615a648fcac5a1ddac82d900f1bc0f12cad93efa
[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-libkvazaar      enable HEVC encoding via libkvazaar [no]
195   --enable-libmfx          enable HW acceleration through libmfx
196   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
197   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
198   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
199   --enable-libopencv       enable video filtering via libopencv [no]
200   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
201   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
202   --enable-libopus         enable Opus de/encoding via libopus [no]
203   --enable-libpulse        enable Pulseaudio input via libpulse [no]
204   --enable-librtmp         enable RTMP[E] support via librtmp [no]
205   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
206   --enable-libsnappy       enable Snappy compression [no]
207   --enable-libspeex        enable Speex de/encoding via libspeex [no]
208   --enable-libtheora       enable Theora encoding via libtheora [no]
209   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
210   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
211   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
212   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
213   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
214   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
215   --enable-libwebp         enable WebP encoding via libwebp [no]
216   --enable-libx264         enable H.264 encoding via x264 [no]
217   --enable-libx265         enable HEVC encoding via x265 [no]
218   --enable-libxavs         enable AVS encoding via xavs [no]
219   --enable-libxcb          enable X11 grabbing using XCB [no]
220   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
221   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
222   --enable-libxvid         enable Xvid encoding via xvidcore,
223                            native MPEG-4/Xvid encoder exists [no]
224   --enable-mmal            enable decoding via MMAL [no]
225   --enable-nvenc           enable encoding via NVENC [no]
226   --enable-openssl         enable openssl [no]
227   --enable-x11grab         enable X11 grabbing (legacy) [no]
228   --enable-zlib            enable zlib [autodetect]
229
230 Toolchain options:
231   --arch=ARCH              select architecture [$arch]
232   --cpu=CPU                select the minimum required CPU (affects
233                            instruction selection, may crash on older CPUs)
234   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
235   --enable-cross-compile   assume a cross-compiler is used
236   --sysroot=PATH           root of cross-build tree
237   --sysinclude=PATH        location of cross-build system headers
238   --target-os=OS           compiler targets OS [$target_os]
239   --target-exec=CMD        command to run executables on target
240   --target-path=DIR        path to view of build directory on target
241   --target-samples=DIR     path to samples directory on target
242   --toolchain=NAME         set tool defaults according to NAME
243   --nm=NM                  use nm tool
244   --ar=AR                  use archive tool AR [$ar_default]
245   --as=AS                  use assembler AS [$as_default]
246   --cc=CC                  use C compiler CC [$cc_default]
247   --objcc=OCC              use ObjC compiler OCC [$cc_default]
248   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
249   --ld=LD                  use linker LD
250   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
251   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
252   --host-cc=HOSTCC         use host C compiler HOSTCC
253   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
254   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
255   --host-ld=HOSTLD         use host linker HOSTLD
256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
257   --host-libs=HLIBS        use libs HLIBS when linking for host
258   --host-os=OS             compiler host OS [$target_os]
259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
260   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
262   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
264   --extra-version=STRING   version string suffix []
265   --optflags=OPTFLAGS      override optimization-related compiler flags
266   --build-suffix=SUFFIX    library name suffix []
267   --enable-pic             build position-independent code
268   --enable-thumb           compile for Thumb instruction set
269   --enable-lto             use link-time optimization
270   --env="ENV=override"     override the environment variables
271
272 Advanced options (experts only):
273   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
274   --custom-allocator=NAME  use a supported custom allocator
275   --disable-symver         disable symbol versioning
276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
277   --disable-safe-bitstream-reader
278                            disable buffer boundary checking in bitreaders
279                            (faster, but may crash)
280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
281   --enable-sram            allow use of on-chip SRAM
282
283 Optimization options (experts only):
284   --disable-asm            disable all assembly optimizations
285   --disable-altivec        disable AltiVec optimizations
286   --disable-vsx            disable VSX optimizations
287   --disable-power8         disable POWER8 optimizations
288   --disable-amd3dnow       disable 3DNow! optimizations
289   --disable-amd3dnowext    disable 3DNow! extended optimizations
290   --disable-mmx            disable MMX optimizations
291   --disable-mmxext         disable MMXEXT optimizations
292   --disable-sse            disable SSE optimizations
293   --disable-sse2           disable SSE2 optimizations
294   --disable-sse3           disable SSE3 optimizations
295   --disable-ssse3          disable SSSE3 optimizations
296   --disable-sse4           disable SSE4 optimizations
297   --disable-sse42          disable SSE4.2 optimizations
298   --disable-avx            disable AVX optimizations
299   --disable-xop            disable XOP optimizations
300   --disable-fma3           disable FMA3 optimizations
301   --disable-fma4           disable FMA4 optimizations
302   --disable-avx2           disable AVX2 optimizations
303   --disable-armv5te        disable armv5te optimizations
304   --disable-armv6          disable armv6 optimizations
305   --disable-armv6t2        disable armv6t2 optimizations
306   --disable-vfp            disable VFP optimizations
307   --disable-neon           disable NEON optimizations
308   --disable-inline-asm     disable use of inline assembly
309   --disable-yasm           disable use of nasm/yasm assembly
310
311 Developer options (useful when working on Libav itself):
312   --disable-debug          disable debugging symbols
313   --enable-debug=LEVEL     set the debug level [$debuglevel]
314   --disable-optimizations  disable compiler optimizations
315   --enable-extra-warnings  enable more compiler warnings
316   --samples=PATH           location of test samples for FATE, if not set use
317                            \$LIBAV_SAMPLES at make invocation time.
318   --enable-neon-clobber-test check NEON registers for clobbering (should be
319                            used only for debugging purposes)
320   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
321                            should be used only for debugging purposes)
322   --enable-random          randomly enable/disable components
323   --disable-random
324   --enable-random=LIST     randomly enable/disable specific components or
325   --disable-random=LIST    component groups. LIST is a comma-separated list
326                            of NAME[:PROB] entries where NAME is a component
327                            (group) and PROB the probability associated with
328                            NAME (default 0.5).
329   --random-seed=VALUE      seed value for --enable/disable-random
330   --disable-valgrind-backtrace do not print a backtrace under Valgrind
331                            (only applies to --disable-optimizations builds)
332
333 NOTE: Object files are built at the place where configure is launched.
334 EOF
335   exit 0
336 }
337
338 quotes='""'
339
340 log(){
341     echo "$@" >> $logfile
342 }
343
344 log_file(){
345     log BEGIN $1
346     i=1
347     while read line; do
348         printf '%5s   %s\n' "${i}" "${line}"
349         i=$(($i+1))
350     done < $1 >> $logfile
351     log END $1
352 }
353
354 echolog(){
355     log "$@"
356     echo "$@"
357 }
358
359 warn(){
360     log "WARNING: $*"
361     WARNINGS="${WARNINGS}WARNING: $*\n"
362 }
363
364 die(){
365     echolog "$@"
366     cat <<EOF
367
368 If you think configure made a mistake, make sure you are using the latest
369 version from Git.  If the latest version fails, report the problem to the
370 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
371 EOF
372     if disabled logging; then
373         cat <<EOF
374 Rerun configure with logging enabled (do not use --disable-logging), and
375 include the log this produces with your report.
376 EOF
377     else
378         cat <<EOF
379 Include the log file "$logfile" produced by configure as this will help
380 solving the problem.
381 EOF
382     fi
383     exit 1
384 }
385
386 # Avoid locale weirdness, besides we really just want to translate ASCII.
387 toupper(){
388     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
389 }
390
391 tolower(){
392     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
393 }
394
395 c_escape(){
396     echo "$*" | sed 's/["\\]/\\\0/g'
397 }
398
399 sh_quote(){
400     v=$(echo "$1" | sed "s/'/'\\\\''/g")
401     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
402     echo "$v"
403 }
404
405 cleanws(){
406     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
407 }
408
409 filter(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) echo $v ;; esac"
414     done
415 }
416
417 filter_out(){
418     pat=$1
419     shift
420     for v; do
421         eval "case $v in $pat) ;; *) echo $v ;; esac"
422     done
423 }
424
425 map(){
426     m=$1
427     shift
428     for v; do eval $m; done
429 }
430
431 add_suffix(){
432     suffix=$1
433     shift
434     for v; do echo ${v}${suffix}; done
435 }
436
437 set_all(){
438     value=$1
439     shift
440     for var in $*; do
441         eval $var=$value
442     done
443 }
444
445 set_weak(){
446     value=$1
447     shift
448     for var; do
449         eval : \${$var:=$value}
450     done
451 }
452
453 sanitize_var_name(){
454     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
455 }
456
457 set_safe(){
458     var=$1
459     shift
460     eval $(sanitize_var_name "$var")='$*'
461 }
462
463 get_safe(){
464     eval echo \$$(sanitize_var_name "$1")
465 }
466
467 pushvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:=0}
470         eval ${pvar}_${level}="\$$pvar"
471         eval ${pvar}_level=$(($level+1))
472     done
473 }
474
475 popvar(){
476     for pvar in $*; do
477         eval level=\${${pvar}_level:-0}
478         test $level = 0 && continue
479         eval level=$(($level-1))
480         eval $pvar="\${${pvar}_${level}}"
481         eval ${pvar}_level=$level
482         eval unset ${pvar}_${level}
483     done
484 }
485
486 enable(){
487     set_all yes $*
488 }
489
490 disable(){
491     set_all no $*
492 }
493
494 enable_weak(){
495     set_weak yes $*
496 }
497
498 disable_weak(){
499     set_weak no $*
500 }
501
502 enable_safe(){
503     for var; do
504         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
505     done
506 }
507
508 disable_safe(){
509     for var; do
510         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
511     done
512 }
513
514 do_enable_deep(){
515     for var; do
516         enabled $var && continue
517         eval sel="\$${var}_select"
518         eval sgs="\$${var}_suggest"
519         pushvar var sgs
520         enable_deep $sel
521         popvar sgs
522         enable_deep_weak $sgs
523         popvar var
524     done
525 }
526
527 enable_deep(){
528     do_enable_deep $*
529     enable $*
530 }
531
532 enable_deep_weak(){
533     for var; do
534         disabled $var && continue
535         pushvar var
536         do_enable_deep $var
537         popvar var
538         enable_weak $var
539     done
540 }
541
542 enabled(){
543     test "${1#!}" = "$1" && op== || op=!=
544     eval test "x\$${1#!}" $op "xyes"
545 }
546
547 disabled(){
548     test "${1#!}" = "$1" && op== || op=!=
549     eval test "x\$${1#!}" $op "xno"
550 }
551
552 enabled_all(){
553     for opt; do
554         enabled $opt || return 1
555     done
556 }
557
558 disabled_all(){
559     for opt; do
560         disabled $opt || return 1
561     done
562 }
563
564 enabled_any(){
565     for opt; do
566         enabled $opt && return 0
567     done
568 }
569
570 disabled_any(){
571     for opt; do
572         disabled $opt && return 0
573     done
574     return 1
575 }
576
577 set_default(){
578     for opt; do
579         eval : \${$opt:=\$${opt}_default}
580     done
581 }
582
583 is_in(){
584     value=$1
585     shift
586     for var in $*; do
587         [ $var = $value ] && return 0
588     done
589     return 1
590 }
591
592 do_check_deps(){
593     for cfg; do
594         cfg="${cfg#!}"
595         enabled ${cfg}_checking && die "Circular dependency for $cfg."
596         disabled ${cfg}_checking && continue
597         enable ${cfg}_checking
598         append allopts $cfg
599
600         eval dep_all="\$${cfg}_deps"
601         eval dep_any="\$${cfg}_deps_any"
602         eval dep_sel="\$${cfg}_select"
603         eval dep_sgs="\$${cfg}_suggest"
604         eval dep_ifa="\$${cfg}_if"
605         eval dep_ifn="\$${cfg}_if_any"
606
607         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
608         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
609         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
610
611         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
612         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
613         enabled_all  $dep_all || disable $cfg
614         enabled_any  $dep_any || disable $cfg
615         disabled_any $dep_sel && disable $cfg
616
617         if enabled $cfg; then
618             enable_deep $dep_sel
619             enable_deep_weak $dep_sgs
620         fi
621
622         disable ${cfg}_checking
623     done
624 }
625
626 check_deps(){
627     unset allopts
628
629     do_check_deps "$@"
630
631     for cfg in $allopts; do
632         enabled $cfg || continue
633         eval dep_extralibs="\$${cfg}_extralibs"
634         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
635     done
636 }
637
638 print_config(){
639     pfx=$1
640     files=$2
641     shift 2
642     map 'eval echo "$v \${$v:-no}"' "$@" |
643     awk "BEGIN { split(\"$files\", files) }
644         {
645             c = \"$pfx\" toupper(\$1);
646             v = \$2;
647             sub(/yes/, 1, v);
648             sub(/no/,  0, v);
649             for (f in files) {
650                 file = files[f];
651                 if (file ~ /\\.h\$/) {
652                     printf(\"#define %s %d\\n\", c, v) >>file;
653                 } else if (file ~ /\\.asm\$/) {
654                     printf(\"%%define %s %d\\n\", c, v) >>file;
655                 } else if (file ~ /\\.mak\$/) {
656                     n = -v ? \"\" : \"!\";
657                     printf(\"%s%s=yes\\n\", n, c) >>file;
658                 }
659             }
660         }"
661 }
662
663 print_enabled(){
664     suf=$1
665     shift
666     for v; do
667         enabled $v && printf "%s\n" ${v%$suf};
668     done
669 }
670
671 append(){
672     var=$1
673     shift
674     eval "$var=\"\$$var $*\""
675 }
676
677 prepend(){
678     var=$1
679     shift
680     eval "$var=\"$* \$$var\""
681 }
682
683 unique(){
684     var=$1
685     uniq_list=""
686     for tok in $(eval echo \$$var); do
687         uniq_list="$(filter_out $tok $uniq_list) $tok"
688     done
689     eval "$var=\"${uniq_list}\""
690 }
691
692 add_cppflags(){
693     append CPPFLAGS "$@"
694 }
695
696 add_cflags(){
697     append CFLAGS $($cflags_filter "$@")
698 }
699
700 add_asflags(){
701     append ASFLAGS $($asflags_filter "$@")
702 }
703
704 add_objcflags(){
705     append OBJCFLAGS $($objcflags_filter "$@")
706 }
707
708 add_ldflags(){
709     append LDFLAGS $($ldflags_filter "$@")
710 }
711
712 add_ldexeflags(){
713     append LDEXEFLAGS $($ldflags_filter "$@")
714 }
715
716 add_stripflags(){
717     append STRIPFLAGS "$@"
718 }
719
720 add_extralibs(){
721     prepend extralibs $($ldflags_filter "$@")
722 }
723
724 add_host_cppflags(){
725     append host_cppflags "$@"
726 }
727
728 add_host_cflags(){
729     append host_cflags $($host_cflags_filter "$@")
730 }
731
732 add_host_ldflags(){
733     append host_ldflags $($host_ldflags_filter "$@")
734 }
735
736 add_compat(){
737     append compat_objs $1
738     shift
739     map 'add_cppflags -D$v' "$@"
740 }
741
742 check_cmd(){
743     log "$@"
744     "$@" >> $logfile 2>&1
745 }
746
747 cc_o(){
748     eval printf '%s\\n' $CC_O
749 }
750
751 cc_e(){
752     eval printf '%s\\n' $CC_E
753 }
754
755 check_cc(){
756     log check_cc "$@"
757     cat > $TMPC
758     log_file $TMPC
759     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
760 }
761
762 check_objcc(){
763     log check_objcc "$@"
764     cat > $TMPC
765     log_file $TMPC
766     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
767 }
768
769 check_cpp(){
770     log check_cpp "$@"
771     cat > $TMPC
772     log_file $TMPC
773     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
774 }
775
776 as_o(){
777     eval printf '%s\\n' $AS_O
778 }
779
780 check_as(){
781     log check_as "$@"
782     cat > $TMPS
783     log_file $TMPS
784     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
785 }
786
787 check_inline_asm(){
788     log check_inline_asm "$@"
789     name="$1"
790     code="$2"
791     shift 2
792     disable $name
793     check_cc "$@" <<EOF && enable $name
794 void foo(void){ __asm__ volatile($code); }
795 EOF
796 }
797
798 check_insn(){
799     log check_insn "$@"
800     check_inline_asm ${1}_inline "\"$2\""
801     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
802 }
803
804 check_yasm(){
805     log check_yasm "$@"
806     echo "$1" > $TMPS
807     log_file $TMPS
808     shift 1
809     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
810 }
811
812 ld_o(){
813     eval printf '%s\\n' $LD_O
814 }
815
816 check_ld(){
817     log check_ld "$@"
818     flags=$(filter_out '-l*' "$@")
819     libs=$(filter '-l*' "$@")
820     check_cc $($cflags_filter $flags) || return
821     flags=$($ldflags_filter $flags)
822     libs=$($ldflags_filter $libs)
823     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
824 }
825
826 print_include(){
827     hdr=$1
828     test "${hdr%.h}" = "${hdr}" &&
829         echo "#include $hdr"    ||
830         echo "#include <$hdr>"
831 }
832
833 check_code(){
834     log check_code "$@"
835     check=$1
836     headers=$2
837     code=$3
838     shift 3
839     {
840         for hdr in $headers; do
841             print_include $hdr
842         done
843         echo "int main(void) { $code; return 0; }"
844     } | check_$check "$@"
845 }
846
847 check_cppflags(){
848     log check_cppflags "$@"
849     check_cc "$@" <<EOF && append CPPFLAGS "$@"
850 int x;
851 EOF
852 }
853
854 test_cflags(){
855     log test_cflags "$@"
856     set -- $($cflags_filter "$@")
857     check_cc "$@" <<EOF
858 int x;
859 EOF
860 }
861
862 check_cflags(){
863     log check_cflags "$@"
864     test_cflags "$@" && add_cflags "$@"
865 }
866
867 test_objcflags(){
868     log test_cflags "$@"
869     set -- $($cflags_filter "$@")
870     check_objcc "$@" <<EOF
871 int x;
872 EOF
873 }
874
875 check_objcflags(){
876     log check_cflags "$@"
877     test_objcflags "$@" && add_objcflags "$@"
878 }
879
880 test_ldflags(){
881     log test_ldflags "$@"
882     check_ld "$@" <<EOF
883 int main(void){ return 0; }
884 EOF
885 }
886
887 check_ldflags(){
888     log check_ldflags "$@"
889     test_ldflags "$@" && add_ldflags "$@"
890 }
891
892 test_stripflags(){
893     log test_stripflags "$@"
894     # call check_cc to get a fresh TMPO
895     check_cc <<EOF
896 int main(void) { return 0; }
897 EOF
898     check_cmd $strip $STRIPFLAGS "$@" $TMPO
899 }
900
901 check_stripflags(){
902     log check_stripflags "$@"
903     test_stripflags "$@" && add_stripflags "$@"
904 }
905
906 check_header(){
907     log check_header "$@"
908     header=$1
909     shift
910     disable_safe $header
911     check_cpp "$@" <<EOF && enable_safe $header
912 #include <$header>
913 int x;
914 EOF
915 }
916
917 check_func(){
918     log check_func "$@"
919     func=$1
920     shift
921     disable $func
922     check_ld "$@" <<EOF && enable $func
923 extern int $func();
924 int main(void){ $func(); }
925 EOF
926 }
927
928 check_mathfunc(){
929     log check_mathfunc "$@"
930     func=$1
931     narg=$2
932     shift 2
933     test $narg = 2 && args="f, g" || args="f"
934     disable $func
935     check_ld "$@" <<EOF && enable $func
936 #include <math.h>
937 float foo(float f, float g) { return $func($args); }
938 int main(void){ return 0; }
939 EOF
940 }
941
942 check_func_headers(){
943     log check_func_headers "$@"
944     headers=$1
945     funcs=$2
946     shift 2
947     {
948         for hdr in $headers; do
949             print_include $hdr
950         done
951         for func in $funcs; do
952             echo "long check_$func(void) { return (long) $func; }"
953         done
954         echo "int main(void) { return 0; }"
955     } | check_ld "$@" && enable $funcs && enable_safe $headers
956 }
957
958 check_cpp_condition(){
959     log check_cpp_condition "$@"
960     header=$1
961     condition=$2
962     shift 2
963     check_cpp "$@" <<EOF
964 #include <$header>
965 #if !($condition)
966 #error "unsatisfied condition: $condition"
967 #endif
968 EOF
969 }
970
971 check_lib(){
972     log check_lib "$@"
973     header="$1"
974     func="$2"
975     shift 2
976     check_header $header && check_func $func "$@" && add_extralibs "$@"
977 }
978
979 check_lib2(){
980     log check_lib2 "$@"
981     headers="$1"
982     funcs="$2"
983     shift 2
984     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
985 }
986
987 check_pkg_config(){
988     log check_pkg_config "$@"
989     pkg="$1"
990     headers="$2"
991     funcs="$3"
992     shift 3
993     check_cmd $pkg_config --exists --print-errors $pkg || return
994     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
995     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
996     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
997         set_safe "${pkg}_cflags" $pkg_cflags   &&
998         set_safe "${pkg}_libs"   $pkg_libs
999 }
1000
1001 check_exec(){
1002     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1003 }
1004
1005 check_exec_crash(){
1006     code=$(cat)
1007
1008     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1009     # are safe but may not be available everywhere.  Thus we use
1010     # raise(SIGTERM) instead.  The check is run in a subshell so we
1011     # can redirect the "Terminated" message from the shell.  SIGBUS
1012     # is not defined by standard C so it is used conditionally.
1013
1014     (check_exec "$@") >> $logfile 2>&1 <<EOF
1015 #include <signal.h>
1016 static void sighandler(int sig){
1017     raise(SIGTERM);
1018 }
1019 int foo(void){
1020     $code
1021 }
1022 int (*func_ptr)(void) = foo;
1023 int main(void){
1024     signal(SIGILL, sighandler);
1025     signal(SIGFPE, sighandler);
1026     signal(SIGSEGV, sighandler);
1027 #ifdef SIGBUS
1028     signal(SIGBUS, sighandler);
1029 #endif
1030     return func_ptr();
1031 }
1032 EOF
1033 }
1034
1035 check_type(){
1036     log check_type "$@"
1037     headers=$1
1038     type=$2
1039     shift 2
1040     disable_safe "$type"
1041     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1042 }
1043
1044 check_struct(){
1045     log check_struct "$@"
1046     headers=$1
1047     struct=$2
1048     member=$3
1049     shift 3
1050     disable_safe "${struct}_${member}"
1051     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1052         enable_safe "${struct}_${member}"
1053 }
1054
1055 check_builtin(){
1056     log check_builtin "$@"
1057     name=$1
1058     headers=$2
1059     builtin=$3
1060     shift 3
1061     disable "$name"
1062     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1063 }
1064
1065 check_compile_assert(){
1066     log check_compile_assert "$@"
1067     name=$1
1068     headers=$2
1069     condition=$3
1070     shift 3
1071     disable "$name"
1072     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1073 }
1074
1075 require(){
1076     name="$1"
1077     header="$2"
1078     func="$3"
1079     shift 3
1080     check_lib $header $func "$@" || die "ERROR: $name not found"
1081 }
1082
1083 require2(){
1084     name="$1"
1085     headers="$2"
1086     func="$3"
1087     shift 3
1088     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1089 }
1090
1091 require_pkg_config(){
1092     pkg="$1"
1093     check_pkg_config "$@" || die "ERROR: $pkg not found"
1094     add_cflags    $(get_safe "${pkg}_cflags")
1095     add_extralibs $(get_safe "${pkg}_libs")
1096 }
1097
1098 hostcc_e(){
1099     eval printf '%s\\n' $HOSTCC_E
1100 }
1101
1102 hostcc_o(){
1103     eval printf '%s\\n' $HOSTCC_O
1104 }
1105
1106 check_host_cc(){
1107     log check_host_cc "$@"
1108     cat > $TMPC
1109     log_file $TMPC
1110     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1111 }
1112
1113 check_host_cpp(){
1114     log check_host_cpp "$@"
1115     cat > $TMPC
1116     log_file $TMPC
1117     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1118 }
1119
1120 check_host_cppflags(){
1121     log check_host_cppflags "$@"
1122     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1123 int x;
1124 EOF
1125 }
1126
1127 check_host_cflags(){
1128     log check_host_cflags "$@"
1129     set -- $($host_cflags_filter "$@")
1130     check_host_cc "$@" <<EOF && append host_cflags "$@"
1131 int x;
1132 EOF
1133 }
1134
1135 check_host_cpp_condition(){
1136     log check_host_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_host_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 apply(){
1149     file=$1
1150     shift
1151     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1152 }
1153
1154 cp_if_changed(){
1155     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1156     mkdir -p "$(dirname $2)"
1157     $cp_f "$1" "$2"
1158 }
1159
1160 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1161 # system-dependent things.
1162
1163 AVCODEC_COMPONENTS="
1164     bsfs
1165     decoders
1166     encoders
1167     hwaccels
1168     parsers
1169 "
1170
1171 AVDEVICE_COMPONENTS="
1172     indevs
1173     outdevs
1174 "
1175 AVFILTER_COMPONENTS="
1176     filters
1177 "
1178 AVFORMAT_COMPONENTS="
1179     demuxers
1180     muxers
1181     protocols
1182 "
1183
1184 AVRESAMPLE_COMPONENTS=""
1185 AVUTIL_COMPONENTS=""
1186
1187 COMPONENT_LIST="
1188     $AVCODEC_COMPONENTS
1189     $AVDEVICE_COMPONENTS
1190     $AVFILTER_COMPONENTS
1191     $AVFORMAT_COMPONENTS
1192     $AVRESAMPLE_COMPONENTS
1193     $AVUTIL_COMPONENTS
1194 "
1195
1196 EXAMPLE_LIST="
1197     avcodec_example
1198     filter_audio_example
1199     metadata_example
1200     output_example
1201     qsvdec_example
1202     transcode_aac_example
1203 "
1204
1205 EXTERNAL_LIBRARY_LIST="
1206     avisynth
1207     bzlib
1208     frei0r
1209     gnutls
1210     libbs2b
1211     libcdio
1212     libdc1394
1213     libdcadec
1214     libfaac
1215     libfdk_aac
1216     libfontconfig
1217     libfreetype
1218     libgsm
1219     libilbc
1220     libkvazaar
1221     libmfx
1222     libmp3lame
1223     libopencore_amrnb
1224     libopencore_amrwb
1225     libopencv
1226     libopenh264
1227     libopenjpeg
1228     libopus
1229     libpulse
1230     librtmp
1231     libschroedinger
1232     libsnappy
1233     libspeex
1234     libtheora
1235     libtwolame
1236     libvo_aacenc
1237     libvo_amrwbenc
1238     libvorbis
1239     libvpx
1240     libwavpack
1241     libwebp
1242     libx264
1243     libx265
1244     libxavs
1245     libxcb
1246     libxcb_shm
1247     libxcb_xfixes
1248     libxvid
1249     mmal
1250     nvenc
1251     openssl
1252     x11grab
1253     zlib
1254 "
1255
1256 FEATURE_LIST="
1257     gray
1258     hardcoded_tables
1259     runtime_cpudetect
1260     safe_bitstream_reader
1261     shared
1262     small
1263     sram
1264     static
1265     swscale_alpha
1266 "
1267
1268 HWACCEL_LIST="
1269     d3d11va
1270     dxva2
1271     vaapi
1272     vda
1273     vdpau
1274 "
1275
1276 LIBRARY_LIST="
1277     avcodec
1278     avdevice
1279     avfilter
1280     avformat
1281     avresample
1282     avutil
1283     swscale
1284 "
1285
1286 LICENSE_LIST="
1287     gpl
1288     nonfree
1289     version3
1290 "
1291
1292 PROGRAM_LIST="
1293     avconv
1294     avplay
1295     avprobe
1296 "
1297
1298 SUBSYSTEM_LIST="
1299     dct
1300     doc
1301     error_resilience
1302     faan
1303     fft
1304     lsp
1305     lzo
1306     mdct
1307     network
1308     rdft
1309 "
1310
1311 CONFIG_LIST="
1312     $COMPONENT_LIST
1313     $EXAMPLE_LIST
1314     $EXTERNAL_LIBRARY_LIST
1315     $FEATURE_LIST
1316     $HWACCEL_LIST
1317     $LICENSE_LIST
1318     $LIBRARY_LIST
1319     $PROGRAM_LIST
1320     $SUBSYSTEM_LIST
1321     memalign_hack
1322     neon_clobber_test
1323     pic
1324     pod2man
1325     texi2html
1326     thumb
1327     valgrind_backtrace
1328     xmm_clobber_test
1329 "
1330
1331 THREADS_LIST="
1332     pthreads
1333     w32threads
1334 "
1335
1336 ATOMICS_LIST="
1337     atomics_gcc
1338     atomics_suncc
1339     atomics_win32
1340 "
1341
1342 ARCH_LIST="
1343     aarch64
1344     alpha
1345     arm
1346     avr32
1347     avr32_ap
1348     avr32_uc
1349     bfin
1350     ia64
1351     m68k
1352     mips
1353     mips64
1354     parisc
1355     ppc
1356     ppc64
1357     s390
1358     sh4
1359     sparc
1360     sparc64
1361     tilegx
1362     tilepro
1363     tomi
1364     x86
1365     x86_32
1366     x86_64
1367 "
1368
1369 ARCH_EXT_LIST_ARM="
1370     armv5te
1371     armv6
1372     armv6t2
1373     armv8
1374     neon
1375     vfp
1376     vfpv3
1377 "
1378
1379 ARCH_EXT_LIST_X86_SIMD="
1380     amd3dnow
1381     amd3dnowext
1382     avx
1383     avx2
1384     fma3
1385     fma4
1386     mmx
1387     mmxext
1388     sse
1389     sse2
1390     sse3
1391     sse4
1392     sse42
1393     ssse3
1394     xop
1395 "
1396
1397 ARCH_EXT_LIST_PPC="
1398     altivec
1399     dcbzl
1400     ldbrx
1401     power8
1402     ppc4xx
1403     vsx
1404 "
1405
1406 ARCH_EXT_LIST_X86="
1407     $ARCH_EXT_LIST_X86_SIMD
1408     cpunop
1409     i686
1410 "
1411
1412 ARCH_EXT_LIST_MIPS="
1413     loongson
1414     mips32r1
1415     mips64r1
1416     mips32r2
1417     mips64r2
1418     mips32r6
1419     mips64r6
1420 "
1421
1422 ARCH_EXT_LIST="
1423     $ARCH_EXT_LIST_ARM
1424     $ARCH_EXT_LIST_MIPS
1425     $ARCH_EXT_LIST_PPC
1426     $ARCH_EXT_LIST_X86
1427     vis
1428 "
1429
1430 ARCH_FEATURES="
1431     aligned_stack
1432     fast_64bit
1433     fast_clz
1434     fast_cmov
1435     local_aligned_8
1436     local_aligned_16
1437     simd_align_16
1438 "
1439
1440 BUILTIN_LIST="
1441     atomic_cas_ptr
1442     machine_rw_barrier
1443     MemoryBarrier
1444     mm_empty
1445     rdtsc
1446     sync_val_compare_and_swap
1447 "
1448 HAVE_LIST_CMDLINE="
1449     inline_asm
1450     symver
1451     yasm
1452 "
1453
1454 HAVE_LIST_PUB="
1455     bigendian
1456     fast_unaligned
1457 "
1458
1459 HEADERS_LIST="
1460     AVFoundation_AVFoundation_h
1461     alsa_asoundlib_h
1462     altivec_h
1463     arpa_inet_h
1464     cdio_paranoia_h
1465     cdio_paranoia_paranoia_h
1466     dev_bktr_ioctl_bt848_h
1467     dev_bktr_ioctl_meteor_h
1468     dev_ic_bt8xx_h
1469     dev_video_bktr_ioctl_bt848_h
1470     dev_video_meteor_ioctl_meteor_h
1471     direct_h
1472     dlfcn_h
1473     d3d11_h
1474     dxva_h
1475     gsm_h
1476     io_h
1477     mach_mach_time_h
1478     machine_ioctl_bt848_h
1479     machine_ioctl_meteor_h
1480     malloc_h
1481     poll_h
1482     sndio_h
1483     soundcard_h
1484     sys_mman_h
1485     sys_param_h
1486     sys_resource_h
1487     sys_select_h
1488     sys_soundcard_h
1489     sys_time_h
1490     sys_un_h
1491     sys_videoio_h
1492     unistd_h
1493     valgrind_valgrind_h
1494     windows_h
1495     winsock2_h
1496 "
1497
1498 INTRINSICS_LIST="
1499     intrinsics_neon
1500 "
1501
1502 MATH_FUNCS="
1503     atanf
1504     atan2f
1505     cbrtf
1506     cosf
1507     exp2
1508     exp2f
1509     expf
1510     isinf
1511     isnan
1512     ldexpf
1513     llrint
1514     llrintf
1515     log2
1516     log2f
1517     log10f
1518     lrint
1519     lrintf
1520     powf
1521     rint
1522     round
1523     roundf
1524     sinf
1525     trunc
1526     truncf
1527 "
1528
1529 SYSTEM_FUNCS="
1530     aligned_malloc
1531     clock_gettime
1532     closesocket
1533     CommandLineToArgvW
1534     CoTaskMemFree
1535     CryptGenRandom
1536     dlopen
1537     fcntl
1538     flt_lim
1539     fork
1540     getaddrinfo
1541     gethrtime
1542     getopt
1543     GetProcessAffinityMask
1544     GetProcessMemoryInfo
1545     GetProcessTimes
1546     getrusage
1547     GetSystemTimeAsFileTime
1548     gettimeofday
1549     gmtime_r
1550     inet_aton
1551     isatty
1552     jack_port_get_latency_range
1553     LoadLibrary
1554     localtime_r
1555     mach_absolute_time
1556     MapViewOfFile
1557     memalign
1558     mkstemp
1559     mmap
1560     mprotect
1561     nanosleep
1562     posix_memalign
1563     sched_getaffinity
1564     SetConsoleTextAttribute
1565     setmode
1566     setrlimit
1567     Sleep
1568     strerror_r
1569     sysconf
1570     sysctl
1571     usleep
1572     VirtualAlloc
1573 "
1574
1575 TOOLCHAIN_FEATURES="
1576     as_dn_directive
1577     as_func
1578     as_object_arch
1579     asm_mod_q
1580     attribute_may_alias
1581     attribute_packed
1582     ebp_available
1583     ebx_available
1584     gnu_as
1585     ibm_asm
1586     inline_asm_labels
1587     pragma_deprecated
1588     symver_asm_label
1589     symver_gnu_asm
1590     vfp_args
1591     xform_asm
1592     xmm_clobbers
1593 "
1594
1595 TYPES_LIST="
1596     CONDITION_VARIABLE_Ptr
1597     socklen_t
1598     struct_addrinfo
1599     struct_group_source_req
1600     struct_ip_mreq_source
1601     struct_ipv6_mreq
1602     struct_pollfd
1603     struct_rusage_ru_maxrss
1604     struct_sockaddr_in6
1605     struct_sockaddr_sa_len
1606     struct_sockaddr_storage
1607     struct_v4l2_frmivalenum_discrete
1608 "
1609
1610 HAVE_LIST="
1611     $ARCH_EXT_LIST
1612     $(add_suffix _external $ARCH_EXT_LIST)
1613     $(add_suffix _inline   $ARCH_EXT_LIST)
1614     $ARCH_FEATURES
1615     $ATOMICS_LIST
1616     $BUILTIN_LIST
1617     $HAVE_LIST_CMDLINE
1618     $HAVE_LIST_PUB
1619     $HEADERS_LIST
1620     $INTRINSICS_LIST
1621     $MATH_FUNCS
1622     $SYSTEM_FUNCS
1623     $THREADS_LIST
1624     $TOOLCHAIN_FEATURES
1625     $TYPES_LIST
1626     atomics_native
1627     dos_paths
1628     dxva2_lib
1629     libc_msvcrt
1630     libdc1394_1
1631     libdc1394_2
1632     sdl
1633     section_data_rel_ro
1634     threads
1635     vaapi_x11
1636     vdpau_x11
1637     xlib
1638 "
1639
1640 # options emitted with CONFIG_ prefix but not available on the command line
1641 CONFIG_EXTRA="
1642     aandcttables
1643     ac3dsp
1644     audio_frame_queue
1645     audiodsp
1646     blockdsp
1647     bswapdsp
1648     cabac
1649     dvprofile
1650     faandct
1651     faanidct
1652     fdctdsp
1653     flacdsp
1654     fmtconvert
1655     g722dsp
1656     gcrypt
1657     gmp
1658     golomb
1659     gplv3
1660     h263dsp
1661     h264chroma
1662     h264dsp
1663     h264pred
1664     h264qpel
1665     hpeldsp
1666     huffman
1667     huffyuvdsp
1668     huffyuvencdsp
1669     idctdsp
1670     iirfilter
1671     imdct15
1672     intrax8
1673     ividsp
1674     jpegtables
1675     libx262
1676     lgplv3
1677     lpc
1678     lzf
1679     me_cmp
1680     mpeg_er
1681     mpegaudio
1682     mpegaudiodsp
1683     mpegvideo
1684     mpegvideoenc
1685     mss34dsp
1686     pixblockdsp
1687     qpeldsp
1688     qsv
1689     qsvdec
1690     qsvenc
1691     rangecoder
1692     riffdec
1693     riffenc
1694     rtpdec
1695     rtpenc_chain
1696     rv34dsp
1697     sinewin
1698     snappy
1699     startcode
1700     texturedsp
1701     texturedspenc
1702     tpeldsp
1703     videodsp
1704     vp3dsp
1705     vp56dsp
1706     vp8dsp
1707     wma_freqs
1708     wmv2dsp
1709 "
1710
1711 CMDLINE_SELECT="
1712     $ARCH_EXT_LIST
1713     $CONFIG_LIST
1714     $HAVE_LIST_CMDLINE
1715     $THREADS_LIST
1716     asm
1717     cross_compile
1718     debug
1719     extra_warnings
1720     logging
1721     lto
1722     optimizations
1723     rpath
1724 "
1725
1726 PATHS_LIST="
1727     bindir
1728     datadir
1729     docdir
1730     incdir
1731     libdir
1732     mandir
1733     prefix
1734     shlibdir
1735 "
1736
1737 CMDLINE_SET="
1738     $PATHS_LIST
1739     ar
1740     arch
1741     as
1742     build_suffix
1743     cc
1744     objcc
1745     cpu
1746     cross_prefix
1747     custom_allocator
1748     dep_cc
1749     env
1750     extra_version
1751     host_cc
1752     host_cflags
1753     host_ld
1754     host_ldflags
1755     host_libs
1756     host_os
1757     ld
1758     logfile
1759     malloc_prefix
1760     nm
1761     optflags
1762     pkg_config
1763     pkg_config_flags
1764     random_seed
1765     samples
1766     sysinclude
1767     sysroot
1768     target_exec
1769     target_os
1770     target_path
1771     target_samples
1772     toolchain
1773 "
1774
1775 CMDLINE_APPEND="
1776     extra_cflags
1777     extra_objcflags
1778     host_cppflags
1779 "
1780
1781 # code dependency declarations
1782
1783 # architecture extensions
1784
1785 armv5te_deps="arm"
1786 armv6_deps="arm"
1787 armv6t2_deps="arm"
1788 armv8_deps="aarch64"
1789 neon_deps_any="aarch64 arm"
1790 intrinsics_neon_deps="neon"
1791 vfp_deps_any="aarch64 arm"
1792 vfpv3_deps="vfp"
1793
1794 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1795
1796 altivec_deps="ppc"
1797 ppc4xx_deps="ppc"
1798 vsx_deps="altivec"
1799 power8_deps="vsx"
1800
1801 cpunop_deps="i686"
1802 x86_64_select="i686"
1803 x86_64_suggest="fast_cmov"
1804
1805 amd3dnow_deps="mmx"
1806 amd3dnowext_deps="amd3dnow"
1807 i686_deps="x86"
1808 mmx_deps="x86"
1809 mmxext_deps="mmx"
1810 sse_deps="mmxext"
1811 sse2_deps="sse"
1812 sse3_deps="sse2"
1813 ssse3_deps="sse3"
1814 sse4_deps="ssse3"
1815 sse42_deps="sse4"
1816 avx_deps="sse42"
1817 xop_deps="avx"
1818 fma3_deps="avx"
1819 fma4_deps="avx"
1820 avx2_deps="avx"
1821
1822 mmx_external_deps="yasm"
1823 mmx_inline_deps="inline_asm"
1824 mmx_suggest="mmx_external mmx_inline"
1825
1826 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1827     eval dep=\$${ext}_deps
1828     eval ${ext}_external_deps='"${dep}_external"'
1829     eval ${ext}_inline_deps='"${dep}_inline"'
1830     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1831 done
1832
1833 aligned_stack_if_any="aarch64 ppc x86"
1834 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1835 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1836 fast_unaligned_if_any="aarch64 ppc x86"
1837 simd_align_16_if_any="altivec neon sse"
1838
1839 # system capabilities
1840 symver_if_any="symver_asm_label symver_gnu_asm"
1841 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1842
1843 # threading support
1844 atomics_gcc_if="sync_val_compare_and_swap"
1845 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1846 atomics_win32_if="MemoryBarrier"
1847 atomics_native_if_any="$ATOMICS_LIST"
1848 w32threads_deps="atomics_native"
1849 threads_if_any="$THREADS_LIST"
1850
1851 # subsystems
1852 dct_select="rdft"
1853 error_resilience_select="me_cmp"
1854 faandct_deps="faan fdctdsp"
1855 faanidct_deps="faan idctdsp"
1856 intrax8_select="error_resilience"
1857 mdct_select="fft"
1858 rdft_select="fft"
1859 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1860 mpeg_er_select="error_resilience"
1861 mpegaudio_select="mpegaudiodsp"
1862 mpegaudiodsp_select="dct"
1863 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1864 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1865 nvenc_deps_any="dlopen LoadLibrary"
1866 nvenc_extralibs='$ldl'
1867 qsvdec_select="qsv"
1868 qsvenc_select="qsv"
1869
1870 # decoders / encoders
1871 aac_decoder_select="imdct15 mdct sinewin"
1872 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1873 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1874 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1875 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1876 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1877 adpcm_g722_decoder_select="g722dsp"
1878 adpcm_g722_encoder_select="g722dsp"
1879 aic_decoder_select="golomb idctdsp"
1880 alac_encoder_select="lpc"
1881 als_decoder_select="bswapdsp"
1882 amrnb_decoder_select="lsp"
1883 amrwb_decoder_select="lsp"
1884 amv_decoder_select="sp5x_decoder"
1885 ape_decoder_select="bswapdsp"
1886 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1887 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1888 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1889 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1890 atrac1_decoder_select="mdct sinewin"
1891 atrac3_decoder_select="mdct"
1892 atrac3p_decoder_select="mdct sinewin"
1893 bink_decoder_select="blockdsp hpeldsp"
1894 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1895 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1896 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1897 cllc_decoder_select="bswapdsp"
1898 comfortnoise_encoder_select="lpc"
1899 cook_decoder_select="audiodsp mdct sinewin"
1900 cscd_decoder_select="lzo"
1901 cscd_decoder_suggest="zlib"
1902 dca_decoder_select="fmtconvert mdct"
1903 dds_decoder_select="texturedsp"
1904 dnxhd_decoder_select="blockdsp idctdsp"
1905 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1906 dvvideo_decoder_select="dvprofile idctdsp"
1907 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1908 dxa_decoder_deps="zlib"
1909 dxv_decoder_select="lzf texturedsp"
1910 eac3_decoder_select="ac3_decoder"
1911 eac3_encoder_select="ac3_encoder"
1912 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1913 eatgq_decoder_select="aandcttables idctdsp"
1914 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1915 exr_decoder_deps="zlib"
1916 ffv1_decoder_select="golomb rangecoder"
1917 ffv1_encoder_select="rangecoder"
1918 ffvhuff_decoder_select="huffyuv_decoder"
1919 ffvhuff_encoder_select="huffyuv_encoder"
1920 fic_decoder_select="golomb"
1921 flac_decoder_select="flacdsp golomb"
1922 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1923 flashsv_decoder_deps="zlib"
1924 flashsv_encoder_deps="zlib"
1925 flashsv2_decoder_deps="zlib"
1926 flv_decoder_select="h263_decoder"
1927 flv_encoder_select="h263_encoder"
1928 fourxm_decoder_select="blockdsp bswapdsp"
1929 fraps_decoder_select="bswapdsp huffman"
1930 g2m_decoder_deps="zlib"
1931 g2m_decoder_select="blockdsp idctdsp jpegtables"
1932 h261_decoder_select="mpeg_er mpegvideo"
1933 h261_encoder_select="aandcttables mpegvideoenc"
1934 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1935 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1936 h263i_decoder_select="h263_decoder"
1937 h263p_encoder_select="h263_encoder"
1938 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1939 h264_decoder_suggest="error_resilience"
1940 h264_nvenc_encoder_deps="nvenc"
1941 h264_qsv_decoder_deps="libmfx"
1942 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1943 h264_qsv_encoder_deps="libmfx"
1944 h264_qsv_encoder_select="qsvenc"
1945 hap_decoder_select="snappy texturedsp"
1946 hap_encoder_deps="libsnappy"
1947 hap_encoder_select="texturedspenc"
1948 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1949 hevc_nvenc_encoder_deps="nvenc"
1950 hevc_qsv_encoder_deps="libmfx"
1951 hevc_qsv_decoder_deps="libmfx"
1952 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1953 hevc_qsv_encoder_select="qsvenc"
1954 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1955 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1956 iac_decoder_select="imc_decoder"
1957 imc_decoder_select="bswapdsp fft mdct sinewin"
1958 indeo3_decoder_select="hpeldsp"
1959 indeo4_decoder_select="ividsp"
1960 indeo5_decoder_select="ividsp"
1961 interplay_video_decoder_select="hpeldsp"
1962 jpegls_decoder_select="golomb mjpeg_decoder"
1963 jpegls_encoder_select="golomb"
1964 jv_decoder_select="blockdsp"
1965 lagarith_decoder_select="huffyuvdsp"
1966 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1967 loco_decoder_select="golomb"
1968 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1969 metasound_decoder_select="lsp mdct sinewin"
1970 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1971 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1972 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1973 mjpegb_decoder_select="mjpeg_decoder"
1974 mlp_decoder_select="mlp_parser"
1975 motionpixels_decoder_select="bswapdsp"
1976 mp1_decoder_select="mpegaudio"
1977 mp1float_decoder_select="mpegaudio"
1978 mp2_decoder_select="mpegaudio"
1979 mp2float_decoder_select="mpegaudio"
1980 mp3_decoder_select="mpegaudio"
1981 mp3adu_decoder_select="mpegaudio"
1982 mp3adufloat_decoder_select="mpegaudio"
1983 mp3float_decoder_select="mpegaudio"
1984 mp3on4_decoder_select="mpegaudio"
1985 mp3on4float_decoder_select="mpegaudio"
1986 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1987 mpc8_decoder_select="mpegaudiodsp"
1988 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1989 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1990 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1991 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1992 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1993 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1994 mpeg2_qsv_decoder_deps="libmfx"
1995 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1996 mpeg2_qsv_encoder_deps="libmfx"
1997 mpeg2_qsv_encoder_select="qsvenc"
1998 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1999 mpeg4_encoder_select="h263_encoder"
2000 msa1_decoder_select="mss34dsp"
2001 msmpeg4v1_decoder_select="h263_decoder"
2002 msmpeg4v2_decoder_select="h263_decoder"
2003 msmpeg4v2_encoder_select="h263_encoder"
2004 msmpeg4v3_decoder_select="h263_decoder"
2005 msmpeg4v3_encoder_select="h263_encoder"
2006 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2007 mts2_decoder_select="mss34dsp"
2008 mxpeg_decoder_select="mjpeg_decoder"
2009 nellymoser_decoder_select="mdct sinewin"
2010 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2011 nuv_decoder_select="idctdsp lzo"
2012 on2avc_decoder_select="mdct"
2013 opus_decoder_deps="avresample"
2014 opus_decoder_select="imdct15"
2015 png_decoder_deps="zlib"
2016 png_encoder_deps="zlib"
2017 png_encoder_select="huffyuvencdsp"
2018 prores_decoder_select="idctdsp"
2019 prores_encoder_select="fdctdsp"
2020 qcelp_decoder_select="lsp"
2021 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2022 ra_144_encoder_select="audio_frame_queue lpc"
2023 ralf_decoder_select="golomb"
2024 rscc_decoder_deps="zlib"
2025 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2026 rv10_encoder_select="h263_encoder"
2027 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2028 rv20_encoder_select="h263_encoder"
2029 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2030 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2031 screenpresso_decoder_deps="zlib"
2032 shorten_decoder_select="golomb"
2033 sipr_decoder_select="lsp"
2034 sp5x_decoder_select="mjpeg_decoder"
2035 svq1_decoder_select="hpeldsp"
2036 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2037 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2038 svq3_decoder_suggest="zlib"
2039 tak_decoder_select="audiodsp"
2040 tdsc_decoder_deps="zlib"
2041 tdsc_decoder_select="mjpeg_decoder"
2042 theora_decoder_select="vp3_decoder"
2043 thp_decoder_select="mjpeg_decoder"
2044 tiff_decoder_suggest="zlib"
2045 tiff_encoder_suggest="zlib"
2046 truehd_decoder_select="mlp_decoder"
2047 truemotion2_decoder_select="bswapdsp"
2048 truespeech_decoder_select="bswapdsp"
2049 tscc_decoder_deps="zlib"
2050 txd_decoder_select="texturedsp"
2051 twinvq_decoder_select="mdct lsp sinewin"
2052 utvideo_decoder_select="bswapdsp"
2053 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2054 vble_decoder_select="huffyuvdsp"
2055 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2056 vc1image_decoder_select="vc1_decoder"
2057 vorbis_decoder_select="mdct"
2058 vorbis_encoder_select="mdct"
2059 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2060 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2061 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2062 vp6a_decoder_select="vp6_decoder"
2063 vp6f_decoder_select="vp6_decoder"
2064 vp7_decoder_select="h264pred videodsp vp8dsp"
2065 vp8_decoder_select="h264pred videodsp vp8dsp"
2066 vp9_decoder_select="videodsp"
2067 webp_decoder_select="vp8_decoder"
2068 wmapro_decoder_select="mdct sinewin wma_freqs"
2069 wmav1_decoder_select="mdct sinewin wma_freqs"
2070 wmav1_encoder_select="mdct sinewin wma_freqs"
2071 wmav2_decoder_select="mdct sinewin wma_freqs"
2072 wmav2_encoder_select="mdct sinewin wma_freqs"
2073 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2074 wmv1_decoder_select="h263_decoder"
2075 wmv1_encoder_select="h263_encoder"
2076 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2077 wmv2_encoder_select="h263_encoder wmv2dsp"
2078 wmv3_decoder_select="vc1_decoder"
2079 wmv3image_decoder_select="wmv3_decoder"
2080 zerocodec_decoder_deps="zlib"
2081 zlib_decoder_deps="zlib"
2082 zlib_encoder_deps="zlib"
2083 zmbv_decoder_deps="zlib"
2084 zmbv_encoder_deps="zlib"
2085
2086 # hardware accelerators
2087 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2088 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2089 vaapi_deps="va_va_h"
2090 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2091 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2092 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2093
2094 h263_vaapi_hwaccel_deps="vaapi"
2095 h263_vaapi_hwaccel_select="h263_decoder"
2096 h264_d3d11va_hwaccel_deps="d3d11va"
2097 h264_d3d11va_hwaccel_select="h264_decoder"
2098 h264_dxva2_hwaccel_deps="dxva2"
2099 h264_dxva2_hwaccel_select="h264_decoder"
2100 h264_mmal_decoder_deps="mmal"
2101 h264_mmal_hwaccel_deps="mmal"
2102 h264_mmal_decoder_select="h264_decoder"
2103 h264_mmal_encoder_deps="mmal"
2104 h264_qsv_hwaccel_deps="libmfx"
2105 h264_vaapi_hwaccel_deps="vaapi"
2106 h264_vaapi_hwaccel_select="h264_decoder"
2107 h264_vda_hwaccel_deps="vda"
2108 h264_vda_hwaccel_select="h264_decoder"
2109 h264_vda_old_hwaccel_deps="vda"
2110 h264_vda_old_hwaccel_select="h264_decoder"
2111 h264_vdpau_hwaccel_deps="vdpau"
2112 h264_vdpau_hwaccel_select="h264_decoder"
2113 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2114 hevc_d3d11va_hwaccel_select="hevc_decoder"
2115 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2116 hevc_dxva2_hwaccel_select="hevc_decoder"
2117 hevc_qsv_hwaccel_deps="libmfx"
2118 mpeg1_vdpau_hwaccel_deps="vdpau"
2119 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2120 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2121 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2122 mpeg2_dxva2_hwaccel_deps="dxva2"
2123 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2124 mpeg2_qsv_hwaccel_deps="libmfx"
2125 mpeg2_vaapi_hwaccel_deps="vaapi"
2126 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2127 mpeg2_vdpau_hwaccel_deps="vdpau"
2128 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2129 mpeg4_vaapi_hwaccel_deps="vaapi"
2130 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2131 mpeg4_vdpau_hwaccel_deps="vdpau"
2132 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2133 vc1_d3d11va_hwaccel_deps="d3d11va"
2134 vc1_d3d11va_hwaccel_select="vc1_decoder"
2135 vc1_dxva2_hwaccel_deps="dxva2"
2136 vc1_dxva2_hwaccel_select="vc1_decoder"
2137 vc1_vaapi_hwaccel_deps="vaapi"
2138 vc1_vaapi_hwaccel_select="vc1_decoder"
2139 vc1_vdpau_hwaccel_deps="vdpau"
2140 vc1_vdpau_hwaccel_select="vc1_decoder"
2141 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2142 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2143 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2144 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2145
2146 # parsers
2147 h264_parser_select="h264_decoder"
2148 hevc_parser_select="golomb"
2149 mpegvideo_parser_select="mpegvideo"
2150 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2151 vc1_parser_select="mpegvideo startcode vc1_decoder"
2152
2153 # bitstream_filters
2154 mjpeg2jpeg_bsf_select="jpegtables"
2155
2156 # external libraries
2157 libdcadec_decoder_deps="libdcadec"
2158 libfaac_encoder_deps="libfaac"
2159 libfaac_encoder_select="audio_frame_queue"
2160 libfdk_aac_decoder_deps="libfdk_aac"
2161 libfdk_aac_encoder_deps="libfdk_aac"
2162 libfdk_aac_encoder_select="audio_frame_queue"
2163 libgsm_decoder_deps="libgsm"
2164 libgsm_encoder_deps="libgsm"
2165 libgsm_ms_decoder_deps="libgsm"
2166 libgsm_ms_encoder_deps="libgsm"
2167 libilbc_decoder_deps="libilbc"
2168 libilbc_encoder_deps="libilbc"
2169 libkvazaar_encoder_deps="libkvazaar"
2170 libmp3lame_encoder_deps="libmp3lame"
2171 libmp3lame_encoder_select="audio_frame_queue"
2172 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2173 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2174 libopencore_amrnb_encoder_select="audio_frame_queue"
2175 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2176 libopenh264_encoder_deps="libopenh264"
2177 libopenjpeg_decoder_deps="libopenjpeg"
2178 libopenjpeg_encoder_deps="libopenjpeg"
2179 libopus_decoder_deps="libopus"
2180 libopus_encoder_deps="libopus"
2181 libopus_encoder_select="audio_frame_queue"
2182 libschroedinger_decoder_deps="libschroedinger"
2183 libschroedinger_encoder_deps="libschroedinger"
2184 libspeex_decoder_deps="libspeex"
2185 libspeex_encoder_deps="libspeex"
2186 libspeex_encoder_select="audio_frame_queue"
2187 libtheora_encoder_deps="libtheora"
2188 libtwolame_encoder_deps="libtwolame"
2189 libvo_aacenc_encoder_deps="libvo_aacenc"
2190 libvo_aacenc_encoder_select="audio_frame_queue"
2191 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2192 libvorbis_encoder_deps="libvorbis"
2193 libvorbis_encoder_select="audio_frame_queue"
2194 libvpx_vp8_decoder_deps="libvpx"
2195 libvpx_vp8_encoder_deps="libvpx"
2196 libvpx_vp9_decoder_deps="libvpx"
2197 libvpx_vp9_encoder_deps="libvpx"
2198 libwavpack_encoder_deps="libwavpack"
2199 libwebp_encoder_deps="libwebp"
2200 libx262_encoder_deps="libx262"
2201 libx264_encoder_deps="libx264"
2202 libx265_encoder_deps="libx265"
2203 libxavs_encoder_deps="libxavs"
2204 libxvid_encoder_deps="libxvid"
2205
2206 # demuxers / muxers
2207 ac3_demuxer_select="ac3_parser"
2208 asf_demuxer_select="riffdec"
2209 asf_muxer_select="riffenc"
2210 asf_stream_muxer_select="asf_muxer"
2211 avi_demuxer_select="riffdec"
2212 avi_muxer_select="riffenc"
2213 avisynth_demuxer_deps="avisynth"
2214 avisynth_demuxer_select="riffdec"
2215 caf_demuxer_select="riffdec"
2216 dash_muxer_select="mp4_muxer"
2217 dirac_demuxer_select="dirac_parser"
2218 dv_demuxer_select="dvprofile"
2219 dv_muxer_select="dvprofile"
2220 dxa_demuxer_select="riffdec"
2221 eac3_demuxer_select="ac3_parser"
2222 f4v_muxer_select="mov_muxer"
2223 flac_demuxer_select="flac_parser"
2224 hds_muxer_select="flv_muxer"
2225 hls_muxer_select="mpegts_muxer"
2226 ipod_muxer_select="mov_muxer"
2227 ismv_muxer_select="mov_muxer"
2228 matroska_audio_muxer_select="matroska_muxer"
2229 matroska_demuxer_select="riffdec"
2230 matroska_demuxer_suggest="bzlib lzo zlib"
2231 matroska_muxer_select="riffenc"
2232 mmf_muxer_select="riffenc"
2233 mov_demuxer_select="riffdec"
2234 mov_demuxer_suggest="zlib"
2235 mov_muxer_select="riffenc rtpenc_chain"
2236 mp3_demuxer_select="mpegaudio_parser"
2237 mp4_muxer_select="mov_muxer"
2238 mpegts_muxer_select="adts_muxer latm_muxer"
2239 mpegtsraw_demuxer_select="mpegts_demuxer"
2240 mxf_d10_muxer_select="mxf_muxer"
2241 nut_muxer_select="riffenc"
2242 nuv_demuxer_select="riffdec"
2243 oga_muxer_select="ogg_muxer"
2244 ogg_demuxer_select="golomb"
2245 opus_muxer_select="ogg_muxer"
2246 psp_muxer_select="mov_muxer"
2247 rtp_demuxer_select="sdp_demuxer"
2248 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2249 rtsp_demuxer_select="http_protocol rtpdec"
2250 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2251 sap_demuxer_select="sdp_demuxer"
2252 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2253 sdp_demuxer_select="rtpdec"
2254 smoothstreaming_muxer_select="ismv_muxer"
2255 spdif_muxer_select="aac_parser"
2256 spx_muxer_select="ogg_muxer"
2257 tak_demuxer_select="tak_parser"
2258 tg2_muxer_select="mov_muxer"
2259 tgp_muxer_select="mov_muxer"
2260 w64_demuxer_select="wav_demuxer"
2261 wav_demuxer_select="riffdec"
2262 wav_muxer_select="riffenc"
2263 webm_muxer_select="riffenc"
2264 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2265 wtv_demuxer_select="riffdec"
2266 xmv_demuxer_select="riffdec"
2267 xwma_demuxer_select="riffdec"
2268
2269 # indevs / outdevs
2270 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2271 alsa_outdev_deps="alsa_asoundlib_h"
2272 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2273 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2274 dv1394_indev_deps="dv1394"
2275 dv1394_indev_select="dv_demuxer"
2276 fbdev_indev_deps="linux_fb_h"
2277 jack_indev_deps="jack_jack_h pthreads"
2278 libcdio_indev_deps="libcdio"
2279 libdc1394_indev_deps="libdc1394"
2280 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2281 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2282 pulse_indev_deps="libpulse"
2283 sndio_indev_deps="sndio_h"
2284 sndio_outdev_deps="sndio_h"
2285 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2286 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2287 vfwcap_indev_extralibs="-lavicap32"
2288 x11grab_indev_deps="x11grab"
2289 x11grab_xcb_indev_deps="libxcb"
2290
2291 # protocols
2292 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2293 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2294 ffrtmpcrypt_protocol_select="tcp_protocol"
2295 ffrtmphttp_protocol_deps="!librtmp_protocol"
2296 ffrtmphttp_protocol_select="http_protocol"
2297 gopher_protocol_select="network"
2298 http_protocol_select="tcp_protocol"
2299 httpproxy_protocol_select="tcp_protocol"
2300 https_protocol_select="tls_protocol"
2301 icecast_protocol_select="http_protocol"
2302 librtmp_protocol_deps="librtmp"
2303 librtmpe_protocol_deps="librtmp"
2304 librtmps_protocol_deps="librtmp"
2305 librtmpt_protocol_deps="librtmp"
2306 librtmpte_protocol_deps="librtmp"
2307 mmsh_protocol_select="http_protocol"
2308 mmst_protocol_select="network"
2309 rtmp_protocol_deps="!librtmp_protocol"
2310 rtmp_protocol_select="tcp_protocol"
2311 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2312 rtmps_protocol_deps="!librtmp_protocol"
2313 rtmps_protocol_select="tls_protocol"
2314 rtmpt_protocol_select="ffrtmphttp_protocol"
2315 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2316 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2317 rtp_protocol_select="udp_protocol"
2318 sctp_protocol_deps="struct_sctp_event_subscribe"
2319 sctp_protocol_select="network"
2320 srtp_protocol_select="rtp_protocol"
2321 tcp_protocol_select="network"
2322 tls_gnutls_protocol_deps="gnutls"
2323 tls_gnutls_protocol_select="tcp_protocol"
2324 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2325 tls_openssl_protocol_select="tcp_protocol"
2326 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2327 udp_protocol_select="network"
2328 unix_protocol_deps="sys_un_h"
2329 unix_protocol_select="network"
2330
2331 # filters
2332 blackframe_filter_deps="gpl"
2333 boxblur_filter_deps="gpl"
2334 bs2b_filter_deps="libbs2b"
2335 cropdetect_filter_deps="gpl"
2336 delogo_filter_deps="gpl"
2337 drawtext_filter_deps="libfreetype"
2338 frei0r_filter_deps="frei0r dlopen"
2339 frei0r_filter_extralibs='$ldl'
2340 frei0r_src_filter_deps="frei0r dlopen"
2341 frei0r_src_filter_extralibs='$ldl'
2342 hqdn3d_filter_deps="gpl"
2343 interlace_filter_deps="gpl"
2344 ocv_filter_deps="libopencv"
2345 resample_filter_deps="avresample"
2346 scale_filter_deps="swscale"
2347
2348 # examples
2349 avcodec_example_deps="avcodec avutil"
2350 filter_audio_example_deps="avfilter avutil"
2351 metadata_example_deps="avformat avutil"
2352 output_example_deps="avcodec avformat avutil swscale"
2353 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2354 transcode_aac_example_deps="avcodec avformat avresample"
2355
2356 # libraries, in linking order
2357 avcodec_deps="avutil"
2358 avdevice_deps="avformat avcodec avutil"
2359 avfilter_deps="avutil"
2360 avformat_deps="avcodec avutil"
2361 avresample_deps="avutil"
2362 swscale_deps="avutil"
2363
2364 # programs
2365 avconv_deps="avcodec avfilter avformat avresample swscale"
2366 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2367                fps_filter null_filter resample_filter scale_filter
2368                setpts_filter trim_filter"
2369 avplay_deps="avcodec avformat avresample swscale sdl"
2370 avplay_libs='$sdl_libs'
2371 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2372 avprobe_deps="avcodec avformat"
2373
2374 # documentation
2375 pod2man_deps="doc"
2376 texi2html_deps="doc"
2377
2378 # default parameters
2379
2380 logfile="config.log"
2381
2382 # installation paths
2383 prefix_default="/usr/local"
2384 bindir_default='${prefix}/bin'
2385 datadir_default='${prefix}/share/avconv'
2386 docdir_default='${prefix}/share/doc/libav'
2387 incdir_default='${prefix}/include'
2388 libdir_default='${prefix}/lib'
2389 mandir_default='${prefix}/share/man'
2390 shlibdir_default="$libdir_default"
2391
2392 # toolchain
2393 ar_default="ar"
2394 cc_default="gcc"
2395 host_cc_default="gcc"
2396 cp_f="cp -f"
2397 ln_s="ln -s -f"
2398 nm_default="nm -g"
2399 objformat="elf"
2400 pkg_config_default=pkg-config
2401 ranlib="ranlib"
2402 strip="strip"
2403 yasmexe="yasm"
2404
2405 # machine
2406 arch_default=$(uname -m)
2407 cpu="generic"
2408 intrinsics="none"
2409
2410 # OS
2411 target_os_default=$(tolower $(uname -s))
2412 host_os=$target_os_default
2413
2414 # configurable options
2415 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2416
2417 enable asm
2418 enable debug
2419 enable doc
2420 enable faan faandct faanidct
2421 enable optimizations
2422 enable safe_bitstream_reader
2423 enable static
2424 enable swscale_alpha
2425 enable valgrind_backtrace
2426
2427 # By default, enable only those hwaccels that have no external dependencies.
2428 enable d3d11va dxva2 vda vdpau
2429
2430 # build settings
2431 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2432 LIBPREF="lib"
2433 LIBSUF=".a"
2434 FULLNAME='$(NAME)$(BUILDSUF)'
2435 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2436 SLIBPREF="lib"
2437 SLIBSUF=".so"
2438 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2439 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2440 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2441 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2442 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2443 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2444
2445 asflags_filter=echo
2446 cflags_filter=echo
2447 ldflags_filter=echo
2448
2449 AS_C='-c'
2450 AS_O='-o $@'
2451 CC_C='-c'
2452 CC_E='-E -o $@'
2453 CC_O='-o $@'
2454 OBJCC_C='-c'
2455 OBJCC_E='-E -o $@'
2456 OBJCC_O='-o $@'
2457 LD_O='-o $@'
2458 LD_LIB='-l%'
2459 LD_PATH='-L'
2460 HOSTCC_C='-c'
2461 HOSTCC_E='-E -o $@'
2462 HOSTCC_O='-o $@'
2463 HOSTLD_O='-o $@'
2464
2465 host_libs='-lm'
2466 host_cflags_filter=echo
2467 host_ldflags_filter=echo
2468
2469 target_path='$(CURDIR)'
2470
2471 # since the object filename is not given with the -MM flag, the compiler
2472 # is only able to print the basename, and we must add the path ourselves
2473 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2474 DEPFLAGS='-MM'
2475
2476 # find source path
2477 if test -f configure; then
2478     source_path=.
2479 else
2480     source_path=$(cd $(dirname "$0"); pwd)
2481     echo "$source_path" | grep -q '[[:blank:]]' &&
2482         die "Out of tree builds are impossible with whitespace in source path."
2483     test -e "$source_path/config.h" &&
2484         die "Out of tree builds are impossible with config.h in source dir."
2485 fi
2486
2487 for v in "$@"; do
2488     r=${v#*=}
2489     l=${v%"$r"}
2490     r=$(sh_quote "$r")
2491     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2492 done
2493
2494 find_things(){
2495     thing=$1
2496     pattern=$2
2497     file=$source_path/$3
2498     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2499 }
2500
2501 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2502 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2503 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2504 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2505 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2506 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2507 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2508 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2509 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2510 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2511 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2512
2513 ALL_COMPONENTS="
2514     $BSF_LIST
2515     $DECODER_LIST
2516     $DEMUXER_LIST
2517     $ENCODER_LIST
2518     $FILTER_LIST
2519     $HWACCEL_LIST
2520     $INDEV_LIST
2521     $MUXER_LIST
2522     $OUTDEV_LIST
2523     $PARSER_LIST
2524     $PROTOCOL_LIST
2525 "
2526
2527 for n in $COMPONENT_LIST; do
2528     v=$(toupper ${n%s})_LIST
2529     eval enable \$$v
2530     eval ${n}_if_any="\$$v"
2531 done
2532
2533 enable $ARCH_EXT_LIST
2534
2535 die_unknown(){
2536     echo "Unknown option \"$1\"."
2537     echo "See $0 --help for available options."
2538     exit 1
2539 }
2540
2541 print_3_columns() {
2542     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2543 }
2544
2545 show_list() {
2546     suffix=_$1
2547     shift
2548     echo $* | sed s/$suffix//g | print_3_columns
2549     exit 0
2550 }
2551
2552 rand_list(){
2553     IFS=', '
2554     set -- $*
2555     unset IFS
2556     for thing; do
2557         comp=${thing%:*}
2558         prob=${thing#$comp}
2559         prob=${prob#:}
2560         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2561         echo "prob ${prob:-0.5}"
2562         printf '%s\n' $comp
2563     done
2564 }
2565
2566 do_random(){
2567     action=$1
2568     shift
2569     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2570     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2571 }
2572
2573 for opt do
2574     optval="${opt#*=}"
2575     case "$opt" in
2576         --extra-ldflags=*)
2577             add_ldflags $optval
2578         ;;
2579         --extra-ldexeflags=*)
2580             add_ldexeflags $optval
2581         ;;
2582         --extra-libs=*)
2583             add_extralibs $optval
2584         ;;
2585         --disable-devices)
2586             disable $INDEV_LIST $OUTDEV_LIST
2587         ;;
2588         --enable-debug=*)
2589             debuglevel="$optval"
2590         ;;
2591         --disable-programs)
2592             disable $PROGRAM_LIST
2593         ;;
2594         --disable-everything)
2595             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2596         ;;
2597         --disable-all)
2598             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2599             disable $LIBRARY_LIST $PROGRAM_LIST doc
2600         ;;
2601         --enable-random|--disable-random)
2602             action=${opt%%-random}
2603             do_random ${action#--} $COMPONENT_LIST
2604         ;;
2605         --enable-random=*|--disable-random=*)
2606             action=${opt%%-random=*}
2607             do_random ${action#--} $optval
2608         ;;
2609         --enable-*=*|--disable-*=*)
2610             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2611             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2612             eval list=\$$(toupper $thing)_LIST
2613             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2614             $action $(filter "$name" $list)
2615         ;;
2616         --enable-avserver|--disable-avserver*)
2617             warn "avserver has been removed, the ${opt} option is only"\
2618                  "provided for compatibility and will be removed in the future"
2619         ;;
2620         --enable-?*|--disable-?*)
2621             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2622             if is_in $option $COMPONENT_LIST; then
2623                 test $action = disable && action=unset
2624                 eval $action \$$(toupper ${option%s})_LIST
2625             elif is_in $option $CMDLINE_SELECT; then
2626                 $action $option
2627             else
2628                 die_unknown $opt
2629             fi
2630         ;;
2631         --list-*)
2632             NAME="${opt#--list-}"
2633             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2634             NAME=${NAME%s}
2635             eval show_list $NAME \$$(toupper $NAME)_LIST
2636         ;;
2637         --help|-h) show_help
2638         ;;
2639         *)
2640             optname="${opt%%=*}"
2641             optname="${optname#--}"
2642             optname=$(echo "$optname" | sed 's/-/_/g')
2643             if is_in $optname $CMDLINE_SET; then
2644                 eval $optname='$optval'
2645             elif is_in $optname $CMDLINE_APPEND; then
2646                 append $optname "$optval"
2647             else
2648                 die_unknown $opt
2649             fi
2650         ;;
2651     esac
2652 done
2653
2654 for e in $env; do
2655     eval "export $e"
2656 done
2657
2658 disabled logging && logfile=/dev/null
2659
2660 # Disable all the library-specific components if the library itself
2661 # is disabled, see AVCODEC_LIST and following _LIST variables.
2662
2663 disable_components(){
2664     disabled ${1} && disable $(
2665         eval components="\$$(toupper ${1})_COMPONENTS"
2666         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2667     )
2668 }
2669
2670 map 'disable_components $v' $LIBRARY_LIST
2671
2672 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2673 set >> $logfile
2674
2675 case "$toolchain" in
2676     clang-asan)
2677         cc_default="clang"
2678         add_cflags  -fsanitize=address
2679         add_ldflags -fsanitize=address
2680     ;;
2681     clang-tsan)
2682         cc_default="clang"
2683         add_cflags  -fsanitize=thread -pie
2684         add_ldflags -fsanitize=thread -pie
2685     ;;
2686     clang-usan)
2687         cc_default="clang"
2688         add_cflags  -fsanitize=undefined -O1
2689         add_ldflags -fsanitize=undefined
2690     ;;
2691     gcc-asan)
2692         cc_default="gcc"
2693         add_cflags  -fsanitize=address
2694         add_ldflags -fsanitize=address
2695     ;;
2696     gcc-tsan)
2697         cc_default="gcc"
2698         add_cflags  -fsanitize=thread -pie -fPIC
2699         add_ldflags -fsanitize=thread -pie -fPIC
2700     ;;
2701     gcc-usan)
2702         cc_default="gcc"
2703         add_cflags  -fsanitize=undefined
2704         add_ldflags -fsanitize=undefined
2705     ;;
2706     valgrind-massif)
2707         target_exec_default="valgrind"
2708         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2709     ;;
2710     valgrind-memcheck)
2711         target_exec_default="valgrind"
2712         target_exec_args="--track-origins=yes --leak-check=full"
2713     ;;
2714     msvc)
2715         # Check whether the current MSVC version needs the C99 converter.
2716         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2717         # support enough of C99 to build libav. Default to the new
2718         # behaviour if the regexp was unable to match anything, since this
2719         # successfully parses the version number of existing supported
2720         # versions that require the converter (MSVC 2010 and 2012).
2721         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2722         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2723             cc_default="cl"
2724         else
2725             cc_default="c99wrap cl"
2726         fi
2727         ld_default="$source_path/compat/windows/mslink"
2728         nm_default="dumpbin -symbols"
2729         ar_default="lib"
2730         case "$arch" in
2731         arm*)
2732             as_default="armasm"
2733             ;;
2734         esac
2735         target_os_default="win32"
2736         # Use a relative path for TMPDIR. This makes sure all the
2737         # ffconf temp files are written with a relative path, avoiding
2738         # issues with msys/win32 path conversion for MSVC parameters
2739         # such as -Fo<file> or -out:<file>.
2740         TMPDIR=.
2741     ;;
2742     icl)
2743         cc_default="icl"
2744         ld_default="xilink"
2745         nm_default="dumpbin -symbols"
2746         ar_default="xilib"
2747         target_os_default="win32"
2748         TMPDIR=.
2749     ;;
2750     gcov)
2751         add_cflags  -fprofile-arcs -ftest-coverage
2752         add_ldflags -fprofile-arcs -ftest-coverage
2753     ;;
2754     hardened)
2755         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2756         add_cflags   -fno-strict-overflow -fstack-protector-all
2757         add_ldflags  -Wl,-z,relro -Wl,-z,now
2758     ;;
2759     ?*)
2760         die "Unknown toolchain $toolchain"
2761     ;;
2762 esac
2763
2764 test -n "$cross_prefix" && enable cross_compile
2765
2766 if enabled cross_compile; then
2767     test -n "$arch" && test -n "$target_os" ||
2768         die "Must specify target arch and OS when cross-compiling"
2769 fi
2770
2771 ar_default="${cross_prefix}${ar_default}"
2772 cc_default="${cross_prefix}${cc_default}"
2773 occ_default="${cross_prefix}${occ_default}"
2774 nm_default="${cross_prefix}${nm_default}"
2775 pkg_config_default="${cross_prefix}${pkg_config_default}"
2776 ranlib="${cross_prefix}${ranlib}"
2777 strip="${cross_prefix}${strip}"
2778
2779 sysinclude_default="${sysroot}/usr/include"
2780
2781 set_default arch cc pkg_config sysinclude target_exec target_os
2782 enabled cross_compile || host_cc_default=$cc
2783 set_default host_cc
2784
2785 if ! $pkg_config --version >/dev/null 2>&1; then
2786     warn "$pkg_config not found, library detection may fail."
2787     pkg_config=false
2788 fi
2789
2790 exesuf() {
2791     case $1 in
2792         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2793     esac
2794 }
2795
2796 EXESUF=$(exesuf $target_os)
2797 HOSTEXESUF=$(exesuf $host_os)
2798
2799 # set temporary file name
2800 : ${TMPDIR:=$TEMPDIR}
2801 : ${TMPDIR:=$TMP}
2802 : ${TMPDIR:=/tmp}
2803
2804 if ! check_cmd mktemp -u XXXXXX; then
2805     # simple replacement for missing mktemp
2806     # NOT SAFE FOR GENERAL USE
2807     mktemp(){
2808         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2809     }
2810 fi
2811
2812 tmpfile(){
2813     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2814         (set -C; exec > $tmp) 2>/dev/null ||
2815         die "Unable to create temporary file in $TMPDIR."
2816     append TMPFILES $tmp
2817     eval $1=$tmp
2818 }
2819
2820 trap 'rm -f -- $TMPFILES' EXIT
2821
2822 tmpfile TMPASM .asm
2823 tmpfile TMPC   .c
2824 tmpfile TMPE   $EXESUF
2825 tmpfile TMPH   .h
2826 tmpfile TMPO   .o
2827 tmpfile TMPS   .S
2828 tmpfile TMPSH  .sh
2829 tmpfile TMPV   .ver
2830
2831 unset -f mktemp
2832
2833 chmod +x $TMPE
2834
2835 # make sure we can execute files in $TMPDIR
2836 cat > $TMPSH 2>> $logfile <<EOF
2837 #! /bin/sh
2838 EOF
2839 chmod +x $TMPSH >> $logfile 2>&1
2840 if ! $TMPSH >> $logfile 2>&1; then
2841     cat <<EOF
2842 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2843 variable to another directory and make sure that it is not mounted noexec.
2844 EOF
2845     die "Sanity test failed."
2846 fi
2847
2848 armasm_flags(){
2849     for flag; do
2850         case $flag in
2851             # Filter out MSVC cl.exe options from cflags that shouldn't
2852             # be passed to gas-preprocessor
2853             -M[TD]*)                                            ;;
2854             *)                  echo $flag                      ;;
2855         esac
2856    done
2857 }
2858
2859 ccc_flags(){
2860     for flag; do
2861         case $flag in
2862             -std=c99)           echo -c99                       ;;
2863             -mcpu=*)            echo -arch ${flag#*=}           ;;
2864             -mieee)             echo -ieee                      ;;
2865             -O*|-fast)          echo $flag                      ;;
2866             -fno-math-errno)    echo -assume nomath_errno       ;;
2867             -g)                 echo -g3                        ;;
2868             -Wall)              echo -msg_enable level2         ;;
2869             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2870             -Wl,*)              echo $flag                      ;;
2871             -f*|-W*)                                            ;;
2872             *)                  echo $flag                      ;;
2873         esac
2874    done
2875 }
2876
2877 cparser_flags(){
2878     for flag; do
2879         case $flag in
2880             -Wno-switch)             echo -Wno-switch-enum ;;
2881             -Wno-format-zero-length) ;;
2882             -Wdisabled-optimization) ;;
2883             -Wno-pointer-sign)       echo -Wno-other ;;
2884             *)                       echo $flag ;;
2885         esac
2886     done
2887 }
2888
2889 msvc_common_flags(){
2890     for flag; do
2891         case $flag in
2892             # In addition to specifying certain flags under the compiler
2893             # specific filters, they must be specified here as well or else the
2894             # generic catch all at the bottom will print the original flag.
2895             -Wall)                ;;
2896             -std=c99)             ;;
2897             # Common flags
2898             -fomit-frame-pointer) ;;
2899             -g)                   echo -Z7 ;;
2900             -fno-math-errno)      ;;
2901             -fno-common)          ;;
2902             -fno-signed-zeros)    ;;
2903             -fPIC)                ;;
2904             -mthumb)              ;;
2905             -march=*)             ;;
2906             -lz)                  echo zlib.lib ;;
2907             -lavifil32)           echo vfw32.lib ;;
2908             -lavicap32)           echo vfw32.lib user32.lib ;;
2909             -l*)                  echo ${flag#-l}.lib ;;
2910             -L*)                  echo -libpath:${flag#-L} ;;
2911             *)                    echo $flag ;;
2912         esac
2913     done
2914 }
2915
2916 msvc_flags(){
2917     msvc_common_flags "$@"
2918     for flag; do
2919         case $flag in
2920             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2921                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2922                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2923                                        -wd4273 -wd4554 -wd4701 ;;
2924         esac
2925     done
2926 }
2927
2928 icl_flags(){
2929     msvc_common_flags "$@"
2930     for flag; do
2931         case $flag in
2932             # Despite what Intel's documentation says -Wall, which is supported
2933             # on Windows, does enable remarks so disable them here.
2934             -Wall)                echo $flag -Qdiag-disable:remark ;;
2935             -std=c99)             echo -Qstd=c99 ;;
2936         esac
2937     done
2938 }
2939
2940 pgi_flags(){
2941     for flag; do
2942         case $flag in
2943             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2944             -fomit-frame-pointer) echo -Mnoframe ;;
2945             -g)                   echo -gopt ;;
2946             *)                    echo $flag ;;
2947         esac
2948     done
2949 }
2950
2951 suncc_flags(){
2952     for flag; do
2953         case $flag in
2954             -march=*|-mcpu=*)
2955                 case "${flag#*=}" in
2956                     native)                   echo -xtarget=native       ;;
2957                     v9|niagara)               echo -xarch=sparc          ;;
2958                     ultrasparc)               echo -xarch=sparcvis       ;;
2959                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2960                     i586|pentium)             echo -xchip=pentium        ;;
2961                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2962                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2963                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2964                     pentium4*)          echo -xtarget=pentium4           ;;
2965                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2966                     *-sse3)             echo -xarch=sse3                 ;;
2967                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2968                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2969                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2970                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2971                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2972                     k8|opteron|athlon64|athlon-fx)
2973                                                echo -xarch=sse2a         ;;
2974                     athlon*)                   echo -xarch=pentium_proa  ;;
2975                 esac
2976                 ;;
2977             -std=c99)             echo -xc99              ;;
2978             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2979             -fPIC)                echo -KPIC -xcode=pic32 ;;
2980             -W*,*)                echo $flag              ;;
2981             -f*-*|-W*|-mimpure-text)                      ;;
2982             -shared)              echo -G                 ;;
2983             *)                    echo $flag              ;;
2984         esac
2985     done
2986 }
2987
2988 tms470_flags(){
2989     for flag; do
2990         case $flag in
2991             -march=*|-mcpu=*)
2992                 case "${flag#*=}" in
2993                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2994                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2995                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2996                     armv6*|arm11*)          echo -mv=6   ;;
2997                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2998                                             echo -mv=5e  ;;
2999                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3000                 esac
3001                 ;;
3002             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3003             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3004             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3005             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3006             -msoft-float)   echo --float_support=vfplib       ;;
3007             -O[0-3]|-mf=*)  echo $flag                        ;;
3008             -g)             echo -g -mn                       ;;
3009             -pds=*)         echo $flag                        ;;
3010             -D*|-I*)        echo $flag                        ;;
3011             --gcc|--abi=*)  echo $flag                        ;;
3012             -me)            echo $flag                        ;;
3013         esac
3014     done
3015 }
3016
3017 probe_cc(){
3018     pfx=$1
3019     _cc=$2
3020
3021     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3022     unset _ld_o _ldflags _ld_lib _ld_path
3023     unset _depflags _DEPCMD _DEPFLAGS
3024     _flags_filter=echo
3025
3026     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3027         _type=llvm_gcc
3028         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3029         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3030         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3031         _cflags_speed='-O3'
3032         _cflags_size='-Os'
3033     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3034         _type=gcc
3035         gcc_version=$($_cc --version | head -n1)
3036         gcc_basever=$($_cc -dumpversion)
3037         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3038         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3039         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3040         if ! $_cc -dumpversion | grep -q '^2\.'; then
3041             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3042         fi
3043         _cflags_speed='-O3'
3044         _cflags_size='-Os'
3045     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3046         _type=icc
3047         _ident=$($_cc --version | head -n1)
3048         _depflags='-MMD'
3049         _cflags_speed='-O3'
3050         _cflags_size='-Os'
3051         _cflags_noopt='-O1'
3052     elif $_cc -v 2>&1 | grep -q xlc; then
3053         _type=xlc
3054         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3055         _cflags_speed='-O5'
3056         _cflags_size='-O5 -qcompact'
3057     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3058         _type=ccc
3059         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3060         _DEPFLAGS='-M'
3061         _cflags_speed='-fast'
3062         _cflags_size='-O1'
3063         _flags_filter=ccc_flags
3064     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3065         test -d "$sysroot" || die "No valid sysroot specified."
3066         _type=armcc
3067         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3068         armcc_conf="$PWD/armcc.conf"
3069         $_cc --arm_linux_configure                 \
3070              --arm_linux_config_file="$armcc_conf" \
3071              --configure_sysroot="$sysroot"        \
3072              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3073              die "Error creating armcc configuration file."
3074         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3075         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3076         as_default="${cross_prefix}gcc"
3077         _depflags='-MMD'
3078         _cflags_speed='-O3'
3079         _cflags_size='-Os'
3080     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3081         _type=tms470
3082         _ident=$($_cc -version | head -n1 | tr -s ' ')
3083         _flags='--gcc --abi=eabi -me'
3084         _cc_e='-ppl -fe=$@'
3085         _cc_o='-fe=$@'
3086         _depflags='-ppa -ppd=$(@:.o=.d)'
3087         _cflags_speed='-O3 -mf=5'
3088         _cflags_size='-O3 -mf=2'
3089         _flags_filter=tms470_flags
3090     elif $_cc -v 2>&1 | grep -q clang; then
3091         _type=clang
3092         _ident=$($_cc --version 2>/dev/null | head -n1)
3093         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3094         _cflags_speed='-O3'
3095         _cflags_size='-Os'
3096     elif $_cc -V 2>&1 | grep -q Sun; then
3097         _type=suncc
3098         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3099         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3100         _DEPFLAGS='-xM1 -xc99'
3101         _ldflags='-std=c99'
3102         _cflags_speed='-O5'
3103         _cflags_size='-O5 -xspace'
3104         _flags_filter=suncc_flags
3105     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3106         _type=pathscale
3107         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3108         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3109         _cflags_speed='-O2'
3110         _cflags_size='-Os'
3111         _flags_filter='filter_out -Wdisabled-optimization'
3112     elif $_cc -v 2>&1 | grep -q Open64; then
3113         _type=open64
3114         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3115         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3116         _cflags_speed='-O2'
3117         _cflags_size='-Os'
3118         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3119     elif $_cc -V 2>&1 | grep -q Portland; then
3120         _type=pgi
3121         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3122         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3123         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3124         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3125         _cflags_noopt="-O1"
3126         _flags_filter=pgi_flags
3127     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3128         _type=armasm
3129         _ident=$($_cc | head -n1)
3130         # 4509: "This form of conditional instruction is deprecated"
3131         _flags="-nologo -ignore 4509"
3132         _flags_filter=armasm_flags
3133     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3134         _type=msvc
3135         _ident=$($_cc 2>&1 | head -n1)
3136         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3137         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3138         _cflags_speed="-O2"
3139         _cflags_size="-O1"
3140         if $_cc -nologo- 2>&1 | grep -q Linker; then
3141             _ld_o='-out:$@'
3142         else
3143             _ld_o='-Fe$@'
3144         fi
3145         _cc_o='-Fo$@'
3146         _cc_e='-P -Fi$@'
3147         _flags_filter=msvc_flags
3148         _ld_lib='lib%.a'
3149         _ld_path='-libpath:'
3150         _flags='-nologo'
3151         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3152     elif $_cc 2>&1 | grep -q Intel; then
3153         _type=icl
3154         _ident=$($_cc 2>&1 | head -n1)
3155         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3156         # Not only is O3 broken on 13.x+ but it is slower on all previous
3157         # versions (tested) as well.
3158         _cflags_speed="-O2"
3159         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3160         if $_cc 2>&1 | grep -q Linker; then
3161             _ld_o='-out:$@'
3162         else
3163             _ld_o='-Fe$@'
3164         fi
3165         _cc_o='-Fo$@'
3166         _cc_e='-P'
3167         _flags_filter=icl_flags
3168         _ld_lib='lib%.a'
3169         _ld_path='-libpath:'
3170         # -Qdiag-error to make icl error when seeing certain unknown arguments
3171         _flags='-nologo -Qdiag-error:4044,10157'
3172         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3173         # with MSVC which enables it by default.
3174         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3175     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3176         _type=cparser
3177         _ident=$($_cc --version | head -n1)
3178         _depflags='-MMD'
3179         _cflags_speed='-O4'
3180         _cflags_size='-O2'
3181         _flags_filter=cparser_flags
3182     fi
3183
3184     eval ${pfx}_type=\$_type
3185     eval ${pfx}_ident=\$_ident
3186 }
3187
3188 set_ccvars(){
3189     eval ${1}_C=\${_cc_c-\${${1}_C}}
3190     eval ${1}_E=\${_cc_e-\${${1}_E}}
3191     eval ${1}_O=\${_cc_o-\${${1}_O}}
3192
3193     if [ -n "$_depflags" ]; then
3194         eval ${1}_DEPFLAGS=\$_depflags
3195     else
3196         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3197         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3198         eval DEP${1}FLAGS=\$_flags
3199     fi
3200 }
3201
3202 probe_cc cc "$cc"
3203 cflags_filter=$_flags_filter
3204 cflags_speed=$_cflags_speed
3205 cflags_size=$_cflags_size
3206 cflags_noopt=$_cflags_noopt
3207 add_cflags $_flags $_cflags
3208 cc_ldflags=$_ldflags
3209 set_ccvars CC
3210
3211 probe_cc hostcc "$host_cc"
3212 host_cflags_filter=$_flags_filter
3213 add_host_cflags  $_flags $_cflags
3214 set_ccvars HOSTCC
3215
3216 test -n "$cc_type" && enable $cc_type ||
3217     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3218
3219 : ${as_default:=$cc}
3220 : ${objcc_default:=$cc}
3221 : ${dep_cc_default:=$cc}
3222 : ${ld_default:=$cc}
3223 : ${host_ld_default:=$host_cc}
3224 set_default ar as objcc dep_cc ld host_ld
3225
3226 probe_cc as "$as"
3227 asflags_filter=$_flags_filter
3228 add_asflags $_flags $_cflags
3229 set_ccvars AS
3230
3231 probe_cc objcc "$objcc"
3232 objcflags_filter=$_flags_filter
3233 add_objcflags $_flags $_cflags
3234 set_ccvars OBJC
3235
3236 probe_cc ld "$ld"
3237 ldflags_filter=$_flags_filter
3238 add_ldflags $_flags $_ldflags
3239 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3240 LD_O=${_ld_o-$LD_O}
3241 LD_LIB=${_ld_lib-$LD_LIB}
3242 LD_PATH=${_ld_path-$LD_PATH}
3243
3244 probe_cc hostld "$host_ld"
3245 host_ldflags_filter=$_flags_filter
3246 add_host_ldflags $_flags $_ldflags
3247 HOSTLD_O=${_ld_o-$HOSTLD_O}
3248
3249 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3250     probe_cc depcc "$dep_cc"
3251     CCDEP=${_DEPCMD:-$DEPCMD}
3252     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3253     DEPCCFLAGS=$_flags
3254 fi
3255
3256 if $ar 2>&1 | grep -q Microsoft; then
3257     arflags="-nologo"
3258     ar_o='-out:$@'
3259 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3260     arflags="rq"
3261     ar_o='$@'
3262 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3263     arflags='-Xany -r -c'
3264     ar_o='$@'
3265 else
3266     arflags="rc"
3267     ar_o='$@'
3268 fi
3269
3270 add_cflags $extra_cflags
3271 add_objcflags $extra_objcflags
3272 add_asflags $extra_cflags
3273
3274 if test -n "$sysroot"; then
3275     case "$cc_type" in
3276         gcc|llvm_gcc|clang)
3277             add_cppflags --sysroot="$sysroot"
3278             add_ldflags --sysroot="$sysroot"
3279         ;;
3280         tms470)
3281             add_cppflags -I"$sysinclude"
3282             add_ldflags  --sysroot="$sysroot"
3283         ;;
3284     esac
3285 fi
3286
3287 if test "$cpu" = host; then
3288     enabled cross_compile &&
3289         die "--cpu=host makes no sense when cross-compiling."
3290
3291     case "$cc_type" in
3292         gcc|llvm_gcc)
3293             check_native(){
3294                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3295                 sed -n "/cc1.*$1=/{
3296                             s/.*$1=\\([^ ]*\\).*/\\1/
3297                             p
3298                             q
3299                         }" $TMPE
3300             }
3301             cpu=$(check_native -march || check_native -mcpu)
3302         ;;
3303     esac
3304
3305     test "${cpu:-host}" = host &&
3306         die "--cpu=host not supported with compiler $cc"
3307 fi
3308
3309 # Deal with common $arch aliases
3310 case "$arch" in
3311     aarch64|arm64)
3312         arch="aarch64"
3313     ;;
3314     arm*)
3315         arch="arm"
3316     ;;
3317     mips*|IP*)
3318         arch="mips"
3319     ;;
3320     parisc*|hppa*)
3321         arch="parisc"
3322     ;;
3323     "Power Macintosh"|ppc*|powerpc*)
3324         arch="ppc"
3325     ;;
3326     s390|s390x)
3327         arch="s390"
3328     ;;
3329     sh4|sh)
3330         arch="sh4"
3331     ;;
3332     sun4u|sparc*)
3333         arch="sparc"
3334     ;;
3335     tilegx|tile-gx)
3336         arch="tilegx"
3337     ;;
3338     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3339         arch="x86"
3340     ;;
3341 esac
3342
3343 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3344 enable $arch
3345
3346 # Add processor-specific flags
3347 if enabled aarch64; then
3348
3349     case $cpu in
3350         armv*)
3351             cpuflags="-march=$cpu"
3352         ;;
3353         *)
3354             cpuflags="-mcpu=$cpu"
3355         ;;
3356     esac
3357
3358 elif enabled alpha; then
3359
3360     cpuflags="-mcpu=$cpu"
3361
3362 elif enabled arm; then
3363
3364     check_arm_arch() {
3365         check_cpp_condition stddef.h \
3366             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3367             $cpuflags
3368     }
3369
3370     probe_arm_arch() {
3371         if   check_arm_arch 4;        then echo armv4;
3372         elif check_arm_arch 4T;       then echo armv4t;
3373         elif check_arm_arch 5;        then echo armv5;
3374         elif check_arm_arch 5E;       then echo armv5e;
3375         elif check_arm_arch 5T;       then echo armv5t;
3376         elif check_arm_arch 5TE;      then echo armv5te;
3377         elif check_arm_arch 5TEJ;     then echo armv5te;
3378         elif check_arm_arch 6;        then echo armv6;
3379         elif check_arm_arch 6J;       then echo armv6j;
3380         elif check_arm_arch 6K;       then echo armv6k;
3381         elif check_arm_arch 6Z;       then echo armv6z;
3382         elif check_arm_arch 6ZK;      then echo armv6zk;
3383         elif check_arm_arch 6T2;      then echo armv6t2;
3384         elif check_arm_arch 7;        then echo armv7;
3385         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3386         elif check_arm_arch 7S;       then echo armv7-a;
3387         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3388         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3389         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3390         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3391         fi
3392     }
3393
3394     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3395
3396     case $cpu in
3397         armv*)
3398             cpuflags="-march=$cpu"
3399             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3400         ;;
3401         *)
3402             cpuflags="-mcpu=$cpu"
3403             case $cpu in
3404                 cortex-a*)                               subarch=armv7a  ;;
3405                 cortex-r*)                               subarch=armv7r  ;;
3406                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3407                 arm11*)                                  subarch=armv6   ;;
3408                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3409                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3410                 *)                             subarch=$(probe_arm_arch) ;;
3411             esac
3412         ;;
3413     esac
3414
3415     case "$subarch" in
3416         armv5t*)    enable fast_clz                ;;
3417         armv[6-8]*) enable fast_clz fast_unaligned ;;
3418     esac
3419
3420 elif enabled avr32; then
3421
3422     case $cpu in
3423         ap7[02]0[0-2])
3424             subarch="avr32_ap"
3425             cpuflags="-mpart=$cpu"
3426         ;;
3427         ap)
3428             subarch="avr32_ap"
3429             cpuflags="-march=$cpu"
3430         ;;
3431         uc3[ab]*)
3432             subarch="avr32_uc"
3433             cpuflags="-mcpu=$cpu"
3434         ;;
3435         uc)
3436             subarch="avr32_uc"
3437             cpuflags="-march=$cpu"
3438         ;;
3439     esac
3440
3441 elif enabled bfin; then
3442
3443     cpuflags="-mcpu=$cpu"
3444
3445 elif enabled mips; then
3446
3447     cpuflags="-march=$cpu"
3448
3449 elif enabled ppc; then
3450
3451     disable ldbrx
3452
3453     case $(tolower $cpu) in
3454         601|ppc601|powerpc601)
3455             cpuflags="-mcpu=601"
3456             disable altivec
3457         ;;
3458         603*|ppc603*|powerpc603*)
3459             cpuflags="-mcpu=603"
3460             disable altivec
3461         ;;
3462         604*|ppc604*|powerpc604*)
3463             cpuflags="-mcpu=604"
3464             disable altivec
3465         ;;
3466         g3|75*|ppc75*|powerpc75*)
3467             cpuflags="-mcpu=750"
3468             disable altivec
3469         ;;
3470         g4|745*|ppc745*|powerpc745*)
3471             cpuflags="-mcpu=7450"
3472             disable vsx
3473         ;;
3474         74*|ppc74*|powerpc74*)
3475             cpuflags="-mcpu=7400"
3476             disable vsx
3477         ;;
3478         g5|970|ppc970|powerpc970)
3479             cpuflags="-mcpu=970"
3480             disable vsx
3481         ;;
3482         power[3-6]*)
3483             cpuflags="-mcpu=$cpu"
3484             disable vsx
3485         ;;
3486         power[7-8]*)
3487             cpuflags="-mcpu=$cpu"
3488             enable ldbrx
3489         ;;
3490         cell)
3491             cpuflags="-mcpu=cell"
3492             enable ldbrx
3493             disable vsx
3494         ;;
3495         e500mc)
3496             cpuflags="-mcpu=e500mc"
3497             disable altivec
3498         ;;
3499         e500v2)
3500             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3501             disable altivec
3502             disable dcbzl
3503         ;;
3504         e500)
3505             cpuflags="-mcpu=8540 -mhard-float"
3506             disable altivec
3507             disable dcbzl
3508         ;;
3509     esac
3510
3511 elif enabled sparc; then
3512
3513     case $cpu in
3514         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3515             cpuflags="-mcpu=$cpu"
3516         ;;
3517         ultrasparc*|niagara[234])
3518             cpuflags="-mcpu=$cpu"
3519         ;;
3520     esac
3521
3522 elif enabled x86; then
3523
3524     case $cpu in
3525         i[345]86|pentium)
3526             cpuflags="-march=$cpu"
3527             disable i686
3528             disable mmx
3529         ;;
3530         # targets that do NOT support nopl and conditional mov (cmov)
3531         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3532             cpuflags="-march=$cpu"
3533             disable i686
3534         ;;
3535         # targets that do support nopl and conditional mov (cmov)
3536         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3537             cpuflags="-march=$cpu"
3538             enable i686
3539             enable fast_cmov
3540         ;;
3541         # targets that do support conditional mov but on which it's slow
3542         pentium4|pentium4m|prescott|nocona)
3543             cpuflags="-march=$cpu"
3544             enable i686
3545             disable fast_cmov
3546         ;;
3547     esac
3548
3549 fi
3550
3551 if [ "$cpu" != generic ]; then
3552     add_cflags  $cpuflags
3553     add_asflags $cpuflags
3554     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3555 fi
3556
3557 # compiler sanity check
3558 check_exec <<EOF
3559 int main(void){ return 0; }
3560 EOF
3561 if test "$?" != 0; then
3562     echo "$cc is unable to create an executable file."
3563     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3564         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3565         echo "Only do this if you know what cross compiling means."
3566     fi
3567     die "C compiler test failed."
3568 fi
3569
3570 add_cppflags -D_ISOC99_SOURCE
3571 check_cflags -std=c99
3572 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3573 #include <stdlib.h>
3574 EOF
3575 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3576 #include <stdlib.h>
3577 EOF
3578
3579 add_host_cppflags -D_ISOC99_SOURCE
3580 check_host_cflags -std=c99
3581 check_host_cflags -Wall
3582 check_host_cflags -O3
3583
3584 check_64bit(){
3585     arch32=$1
3586     arch64=$2
3587     expr=$3
3588     check_code cc "" "int test[2*($expr) - 1]" &&
3589         subarch=$arch64 || subarch=$arch32
3590 }
3591
3592 case "$arch" in
3593     aarch64|alpha|ia64)
3594         spic=$shared
3595     ;;
3596     mips)
3597         check_64bit mips mips64 '_MIPS_SIM > 1'
3598         spic=$shared
3599     ;;
3600     parisc)
3601         check_64bit parisc parisc64 'sizeof(void *) > 4'
3602         spic=$shared
3603     ;;
3604     ppc)
3605         check_64bit ppc ppc64 'sizeof(void *) > 4'
3606         spic=$shared
3607     ;;
3608     s390)
3609         check_64bit s390 s390x 'sizeof(void *) > 4'
3610         spic=$shared
3611     ;;
3612     sparc)
3613         check_64bit sparc sparc64 'sizeof(void *) > 4'
3614         spic=$shared
3615     ;;
3616     x86)
3617         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3618         if test "$subarch" = "x86_64"; then
3619             spic=$shared
3620         fi
3621     ;;
3622 esac
3623
3624 enable $subarch
3625 enabled spic && enable_weak pic
3626
3627 # OS specific
3628 case $target_os in
3629     aix)
3630         SHFLAGS=-shared
3631         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3632         enabled shared && add_ldflags -Wl,-brtl
3633         ;;
3634     android)
3635         disable symver
3636         enable section_data_rel_ro
3637         SLIB_INSTALL_NAME='$(SLIBNAME)'
3638         SLIB_INSTALL_LINKS=
3639         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3640         ;;
3641     haiku)
3642         prefix_default="/boot/common"
3643         network_extralibs="-lnetwork"
3644         host_libs=
3645         ;;
3646     sunos)
3647         SHFLAGS='-shared -Wl,-h,$$(@F)'
3648         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3649         network_extralibs="-lsocket -lnsl"
3650         # When using suncc to build, the Solaris linker will mark
3651         # an executable with each instruction set encountered by
3652         # the Solaris assembler.  As our libraries contain their own
3653         # guards for processor-specific code, instead suppress
3654         # generation of the HWCAPS ELF section on Solaris x86 only.
3655         enabled_all suncc x86 &&
3656             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3657             add_ldflags -Wl,-M,mapfile
3658         nm_default='nm -P -g'
3659         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3660         ;;
3661     netbsd)
3662         disable symver
3663         oss_indev_extralibs="-lossaudio"
3664         oss_outdev_extralibs="-lossaudio"
3665         ;;
3666     openbsd|bitrig)
3667         disable symver
3668         SHFLAGS='-shared'
3669         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3670         SLIB_INSTALL_LINKS=
3671         oss_indev_extralibs="-lossaudio"
3672         oss_outdev_extralibs="-lossaudio"
3673         ;;
3674     dragonfly)
3675         disable symver
3676         ;;
3677     freebsd)
3678         ;;
3679     bsd/os)
3680         add_extralibs -lpoll -lgnugetopt
3681         ;;
3682     darwin)
3683         enabled ppc && add_asflags -force_cpusubtype_ALL
3684         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3685         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3686         add_ldflags -Wl,-dynamic,-search_paths_first
3687         SLIBSUF=".dylib"
3688         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3689         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3690         objformat="macho"
3691         enabled x86_64 && objformat="macho64"
3692         enabled_any pic shared ||
3693             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3694         ;;
3695     msys*)
3696         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3697         ;;
3698     mingw32*)
3699         if test $target_os = "mingw32ce"; then
3700             disable network
3701         else
3702             target_os=mingw32
3703         fi
3704         LIBTARGET=i386
3705         if enabled x86_64; then
3706             LIBTARGET="i386:x86-64"
3707         elif enabled arm; then
3708             LIBTARGET=arm-wince
3709         fi
3710         check_ldflags -Wl,--nxcompat
3711         check_ldflags -Wl,--dynamicbase
3712         shlibdir_default="$bindir_default"
3713         SLIBPREF=""
3714         SLIBSUF=".dll"
3715         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3716         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3717         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3718         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3719         SLIB_INSTALL_LINKS=
3720         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3721         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3722         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3723         objformat="win32"
3724         dlltool="${cross_prefix}dlltool"
3725         ranlib=:
3726         enable dos_paths
3727         ;;
3728     win32|win64)
3729         disable symver
3730         if enabled shared; then
3731             # Link to the import library instead of the normal static library
3732             # for shared libs.
3733             LD_LIB='%.lib'
3734             # Cannot build both shared and static libs with MSVC or icl.
3735             disable static
3736         fi
3737         shlibdir_default="$bindir_default"
3738         SLIBPREF=""
3739         SLIBSUF=".dll"
3740         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3741         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3742         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3743         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3744         SLIB_INSTALL_LINKS=
3745         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3746         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3747         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3748         objformat="win32"
3749         ranlib=:
3750         enable dos_paths
3751         ;;
3752     cygwin*)
3753         target_os=cygwin
3754         shlibdir_default="$bindir_default"
3755         SLIBPREF="cyg"
3756         SLIBSUF=".dll"
3757         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3758         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3759         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3760         SLIB_INSTALL_LINKS=
3761         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3762         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3763         objformat="win32"
3764         enable dos_paths
3765         ;;
3766     *-dos|freedos|opendos)
3767         network_extralibs="-lsocket"
3768         objformat="coff"
3769         enable dos_paths
3770         add_cppflags -U__STRICT_ANSI__
3771         ;;
3772     linux)
3773         enable dv1394
3774         enable section_data_rel_ro
3775         ;;
3776     irix*)
3777         target_os=irix
3778         ranlib="echo ignoring ranlib"
3779         ;;
3780     os/2*)
3781         ln_s="cp -f"
3782         objformat="aout"
3783         add_cppflags -D_GNU_SOURCE
3784         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3785         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3786         LIBSUF="_s.a"
3787         SLIBPREF=""
3788         SLIBSUF=".dll"
3789         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3790         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3791         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3792             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3793             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3794             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3795             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3796         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3797             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3798         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3799         enable dos_paths
3800         ;;
3801     gnu/kfreebsd)
3802         add_cppflags -D_BSD_SOURCE
3803         ;;
3804     gnu)
3805         ;;
3806     qnx)
3807         add_cppflags -D_QNX_SOURCE
3808         network_extralibs="-lsocket"
3809         ;;
3810     symbian)
3811         SLIBSUF=".dll"
3812         enable dos_paths
3813         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3814         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3815         add_ldflags -Wl,--target1-abs,--no-undefined \
3816                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3817                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3818         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3819                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3820                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3821         ;;
3822     osf1)
3823         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3824         ;;
3825     minix)
3826         ;;
3827     plan9)
3828         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3829                      -D_REENTRANT_SOURCE        \
3830                      -D_RESEARCH_SOURCE         \
3831                      -DFD_SETSIZE=96            \
3832                      -DHAVE_SOCK_OPTS
3833         add_compat strtod.o strtod=avpriv_strtod
3834         network_extralibs='-lbsd'
3835         exeobjs=compat/plan9/main.o
3836         cp_f='cp'
3837         ;;
3838     none)
3839         ;;
3840     *)
3841         die "Unknown OS '$target_os'."
3842         ;;
3843 esac
3844
3845 # determine libc flavour
3846
3847 probe_libc(){
3848     pfx=$1
3849     pfx_no_=${pfx%_}
3850     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3851     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3852         eval ${pfx}libc_type=uclibc
3853         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3854     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3855         eval ${pfx}libc_type=glibc
3856         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3857     # MinGW headers can be installed on Cygwin, so check for newlib first.
3858     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3859         eval ${pfx}libc_type=newlib
3860         add_${pfx}cppflags -U__STRICT_ANSI__
3861     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3862     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3863         eval ${pfx}libc_type=mingw64
3864         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3865         eval test \$${pfx_no_}cc_type = "gcc" &&
3866             add_${pfx}cppflags -D__printf__=__gnu_printf__
3867     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3868          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3869         eval ${pfx}libc_type=mingw32
3870         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3871             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3872             die "ERROR: MinGW32 runtime version must be >= 3.15."
3873         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3874         eval test \$${pfx_no_}cc_type = "gcc" &&
3875             add_${pfx}cppflags -D__printf__=__gnu_printf__
3876     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3877         eval ${pfx}libc_type=msvcrt
3878         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3879             if [ "$pfx" = host_ ]; then
3880                 add_host_cppflags -Dsnprintf=_snprintf
3881             else
3882                 add_compat strtod.o strtod=avpriv_strtod
3883                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3884                                              _snprintf=avpriv_snprintf  \
3885                                              vsnprintf=avpriv_vsnprintf
3886             fi
3887         fi
3888         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3889         # 0x601 by default unless something else is set by the user.
3890         # This can easily lead to us detecting functions only present
3891         # in such new versions and producing binaries requiring windows 7.0.
3892         # Therefore explicitly set the default to XP unless the user has
3893         # set something else on the command line.
3894         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3895         # family. For these cases, configure is free to use any functions
3896         # found in the SDK headers by default. (Alternatively, we could force
3897         # _WIN32_WINNT to 0x0602 in that case.)
3898         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3899             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3900 #ifdef WINAPI_FAMILY
3901 #include <winapifamily.h>
3902 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3903 #error not desktop
3904 #endif
3905 #endif
3906 EOF
3907     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3908         eval ${pfx}libc_type=klibc
3909     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3910         eval ${pfx}libc_type=bionic
3911     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3912         eval ${pfx}libc_type=solaris
3913         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3914     else
3915         eval ${pfx}libc_type=default
3916         add_${pfx}cppflags -D_DEFAULT_SOURCE
3917     fi
3918 }
3919
3920 probe_libc
3921 test -n "$libc_type" && enable libc_$libc_type
3922 probe_libc host_
3923 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3924
3925 case $libc_type in
3926     bionic)
3927         add_compat strtod.o strtod=avpriv_strtod
3928         ;;
3929 esac
3930
3931 # hacks for compiler/libc/os combinations
3932
3933 if enabled_all tms470 libc_glibc; then
3934     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3935     add_cppflags -D__USER_LABEL_PREFIX__=
3936     add_cppflags -D__builtin_memset=memset
3937     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3938     add_cflags   -pds=48    # incompatible redefinition of macro
3939 fi
3940
3941 if enabled_all ccc libc_glibc; then
3942     add_ldflags -Wl,-z,now  # calls to libots crash without this
3943 fi
3944
3945 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3946     add_cppflags '-I\$(SRC_PATH)/compat/float'
3947
3948 esc(){
3949     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3950 }
3951
3952 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3953
3954 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3955
3956 set_default $PATHS_LIST
3957 set_default nm
3958
3959 # we need to build at least one lib type
3960 if ! enabled_any static shared; then
3961     cat <<EOF
3962 At least one library type must be built.
3963 Specify --enable-static to build the static libraries or --enable-shared to
3964 build the shared libraries as well. To only build the shared libraries specify
3965 --disable-static in addition to --enable-shared.
3966 EOF
3967     exit 1;
3968 fi
3969
3970 die_license_disabled() {
3971     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3972 }
3973
3974 die_license_disabled gpl libcdio
3975 die_license_disabled gpl libx264
3976 die_license_disabled gpl libx265
3977 die_license_disabled gpl libxavs
3978 die_license_disabled gpl libxvid
3979 die_license_disabled gpl x11grab
3980
3981 die_license_disabled nonfree libfaac
3982 die_license_disabled nonfree libfdk_aac
3983 die_license_disabled nonfree nvenc
3984 die_license_disabled nonfree openssl
3985
3986 die_license_disabled version3 libopencore_amrnb
3987 die_license_disabled version3 libopencore_amrwb
3988 die_license_disabled version3 libvo_aacenc
3989 die_license_disabled version3 libvo_amrwbenc
3990
3991 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3992
3993 disabled optimizations || check_cflags -fomit-frame-pointer
3994
3995 enable_weak_pic() {
3996     disabled pic && return
3997     enable pic
3998     add_cppflags -DPIC
3999     case "$target_os" in
4000     mingw*|cygwin*)
4001         ;;
4002     *)
4003         add_cflags -fPIC
4004         ;;
4005     esac
4006     add_asflags  -fPIC
4007 }
4008
4009 enabled pic && enable_weak_pic
4010
4011 check_cc <<EOF || die "Symbol mangling check failed."
4012 int ff_extern;
4013 EOF
4014 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4015 extern_prefix=${sym%%ff_extern*}
4016
4017 check_cc <<EOF && enable_weak inline_asm
4018 void foo(void) { __asm__ volatile ("" ::); }
4019 EOF
4020
4021 _restrict=
4022 for restrict_keyword in restrict __restrict__ __restrict; do
4023     check_cc <<EOF && _restrict=$restrict_keyword && break
4024 void foo(char * $restrict_keyword p);
4025 EOF
4026 done
4027
4028 check_cc <<EOF && enable pragma_deprecated
4029 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4030 EOF
4031
4032 check_cc <<EOF && enable attribute_packed
4033 struct { int x; } __attribute__((packed)) x;
4034 EOF
4035
4036 check_cc <<EOF && enable attribute_may_alias
4037 union { int x; } __attribute__((may_alias)) x;
4038 EOF
4039
4040 check_cc <<EOF || die "endian test failed"
4041 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4042 EOF
4043 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4044
4045 check_gas() {
4046     log "check_gas using '$as' as AS"
4047     # :vararg is used on aarch64, arm and ppc altivec
4048     check_as <<EOF || return 1
4049 .macro m n, y:vararg=0
4050 \n: .int \y
4051 .endm
4052 m x
4053 EOF
4054     # .altmacro is only used in arm asm
4055     ! enabled arm || check_as <<EOF || return 1
4056 .altmacro
4057 EOF
4058     enable gnu_as
4059     return 0
4060 }
4061
4062 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4063     nogas=:
4064     enabled_any arm aarch64 && nogas=die
4065     enabled_all ppc altivec && nogas=warn
4066     as_noop=-v
4067
4068     case $as_type in
4069         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4070         gcc)  gaspp_as_type=gas ;;
4071         *)    gaspp_as_type=$as_type ;;