva2_hwaccel_deps="dxva2"
1913 h264_dxva2_hwaccel_select="h264_decoder"
1914 h264_vaapi_hwaccel_deps="vaapi"
1915 h264_vaapi_hwaccel_select="h264_decoder"
1916 h264_vda_hwaccel_deps="vda"
1917 h264_vda_hwaccel_select="h264_decoder"
1918 h264_vda_old_hwaccel_deps="vda"
1919 h264_vda_old_hwaccel_select="h264_decoder"
1920 h264_vdpau_hwaccel_deps="vdpau"
1921 h264_vdpau_hwaccel_select="h264_decoder"
1922 mpeg1_vdpau_hwaccel_deps="vdpau"
1923 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1924 mpeg2_dxva2_hwaccel_deps="dxva2"
1925 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1926 mpeg2_vaapi_hwaccel_deps="vaapi"
1927 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1928 mpeg2_vdpau_hwaccel_deps="vdpau"
1929 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1930 mpeg4_vaapi_hwaccel_deps="vaapi"
1931 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1932 mpeg4_vdpau_hwaccel_deps="vdpau"
1933 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1934 vc1_dxva2_hwaccel_deps="dxva2"
1935 vc1_dxva2_hwaccel_select="vc1_decoder"
1936 vc1_vaapi_hwaccel_deps="vaapi"
1937 vc1_vaapi_hwaccel_select="vc1_decoder"
1938 vc1_vdpau_hwaccel_deps="vdpau"
1939 vc1_vdpau_hwaccel_select="vc1_decoder"
1940 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1941 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1942 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1943
1944 # parsers
1945 h264_parser_select="h264_decoder"
1946 mpegvideo_parser_select="mpegvideo"
1947 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1948 vc1_parser_select="mpegvideo"
1949
1950 # external libraries
1951 libfaac_encoder_deps="libfaac"
1952 libfaac_encoder_select="audio_frame_queue"
1953 libfdk_aac_decoder_deps="libfdk_aac"
1954 libfdk_aac_encoder_deps="libfdk_aac"
1955 libfdk_aac_encoder_select="audio_frame_queue"
1956 libgsm_decoder_deps="libgsm"
1957 libgsm_encoder_deps="libgsm"
1958 libgsm_ms_decoder_deps="libgsm"
1959 libgsm_ms_encoder_deps="libgsm"
1960 libilbc_decoder_deps="libilbc"
1961 libilbc_encoder_deps="libilbc"
1962 libmp3lame_encoder_deps="libmp3lame"
1963 libmp3lame_encoder_select="audio_frame_queue"
1964 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1965 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1966 libopencore_amrnb_encoder_select="audio_frame_queue"
1967 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1968 libopenjpeg_decoder_deps="libopenjpeg"
1969 libopenjpeg_encoder_deps="libopenjpeg"
1970 libopus_decoder_deps="libopus"
1971 libopus_encoder_deps="libopus"
1972 libopus_encoder_select="audio_frame_queue"
1973 libschroedinger_decoder_deps="libschroedinger"
1974 libschroedinger_encoder_deps="libschroedinger"
1975 libspeex_decoder_deps="libspeex"
1976 libspeex_encoder_deps="libspeex"
1977 libspeex_encoder_select="audio_frame_queue"
1978 libtheora_encoder_deps="libtheora"
1979 libtwolame_encoder_deps="libtwolame"
1980 libvo_aacenc_encoder_deps="libvo_aacenc"
1981 libvo_aacenc_encoder_select="audio_frame_queue"
1982 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1983 libvorbis_encoder_deps="libvorbis"
1984 libvorbis_encoder_select="audio_frame_queue"
1985 libvpx_vp8_decoder_deps="libvpx"
1986 libvpx_vp8_encoder_deps="libvpx"
1987 libvpx_vp9_decoder_deps="libvpx"
1988 libvpx_vp9_encoder_deps="libvpx"
1989 libwavpack_encoder_deps="libwavpack"
1990 libwebp_encoder_deps="libwebp"
1991 libx264_encoder_deps="libx264"
1992 libx265_encoder_deps="libx265"
1993 libxavs_encoder_deps="libxavs"
1994 libxvid_encoder_deps="libxvid"
1995
1996 # demuxers / muxers
1997 ac3_demuxer_select="ac3_parser"
1998 asf_demuxer_select="riffdec"
1999 asf_muxer_select="riffenc"
2000 asf_stream_muxer_select="asf_muxer"
2001 avi_demuxer_select="riffdec"
2002 avi_muxer_select="riffenc"
2003 avisynth_demuxer_deps="avisynth"
2004 avisynth_demuxer_select="riffdec"
2005 caf_demuxer_select="riffdec"
2006 dirac_demuxer_select="dirac_parser"
2007 dxa_demuxer_select="riffdec"
2008 eac3_demuxer_select="ac3_parser"
2009 f4v_muxer_select="mov_muxer"
2010 flac_demuxer_select="flac_parser"
2011 hds_muxer_select="flv_muxer"
2012 hls_muxer_select="mpegts_muxer"
2013 ipod_muxer_select="mov_muxer"
2014 ismv_muxer_select="mov_muxer"
2015 matroska_audio_muxer_select="matroska_muxer"
2016 matroska_demuxer_select="riffdec"
2017 matroska_demuxer_suggest="bzlib lzo zlib"
2018 matroska_muxer_select="riffenc"
2019 mmf_muxer_select="riffenc"
2020 mov_demuxer_select="riffdec"
2021 mov_demuxer_suggest="zlib"
2022 mov_muxer_select="riffenc rtpenc_chain"
2023 mp3_demuxer_select="mpegaudio_parser"
2024 mp4_muxer_select="mov_muxer"
2025 mpegts_muxer_select="adts_muxer latm_muxer"
2026 mpegtsraw_demuxer_select="mpegts_demuxer"
2027 mxf_d10_muxer_select="mxf_muxer"
2028 nut_muxer_select="riffenc"
2029 nuv_demuxer_select="riffdec"
2030 ogg_demuxer_select="golomb"
2031 psp_muxer_select="mov_muxer"
2032 rtp_demuxer_select="sdp_demuxer"
2033 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2034 rtsp_demuxer_select="http_protocol rtpdec"
2035 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2036 sap_demuxer_select="sdp_demuxer"
2037 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2038 sdp_demuxer_select="rtpdec"
2039 smoothstreaming_muxer_select="ismv_muxer"
2040 spdif_muxer_select="aac_parser"
2041 tak_demuxer_select="tak_parser"
2042 tg2_muxer_select="mov_muxer"
2043 tgp_muxer_select="mov_muxer"
2044 w64_demuxer_select="wav_demuxer"
2045 wav_demuxer_select="riffdec"
2046 wav_muxer_select="riffenc"
2047 webm_muxer_select="riffenc"
2048 wtv_demuxer_select="riffdec"
2049 xmv_demuxer_select="riffdec"
2050 xwma_demuxer_select="riffdec"
2051
2052 # indevs / outdevs
2053 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2054 alsa_outdev_deps="alsa_asoundlib_h"
2055 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2056 dv1394_indev_deps="dv1394"
2057 dv1394_indev_select="dv_demuxer"
2058 fbdev_indev_deps="linux_fb_h"
2059 jack_indev_deps="jack_jack_h pthreads"
2060 libcdio_indev_deps="libcdio"
2061 libdc1394_indev_deps="libdc1394"
2062 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2063 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2064 pulse_indev_deps="libpulse"
2065 sndio_indev_deps="sndio_h"
2066 sndio_outdev_deps="sndio_h"
2067 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2068 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2069 vfwcap_indev_extralibs="-lavicap32"
2070 x11grab_indev_deps="x11grab XShmCreateImage"
2071
2072 # protocols
2073 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2074 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2075 ffrtmpcrypt_protocol_select="tcp_protocol"
2076 ffrtmphttp_protocol_deps="!librtmp_protocol"
2077 ffrtmphttp_protocol_select="http_protocol"
2078 gopher_protocol_select="network"
2079 http_protocol_select="tcp_protocol"
2080 httpproxy_protocol_select="tcp_protocol"
2081 https_protocol_select="tls_protocol"
2082 librtmp_protocol_deps="librtmp"
2083 librtmpe_protocol_deps="librtmp"
2084 librtmps_protocol_deps="librtmp"
2085 librtmpt_protocol_deps="librtmp"
2086 librtmpte_protocol_deps="librtmp"
2087 mmsh_protocol_select="http_protocol"
2088 mmst_protocol_select="network"
2089 rtmp_protocol_deps="!librtmp_protocol"
2090 rtmp_protocol_select="tcp_protocol"
2091 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2092 rtmps_protocol_deps="!librtmp_protocol"
2093 rtmps_protocol_select="tls_protocol"
2094 rtmpt_protocol_select="ffrtmphttp_protocol"
2095 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2096 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2097 rtp_protocol_select="udp_protocol"
2098 sctp_protocol_deps="struct_sctp_event_subscribe"
2099 sctp_protocol_select="network"
2100 srtp_protocol_select="rtp_protocol"
2101 tcp_protocol_select="network"
2102 tls_protocol_deps_any="openssl gnutls"
2103 tls_protocol_select="tcp_protocol"
2104 udp_protocol_select="network"
2105 unix_protocol_deps="sys_un_h"
2106 unix_protocol_select="network"
2107
2108 # filters
2109 blackframe_filter_deps="gpl"
2110 boxblur_filter_deps="gpl"
2111 bs2b_filter_deps="libbs2b"
2112 cropdetect_filter_deps="gpl"
2113 delogo_filter_deps="gpl"
2114 drawtext_filter_deps="libfreetype"
2115 frei0r_filter_deps="frei0r dlopen"
2116 frei0r_filter_extralibs='$ldl'
2117 frei0r_src_filter_deps="frei0r dlopen"
2118 frei0r_src_filter_extralibs='$ldl'
2119 hqdn3d_filter_deps="gpl"
2120 interlace_filter_deps="gpl"
2121 ocv_filter_deps="libopencv"
2122 resample_filter_deps="avresample"
2123 scale_filter_deps="swscale"
2124
2125 # examples
2126 avcodec_example_deps="avcodec avutil"
2127 filter_audio_example_deps="avfilter avutil"
2128 metadata_example_deps="avformat avutil"
2129 output_example_deps="avcodec avformat avutil swscale"
2130 transcode_aac_example_deps="avcodec avformat avresample"
2131
2132 # libraries, in linking order
2133 avcodec_deps="avutil"
2134 avdevice_deps="avformat avcodec avutil"
2135 avfilter_deps="avutil"
2136 avformat_deps="avcodec avutil"
2137 avresample_deps="avutil"
2138 swscale_deps="avutil"
2139
2140 # programs
2141 avconv_deps="avcodec avfilter avformat avresample swscale"
2142 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2143                fps_filter null_filter resample_filter scale_filter
2144                setpts_filter trim_filter"
2145 avplay_deps="avcodec avformat avresample swscale sdl"
2146 avplay_libs='$sdl_libs'
2147 avplay_select="rdft"
2148 avprobe_deps="avcodec avformat"
2149
2150 # documentation
2151 pod2man_deps="doc"
2152 texi2html_deps="doc"
2153
2154 # default parameters
2155
2156 logfile="config.log"
2157
2158 # installation paths
2159 prefix_default="/usr/local"
2160 bindir_default='${prefix}/bin'
2161 datadir_default='${prefix}/share/avconv'
2162 docdir_default='${prefix}/share/doc/libav'
2163 incdir_default='${prefix}/include'
2164 libdir_default='${prefix}/lib'
2165 mandir_default='${prefix}/share/man'
2166 shlibdir_default="$libdir_default"
2167
2168 # toolchain
2169 ar_default="ar"
2170 cc_default="gcc"
2171 host_cc_default="gcc"
2172 cp_f="cp -f"
2173 ln_s="ln -s -f"
2174 nm_default="nm -g"
2175 objformat="elf"
2176 pkg_config_default=pkg-config
2177 ranlib="ranlib"
2178 strip="strip"
2179 yasmexe="yasm"
2180
2181 nogas=":"
2182
2183 # machine
2184 arch_default=$(uname -m)
2185 cpu="generic"
2186
2187 # OS
2188 target_os_default=$(tolower $(uname -s))
2189 host_os=$target_os_default
2190
2191 # configurable options
2192 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2193
2194 enable asm
2195 enable debug
2196 enable doc
2197 enable optimizations
2198 enable safe_bitstream_reader
2199 enable static
2200 enable swscale_alpha
2201
2202 # By default, enable only those hwaccels that have no external dependencies.
2203 enable dxva2 vdpau
2204
2205 # build settings
2206 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2207 LIBPREF="lib"
2208 LIBSUF=".a"
2209 FULLNAME='$(NAME)$(BUILDSUF)'
2210 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2211 SLIBPREF="lib"
2212 SLIBSUF=".so"
2213 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2214 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2215 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2216 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2217 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2218 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2219
2220 asflags_filter=echo
2221 cflags_filter=echo
2222 ldflags_filter=echo
2223
2224 AS_C='-c'
2225 AS_O='-o $@'
2226 CC_C='-c'
2227 CC_E='-E -o $@'
2228 CC_O='-o $@'
2229 LD_O='-o $@'
2230 LD_LIB='-l%'
2231 LD_PATH='-L'
2232 HOSTCC_C='-c'
2233 HOSTCC_E='-E -o $@'
2234 HOSTCC_O='-o $@'
2235 HOSTLD_O='-o $@'
2236
2237 host_libs='-lm'
2238 host_cflags_filter=echo
2239 host_ldflags_filter=echo
2240
2241 target_path='$(CURDIR)'
2242
2243 # since the object filename is not given with the -MM flag, the compiler
2244 # is only able to print the basename, and we must add the path ourselves
2245 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2246 DEPFLAGS='-MM'
2247
2248 # find source path
2249 if test -f configure; then
2250     source_path=.
2251 else
2252     source_path=$(cd $(dirname "$0"); pwd)
2253     echo "$source_path" | grep -q '[[:blank:]]' &&
2254         die "Out of tree builds are impossible with whitespace in source path."
2255     test -e "$source_path/config.h" &&
2256         die "Out of tree builds are impossible with config.h in source dir."
2257 fi
2258
2259 for v in "$@"; do
2260     r=${v#*=}
2261     l=${v%"$r"}
2262     r=$(sh_quote "$r")
2263     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2264 done
2265
2266 find_things(){
2267     thing=$1
2268     pattern=$2
2269     file=$source_path/$3
2270     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2271 }
2272
2273 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2274 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2275 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2276 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2277 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2278 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2279 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2280 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2281 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2282 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2283 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2284
2285 ALL_COMPONENTS="
2286     $BSF_LIST
2287     $DECODER_LIST
2288     $DEMUXER_LIST
2289     $ENCODER_LIST
2290     $FILTER_LIST
2291     $HWACCEL_LIST
2292     $INDEV_LIST
2293     $MUXER_LIST
2294     $OUTDEV_LIST
2295     $PARSER_LIST
2296     $PROTOCOL_LIST
2297 "
2298
2299 for n in $COMPONENT_LIST; do
2300     v=$(toupper ${n%s})_LIST
2301     eval enable \$$v
2302     eval ${n}_if_any="\$$v"
2303 done
2304
2305 enable $ARCH_EXT_LIST
2306
2307 die_unknown(){
2308     echo "Unknown option \"$1\"."
2309     echo "See $0 --help for available options."
2310     exit 1
2311 }
2312
2313 print_3_columns() {
2314     cat | tr ' ' '\n' | sort | pr -r -3 -t
2315 }
2316
2317 show_list() {
2318     suffix=_$1
2319     shift
2320     echo $* | sed s/$suffix//g | print_3_columns
2321     exit 0
2322 }
2323
2324 rand_list(){
2325     IFS=', '
2326     set -- $*
2327     unset IFS
2328     for thing; do
2329         comp=${thing%:*}
2330         prob=${thing#$comp}
2331         prob=${prob#:}
2332         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2333         echo "prob ${prob:-0.5}"
2334         printf '%s\n' $comp
2335     done
2336 }
2337
2338 do_random(){
2339     action=$1
2340     shift
2341     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2342     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2343 }
2344
2345 for opt do
2346     optval="${opt#*=}"
2347     case "$opt" in
2348         --extra-ldflags=*)
2349             add_ldflags $optval
2350         ;;
2351         --extra-libs=*)
2352             add_extralibs $optval
2353         ;;
2354         --disable-devices)
2355             disable $INDEV_LIST $OUTDEV_LIST
2356         ;;
2357         --enable-debug=*)
2358             debuglevel="$optval"
2359         ;;
2360         --disable-programs)
2361             disable $PROGRAM_LIST
2362         ;;
2363         --disable-everything)
2364             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2365         ;;
2366         --disable-all)
2367             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2368             disable $LIBRARY_LIST $PROGRAM_LIST doc
2369         ;;
2370         --enable-random|--disable-random)
2371             action=${opt%%-random}
2372             do_random ${action#--} $COMPONENT_LIST
2373         ;;
2374         --enable-random=*|--disable-random=*)
2375             action=${opt%%-random=*}
2376             do_random ${action#--} $optval
2377         ;;
2378         --enable-*=*|--disable-*=*)
2379             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2380             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2381             eval list=\$$(toupper $thing)_LIST
2382             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2383             $action $(filter "$name" $list)
2384         ;;
2385         --enable-avserver|--disable-avserver*)
2386             warn "avserver has been removed, the ${opt} option is only"\
2387                  "provided for compatibility and will be removed in the future"
2388         ;;
2389         --enable-?*|--disable-?*)
2390             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2391             if is_in $option $COMPONENT_LIST; then
2392                 test $action = disable && action=unset
2393                 eval $action \$$(toupper ${option%s})_LIST
2394             elif is_in $option $CMDLINE_SELECT; then
2395                 $action $option
2396             else
2397                 die_unknown $opt
2398             fi
2399         ;;
2400         --list-*)
2401             NAME="${opt#--list-}"
2402             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2403             NAME=${NAME%s}
2404             eval show_list $NAME \$$(toupper $NAME)_LIST
2405         ;;
2406         --help|-h) show_help
2407         ;;
2408         *)
2409             optname="${opt%%=*}"
2410             optname="${optname#--}"
2411             optname=$(echo "$optname" | sed 's/-/_/g')
2412             if is_in $optname $CMDLINE_SET; then
2413                 eval $optname='$optval'
2414             elif is_in $optname $CMDLINE_APPEND; then
2415                 append $optname "$optval"
2416             else
2417                 die_unknown $opt
2418             fi
2419         ;;
2420     esac
2421 done
2422
2423 disabled logging && logfile=/dev/null
2424
2425 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2426 set >> $logfile
2427
2428 test -n "$cross_prefix" && enable cross_compile
2429
2430 if enabled cross_compile; then
2431     test -n "$arch" && test -n "$target_os" ||
2432         die "Must specify target arch and OS when cross-compiling"
2433 fi
2434
2435 ar_default="${cross_prefix}${ar_default}"
2436 cc_default="${cross_prefix}${cc_default}"
2437 nm_default="${cross_prefix}${nm_default}"
2438 pkg_config_default="${cross_prefix}${pkg_config_default}"
2439 ranlib="${cross_prefix}${ranlib}"
2440 strip="${cross_prefix}${strip}"
2441
2442 sysinclude_default="${sysroot}/usr/include"
2443
2444 case "$toolchain" in
2445     clang-asan)
2446         cc_default="clang"
2447         add_cflags  -fsanitize=address
2448         add_ldflags -fsanitize=address
2449     ;;
2450     clang-tsan)
2451         cc_default="clang"
2452         add_cflags  -fsanitize=thread -pie
2453         add_ldflags -fsanitize=thread -pie
2454     ;;
2455     clang-usan)
2456         cc_default="clang"
2457         add_cflags  -fsanitize=undefined -O1
2458         add_ldflags -fsanitize=undefined
2459     ;;
2460     gcc-asan)
2461         cc_default="gcc"
2462         add_cflags  -fsanitize=address
2463         add_ldflags -fsanitize=address
2464     ;;
2465     gcc-tsan)
2466         cc_default="gcc"
2467         add_cflags  -fsanitize=thread -pie -fPIC
2468         add_ldflags -fsanitize=thread -pie -fPIC
2469     ;;
2470     gcc-usan)
2471         cc_default="gcc"
2472         add_cflags  -fsanitize=undefined
2473         add_ldflags -fsanitize=undefined
2474     ;;
2475     valgrind-massif)
2476         target_exec_default="valgrind"
2477         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2478     ;;
2479     valgrind-memcheck)
2480         target_exec_default="valgrind"
2481         target_exec_args="--track-origins=yes --leak-check=full"
2482     ;;
2483     msvc)
2484         # Check whether the current MSVC version needs the C99 converter.
2485         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2486         # support enough of C99 to build libav. Default to the new
2487         # behaviour if the regexp was unable to match anything, since this
2488         # successfully parses the version number of existing supported
2489         # versions that require the converter (MSVC 2010 and 2012).
2490         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2491         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2492             cc_default="cl"
2493         else
2494             cc_default="c99wrap cl"
2495         fi
2496         ld_default="link"
2497         nm_default="dumpbin -symbols"
2498         ar_default="lib"
2499         target_os_default="win32"
2500         # Use a relative path for TMPDIR. This makes sure all the
2501         # ffconf temp files are written with a relative path, avoiding
2502         # issues with msys/win32 path conversion for MSVC parameters
2503         # such as -Fo<file> or -out:<file>.
2504         TMPDIR=.
2505     ;;
2506     icl)
2507         cc_default="icl"
2508         ld_default="xilink"
2509         nm_default="dumpbin -symbols"
2510         ar_default="xilib"
2511         target_os_default="win32"
2512         TMPDIR=.
2513     ;;
2514     gcov)
2515         add_cflags  -fprofile-arcs -ftest-coverage
2516         add_ldflags -fprofile-arcs -ftest-coverage
2517     ;;
2518     hardened)
2519         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2520         add_ldflags -Wl,-z,relro -Wl,-z,now
2521     ;;
2522     ?*)
2523         die "Unknown toolchain $toolchain"
2524     ;;
2525 esac
2526
2527 set_default arch cc pkg_config sysinclude target_exec target_os
2528 enabled cross_compile || host_cc_default=$cc
2529 set_default host_cc
2530
2531 if ! $pkg_config --version >/dev/null 2>&1; then
2532     warn "$pkg_config not found, library detection may fail."
2533     pkg_config=false
2534 fi
2535
2536 exesuf() {
2537     case $1 in
2538         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2539     esac
2540 }
2541
2542 EXESUF=$(exesuf $target_os)
2543 HOSTEXESUF=$(exesuf $host_os)
2544
2545 # set temporary file name
2546 : ${TMPDIR:=$TEMPDIR}
2547 : ${TMPDIR:=$TMP}
2548 : ${TMPDIR:=/tmp}
2549
2550 if ! check_cmd mktemp -u XXXXXX; then
2551     # simple replacement for missing mktemp
2552     # NOT SAFE FOR GENERAL USE
2553     mktemp(){
2554         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2555     }
2556 fi
2557
2558 tmpfile(){
2559     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2560         (set -C; exec > $tmp) 2>/dev/null ||
2561         die "Unable to create temporary file in $TMPDIR."
2562     append TMPFILES $tmp
2563     eval $1=$tmp
2564 }
2565
2566 trap 'rm -f -- $TMPFILES' EXIT
2567
2568 tmpfile TMPASM .asm
2569 tmpfile TMPC   .c
2570 tmpfile TMPE   $EXESUF
2571 tmpfile TMPH   .h
2572 tmpfile TMPO   .o
2573 tmpfile TMPS   .S
2574 tmpfile TMPSH  .sh
2575 tmpfile TMPV   .ver
2576
2577 unset -f mktemp
2578
2579 chmod +x $TMPE
2580
2581 # make sure we can execute files in $TMPDIR
2582 cat > $TMPSH 2>> $logfile <<EOF
2583 #! /bin/sh
2584 EOF
2585 chmod +x $TMPSH >> $logfile 2>&1
2586 if ! $TMPSH >> $logfile 2>&1; then
2587     cat <<EOF
2588 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2589 variable to another directory and make sure that it is not mounted noexec.
2590 EOF
2591     die "Sanity test failed."
2592 fi
2593
2594 ccc_flags(){
2595     for flag; do
2596         case $flag in
2597             -std=c99)           echo -c99                       ;;
2598             -mcpu=*)            echo -arch ${flag#*=}           ;;
2599             -mieee)             echo -ieee                      ;;
2600             -O*|-fast)          echo $flag                      ;;
2601             -fno-math-errno)    echo -assume nomath_errno       ;;
2602             -g)                 echo -g3                        ;;
2603             -Wall)              echo -msg_enable level2         ;;
2604             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2605             -Wl,*)              echo $flag                      ;;
2606             -f*|-W*)                                            ;;
2607             *)                  echo $flag                      ;;
2608         esac
2609    done
2610 }
2611
2612 cparser_flags(){
2613     for flag; do
2614         case $flag in
2615             -Wno-switch)             echo -Wno-switch-enum ;;
2616             -Wno-format-zero-length) ;;
2617             -Wdisabled-optimization) ;;
2618             -Wno-pointer-sign)       echo -Wno-other ;;
2619             *)                       echo $flag ;;
2620         esac
2621     done
2622 }
2623
2624 msvc_common_flags(){
2625     for flag; do
2626         case $flag in
2627             # In addition to specifying certain flags under the compiler
2628             # specific filters, they must be specified here as well or else the
2629             # generic catch all at the bottom will print the original flag.
2630             -Wall)                ;;
2631             -std=c99)             ;;
2632             # Common flags
2633             -fomit-frame-pointer) ;;
2634             -g)                   echo -Z7 ;;
2635             -fno-math-errno)      ;;
2636             -fno-common)          ;;
2637             -fno-signed-zeros)    ;;
2638             -fPIC)                ;;
2639             -mthumb)              ;;
2640             -march=*)             ;;
2641             -lz)                  echo zlib.lib ;;
2642             -lavifil32)           echo vfw32.lib ;;
2643             -lavicap32)           echo vfw32.lib user32.lib ;;
2644             -l*)                  echo ${flag#-l}.lib ;;
2645             *)                    echo $flag ;;
2646         esac
2647     done
2648 }
2649
2650 msvc_flags(){
2651     msvc_common_flags "$@"
2652     for flag; do
2653         case $flag in
2654             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2655                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2656                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2657                                        -wd4273 ;;
2658         esac
2659     done
2660 }
2661
2662 icl_flags(){
2663     msvc_common_flags "$@"
2664     for flag; do
2665         case $flag in
2666             # Despite what Intel's documentation says -Wall, which is supported
2667             # on Windows, does enable remarks so disable them here.
2668             -Wall)                echo $flag -Qdiag-disable:remark ;;
2669             -std=c99)             echo -Qstd=c99 ;;
2670         esac
2671     done
2672 }
2673
2674 pgi_flags(){
2675     for flag; do
2676         case $flag in
2677             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2678             -fomit-frame-pointer) echo -Mnoframe ;;
2679             -g)                   echo -gopt ;;
2680             *)                    echo $flag ;;
2681         esac
2682     done
2683 }
2684
2685 suncc_flags(){
2686     for flag; do
2687         case $flag in
2688             -march=*|-mcpu=*)
2689                 case "${flag#*=}" in
2690                     native)                   echo -xtarget=native       ;;
2691                     v9|niagara)               echo -xarch=sparc          ;;
2692                     ultrasparc)               echo -xarch=sparcvis       ;;
2693                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2694                     i586|pentium)             echo -xchip=pentium        ;;
2695                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2696                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2697                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2698                     pentium4*)          echo -xtarget=pentium4           ;;
2699                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2700                     *-sse3)             echo -xarch=sse3                 ;;
2701                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2702                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2703                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2704                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2705                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2706                     k8|opteron|athlon64|athlon-fx)
2707                                                echo -xarch=sse2a         ;;
2708                     athlon*)                   echo -xarch=pentium_proa  ;;
2709                 esac
2710                 ;;
2711             -std=c99)             echo -xc99              ;;
2712             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2713             -fPIC)                echo -KPIC -xcode=pic32 ;;
2714             -W*,*)                echo $flag              ;;
2715             -f*-*|-W*|-mimpure-text)                      ;;
2716             -shared)              echo -G                 ;;
2717             *)                    echo $flag              ;;
2718         esac
2719     done
2720 }
2721
2722 tms470_flags(){
2723     for flag; do
2724         case $flag in
2725             -march=*|-mcpu=*)
2726                 case "${flag#*=}" in
2727                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2728                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2729                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2730                     armv6*|arm11*)          echo -mv=6   ;;
2731                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2732                                             echo -mv=5e  ;;
2733                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2734                 esac
2735                 ;;
2736             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2737             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2738             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2739             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2740             -msoft-float)   echo --float_support=vfplib       ;;
2741             -O[0-3]|-mf=*)  echo $flag                        ;;
2742             -g)             echo -g -mn                       ;;
2743             -pds=*)         echo $flag                        ;;
2744             -D*|-I*)        echo $flag                        ;;
2745             --gcc|--abi=*)  echo $flag                        ;;
2746             -me)            echo $flag                        ;;
2747         esac
2748     done
2749 }
2750
2751 probe_cc(){
2752     pfx=$1
2753     _cc=$2
2754
2755     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2756     unset _ld_o _ldflags _ld_lib _ld_path
2757     unset _depflags _DEPCMD _DEPFLAGS
2758     _flags_filter=echo
2759
2760     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2761         _type=llvm_gcc
2762         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2763         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2764         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2765         _cflags_speed='-O3'
2766         _cflags_size='-Os'
2767     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2768         _type=gcc
2769         gcc_version=$($_cc --version | head -n1)
2770         gcc_basever=$($_cc -dumpversion)
2771         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2772         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2773         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2774         if ! $_cc -dumpversion | grep -q '^2\.'; then
2775             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2776         fi
2777         _cflags_speed='-O3'
2778         _cflags_size='-Os'
2779     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2780         _type=icc
2781         _ident=$($_cc --version | head -n1)
2782         _depflags='-MMD'
2783         _cflags_speed='-O3'
2784         _cflags_size='-Os'
2785         _cflags_noopt='-O1'
2786     elif $_cc -v 2>&1 | grep -q xlc; then
2787         _type=xlc
2788         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2789         _cflags_speed='-O5'
2790         _cflags_size='-O5 -qcompact'
2791     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2792         _type=ccc
2793         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2794         _DEPFLAGS='-M'
2795         _cflags_speed='-fast'
2796         _cflags_size='-O1'
2797         _flags_filter=ccc_flags
2798     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2799         test -d "$sysroot" || die "No valid sysroot specified."
2800         _type=armcc
2801         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2802         armcc_conf="$PWD/armcc.conf"
2803         $_cc --arm_linux_configure                 \
2804              --arm_linux_config_file="$armcc_conf" \
2805              --configure_sysroot="$sysroot"        \
2806              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2807              die "Error creating armcc configuration file."
2808         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2809         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2810         as_default="${cross_prefix}gcc"
2811         _depflags='-MMD'
2812         _cflags_speed='-O3'
2813         _cflags_size='-Os'
2814     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2815         _type=tms470
2816         _ident=$($_cc -version | head -n1 | tr -s ' ')
2817         _flags='--gcc --abi=eabi -me'
2818         _cc_e='-ppl -fe=$@'
2819         _cc_o='-fe=$@'
2820         _depflags='-ppa -ppd=$(@:.o=.d)'
2821         _cflags_speed='-O3 -mf=5'
2822         _cflags_size='-O3 -mf=2'
2823         _flags_filter=tms470_flags
2824     elif $_cc -v 2>&1 | grep -q clang; then
2825         _type=clang
2826         _ident=$($_cc --version | head -n1)
2827         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2828         _cflags_speed='-O3'
2829         _cflags_size='-Os'
2830     elif $_cc -V 2>&1 | grep -q Sun; then
2831         _type=suncc
2832         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2833         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2834         _DEPFLAGS='-xM1 -xc99'
2835         _ldflags='-std=c99'
2836         _cflags_speed='-O5'
2837         _cflags_size='-O5 -xspace'
2838         _flags_filter=suncc_flags
2839     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2840         _type=pathscale
2841         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2842         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2843         _cflags_speed='-O2'
2844         _cflags_size='-Os'
2845         _flags_filter='filter_out -Wdisabled-optimization'
2846     elif $_cc -v 2>&1 | grep -q Open64; then
2847         _type=open64
2848         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2849         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2850         _cflags_speed='-O2'
2851         _cflags_size='-Os'
2852         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2853     elif $_cc -V 2>&1 | grep -q Portland; then
2854         _type=pgi
2855         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2856         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2857         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2858         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2859         _cflags_noopt="-O1"
2860         _flags_filter=pgi_flags
2861     elif $_cc 2>&1 | grep -q Microsoft; then
2862         _type=msvc
2863         _ident=$($cc 2>&1 | head -n1)
2864         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2865         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2866         _cflags_speed="-O2"
2867         _cflags_size="-O1"
2868         if $_cc 2>&1 | grep -q Linker; then
2869             _ld_o='-out:$@'
2870         else
2871             _ld_o='-Fe$@'
2872         fi
2873         _cc_o='-Fo$@'
2874         _cc_e='-P -Fi$@'
2875         _flags_filter=msvc_flags
2876         _ld_lib='lib%.a'
2877         _ld_path='-libpath:'
2878         _flags='-nologo'
2879         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2880         if [ $pfx = hostcc ]; then
2881             append _cflags -Dsnprintf=_snprintf
2882         fi
2883     elif $_cc 2>&1 | grep -q Intel; then
2884         _type=icl
2885         _ident=$($cc 2>&1 | head -n1)
2886         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2887         # Not only is O3 broken on 13.x+ but it is slower on all previous
2888         # versions (tested) as well.
2889         _cflags_speed="-O2"
2890         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2891         if $_cc 2>&1 | grep -q Linker; then
2892             _ld_o='-out:$@'
2893         else
2894             _ld_o='-Fe$@'
2895         fi
2896         _cc_o='-Fo$@'
2897         _cc_e='-P'
2898         _flags_filter=icl_flags
2899         _ld_lib='lib%.a'
2900         _ld_path='-libpath:'
2901         # -Qdiag-error to make icl error when seeing certain unknown arguments
2902         _flags='-nologo -Qdiag-error:4044,10157'
2903         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2904         # with MSVC which enables it by default.
2905         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2906         if [ $pfx = hostcc ]; then
2907             append _cflags -Dsnprintf=_snprintf
2908         fi
2909     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2910         _type=cparser
2911         _ident=$($_cc --version | head -n1)
2912         _depflags='-MMD'
2913         _cflags_speed='-O4'
2914         _cflags_size='-O2'
2915         _flags_filter=cparser_flags
2916     fi
2917
2918     eval ${pfx}_type=\$_type
2919     eval ${pfx}_ident=\$_ident
2920 }
2921
2922 set_ccvars(){
2923     eval ${1}_C=\${_cc_c-\${${1}_C}}
2924     eval ${1}_E=\${_cc_e-\${${1}_E}}
2925     eval ${1}_O=\${_cc_o-\${${1}_O}}
2926
2927     if [ -n "$_depflags" ]; then
2928         eval ${1}_DEPFLAGS=\$_depflags
2929     else
2930         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2931         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2932         eval DEP${1}FLAGS=\$_flags
2933     fi
2934 }
2935
2936 probe_cc cc "$cc"
2937 cflags_filter=$_flags_filter
2938 cflags_speed=$_cflags_speed
2939 cflags_size=$_cflags_size
2940 cflags_noopt=$_cflags_noopt
2941 add_cflags $_flags $_cflags
2942 cc_ldflags=$_ldflags
2943 set_ccvars CC
2944
2945 probe_cc hostcc "$host_cc"
2946 host_cflags_filter=$_flags_filter
2947 add_host_cflags  $_flags $_cflags
2948 set_ccvars HOSTCC
2949
2950 test -n "$cc_type" && enable $cc_type ||
2951     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2952
2953 : ${as_default:=$cc}
2954 : ${dep_cc_default:=$cc}
2955 : ${ld_default:=$cc}
2956 : ${host_ld_default:=$host_cc}
2957 set_default ar as dep_cc ld host_ld
2958
2959 probe_cc as "$as"
2960 asflags_filter=$_flags_filter
2961 add_asflags $_flags $_cflags
2962 set_ccvars AS
2963
2964 probe_cc ld "$ld"
2965 ldflags_filter=$_flags_filter
2966 add_ldflags $_flags $_ldflags
2967 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2968 LD_O=${_ld_o-$LD_O}
2969 LD_LIB=${_ld_lib-$LD_LIB}
2970 LD_PATH=${_ld_path-$LD_PATH}
2971
2972 probe_cc hostld "$host_ld"
2973 host_ldflags_filter=$_flags_filter
2974 add_host_ldflags $_flags $_ldflags
2975 HOSTLD_O=${_ld_o-$HOSTLD_O}
2976
2977 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2978     probe_cc depcc "$dep_cc"
2979     CCDEP=${_DEPCMD:-$DEPCMD}
2980     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2981     DEPCCFLAGS=$_flags
2982 fi
2983
2984 if $ar 2>&1 | grep -q Microsoft; then
2985     arflags="-nologo"
2986     ar_o='-out:$@'
2987 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2988     arflags="rq"
2989     ar_o='$@'
2990 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2991     arflags='-Xany -r -c'
2992     ar_o='$@'
2993 else
2994     arflags="rc"
2995     ar_o='$@'
2996 fi
2997
2998 add_cflags $extra_cflags
2999 add_asflags $extra_cflags
3000
3001 if test -n "$sysroot"; then
3002     case "$cc_type" in
3003         gcc|llvm_gcc|clang)
3004             add_cppflags --sysroot="$sysroot"
3005             add_ldflags --sysroot="$sysroot"
3006         ;;
3007         tms470)
3008             add_cppflags -I"$sysinclude"
3009             add_ldflags  --sysroot="$sysroot"
3010         ;;
3011     esac
3012 fi
3013
3014 if test "$cpu" = host; then
3015     enabled cross_compile &&
3016         die "--cpu=host makes no sense when cross-compiling."
3017
3018     case "$cc_type" in
3019         gcc|llvm_gcc)
3020             check_native(){
3021                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3022                 sed -n "/cc1.*$1=/{
3023                             s/.*$1=\\([^ ]*\\).*/\\1/
3024                             p
3025                             q
3026                         }" $TMPE
3027             }
3028             cpu=$(check_native -march || check_native -mcpu)
3029         ;;
3030     esac
3031
3032     test "${cpu:-host}" = host &&
3033         die "--cpu=host not supported with compiler $cc"
3034 fi
3035
3036 # Deal with common $arch aliases
3037 case "$arch" in
3038     aarch64|arm64)
3039         arch="aarch64"
3040     ;;
3041     arm*)
3042         arch="arm"
3043     ;;
3044     mips*|IP*)
3045         arch="mips"
3046     ;;
3047     parisc*|hppa*)
3048         arch="parisc"
3049     ;;
3050     "Power Macintosh"|ppc*|powerpc*)
3051         arch="ppc"
3052     ;;
3053     s390|s390x)
3054         arch="s390"
3055     ;;
3056     sh4|sh)
3057         arch="sh4"
3058     ;;
3059     sun4u|sparc*)
3060         arch="sparc"
3061     ;;
3062     tilegx|tile-gx)
3063         arch="tilegx"
3064     ;;
3065     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3066         arch="x86"
3067     ;;
3068 esac
3069
3070 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3071 enable $arch
3072
3073 # Add processor-specific flags
3074 if enabled aarch64; then
3075
3076     case $cpu in
3077         armv*)
3078             cpuflags="-march=$cpu"
3079         ;;
3080         *)
3081             cpuflags="-mcpu=$cpu"
3082         ;;
3083     esac
3084
3085 elif enabled alpha; then
3086
3087     cpuflags="-mcpu=$cpu"
3088
3089 elif enabled arm; then
3090
3091     check_arm_arch() {
3092         check_cpp_condition stddef.h \
3093             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3094             $cpuflags
3095     }
3096
3097     probe_arm_arch() {
3098         if   check_arm_arch 4;        then echo armv4;
3099         elif check_arm_arch 4T;       then echo armv4t;
3100         elif check_arm_arch 5;        then echo armv5;
3101         elif check_arm_arch 5E;       then echo armv5e;
3102         elif check_arm_arch 5T;       then echo armv5t;
3103         elif check_arm_arch 5TE;      then echo armv5te;
3104         elif check_arm_arch 5TEJ;     then echo armv5te;
3105         elif check_arm_arch 6;        then echo armv6;
3106         elif check_arm_arch 6J;       then echo armv6j;
3107         elif check_arm_arch 6K;       then echo armv6k;
3108         elif check_arm_arch 6Z;       then echo armv6z;
3109         elif check_arm_arch 6ZK;      then echo armv6zk;
3110         elif check_arm_arch 6T2;      then echo armv6t2;
3111         elif check_arm_arch 7;        then echo armv7;
3112         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3113         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3114         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3115         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3116         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3117         fi
3118     }
3119
3120     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3121
3122     case $cpu in
3123         armv*)
3124             cpuflags="-march=$cpu"
3125             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3126         ;;
3127         *)
3128             cpuflags="-mcpu=$cpu"
3129             case $cpu in
3130                 cortex-a*)                               subarch=armv7a  ;;
3131                 cortex-r*)                               subarch=armv7r  ;;
3132                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3133                 arm11*)                                  subarch=armv6   ;;
3134                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3135                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3136                 *)                             subarch=$(probe_arm_arch) ;;
3137             esac
3138         ;;
3139     esac
3140
3141     case "$subarch" in
3142         armv5t*)    enable fast_clz                ;;
3143         armv[6-8]*) enable fast_clz fast_unaligned ;;
3144     esac
3145
3146 elif enabled avr32; then
3147
3148     case $cpu in
3149         ap7[02]0[0-2])
3150             subarch="avr32_ap"
3151             cpuflags="-mpart=$cpu"
3152         ;;
3153         ap)
3154             subarch="avr32_ap"
3155             cpuflags="-march=$cpu"
3156         ;;
3157         uc3[ab]*)
3158             subarch="avr32_uc"
3159             cpuflags="-mcpu=$cpu"
3160         ;;
3161         uc)
3162             subarch="avr32_uc"
3163             cpuflags="-march=$cpu"
3164         ;;
3165     esac
3166
3167 elif enabled bfin; then
3168
3169     cpuflags="-mcpu=$cpu"
3170
3171 elif enabled mips; then
3172
3173     cpuflags="-march=$cpu"
3174
3175 elif enabled ppc; then
3176
3177     disable ldbrx
3178
3179     case $(tolower $cpu) in
3180         601|ppc601|powerpc601)
3181             cpuflags="-mcpu=601"
3182             disable altivec
3183         ;;
3184         603*|ppc603*|powerpc603*)
3185             cpuflags="-mcpu=603"
3186             disable altivec
3187         ;;
3188         604*|ppc604*|powerpc604*)
3189             cpuflags="-mcpu=604"
3190             disable altivec
3191         ;;
3192         g3|75*|ppc75*|powerpc75*)
3193             cpuflags="-mcpu=750"
3194             disable altivec
3195         ;;
3196         g4|745*|ppc745*|powerpc745*)
3197             cpuflags="-mcpu=7450"
3198         ;;
3199         74*|ppc74*|powerpc74*)
3200             cpuflags="-mcpu=7400"
3201         ;;
3202         g5|970|ppc970|powerpc970)
3203             cpuflags="-mcpu=970"
3204         ;;
3205         power[3-7]*)
3206             cpuflags="-mcpu=$cpu"
3207         ;;
3208         cell)
3209             cpuflags="-mcpu=cell"
3210             enable ldbrx
3211         ;;
3212         e500mc)
3213             cpuflags="-mcpu=e500mc"
3214             disable altivec
3215         ;;
3216         e500v2)
3217             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3218             disable altivec
3219             disable dcbzl
3220         ;;
3221         e500)
3222             cpuflags="-mcpu=8540 -mhard-float"
3223             disable altivec
3224             disable dcbzl
3225         ;;
3226     esac
3227
3228 elif enabled sparc; then
3229
3230     case $cpu in
3231         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3232             cpuflags="-mcpu=$cpu"
3233         ;;
3234         ultrasparc*|niagara[234])
3235             cpuflags="-mcpu=$cpu"
3236         ;;
3237     esac
3238
3239 elif enabled x86; then
3240
3241     case $cpu in
3242         i[345]86|pentium)
3243             cpuflags="-march=$cpu"
3244             disable mmx
3245         ;;
3246         # targets that do NOT support nopl and conditional mov (cmov)
3247         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3248             cpuflags="-march=$cpu"
3249             disable i686
3250         ;;
3251         # targets that do support nopl and conditional mov (cmov)
3252         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3253             cpuflags="-march=$cpu"
3254             enable i686
3255             enable fast_cmov
3256         ;;
3257         # targets that do support conditional mov but on which it's slow
3258         pentium4|pentium4m|prescott|nocona)
3259             cpuflags="-march=$cpu"
3260             enable i686
3261             disable fast_cmov
3262         ;;
3263     esac
3264
3265 fi
3266
3267 if [ "$cpu" != generic ]; then
3268     add_cflags  $cpuflags
3269     add_asflags $cpuflags
3270 fi
3271
3272 # compiler sanity check
3273 check_exec <<EOF
3274 int main(void){ return 0; }
3275 EOF
3276 if test "$?" != 0; then
3277     echo "$cc is unable to create an executable file."
3278     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3279         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3280         echo "Only do this if you know what cross compiling means."
3281     fi
3282     die "C compiler test failed."
3283 fi
3284
3285 add_cppflags -D_ISOC99_SOURCE
3286 check_cflags -std=c99
3287 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3288 #include <stdlib.h>
3289 EOF
3290 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3291 #include <stdlib.h>
3292 EOF
3293
3294 add_host_cppflags -D_ISOC99_SOURCE
3295 check_host_cflags -std=c99
3296 check_host_cflags -Wall
3297 check_host_cflags -O3
3298
3299 check_64bit(){
3300     arch32=$1
3301     arch64=$2
3302     expr=$3
3303     check_code cc "" "int test[2*($expr) - 1]" &&
3304         subarch=$arch64 || subarch=$arch32
3305 }
3306
3307 case "$arch" in
3308     aarch64|alpha|ia64)
3309         spic=$shared
3310     ;;
3311     mips)
3312         check_64bit mips mips64 '_MIPS_SIM > 1'
3313         spic=$shared
3314     ;;
3315     parisc)
3316         check_64bit parisc parisc64 'sizeof(void *) > 4'
3317         spic=$shared
3318     ;;
3319     ppc)
3320         check_64bit ppc ppc64 'sizeof(void *) > 4'
3321         spic=$shared
3322     ;;
3323     s390)
3324         check_64bit s390 s390x 'sizeof(void *) > 4'
3325         spic=$shared
3326     ;;
3327     sparc)
3328         check_64bit sparc sparc64 'sizeof(void *) > 4'
3329         spic=$shared
3330     ;;
3331     x86)
3332         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3333         if test "$subarch" = "x86_64"; then
3334             spic=$shared
3335         fi
3336     ;;
3337 esac
3338
3339 enable $subarch
3340 enabled spic && enable_weak pic
3341
3342 # OS specific
3343 case $target_os in
3344     aix)
3345         SHFLAGS=-shared
3346         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3347         enabled shared && add_ldflags -Wl,-brtl
3348         ;;
3349     android)
3350         disable symver
3351         SLIB_INSTALL_NAME='$(SLIBNAME)'
3352         SLIB_INSTALL_LINKS=
3353         # soname not set on purpose
3354         SHFLAGS=-shared
3355         ;;
3356     haiku)
3357         prefix_default="/boot/common"
3358         network_extralibs="-lnetwork"
3359         host_libs=
3360         ;;
3361     sunos)
3362         SHFLAGS='-shared -Wl,-h,$$(@F)'
3363         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3364         network_extralibs="-lsocket -lnsl"
3365         # When using suncc to build, the Solaris linker will mark
3366         # an executable with each instruction set encountered by
3367         # the Solaris assembler.  As our libraries contain their own
3368         # guards for processor-specific code, instead suppress
3369         # generation of the HWCAPS ELF section on Solaris x86 only.
3370         enabled_all suncc x86 &&
3371             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3372             add_ldflags -Wl,-M,mapfile
3373         nm_default='nm -P -g'
3374         ;;
3375     netbsd)
3376         disable symver
3377         oss_indev_extralibs="-lossaudio"
3378         oss_outdev_extralibs="-lossaudio"
3379         ;;
3380     openbsd|bitrig)
3381         disable symver
3382         SHFLAGS='-shared'
3383         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3384         SLIB_INSTALL_LINKS=
3385         oss_indev_extralibs="-lossaudio"
3386         oss_outdev_extralibs="-lossaudio"
3387         ;;
3388     dragonfly)
3389         disable symver
3390         ;;
3391     freebsd)
3392         ;;
3393     bsd/os)
3394         add_extralibs -lpoll -lgnugetopt
3395         ;;
3396     darwin)
3397         gas="gas-preprocessor.pl $cc"
3398         enabled ppc && add_asflags -force_cpusubtype_ALL
3399         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3400         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3401         add_ldflags -Wl,-dynamic,-search_paths_first
3402         SLIBSUF=".dylib"
3403         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3404         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3405         objformat="macho"
3406         enabled x86_64 && objformat="macho64"
3407         enabled_any pic shared ||
3408             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3409         ;;
3410     mingw32*)
3411         if test $target_os = "mingw32ce"; then
3412             disable network
3413         else
3414             target_os=mingw32
3415         fi
3416         LIBTARGET=i386
3417         if enabled x86_64; then
3418             LIBTARGET="i386:x86-64"
3419         elif enabled arm; then
3420             LIBTARGET=arm-wince
3421         fi
3422         check_ldflags -Wl,--nxcompat
3423         check_ldflags -Wl,--dynamicbase
3424         shlibdir_default="$bindir_default"
3425         SLIBPREF=""
3426         SLIBSUF=".dll"
3427         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3428         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3429         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3430         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3431         SLIB_INSTALL_LINKS=
3432         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3433         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3434         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3435         objformat="win32"
3436         dlltool="${cross_prefix}dlltool"
3437         ranlib=:
3438         enable dos_paths
3439         ;;
3440     win32|win64)
3441         disable symver
3442         if enabled shared; then
3443             # Link to the import library instead of the normal static library
3444             # for shared libs.
3445             LD_LIB='%.lib'
3446             # Cannot build both shared and static libs with MSVC or icl.
3447             disable static
3448         fi
3449         shlibdir_default="$bindir_default"
3450         SLIBPREF=""
3451         SLIBSUF=".dll"
3452         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3453         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3454         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3455         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3456         SLIB_INSTALL_LINKS=
3457         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3458         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3459         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3460         objformat="win32"
3461         ranlib=:
3462         enable dos_paths
3463         ;;
3464     cygwin*)
3465         target_os=cygwin
3466         shlibdir_default="$bindir_default"
3467         SLIBPREF="cyg"
3468         SLIBSUF=".dll"
3469         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3470         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3471         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3472         SLIB_INSTALL_LINKS=
3473         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3474         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3475         objformat="win32"
3476         enable dos_paths
3477         ;;
3478     *-dos|freedos|opendos)
3479         network_extralibs="-lsocket"
3480         objformat="coff"
3481         enable dos_paths
3482         add_cppflags -U__STRICT_ANSI__
3483         ;;
3484     linux)
3485         enable dv1394
3486         ;;
3487     irix*)
3488         target_os=irix
3489         ranlib="echo ignoring ranlib"
3490         ;;
3491     os/2*)
3492         ln_s="cp -f"
3493         objformat="aout"
3494         add_cppflags -D_GNU_SOURCE
3495         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3496         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3497         LIBSUF="_s.a"
3498         SLIBPREF=""
3499         SLIBSUF=".dll"
3500         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3501         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3502         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3503             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3504             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3505             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3506             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3507             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3508         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3509             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3510         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3511         enable dos_paths
3512         ;;
3513     gnu/kfreebsd)
3514         add_cppflags -D_BSD_SOURCE
3515         ;;
3516     gnu)
3517         ;;
3518     qnx)
3519         add_cppflags -D_QNX_SOURCE
3520         network_extralibs="-lsocket"
3521         ;;
3522     symbian)
3523         SLIBSUF=".dll"
3524         enable dos_paths
3525         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3526         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3527         add_ldflags -Wl,--target1-abs,--no-undefined \
3528                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3529                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3530         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3531                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3532                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3533         ;;
3534     osf1)
3535         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3536         ;;
3537     minix)
3538         ;;
3539     plan9)
3540         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3541                      -D_REENTRANT_SOURCE        \
3542                      -D_RESEARCH_SOURCE         \
3543                      -DFD_SETSIZE=96            \
3544                      -DHAVE_SOCK_OPTS
3545         add_compat strtod.o strtod=avpriv_strtod
3546         network_extralibs='-lbsd'
3547         exeobjs=compat/plan9/main.o
3548         cp_f='cp'
3549         ;;
3550     none)
3551         ;;
3552     *)
3553         die "Unknown OS '$target_os'."
3554         ;;
3555 esac
3556
3557 # determine libc flavour
3558
3559 probe_libc(){
3560     pfx=$1
3561     pfx_no_=${pfx%_}
3562     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3563     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3564         eval ${pfx}libc_type=uclibc
3565         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3566     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3567         eval ${pfx}libc_type=glibc
3568         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3569     # MinGW headers can be installed on Cygwin, so check for newlib first.
3570     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3571         eval ${pfx}libc_type=newlib
3572         add_${pfx}cppflags -U__STRICT_ANSI__
3573     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3574     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3575         eval ${pfx}libc_type=mingw64
3576         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3577         eval test \$${pfx_no_}cc_type = "gcc" &&
3578             add_${pfx}cppflags -D__printf__=__gnu_printf__
3579     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3580          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3581         eval ${pfx}libc_type=mingw32
3582         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3583             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3584             die "ERROR: MinGW32 runtime version must be >= 3.15."
3585         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3586         eval test \$${pfx_no_}cc_type = "gcc" &&
3587             add_${pfx}cppflags -D__printf__=__gnu_printf__
3588     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3589         eval ${pfx}libc_type=msvcrt
3590         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3591         # 0x601 by default unless something else is set by the user.
3592         # This can easily lead to us detecting functions only present
3593         # in such new versions and producing binaries requiring windows 7.0.
3594         # Therefore explicitly set the default to XP unless the user has
3595         # set something else on the command line.
3596         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3597             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3598     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3599         eval ${pfx}libc_type=klibc
3600     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3601         eval ${pfx}libc_type=bionic
3602     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3603         eval ${pfx}libc_type=solaris
3604         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3605     fi
3606 }
3607
3608 probe_libc
3609 test -n "$libc_type" && enable libc_$libc_type
3610 probe_libc host_
3611 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3612
3613 case $libc_type in
3614     bionic)
3615         add_compat strtod.o strtod=avpriv_strtod
3616         ;;
3617     msvcrt)
3618         add_compat strtod.o strtod=avpriv_strtod
3619         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3620                                      _snprintf=avpriv_snprintf  \
3621                                      vsnprintf=avpriv_vsnprintf
3622         ;;
3623 esac
3624
3625 # hacks for compiler/libc/os combinations
3626
3627 if enabled_all tms470 libc_glibc; then
3628     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3629     add_cppflags -D__USER_LABEL_PREFIX__=
3630     add_cppflags -D__builtin_memset=memset
3631     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3632     add_cflags   -pds=48    # incompatible redefinition of macro
3633 fi
3634
3635 if enabled_all ccc libc_glibc; then
3636     add_ldflags -Wl,-z,now  # calls to libots crash without this
3637 fi
3638
3639 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3640     add_cppflags '-I\$(SRC_PATH)/compat/float'
3641
3642 esc(){
3643     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3644 }
3645
3646 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3647
3648 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3649
3650 set_default $PATHS_LIST
3651 set_default nm
3652
3653 # we need to build at least one lib type
3654 if ! enabled_any static shared; then
3655     cat <<EOF
3656 At least one library type must be built.
3657 Specify --enable-static to build the static libraries or --enable-shared to
3658 build the shared libraries as well. To only build the shared libraries specify
3659 --disable-static in addition to --enable-shared.
3660 EOF
3661     exit 1;
3662 fi
3663
3664 die_license_disabled() {
3665     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3666 }
3667
3668 die_license_disabled gpl libcdio
3669 die_license_disabled gpl libx264
3670 die_license_disabled gpl libx265
3671 die_license_disabled gpl libxavs
3672 die_license_disabled gpl libxvid
3673 die_license_disabled gpl x11grab
3674
3675 die_license_disabled nonfree libfaac
3676 die_license_disabled nonfree libfdk_aac
3677 die_license_disabled nonfree openssl
3678
3679 die_license_disabled version3 libopencore_amrnb
3680 die_license_disabled version3 libopencore_amrwb
3681 die_license_disabled version3 libvo_aacenc
3682 die_license_disabled version3 libvo_amrwbenc
3683
3684 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3685
3686 disabled optimizations || check_cflags -fomit-frame-pointer
3687
3688 enable_weak_pic() {
3689     disabled pic && return
3690     enable pic
3691     add_cppflags -DPIC
3692     case "$target_os" in
3693     mingw*|cygwin*)
3694         ;;
3695     *)
3696         add_cflags -fPIC
3697         ;;
3698     esac
3699     add_asflags  -fPIC
3700 }
3701
3702 enabled pic && enable_weak_pic
3703
3704 check_cc <<EOF || die "Symbol mangling check failed."
3705 int ff_extern;
3706 EOF
3707 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3708 extern_prefix=${sym%%ff_extern*}
3709
3710 check_cc <<EOF && enable_weak inline_asm
3711 void foo(void) { __asm__ volatile ("" ::); }
3712 EOF
3713
3714 _restrict=
3715 for restrict_keyword in restrict __restrict__ __restrict; do
3716     check_cc <<EOF && _restrict=$restrict_keyword && break
3717 void foo(char * $restrict_keyword p);
3718 EOF
3719 done
3720
3721 check_cc <<EOF && enable pragma_deprecated
3722 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3723 EOF
3724
3725 check_cc <<EOF && enable attribute_packed
3726 struct { int x; } __attribute__((packed)) x;
3727 EOF
3728
3729 check_cc <<EOF && enable attribute_may_alias
3730 union { int x; } __attribute__((may_alias)) x;
3731 EOF
3732
3733 check_cc <<EOF || die "endian test failed"
3734 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3735 EOF
3736 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3737
3738
3739 if enabled asm; then
3740     enabled     arm         && nogas=die
3741     enabled_all ppc altivec && nogas=warn
3742     as=${gas:=$as}
3743     check_as <<EOF && enable gnu_as || \
3744         $nogas "GNU assembler not found, install gas-preprocessor"
3745 .macro m n
3746 \n: .int 0
3747 .endm
3748 m x
3749 EOF
3750
3751     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3752 .altmacro
3753 EOF
3754
3755     check_as <<EOF && enable as_func
3756 .func test
3757 .endfunc
3758 EOF
3759 fi
3760
3761 check_inline_asm inline_asm_labels '"1:\n"'
3762
3763 if enabled aarch64; then
3764     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3765     # internal assembler in clang 3.3 does not support this instruction
3766     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3767     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3768
3769     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3770
3771 elif enabled alpha; then
3772
3773     check_cflags -mieee
3774
3775 elif enabled arm; then
3776
3777     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3778     enabled thumb && check_cflags -mthumb || check_cflags -marm
3779
3780     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3781         enable vfp_args
3782     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3783         case "${cross_prefix:-$cc}" in
3784             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3785             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3786 __asm__ (".eabi_attribute 28, 1");
3787 int main(void) { return 0; }
3788 EOF
3789         esac
3790         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3791     fi
3792
3793     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3794     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3795     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3796     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3797     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3798     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3799
3800     [ $target_os = linux ] ||
3801         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3802             $ARCH_EXT_LIST_ARM
3803
3804     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3805
3806     check_as <<EOF && enable as_dn_directive
3807 ra .dn d0.i16
3808 .unreq ra
3809 EOF
3810
3811     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3812
3813 elif enabled mips; then
3814
3815     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3816
3817 elif enabled parisc; then
3818
3819     if enabled gcc; then
3820         case $($cc -dumpversion) in
3821             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3822         esac
3823     fi
3824
3825 elif enabled ppc; then
3826
3827     enable local_aligned_8 local_aligned_16
3828
3829     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3830     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3831     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3832     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3833
3834     # AltiVec flags: The FSF version of GCC differs from the Apple version
3835     if enabled altivec; then
3836         check_cflags -maltivec -mabi=altivec &&
3837         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3838         check_cflags -faltivec
3839
3840         # check if our compiler supports Motorola AltiVec C API
3841         check_cc <<EOF || disable altivec
3842 $inc_altivec_h
3843 int main(void) {
3844     vector signed int v1 = (vector signed int) { 0 };
3845     vector signed int v2 = (vector signed int) { 1 };
3846     v1 = vec_add(v1, v2);
3847     return 0;
3848 }
3849 EOF
3850
3851         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3852     fi
3853
3854 elif enabled x86; then
3855
3856     check_builtin rdtsc    intrin.h   "__rdtsc()"
3857     check_builtin mm_empty mmintrin.h "_mm_empty()"
3858
3859     enable local_aligned_8 local_aligned_16
3860
3861     # check whether EBP is available on x86
3862     # As 'i' is stored on the stack, this program will crash
3863     # if the base pointer is used to access it because the
3864     # base pointer is cleared in the inline assembly code.
3865     check_exec_crash <<EOF && enable ebp_available
3866 volatile int i=0;
3867 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3868 return i;
3869 EOF
3870
3871     # check whether EBX is available on x86
3872     check_inline_asm ebx_available '""::"b"(0)' &&
3873         check_inline_asm ebx_available '"":::"%ebx"'
3874
3875     # check whether xmm clobbers are supported
3876     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3877
3878     # check whether binutils is new enough to compile SSSE3/MMXEXT
3879     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3880     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3881
3882     if ! disabled_any asm mmx yasm; then
3883         if check_cmd $yasmexe --version; then
3884             enabled x86_64 && yasm_extra="-m amd64"
3885             yasm_debug="-g dwarf2"
3886         elif check_cmd nasm -v; then
3887             yasmexe=nasm
3888             yasm_debug="-g -F dwarf"
3889             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3890         fi
3891
3892         YASMFLAGS="-f $objformat $yasm_extra"
3893         enabled pic               && append YASMFLAGS "-DPIC"
3894         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3895         case "$objformat" in
3896             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3897         esac
3898
3899         check_yasm "movbe ecx, [5]" && enable yasm ||
3900             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3901         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3902         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3903         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3904         check_yasm "CPU amdnop" || disable cpunop
3905     fi
3906
3907     case "$cpu" in
3908         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3909             disable fast_clz
3910         ;;
3911     esac
3912
3913 fi
3914
3915 check_ldflags -Wl,--as-needed
3916
3917 if check_func dlopen; then
3918     ldl=
3919 elif check_func dlopen -ldl; then
3920     ldl=-ldl
3921 fi
3922
3923 if ! disabled network; then
3924     check_func getaddrinfo $network_extralibs
3925     check_func getservbyport $network_extralibs
3926     check_func inet_aton $network_extralibs
3927
3928     check_type netdb.h "struct addrinfo"
3929     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3930     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3931     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3932     check_type poll.h "struct pollfd"
3933     check_type netinet/sctp.h "struct sctp_event_subscribe"
3934     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3935     check_type netinet/in.h "struct sockaddr_in6"
3936     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3937     check_type "sys/types.h sys/socket.h" socklen_t
3938
3939     # Prefer arpa/inet.h over winsock2
3940     if check_header arpa/inet.h ; then
3941         check_func closesocket
3942     elif check_header winsock2.h ; then
3943         check_func_headers winsock2.h closesocket -lws2 &&
3944             network_extralibs="-lws2" ||
3945         { check_func_headers winsock2.h closesocket -lws2_32 &&
3946             network_extralibs="-lws2_32"; } || disable winsock2_h network
3947         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3948
3949         check_type ws2tcpip.h socklen_t
3950         check_type ws2tcpip.h "struct addrinfo"
3951         check_type ws2tcpip.h "struct group_source_req"
3952         check_type ws2tcpip.h "struct ip_mreq_source"
3953         check_type ws2tcpip.h "struct ipv6_mreq"
3954         check_type winsock2.h "struct pollfd"
3955         check_struct winsock2.h "struct sockaddr" sa_len
3956         check_type ws2tcpip.h "struct sockaddr_in6"
3957         check_type ws2tcpip.h "struct sockaddr_storage"
3958     else
3959         disable network
3960     fi
3961 fi
3962
3963 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3964 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3965 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3966 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3967
3968 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3969 check_func  ${malloc_prefix}memalign            && enable memalign
3970 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3971
3972 check_func  fcntl
3973 check_func  fork
3974 check_func  gethrtime
3975 check_func  getopt
3976 check_func  getrusage
3977 check_func  gettimeofday
3978 check_func  isatty
3979 check_func  localtime_r
3980 check_func  mach_absolute_time
3981 check_func  mkstemp
3982 check_func  mmap
3983 check_func  mprotect
3984 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3985 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3986 check_func  sched_getaffinity
3987 check_func  setrlimit
3988 check_func  strerror_r
3989 check_func  strptime
3990 check_func  sysconf
3991 check_func  sysctl
3992 check_func  usleep
3993
3994 check_func_headers io.h setmode
3995 check_func_headers stdlib.h getenv
3996
3997 check_func_headers windows.h CoTaskMemFree -lole32
3998 check_func_headers windows.h GetProcessAffinityMask
3999 check_func_headers windows.h GetProcessTimes
4000 check_func_headers windows.h GetSystemTimeAsFileTime
4001 check_func_headers windows.h MapViewOfFile
4002 check_func_headers windows.h SetConsoleTextAttribute
4003 check_func_headers windows.h Sleep
4004 check_func_headers windows.h VirtualAlloc
4005
4006 check_header direct.h
4007 check_header dlfcn.h
4008 check_header dxva.h
4009 check_header dxva2api.h
4010 check_header io.h
4011 check_header mach/mach_time.h
4012 check_header malloc.h
4013 check_header poll.h
4014 check_header sys/mman.h
4015 check_header sys/param.h
4016 check_header sys/resource.h
4017 check_header sys/select.h
4018 check_header sys/time.h
4019 check_header sys/un.h
4020 check_header unistd.h
4021 check_header vdpau/vdpau.h
4022 check_header vdpau/vdpau_x11.h
4023 check_header VideoDecodeAcceleration/VDADecoder.h
4024 check_header windows.h
4025 check_header X11/extensions/XvMClib.h
4026
4027 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4028 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4029 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4030
4031 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4032
4033 if ! disabled w32threads && ! enabled pthreads; then
4034     check_func_headers "windows.h process.h" _beginthreadex &&
4035         enable w32threads || disable w32threads
4036 fi
4037
4038 # check for some common methods of building with pthread support
4039 # do this before the optional library checks as some of them require pthreads
4040 if ! disabled pthreads && ! enabled w32threads; then
4041     enable pthreads
4042     if check_func pthread_join -pthread; then
4043         add_cflags -pthread
4044         add_extralibs -pthread
4045     elif check_func pthread_join -pthreads; then
4046         add_cflags -pthreads
4047         add_extralibs -pthreads
4048     elif check_func pthread_join -lpthreadGC2; then
4049         add_extralibs -lpthreadGC2
4050     elif check_lib pthread.h pthread_join -lpthread; then
4051         :
4052     elif ! check_func pthread_join; then
4053         disable pthreads
4054     fi
4055 fi
4056
4057 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4058 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4059
4060 check_lib math.h sin -lm && LIBM="-lm"
4061 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4062
4063 atan2f_args=2
4064 ldexpf_args=2
4065 powf_args=2
4066
4067 for func in $MATH_FUNCS; do
4068     eval check_mathfunc $func \${${func}_args:-1}
4069 done
4070
4071 # these are off by default, so fail if requested and not available
4072 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4073                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4074                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4075 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4076 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4077 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4078 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4079 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4080 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4081 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4082 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4083                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4084                                done || die "ERROR: libgsm not found"; }
4085 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4086 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4087 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4088 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4089 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4090 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4091                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4092 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4093 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4094 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4095 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4096 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4097 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4098 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4099 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4100 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4101 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4102 enabled libvpx            && {
4103     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4104                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4105     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4106                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4107     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4108     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4109 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4110 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4111 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4112                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4113                                die "ERROR: libx264 version must be >= 0.118."; }
4114 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4115                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4116                                die "ERROR: libx265 version must be >= 17."; }
4117 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4118 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4119 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4120                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4121                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4122                                die "ERROR: openssl not found"; }
4123
4124 if enabled gnutls; then
4125     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4126     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4127 fi
4128
4129 # libdc1394 check
4130 if enabled libdc1394; then
4131     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4132         enable libdc1394_2; } ||
4133     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4134         enable libdc1394_1; } ||
4135     die "ERROR: No version of libdc1394 found "
4136 fi
4137
4138 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4139     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4140     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4141     enable sdl
4142 fi
4143
4144 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4145 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4146
4147 check_header linux/fb.h
4148 check_header linux/videodev2.h
4149 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4150
4151 check_header sys/videoio.h
4152
4153 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4154 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4155 # w32api 3.12 had it defined wrong
4156 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4157
4158 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4159 { check_header dev/bktr/ioctl_meteor.h &&
4160   check_header dev/bktr/ioctl_bt848.h; } ||
4161 { check_header machine/ioctl_meteor.h &&
4162   check_header machine/ioctl_bt848.h; } ||
4163 { check_header dev/video/meteor/ioctl_meteor.h &&
4164   check_header dev/video/bktr/ioctl_bt848.h; } ||
4165 check_header dev/ic/bt8xx.h
4166
4167 check_header sndio.h
4168 check_header sys/soundcard.h
4169 check_header soundcard.h
4170
4171 enabled_any alsa_indev alsa_outdev &&
4172     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4173
4174 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4175     check_func jack_port_get_latency_range -ljack
4176
4177 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4178
4179 if enabled libcdio; then
4180     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4181     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4182 fi
4183
4184 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4185
4186 enabled x11grab                                           &&
4187 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4188 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4189 { enabled xlib || die "ERROR: Xlib not found"; }
4190
4191 enabled vdpau &&
4192     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4193     disable vdpau
4194
4195 enabled vdpau && enabled xlib &&
4196     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4197     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4198     enable vdpau_x11
4199
4200 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4201
4202 # add some useful compiler flags if supported
4203 check_cflags -Wdeclaration-after-statement
4204 check_cflags -Wall
4205 check_cflags -Wdisabled-optimization
4206 check_cflags -Wpointer-arith
4207 check_cflags -Wredundant-decls
4208 check_cflags -Wcast-qual
4209 check_cflags -Wwrite-strings
4210 check_cflags -Wtype-limits
4211 check_cflags -Wundef
4212 check_cflags -Wmissing-prototypes
4213 check_cflags -Wstrict-prototypes
4214 enabled extra_warnings && check_cflags -Winline
4215
4216 check_disable_warning(){
4217     warning_flag=-W${1#-Wno-}
4218     test_cflags $warning_flag && add_cflags $1
4219 }
4220
4221 check_disable_warning -Wno-parentheses
4222 check_disable_warning -Wno-switch
4223 check_disable_warning -Wno-format-zero-length
4224 check_disable_warning -Wno-pointer-sign
4225
4226 # add some linker flags
4227 check_ldflags -Wl,--warn-common
4228 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4229 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4230
4231 # add some strip flags
4232 # -wN '..@*' is more selective than -x, but not available everywhere.
4233 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4234
4235 enabled neon_clobber_test &&
4236     check_ldflags -Wl,--wrap,avcodec_open2              \
4237                   -Wl,--wrap,avcodec_decode_audio4      \
4238                   -Wl,--wrap,avcodec_decode_video2      \
4239                   -Wl,--wrap,avcodec_decode_subtitle2   \
4240                   -Wl,--wrap,avcodec_encode_audio2      \
4241                   -Wl,--wrap,avcodec_encode_video2      \
4242                   -Wl,--wrap,avcodec_encode_subtitle    \
4243                   -Wl,--wrap,avresample_convert ||
4244     disable neon_clobber_test
4245
4246 enabled xmm_clobber_test &&
4247     check_ldflags -Wl,--wrap,avcodec_open2              \
4248                   -Wl,--wrap,avcodec_decode_audio4      \
4249                   -Wl,--wrap,avcodec_decode_video2      \
4250                   -Wl,--wrap,avcodec_decode_subtitle2   \
4251                   -Wl,--wrap,avcodec_encode_audio2      \
4252                   -Wl,--wrap,avcodec_encode_video2      \
4253                   -Wl,--wrap,avcodec_encode_subtitle    \
4254                   -Wl,--wrap,avresample_convert         \
4255                   -Wl,--wrap,sws_scale ||
4256     disable xmm_clobber_test
4257
4258 echo "X{};" > $TMPV
4259 if test_ldflags -Wl,--version-script,$TMPV; then
4260     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4261     check_cc <<EOF && enable symver_asm_label
4262 void ff_foo(void) __asm__ ("av_foo@VERSION");
4263 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4264 EOF
4265     check_cc <<EOF && enable symver_gnu_asm
4266 __asm__(".symver ff_foo,av_foo@VERSION");
4267 void ff_foo(void) {}
4268 EOF
4269 fi
4270
4271 if [ -z "$optflags" ]; then
4272     if enabled small; then
4273         optflags=$cflags_size
4274     elif enabled optimizations; then
4275         optflags=$cflags_speed
4276     else
4277         optflags=$cflags_noopt
4278     fi
4279 fi
4280
4281 check_optflags(){
4282     check_cflags "$@"
4283     enabled lto && check_ldflags "$@"
4284 }
4285
4286
4287 if enabled lto; then
4288     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4289     check_cflags  -flto
4290     check_ldflags -flto $cpuflags
4291 fi
4292
4293 check_optflags $optflags
4294 check_optflags -fno-math-errno
4295 check_optflags -fno-signed-zeros
4296
4297 if enabled icc; then
4298     # Just warnings, no remarks
4299     check_cflags -w1
4300     # -wd: Disable following warnings
4301     # 144, 167, 556: -Wno-pointer-sign
4302     # 1292: attribute "foo" ignored
4303     # 1419: external declaration in primary source file
4304     # 10006: ignoring unknown option -fno-signed-zeros
4305     # 10148: ignoring unknown option -Wno-parentheses
4306     # 10156: ignoring option '-W'; no argument required
4307     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4308     # 11030: Warning unknown option --as-needed
4309     # 10156: ignoring option '-export'; no argument required
4310     check_ldflags -wd10156,11030
4311     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4312     enable ebp_available
4313     if enabled x86_32; then
4314         icc_version=$($cc -dumpversion)
4315         test ${icc_version%%.*} -ge 11 &&
4316             check_cflags -falign-stack=maintain-16-byte ||
4317             disable aligned_stack
4318     fi
4319 elif enabled ccc; then
4320     # disable some annoying warnings
4321     add_cflags -msg_disable bitnotint
4322     add_cflags -msg_disable mixfuncvoid
4323     add_cflags -msg_disable nonstandcast
4324     add_cflags -msg_disable unsupieee
4325 elif enabled gcc; then
4326     check_optflags -fno-tree-vectorize
4327     check_cflags -Werror=implicit-function-declaration
4328     check_cflags -Werror=missing-prototypes
4329     check_cflags -Werror=return-type
4330     check_cflags -Werror=declaration-after-statement
4331     check_cflags -Werror=vla
4332     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4333 elif enabled llvm_gcc; then
4334     check_cflags -mllvm -stack-alignment=16
4335 elif enabled clang; then
4336     check_cflags -mllvm -stack-alignment=16
4337     check_cflags -Qunused-arguments
4338     check_cflags -Werror=implicit-function-declaration
4339     check_cflags -Werror=missing-prototypes
4340     check_cflags -Werror=return-type
4341 elif enabled cparser; then
4342     add_cflags -Wno-missing-variable-declarations
4343     add_cflags -Wno-empty-statement
4344 elif enabled armcc; then
4345     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4346     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4347     # 2523: use of inline assembly is deprecated
4348     add_cflags -W${armcc_opt},--diag_suppress=2523
4349     add_cflags -W${armcc_opt},--diag_suppress=1207
4350     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4351     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4352     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4353     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4354 elif enabled tms470; then
4355     add_cflags -pds=824 -pds=837
4356     disable inline_asm
4357 elif enabled pathscale; then
4358     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4359 elif enabled_any msvc icl; then
4360     enabled x86_32 && disable aligned_stack
4361     enabled_all x86_32 debug && add_cflags -Oy-
4362     enabled debug && add_ldflags -debug
4363     enable pragma_deprecated
4364     if enabled icl; then
4365         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4366         # (correctly) on icl 13.x.
4367         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4368             add_cflags -Qansi-alias
4369         # icl will pass the inline asm tests but inline asm is currently
4370         # not supported (build will fail)
4371         disable inline_asm
4372     fi
4373 fi
4374
4375 case $as_type in
4376     clang)
4377         add_asflags -Qunused-arguments
4378     ;;
4379 esac
4380
4381 case $ld_type in
4382     clang)
4383         check_ldflags -Qunused-arguments
4384     ;;
4385 esac
4386
4387 case $target_os in
4388     osf1)
4389         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4390     ;;
4391     plan9)
4392         add_cppflags -Dmain=plan9_main
4393     ;;
4394 esac
4395
4396 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4397
4398 check_deps $CONFIG_LIST       \
4399            $CONFIG_EXTRA      \