0ed119307d89075cbe6eeebc2f0b88d6717d731a
[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     gcrypt
1594     gmp
1595     golomb
1596     gplv3
1597     h263dsp
1598     h264chroma
1599     h264dsp
1600     h264pred
1601     h264qpel
1602     hpeldsp
1603     huffman
1604     huffyuvdsp
1605     huffyuvencdsp
1606     idctdsp
1607     iirfilter
1608     imdct15
1609     intrax8
1610     ividsp
1611     jpegtables
1612     libx262
1613     lgplv3
1614     lpc
1615     me_cmp
1616     mpeg_er
1617     mpegaudio
1618     mpegaudiodsp
1619     mpegvideo
1620     mpegvideoenc
1621     mss34dsp
1622     pixblockdsp
1623     qpeldsp
1624     qsv
1625     qsvdec
1626     qsvenc
1627     rangecoder
1628     riffdec
1629     riffenc
1630     rtpdec
1631     rtpenc_chain
1632     rv34dsp
1633     sinewin
1634     snappy
1635     startcode
1636     texturedsp
1637     texturedspenc
1638     tpeldsp
1639     videodsp
1640     vp3dsp
1641     vp56dsp
1642     vp8dsp
1643     wma_freqs
1644     wmv2dsp
1645 "
1646
1647 CMDLINE_SELECT="
1648     $ARCH_EXT_LIST
1649     $CONFIG_LIST
1650     $HAVE_LIST_CMDLINE
1651     $THREADS_LIST
1652     asm
1653     cross_compile
1654     debug
1655     extra_warnings
1656     logging
1657     lto
1658     optimizations
1659     rpath
1660 "
1661
1662 PATHS_LIST="
1663     bindir
1664     datadir
1665     docdir
1666     incdir
1667     libdir
1668     mandir
1669     prefix
1670     shlibdir
1671 "
1672
1673 CMDLINE_SET="
1674     $PATHS_LIST
1675     ar
1676     arch
1677     as
1678     build_suffix
1679     cc
1680     cpu
1681     cross_prefix
1682     dep_cc
1683     env
1684     extra_version
1685     host_cc
1686     host_cflags
1687     host_ld
1688     host_ldflags
1689     host_libs
1690     host_os
1691     ld
1692     logfile
1693     malloc_prefix
1694     nm
1695     optflags
1696     pkg_config
1697     pkg_config_flags
1698     random_seed
1699     samples
1700     sysinclude
1701     sysroot
1702     target_exec
1703     target_os
1704     target_path
1705     target_samples
1706     toolchain
1707 "
1708
1709 CMDLINE_APPEND="
1710     extra_cflags
1711     host_cppflags
1712 "
1713
1714 # code dependency declarations
1715
1716 # architecture extensions
1717
1718 armv5te_deps="arm"
1719 armv6_deps="arm"
1720 armv6t2_deps="arm"
1721 armv8_deps="aarch64"
1722 neon_deps_any="aarch64 arm"
1723 intrinsics_neon_deps="neon"
1724 vfp_deps_any="aarch64 arm"
1725 vfpv3_deps="vfp"
1726
1727 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1728
1729 altivec_deps="ppc"
1730 ppc4xx_deps="ppc"
1731 vsx_deps="altivec"
1732 power8_deps="vsx"
1733
1734 cpunop_deps="i686"
1735 x86_64_select="i686"
1736 x86_64_suggest="fast_cmov"
1737
1738 amd3dnow_deps="mmx"
1739 amd3dnowext_deps="amd3dnow"
1740 i686_deps="x86"
1741 mmx_deps="x86"
1742 mmxext_deps="mmx"
1743 sse_deps="mmxext"
1744 sse2_deps="sse"
1745 sse3_deps="sse2"
1746 ssse3_deps="sse3"
1747 sse4_deps="ssse3"
1748 sse42_deps="sse4"
1749 avx_deps="sse42"
1750 xop_deps="avx"
1751 fma3_deps="avx"
1752 fma4_deps="avx"
1753 avx2_deps="avx"
1754
1755 mmx_external_deps="yasm"
1756 mmx_inline_deps="inline_asm"
1757 mmx_suggest="mmx_external mmx_inline"
1758
1759 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1760     eval dep=\$${ext}_deps
1761     eval ${ext}_external_deps='"${dep}_external"'
1762     eval ${ext}_inline_deps='"${dep}_inline"'
1763     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1764 done
1765
1766 aligned_stack_if_any="aarch64 ppc x86"
1767 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1768 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1769 fast_unaligned_if_any="aarch64 ppc x86"
1770 simd_align_16_if_any="altivec neon sse"
1771
1772 # system capabilities
1773 symver_if_any="symver_asm_label symver_gnu_asm"
1774 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1775
1776 # threading support
1777 atomics_gcc_if="sync_val_compare_and_swap"
1778 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1779 atomics_win32_if="MemoryBarrier"
1780 atomics_native_if_any="$ATOMICS_LIST"
1781 w32threads_deps="atomics_native"
1782 threads_if_any="$THREADS_LIST"
1783
1784 # subsystems
1785 dct_select="rdft"
1786 error_resilience_select="me_cmp"
1787 faandct_deps="faan fdctdsp"
1788 faanidct_deps="faan idctdsp"
1789 intrax8_select="error_resilience"
1790 mdct_select="fft"
1791 rdft_select="fft"
1792 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1793 mpeg_er_select="error_resilience"
1794 mpegaudio_select="mpegaudiodsp"
1795 mpegaudiodsp_select="dct"
1796 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1797 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1798 nvenc_deps_any="dlopen LoadLibrary"
1799 nvenc_extralibs='$ldl'
1800 qsvdec_select="qsv"
1801 qsvenc_select="qsv"
1802
1803 # decoders / encoders
1804 aac_decoder_select="imdct15 mdct sinewin"
1805 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1806 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1807 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1808 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1809 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1810 aic_decoder_select="golomb idctdsp"
1811 alac_encoder_select="lpc"
1812 als_decoder_select="bswapdsp"
1813 amrnb_decoder_select="lsp"
1814 amrwb_decoder_select="lsp"
1815 amv_decoder_select="sp5x_decoder"
1816 ape_decoder_select="bswapdsp"
1817 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1818 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1819 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1820 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1821 atrac1_decoder_select="mdct sinewin"
1822 atrac3_decoder_select="mdct"
1823 atrac3p_decoder_select="mdct sinewin"
1824 bink_decoder_select="blockdsp hpeldsp"
1825 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1826 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1827 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1828 cllc_decoder_select="bswapdsp"
1829 comfortnoise_encoder_select="lpc"
1830 cook_decoder_select="audiodsp mdct sinewin"
1831 cscd_decoder_select="lzo"
1832 cscd_decoder_suggest="zlib"
1833 dca_decoder_select="fmtconvert mdct"
1834 dds_decoder_select="texturedsp"
1835 dnxhd_decoder_select="blockdsp idctdsp"
1836 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1837 dvvideo_decoder_select="dvprofile idctdsp"
1838 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1839 dxa_decoder_deps="zlib"
1840 eac3_decoder_select="ac3_decoder"
1841 eac3_encoder_select="ac3_encoder"
1842 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1843 eatgq_decoder_select="aandcttables idctdsp"
1844 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1845 exr_decoder_deps="zlib"
1846 ffv1_decoder_select="golomb rangecoder"
1847 ffv1_encoder_select="rangecoder"
1848 ffvhuff_decoder_select="huffyuv_decoder"
1849 ffvhuff_encoder_select="huffyuv_encoder"
1850 fic_decoder_select="golomb"
1851 flac_decoder_select="flacdsp golomb"
1852 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1853 flashsv_decoder_deps="zlib"
1854 flashsv_encoder_deps="zlib"
1855 flashsv2_decoder_deps="zlib"
1856 flv_decoder_select="h263_decoder"
1857 flv_encoder_select="h263_encoder"
1858 fourxm_decoder_select="blockdsp bswapdsp"
1859 fraps_decoder_select="bswapdsp huffman"
1860 g2m_decoder_deps="zlib"
1861 g2m_decoder_select="blockdsp idctdsp jpegtables"
1862 h261_decoder_select="mpeg_er mpegvideo"
1863 h261_encoder_select="aandcttables mpegvideoenc"
1864 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1865 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1866 h263i_decoder_select="h263_decoder"
1867 h263p_encoder_select="h263_encoder"
1868 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1869 h264_decoder_suggest="error_resilience"
1870 h264_nvenc_encoder_deps="nvenc"
1871 h264_qsv_decoder_deps="libmfx"
1872 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1873 h264_qsv_encoder_deps="libmfx"
1874 h264_qsv_encoder_select="qsvenc"
1875 hap_decoder_select="snappy texturedsp"
1876 hap_encoder_deps="libsnappy"
1877 hap_encoder_select="texturedspenc"
1878 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1879 hevc_nvenc_encoder_deps="nvenc"
1880 hevc_qsv_encoder_deps="libmfx"
1881 hevc_qsv_encoder_select="qsvenc"
1882 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1883 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1884 iac_decoder_select="imc_decoder"
1885 imc_decoder_select="bswapdsp fft mdct sinewin"
1886 indeo3_decoder_select="hpeldsp"
1887 indeo4_decoder_select="ividsp"
1888 indeo5_decoder_select="ividsp"
1889 interplay_video_decoder_select="hpeldsp"
1890 jpegls_decoder_select="golomb mjpeg_decoder"
1891 jpegls_encoder_select="golomb"
1892 jv_decoder_select="blockdsp"
1893 lagarith_decoder_select="huffyuvdsp"
1894 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1895 loco_decoder_select="golomb"
1896 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1897 metasound_decoder_select="lsp mdct sinewin"
1898 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1899 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1900 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1901 mjpegb_decoder_select="mjpeg_decoder"
1902 mlp_decoder_select="mlp_parser"
1903 motionpixels_decoder_select="bswapdsp"
1904 mp1_decoder_select="mpegaudio"
1905 mp1float_decoder_select="mpegaudio"
1906 mp2_decoder_select="mpegaudio"
1907 mp2float_decoder_select="mpegaudio"
1908 mp3_decoder_select="mpegaudio"
1909 mp3adu_decoder_select="mpegaudio"
1910 mp3adufloat_decoder_select="mpegaudio"
1911 mp3float_decoder_select="mpegaudio"
1912 mp3on4_decoder_select="mpegaudio"
1913 mp3on4float_decoder_select="mpegaudio"
1914 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1915 mpc8_decoder_select="mpegaudiodsp"
1916 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1917 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1918 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1919 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1920 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1921 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1922 mpeg2_qsv_encoder_deps="libmfx"
1923 mpeg2_qsv_encoder_select="qsvenc"
1924 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1925 mpeg4_encoder_select="h263_encoder"
1926 msa1_decoder_select="mss34dsp"
1927 msmpeg4v1_decoder_select="h263_decoder"
1928 msmpeg4v2_decoder_select="h263_decoder"
1929 msmpeg4v2_encoder_select="h263_encoder"
1930 msmpeg4v3_decoder_select="h263_decoder"
1931 msmpeg4v3_encoder_select="h263_encoder"
1932 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1933 mts2_decoder_select="mss34dsp"
1934 mxpeg_decoder_select="mjpeg_decoder"
1935 nellymoser_decoder_select="mdct sinewin"
1936 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1937 nuv_decoder_select="idctdsp lzo"
1938 on2avc_decoder_select="mdct"
1939 opus_decoder_deps="avresample"
1940 opus_decoder_select="imdct15"
1941 png_decoder_deps="zlib"
1942 png_encoder_deps="zlib"
1943 png_encoder_select="huffyuvencdsp"
1944 prores_decoder_select="idctdsp"
1945 prores_encoder_select="fdctdsp"
1946 qcelp_decoder_select="lsp"
1947 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1948 ra_144_encoder_select="audio_frame_queue lpc"
1949 ralf_decoder_select="golomb"
1950 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1951 rv10_encoder_select="h263_encoder"
1952 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1953 rv20_encoder_select="h263_encoder"
1954 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1955 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1956 shorten_decoder_select="golomb"
1957 sipr_decoder_select="lsp"
1958 sp5x_decoder_select="mjpeg_decoder"
1959 svq1_decoder_select="hpeldsp"
1960 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1961 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1962 svq3_decoder_suggest="zlib"
1963 tak_decoder_select="audiodsp"
1964 tdsc_decoder_deps="zlib"
1965 tdsc_decoder_select="mjpeg_decoder"
1966 theora_decoder_select="vp3_decoder"
1967 thp_decoder_select="mjpeg_decoder"
1968 tiff_decoder_suggest="zlib"
1969 tiff_encoder_suggest="zlib"
1970 truehd_decoder_select="mlp_decoder"
1971 truemotion2_decoder_select="bswapdsp"
1972 truespeech_decoder_select="bswapdsp"
1973 tscc_decoder_deps="zlib"
1974 txd_decoder_select="texturedsp"
1975 twinvq_decoder_select="mdct lsp sinewin"
1976 utvideo_decoder_select="bswapdsp"
1977 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1978 vble_decoder_select="huffyuvdsp"
1979 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1980 vc1image_decoder_select="vc1_decoder"
1981 vorbis_decoder_select="mdct"
1982 vorbis_encoder_select="mdct"
1983 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1984 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1985 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1986 vp6a_decoder_select="vp6_decoder"
1987 vp6f_decoder_select="vp6_decoder"
1988 vp7_decoder_select="h264pred videodsp vp8dsp"
1989 vp8_decoder_select="h264pred videodsp vp8dsp"
1990 vp9_decoder_select="videodsp"
1991 webp_decoder_select="vp8_decoder"
1992 wmapro_decoder_select="mdct sinewin wma_freqs"
1993 wmav1_decoder_select="mdct sinewin wma_freqs"
1994 wmav1_encoder_select="mdct sinewin wma_freqs"
1995 wmav2_decoder_select="mdct sinewin wma_freqs"
1996 wmav2_encoder_select="mdct sinewin wma_freqs"
1997 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1998 wmv1_decoder_select="h263_decoder"
1999 wmv1_encoder_select="h263_encoder"
2000 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2001 wmv2_encoder_select="h263_encoder wmv2dsp"
2002 wmv3_decoder_select="vc1_decoder"
2003 wmv3image_decoder_select="wmv3_decoder"
2004 zerocodec_decoder_deps="zlib"
2005 zlib_decoder_deps="zlib"
2006 zlib_encoder_deps="zlib"
2007 zmbv_decoder_deps="zlib"
2008 zmbv_encoder_deps="zlib"
2009
2010 # hardware accelerators
2011 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2012 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2013 vaapi_deps="va_va_h"
2014 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2015 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2016 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2017
2018 h263_vaapi_hwaccel_deps="vaapi"
2019 h263_vaapi_hwaccel_select="h263_decoder"
2020 h263_vdpau_hwaccel_deps="vdpau"
2021 h263_vdpau_hwaccel_select="h263_decoder"
2022 h264_d3d11va_hwaccel_deps="d3d11va"
2023 h264_d3d11va_hwaccel_select="h264_decoder"
2024 h264_dxva2_hwaccel_deps="dxva2"
2025 h264_dxva2_hwaccel_select="h264_decoder"
2026 h264_mmal_decoder_deps="mmal"
2027 h264_mmal_hwaccel_deps="mmal"
2028 h264_mmal_decoder_select="h264_decoder"
2029 h264_mmal_encoder_deps="mmal"
2030 h264_qsv_hwaccel_deps="libmfx"
2031 h264_vaapi_hwaccel_deps="vaapi"
2032 h264_vaapi_hwaccel_select="h264_decoder"
2033 h264_vda_hwaccel_deps="vda"
2034 h264_vda_hwaccel_select="h264_decoder"
2035 h264_vda_old_hwaccel_deps="vda"
2036 h264_vda_old_hwaccel_select="h264_decoder"
2037 h264_vdpau_hwaccel_deps="vdpau"
2038 h264_vdpau_hwaccel_select="h264_decoder"
2039 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2040 hevc_d3d11va_hwaccel_select="hevc_decoder"
2041 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2042 hevc_dxva2_hwaccel_select="hevc_decoder"
2043 mpeg1_vdpau_hwaccel_deps="vdpau"
2044 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2045 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2046 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2047 mpeg2_dxva2_hwaccel_deps="dxva2"
2048 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2049 mpeg2_vaapi_hwaccel_deps="vaapi"
2050 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2051 mpeg2_vdpau_hwaccel_deps="vdpau"
2052 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2053 mpeg4_vaapi_hwaccel_deps="vaapi"
2054 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2055 mpeg4_vdpau_hwaccel_deps="vdpau"
2056 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2057 vc1_d3d11va_hwaccel_deps="d3d11va"
2058 vc1_d3d11va_hwaccel_select="vc1_decoder"
2059 vc1_dxva2_hwaccel_deps="dxva2"
2060 vc1_dxva2_hwaccel_select="vc1_decoder"
2061 vc1_vaapi_hwaccel_deps="vaapi"
2062 vc1_vaapi_hwaccel_select="vc1_decoder"
2063 vc1_vdpau_hwaccel_deps="vdpau"
2064 vc1_vdpau_hwaccel_select="vc1_decoder"
2065 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2066 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2067 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2068 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2069
2070 # parsers
2071 h264_parser_select="h264_decoder"
2072 hevc_parser_select="golomb"
2073 mpegvideo_parser_select="mpegvideo"
2074 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2075 vc1_parser_select="mpegvideo startcode vc1_decoder"
2076
2077 # bitstream_filters
2078 mjpeg2jpeg_bsf_select="jpegtables"
2079
2080 # external libraries
2081 libdcadec_decoder_deps="libdcadec"
2082 libfaac_encoder_deps="libfaac"
2083 libfaac_encoder_select="audio_frame_queue"
2084 libfdk_aac_decoder_deps="libfdk_aac"
2085 libfdk_aac_encoder_deps="libfdk_aac"
2086 libfdk_aac_encoder_select="audio_frame_queue"
2087 libgsm_decoder_deps="libgsm"
2088 libgsm_encoder_deps="libgsm"
2089 libgsm_ms_decoder_deps="libgsm"
2090 libgsm_ms_encoder_deps="libgsm"
2091 libilbc_decoder_deps="libilbc"
2092 libilbc_encoder_deps="libilbc"
2093 libmp3lame_encoder_deps="libmp3lame"
2094 libmp3lame_encoder_select="audio_frame_queue"
2095 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2096 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2097 libopencore_amrnb_encoder_select="audio_frame_queue"
2098 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2099 libopenh264_encoder_deps="libopenh264"
2100 libopenjpeg_decoder_deps="libopenjpeg"
2101 libopenjpeg_encoder_deps="libopenjpeg"
2102 libopus_decoder_deps="libopus"
2103 libopus_encoder_deps="libopus"
2104 libopus_encoder_select="audio_frame_queue"
2105 libschroedinger_decoder_deps="libschroedinger"
2106 libschroedinger_encoder_deps="libschroedinger"
2107 libspeex_decoder_deps="libspeex"
2108 libspeex_encoder_deps="libspeex"
2109 libspeex_encoder_select="audio_frame_queue"
2110 libtheora_encoder_deps="libtheora"
2111 libtwolame_encoder_deps="libtwolame"
2112 libvo_aacenc_encoder_deps="libvo_aacenc"
2113 libvo_aacenc_encoder_select="audio_frame_queue"
2114 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2115 libvorbis_encoder_deps="libvorbis"
2116 libvorbis_encoder_select="audio_frame_queue"
2117 libvpx_vp8_decoder_deps="libvpx"
2118 libvpx_vp8_encoder_deps="libvpx"
2119 libvpx_vp9_decoder_deps="libvpx"
2120 libvpx_vp9_encoder_deps="libvpx"
2121 libwavpack_encoder_deps="libwavpack"
2122 libwebp_encoder_deps="libwebp"
2123 libx262_encoder_deps="libx262"
2124 libx264_encoder_deps="libx264"
2125 libx265_encoder_deps="libx265"
2126 libxavs_encoder_deps="libxavs"
2127 libxvid_encoder_deps="libxvid"
2128
2129 # demuxers / muxers
2130 ac3_demuxer_select="ac3_parser"
2131 asf_demuxer_select="riffdec"
2132 asf_muxer_select="riffenc"
2133 asf_stream_muxer_select="asf_muxer"
2134 avi_demuxer_select="riffdec"
2135 avi_muxer_select="riffenc"
2136 avisynth_demuxer_deps="avisynth"
2137 avisynth_demuxer_select="riffdec"
2138 caf_demuxer_select="riffdec"
2139 dash_muxer_select="mp4_muxer"
2140 dirac_demuxer_select="dirac_parser"
2141 dv_demuxer_select="dvprofile"
2142 dv_muxer_select="dvprofile"
2143 dxa_demuxer_select="riffdec"
2144 eac3_demuxer_select="ac3_parser"
2145 f4v_muxer_select="mov_muxer"
2146 flac_demuxer_select="flac_parser"
2147 hds_muxer_select="flv_muxer"
2148 hls_muxer_select="mpegts_muxer"
2149 ipod_muxer_select="mov_muxer"
2150 ismv_muxer_select="mov_muxer"
2151 matroska_audio_muxer_select="matroska_muxer"
2152 matroska_demuxer_select="riffdec"
2153 matroska_demuxer_suggest="bzlib lzo zlib"
2154 matroska_muxer_select="riffenc"
2155 mmf_muxer_select="riffenc"
2156 mov_demuxer_select="riffdec"
2157 mov_demuxer_suggest="zlib"
2158 mov_muxer_select="riffenc rtpenc_chain"
2159 mp3_demuxer_select="mpegaudio_parser"
2160 mp4_muxer_select="mov_muxer"
2161 mpegts_muxer_select="adts_muxer latm_muxer"
2162 mpegtsraw_demuxer_select="mpegts_demuxer"
2163 mxf_d10_muxer_select="mxf_muxer"
2164 nut_muxer_select="riffenc"
2165 nuv_demuxer_select="riffdec"
2166 oga_muxer_select="ogg_muxer"
2167 ogg_demuxer_select="golomb"
2168 opus_muxer_select="ogg_muxer"
2169 psp_muxer_select="mov_muxer"
2170 rtp_demuxer_select="sdp_demuxer"
2171 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2172 rtsp_demuxer_select="http_protocol rtpdec"
2173 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2174 sap_demuxer_select="sdp_demuxer"
2175 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2176 sdp_demuxer_select="rtpdec"
2177 smoothstreaming_muxer_select="ismv_muxer"
2178 spdif_muxer_select="aac_parser"
2179 spx_muxer_select="ogg_muxer"
2180 tak_demuxer_select="tak_parser"
2181 tg2_muxer_select="mov_muxer"
2182 tgp_muxer_select="mov_muxer"
2183 w64_demuxer_select="wav_demuxer"
2184 wav_demuxer_select="riffdec"
2185 wav_muxer_select="riffenc"
2186 webm_muxer_select="riffenc"
2187 wtv_demuxer_select="riffdec"
2188 xmv_demuxer_select="riffdec"
2189 xwma_demuxer_select="riffdec"
2190
2191 # indevs / outdevs
2192 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2193 alsa_outdev_deps="alsa_asoundlib_h"
2194 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2195 dv1394_indev_deps="dv1394"
2196 dv1394_indev_select="dv_demuxer"
2197 fbdev_indev_deps="linux_fb_h"
2198 jack_indev_deps="jack_jack_h pthreads"
2199 libcdio_indev_deps="libcdio"
2200 libdc1394_indev_deps="libdc1394"
2201 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2202 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2203 pulse_indev_deps="libpulse"
2204 sndio_indev_deps="sndio_h"
2205 sndio_outdev_deps="sndio_h"
2206 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2207 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2208 vfwcap_indev_extralibs="-lavicap32"
2209 x11grab_indev_deps="x11grab"
2210 x11grab_xcb_indev_deps="libxcb"
2211
2212 # protocols
2213 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2214 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2215 ffrtmpcrypt_protocol_select="tcp_protocol"
2216 ffrtmphttp_protocol_deps="!librtmp_protocol"
2217 ffrtmphttp_protocol_select="http_protocol"
2218 gopher_protocol_select="network"
2219 http_protocol_select="tcp_protocol"
2220 httpproxy_protocol_select="tcp_protocol"
2221 https_protocol_select="tls_protocol"
2222 icecast_protocol_select="http_protocol"
2223 librtmp_protocol_deps="librtmp"
2224 librtmpe_protocol_deps="librtmp"
2225 librtmps_protocol_deps="librtmp"
2226 librtmpt_protocol_deps="librtmp"
2227 librtmpte_protocol_deps="librtmp"
2228 mmsh_protocol_select="http_protocol"
2229 mmst_protocol_select="network"
2230 rtmp_protocol_deps="!librtmp_protocol"
2231 rtmp_protocol_select="tcp_protocol"
2232 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2233 rtmps_protocol_deps="!librtmp_protocol"
2234 rtmps_protocol_select="tls_protocol"
2235 rtmpt_protocol_select="ffrtmphttp_protocol"
2236 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2237 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2238 rtp_protocol_select="udp_protocol"
2239 sctp_protocol_deps="struct_sctp_event_subscribe"
2240 sctp_protocol_select="network"
2241 srtp_protocol_select="rtp_protocol"
2242 tcp_protocol_select="network"
2243 tls_gnutls_protocol_deps="gnutls"
2244 tls_gnutls_protocol_select="tcp_protocol"
2245 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2246 tls_openssl_protocol_select="tcp_protocol"
2247 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2248 udp_protocol_select="network"
2249 unix_protocol_deps="sys_un_h"
2250 unix_protocol_select="network"
2251
2252 # filters
2253 blackframe_filter_deps="gpl"
2254 boxblur_filter_deps="gpl"
2255 bs2b_filter_deps="libbs2b"
2256 cropdetect_filter_deps="gpl"
2257 delogo_filter_deps="gpl"
2258 drawtext_filter_deps="libfreetype"
2259 frei0r_filter_deps="frei0r dlopen"
2260 frei0r_filter_extralibs='$ldl'
2261 frei0r_src_filter_deps="frei0r dlopen"
2262 frei0r_src_filter_extralibs='$ldl'
2263 hqdn3d_filter_deps="gpl"
2264 interlace_filter_deps="gpl"
2265 ocv_filter_deps="libopencv"
2266 resample_filter_deps="avresample"
2267 scale_filter_deps="swscale"
2268
2269 # examples
2270 avcodec_example_deps="avcodec avutil"
2271 filter_audio_example_deps="avfilter avutil"
2272 metadata_example_deps="avformat avutil"
2273 output_example_deps="avcodec avformat avutil swscale"
2274 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2275 transcode_aac_example_deps="avcodec avformat avresample"
2276
2277 # libraries, in linking order
2278 avcodec_deps="avutil"
2279 avdevice_deps="avformat avcodec avutil"
2280 avfilter_deps="avutil"
2281 avformat_deps="avcodec avutil"
2282 avresample_deps="avutil"
2283 swscale_deps="avutil"
2284
2285 # programs
2286 avconv_deps="avcodec avfilter avformat avresample swscale"
2287 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2288                fps_filter null_filter resample_filter scale_filter
2289                setpts_filter trim_filter"
2290 avplay_deps="avcodec avformat avresample swscale sdl"
2291 avplay_libs='$sdl_libs'
2292 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2293 avprobe_deps="avcodec avformat"
2294
2295 # documentation
2296 pod2man_deps="doc"
2297 texi2html_deps="doc"
2298
2299 # default parameters
2300
2301 logfile="config.log"
2302
2303 # installation paths
2304 prefix_default="/usr/local"
2305 bindir_default='${prefix}/bin'
2306 datadir_default='${prefix}/share/avconv'
2307 docdir_default='${prefix}/share/doc/libav'
2308 incdir_default='${prefix}/include'
2309 libdir_default='${prefix}/lib'
2310 mandir_default='${prefix}/share/man'
2311 shlibdir_default="$libdir_default"
2312
2313 # toolchain
2314 ar_default="ar"
2315 cc_default="gcc"
2316 host_cc_default="gcc"
2317 cp_f="cp -f"
2318 ln_s="ln -s -f"
2319 nm_default="nm -g"
2320 objformat="elf"
2321 pkg_config_default=pkg-config
2322 ranlib="ranlib"
2323 strip="strip"
2324 yasmexe="yasm"
2325
2326 # machine
2327 arch_default=$(uname -m)
2328 cpu="generic"
2329 intrinsics="none"
2330
2331 # OS
2332 target_os_default=$(tolower $(uname -s))
2333 host_os=$target_os_default
2334
2335 # configurable options
2336 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2337
2338 enable asm
2339 enable debug
2340 enable doc
2341 enable faan faandct faanidct
2342 enable optimizations
2343 enable safe_bitstream_reader
2344 enable static
2345 enable swscale_alpha
2346 enable valgrind_backtrace
2347
2348 # By default, enable only those hwaccels that have no external dependencies.
2349 enable d3d11va dxva2 vda vdpau
2350
2351 # build settings
2352 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2353 LIBPREF="lib"
2354 LIBSUF=".a"
2355 FULLNAME='$(NAME)$(BUILDSUF)'
2356 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2357 SLIBPREF="lib"
2358 SLIBSUF=".so"
2359 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2360 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2361 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2362 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2363 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2364 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2365
2366 asflags_filter=echo
2367 cflags_filter=echo
2368 ldflags_filter=echo
2369
2370 AS_C='-c'
2371 AS_O='-o $@'
2372 CC_C='-c'
2373 CC_E='-E -o $@'
2374 CC_O='-o $@'
2375 LD_O='-o $@'
2376 LD_LIB='-l%'
2377 LD_PATH='-L'
2378 HOSTCC_C='-c'
2379 HOSTCC_E='-E -o $@'
2380 HOSTCC_O='-o $@'
2381 HOSTLD_O='-o $@'
2382
2383 host_libs='-lm'
2384 host_cflags_filter=echo
2385 host_ldflags_filter=echo
2386
2387 target_path='$(CURDIR)'
2388
2389 # since the object filename is not given with the -MM flag, the compiler
2390 # is only able to print the basename, and we must add the path ourselves
2391 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2392 DEPFLAGS='-MM'
2393
2394 # find source path
2395 if test -f configure; then
2396     source_path=.
2397 else
2398     source_path=$(cd $(dirname "$0"); pwd)
2399     echo "$source_path" | grep -q '[[:blank:]]' &&
2400         die "Out of tree builds are impossible with whitespace in source path."
2401     test -e "$source_path/config.h" &&
2402         die "Out of tree builds are impossible with config.h in source dir."
2403 fi
2404
2405 for v in "$@"; do
2406     r=${v#*=}
2407     l=${v%"$r"}
2408     r=$(sh_quote "$r")
2409     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2410 done
2411
2412 find_things(){
2413     thing=$1
2414     pattern=$2
2415     file=$source_path/$3
2416     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2417 }
2418
2419 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2420 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2421 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2422 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2423 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2424 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2425 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2426 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2427 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2428 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2429 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2430
2431 ALL_COMPONENTS="
2432     $BSF_LIST
2433     $DECODER_LIST
2434     $DEMUXER_LIST
2435     $ENCODER_LIST
2436     $FILTER_LIST
2437     $HWACCEL_LIST
2438     $INDEV_LIST
2439     $MUXER_LIST
2440     $OUTDEV_LIST
2441     $PARSER_LIST
2442     $PROTOCOL_LIST
2443 "
2444
2445 for n in $COMPONENT_LIST; do
2446     v=$(toupper ${n%s})_LIST
2447     eval enable \$$v
2448     eval ${n}_if_any="\$$v"
2449 done
2450
2451 enable $ARCH_EXT_LIST
2452
2453 die_unknown(){
2454     echo "Unknown option \"$1\"."
2455     echo "See $0 --help for available options."
2456     exit 1
2457 }
2458
2459 print_3_columns() {
2460     cat | tr ' ' '\n' | sort | pr -r -3 -t
2461 }
2462
2463 show_list() {
2464     suffix=_$1
2465     shift
2466     echo $* | sed s/$suffix//g | print_3_columns
2467     exit 0
2468 }
2469
2470 rand_list(){
2471     IFS=', '
2472     set -- $*
2473     unset IFS
2474     for thing; do
2475         comp=${thing%:*}
2476         prob=${thing#$comp}
2477         prob=${prob#:}
2478         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2479         echo "prob ${prob:-0.5}"
2480         printf '%s\n' $comp
2481     done
2482 }
2483
2484 do_random(){
2485     action=$1
2486     shift
2487     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2488     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2489 }
2490
2491 for opt do
2492     optval="${opt#*=}"
2493     case "$opt" in
2494         --extra-ldflags=*)
2495             add_ldflags $optval
2496         ;;
2497         --extra-ldexeflags=*)
2498             add_ldexeflags $optval
2499         ;;
2500         --extra-libs=*)
2501             add_extralibs $optval
2502         ;;
2503         --disable-devices)
2504             disable $INDEV_LIST $OUTDEV_LIST
2505         ;;
2506         --enable-debug=*)
2507             debuglevel="$optval"
2508         ;;
2509         --disable-programs)
2510             disable $PROGRAM_LIST
2511         ;;
2512         --disable-everything)
2513             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2514         ;;
2515         --disable-all)
2516             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2517             disable $LIBRARY_LIST $PROGRAM_LIST doc
2518         ;;
2519         --enable-random|--disable-random)
2520             action=${opt%%-random}
2521             do_random ${action#--} $COMPONENT_LIST
2522         ;;
2523         --enable-random=*|--disable-random=*)
2524             action=${opt%%-random=*}
2525             do_random ${action#--} $optval
2526         ;;
2527         --enable-*=*|--disable-*=*)
2528             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2529             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2530             eval list=\$$(toupper $thing)_LIST
2531             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2532             $action $(filter "$name" $list)
2533         ;;
2534         --enable-avserver|--disable-avserver*)
2535             warn "avserver has been removed, the ${opt} option is only"\
2536                  "provided for compatibility and will be removed in the future"
2537         ;;
2538         --enable-?*|--disable-?*)
2539             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2540             if is_in $option $COMPONENT_LIST; then
2541                 test $action = disable && action=unset
2542                 eval $action \$$(toupper ${option%s})_LIST
2543             elif is_in $option $CMDLINE_SELECT; then
2544                 $action $option
2545             else
2546                 die_unknown $opt
2547             fi
2548         ;;
2549         --list-*)
2550             NAME="${opt#--list-}"
2551             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2552             NAME=${NAME%s}
2553             eval show_list $NAME \$$(toupper $NAME)_LIST
2554         ;;
2555         --help|-h) show_help
2556         ;;
2557         *)
2558             optname="${opt%%=*}"
2559             optname="${optname#--}"
2560             optname=$(echo "$optname" | sed 's/-/_/g')
2561             if is_in $optname $CMDLINE_SET; then
2562                 eval $optname='$optval'
2563             elif is_in $optname $CMDLINE_APPEND; then
2564                 append $optname "$optval"
2565             else
2566                 die_unknown $opt
2567             fi
2568         ;;
2569     esac
2570 done
2571
2572 for e in $env; do
2573     eval "export $e"
2574 done
2575
2576 disabled logging && logfile=/dev/null
2577
2578 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2579 set >> $logfile
2580
2581 case "$toolchain" in
2582     clang-asan)
2583         cc_default="clang"
2584         add_cflags  -fsanitize=address
2585         add_ldflags -fsanitize=address
2586     ;;
2587     clang-tsan)
2588         cc_default="clang"
2589         add_cflags  -fsanitize=thread -pie
2590         add_ldflags -fsanitize=thread -pie
2591     ;;
2592     clang-usan)
2593         cc_default="clang"
2594         add_cflags  -fsanitize=undefined -O1
2595         add_ldflags -fsanitize=undefined
2596     ;;
2597     gcc-asan)
2598         cc_default="gcc"
2599         add_cflags  -fsanitize=address
2600         add_ldflags -fsanitize=address
2601     ;;
2602     gcc-tsan)
2603         cc_default="gcc"
2604         add_cflags  -fsanitize=thread -pie -fPIC
2605         add_ldflags -fsanitize=thread -pie -fPIC
2606     ;;
2607     gcc-usan)
2608         cc_default="gcc"
2609         add_cflags  -fsanitize=undefined
2610         add_ldflags -fsanitize=undefined
2611     ;;
2612     valgrind-massif)
2613         target_exec_default="valgrind"
2614         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2615     ;;
2616     valgrind-memcheck)
2617         target_exec_default="valgrind"
2618         target_exec_args="--track-origins=yes --leak-check=full"
2619     ;;
2620     msvc)
2621         # Check whether the current MSVC version needs the C99 converter.
2622         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2623         # support enough of C99 to build libav. Default to the new
2624         # behaviour if the regexp was unable to match anything, since this
2625         # successfully parses the version number of existing supported
2626         # versions that require the converter (MSVC 2010 and 2012).
2627         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2628         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2629             cc_default="cl"
2630         else
2631             cc_default="c99wrap cl"
2632         fi
2633         ld_default="link"
2634         nm_default="dumpbin -symbols"
2635         ar_default="lib"
2636         target_os_default="win32"
2637         # Use a relative path for TMPDIR. This makes sure all the
2638         # ffconf temp files are written with a relative path, avoiding
2639         # issues with msys/win32 path conversion for MSVC parameters
2640         # such as -Fo<file> or -out:<file>.
2641         TMPDIR=.
2642     ;;
2643     icl)
2644         cc_default="icl"
2645         ld_default="xilink"
2646         nm_default="dumpbin -symbols"
2647         ar_default="xilib"
2648         target_os_default="win32"
2649         TMPDIR=.
2650     ;;
2651     gcov)
2652         add_cflags  -fprofile-arcs -ftest-coverage
2653         add_ldflags -fprofile-arcs -ftest-coverage
2654     ;;
2655     hardened)
2656         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2657         add_cflags   -fno-strict-overflow -fstack-protector-all
2658         add_ldflags  -Wl,-z,relro -Wl,-z,now
2659     ;;
2660     ?*)
2661         die "Unknown toolchain $toolchain"
2662     ;;
2663 esac
2664
2665 test -n "$cross_prefix" && enable cross_compile
2666
2667 if enabled cross_compile; then
2668     test -n "$arch" && test -n "$target_os" ||
2669         die "Must specify target arch and OS when cross-compiling"
2670 fi
2671
2672 ar_default="${cross_prefix}${ar_default}"
2673 cc_default="${cross_prefix}${cc_default}"
2674 nm_default="${cross_prefix}${nm_default}"
2675 pkg_config_default="${cross_prefix}${pkg_config_default}"
2676 ranlib="${cross_prefix}${ranlib}"
2677 strip="${cross_prefix}${strip}"
2678
2679 sysinclude_default="${sysroot}/usr/include"
2680
2681 set_default arch cc pkg_config sysinclude target_exec target_os
2682 enabled cross_compile || host_cc_default=$cc
2683 set_default host_cc
2684
2685 if ! $pkg_config --version >/dev/null 2>&1; then
2686     warn "$pkg_config not found, library detection may fail."
2687     pkg_config=false
2688 fi
2689
2690 exesuf() {
2691     case $1 in
2692         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2693     esac
2694 }
2695
2696 EXESUF=$(exesuf $target_os)
2697 HOSTEXESUF=$(exesuf $host_os)
2698
2699 # set temporary file name
2700 : ${TMPDIR:=$TEMPDIR}
2701 : ${TMPDIR:=$TMP}
2702 : ${TMPDIR:=/tmp}
2703
2704 if ! check_cmd mktemp -u XXXXXX; then
2705     # simple replacement for missing mktemp
2706     # NOT SAFE FOR GENERAL USE
2707     mktemp(){
2708         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2709     }
2710 fi
2711
2712 tmpfile(){
2713     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2714         (set -C; exec > $tmp) 2>/dev/null ||
2715         die "Unable to create temporary file in $TMPDIR."
2716     append TMPFILES $tmp
2717     eval $1=$tmp
2718 }
2719
2720 trap 'rm -f -- $TMPFILES' EXIT
2721
2722 tmpfile TMPASM .asm
2723 tmpfile TMPC   .c
2724 tmpfile TMPE   $EXESUF
2725 tmpfile TMPH   .h
2726 tmpfile TMPO   .o
2727 tmpfile TMPS   .S
2728 tmpfile TMPSH  .sh
2729 tmpfile TMPV   .ver
2730
2731 unset -f mktemp
2732
2733 chmod +x $TMPE
2734
2735 # make sure we can execute files in $TMPDIR
2736 cat > $TMPSH 2>> $logfile <<EOF
2737 #! /bin/sh
2738 EOF
2739 chmod +x $TMPSH >> $logfile 2>&1
2740 if ! $TMPSH >> $logfile 2>&1; then
2741     cat <<EOF
2742 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2743 variable to another directory and make sure that it is not mounted noexec.
2744 EOF
2745     die "Sanity test failed."
2746 fi
2747
2748 armasm_flags(){
2749     for flag; do
2750         case $flag in
2751             # Filter out MSVC cl.exe options from cflags that shouldn't
2752             # be passed to gas-preprocessor
2753             -M[TD]*)                                            ;;
2754             *)                  echo $flag                      ;;
2755         esac
2756    done
2757 }
2758
2759 ccc_flags(){
2760     for flag; do
2761         case $flag in
2762             -std=c99)           echo -c99                       ;;
2763             -mcpu=*)            echo -arch ${flag#*=}           ;;
2764             -mieee)             echo -ieee                      ;;
2765             -O*|-fast)          echo $flag                      ;;
2766             -fno-math-errno)    echo -assume nomath_errno       ;;
2767             -g)                 echo -g3                        ;;
2768             -Wall)              echo -msg_enable level2         ;;
2769             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2770             -Wl,*)              echo $flag                      ;;
2771             -f*|-W*)                                            ;;
2772             *)                  echo $flag                      ;;
2773         esac
2774    done
2775 }
2776
2777 cparser_flags(){
2778     for flag; do
2779         case $flag in
2780             -Wno-switch)             echo -Wno-switch-enum ;;
2781             -Wno-format-zero-length) ;;
2782             -Wdisabled-optimization) ;;
2783             -Wno-pointer-sign)       echo -Wno-other ;;
2784             *)                       echo $flag ;;
2785         esac
2786     done
2787 }
2788
2789 msvc_common_flags(){
2790     for flag; do
2791         case $flag in
2792             # In addition to specifying certain flags under the compiler
2793             # specific filters, they must be specified here as well or else the
2794             # generic catch all at the bottom will print the original flag.
2795             -Wall)                ;;
2796             -std=c99)             ;;
2797             # Common flags
2798             -fomit-frame-pointer) ;;
2799             -g)                   echo -Z7 ;;
2800             -fno-math-errno)      ;;
2801             -fno-common)          ;;
2802             -fno-signed-zeros)    ;;
2803             -fPIC)                ;;
2804             -mthumb)              ;;
2805             -march=*)             ;;
2806             -lz)                  echo zlib.lib ;;
2807             -lavifil32)           echo vfw32.lib ;;
2808             -lavicap32)           echo vfw32.lib user32.lib ;;
2809             -l*)                  echo ${flag#-l}.lib ;;
2810             -L*)                  echo -libpath:${flag#-L} ;;
2811             *)                    echo $flag ;;
2812         esac
2813     done
2814 }
2815
2816 msvc_flags(){
2817     msvc_common_flags "$@"
2818     for flag; do
2819         case $flag in
2820             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2821                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2822                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2823                                        -wd4273 -wd4554 -wd4701 ;;
2824         esac
2825     done
2826 }
2827
2828 icl_flags(){
2829     msvc_common_flags "$@"
2830     for flag; do
2831         case $flag in
2832             # Despite what Intel's documentation says -Wall, which is supported
2833             # on Windows, does enable remarks so disable them here.
2834             -Wall)                echo $flag -Qdiag-disable:remark ;;
2835             -std=c99)             echo -Qstd=c99 ;;
2836         esac
2837     done
2838 }
2839
2840 pgi_flags(){
2841     for flag; do
2842         case $flag in
2843             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2844             -fomit-frame-pointer) echo -Mnoframe ;;
2845             -g)                   echo -gopt ;;
2846             *)                    echo $flag ;;
2847         esac
2848     done
2849 }
2850
2851 suncc_flags(){
2852     for flag; do
2853         case $flag in
2854             -march=*|-mcpu=*)
2855                 case "${flag#*=}" in
2856                     native)                   echo -xtarget=native       ;;
2857                     v9|niagara)               echo -xarch=sparc          ;;
2858                     ultrasparc)               echo -xarch=sparcvis       ;;
2859                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2860                     i586|pentium)             echo -xchip=pentium        ;;
2861                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2862                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2863                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2864                     pentium4*)          echo -xtarget=pentium4           ;;
2865                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2866                     *-sse3)             echo -xarch=sse3                 ;;
2867                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2868                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2869                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2870                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2871                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2872                     k8|opteron|athlon64|athlon-fx)
2873                                                echo -xarch=sse2a         ;;
2874                     athlon*)                   echo -xarch=pentium_proa  ;;
2875                 esac
2876                 ;;
2877             -std=c99)             echo -xc99              ;;
2878             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2879             -fPIC)                echo -KPIC -xcode=pic32 ;;
2880             -W*,*)                echo $flag              ;;
2881             -f*-*|-W*|-mimpure-text)                      ;;
2882             -shared)              echo -G                 ;;
2883             *)                    echo $flag              ;;
2884         esac
2885     done
2886 }
2887
2888 tms470_flags(){
2889     for flag; do
2890         case $flag in
2891             -march=*|-mcpu=*)
2892                 case "${flag#*=}" in
2893                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2894                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2895                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2896                     armv6*|arm11*)          echo -mv=6   ;;
2897                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2898                                             echo -mv=5e  ;;
2899                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2900                 esac
2901                 ;;
2902             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2903             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2904             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2905             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2906             -msoft-float)   echo --float_support=vfplib       ;;
2907             -O[0-3]|-mf=*)  echo $flag                        ;;
2908             -g)             echo -g -mn                       ;;
2909             -pds=*)         echo $flag                        ;;
2910             -D*|-I*)        echo $flag                        ;;
2911             --gcc|--abi=*)  echo $flag                        ;;
2912             -me)            echo $flag                        ;;
2913         esac
2914     done
2915 }
2916
2917 probe_cc(){
2918     pfx=$1
2919     _cc=$2
2920
2921     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2922     unset _ld_o _ldflags _ld_lib _ld_path
2923     unset _depflags _DEPCMD _DEPFLAGS
2924     _flags_filter=echo
2925
2926     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2927         _type=llvm_gcc
2928         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2929         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2930         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2931         _cflags_speed='-O3'
2932         _cflags_size='-Os'
2933     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2934         _type=gcc
2935         gcc_version=$($_cc --version | head -n1)
2936         gcc_basever=$($_cc -dumpversion)
2937         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2938         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2939         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2940         if ! $_cc -dumpversion | grep -q '^2\.'; then
2941             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2942         fi
2943         _cflags_speed='-O3'
2944         _cflags_size='-Os'
2945     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2946         _type=icc
2947         _ident=$($_cc --version | head -n1)
2948         _depflags='-MMD'
2949         _cflags_speed='-O3'
2950         _cflags_size='-Os'
2951         _cflags_noopt='-O1'
2952     elif $_cc -v 2>&1 | grep -q xlc; then
2953         _type=xlc
2954         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2955         _cflags_speed='-O5'
2956         _cflags_size='-O5 -qcompact'
2957     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2958         _type=ccc
2959         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2960         _DEPFLAGS='-M'
2961         _cflags_speed='-fast'
2962         _cflags_size='-O1'
2963         _flags_filter=ccc_flags
2964     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2965         test -d "$sysroot" || die "No valid sysroot specified."
2966         _type=armcc
2967         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2968         armcc_conf="$PWD/armcc.conf"
2969         $_cc --arm_linux_configure                 \
2970              --arm_linux_config_file="$armcc_conf" \
2971              --configure_sysroot="$sysroot"        \
2972              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2973              die "Error creating armcc configuration file."
2974         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2975         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2976         as_default="${cross_prefix}gcc"
2977         _depflags='-MMD'
2978         _cflags_speed='-O3'
2979         _cflags_size='-Os'
2980     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2981         _type=tms470
2982         _ident=$($_cc -version | head -n1 | tr -s ' ')
2983         _flags='--gcc --abi=eabi -me'
2984         _cc_e='-ppl -fe=$@'
2985         _cc_o='-fe=$@'
2986         _depflags='-ppa -ppd=$(@:.o=.d)'
2987         _cflags_speed='-O3 -mf=5'
2988         _cflags_size='-O3 -mf=2'
2989         _flags_filter=tms470_flags
2990     elif $_cc -v 2>&1 | grep -q clang; then
2991         _type=clang
2992         _ident=$($_cc --version | head -n1)
2993         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2994         _cflags_speed='-O3'
2995         _cflags_size='-Os'
2996     elif $_cc -V 2>&1 | grep -q Sun; then
2997         _type=suncc
2998         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2999         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3000         _DEPFLAGS='-xM1 -xc99'
3001         _ldflags='-std=c99'
3002         _cflags_speed='-O5'
3003         _cflags_size='-O5 -xspace'
3004         _flags_filter=suncc_flags
3005     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3006         _type=pathscale
3007         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3008         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3009         _cflags_speed='-O2'
3010         _cflags_size='-Os'
3011         _flags_filter='filter_out -Wdisabled-optimization'
3012     elif $_cc -v 2>&1 | grep -q Open64; then
3013         _type=open64
3014         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3015         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3016         _cflags_speed='-O2'
3017         _cflags_size='-Os'
3018         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3019     elif $_cc -V 2>&1 | grep -q Portland; then
3020         _type=pgi
3021         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3022         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3023         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3024         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3025         _cflags_noopt="-O1"
3026         _flags_filter=pgi_flags
3027     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3028         _type=armasm
3029         _ident=$($_cc | head -n1)
3030         # 4509: "This form of conditional instruction is deprecated"
3031         _flags="-nologo -ignore 4509"
3032         _flags_filter=armasm_flags
3033     elif $_cc 2>&1 | grep -q Microsoft; then
3034         _type=msvc
3035         _ident=$($_cc 2>&1 | head -n1)
3036         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3037         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3038         _cflags_speed="-O2"
3039         _cflags_size="-O1"
3040         if $_cc 2>&1 | grep -q Linker; then
3041             _ld_o='-out:$@'
3042         else
3043             _ld_o='-Fe$@'
3044         fi
3045         _cc_o='-Fo$@'
3046         _cc_e='-P -Fi$@'
3047         _flags_filter=msvc_flags
3048         _ld_lib='lib%.a'
3049         _ld_path='-libpath:'
3050         _flags='-nologo'
3051         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3052     elif $_cc 2>&1 | grep -q Intel; then
3053         _type=icl
3054         _ident=$($_cc 2>&1 | head -n1)
3055         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3056         # Not only is O3 broken on 13.x+ but it is slower on all previous
3057         # versions (tested) as well.
3058         _cflags_speed="-O2"
3059         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3060         if $_cc 2>&1 | grep -q Linker; then
3061             _ld_o='-out:$@'
3062         else
3063             _ld_o='-Fe$@'
3064         fi
3065         _cc_o='-Fo$@'
3066         _cc_e='-P'
3067         _flags_filter=icl_flags
3068         _ld_lib='lib%.a'
3069         _ld_path='-libpath:'
3070         # -Qdiag-error to make icl error when seeing certain unknown arguments
3071         _flags='-nologo -Qdiag-error:4044,10157'
3072         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3073         # with MSVC which enables it by default.
3074         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3075     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3076         _type=cparser
3077         _ident=$($_cc --version | head -n1)
3078         _depflags='-MMD'
3079         _cflags_speed='-O4'
3080         _cflags_size='-O2'
3081         _flags_filter=cparser_flags
3082     fi
3083
3084     eval ${pfx}_type=\$_type
3085     eval ${pfx}_ident=\$_ident
3086 }
3087
3088 set_ccvars(){
3089     eval ${1}_C=\${_cc_c-\${${1}_C}}
3090     eval ${1}_E=\${_cc_e-\${${1}_E}}
3091     eval ${1}_O=\${_cc_o-\${${1}_O}}
3092
3093     if [ -n "$_depflags" ]; then
3094         eval ${1}_DEPFLAGS=\$_depflags
3095     else
3096         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3097         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3098         eval DEP${1}FLAGS=\$_flags
3099     fi
3100 }
3101
3102 probe_cc cc "$cc"
3103 cflags_filter=$_flags_filter
3104 cflags_speed=$_cflags_speed
3105 cflags_size=$_cflags_size
3106 cflags_noopt=$_cflags_noopt
3107 add_cflags $_flags $_cflags
3108 cc_ldflags=$_ldflags
3109 set_ccvars CC
3110
3111 probe_cc hostcc "$host_cc"
3112 host_cflags_filter=$_flags_filter
3113 add_host_cflags  $_flags $_cflags
3114 set_ccvars HOSTCC
3115
3116 test -n "$cc_type" && enable $cc_type ||
3117     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3118
3119 : ${as_default:=$cc}
3120 : ${dep_cc_default:=$cc}
3121 : ${ld_default:=$cc}
3122 : ${host_ld_default:=$host_cc}
3123 set_default ar as dep_cc ld host_ld
3124
3125 probe_cc as "$as"
3126 asflags_filter=$_flags_filter
3127 add_asflags $_flags $_cflags
3128 set_ccvars AS
3129
3130 probe_cc ld "$ld"
3131 ldflags_filter=$_flags_filter
3132 add_ldflags $_flags $_ldflags
3133 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3134 LD_O=${_ld_o-$LD_O}
3135 LD_LIB=${_ld_lib-$LD_LIB}
3136 LD_PATH=${_ld_path-$LD_PATH}
3137
3138 probe_cc hostld "$host_ld"
3139 host_ldflags_filter=$_flags_filter
3140 add_host_ldflags $_flags $_ldflags
3141 HOSTLD_O=${_ld_o-$HOSTLD_O}
3142
3143 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3144     probe_cc depcc "$dep_cc"
3145     CCDEP=${_DEPCMD:-$DEPCMD}
3146     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3147     DEPCCFLAGS=$_flags
3148 fi
3149
3150 if $ar 2>&1 | grep -q Microsoft; then
3151     arflags="-nologo"
3152     ar_o='-out:$@'
3153 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3154     arflags="rq"
3155     ar_o='$@'
3156 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3157     arflags='-Xany -r -c'
3158     ar_o='$@'
3159 else
3160     arflags="rc"
3161     ar_o='$@'
3162 fi
3163
3164 add_cflags $extra_cflags
3165 add_asflags $extra_cflags
3166
3167 if test -n "$sysroot"; then
3168     case "$cc_type" in
3169         gcc|llvm_gcc|clang)
3170             add_cppflags --sysroot="$sysroot"
3171             add_ldflags --sysroot="$sysroot"
3172         ;;
3173         tms470)
3174             add_cppflags -I"$sysinclude"
3175             add_ldflags  --sysroot="$sysroot"
3176         ;;
3177     esac
3178 fi
3179
3180 if test "$cpu" = host; then
3181     enabled cross_compile &&
3182         die "--cpu=host makes no sense when cross-compiling."
3183
3184     case "$cc_type" in
3185         gcc|llvm_gcc)
3186             check_native(){
3187                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3188                 sed -n "/cc1.*$1=/{
3189                             s/.*$1=\\([^ ]*\\).*/\\1/
3190                             p
3191                             q
3192                         }" $TMPE
3193             }
3194             cpu=$(check_native -march || check_native -mcpu)
3195         ;;
3196     esac
3197
3198     test "${cpu:-host}" = host &&
3199         die "--cpu=host not supported with compiler $cc"
3200 fi
3201
3202 # Deal with common $arch aliases
3203 case "$arch" in
3204     aarch64|arm64)
3205         arch="aarch64"
3206     ;;
3207     arm*)
3208         arch="arm"
3209     ;;
3210     mips*|IP*)
3211         arch="mips"
3212     ;;
3213     parisc*|hppa*)
3214         arch="parisc"
3215     ;;
3216     "Power Macintosh"|ppc*|powerpc*)
3217         arch="ppc"
3218     ;;
3219     s390|s390x)
3220         arch="s390"
3221     ;;
3222     sh4|sh)
3223         arch="sh4"
3224     ;;
3225     sun4u|sparc*)
3226         arch="sparc"
3227     ;;
3228     tilegx|tile-gx)
3229         arch="tilegx"
3230     ;;
3231     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3232         arch="x86"
3233     ;;
3234 esac
3235
3236 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3237 enable $arch
3238
3239 # Add processor-specific flags
3240 if enabled aarch64; then
3241
3242     case $cpu in
3243         armv*)
3244             cpuflags="-march=$cpu"
3245         ;;
3246         *)
3247             cpuflags="-mcpu=$cpu"
3248         ;;
3249     esac
3250
3251 elif enabled alpha; then
3252
3253     cpuflags="-mcpu=$cpu"
3254
3255 elif enabled arm; then
3256
3257     check_arm_arch() {
3258         check_cpp_condition stddef.h \
3259             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3260             $cpuflags
3261     }
3262
3263     probe_arm_arch() {
3264         if   check_arm_arch 4;        then echo armv4;
3265         elif check_arm_arch 4T;       then echo armv4t;
3266         elif check_arm_arch 5;        then echo armv5;
3267         elif check_arm_arch 5E;       then echo armv5e;
3268         elif check_arm_arch 5T;       then echo armv5t;
3269         elif check_arm_arch 5TE;      then echo armv5te;
3270         elif check_arm_arch 5TEJ;     then echo armv5te;
3271         elif check_arm_arch 6;        then echo armv6;
3272         elif check_arm_arch 6J;       then echo armv6j;
3273         elif check_arm_arch 6K;       then echo armv6k;
3274         elif check_arm_arch 6Z;       then echo armv6z;
3275         elif check_arm_arch 6ZK;      then echo armv6zk;
3276         elif check_arm_arch 6T2;      then echo armv6t2;
3277         elif check_arm_arch 7;        then echo armv7;
3278         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3279         elif check_arm_arch 7S;       then echo armv7-a;
3280         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3281         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3282         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3283         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3284         fi
3285     }
3286
3287     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3288
3289     case $cpu in
3290         armv*)
3291             cpuflags="-march=$cpu"
3292             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3293         ;;
3294         *)
3295             cpuflags="-mcpu=$cpu"
3296             case $cpu in
3297                 cortex-a*)                               subarch=armv7a  ;;
3298                 cortex-r*)                               subarch=armv7r  ;;
3299                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3300                 arm11*)                                  subarch=armv6   ;;
3301                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3302                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3303                 *)                             subarch=$(probe_arm_arch) ;;
3304             esac
3305         ;;
3306     esac
3307
3308     case "$subarch" in
3309         armv5t*)    enable fast_clz                ;;
3310         armv[6-8]*) enable fast_clz fast_unaligned ;;
3311     esac
3312
3313 elif enabled avr32; then
3314
3315     case $cpu in
3316         ap7[02]0[0-2])
3317             subarch="avr32_ap"
3318             cpuflags="-mpart=$cpu"
3319         ;;
3320         ap)
3321             subarch="avr32_ap"
3322             cpuflags="-march=$cpu"
3323         ;;
3324         uc3[ab]*)
3325             subarch="avr32_uc"
3326             cpuflags="-mcpu=$cpu"
3327         ;;
3328         uc)
3329             subarch="avr32_uc"
3330             cpuflags="-march=$cpu"
3331         ;;
3332     esac
3333
3334 elif enabled bfin; then
3335
3336     cpuflags="-mcpu=$cpu"
3337
3338 elif enabled mips; then
3339
3340     cpuflags="-march=$cpu"
3341
3342 elif enabled ppc; then
3343
3344     disable ldbrx
3345
3346     case $(tolower $cpu) in
3347         601|ppc601|powerpc601)
3348             cpuflags="-mcpu=601"
3349             disable altivec
3350         ;;
3351         603*|ppc603*|powerpc603*)
3352             cpuflags="-mcpu=603"
3353             disable altivec
3354         ;;
3355         604*|ppc604*|powerpc604*)
3356             cpuflags="-mcpu=604"
3357             disable altivec
3358         ;;
3359         g3|75*|ppc75*|powerpc75*)
3360             cpuflags="-mcpu=750"
3361             disable altivec
3362         ;;
3363         g4|745*|ppc745*|powerpc745*)
3364             cpuflags="-mcpu=7450"
3365             disable vsx
3366         ;;
3367         74*|ppc74*|powerpc74*)
3368             cpuflags="-mcpu=7400"
3369             disable vsx
3370         ;;
3371         g5|970|ppc970|powerpc970)
3372             cpuflags="-mcpu=970"
3373             disable vsx
3374         ;;
3375         power[3-6]*)
3376             cpuflags="-mcpu=$cpu"
3377             disable vsx
3378         ;;
3379         power[7-8]*)
3380             cpuflags="-mcpu=$cpu"
3381             enable ldbrx
3382         ;;
3383         cell)
3384             cpuflags="-mcpu=cell"
3385             enable ldbrx
3386             disable vsx
3387         ;;
3388         e500mc)
3389             cpuflags="-mcpu=e500mc"
3390             disable altivec
3391         ;;
3392         e500v2)
3393             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3394             disable altivec
3395             disable dcbzl
3396         ;;
3397         e500)
3398             cpuflags="-mcpu=8540 -mhard-float"
3399             disable altivec
3400             disable dcbzl
3401         ;;
3402     esac
3403
3404 elif enabled sparc; then
3405
3406     case $cpu in
3407         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3408             cpuflags="-mcpu=$cpu"
3409         ;;
3410         ultrasparc*|niagara[234])
3411             cpuflags="-mcpu=$cpu"
3412         ;;
3413     esac
3414
3415 elif enabled x86; then
3416
3417     case $cpu in
3418         i[345]86|pentium)
3419             cpuflags="-march=$cpu"
3420             disable i686
3421             disable mmx
3422         ;;
3423         # targets that do NOT support nopl and conditional mov (cmov)
3424         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3425             cpuflags="-march=$cpu"
3426             disable i686
3427         ;;
3428         # targets that do support nopl and conditional mov (cmov)
3429         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3430             cpuflags="-march=$cpu"
3431             enable i686
3432             enable fast_cmov
3433         ;;
3434         # targets that do support conditional mov but on which it's slow
3435         pentium4|pentium4m|prescott|nocona)
3436             cpuflags="-march=$cpu"
3437             enable i686
3438             disable fast_cmov
3439         ;;
3440     esac
3441
3442 fi
3443
3444 if [ "$cpu" != generic ]; then
3445     add_cflags  $cpuflags
3446     add_asflags $cpuflags
3447 fi
3448
3449 # compiler sanity check
3450 check_exec <<EOF
3451 int main(void){ return 0; }
3452 EOF
3453 if test "$?" != 0; then
3454     echo "$cc is unable to create an executable file."
3455     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3456         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3457         echo "Only do this if you know what cross compiling means."
3458     fi
3459     die "C compiler test failed."
3460 fi
3461
3462 add_cppflags -D_ISOC99_SOURCE
3463 check_cflags -std=c99
3464 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3465 #include <stdlib.h>
3466 EOF
3467 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3468 #include <stdlib.h>
3469 EOF
3470
3471 add_host_cppflags -D_ISOC99_SOURCE
3472 check_host_cflags -std=c99
3473 check_host_cflags -Wall
3474 check_host_cflags -O3
3475
3476 check_64bit(){
3477     arch32=$1
3478     arch64=$2
3479     expr=$3
3480     check_code cc "" "int test[2*($expr) - 1]" &&
3481         subarch=$arch64 || subarch=$arch32
3482 }
3483
3484 case "$arch" in
3485     aarch64|alpha|ia64)
3486         spic=$shared
3487     ;;
3488     mips)
3489         check_64bit mips mips64 '_MIPS_SIM > 1'
3490         spic=$shared
3491     ;;
3492     parisc)
3493         check_64bit parisc parisc64 'sizeof(void *) > 4'
3494         spic=$shared
3495     ;;
3496     ppc)
3497         check_64bit ppc ppc64 'sizeof(void *) > 4'
3498         spic=$shared
3499     ;;
3500     s390)
3501         check_64bit s390 s390x 'sizeof(void *) > 4'
3502         spic=$shared
3503     ;;
3504     sparc)
3505         check_64bit sparc sparc64 'sizeof(void *) > 4'
3506         spic=$shared
3507     ;;
3508     x86)
3509         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3510         if test "$subarch" = "x86_64"; then
3511             spic=$shared
3512         fi
3513     ;;
3514 esac
3515
3516 enable $subarch
3517 enabled spic && enable_weak pic
3518
3519 # OS specific
3520 case $target_os in
3521     aix)
3522         SHFLAGS=-shared
3523         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3524         enabled shared && add_ldflags -Wl,-brtl
3525         ;;
3526     android)
3527         disable symver
3528         enable section_data_rel_ro
3529         SLIB_INSTALL_NAME='$(SLIBNAME)'
3530         SLIB_INSTALL_LINKS=
3531         # soname not set on purpose
3532         SHFLAGS=-shared
3533         ;;
3534     haiku)
3535         prefix_default="/boot/common"
3536         network_extralibs="-lnetwork"
3537         host_libs=
3538         ;;
3539     sunos)
3540         SHFLAGS='-shared -Wl,-h,$$(@F)'
3541         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3542         network_extralibs="-lsocket -lnsl"
3543         # When using suncc to build, the Solaris linker will mark
3544         # an executable with each instruction set encountered by
3545         # the Solaris assembler.  As our libraries contain their own
3546         # guards for processor-specific code, instead suppress
3547         # generation of the HWCAPS ELF section on Solaris x86 only.
3548         enabled_all suncc x86 &&
3549             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3550             add_ldflags -Wl,-M,mapfile
3551         nm_default='nm -P -g'
3552         ;;
3553     netbsd)
3554         disable symver
3555         oss_indev_extralibs="-lossaudio"
3556         oss_outdev_extralibs="-lossaudio"
3557         ;;
3558     openbsd|bitrig)
3559         disable symver
3560         SHFLAGS='-shared'
3561         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3562         SLIB_INSTALL_LINKS=
3563         oss_indev_extralibs="-lossaudio"
3564         oss_outdev_extralibs="-lossaudio"
3565         ;;
3566     dragonfly)
3567         disable symver
3568         ;;
3569     freebsd)
3570         ;;
3571     bsd/os)
3572         add_extralibs -lpoll -lgnugetopt
3573         ;;
3574     darwin)
3575         enabled ppc && add_asflags -force_cpusubtype_ALL
3576         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3577         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3578         add_ldflags -Wl,-dynamic,-search_paths_first
3579         SLIBSUF=".dylib"
3580         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3581         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3582         objformat="macho"
3583         enabled x86_64 && objformat="macho64"
3584         enabled_any pic shared ||
3585             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3586         ;;
3587     mingw32*)
3588         if test $target_os = "mingw32ce"; then
3589             disable network
3590         else
3591             target_os=mingw32
3592         fi
3593         LIBTARGET=i386
3594         if enabled x86_64; then
3595             LIBTARGET="i386:x86-64"
3596         elif enabled arm; then
3597             LIBTARGET=arm-wince
3598         fi
3599         check_ldflags -Wl,--nxcompat
3600         check_ldflags -Wl,--dynamicbase
3601         shlibdir_default="$bindir_default"
3602         SLIBPREF=""
3603         SLIBSUF=".dll"
3604         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3605         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3606         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3607         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3608         SLIB_INSTALL_LINKS=
3609         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3610         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3611         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3612         objformat="win32"
3613         dlltool="${cross_prefix}dlltool"
3614         ranlib=:
3615         enable dos_paths
3616         ;;
3617     win32|win64)
3618         disable symver
3619         if enabled shared; then
3620             # Link to the import library instead of the normal static library
3621             # for shared libs.
3622             LD_LIB='%.lib'
3623             # Cannot build both shared and static libs with MSVC or icl.
3624             disable static
3625         fi
3626         shlibdir_default="$bindir_default"
3627         SLIBPREF=""
3628         SLIBSUF=".dll"
3629         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3630         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3631         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3632         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3633         SLIB_INSTALL_LINKS=
3634         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3635         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3636         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3637         objformat="win32"
3638         ranlib=:
3639         enable dos_paths
3640         ;;
3641     cygwin*)
3642         target_os=cygwin
3643         shlibdir_default="$bindir_default"
3644         SLIBPREF="cyg"
3645         SLIBSUF=".dll"
3646         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3647         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3648         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3649         SLIB_INSTALL_LINKS=
3650         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3651         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3652         objformat="win32"
3653         enable dos_paths
3654         ;;
3655     *-dos|freedos|opendos)
3656         network_extralibs="-lsocket"
3657         objformat="coff"
3658         enable dos_paths
3659         add_cppflags -U__STRICT_ANSI__
3660         ;;
3661     linux)
3662         enable dv1394
3663         enable section_data_rel_ro
3664         ;;
3665     irix*)
3666         target_os=irix
3667         ranlib="echo ignoring ranlib"
3668         ;;
3669     os/2*)
3670         ln_s="cp -f"
3671         objformat="aout"
3672         add_cppflags -D_GNU_SOURCE
3673         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3674         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3675         LIBSUF="_s.a"
3676         SLIBPREF=""
3677         SLIBSUF=".dll"
3678         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3679         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3680         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3681             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3682             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3683             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3684             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3685         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3686             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3687         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3688         enable dos_paths
3689         ;;
3690     gnu/kfreebsd)
3691         add_cppflags -D_BSD_SOURCE
3692         ;;
3693     gnu)
3694         ;;
3695     qnx)
3696         add_cppflags -D_QNX_SOURCE
3697         network_extralibs="-lsocket"
3698         ;;
3699     symbian)
3700         SLIBSUF=".dll"
3701         enable dos_paths
3702         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3703         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3704         add_ldflags -Wl,--target1-abs,--no-undefined \
3705                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3706                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3707         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3708                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3709                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3710         ;;
3711     osf1)
3712         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3713         ;;
3714     minix)
3715         ;;
3716     plan9)
3717         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3718                      -D_REENTRANT_SOURCE        \
3719                      -D_RESEARCH_SOURCE         \
3720                      -DFD_SETSIZE=96            \
3721                      -DHAVE_SOCK_OPTS
3722         add_compat strtod.o strtod=avpriv_strtod
3723         network_extralibs='-lbsd'
3724         exeobjs=compat/plan9/main.o
3725         cp_f='cp'
3726         ;;
3727     none)
3728         ;;
3729     *)
3730         die "Unknown OS '$target_os'."
3731         ;;
3732 esac
3733
3734 # determine libc flavour
3735
3736 probe_libc(){
3737     pfx=$1
3738     pfx_no_=${pfx%_}
3739     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3740     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3741         eval ${pfx}libc_type=uclibc
3742         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3743     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3744         eval ${pfx}libc_type=glibc
3745         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3746     # MinGW headers can be installed on Cygwin, so check for newlib first.
3747     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3748         eval ${pfx}libc_type=newlib
3749         add_${pfx}cppflags -U__STRICT_ANSI__
3750     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3751     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3752         eval ${pfx}libc_type=mingw64
3753         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3754         eval test \$${pfx_no_}cc_type = "gcc" &&
3755             add_${pfx}cppflags -D__printf__=__gnu_printf__
3756     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3757          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3758         eval ${pfx}libc_type=mingw32
3759         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3760             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3761             die "ERROR: MinGW32 runtime version must be >= 3.15."
3762         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3763         eval test \$${pfx_no_}cc_type = "gcc" &&
3764             add_${pfx}cppflags -D__printf__=__gnu_printf__
3765     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3766         eval ${pfx}libc_type=msvcrt
3767         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3768             if [ "$pfx" = host_ ]; then
3769                 add_host_cppflags -Dsnprintf=_snprintf
3770             else
3771                 add_compat strtod.o strtod=avpriv_strtod
3772                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3773                                              _snprintf=avpriv_snprintf  \
3774                                              vsnprintf=avpriv_vsnprintf
3775             fi
3776         fi
3777         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3778         # 0x601 by default unless something else is set by the user.
3779         # This can easily lead to us detecting functions only present
3780         # in such new versions and producing binaries requiring windows 7.0.
3781         # Therefore explicitly set the default to XP unless the user has
3782         # set something else on the command line.
3783         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3784             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3785     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3786         eval ${pfx}libc_type=klibc
3787     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3788         eval ${pfx}libc_type=bionic
3789     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3790         eval ${pfx}libc_type=solaris
3791         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3792     else
3793         eval ${pfx}libc_type=default
3794         add_${pfx}cppflags -D_DEFAULT_SOURCE
3795     fi
3796 }
3797
3798 probe_libc
3799 test -n "$libc_type" && enable libc_$libc_type
3800 probe_libc host_
3801 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3802
3803 case $libc_type in
3804     bionic)
3805         add_compat strtod.o strtod=avpriv_strtod
3806         ;;
3807 esac
3808
3809 # hacks for compiler/libc/os combinations
3810
3811 if enabled_all tms470 libc_glibc; then
3812     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3813     add_cppflags -D__USER_LABEL_PREFIX__=
3814     add_cppflags -D__builtin_memset=memset
3815     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3816     add_cflags   -pds=48    # incompatible redefinition of macro
3817 fi
3818
3819 if enabled_all ccc libc_glibc; then
3820     add_ldflags -Wl,-z,now  # calls to libots crash without this
3821 fi
3822
3823 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3824     add_cppflags '-I\$(SRC_PATH)/compat/float'
3825
3826 esc(){
3827     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3828 }
3829
3830 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3831
3832 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3833
3834 set_default $PATHS_LIST
3835 set_default nm
3836
3837 # we need to build at least one lib type
3838 if ! enabled_any static shared; then
3839     cat <<EOF
3840 At least one library type must be built.
3841 Specify --enable-static to build the static libraries or --enable-shared to
3842 build the shared libraries as well. To only build the shared libraries specify
3843 --disable-static in addition to --enable-shared.
3844 EOF
3845     exit 1;
3846 fi
3847
3848 die_license_disabled() {
3849     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3850 }
3851
3852 die_license_disabled gpl libcdio
3853 die_license_disabled gpl libx264
3854 die_license_disabled gpl libx265
3855 die_license_disabled gpl libxavs
3856 die_license_disabled gpl libxvid
3857 die_license_disabled gpl x11grab
3858
3859 die_license_disabled nonfree libfaac
3860 die_license_disabled nonfree libfdk_aac
3861 die_license_disabled nonfree nvenc
3862 die_license_disabled nonfree openssl
3863
3864 die_license_disabled version3 libopencore_amrnb
3865 die_license_disabled version3 libopencore_amrwb
3866 die_license_disabled version3 libvo_aacenc
3867 die_license_disabled version3 libvo_amrwbenc
3868
3869 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3870
3871 disabled optimizations || check_cflags -fomit-frame-pointer
3872
3873 enable_weak_pic() {
3874     disabled pic && return
3875     enable pic
3876     add_cppflags -DPIC
3877     case "$target_os" in
3878     mingw*|cygwin*)
3879         ;;
3880     *)
3881         add_cflags -fPIC
3882         ;;
3883     esac
3884     add_asflags  -fPIC
3885 }
3886
3887 enabled pic && enable_weak_pic
3888
3889 check_cc <<EOF || die "Symbol mangling check failed."
3890 int ff_extern;
3891 EOF
3892 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3893 extern_prefix=${sym%%ff_extern*}
3894
3895 check_cc <<EOF && enable_weak inline_asm
3896 void foo(void) { __asm__ volatile ("" ::); }
3897 EOF
3898
3899 _restrict=
3900 for restrict_keyword in restrict __restrict__ __restrict; do
3901     check_cc <<EOF && _restrict=$restrict_keyword && break
3902 void foo(char * $restrict_keyword p);
3903 EOF
3904 done
3905
3906 check_cc <<EOF && enable pragma_deprecated
3907 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3908 EOF
3909
3910 check_cc <<EOF && enable attribute_packed
3911 struct { int x; } __attribute__((packed)) x;
3912 EOF
3913
3914 check_cc <<EOF && enable attribute_may_alias
3915 union { int x; } __attribute__((may_alias)) x;
3916 EOF
3917
3918 check_cc <<EOF || die "endian test failed"
3919 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3920 EOF
3921 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3922
3923 check_gas() {
3924     log "check_gas using '$as' as AS"
3925     # :vararg is used on aarch64, arm and ppc altivec
3926     check_as <<EOF || return 1
3927 .macro m n, y:vararg=0
3928 \n: .int \y
3929 .endm
3930 m x
3931 EOF
3932     # .altmacro is only used in arm asm
3933     ! enabled arm || check_as <<EOF || return 1
3934 .altmacro
3935 EOF
3936     enable gnu_as
3937     return 0
3938 }
3939
3940 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3941     nogas=:
3942     enabled_any arm aarch64 && nogas=die
3943     enabled_all ppc altivec && nogas=warn
3944     as_noop=-v
3945
3946     case $as_type in
3947         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3948         gcc)  gaspp_as_type=gas ;;
3949         *)    gaspp_as_type=$as_type ;;
3950     esac
3951
3952     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3953
3954     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3955         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3956
3957     if ! check_gas ; then
3958         as=${gas:=$as}
3959         check_gas || \
3960             $nogas "GNU assembler not found, install/update gas-preprocessor"
3961     fi
3962
3963     check_as <<EOF && enable as_func
3964 .func test
3965 .endfunc
3966 EOF
3967 fi
3968
3969 check_inline_asm inline_asm_labels '"1:\n"'
3970
3971 if enabled aarch64; then
3972     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3973     # internal assembler in clang 3.3 does not support this instruction
3974     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3975     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3976
3977     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3978
3979 elif enabled alpha; then
3980
3981     check_cflags -mieee
3982
3983 elif enabled arm; then
3984
3985     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3986     enabled thumb && check_cflags -mthumb || check_cflags -marm
3987
3988     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3989         enable vfp_args
3990     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3991         case "${cross_prefix:-$cc}" in
3992             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3993             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3994 __asm__ (".eabi_attribute 28, 1");
3995 int main(void) { return 0; }
3996 EOF
3997         esac
3998         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3999     fi
4000
4001     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4002     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4003     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4004     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4005     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4006     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4007
4008     [ $target_os = linux ] || [ $target_os = android ] ||
4009         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4010             $ARCH_EXT_LIST_ARM
4011
4012     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4013
4014     check_as <<EOF && enable as_dn_directive
4015 ra .dn d0.i16
4016 .unreq ra
4017 EOF
4018
4019     # llvm's integrated assembler supports .object_arch from llvm 3.5
4020     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4021 .object_arch armv4
4022 EOF
4023
4024     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4025
4026 elif enabled mips; then
4027
4028     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4029
4030 elif enabled parisc; then
4031
4032     if enabled gcc; then
4033         case $($cc -dumpversion) in
4034             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4035         esac
4036     fi
4037
4038 elif enabled ppc; then
4039
4040     enable local_aligned_8 local_aligned_16
4041
4042     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4043     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4044     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4045     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4046
4047     # AltiVec flags: The FSF version of GCC differs from the Apple version
4048     if enabled altivec; then
4049         check_cflags -maltivec -mabi=altivec &&
4050         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4051         check_cflags -faltivec
4052
4053         # check if our compiler supports Motorola AltiVec C API
4054         check_cc <<EOF || disable altivec
4055 $inc_altivec_h
4056 int main(void) {
4057     vector signed int v1 = (vector signed int) { 0 };
4058     vector signed int v2 = (vector signed int) { 1 };
4059     v1 = vec_add(v1, v2);
4060     return 0;
4061 }
4062 EOF
4063
4064         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4065     fi
4066
4067     if enabled vsx; then
4068         check_cflags -mvsx &&
4069         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4070     fi
4071
4072     if enabled power8; then
4073         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4074     fi
4075
4076 elif enabled x86; then
4077
4078     check_builtin rdtsc    intrin.h   "__rdtsc()"
4079     check_builtin mm_empty mmintrin.h "_mm_empty()"
4080
4081     enable local_aligned_8 local_aligned_16
4082
4083     # check whether EBP is available on x86
4084     # As 'i' is stored on the stack, this program will crash
4085     # if the base pointer is used to access it because the
4086     # base pointer is cleared in the inline assembly code.
4087     check_exec_crash <<EOF && enable ebp_available
4088 volatile int i=0;
4089 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4090 return i;
4091 EOF
4092
4093     # check whether EBX is available on x86
4094     check_inline_asm ebx_available '""::"b"(0)' &&
4095         check_inline_asm ebx_available '"":::"%ebx"'
4096
4097     # check whether xmm clobbers are supported
4098     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4099
4100     # check whether binutils is new enough to compile SSSE3/MMXEXT
4101     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4102     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4103
4104     if ! disabled_any asm mmx yasm; then
4105         if check_cmd $yasmexe --version; then
4106             enabled x86_64 && yasm_extra="-m amd64"
4107             yasm_debug="-g dwarf2"
4108         elif check_cmd nasm -v; then
4109             yasmexe=nasm
4110             yasm_debug="-g -F dwarf"
4111             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4112         fi
4113
4114         YASMFLAGS="-f $objformat $yasm_extra"
4115         enabled pic               && append YASMFLAGS "-DPIC"
4116         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4117         case "$objformat" in
4118             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4119         esac
4120
4121         check_yasm "movbe ecx, [5]" && enable yasm ||
4122             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4123         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4124         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4125         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4126         check_yasm "CPU amdnop" || disable cpunop
4127     fi
4128
4129     case "$cpu" in
4130         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4131             disable fast_clz
4132         ;;
4133     esac
4134
4135 fi
4136
4137 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4138
4139 check_ldflags -Wl,--as-needed
4140
4141 if check_func dlopen; then
4142     ldl=
4143 elif check_func dlopen -ldl; then
4144     ldl=-ldl
4145 fi
4146
4147 if ! disabled network; then
4148     check_func getaddrinfo $network_extralibs
4149     check_func getservbyport $network_extralibs
4150     check_func inet_aton $network_extralibs
4151
4152     check_type netdb.h "struct addrinfo"
4153     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4154     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4155     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4156     check_type poll.h "struct pollfd"
4157     check_type netinet/sctp.h "struct sctp_event_subscribe"
4158     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4159     check_type netinet/in.h "struct sockaddr_in6"
4160     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4161     check_type "sys/types.h sys/socket.h" socklen_t
4162
4163     # Prefer arpa/inet.h over winsock2
4164     if check_header arpa/inet.h ; then
4165         check_func closesocket
4166     elif check_header winsock2.h ; then
4167         check_func_headers winsock2.h closesocket -lws2 &&
4168             network_extralibs="-lws2" ||
4169         { check_func_headers winsock2.h closesocket -lws2_32 &&
4170             network_extralibs="-lws2_32"; } || disable winsock2_h network
4171         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4172
4173         check_type ws2tcpip.h socklen_t
4174         check_type ws2tcpip.h "struct addrinfo"
4175         check_type ws2tcpip.h "struct group_source_req"
4176         check_type ws2tcpip.h "struct ip_mreq_source"
4177         check_type ws2tcpip.h "struct ipv6_mreq"
4178         check_type winsock2.h "struct pollfd"
4179         check_struct winsock2.h "struct sockaddr" sa_len
4180         check_type ws2tcpip.h "struct sockaddr_in6"
4181         check_type ws2tcpip.h "struct sockaddr_storage"
4182     else
4183         disable network
4184     fi
4185 fi
4186
4187 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4188 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4189 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4190 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4191
4192 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4193 check_func  ${malloc_prefix}memalign            && enable memalign
4194 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4195
4196 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4197     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4198
4199 check_func  fcntl
4200 check_func  fork
4201 check_func  gethrtime
4202 check_func  getopt
4203 check_func  getrusage
4204 check_func  gettimeofday
4205 check_func  gmtime_r
4206 check_func  isatty
4207 check_func  localtime_r
4208 check_func  mach_absolute_time
4209 check_func  mkstemp
4210 check_func  mmap
4211 check_func  mprotect
4212 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4213 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4214 check_func  sched_getaffinity
4215 check_func  setrlimit
4216 check_func  strerror_r
4217 check_func  sysconf
4218 check_func  sysctl
4219 check_func  usleep
4220
4221 check_func_headers io.h setmode
4222 check_func_headers stdlib.h getenv
4223
4224 check_func_headers windows.h CoTaskMemFree -lole32
4225 check_func_headers windows.h GetProcessAffinityMask
4226 check_func_headers windows.h GetProcessTimes
4227 check_func_headers windows.h GetSystemTimeAsFileTime
4228 check_func_headers windows.h LoadLibrary
4229 check_func_headers windows.h MapViewOfFile
4230 check_func_headers windows.h SetConsoleTextAttribute
4231 check_func_headers windows.h Sleep
4232 check_func_headers windows.h VirtualAlloc
4233 check_struct windows.h "CONDITION_VARIABLE" Ptr
4234
4235 check_header direct.h
4236 check_header dlfcn.h
4237 check_header d3d11.h
4238 check_header dxva.h
4239 check_header dxva2api.h
4240 check_header io.h
4241 check_header mach/mach_time.h
4242 check_header malloc.h
4243 check_header poll.h
4244 check_header sys/mman.h
4245 check_header sys/param.h
4246 check_header sys/resource.h
4247 check_header sys/select.h
4248 check_header sys/time.h
4249 check_header sys/un.h
4250 check_header unistd.h
4251 check_header valgrind/valgrind.h
4252 check_header vdpau/vdpau.h
4253 check_header vdpau/vdpau_x11.h
4254 check_header VideoDecodeAcceleration/VDADecoder.h
4255 check_header windows.h
4256 check_header X11/extensions/XvMClib.h
4257
4258 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4259 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4260 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4261
4262 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4263
4264 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4265 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4266 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4267
4268 if ! disabled w32threads && ! enabled pthreads; then
4269     check_func_headers "windows.h process.h" _beginthreadex &&
4270         enable w32threads || disable w32threads
4271 fi
4272
4273 # check for some common methods of building with pthread support
4274 # do this before the optional library checks as some of them require pthreads
4275 if ! disabled pthreads && ! enabled w32threads; then
4276     enable pthreads
4277     if check_func pthread_join -pthread; then
4278         add_cflags -pthread
4279         add_extralibs -pthread
4280     elif check_func pthread_join -pthreads; then
4281         add_cflags -pthreads
4282         add_extralibs -pthreads
4283     elif check_func pthread_join -lpthreadGC2; then
4284         add_extralibs -lpthreadGC2
4285     elif check_lib pthread.h pthread_join -lpthread; then
4286         :
4287     elif ! check_func pthread_join; then
4288         disable pthreads
4289     fi
4290 fi
4291
4292 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4293 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4294
4295 check_lib math.h sin -lm && LIBM="-lm"
4296 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4297
4298 atan2f_args=2
4299 ldexpf_args=2
4300 powf_args=2
4301
4302 for func in $MATH_FUNCS; do
4303     eval check_mathfunc $func \${${func}_args:-1}
4304 done
4305
4306 # these are off by default, so fail if requested and not available
4307 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4308                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4309                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4310 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4311 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4312 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4313 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4314 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4315 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4316 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4317 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4318 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4319                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4320                                done || die "ERROR: libgsm not found"; }
4321 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4322 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4323 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4324 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4325 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4326 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4327 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4328 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4329                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4330 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4331 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4332 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4333 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4334 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4335 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4336 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4337 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4338 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4339 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4340 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4341 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4342     enabled libvpx_vp8_decoder && {
4343         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4344             disable libvpx_vp8_decoder;
4345     }
4346     enabled libvpx_vp8_encoder && {
4347         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4348             disable libvpx_vp8_encoder;
4349     }
4350     enabled libvpx_vp9_decoder && {
4351         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4352             disable libvpx_vp9_decoder;
4353     }
4354     enabled libvpx_vp9_encoder && {
4355         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4356             disable libvpx_vp9_encoder;
4357     }
4358     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4359         die "libvpx enabled but no supported decoders found"
4360     fi
4361 }
4362 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4363 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4364 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4365                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4366                                die "ERROR: libx264 version must be >= 0.118."; } &&
4367                              { check_cpp_condition x264.h "X264_MPEG2" &&
4368                                enable libx262; }
4369 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4370                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4371                                die "ERROR: libx265 version must be >= 57."; }
4372 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4373 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4374 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4375                                 { ! enabled cross_compile && {
4376                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4377                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4378                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4379                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4380                                die "ERROR: mmal not found"; }
4381 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4382                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4383                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4384                                die "ERROR: openssl not found"; }
4385
4386 if enabled gnutls; then
4387     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4388     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4389 fi
4390
4391 # libdc1394 check
4392 if enabled libdc1394; then
4393     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4394         enable libdc1394_2; } ||
4395     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4396         enable libdc1394_1; } ||
4397     die "ERROR: No version of libdc1394 found "
4398 fi
4399
4400 if enabled nvenc; then
4401     check_header cuda.h || die "ERROR: cuda.h not found.";
4402     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4403     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4404         die "ERROR: NVENC API version 4 or older is not supported";
4405 fi
4406
4407 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4408     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4409     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4410     enable sdl
4411 fi
4412
4413 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4414 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4415
4416 check_header linux/fb.h
4417 check_header linux/videodev2.h
4418 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4419
4420 check_header sys/videoio.h
4421
4422 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4423 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4424 # w32api 3.12 had it defined wrong
4425 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4426
4427 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4428 { check_header dev/bktr/ioctl_meteor.h &&
4429   check_header dev/bktr/ioctl_bt848.h; } ||
4430 { check_header machine/ioctl_meteor.h &&
4431   check_header machine/ioctl_bt848.h; } ||
4432 { check_header dev/video/meteor/ioctl_meteor.h &&
4433   check_header dev/video/bktr/ioctl_bt848.h; } ||
4434 check_header dev/ic/bt8xx.h
4435
4436 check_header sndio.h
4437 check_header sys/soundcard.h
4438 check_header soundcard.h
4439
4440 enabled_any alsa_indev alsa_outdev &&
4441     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4442
4443 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4444     check_func jack_port_get_latency_range -ljack
4445
4446 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4447
4448 if enabled libcdio; then
4449     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4450     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4451     die "ERROR: No usable libcdio/cdparanoia found"
4452 fi
4453
4454 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4455
4456 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4457     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4458         enabled libxcb && die "ERROR: libxcb not found";
4459     } && disable x11grab && enable libxcb
4460
4461     disabled libxcb_shm ||
4462         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4463             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4464         } && check_header sys/shm.h && enable libxcb_shm
4465
4466     disabled libxcb_xfixes ||
4467         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4468             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4469         } && enable libxcb_xfixes
4470
4471     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4472     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4473 fi
4474
4475 if enabled x11grab; then
4476     enabled xlib || die "ERROR: Xlib not found"
4477     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4478     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4479 fi
4480
4481 enabled vaapi && enabled xlib &&
4482     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4483     enable vaapi_x11
4484
4485 enabled vdpau &&
4486     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4487     disable vdpau
4488
4489 enabled vdpau && enabled xlib &&
4490     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4491     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4492     enable vdpau_x11
4493
4494 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4495
4496 # add some useful compiler flags if supported
4497 check_cflags -Wdeclaration-after-statement
4498 check_cflags -Wall
4499 check_cflags -Wdisabled-optimization
4500 check_cflags -Wpointer-arith
4501 check_cflags -Wredundant-decls
4502 check_cflags -Wcast-qual
4503 check_cflags -Wwrite-strings
4504 check_cflags -Wtype-limits
4505 check_cflags -Wundef
4506 check_cflags -Wmissing-prototypes
4507 check_cflags -Wstrict-prototypes
4508 enabled extra_warnings && check_cflags -Winline
4509
4510 check_disable_warning(){
4511     warning_flag=-W${1#-Wno-}
4512     test_cflags $warning_flag && add_cflags $1
4513 }
4514
4515 check_disable_warning -Wno-parentheses
4516 check_disable_warning -Wno-switch
4517 check_disable_warning -Wno-format-zero-length
4518 check_disable_warning -Wno-pointer-sign
4519
4520 # add some linker flags
4521 check_ldflags -Wl,--warn-common
4522 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4523 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4524 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4525
4526 # add some strip flags
4527 # -wN '..@*' is more selective than -x, but not available everywhere.
4528 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4529
4530 enabled neon_clobber_test &&
4531     check_ldflags -Wl,--wrap,avcodec_open2              \
4532                   -Wl,--wrap,avcodec_decode_audio4      \
4533                   -Wl,--wrap,avcodec_decode_video2      \
4534                   -Wl,--wrap,avcodec_decode_subtitle2   \
4535                   -Wl,--wrap,avcodec_encode_audio2      \
4536                   -Wl,--wrap,avcodec_encode_video2      \
4537                   -Wl,--wrap,avcodec_encode_subtitle    \
4538                   -Wl,--wrap,avresample_convert ||
4539     disable neon_clobber_test
4540
4541 enabled xmm_clobber_test &&
4542     check_ldflags -Wl,--wrap,avcodec_open2              \
4543                   -Wl,--wrap,avcodec_decode_audio4      \
4544                   -Wl,--wrap,avcodec_decode_video2      \
4545                   -Wl,--wrap,avcodec_decode_subtitle2   \
4546                   -Wl,--wrap,avcodec_encode_audio2      \
4547                   -Wl,--wrap,avcodec_encode_video2      \
4548                   -Wl,--wrap,avcodec_encode_subtitle    \
4549                   -Wl,--wrap,avresample_convert         \
4550                   -Wl,--wrap,sws_scale ||
4551     disable xmm_clobber_test
4552
4553 echo "X{};" > $TMPV
4554 if test_ldflags -Wl,--version-script,$TMPV; then
4555     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4556     check_cc <<EOF && enable symver_asm_label
4557 void ff_foo(void) __asm__ ("av_foo@VERSION");
4558 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4559 EOF
4560     check_cc <<EOF && enable symver_gnu_asm
4561 __asm__(".symver ff_foo,av_foo@VERSION");
4562 void ff_foo(void) {}
4563 EOF
4564 fi
4565
4566 if [ -z "$optflags" ]; then
4567     if enabled small; then
4568         optflags=$cflags_size
4569     elif enabled optimizations; then
4570         optflags=$cflags_speed
4571     else
4572         optflags=$cflags_noopt
4573     fi
4574 fi
4575
4576 check_optflags(){
4577     check_cflags "$@"
4578     enabled lto && check_ldflags "$@"
4579 }
4580
4581
4582 if enabled lto; then
4583     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4584     check_cflags  -flto
4585     check_ldflags -flto $cpuflags
4586 fi
4587
4588 check_optflags $optflags
4589 check_optflags -fno-math-errno
4590 check_optflags -fno-signed-zeros
4591
4592 if enabled icc; then
4593     # Just warnings, no remarks
4594     check_cflags -w1
4595     # -wd: Disable following warnings
4596     # 144, 167, 556: -Wno-pointer-sign
4597     # 1292: attribute "foo" ignored
4598     # 1419: external declaration in primary source file
4599     # 10006: ignoring unknown option -fno-signed-zeros
4600     # 10148: ignoring unknown option -Wno-parentheses
4601     # 10156: ignoring option '-W'; no argument required
4602     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4603     # 11030: Warning unknown option --as-needed
4604     # 10156: ignoring option '-export'; no argument required
4605     check_ldflags -wd10156,11030
4606     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4607     enable ebp_available
4608     if enabled x86_32; then
4609         icc_version=$($cc -dumpversion)
4610         test ${icc_version%%.*} -ge 11 &&
4611             check_cflags -falign-stack=maintain-16-byte ||
4612             disable aligned_stack
4613     fi
4614 elif enabled ccc; then
4615     # disable some annoying warnings
4616     add_cflags -msg_disable bitnotint
4617     add_cflags -msg_disable mixfuncvoid
4618     add_cflags -msg_disable nonstandcast
4619     add_cflags -msg_disable unsupieee
4620 elif enabled gcc; then
4621     check_optflags -fno-tree-vectorize
4622     check_cflags -Werror=implicit-function-declaration
4623     check_cflags -Werror=missing-prototypes
4624     check_cflags -Werror=return-type
4625     check_cflags -Werror=declaration-after-statement
4626     check_cflags -Werror=vla
4627     check_cflags -Werror=format-security
4628     check_cflags -fdiagnostics-color=auto
4629     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4630 elif enabled llvm_gcc; then
4631     check_cflags -mllvm -stack-alignment=16
4632 elif enabled clang; then
4633     check_cflags -mllvm -stack-alignment=16
4634     check_cflags -Qunused-arguments
4635     check_cflags -Werror=implicit-function-declaration
4636     check_cflags -Werror=missing-prototypes
4637     check_cflags -Werror=return-type
4638 elif enabled cparser; then
4639     add_cflags -Wno-missing-variable-declarations
4640     add_cflags -Wno-empty-statement
4641 elif enabled armcc; then
4642     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4643     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4644     # 2523: use of inline assembly is deprecated
4645     add_cflags -W${armcc_opt},--diag_suppress=2523
4646     add_cflags -W${armcc_opt},--diag_suppress=1207
4647     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4648     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4649     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4650     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4651 elif enabled tms470; then
4652     add_cflags -pds=824 -pds=837
4653     disable inline_asm
4654 elif enabled pathscale; then
4655     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4656 elif enabled_any msvc icl; then
4657     enabled x86_32 && disable aligned_stack
4658     enabled_all x86_32 debug && add_cflags -Oy-
4659     enabled debug && add_ldflags -debug
4660     enable pragma_deprecated
4661     if enabled icl; then
4662         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4663         # (correctly) on icl 13.x.
4664         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4665             add_cflags -Qansi-alias
4666         # icl will pass the inline asm tests but inline asm is currently
4667         # not supported (build will fail)
4668         disable inline_asm
4669     fi
4670     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4671     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4672 fi
4673
4674 case $as_type in
4675     clang)
4676         add_asflags -Qunused-arguments
4677     ;;
4678 esac
4679
4680 case $ld_type in
4681     clang)
4682         check_ldflags -Qunused-arguments
4683     ;;
4684 esac
4685
4686 case $target_os in
4687     osf1)
4688         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4689     ;;
4690     plan9)
4691         add_cppflags -Dmain=plan9_main
4692     ;;
4693 esac
4694
4695 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4696
4697 check_deps $CONFIG_LIST       \
4698            $CONFIG_EXTRA      \
4699            $HAVE_LIST         \
4700            $ALL_COMPONENTS    \
4701
4702 enabled_all dxva2 CoTaskMemFree &&
4703     prepend avconv_libs $($ldflags_filter "-lole32") &&
4704     enable dxva2_lib
4705
4706 ! enabled_any memalign posix_memalign aligned_malloc &&
4707     enabled simd_align_16 && enable memalign_hack
4708
4709 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4710
4711 for thread in $THREADS_LIST; do
4712     if enabled $thread; then
4713         test -n "$thread_type" &&
4714             die "ERROR: Only one thread type must be selected." ||
4715             thread_type="$thread"
4716     fi
4717 done
4718
4719 enabled zlib && add_cppflags -DZLIB_CONST
4720
4721 # conditional library dependencies, in linking order
4722 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4723 enabled resample_filter && prepend avfilter_deps "avresample"
4724 enabled scale_filter    && prepend avfilter_deps "swscale"
4725
4726 enabled opus_decoder    && prepend avcodec_deps "avresample"
4727
4728 expand_deps(){
4729     lib_deps=${1}_deps
4730     eval "deps=\$$lib_deps"
4731     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4732     unique $lib_deps
4733 }
4734
4735 map 'expand_deps $v' $LIBRARY_LIST
4736
4737 echo "install prefix            $prefix"
4738 echo "source path               $source_path"
4739 echo "C compiler                $cc"
4740 echo "C library                 $libc_type"
4741 if test "$host_cc" != "$cc"; then
4742     echo "host C compiler           $host_cc"
4743     echo "host C library            $host_libc_type"
4744 fi
4745 echo "ARCH                      $arch ($cpu)"
4746 if test "$build_suffix" != ""; then
4747     echo "build suffix              $build_suffix"
4748 fi
4749 if test "$extra_version" != ""; then
4750     echo "version string suffix     $extra_version"
4751 fi
4752 echo "big-endian                ${bigendian-no}"
4753 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4754 if enabled x86; then
4755     echo "${yasmexe}                      ${yasm-no}"
4756     echo "MMX enabled               ${mmx-no}"
4757     echo "MMXEXT enabled            ${mmxext-no}"
4758     echo "3DNow! enabled            ${amd3dnow-no}"
4759     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4760     echo "SSE enabled               ${sse-no}"
4761     echo "SSSE3 enabled             ${ssse3-no}"
4762     echo "AVX enabled               ${avx-no}"
4763     echo "XOP enabled               ${xop-no}"
4764     echo "FMA3 enabled              ${fma3-no}"
4765     echo "FMA4 enabled              ${fma4-no}"
4766     echo "i686 features enabled     ${i686-no}"
4767     echo "CMOV is fast              ${fast_cmov-no}"
4768     echo "EBX available             ${ebx_available-no}"
4769     echo "EBP available             ${ebp_available-no}"
4770 fi
4771 if enabled aarch64; then
4772     echo "NEON enabled              ${neon-no}"
4773     echo "VFP enabled               ${vfp-no}"
4774 fi
4775 if enabled arm; then
4776     echo "ARMv5TE enabled           ${armv5te-no}"
4777     echo "ARMv6 enabled             ${armv6-no}"
4778     echo "ARMv6T2 enabled           ${armv6t2-no}"
4779     echo "VFP enabled               ${vfp-no}"
4780     echo "NEON enabled              ${neon-no}"
4781 fi
4782 if enabled ppc; then
4783     echo "AltiVec enabled           ${altivec-no}"
4784     echo "VSX enabled               ${vsx-no}"
4785     echo "POWER8 enabled            ${power8-no}"
4786     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4787     echo "dcbzl available           ${dcbzl-no}"
4788 fi
4789 echo "debug symbols             ${debug-no}"
4790 echo "optimize for size         ${small-no}"
4791 echo "optimizations             ${optimizations-no}"
4792 echo "static                    ${static-no}"
4793 echo "shared                    ${shared-no}"
4794 echo "new filter support        ${avfilter-no}"
4795 echo "network support           ${network-no}"
4796 echo "threading support         ${thread_type-no}"
4797 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4798 echo "SDL support               ${sdl-no}"
4799 test -n "$random_seed" &&
4800     echo "random seed               ${random_seed}"
4801 echo
4802
4803 echo "External libraries:"
4804 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4805 echo
4806
4807 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4808     echo "Enabled ${type}s:"
4809     eval list=\$$(toupper $type)_LIST
4810     print_enabled '_*' $list | print_3_columns
4811     echo
4812 done
4813
4814 license="LGPL version 2.1 or later"
4815 if enabled nonfree; then
4816     license="nonfree and unredistributable"
4817 elif enabled gplv3; then
4818     license="GPL version 3 or later"
4819 elif enabled lgplv3; then
4820     license="LGPL version 3 or later"
4821 elif enabled gpl; then