configure: Set the initial ldflags to match the cflags
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     flacdsp
1592     fmtconvert
1593     g722dsp
1594     gcrypt
1595     gmp
1596     golomb
1597     gplv3
1598     h263dsp
1599     h264chroma
1600     h264dsp
1601     h264pred
1602     h264qpel
1603     hpeldsp
1604     huffman
1605     huffyuvdsp
1606     huffyuvencdsp
1607     idctdsp
1608     iirfilter
1609     imdct15
1610     intrax8
1611     ividsp
1612     jpegtables
1613     libx262
1614     lgplv3
1615     lpc
1616     lzf
1617     me_cmp
1618     mpeg_er
1619     mpegaudio
1620     mpegaudiodsp
1621     mpegvideo
1622     mpegvideoenc
1623     mss34dsp
1624     pixblockdsp
1625     qpeldsp
1626     qsv
1627     qsvdec
1628     qsvenc
1629     rangecoder
1630     riffdec
1631     riffenc
1632     rtpdec
1633     rtpenc_chain
1634     rv34dsp
1635     sinewin
1636     snappy
1637     startcode
1638     texturedsp
1639     texturedspenc
1640     tpeldsp
1641     videodsp
1642     vp3dsp
1643     vp56dsp
1644     vp8dsp
1645     wma_freqs
1646     wmv2dsp
1647 "
1648
1649 CMDLINE_SELECT="
1650     $ARCH_EXT_LIST
1651     $CONFIG_LIST
1652     $HAVE_LIST_CMDLINE
1653     $THREADS_LIST
1654     asm
1655     cross_compile
1656     debug
1657     extra_warnings
1658     logging
1659     lto
1660     optimizations
1661     rpath
1662 "
1663
1664 PATHS_LIST="
1665     bindir
1666     datadir
1667     docdir
1668     incdir
1669     libdir
1670     mandir
1671     prefix
1672     shlibdir
1673 "
1674
1675 CMDLINE_SET="
1676     $PATHS_LIST
1677     ar
1678     arch
1679     as
1680     build_suffix
1681     cc
1682     cpu
1683     cross_prefix
1684     dep_cc
1685     env
1686     extra_version
1687     host_cc
1688     host_cflags
1689     host_ld
1690     host_ldflags
1691     host_libs
1692     host_os
1693     ld
1694     logfile
1695     malloc_prefix
1696     nm
1697     optflags
1698     pkg_config
1699     pkg_config_flags
1700     random_seed
1701     samples
1702     sysinclude
1703     sysroot
1704     target_exec
1705     target_os
1706     target_path
1707     target_samples
1708     toolchain
1709 "
1710
1711 CMDLINE_APPEND="
1712     extra_cflags
1713     host_cppflags
1714 "
1715
1716 # code dependency declarations
1717
1718 # architecture extensions
1719
1720 armv5te_deps="arm"
1721 armv6_deps="arm"
1722 armv6t2_deps="arm"
1723 armv8_deps="aarch64"
1724 neon_deps_any="aarch64 arm"
1725 intrinsics_neon_deps="neon"
1726 vfp_deps_any="aarch64 arm"
1727 vfpv3_deps="vfp"
1728
1729 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1730
1731 altivec_deps="ppc"
1732 ppc4xx_deps="ppc"
1733 vsx_deps="altivec"
1734 power8_deps="vsx"
1735
1736 cpunop_deps="i686"
1737 x86_64_select="i686"
1738 x86_64_suggest="fast_cmov"
1739
1740 amd3dnow_deps="mmx"
1741 amd3dnowext_deps="amd3dnow"
1742 i686_deps="x86"
1743 mmx_deps="x86"
1744 mmxext_deps="mmx"
1745 sse_deps="mmxext"
1746 sse2_deps="sse"
1747 sse3_deps="sse2"
1748 ssse3_deps="sse3"
1749 sse4_deps="ssse3"
1750 sse42_deps="sse4"
1751 avx_deps="sse42"
1752 xop_deps="avx"
1753 fma3_deps="avx"
1754 fma4_deps="avx"
1755 avx2_deps="avx"
1756
1757 mmx_external_deps="yasm"
1758 mmx_inline_deps="inline_asm"
1759 mmx_suggest="mmx_external mmx_inline"
1760
1761 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1762     eval dep=\$${ext}_deps
1763     eval ${ext}_external_deps='"${dep}_external"'
1764     eval ${ext}_inline_deps='"${dep}_inline"'
1765     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1766 done
1767
1768 aligned_stack_if_any="aarch64 ppc x86"
1769 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1770 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1771 fast_unaligned_if_any="aarch64 ppc x86"
1772 simd_align_16_if_any="altivec neon sse"
1773
1774 # system capabilities
1775 symver_if_any="symver_asm_label symver_gnu_asm"
1776 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1777
1778 # threading support
1779 atomics_gcc_if="sync_val_compare_and_swap"
1780 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1781 atomics_win32_if="MemoryBarrier"
1782 atomics_native_if_any="$ATOMICS_LIST"
1783 w32threads_deps="atomics_native"
1784 threads_if_any="$THREADS_LIST"
1785
1786 # subsystems
1787 dct_select="rdft"
1788 error_resilience_select="me_cmp"
1789 faandct_deps="faan fdctdsp"
1790 faanidct_deps="faan idctdsp"
1791 intrax8_select="error_resilience"
1792 mdct_select="fft"
1793 rdft_select="fft"
1794 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1795 mpeg_er_select="error_resilience"
1796 mpegaudio_select="mpegaudiodsp"
1797 mpegaudiodsp_select="dct"
1798 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1799 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1800 nvenc_deps_any="dlopen LoadLibrary"
1801 nvenc_extralibs='$ldl'
1802 qsvdec_select="qsv"
1803 qsvenc_select="qsv"
1804
1805 # decoders / encoders
1806 aac_decoder_select="imdct15 mdct sinewin"
1807 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1808 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1809 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1810 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1811 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1812 adpcm_g722_decoder_select="g722dsp"
1813 adpcm_g722_encoder_select="g722dsp"
1814 aic_decoder_select="golomb idctdsp"
1815 alac_encoder_select="lpc"
1816 als_decoder_select="bswapdsp"
1817 amrnb_decoder_select="lsp"
1818 amrwb_decoder_select="lsp"
1819 amv_decoder_select="sp5x_decoder"
1820 ape_decoder_select="bswapdsp"
1821 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1822 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1823 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1824 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1825 atrac1_decoder_select="mdct sinewin"
1826 atrac3_decoder_select="mdct"
1827 atrac3p_decoder_select="mdct sinewin"
1828 bink_decoder_select="blockdsp hpeldsp"
1829 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1830 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1831 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1832 cllc_decoder_select="bswapdsp"
1833 comfortnoise_encoder_select="lpc"
1834 cook_decoder_select="audiodsp mdct sinewin"
1835 cscd_decoder_select="lzo"
1836 cscd_decoder_suggest="zlib"
1837 dca_decoder_select="fmtconvert mdct"
1838 dds_decoder_select="texturedsp"
1839 dnxhd_decoder_select="blockdsp idctdsp"
1840 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1841 dvvideo_decoder_select="dvprofile idctdsp"
1842 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1843 dxa_decoder_deps="zlib"
1844 dxv_decoder_select="lzf texturedsp"
1845 eac3_decoder_select="ac3_decoder"
1846 eac3_encoder_select="ac3_encoder"
1847 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1848 eatgq_decoder_select="aandcttables idctdsp"
1849 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1850 exr_decoder_deps="zlib"
1851 ffv1_decoder_select="golomb rangecoder"
1852 ffv1_encoder_select="rangecoder"
1853 ffvhuff_decoder_select="huffyuv_decoder"
1854 ffvhuff_encoder_select="huffyuv_encoder"
1855 fic_decoder_select="golomb"
1856 flac_decoder_select="flacdsp golomb"
1857 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1858 flashsv_decoder_deps="zlib"
1859 flashsv_encoder_deps="zlib"
1860 flashsv2_decoder_deps="zlib"
1861 flv_decoder_select="h263_decoder"
1862 flv_encoder_select="h263_encoder"
1863 fourxm_decoder_select="blockdsp bswapdsp"
1864 fraps_decoder_select="bswapdsp huffman"
1865 g2m_decoder_deps="zlib"
1866 g2m_decoder_select="blockdsp idctdsp jpegtables"
1867 h261_decoder_select="mpeg_er mpegvideo"
1868 h261_encoder_select="aandcttables mpegvideoenc"
1869 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1870 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1871 h263i_decoder_select="h263_decoder"
1872 h263p_encoder_select="h263_encoder"
1873 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1874 h264_decoder_suggest="error_resilience"
1875 h264_nvenc_encoder_deps="nvenc"
1876 h264_qsv_decoder_deps="libmfx"
1877 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1878 h264_qsv_encoder_deps="libmfx"
1879 h264_qsv_encoder_select="qsvenc"
1880 hap_decoder_select="snappy texturedsp"
1881 hap_encoder_deps="libsnappy"
1882 hap_encoder_select="texturedspenc"
1883 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1884 hevc_nvenc_encoder_deps="nvenc"
1885 hevc_qsv_encoder_deps="libmfx"
1886 hevc_qsv_decoder_deps="libmfx"
1887 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1888 hevc_qsv_encoder_select="qsvenc"
1889 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1890 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1891 iac_decoder_select="imc_decoder"
1892 imc_decoder_select="bswapdsp fft mdct sinewin"
1893 indeo3_decoder_select="hpeldsp"
1894 indeo4_decoder_select="ividsp"
1895 indeo5_decoder_select="ividsp"
1896 interplay_video_decoder_select="hpeldsp"
1897 jpegls_decoder_select="golomb mjpeg_decoder"
1898 jpegls_encoder_select="golomb"
1899 jv_decoder_select="blockdsp"
1900 lagarith_decoder_select="huffyuvdsp"
1901 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1902 loco_decoder_select="golomb"
1903 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1904 metasound_decoder_select="lsp mdct sinewin"
1905 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1906 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1907 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1908 mjpegb_decoder_select="mjpeg_decoder"
1909 mlp_decoder_select="mlp_parser"
1910 motionpixels_decoder_select="bswapdsp"
1911 mp1_decoder_select="mpegaudio"
1912 mp1float_decoder_select="mpegaudio"
1913 mp2_decoder_select="mpegaudio"
1914 mp2float_decoder_select="mpegaudio"
1915 mp3_decoder_select="mpegaudio"
1916 mp3adu_decoder_select="mpegaudio"
1917 mp3adufloat_decoder_select="mpegaudio"
1918 mp3float_decoder_select="mpegaudio"
1919 mp3on4_decoder_select="mpegaudio"
1920 mp3on4float_decoder_select="mpegaudio"
1921 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1922 mpc8_decoder_select="mpegaudiodsp"
1923 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1924 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1925 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1926 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1927 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1928 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1929 mpeg2_qsv_decoder_deps="libmfx"
1930 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1931 mpeg2_qsv_encoder_deps="libmfx"
1932 mpeg2_qsv_encoder_select="qsvenc"
1933 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1934 mpeg4_encoder_select="h263_encoder"
1935 msa1_decoder_select="mss34dsp"
1936 msmpeg4v1_decoder_select="h263_decoder"
1937 msmpeg4v2_decoder_select="h263_decoder"
1938 msmpeg4v2_encoder_select="h263_encoder"
1939 msmpeg4v3_decoder_select="h263_decoder"
1940 msmpeg4v3_encoder_select="h263_encoder"
1941 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1942 mts2_decoder_select="mss34dsp"
1943 mxpeg_decoder_select="mjpeg_decoder"
1944 nellymoser_decoder_select="mdct sinewin"
1945 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1946 nuv_decoder_select="idctdsp lzo"
1947 on2avc_decoder_select="mdct"
1948 opus_decoder_deps="avresample"
1949 opus_decoder_select="imdct15"
1950 png_decoder_deps="zlib"
1951 png_encoder_deps="zlib"
1952 png_encoder_select="huffyuvencdsp"
1953 prores_decoder_select="idctdsp"
1954 prores_encoder_select="fdctdsp"
1955 qcelp_decoder_select="lsp"
1956 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1957 ra_144_encoder_select="audio_frame_queue lpc"
1958 ralf_decoder_select="golomb"
1959 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1960 rv10_encoder_select="h263_encoder"
1961 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1962 rv20_encoder_select="h263_encoder"
1963 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1964 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1965 shorten_decoder_select="golomb"
1966 sipr_decoder_select="lsp"
1967 sp5x_decoder_select="mjpeg_decoder"
1968 svq1_decoder_select="hpeldsp"
1969 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1970 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1971 svq3_decoder_suggest="zlib"
1972 tak_decoder_select="audiodsp"
1973 tdsc_decoder_deps="zlib"
1974 tdsc_decoder_select="mjpeg_decoder"
1975 theora_decoder_select="vp3_decoder"
1976 thp_decoder_select="mjpeg_decoder"
1977 tiff_decoder_suggest="zlib"
1978 tiff_encoder_suggest="zlib"
1979 truehd_decoder_select="mlp_decoder"
1980 truemotion2_decoder_select="bswapdsp"
1981 truespeech_decoder_select="bswapdsp"
1982 tscc_decoder_deps="zlib"
1983 txd_decoder_select="texturedsp"
1984 twinvq_decoder_select="mdct lsp sinewin"
1985 utvideo_decoder_select="bswapdsp"
1986 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1987 vble_decoder_select="huffyuvdsp"
1988 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1989 vc1image_decoder_select="vc1_decoder"
1990 vorbis_decoder_select="mdct"
1991 vorbis_encoder_select="mdct"
1992 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1993 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1994 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1995 vp6a_decoder_select="vp6_decoder"
1996 vp6f_decoder_select="vp6_decoder"
1997 vp7_decoder_select="h264pred videodsp vp8dsp"
1998 vp8_decoder_select="h264pred videodsp vp8dsp"
1999 vp9_decoder_select="videodsp"
2000 webp_decoder_select="vp8_decoder"
2001 wmapro_decoder_select="mdct sinewin wma_freqs"
2002 wmav1_decoder_select="mdct sinewin wma_freqs"
2003 wmav1_encoder_select="mdct sinewin wma_freqs"
2004 wmav2_decoder_select="mdct sinewin wma_freqs"
2005 wmav2_encoder_select="mdct sinewin wma_freqs"
2006 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2007 wmv1_decoder_select="h263_decoder"
2008 wmv1_encoder_select="h263_encoder"
2009 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2010 wmv2_encoder_select="h263_encoder wmv2dsp"
2011 wmv3_decoder_select="vc1_decoder"
2012 wmv3image_decoder_select="wmv3_decoder"
2013 zerocodec_decoder_deps="zlib"
2014 zlib_decoder_deps="zlib"
2015 zlib_encoder_deps="zlib"
2016 zmbv_decoder_deps="zlib"
2017 zmbv_encoder_deps="zlib"
2018
2019 # hardware accelerators
2020 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2021 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2022 vaapi_deps="va_va_h"
2023 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2024 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2025 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2026
2027 h263_vaapi_hwaccel_deps="vaapi"
2028 h263_vaapi_hwaccel_select="h263_decoder"
2029 h263_vdpau_hwaccel_deps="vdpau"
2030 h263_vdpau_hwaccel_select="h263_decoder"
2031 h264_d3d11va_hwaccel_deps="d3d11va"
2032 h264_d3d11va_hwaccel_select="h264_decoder"
2033 h264_dxva2_hwaccel_deps="dxva2"
2034 h264_dxva2_hwaccel_select="h264_decoder"
2035 h264_mmal_decoder_deps="mmal"
2036 h264_mmal_hwaccel_deps="mmal"
2037 h264_mmal_decoder_select="h264_decoder"
2038 h264_mmal_encoder_deps="mmal"
2039 h264_qsv_hwaccel_deps="libmfx"
2040 h264_vaapi_hwaccel_deps="vaapi"
2041 h264_vaapi_hwaccel_select="h264_decoder"
2042 h264_vda_hwaccel_deps="vda"
2043 h264_vda_hwaccel_select="h264_decoder"
2044 h264_vda_old_hwaccel_deps="vda"
2045 h264_vda_old_hwaccel_select="h264_decoder"
2046 h264_vdpau_hwaccel_deps="vdpau"
2047 h264_vdpau_hwaccel_select="h264_decoder"
2048 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2049 hevc_d3d11va_hwaccel_select="hevc_decoder"
2050 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2051 hevc_dxva2_hwaccel_select="hevc_decoder"
2052 hevc_qsv_hwaccel_deps="libmfx"
2053 mpeg1_vdpau_hwaccel_deps="vdpau"
2054 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2055 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2056 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2057 mpeg2_dxva2_hwaccel_deps="dxva2"
2058 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2059 mpeg2_qsv_hwaccel_deps="libmfx"
2060 mpeg2_vaapi_hwaccel_deps="vaapi"
2061 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2062 mpeg2_vdpau_hwaccel_deps="vdpau"
2063 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2064 mpeg4_vaapi_hwaccel_deps="vaapi"
2065 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2066 mpeg4_vdpau_hwaccel_deps="vdpau"
2067 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2068 vc1_d3d11va_hwaccel_deps="d3d11va"
2069 vc1_d3d11va_hwaccel_select="vc1_decoder"
2070 vc1_dxva2_hwaccel_deps="dxva2"
2071 vc1_dxva2_hwaccel_select="vc1_decoder"
2072 vc1_vaapi_hwaccel_deps="vaapi"
2073 vc1_vaapi_hwaccel_select="vc1_decoder"
2074 vc1_vdpau_hwaccel_deps="vdpau"
2075 vc1_vdpau_hwaccel_select="vc1_decoder"
2076 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2077 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2078 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2079 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2080
2081 # parsers
2082 h264_parser_select="h264_decoder"
2083 hevc_parser_select="golomb"
2084 mpegvideo_parser_select="mpegvideo"
2085 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2086 vc1_parser_select="mpegvideo startcode vc1_decoder"
2087
2088 # bitstream_filters
2089 mjpeg2jpeg_bsf_select="jpegtables"
2090
2091 # external libraries
2092 libdcadec_decoder_deps="libdcadec"
2093 libfaac_encoder_deps="libfaac"
2094 libfaac_encoder_select="audio_frame_queue"
2095 libfdk_aac_decoder_deps="libfdk_aac"
2096 libfdk_aac_encoder_deps="libfdk_aac"
2097 libfdk_aac_encoder_select="audio_frame_queue"
2098 libgsm_decoder_deps="libgsm"
2099 libgsm_encoder_deps="libgsm"
2100 libgsm_ms_decoder_deps="libgsm"
2101 libgsm_ms_encoder_deps="libgsm"
2102 libilbc_decoder_deps="libilbc"
2103 libilbc_encoder_deps="libilbc"
2104 libmp3lame_encoder_deps="libmp3lame"
2105 libmp3lame_encoder_select="audio_frame_queue"
2106 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2107 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2108 libopencore_amrnb_encoder_select="audio_frame_queue"
2109 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2110 libopenh264_encoder_deps="libopenh264"
2111 libopenjpeg_decoder_deps="libopenjpeg"
2112 libopenjpeg_encoder_deps="libopenjpeg"
2113 libopus_decoder_deps="libopus"
2114 libopus_encoder_deps="libopus"
2115 libopus_encoder_select="audio_frame_queue"
2116 libschroedinger_decoder_deps="libschroedinger"
2117 libschroedinger_encoder_deps="libschroedinger"
2118 libspeex_decoder_deps="libspeex"
2119 libspeex_encoder_deps="libspeex"
2120 libspeex_encoder_select="audio_frame_queue"
2121 libtheora_encoder_deps="libtheora"
2122 libtwolame_encoder_deps="libtwolame"
2123 libvo_aacenc_encoder_deps="libvo_aacenc"
2124 libvo_aacenc_encoder_select="audio_frame_queue"
2125 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2126 libvorbis_encoder_deps="libvorbis"
2127 libvorbis_encoder_select="audio_frame_queue"
2128 libvpx_vp8_decoder_deps="libvpx"
2129 libvpx_vp8_encoder_deps="libvpx"
2130 libvpx_vp9_decoder_deps="libvpx"
2131 libvpx_vp9_encoder_deps="libvpx"
2132 libwavpack_encoder_deps="libwavpack"
2133 libwebp_encoder_deps="libwebp"
2134 libx262_encoder_deps="libx262"
2135 libx264_encoder_deps="libx264"
2136 libx265_encoder_deps="libx265"
2137 libxavs_encoder_deps="libxavs"
2138 libxvid_encoder_deps="libxvid"
2139
2140 # demuxers / muxers
2141 ac3_demuxer_select="ac3_parser"
2142 asf_demuxer_select="riffdec"
2143 asf_muxer_select="riffenc"
2144 asf_stream_muxer_select="asf_muxer"
2145 avi_demuxer_select="riffdec"
2146 avi_muxer_select="riffenc"
2147 avisynth_demuxer_deps="avisynth"
2148 avisynth_demuxer_select="riffdec"
2149 caf_demuxer_select="riffdec"
2150 dash_muxer_select="mp4_muxer"
2151 dirac_demuxer_select="dirac_parser"
2152 dv_demuxer_select="dvprofile"
2153 dv_muxer_select="dvprofile"
2154 dxa_demuxer_select="riffdec"
2155 eac3_demuxer_select="ac3_parser"
2156 f4v_muxer_select="mov_muxer"
2157 flac_demuxer_select="flac_parser"
2158 hds_muxer_select="flv_muxer"
2159 hls_muxer_select="mpegts_muxer"
2160 ipod_muxer_select="mov_muxer"
2161 ismv_muxer_select="mov_muxer"
2162 matroska_audio_muxer_select="matroska_muxer"
2163 matroska_demuxer_select="riffdec"
2164 matroska_demuxer_suggest="bzlib lzo zlib"
2165 matroska_muxer_select="riffenc"
2166 mmf_muxer_select="riffenc"
2167 mov_demuxer_select="riffdec"
2168 mov_demuxer_suggest="zlib"
2169 mov_muxer_select="riffenc rtpenc_chain"
2170 mp3_demuxer_select="mpegaudio_parser"
2171 mp4_muxer_select="mov_muxer"
2172 mpegts_muxer_select="adts_muxer latm_muxer"
2173 mpegtsraw_demuxer_select="mpegts_demuxer"
2174 mxf_d10_muxer_select="mxf_muxer"
2175 nut_muxer_select="riffenc"
2176 nuv_demuxer_select="riffdec"
2177 oga_muxer_select="ogg_muxer"
2178 ogg_demuxer_select="golomb"
2179 opus_muxer_select="ogg_muxer"
2180 psp_muxer_select="mov_muxer"
2181 rtp_demuxer_select="sdp_demuxer"
2182 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2183 rtsp_demuxer_select="http_protocol rtpdec"
2184 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2185 sap_demuxer_select="sdp_demuxer"
2186 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2187 sdp_demuxer_select="rtpdec"
2188 smoothstreaming_muxer_select="ismv_muxer"
2189 spdif_muxer_select="aac_parser"
2190 spx_muxer_select="ogg_muxer"
2191 tak_demuxer_select="tak_parser"
2192 tg2_muxer_select="mov_muxer"
2193 tgp_muxer_select="mov_muxer"
2194 w64_demuxer_select="wav_demuxer"
2195 wav_demuxer_select="riffdec"
2196 wav_muxer_select="riffenc"
2197 webm_muxer_select="riffenc"
2198 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2199 wtv_demuxer_select="riffdec"
2200 xmv_demuxer_select="riffdec"
2201 xwma_demuxer_select="riffdec"
2202
2203 # indevs / outdevs
2204 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2205 alsa_outdev_deps="alsa_asoundlib_h"
2206 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2207 dv1394_indev_deps="dv1394"
2208 dv1394_indev_select="dv_demuxer"
2209 fbdev_indev_deps="linux_fb_h"
2210 jack_indev_deps="jack_jack_h pthreads"
2211 libcdio_indev_deps="libcdio"
2212 libdc1394_indev_deps="libdc1394"
2213 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2214 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2215 pulse_indev_deps="libpulse"
2216 sndio_indev_deps="sndio_h"
2217 sndio_outdev_deps="sndio_h"
2218 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2219 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2220 vfwcap_indev_extralibs="-lavicap32"
2221 x11grab_indev_deps="x11grab"
2222 x11grab_xcb_indev_deps="libxcb"
2223
2224 # protocols
2225 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2226 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2227 ffrtmpcrypt_protocol_select="tcp_protocol"
2228 ffrtmphttp_protocol_deps="!librtmp_protocol"
2229 ffrtmphttp_protocol_select="http_protocol"
2230 gopher_protocol_select="network"
2231 http_protocol_select="tcp_protocol"
2232 httpproxy_protocol_select="tcp_protocol"
2233 https_protocol_select="tls_protocol"
2234 icecast_protocol_select="http_protocol"
2235 librtmp_protocol_deps="librtmp"
2236 librtmpe_protocol_deps="librtmp"
2237 librtmps_protocol_deps="librtmp"
2238 librtmpt_protocol_deps="librtmp"
2239 librtmpte_protocol_deps="librtmp"
2240 mmsh_protocol_select="http_protocol"
2241 mmst_protocol_select="network"
2242 rtmp_protocol_deps="!librtmp_protocol"
2243 rtmp_protocol_select="tcp_protocol"
2244 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2245 rtmps_protocol_deps="!librtmp_protocol"
2246 rtmps_protocol_select="tls_protocol"
2247 rtmpt_protocol_select="ffrtmphttp_protocol"
2248 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2249 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2250 rtp_protocol_select="udp_protocol"
2251 sctp_protocol_deps="struct_sctp_event_subscribe"
2252 sctp_protocol_select="network"
2253 srtp_protocol_select="rtp_protocol"
2254 tcp_protocol_select="network"
2255 tls_gnutls_protocol_deps="gnutls"
2256 tls_gnutls_protocol_select="tcp_protocol"
2257 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2258 tls_openssl_protocol_select="tcp_protocol"
2259 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2260 udp_protocol_select="network"
2261 unix_protocol_deps="sys_un_h"
2262 unix_protocol_select="network"
2263
2264 # filters
2265 blackframe_filter_deps="gpl"
2266 boxblur_filter_deps="gpl"
2267 bs2b_filter_deps="libbs2b"
2268 cropdetect_filter_deps="gpl"
2269 delogo_filter_deps="gpl"
2270 drawtext_filter_deps="libfreetype"
2271 frei0r_filter_deps="frei0r dlopen"
2272 frei0r_filter_extralibs='$ldl'
2273 frei0r_src_filter_deps="frei0r dlopen"
2274 frei0r_src_filter_extralibs='$ldl'
2275 hqdn3d_filter_deps="gpl"
2276 interlace_filter_deps="gpl"
2277 ocv_filter_deps="libopencv"
2278 resample_filter_deps="avresample"
2279 scale_filter_deps="swscale"
2280
2281 # examples
2282 avcodec_example_deps="avcodec avutil"
2283 filter_audio_example_deps="avfilter avutil"
2284 metadata_example_deps="avformat avutil"
2285 output_example_deps="avcodec avformat avutil swscale"
2286 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2287 transcode_aac_example_deps="avcodec avformat avresample"
2288
2289 # libraries, in linking order
2290 avcodec_deps="avutil"
2291 avdevice_deps="avformat avcodec avutil"
2292 avfilter_deps="avutil"
2293 avformat_deps="avcodec avutil"
2294 avresample_deps="avutil"
2295 swscale_deps="avutil"
2296
2297 # programs
2298 avconv_deps="avcodec avfilter avformat avresample swscale"
2299 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2300                fps_filter null_filter resample_filter scale_filter
2301                setpts_filter trim_filter"
2302 avplay_deps="avcodec avformat avresample swscale sdl"
2303 avplay_libs='$sdl_libs'
2304 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2305 avprobe_deps="avcodec avformat"
2306
2307 # documentation
2308 pod2man_deps="doc"
2309 texi2html_deps="doc"
2310
2311 # default parameters
2312
2313 logfile="config.log"
2314
2315 # installation paths
2316 prefix_default="/usr/local"
2317 bindir_default='${prefix}/bin'
2318 datadir_default='${prefix}/share/avconv'
2319 docdir_default='${prefix}/share/doc/libav'
2320 incdir_default='${prefix}/include'
2321 libdir_default='${prefix}/lib'
2322 mandir_default='${prefix}/share/man'
2323 shlibdir_default="$libdir_default"
2324
2325 # toolchain
2326 ar_default="ar"
2327 cc_default="gcc"
2328 host_cc_default="gcc"
2329 cp_f="cp -f"
2330 ln_s="ln -s -f"
2331 nm_default="nm -g"
2332 objformat="elf"
2333 pkg_config_default=pkg-config
2334 ranlib="ranlib"
2335 strip="strip"
2336 yasmexe="yasm"
2337
2338 # machine
2339 arch_default=$(uname -m)
2340 cpu="generic"
2341 intrinsics="none"
2342
2343 # OS
2344 target_os_default=$(tolower $(uname -s))
2345 host_os=$target_os_default
2346
2347 # configurable options
2348 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2349
2350 enable asm
2351 enable debug
2352 enable doc
2353 enable faan faandct faanidct
2354 enable optimizations
2355 enable safe_bitstream_reader
2356 enable static
2357 enable swscale_alpha
2358 enable valgrind_backtrace
2359
2360 # By default, enable only those hwaccels that have no external dependencies.
2361 enable d3d11va dxva2 vda vdpau
2362
2363 # build settings
2364 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2365 LIBPREF="lib"
2366 LIBSUF=".a"
2367 FULLNAME='$(NAME)$(BUILDSUF)'
2368 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2369 SLIBPREF="lib"
2370 SLIBSUF=".so"
2371 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2372 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2373 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2374 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2375 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2376 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2377
2378 asflags_filter=echo
2379 cflags_filter=echo
2380 ldflags_filter=echo
2381
2382 AS_C='-c'
2383 AS_O='-o $@'
2384 CC_C='-c'
2385 CC_E='-E -o $@'
2386 CC_O='-o $@'
2387 LD_O='-o $@'
2388 LD_LIB='-l%'
2389 LD_PATH='-L'
2390 HOSTCC_C='-c'
2391 HOSTCC_E='-E -o $@'
2392 HOSTCC_O='-o $@'
2393 HOSTLD_O='-o $@'
2394
2395 host_libs='-lm'
2396 host_cflags_filter=echo
2397 host_ldflags_filter=echo
2398
2399 target_path='$(CURDIR)'
2400
2401 # since the object filename is not given with the -MM flag, the compiler
2402 # is only able to print the basename, and we must add the path ourselves
2403 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2404 DEPFLAGS='-MM'
2405
2406 # find source path
2407 if test -f configure; then
2408     source_path=.
2409 else
2410     source_path=$(cd $(dirname "$0"); pwd)
2411     echo "$source_path" | grep -q '[[:blank:]]' &&
2412         die "Out of tree builds are impossible with whitespace in source path."
2413     test -e "$source_path/config.h" &&
2414         die "Out of tree builds are impossible with config.h in source dir."
2415 fi
2416
2417 for v in "$@"; do
2418     r=${v#*=}
2419     l=${v%"$r"}
2420     r=$(sh_quote "$r")
2421     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2422 done
2423
2424 find_things(){
2425     thing=$1
2426     pattern=$2
2427     file=$source_path/$3
2428     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2429 }
2430
2431 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2432 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2433 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2434 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2435 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2436 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2437 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2438 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2439 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2440 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2441 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2442
2443 ALL_COMPONENTS="
2444     $BSF_LIST
2445     $DECODER_LIST
2446     $DEMUXER_LIST
2447     $ENCODER_LIST
2448     $FILTER_LIST
2449     $HWACCEL_LIST
2450     $INDEV_LIST
2451     $MUXER_LIST
2452     $OUTDEV_LIST
2453     $PARSER_LIST
2454     $PROTOCOL_LIST
2455 "
2456
2457 for n in $COMPONENT_LIST; do
2458     v=$(toupper ${n%s})_LIST
2459     eval enable \$$v
2460     eval ${n}_if_any="\$$v"
2461 done
2462
2463 enable $ARCH_EXT_LIST
2464
2465 die_unknown(){
2466     echo "Unknown option \"$1\"."
2467     echo "See $0 --help for available options."
2468     exit 1
2469 }
2470
2471 print_3_columns() {
2472     cat | tr ' ' '\n' | sort | pr -r -3 -t
2473 }
2474
2475 show_list() {
2476     suffix=_$1
2477     shift
2478     echo $* | sed s/$suffix//g | print_3_columns
2479     exit 0
2480 }
2481
2482 rand_list(){
2483     IFS=', '
2484     set -- $*
2485     unset IFS
2486     for thing; do
2487         comp=${thing%:*}
2488         prob=${thing#$comp}
2489         prob=${prob#:}
2490         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2491         echo "prob ${prob:-0.5}"
2492         printf '%s\n' $comp
2493     done
2494 }
2495
2496 do_random(){
2497     action=$1
2498     shift
2499     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2500     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2501 }
2502
2503 for opt do
2504     optval="${opt#*=}"
2505     case "$opt" in
2506         --extra-ldflags=*)
2507             add_ldflags $optval
2508         ;;
2509         --extra-ldexeflags=*)
2510             add_ldexeflags $optval
2511         ;;
2512         --extra-libs=*)
2513             add_extralibs $optval
2514         ;;
2515         --disable-devices)
2516             disable $INDEV_LIST $OUTDEV_LIST
2517         ;;
2518         --enable-debug=*)
2519             debuglevel="$optval"
2520         ;;
2521         --disable-programs)
2522             disable $PROGRAM_LIST
2523         ;;
2524         --disable-everything)
2525             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2526         ;;
2527         --disable-all)
2528             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2529             disable $LIBRARY_LIST $PROGRAM_LIST doc
2530         ;;
2531         --enable-random|--disable-random)
2532             action=${opt%%-random}
2533             do_random ${action#--} $COMPONENT_LIST
2534         ;;
2535         --enable-random=*|--disable-random=*)
2536             action=${opt%%-random=*}
2537             do_random ${action#--} $optval
2538         ;;
2539         --enable-*=*|--disable-*=*)
2540             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2541             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2542             eval list=\$$(toupper $thing)_LIST
2543             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2544             $action $(filter "$name" $list)
2545         ;;
2546         --enable-avserver|--disable-avserver*)
2547             warn "avserver has been removed, the ${opt} option is only"\
2548                  "provided for compatibility and will be removed in the future"
2549         ;;
2550         --enable-?*|--disable-?*)
2551             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2552             if is_in $option $COMPONENT_LIST; then
2553                 test $action = disable && action=unset
2554                 eval $action \$$(toupper ${option%s})_LIST
2555             elif is_in $option $CMDLINE_SELECT; then
2556                 $action $option
2557             else
2558                 die_unknown $opt
2559             fi
2560         ;;
2561         --list-*)
2562             NAME="${opt#--list-}"
2563             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2564             NAME=${NAME%s}
2565             eval show_list $NAME \$$(toupper $NAME)_LIST
2566         ;;
2567         --help|-h) show_help
2568         ;;
2569         *)
2570             optname="${opt%%=*}"
2571             optname="${optname#--}"
2572             optname=$(echo "$optname" | sed 's/-/_/g')
2573             if is_in $optname $CMDLINE_SET; then
2574                 eval $optname='$optval'
2575             elif is_in $optname $CMDLINE_APPEND; then
2576                 append $optname "$optval"
2577             else
2578                 die_unknown $opt
2579             fi
2580         ;;
2581     esac
2582 done
2583
2584 for e in $env; do
2585     eval "export $e"
2586 done
2587
2588 disabled logging && logfile=/dev/null
2589
2590 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2591 set >> $logfile
2592
2593 case "$toolchain" in
2594     clang-asan)
2595         cc_default="clang"
2596         add_cflags  -fsanitize=address
2597         add_ldflags -fsanitize=address
2598     ;;
2599     clang-tsan)
2600         cc_default="clang"
2601         add_cflags  -fsanitize=thread -pie
2602         add_ldflags -fsanitize=thread -pie
2603     ;;
2604     clang-usan)
2605         cc_default="clang"
2606         add_cflags  -fsanitize=undefined -O1
2607         add_ldflags -fsanitize=undefined
2608     ;;
2609     gcc-asan)
2610         cc_default="gcc"
2611         add_cflags  -fsanitize=address
2612         add_ldflags -fsanitize=address
2613     ;;
2614     gcc-tsan)
2615         cc_default="gcc"
2616         add_cflags  -fsanitize=thread -pie -fPIC
2617         add_ldflags -fsanitize=thread -pie -fPIC
2618     ;;
2619     gcc-usan)
2620         cc_default="gcc"
2621         add_cflags  -fsanitize=undefined
2622         add_ldflags -fsanitize=undefined
2623     ;;
2624     valgrind-massif)
2625         target_exec_default="valgrind"
2626         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2627     ;;
2628     valgrind-memcheck)
2629         target_exec_default="valgrind"
2630         target_exec_args="--track-origins=yes --leak-check=full"
2631     ;;
2632     msvc)
2633         # Check whether the current MSVC version needs the C99 converter.
2634         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2635         # support enough of C99 to build libav. Default to the new
2636         # behaviour if the regexp was unable to match anything, since this
2637         # successfully parses the version number of existing supported
2638         # versions that require the converter (MSVC 2010 and 2012).
2639         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2640         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2641             cc_default="cl"
2642         else
2643             cc_default="c99wrap cl"
2644         fi
2645         ld_default="$source_path/compat/windows/mslink"
2646         nm_default="dumpbin -symbols"
2647         ar_default="lib"
2648         case "$arch" in
2649         arm*)
2650             as_default="armasm"
2651             ;;
2652         esac
2653         target_os_default="win32"
2654         # Use a relative path for TMPDIR. This makes sure all the
2655         # ffconf temp files are written with a relative path, avoiding
2656         # issues with msys/win32 path conversion for MSVC parameters
2657         # such as -Fo<file> or -out:<file>.
2658         TMPDIR=.
2659     ;;
2660     icl)
2661         cc_default="icl"
2662         ld_default="xilink"
2663         nm_default="dumpbin -symbols"
2664         ar_default="xilib"
2665         target_os_default="win32"
2666         TMPDIR=.
2667     ;;
2668     gcov)
2669         add_cflags  -fprofile-arcs -ftest-coverage
2670         add_ldflags -fprofile-arcs -ftest-coverage
2671     ;;
2672     hardened)
2673         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2674         add_cflags   -fno-strict-overflow -fstack-protector-all
2675         add_ldflags  -Wl,-z,relro -Wl,-z,now
2676     ;;
2677     ?*)
2678         die "Unknown toolchain $toolchain"
2679     ;;
2680 esac
2681
2682 test -n "$cross_prefix" && enable cross_compile
2683
2684 if enabled cross_compile; then
2685     test -n "$arch" && test -n "$target_os" ||
2686         die "Must specify target arch and OS when cross-compiling"
2687 fi
2688
2689 ar_default="${cross_prefix}${ar_default}"
2690 cc_default="${cross_prefix}${cc_default}"
2691 nm_default="${cross_prefix}${nm_default}"
2692 pkg_config_default="${cross_prefix}${pkg_config_default}"
2693 ranlib="${cross_prefix}${ranlib}"
2694 strip="${cross_prefix}${strip}"
2695
2696 sysinclude_default="${sysroot}/usr/include"
2697
2698 set_default arch cc pkg_config sysinclude target_exec target_os
2699 enabled cross_compile || host_cc_default=$cc
2700 set_default host_cc
2701
2702 if ! $pkg_config --version >/dev/null 2>&1; then
2703     warn "$pkg_config not found, library detection may fail."
2704     pkg_config=false
2705 fi
2706
2707 exesuf() {
2708     case $1 in
2709         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2710     esac
2711 }
2712
2713 EXESUF=$(exesuf $target_os)
2714 HOSTEXESUF=$(exesuf $host_os)
2715
2716 # set temporary file name
2717 : ${TMPDIR:=$TEMPDIR}
2718 : ${TMPDIR:=$TMP}
2719 : ${TMPDIR:=/tmp}
2720
2721 if ! check_cmd mktemp -u XXXXXX; then
2722     # simple replacement for missing mktemp
2723     # NOT SAFE FOR GENERAL USE
2724     mktemp(){
2725         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2726     }
2727 fi
2728
2729 tmpfile(){
2730     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2731         (set -C; exec > $tmp) 2>/dev/null ||
2732         die "Unable to create temporary file in $TMPDIR."
2733     append TMPFILES $tmp
2734     eval $1=$tmp
2735 }
2736
2737 trap 'rm -f -- $TMPFILES' EXIT
2738
2739 tmpfile TMPASM .asm
2740 tmpfile TMPC   .c
2741 tmpfile TMPE   $EXESUF
2742 tmpfile TMPH   .h
2743 tmpfile TMPO   .o
2744 tmpfile TMPS   .S
2745 tmpfile TMPSH  .sh
2746 tmpfile TMPV   .ver
2747
2748 unset -f mktemp
2749
2750 chmod +x $TMPE
2751
2752 # make sure we can execute files in $TMPDIR
2753 cat > $TMPSH 2>> $logfile <<EOF
2754 #! /bin/sh
2755 EOF
2756 chmod +x $TMPSH >> $logfile 2>&1
2757 if ! $TMPSH >> $logfile 2>&1; then
2758     cat <<EOF
2759 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2760 variable to another directory and make sure that it is not mounted noexec.
2761 EOF
2762     die "Sanity test failed."
2763 fi
2764
2765 armasm_flags(){
2766     for flag; do
2767         case $flag in
2768             # Filter out MSVC cl.exe options from cflags that shouldn't
2769             # be passed to gas-preprocessor
2770             -M[TD]*)                                            ;;
2771             *)                  echo $flag                      ;;
2772         esac
2773    done
2774 }
2775
2776 ccc_flags(){
2777     for flag; do
2778         case $flag in
2779             -std=c99)           echo -c99                       ;;
2780             -mcpu=*)            echo -arch ${flag#*=}           ;;
2781             -mieee)             echo -ieee                      ;;
2782             -O*|-fast)          echo $flag                      ;;
2783             -fno-math-errno)    echo -assume nomath_errno       ;;
2784             -g)                 echo -g3                        ;;
2785             -Wall)              echo -msg_enable level2         ;;
2786             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2787             -Wl,*)              echo $flag                      ;;
2788             -f*|-W*)                                            ;;
2789             *)                  echo $flag                      ;;
2790         esac
2791    done
2792 }
2793
2794 cparser_flags(){
2795     for flag; do
2796         case $flag in
2797             -Wno-switch)             echo -Wno-switch-enum ;;
2798             -Wno-format-zero-length) ;;
2799             -Wdisabled-optimization) ;;
2800             -Wno-pointer-sign)       echo -Wno-other ;;
2801             *)                       echo $flag ;;
2802         esac
2803     done
2804 }
2805
2806 msvc_common_flags(){
2807     for flag; do
2808         case $flag in
2809             # In addition to specifying certain flags under the compiler
2810             # specific filters, they must be specified here as well or else the
2811             # generic catch all at the bottom will print the original flag.
2812             -Wall)                ;;
2813             -std=c99)             ;;
2814             # Common flags
2815             -fomit-frame-pointer) ;;
2816             -g)                   echo -Z7 ;;
2817             -fno-math-errno)      ;;
2818             -fno-common)          ;;
2819             -fno-signed-zeros)    ;;
2820             -fPIC)                ;;
2821             -mthumb)              ;;
2822             -march=*)             ;;
2823             -lz)                  echo zlib.lib ;;
2824             -lavifil32)           echo vfw32.lib ;;
2825             -lavicap32)           echo vfw32.lib user32.lib ;;
2826             -l*)                  echo ${flag#-l}.lib ;;
2827             -L*)                  echo -libpath:${flag#-L} ;;
2828             *)                    echo $flag ;;
2829         esac
2830     done
2831 }
2832
2833 msvc_flags(){
2834     msvc_common_flags "$@"
2835     for flag; do
2836         case $flag in
2837             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2838                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2839                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2840                                        -wd4273 -wd4554 -wd4701 ;;
2841         esac
2842     done
2843 }
2844
2845 icl_flags(){
2846     msvc_common_flags "$@"
2847     for flag; do
2848         case $flag in
2849             # Despite what Intel's documentation says -Wall, which is supported
2850             # on Windows, does enable remarks so disable them here.
2851             -Wall)                echo $flag -Qdiag-disable:remark ;;
2852             -std=c99)             echo -Qstd=c99 ;;
2853         esac
2854     done
2855 }
2856
2857 pgi_flags(){
2858     for flag; do
2859         case $flag in
2860             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2861             -fomit-frame-pointer) echo -Mnoframe ;;
2862             -g)                   echo -gopt ;;
2863             *)                    echo $flag ;;
2864         esac
2865     done
2866 }
2867
2868 suncc_flags(){
2869     for flag; do
2870         case $flag in
2871             -march=*|-mcpu=*)
2872                 case "${flag#*=}" in
2873                     native)                   echo -xtarget=native       ;;
2874                     v9|niagara)               echo -xarch=sparc          ;;
2875                     ultrasparc)               echo -xarch=sparcvis       ;;
2876                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2877                     i586|pentium)             echo -xchip=pentium        ;;
2878                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2879                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2880                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2881                     pentium4*)          echo -xtarget=pentium4           ;;
2882                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2883                     *-sse3)             echo -xarch=sse3                 ;;
2884                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2885                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2886                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2887                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2888                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2889                     k8|opteron|athlon64|athlon-fx)
2890                                                echo -xarch=sse2a         ;;
2891                     athlon*)                   echo -xarch=pentium_proa  ;;
2892                 esac
2893                 ;;
2894             -std=c99)             echo -xc99              ;;
2895             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2896             -fPIC)                echo -KPIC -xcode=pic32 ;;
2897             -W*,*)                echo $flag              ;;
2898             -f*-*|-W*|-mimpure-text)                      ;;
2899             -shared)              echo -G                 ;;
2900             *)                    echo $flag              ;;
2901         esac
2902     done
2903 }
2904
2905 tms470_flags(){
2906     for flag; do
2907         case $flag in
2908             -march=*|-mcpu=*)
2909                 case "${flag#*=}" in
2910                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2911                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2912                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2913                     armv6*|arm11*)          echo -mv=6   ;;
2914                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2915                                             echo -mv=5e  ;;
2916                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2917                 esac
2918                 ;;
2919             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2920             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2921             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2922             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2923             -msoft-float)   echo --float_support=vfplib       ;;
2924             -O[0-3]|-mf=*)  echo $flag                        ;;
2925             -g)             echo -g -mn                       ;;
2926             -pds=*)         echo $flag                        ;;
2927             -D*|-I*)        echo $flag                        ;;
2928             --gcc|--abi=*)  echo $flag                        ;;
2929             -me)            echo $flag                        ;;
2930         esac
2931     done
2932 }
2933
2934 probe_cc(){
2935     pfx=$1
2936     _cc=$2
2937
2938     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2939     unset _ld_o _ldflags _ld_lib _ld_path
2940     unset _depflags _DEPCMD _DEPFLAGS
2941     _flags_filter=echo
2942
2943     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2944         _type=llvm_gcc
2945         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
2946         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
2947         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2948         _cflags_speed='-O3'
2949         _cflags_size='-Os'
2950     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2951         _type=gcc
2952         gcc_version=$($_cc --version | head -n1)
2953         gcc_basever=$($_cc -dumpversion)
2954         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2955         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2956         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2957         if ! $_cc -dumpversion | grep -q '^2\.'; then
2958             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2959         fi
2960         _cflags_speed='-O3'
2961         _cflags_size='-Os'
2962     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2963         _type=icc
2964         _ident=$($_cc --version | head -n1)
2965         _depflags='-MMD'
2966         _cflags_speed='-O3'
2967         _cflags_size='-Os'
2968         _cflags_noopt='-O1'
2969     elif $_cc -v 2>&1 | grep -q xlc; then
2970         _type=xlc
2971         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2972         _cflags_speed='-O5'
2973         _cflags_size='-O5 -qcompact'
2974     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2975         _type=ccc
2976         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2977         _DEPFLAGS='-M'
2978         _cflags_speed='-fast'
2979         _cflags_size='-O1'
2980         _flags_filter=ccc_flags
2981     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2982         test -d "$sysroot" || die "No valid sysroot specified."
2983         _type=armcc
2984         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2985         armcc_conf="$PWD/armcc.conf"
2986         $_cc --arm_linux_configure                 \
2987              --arm_linux_config_file="$armcc_conf" \
2988              --configure_sysroot="$sysroot"        \
2989              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2990              die "Error creating armcc configuration file."
2991         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2992         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2993         as_default="${cross_prefix}gcc"
2994         _depflags='-MMD'
2995         _cflags_speed='-O3'
2996         _cflags_size='-Os'
2997     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2998         _type=tms470
2999         _ident=$($_cc -version | head -n1 | tr -s ' ')
3000         _flags='--gcc --abi=eabi -me'
3001         _cc_e='-ppl -fe=$@'
3002         _cc_o='-fe=$@'
3003         _depflags='-ppa -ppd=$(@:.o=.d)'
3004         _cflags_speed='-O3 -mf=5'
3005         _cflags_size='-O3 -mf=2'
3006         _flags_filter=tms470_flags
3007     elif $_cc -v 2>&1 | grep -q clang; then
3008         _type=clang
3009         _ident=$($_cc --version 2>/dev/null | head -n1)
3010         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3011         _cflags_speed='-O3'
3012         _cflags_size='-Os'
3013     elif $_cc -V 2>&1 | grep -q Sun; then
3014         _type=suncc
3015         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3016         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3017         _DEPFLAGS='-xM1 -xc99'
3018         _ldflags='-std=c99'
3019         _cflags_speed='-O5'
3020         _cflags_size='-O5 -xspace'
3021         _flags_filter=suncc_flags
3022     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3023         _type=pathscale
3024         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3025         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3026         _cflags_speed='-O2'
3027         _cflags_size='-Os'
3028         _flags_filter='filter_out -Wdisabled-optimization'
3029     elif $_cc -v 2>&1 | grep -q Open64; then
3030         _type=open64
3031         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3032         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3033         _cflags_speed='-O2'
3034         _cflags_size='-Os'
3035         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3036     elif $_cc -V 2>&1 | grep -q Portland; then
3037         _type=pgi
3038         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3039         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3040         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3041         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3042         _cflags_noopt="-O1"
3043         _flags_filter=pgi_flags
3044     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3045         _type=armasm
3046         _ident=$($_cc | head -n1)
3047         # 4509: "This form of conditional instruction is deprecated"
3048         _flags="-nologo -ignore 4509"
3049         _flags_filter=armasm_flags
3050     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3051         _type=msvc
3052         _ident=$($_cc 2>&1 | head -n1)
3053         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3054         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3055         _cflags_speed="-O2"
3056         _cflags_size="-O1"
3057         if $_cc -nologo- 2>&1 | grep -q Linker; then
3058             _ld_o='-out:$@'
3059         else
3060             _ld_o='-Fe$@'
3061         fi
3062         _cc_o='-Fo$@'
3063         _cc_e='-P -Fi$@'
3064         _flags_filter=msvc_flags
3065         _ld_lib='lib%.a'
3066         _ld_path='-libpath:'
3067         _flags='-nologo'
3068         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3069     elif $_cc 2>&1 | grep -q Intel; then
3070         _type=icl
3071         _ident=$($_cc 2>&1 | head -n1)
3072         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3073         # Not only is O3 broken on 13.x+ but it is slower on all previous
3074         # versions (tested) as well.
3075         _cflags_speed="-O2"
3076         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3077         if $_cc 2>&1 | grep -q Linker; then
3078             _ld_o='-out:$@'
3079         else
3080             _ld_o='-Fe$@'
3081         fi
3082         _cc_o='-Fo$@'
3083         _cc_e='-P'
3084         _flags_filter=icl_flags
3085         _ld_lib='lib%.a'
3086         _ld_path='-libpath:'
3087         # -Qdiag-error to make icl error when seeing certain unknown arguments
3088         _flags='-nologo -Qdiag-error:4044,10157'
3089         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3090         # with MSVC which enables it by default.
3091         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3092     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3093         _type=cparser
3094         _ident=$($_cc --version | head -n1)
3095         _depflags='-MMD'
3096         _cflags_speed='-O4'
3097         _cflags_size='-O2'
3098         _flags_filter=cparser_flags
3099     fi
3100
3101     eval ${pfx}_type=\$_type
3102     eval ${pfx}_ident=\$_ident
3103 }
3104
3105 set_ccvars(){
3106     eval ${1}_C=\${_cc_c-\${${1}_C}}
3107     eval ${1}_E=\${_cc_e-\${${1}_E}}
3108     eval ${1}_O=\${_cc_o-\${${1}_O}}
3109
3110     if [ -n "$_depflags" ]; then
3111         eval ${1}_DEPFLAGS=\$_depflags
3112     else
3113         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3114         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3115         eval DEP${1}FLAGS=\$_flags
3116     fi
3117 }
3118
3119 probe_cc cc "$cc"
3120 cflags_filter=$_flags_filter
3121 cflags_speed=$_cflags_speed
3122 cflags_size=$_cflags_size
3123 cflags_noopt=$_cflags_noopt
3124 add_cflags $_flags $_cflags
3125 cc_ldflags=$_ldflags
3126 set_ccvars CC
3127
3128 probe_cc hostcc "$host_cc"
3129 host_cflags_filter=$_flags_filter
3130 add_host_cflags  $_flags $_cflags
3131 set_ccvars HOSTCC
3132
3133 test -n "$cc_type" && enable $cc_type ||
3134     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3135
3136 : ${as_default:=$cc}
3137 : ${dep_cc_default:=$cc}
3138 : ${ld_default:=$cc}
3139 : ${host_ld_default:=$host_cc}
3140 set_default ar as dep_cc ld host_ld
3141
3142 probe_cc as "$as"
3143 asflags_filter=$_flags_filter
3144 add_asflags $_flags $_cflags
3145 set_ccvars AS
3146
3147 probe_cc ld "$ld"
3148 ldflags_filter=$_flags_filter
3149 add_ldflags $_flags $_ldflags
3150 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3151 LD_O=${_ld_o-$LD_O}
3152 LD_LIB=${_ld_lib-$LD_LIB}
3153 LD_PATH=${_ld_path-$LD_PATH}
3154
3155 probe_cc hostld "$host_ld"
3156 host_ldflags_filter=$_flags_filter
3157 add_host_ldflags $_flags $_ldflags
3158 HOSTLD_O=${_ld_o-$HOSTLD_O}
3159
3160 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3161     probe_cc depcc "$dep_cc"
3162     CCDEP=${_DEPCMD:-$DEPCMD}
3163     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3164     DEPCCFLAGS=$_flags
3165 fi
3166
3167 if $ar 2>&1 | grep -q Microsoft; then
3168     arflags="-nologo"
3169     ar_o='-out:$@'
3170 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3171     arflags="rq"
3172     ar_o='$@'
3173 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3174     arflags='-Xany -r -c'
3175     ar_o='$@'
3176 else
3177     arflags="rc"
3178     ar_o='$@'
3179 fi
3180
3181 add_cflags $extra_cflags
3182 add_asflags $extra_cflags
3183
3184 if test -n "$sysroot"; then
3185     case "$cc_type" in
3186         gcc|llvm_gcc|clang)
3187             add_cppflags --sysroot="$sysroot"
3188             add_ldflags --sysroot="$sysroot"
3189         ;;
3190         tms470)
3191             add_cppflags -I"$sysinclude"
3192             add_ldflags  --sysroot="$sysroot"
3193         ;;
3194     esac
3195 fi
3196
3197 if test "$cpu" = host; then
3198     enabled cross_compile &&
3199         die "--cpu=host makes no sense when cross-compiling."
3200
3201     case "$cc_type" in
3202         gcc|llvm_gcc)
3203             check_native(){
3204                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3205                 sed -n "/cc1.*$1=/{
3206                             s/.*$1=\\([^ ]*\\).*/\\1/
3207                             p
3208                             q
3209                         }" $TMPE
3210             }
3211             cpu=$(check_native -march || check_native -mcpu)
3212         ;;
3213     esac
3214
3215     test "${cpu:-host}" = host &&
3216         die "--cpu=host not supported with compiler $cc"
3217 fi
3218
3219 # Deal with common $arch aliases
3220 case "$arch" in
3221     aarch64|arm64)
3222         arch="aarch64"
3223     ;;
3224     arm*)
3225         arch="arm"
3226     ;;
3227     mips*|IP*)
3228         arch="mips"
3229     ;;
3230     parisc*|hppa*)
3231         arch="parisc"
3232     ;;
3233     "Power Macintosh"|ppc*|powerpc*)
3234         arch="ppc"
3235     ;;
3236     s390|s390x)
3237         arch="s390"
3238     ;;
3239     sh4|sh)
3240         arch="sh4"
3241     ;;
3242     sun4u|sparc*)
3243         arch="sparc"
3244     ;;
3245     tilegx|tile-gx)
3246         arch="tilegx"
3247     ;;
3248     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3249         arch="x86"
3250     ;;
3251 esac
3252
3253 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3254 enable $arch
3255
3256 # Add processor-specific flags
3257 if enabled aarch64; then
3258
3259     case $cpu in
3260         armv*)
3261             cpuflags="-march=$cpu"
3262         ;;
3263         *)
3264             cpuflags="-mcpu=$cpu"
3265         ;;
3266     esac
3267
3268 elif enabled alpha; then
3269
3270     cpuflags="-mcpu=$cpu"
3271
3272 elif enabled arm; then
3273
3274     check_arm_arch() {
3275         check_cpp_condition stddef.h \
3276             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3277             $cpuflags
3278     }
3279
3280     probe_arm_arch() {
3281         if   check_arm_arch 4;        then echo armv4;
3282         elif check_arm_arch 4T;       then echo armv4t;
3283         elif check_arm_arch 5;        then echo armv5;
3284         elif check_arm_arch 5E;       then echo armv5e;
3285         elif check_arm_arch 5T;       then echo armv5t;
3286         elif check_arm_arch 5TE;      then echo armv5te;
3287         elif check_arm_arch 5TEJ;     then echo armv5te;
3288         elif check_arm_arch 6;        then echo armv6;
3289         elif check_arm_arch 6J;       then echo armv6j;
3290         elif check_arm_arch 6K;       then echo armv6k;
3291         elif check_arm_arch 6Z;       then echo armv6z;
3292         elif check_arm_arch 6ZK;      then echo armv6zk;
3293         elif check_arm_arch 6T2;      then echo armv6t2;
3294         elif check_arm_arch 7;        then echo armv7;
3295         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3296         elif check_arm_arch 7S;       then echo armv7-a;
3297         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3298         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3299         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3300         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3301         fi
3302     }
3303
3304     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3305
3306     case $cpu in
3307         armv*)
3308             cpuflags="-march=$cpu"
3309             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3310         ;;
3311         *)
3312             cpuflags="-mcpu=$cpu"
3313             case $cpu in
3314                 cortex-a*)                               subarch=armv7a  ;;
3315                 cortex-r*)                               subarch=armv7r  ;;
3316                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3317                 arm11*)                                  subarch=armv6   ;;
3318                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3319                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3320                 *)                             subarch=$(probe_arm_arch) ;;
3321             esac
3322         ;;
3323     esac
3324
3325     case "$subarch" in
3326         armv5t*)    enable fast_clz                ;;
3327         armv[6-8]*) enable fast_clz fast_unaligned ;;
3328     esac
3329
3330 elif enabled avr32; then
3331
3332     case $cpu in
3333         ap7[02]0[0-2])
3334             subarch="avr32_ap"
3335             cpuflags="-mpart=$cpu"
3336         ;;
3337         ap)
3338             subarch="avr32_ap"
3339             cpuflags="-march=$cpu"
3340         ;;
3341         uc3[ab]*)
3342             subarch="avr32_uc"
3343             cpuflags="-mcpu=$cpu"
3344         ;;
3345         uc)
3346             subarch="avr32_uc"
3347             cpuflags="-march=$cpu"
3348         ;;
3349     esac
3350
3351 elif enabled bfin; then
3352
3353     cpuflags="-mcpu=$cpu"
3354
3355 elif enabled mips; then
3356
3357     cpuflags="-march=$cpu"
3358
3359 elif enabled ppc; then
3360
3361     disable ldbrx
3362
3363     case $(tolower $cpu) in
3364         601|ppc601|powerpc601)
3365             cpuflags="-mcpu=601"
3366             disable altivec
3367         ;;
3368         603*|ppc603*|powerpc603*)
3369             cpuflags="-mcpu=603"
3370             disable altivec
3371         ;;
3372         604*|ppc604*|powerpc604*)
3373             cpuflags="-mcpu=604"
3374             disable altivec
3375         ;;
3376         g3|75*|ppc75*|powerpc75*)
3377             cpuflags="-mcpu=750"
3378             disable altivec
3379         ;;
3380         g4|745*|ppc745*|powerpc745*)
3381             cpuflags="-mcpu=7450"
3382             disable vsx
3383         ;;
3384         74*|ppc74*|powerpc74*)
3385             cpuflags="-mcpu=7400"
3386             disable vsx
3387         ;;
3388         g5|970|ppc970|powerpc970)
3389             cpuflags="-mcpu=970"
3390             disable vsx
3391         ;;
3392         power[3-6]*)
3393             cpuflags="-mcpu=$cpu"
3394             disable vsx
3395         ;;
3396         power[7-8]*)
3397             cpuflags="-mcpu=$cpu"
3398             enable ldbrx
3399         ;;
3400         cell)
3401             cpuflags="-mcpu=cell"
3402             enable ldbrx
3403             disable vsx
3404         ;;
3405         e500mc)
3406             cpuflags="-mcpu=e500mc"
3407             disable altivec
3408         ;;
3409         e500v2)
3410             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3411             disable altivec
3412             disable dcbzl
3413         ;;
3414         e500)
3415             cpuflags="-mcpu=8540 -mhard-float"
3416             disable altivec
3417             disable dcbzl
3418         ;;
3419     esac
3420
3421 elif enabled sparc; then
3422
3423     case $cpu in
3424         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3425             cpuflags="-mcpu=$cpu"
3426         ;;
3427         ultrasparc*|niagara[234])
3428             cpuflags="-mcpu=$cpu"
3429         ;;
3430     esac
3431
3432 elif enabled x86; then
3433
3434     case $cpu in
3435         i[345]86|pentium)
3436             cpuflags="-march=$cpu"
3437             disable i686
3438             disable mmx
3439         ;;
3440         # targets that do NOT support nopl and conditional mov (cmov)
3441         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3442             cpuflags="-march=$cpu"
3443             disable i686
3444         ;;
3445         # targets that do support nopl and conditional mov (cmov)
3446         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3447             cpuflags="-march=$cpu"
3448             enable i686
3449             enable fast_cmov
3450         ;;
3451         # targets that do support conditional mov but on which it's slow
3452         pentium4|pentium4m|prescott|nocona)
3453             cpuflags="-march=$cpu"
3454             enable i686
3455             disable fast_cmov
3456         ;;
3457     esac
3458
3459 fi
3460
3461 if [ "$cpu" != generic ]; then
3462     add_cflags  $cpuflags
3463     add_asflags $cpuflags
3464     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3465 fi
3466
3467 # compiler sanity check
3468 check_exec <<EOF
3469 int main(void){ return 0; }
3470 EOF
3471 if test "$?" != 0; then
3472     echo "$cc is unable to create an executable file."
3473     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3474         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3475         echo "Only do this if you know what cross compiling means."
3476     fi
3477     die "C compiler test failed."
3478 fi
3479
3480 add_cppflags -D_ISOC99_SOURCE
3481 check_cflags -std=c99
3482 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3483 #include <stdlib.h>
3484 EOF
3485 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3486 #include <stdlib.h>
3487 EOF
3488
3489 add_host_cppflags -D_ISOC99_SOURCE
3490 check_host_cflags -std=c99
3491 check_host_cflags -Wall
3492 check_host_cflags -O3
3493
3494 check_64bit(){
3495     arch32=$1
3496     arch64=$2
3497     expr=$3
3498     check_code cc "" "int test[2*($expr) - 1]" &&
3499         subarch=$arch64 || subarch=$arch32
3500 }
3501
3502 case "$arch" in
3503     aarch64|alpha|ia64)
3504         spic=$shared
3505     ;;
3506     mips)
3507         check_64bit mips mips64 '_MIPS_SIM > 1'
3508         spic=$shared
3509     ;;
3510     parisc)
3511         check_64bit parisc parisc64 'sizeof(void *) > 4'
3512         spic=$shared
3513     ;;
3514     ppc)
3515         check_64bit ppc ppc64 'sizeof(void *) > 4'
3516         spic=$shared
3517     ;;
3518     s390)
3519         check_64bit s390 s390x 'sizeof(void *) > 4'
3520         spic=$shared
3521     ;;
3522     sparc)
3523         check_64bit sparc sparc64 'sizeof(void *) > 4'
3524         spic=$shared
3525     ;;
3526     x86)
3527         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3528         if test "$subarch" = "x86_64"; then
3529             spic=$shared
3530         fi
3531     ;;
3532 esac
3533
3534 enable $subarch
3535 enabled spic && enable_weak pic
3536
3537 # OS specific
3538 case $target_os in
3539     aix)
3540         SHFLAGS=-shared
3541         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3542         enabled shared && add_ldflags -Wl,-brtl
3543         ;;
3544     android)
3545         disable symver
3546         enable section_data_rel_ro
3547         SLIB_INSTALL_NAME='$(SLIBNAME)'
3548         SLIB_INSTALL_LINKS=
3549         # soname not set on purpose
3550         SHFLAGS=-shared
3551         ;;
3552     haiku)
3553         prefix_default="/boot/common"
3554         network_extralibs="-lnetwork"
3555         host_libs=
3556         ;;
3557     sunos)
3558         SHFLAGS='-shared -Wl,-h,$$(@F)'
3559         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3560         network_extralibs="-lsocket -lnsl"
3561         # When using suncc to build, the Solaris linker will mark
3562         # an executable with each instruction set encountered by
3563         # the Solaris assembler.  As our libraries contain their own
3564         # guards for processor-specific code, instead suppress
3565         # generation of the HWCAPS ELF section on Solaris x86 only.
3566         enabled_all suncc x86 &&
3567             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3568             add_ldflags -Wl,-M,mapfile
3569         nm_default='nm -P -g'
3570         ;;
3571     netbsd)
3572         disable symver
3573         oss_indev_extralibs="-lossaudio"
3574         oss_outdev_extralibs="-lossaudio"
3575         ;;
3576     openbsd|bitrig)
3577         disable symver
3578         SHFLAGS='-shared'
3579         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3580         SLIB_INSTALL_LINKS=
3581         oss_indev_extralibs="-lossaudio"
3582         oss_outdev_extralibs="-lossaudio"
3583         ;;
3584     dragonfly)
3585         disable symver
3586         ;;
3587     freebsd)
3588         ;;
3589     bsd/os)
3590         add_extralibs -lpoll -lgnugetopt
3591         ;;
3592     darwin)
3593         enabled ppc && add_asflags -force_cpusubtype_ALL
3594         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3595         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3596         add_ldflags -Wl,-dynamic,-search_paths_first
3597         SLIBSUF=".dylib"
3598         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3599         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3600         objformat="macho"
3601         enabled x86_64 && objformat="macho64"
3602         enabled_any pic shared ||
3603             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3604         ;;
3605     mingw32*)
3606         if test $target_os = "mingw32ce"; then
3607             disable network
3608         else
3609             target_os=mingw32
3610         fi
3611         LIBTARGET=i386
3612         if enabled x86_64; then
3613             LIBTARGET="i386:x86-64"
3614         elif enabled arm; then
3615             LIBTARGET=arm-wince
3616         fi
3617         check_ldflags -Wl,--nxcompat
3618         check_ldflags -Wl,--dynamicbase
3619         shlibdir_default="$bindir_default"
3620         SLIBPREF=""
3621         SLIBSUF=".dll"
3622         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3623         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3624         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3625         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3626         SLIB_INSTALL_LINKS=
3627         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3628         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3629         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3630         objformat="win32"
3631         dlltool="${cross_prefix}dlltool"
3632         ranlib=:
3633         enable dos_paths
3634         ;;
3635     win32|win64)
3636         disable symver
3637         if enabled shared; then
3638             # Link to the import library instead of the normal static library
3639             # for shared libs.
3640             LD_LIB='%.lib'
3641             # Cannot build both shared and static libs with MSVC or icl.
3642             disable static
3643         fi
3644         shlibdir_default="$bindir_default"
3645         SLIBPREF=""
3646         SLIBSUF=".dll"
3647         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3648         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3649         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3650         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3651         SLIB_INSTALL_LINKS=
3652         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3653         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3654         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3655         objformat="win32"
3656         ranlib=:
3657         enable dos_paths
3658         ;;
3659     cygwin*)
3660         target_os=cygwin
3661         shlibdir_default="$bindir_default"
3662         SLIBPREF="cyg"
3663         SLIBSUF=".dll"
3664         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3665         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3666         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3667         SLIB_INSTALL_LINKS=
3668         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3669         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3670         objformat="win32"
3671         enable dos_paths
3672         ;;
3673     *-dos|freedos|opendos)
3674         network_extralibs="-lsocket"
3675         objformat="coff"
3676         enable dos_paths
3677         add_cppflags -U__STRICT_ANSI__
3678         ;;
3679     linux)
3680         enable dv1394
3681         enable section_data_rel_ro
3682         ;;
3683     irix*)
3684         target_os=irix
3685         ranlib="echo ignoring ranlib"
3686         ;;
3687     os/2*)
3688         ln_s="cp -f"
3689         objformat="aout"
3690         add_cppflags -D_GNU_SOURCE
3691         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3692         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3693         LIBSUF="_s.a"
3694         SLIBPREF=""
3695         SLIBSUF=".dll"
3696         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3697         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3698         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3699             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3700             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3701             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3702             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3703         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3704             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3705         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3706         enable dos_paths
3707         ;;
3708     gnu/kfreebsd)
3709         add_cppflags -D_BSD_SOURCE
3710         ;;
3711     gnu)
3712         ;;
3713     qnx)
3714         add_cppflags -D_QNX_SOURCE
3715         network_extralibs="-lsocket"
3716         ;;
3717     symbian)
3718         SLIBSUF=".dll"
3719         enable dos_paths
3720         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3721         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3722         add_ldflags -Wl,--target1-abs,--no-undefined \
3723                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3724                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3725         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3726                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3727                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3728         ;;
3729     osf1)
3730         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3731         ;;
3732     minix)
3733         ;;
3734     plan9)
3735         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3736                      -D_REENTRANT_SOURCE        \
3737                      -D_RESEARCH_SOURCE         \
3738                      -DFD_SETSIZE=96            \
3739                      -DHAVE_SOCK_OPTS
3740         add_compat strtod.o strtod=avpriv_strtod
3741         network_extralibs='-lbsd'
3742         exeobjs=compat/plan9/main.o
3743         cp_f='cp'
3744         ;;
3745     none)
3746         ;;
3747     *)
3748         die "Unknown OS '$target_os'."
3749         ;;
3750 esac
3751
3752 # determine libc flavour
3753
3754 probe_libc(){
3755     pfx=$1
3756     pfx_no_=${pfx%_}
3757     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3758     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3759         eval ${pfx}libc_type=uclibc
3760         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3761     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3762         eval ${pfx}libc_type=glibc
3763         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3764     # MinGW headers can be installed on Cygwin, so check for newlib first.
3765     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3766         eval ${pfx}libc_type=newlib
3767         add_${pfx}cppflags -U__STRICT_ANSI__
3768     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3769     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3770         eval ${pfx}libc_type=mingw64
3771         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3772         eval test \$${pfx_no_}cc_type = "gcc" &&
3773             add_${pfx}cppflags -D__printf__=__gnu_printf__
3774     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3775          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3776         eval ${pfx}libc_type=mingw32
3777         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3778             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3779             die "ERROR: MinGW32 runtime version must be >= 3.15."
3780         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3781         eval test \$${pfx_no_}cc_type = "gcc" &&
3782             add_${pfx}cppflags -D__printf__=__gnu_printf__
3783     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3784         eval ${pfx}libc_type=msvcrt
3785         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3786             if [ "$pfx" = host_ ]; then
3787                 add_host_cppflags -Dsnprintf=_snprintf
3788             else
3789                 add_compat strtod.o strtod=avpriv_strtod
3790                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3791                                              _snprintf=avpriv_snprintf  \
3792                                              vsnprintf=avpriv_vsnprintf
3793             fi
3794         fi
3795         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3796         # 0x601 by default unless something else is set by the user.
3797         # This can easily lead to us detecting functions only present
3798         # in such new versions and producing binaries requiring windows 7.0.
3799         # Therefore explicitly set the default to XP unless the user has
3800         # set something else on the command line.
3801         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3802         # family. For these cases, configure is free to use any functions
3803         # found in the SDK headers by default. (Alternatively, we could force
3804         # _WIN32_WINNT to 0x0602 in that case.)
3805         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3806             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3807 #ifdef WINAPI_FAMILY
3808 #include <winapifamily.h>
3809 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3810 #error not desktop
3811 #endif
3812 #endif
3813 EOF
3814     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3815         eval ${pfx}libc_type=klibc
3816     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3817         eval ${pfx}libc_type=bionic
3818     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3819         eval ${pfx}libc_type=solaris
3820         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3821     else
3822         eval ${pfx}libc_type=default
3823         add_${pfx}cppflags -D_DEFAULT_SOURCE
3824     fi
3825 }
3826
3827 probe_libc
3828 test -n "$libc_type" && enable libc_$libc_type
3829 probe_libc host_
3830 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3831
3832 case $libc_type in
3833     bionic)
3834         add_compat strtod.o strtod=avpriv_strtod
3835         ;;
3836 esac
3837
3838 # hacks for compiler/libc/os combinations
3839
3840 if enabled_all tms470 libc_glibc; then
3841     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3842     add_cppflags -D__USER_LABEL_PREFIX__=
3843     add_cppflags -D__builtin_memset=memset
3844     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3845     add_cflags   -pds=48    # incompatible redefinition of macro
3846 fi
3847
3848 if enabled_all ccc libc_glibc; then
3849     add_ldflags -Wl,-z,now  # calls to libots crash without this
3850 fi
3851
3852 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3853     add_cppflags '-I\$(SRC_PATH)/compat/float'
3854
3855 esc(){
3856     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3857 }
3858
3859 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3860
3861 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3862
3863 set_default $PATHS_LIST
3864 set_default nm
3865
3866 # we need to build at least one lib type
3867 if ! enabled_any static shared; then
3868     cat <<EOF
3869 At least one library type must be built.
3870 Specify --enable-static to build the static libraries or --enable-shared to
3871 build the shared libraries as well. To only build the shared libraries specify
3872 --disable-static in addition to --enable-shared.
3873 EOF
3874     exit 1;
3875 fi
3876
3877 die_license_disabled() {
3878     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3879 }
3880
3881 die_license_disabled gpl libcdio
3882 die_license_disabled gpl libx264
3883 die_license_disabled gpl libx265
3884 die_license_disabled gpl libxavs
3885 die_license_disabled gpl libxvid
3886 die_license_disabled gpl x11grab
3887
3888 die_license_disabled nonfree libfaac
3889 die_license_disabled nonfree libfdk_aac
3890 die_license_disabled nonfree nvenc
3891 die_license_disabled nonfree openssl
3892
3893 die_license_disabled version3 libopencore_amrnb
3894 die_license_disabled version3 libopencore_amrwb
3895 die_license_disabled version3 libvo_aacenc
3896 die_license_disabled version3 libvo_amrwbenc
3897
3898 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3899
3900 disabled optimizations || check_cflags -fomit-frame-pointer
3901
3902 enable_weak_pic() {
3903     disabled pic && return
3904     enable pic
3905     add_cppflags -DPIC
3906     case "$target_os" in
3907     mingw*|cygwin*)
3908         ;;
3909     *)
3910         add_cflags -fPIC
3911         ;;
3912     esac
3913     add_asflags  -fPIC
3914 }
3915
3916 enabled pic && enable_weak_pic
3917
3918 check_cc <<EOF || die "Symbol mangling check failed."
3919 int ff_extern;
3920 EOF
3921 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3922 extern_prefix=${sym%%ff_extern*}
3923
3924 check_cc <<EOF && enable_weak inline_asm
3925 void foo(void) { __asm__ volatile ("" ::); }
3926 EOF
3927
3928 _restrict=
3929 for restrict_keyword in restrict __restrict__ __restrict; do
3930     check_cc <<EOF && _restrict=$restrict_keyword && break
3931 void foo(char * $restrict_keyword p);
3932 EOF
3933 done
3934
3935 check_cc <<EOF && enable pragma_deprecated
3936 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3937 EOF
3938
3939 check_cc <<EOF && enable attribute_packed
3940 struct { int x; } __attribute__((packed)) x;
3941 EOF
3942
3943 check_cc <<EOF && enable attribute_may_alias
3944 union { int x; } __attribute__((may_alias)) x;
3945 EOF
3946
3947 check_cc <<EOF || die "endian test failed"
3948 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3949 EOF
3950 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3951
3952 check_gas() {
3953     log "check_gas using '$as' as AS"
3954     # :vararg is used on aarch64, arm and ppc altivec
3955     check_as <<EOF || return 1
3956 .macro m n, y:vararg=0
3957 \n: .int \y
3958 .endm
3959 m x
3960 EOF
3961     # .altmacro is only used in arm asm
3962     ! enabled arm || check_as <<EOF || return 1
3963 .altmacro
3964 EOF
3965     enable gnu_as
3966     return 0
3967 }
3968
3969 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3970     nogas=:
3971     enabled_any arm aarch64 && nogas=die
3972     enabled_all ppc altivec && nogas=warn
3973     as_noop=-v
3974
3975     case $as_type in
3976         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3977         gcc)  gaspp_as_type=gas ;;
3978         *)    gaspp_as_type=$as_type ;;
3979     esac
3980
3981     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3982
3983     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3984         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3985
3986     if ! check_gas ; then
3987         as=${gas:=$as}
3988         check_gas || \
3989             $nogas "GNU assembler not found, install/update gas-preprocessor"
3990     fi
3991
3992     check_as <<EOF && enable as_func
3993 .func test
3994 .endfunc
3995 EOF
3996 fi
3997
3998 check_inline_asm inline_asm_labels '"1:\n"'
3999
4000 if enabled aarch64; then
4001     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4002     # internal assembler in clang 3.3 does not support this instruction
4003     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4004     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4005
4006     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4007
4008 elif enabled alpha; then
4009
4010     check_cflags -mieee
4011
4012 elif enabled arm; then
4013
4014     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4015     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4016     enabled thumb && check_cflags -mthumb || check_cflags -marm
4017
4018     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4019         enable vfp_args
4020     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4021         enable vfp_args
4022     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4023         case "${cross_prefix:-$cc}" in
4024             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4025             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4026 __asm__ (".eabi_attribute 28, 1");
4027 int main(void) { return 0; }
4028 EOF
4029         esac
4030         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4031     fi
4032
4033     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4034     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4035     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4036     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4037     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4038     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4039
4040     [ $target_os = linux ] || [ $target_os = android ] ||
4041         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4042             $ARCH_EXT_LIST_ARM
4043
4044     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4045
4046     check_as <<EOF && enable as_dn_directive
4047 ra .dn d0.i16
4048 .unreq ra
4049 EOF
4050
4051     # llvm's integrated assembler supports .object_arch from llvm 3.5
4052     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4053 .object_arch armv4
4054 EOF
4055
4056     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4057
4058 elif enabled mips; then
4059
4060     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4061
4062 elif enabled parisc; then
4063
4064     if enabled gcc; then
4065         case $($cc -dumpversion) in
4066             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4067         esac
4068     fi
4069
4070 elif enabled ppc; then
4071
4072     enable local_aligned_8 local_aligned_16
4073
4074     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4075     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4076     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4077     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4078
4079     # AltiVec flags: The FSF version of GCC differs from the Apple version
4080     if enabled altivec; then
4081         check_cflags -maltivec -mabi=altivec &&
4082         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4083         check_cflags -faltivec
4084
4085         # check if our compiler supports Motorola AltiVec C API
4086         check_cc <<EOF || disable altivec
4087 $inc_altivec_h
4088 int main(void) {
4089     vector signed int v1 = (vector signed int) { 0 };
4090     vector signed int v2 = (vector signed int) { 1 };
4091     v1 = vec_add(v1, v2);
4092     return 0;
4093 }
4094 EOF
4095
4096         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4097     fi
4098
4099     if enabled vsx; then
4100         check_cflags -mvsx &&
4101         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4102     fi
4103
4104     if enabled power8; then
4105         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4106     fi
4107
4108 elif enabled x86; then
4109
4110     check_builtin rdtsc    intrin.h   "__rdtsc()"
4111     check_builtin mm_empty mmintrin.h "_mm_empty()"
4112
4113     enable local_aligned_8 local_aligned_16
4114
4115     # check whether EBP is available on x86
4116     # As 'i' is stored on the stack, this program will crash
4117     # if the base pointer is used to access it because the
4118     # base pointer is cleared in the inline assembly code.
4119     check_exec_crash <<EOF && enable ebp_available
4120 volatile int i=0;
4121 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4122 return i;
4123 EOF
4124
4125     # check whether EBX is available on x86
4126     check_inline_asm ebx_available '""::"b"(0)' &&
4127         check_inline_asm ebx_available '"":::"%ebx"'
4128
4129     # check whether xmm clobbers are supported
4130     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4131
4132     # check whether binutils is new enough to compile SSSE3/MMXEXT
4133     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4134     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4135
4136     if ! disabled_any asm mmx yasm; then
4137         if check_cmd $yasmexe --version; then
4138             enabled x86_64 && yasm_extra="-m amd64"
4139             yasm_debug="-g dwarf2"
4140         elif check_cmd nasm -v; then
4141             yasmexe=nasm
4142             yasm_debug="-g -F dwarf"
4143             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4144         fi
4145
4146         YASMFLAGS="-f $objformat $yasm_extra"
4147         enabled pic               && append YASMFLAGS "-DPIC"
4148         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4149         case "$objformat" in
4150             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4151         esac
4152
4153         check_yasm "movbe ecx, [5]" && enable yasm ||
4154             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4155         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4156         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4157         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4158         check_yasm "CPU amdnop" || disable cpunop
4159     fi
4160
4161     case "$cpu" in
4162         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4163             disable fast_clz
4164         ;;
4165     esac
4166
4167 fi
4168
4169 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4170
4171 check_ldflags -Wl,--as-needed
4172
4173 if check_func dlopen; then
4174     ldl=
4175 elif check_func dlopen -ldl; then
4176     ldl=-ldl
4177 fi
4178
4179 if ! disabled network; then
4180     check_func getaddrinfo $network_extralibs
4181     check_func getservbyport $network_extralibs
4182     check_func inet_aton $network_extralibs
4183
4184     check_type netdb.h "struct addrinfo"
4185     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4186     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4187     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4188     check_type poll.h "struct pollfd"
4189     check_type netinet/sctp.h "struct sctp_event_subscribe"
4190     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4191     check_type netinet/in.h "struct sockaddr_in6"
4192     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4193     check_type "sys/types.h sys/socket.h" socklen_t
4194
4195     # Prefer arpa/inet.h over winsock2
4196     if check_header arpa/inet.h ; then
4197         check_func closesocket
4198     elif check_header winsock2.h ; then
4199         check_func_headers winsock2.h closesocket -lws2 &&
4200             network_extralibs="-lws2" ||
4201         { check_func_headers winsock2.h closesocket -lws2_32 &&
4202             network_extralibs="-lws2_32"; } || disable winsock2_h network
4203         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4204
4205         check_type ws2tcpip.h socklen_t
4206         check_type ws2tcpip.h "struct addrinfo"
4207         check_type ws2tcpip.h "struct group_source_req"
4208         check_type ws2tcpip.h "struct ip_mreq_source"
4209         check_type ws2tcpip.h "struct ipv6_mreq"
4210         check_type winsock2.h "struct pollfd"
4211         check_struct winsock2.h "struct sockaddr" sa_len
4212         check_type ws2tcpip.h "struct sockaddr_in6"
4213         check_type ws2tcpip.h "struct sockaddr_storage"
4214     else
4215         disable network
4216     fi
4217 fi
4218
4219 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4220 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4221 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4222 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4223
4224 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4225 check_func  ${malloc_prefix}memalign            && enable memalign
4226 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4227
4228 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4229     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4230
4231 check_func  fcntl
4232 check_func  fork
4233 check_func  gethrtime
4234 check_func  getopt
4235 check_func  getrusage
4236 check_func  gettimeofday
4237 check_func  gmtime_r
4238 check_func  isatty
4239 check_func  localtime_r
4240 check_func  mach_absolute_time
4241 check_func  mkstemp
4242 check_func  mmap
4243 check_func  mprotect
4244 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4245 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4246 check_func  sched_getaffinity
4247 check_func  setrlimit
4248 check_func  strerror_r
4249 check_func  sysconf
4250 check_func  sysctl
4251 check_func  usleep
4252
4253 check_func_headers io.h setmode
4254 check_func_headers stdlib.h getenv
4255
4256 check_func_headers windows.h CoTaskMemFree -lole32
4257 check_func_headers windows.h GetProcessAffinityMask
4258 check_func_headers windows.h GetProcessTimes
4259 check_func_headers windows.h GetSystemTimeAsFileTime
4260 check_func_headers windows.h LoadLibrary
4261 check_func_headers windows.h MapViewOfFile
4262 check_func_headers windows.h SetConsoleTextAttribute
4263 check_func_headers windows.h Sleep
4264 check_func_headers windows.h VirtualAlloc
4265 check_struct windows.h "CONDITION_VARIABLE" Ptr
4266
4267 check_header direct.h
4268 check_header dlfcn.h
4269 check_header d3d11.h
4270 check_header dxva.h
4271 check_header dxva2api.h
4272 check_header io.h
4273 check_header mach/mach_time.h
4274 check_header malloc.h
4275 check_header poll.h
4276 check_header sys/mman.h
4277 check_header sys/param.h
4278 check_header sys/resource.h
4279 check_header sys/select.h
4280 check_header sys/time.h
4281 check_header sys/un.h
4282 check_header unistd.h
4283 check_header valgrind/valgrind.h
4284 check_header vdpau/vdpau.h
4285 check_header vdpau/vdpau_x11.h
4286 check_header VideoDecodeAcceleration/VDADecoder.h
4287 check_header windows.h
4288 check_header X11/extensions/XvMClib.h
4289
4290 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4291 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4292 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4293
4294 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4295
4296 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4297 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4298 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4299
4300 if ! disabled w32threads && ! enabled pthreads; then
4301     check_func_headers "windows.h process.h" _beginthreadex &&
4302         enable w32threads || disable w32threads
4303 fi
4304
4305 # check for some common methods of building with pthread support
4306 # do this before the optional library checks as some of them require pthreads
4307 if ! disabled pthreads && ! enabled w32threads; then
4308     enable pthreads
4309     if check_func pthread_join -pthread; then
4310         add_cflags -pthread
4311         add_extralibs -pthread
4312     elif check_func pthread_join -pthreads; then
4313         add_cflags -pthreads
4314         add_extralibs -pthreads
4315     elif check_func pthread_join -lpthreadGC2; then
4316         add_extralibs -lpthreadGC2
4317     elif check_lib pthread.h pthread_join -lpthread; then
4318         :
4319     elif ! check_func pthread_join; then
4320         disable pthreads
4321     fi
4322 fi
4323
4324 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4325 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4326
4327 check_lib math.h sin -lm && LIBM="-lm"
4328 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4329
4330 atan2f_args=2
4331 ldexpf_args=2
4332 powf_args=2
4333
4334 for func in $MATH_FUNCS; do
4335     eval check_mathfunc $func \${${func}_args:-1}
4336 done
4337
4338 # these are off by default, so fail if requested and not available
4339 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4340                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4341                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4342 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4343 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4344 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4345 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4346 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4347 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4348 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4349 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4350 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4351                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4352                                done || die "ERROR: libgsm not found"; }
4353 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4354 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4355 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4356 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4357 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4358 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4359 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4360 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4361                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4362 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4363 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4364 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4365 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4366 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4367 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4368 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4369 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4370 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4371 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4372 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4373 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4374     enabled libvpx_vp8_decoder && {
4375         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4376             disable libvpx_vp8_decoder;
4377     }
4378     enabled libvpx_vp8_encoder && {
4379         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4380             disable libvpx_vp8_encoder;
4381     }
4382     enabled libvpx_vp9_decoder && {
4383         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4384             disable libvpx_vp9_decoder;
4385     }
4386     enabled libvpx_vp9_encoder && {
4387         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4388             disable libvpx_vp9_encoder;
4389     }
4390     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4391         die "libvpx enabled but no supported decoders found"
4392     fi
4393 }
4394 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4395 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4396 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4397                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4398                                die "ERROR: libx264 version must be >= 0.118."; } &&
4399                              { check_cpp_condition x264.h "X264_MPEG2" &&
4400                                enable libx262; }
4401 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4402                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4403                                die "ERROR: libx265 version must be >= 57."; }
4404 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4405 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4406 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4407                                 { ! enabled cross_compile && {
4408                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4409                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4410                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4411                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4412                                die "ERROR: mmal not found"; }
4413 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4414                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4415                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4416                                die "ERROR: openssl not found"; }
4417
4418 if enabled gnutls; then
4419     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4420     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4421 fi
4422
4423 # libdc1394 check
4424 if enabled libdc1394; then
4425     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4426         enable libdc1394_2; } ||
4427     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4428         enable libdc1394_1; } ||
4429     die "ERROR: No version of libdc1394 found "
4430 fi
4431
4432 if enabled nvenc; then
4433     check_header cuda.h || die "ERROR: cuda.h not found.";
4434     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4435     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4436         die "ERROR: NVENC API version 4 or older is not supported";
4437 fi
4438
4439 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4440     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4441     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4442     enable sdl
4443 fi
4444
4445 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4446 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4447
4448 check_header linux/fb.h
4449 check_header linux/videodev2.h
4450 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4451
4452 check_header sys/videoio.h
4453
4454 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4455 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4456 # w32api 3.12 had it defined wrong
4457 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4458
4459 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4460 { check_header dev/bktr/ioctl_meteor.h &&
4461   check_header dev/bktr/ioctl_bt848.h; } ||
4462 { check_header machine/ioctl_meteor.h &&
4463   check_header machine/ioctl_bt848.h; } ||
4464 { check_header dev/video/meteor/ioctl_meteor.h &&
4465   check_header dev/video/bktr/ioctl_bt848.h; } ||
4466 check_header dev/ic/bt8xx.h
4467
4468 check_header sndio.h
4469 check_header sys/soundcard.h
4470 check_header soundcard.h
4471
4472 enabled_any alsa_indev alsa_outdev &&
4473     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4474
4475 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4476     check_func jack_port_get_latency_range -ljack
4477
4478 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4479
4480 if enabled libcdio; then
4481     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4482     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4483     die "ERROR: No usable libcdio/cdparanoia found"
4484 fi
4485
4486 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4487
4488 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4489     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4490         enabled libxcb && die "ERROR: libxcb not found";
4491     } && disable x11grab && enable libxcb
4492
4493     disabled libxcb_shm ||
4494         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4495             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4496         } && check_header sys/shm.h && enable libxcb_shm
4497
4498     disabled libxcb_xfixes ||
4499         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4500             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4501         } && enable libxcb_xfixes
4502
4503     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4504     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4505 fi
4506
4507 if enabled x11grab; then
4508     enabled xlib || die "ERROR: Xlib not found"
4509     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4510     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4511 fi
4512
4513 enabled vaapi && enabled xlib &&
4514     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4515     enable vaapi_x11
4516
4517 enabled vdpau &&
4518     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4519     disable vdpau
4520
4521 enabled vdpau && enabled xlib &&
4522     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4523     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4524     enable vdpau_x11
4525
4526 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4527
4528 # add some useful compiler flags if supported
4529 check_cflags -Wdeclaration-after-statement
4530 check_cflags -Wall
4531 check_cflags -Wdisabled-optimization
4532 check_cflags -Wpointer-arith
4533 check_cflags -Wredundant-decls
4534 check_cflags -Wcast-qual
4535 check_cflags -Wwrite-strings
4536 check_cflags -Wtype-limits
4537 check_cflags -Wundef
4538 check_cflags -Wmissing-prototypes
4539 check_cflags -Wstrict-prototypes
4540 enabled extra_warnings && check_cflags -Winline
4541
4542 check_disable_warning(){
4543     warning_flag=-W${1#-Wno-}
4544     test_cflags $warning_flag && add_cflags $1
4545 }
4546
4547 check_disable_warning -Wno-parentheses
4548 check_disable_warning -Wno-switch
4549 check_disable_warning -Wno-format-zero-length
4550 check_disable_warning -Wno-pointer-sign
4551
4552 # add some linker flags
4553 check_ldflags -Wl,--warn-common
4554 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4555 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4556 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4557
4558 # add some strip flags
4559 # -wN '..@*' is more selective than -x, but not available everywhere.
4560 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4561
4562 enabled neon_clobber_test &&
4563     check_ldflags -Wl,--wrap,avcodec_open2              \
4564                   -Wl,--wrap,avcodec_decode_audio4      \
4565                   -Wl,--wrap,avcodec_decode_video2      \
4566                   -Wl,--wrap,avcodec_decode_subtitle2   \
4567                   -Wl,--wrap,avcodec_encode_audio2      \
4568                   -Wl,--wrap,avcodec_encode_video2      \
4569                   -Wl,--wrap,avcodec_encode_subtitle    \
4570                   -Wl,--wrap,avresample_convert ||
4571     disable neon_clobber_test
4572
4573 enabled xmm_clobber_test &&
4574     check_ldflags -Wl,--wrap,avcodec_open2              \
4575                   -Wl,--wrap,avcodec_decode_audio4      \
4576                   -Wl,--wrap,avcodec_decode_video2      \
4577                   -Wl,--wrap,avcodec_decode_subtitle2   \
4578                   -Wl,--wrap,avcodec_encode_audio2      \
4579                   -Wl,--wrap,avcodec_encode_video2      \
4580                   -Wl,--wrap,avcodec_encode_subtitle    \
4581                   -Wl,--wrap,avresample_convert         \
4582                   -Wl,--wrap,sws_scale ||
4583     disable xmm_clobber_test
4584
4585 echo "X{};" > $TMPV
4586 if test_ldflags -Wl,--version-script,$TMPV; then
4587     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4588     check_cc <<EOF && enable symver_asm_label
4589 void ff_foo(void) __asm__ ("av_foo@VERSION");
4590 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4591 EOF
4592     check_cc <<EOF && enable symver_gnu_asm
4593 __asm__(".symver ff_foo,av_foo@VERSION");
4594 void ff_foo(void) {}
4595 EOF
4596 fi
4597
4598 if [ -z "$optflags" ]; then
4599     if enabled small; then
4600         optflags=$cflags_size
4601     elif enabled optimizations; then
4602         optflags=$cflags_speed
4603     else
4604         optflags=$cflags_noopt
4605     fi
4606 fi
4607
4608 check_optflags(){
4609     check_cflags "$@"
4610     enabled lto && check_ldflags "$@"
4611 }
4612
4613
4614 if enabled lto; then
4615     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4616     check_cflags  -flto
4617     check_ldflags -flto $cpuflags
4618 fi
4619
4620 check_optflags $optflags
4621 check_optflags -fno-math-errno
4622 check_optflags -fno-signed-zeros
4623
4624 if enabled icc; then
4625     # Just warnings, no remarks
4626     check_cflags -w1
4627     # -wd: Disable following warnings
4628     # 144, 167, 556: -Wno-pointer-sign
4629     # 1292: attribute "foo" ignored
4630     # 1419: external declaration in primary source file
4631     # 10006: ignoring unknown option -fno-signed-zeros
4632     # 10148: ignoring unknown option -Wno-parentheses
4633     # 10156: ignoring option '-W'; no argument required
4634     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4635     # 11030: Warning unknown option --as-needed
4636     # 10156: ignoring option '-export'; no argument required
4637     check_ldflags -wd10156,11030
4638     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4639     enable ebp_available
4640     if enabled x86_32; then
4641         icc_version=$($cc -dumpversion)
4642         test ${icc_version%%.*} -ge 11 &&
4643             check_cflags -falign-stack=maintain-16-byte ||
4644             disable aligned_stack
4645     fi
4646 elif enabled ccc; then
4647     # disable some annoying warnings
4648     add_cflags -msg_disable bitnotint
4649     add_cflags -msg_disable mixfuncvoid
4650     add_cflags -msg_disable nonstandcast
4651     add_cflags -msg_disable unsupieee
4652 elif enabled gcc; then
4653     check_optflags -fno-tree-vectorize
4654     check_cflags -Werror=implicit-function-declaration
4655     check_cflags -Werror=missing-prototypes
4656     check_cflags -Werror=return-type
4657     check_cflags -Werror=declaration-after-statement
4658     check_cflags -Werror=vla
4659     check_cflags -Werror=format-security
4660     check_cflags -fdiagnostics-color=auto
4661     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4662 elif enabled llvm_gcc; then
4663     check_cflags -mllvm -stack-alignment=16
4664 elif enabled clang; then
4665     check_cflags -mllvm -stack-alignment=16
4666     check_cflags -Qunused-arguments
4667     check_cflags -Werror=implicit-function-declaration
4668     check_cflags -Werror=missing-prototypes
4669     check_cflags -Werror=return-type
4670 elif enabled cparser; then
4671     add_cflags -Wno-missing-variable-declarations
4672     add_cflags -Wno-empty-statement
4673 elif enabled armcc; then
4674     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4675     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4676     # 2523: use of inline assembly is deprecated
4677     add_cflags -W${armcc_opt},--diag_suppress=2523
4678     add_cflags -W${armcc_opt},--diag_suppress=1207
4679     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4680     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4681     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4682     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4683 elif enabled tms470; then
4684     add_cflags -pds=824 -pds=837
4685     disable inline_asm
4686 elif enabled pathscale; then
4687     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4688 elif enabled_any msvc icl; then
4689     enabled x86_32 && disable aligned_stack
4690     enabled_all x86_32 debug && add_cflags -Oy-
4691     enabled debug && add_ldflags -debug
4692     enable pragma_deprecated
4693     if enabled icl; then
4694         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4695         # (correctly) on icl 13.x.
4696         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4697             add_cflags -Qansi-alias
4698         # icl will pass the inline asm tests but inline asm is currently
4699         # not supported (build will fail)
4700         disable inline_asm
4701     fi
4702     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4703     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4704     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
4705     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
4706     # (as it ends up if the restrict redefine is done before including stdlib.h), while
4707     # MSVC 2013 and newer can handle it fine.
4708     # If this declspec fails, force including stdlib.h before the restrict redefinition
4709     # happens in config.h.
4710     if [ $_restrict != restrict ]; then
4711         check_cc <<EOF || add_cflags -FIstdlib.h
4712 __declspec($_restrict) void* foo(int);
4713 EOF
4714     fi
4715     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4716 fi
4717
4718 for pfx in "" host_; do
4719     varname=${pfx%_}cc_type
4720     eval "type=\$$varname"
4721     if [ $type = "msvc" ]; then
4722         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
4723 static inline int foo(int a) { return a; }
4724 EOF
4725     fi
4726 done
4727
4728 case $as_type in
4729     clang)
4730         add_asflags -Qunused-arguments
4731     ;;
4732 esac
4733
4734 case $ld_type in
4735     clang)
4736         check_ldflags -Qunused-arguments
4737     ;;
4738 esac
4739
4740 case $target_os in
4741     osf1)
4742         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4743     ;;
4744     plan9)
4745         add_cppflags -Dmain=plan9_main
4746     ;;
4747 esac
4748
4749 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4750
4751 check_deps $CONFIG_LIST       \
4752            $CONFIG_EXTRA      \
4753            $HAVE_LIST         \
4754            $ALL_COMPONENTS    \
4755
4756 enabled_all dxva2 CoTaskMemFree &&
4757     prepend avconv_libs $($ldflags_filter "-lole32") &&
4758     enable dxva2_lib
4759
4760 ! enabled_any memalign posix_memalign aligned_malloc &&
4761     enabled simd_align_16 && enable memalign_hack
4762
4763 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4764
4765 for thread in $THREADS_LIST; do
4766     if enabled $thread; then
4767         test -n "$thread_type" &&
4768             die "ERROR: Only one thread type must be selected." ||
4769             thread_type="$thread"
4770     fi
4771 done
4772
4773 enabled zlib && add_cppflags -DZLIB_CONST
4774
4775 # conditional library dependencies, in linking order
4776 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4777 enabled resample_filter && prepend avfilter_deps "avresample"
4778 enabled scale_filter    && prepend avfilter_deps "swscale"
4779
4780 enabled opus_decoder    && prepend avcodec_deps "avresample"
4781
4782 expand_deps(){
4783     lib_deps=${1}_deps
4784     eval "deps=\$$lib_deps"
4785     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4786     unique $lib_deps
4787 }
4788
4789 map 'expand_deps $v' $LIBRARY_LIST
4790
4791 echo "install prefix            $prefix"
4792 echo "source path               $source_path"
4793 echo "C compiler                $cc"
4794 echo "C library                 $libc_type"
4795 if test "$host_cc" != "$cc"; then
4796     echo "host C compiler           $host_cc"
4797     echo "host C library            $host_libc_type"
4798 fi
4799 echo "ARCH                      $arch ($cpu)"
4800 if test "$build_suffix" != ""; then
4801     echo "build suffix              $build_suffix"
4802 fi
4803 if test "$extra_v