015bd612e05cddbcbdffe765ec830ac57a9a6b53
[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 Individual component options:
136   --disable-everything     disable all components listed below
137   --disable-encoder=NAME   disable encoder NAME
138   --enable-encoder=NAME    enable encoder NAME
139   --disable-encoders       disable all encoders
140   --disable-decoder=NAME   disable decoder NAME
141   --enable-decoder=NAME    enable decoder NAME
142   --disable-decoders       disable all decoders
143   --disable-hwaccel=NAME   disable hwaccel NAME
144   --enable-hwaccel=NAME    enable hwaccel NAME
145   --disable-hwaccels       disable all hwaccels
146   --disable-muxer=NAME     disable muxer NAME
147   --enable-muxer=NAME      enable muxer NAME
148   --disable-muxers         disable all muxers
149   --disable-demuxer=NAME   disable demuxer NAME
150   --enable-demuxer=NAME    enable demuxer NAME
151   --disable-demuxers       disable all demuxers
152   --enable-parser=NAME     enable parser NAME
153   --disable-parser=NAME    disable parser NAME
154   --disable-parsers        disable all parsers
155   --enable-bsf=NAME        enable bitstream filter NAME
156   --disable-bsf=NAME       disable bitstream filter NAME
157   --disable-bsfs           disable all bitstream filters
158   --enable-protocol=NAME   enable protocol NAME
159   --disable-protocol=NAME  disable protocol NAME
160   --disable-protocols      disable all protocols
161   --enable-indev=NAME      enable input device NAME
162   --disable-indev=NAME     disable input device NAME
163   --disable-indevs         disable input devices
164   --enable-outdev=NAME     enable output device NAME
165   --disable-outdev=NAME    disable output device NAME
166   --disable-outdevs        disable output devices
167   --disable-devices        disable all devices
168   --enable-filter=NAME     enable filter NAME
169   --disable-filter=NAME    disable filter NAME
170   --disable-filters        disable all filters
171
172 External library support:
173
174   Using any of the following switches will allow Libav to link to the
175   corresponding external library. All the components depending on that library
176   will become enabled, if all their other dependencies are met and they are not
177   explicitly disabled. E.g. --enable-libwavpack will enable linking to
178   libwavpack and allow the libwavpack encoder to be built, unless it is
179   specifically disabled with --disable-encoder=libwavpack.
180
181   Note that only the system libraries are auto-detected. All the other external
182   libraries must be explicitly enabled.
183
184   Also note that the following help text describes the purpose of the libraries
185   themselves, not all their features will necessarily be usable by Libav.
186
187   --enable-avisynth          video frameserver
188   --enable-bzlib             bzip2 compression [autodetect]
189   --enable-frei0r            video filtering plugins
190   --enable-gnutls            crypto
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libkvazaar        HEVC video encoding
202   --enable-libmp3lame        MP3 audio encoding
203   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
204   --enable-libopencore-amrwb AMR-WB audio decoding
205   --enable-libopencv         computer vision
206   --enable-libopenh264       H.264 video encoding/decoding
207   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
208   --enable-libopus           Opus audio encoding/decoding
209   --enable-libpulse          Pulseaudio sound server
210   --enable-librtmp           RTMP streaming
211   --enable-libschroedinger   Dirac video encoding/decoding
212   --enable-libsnappy         snappy compression
213   --enable-libspeex          Speex audio encoding/decoding
214   --enable-libtheora         Theora video encoding/decoding
215   --enable-libtwolame        MP2 audio encoding
216   --enable-libvo-aacenc      AAC audio encoding
217   --enable-libvo-amrwbenc    AMR-WB audio encoding
218   --enable-libvorbis         Vorbis audio encoding/decoding
219   --enable-libvpx            VP* video encoding/decoding
220   --enable-libwavpack        Wavpack audio encoding/decoding
221   --enable-libwebp           WebP image encoding/decoding
222   --enable-libx264           H.264 video encoding
223   --enable-libx265           HEVC video encoding
224   --enable-libxavs           Chinese AVS video encoding
225   --enable-libxcb            X window system protocol communication
226   --enable-libxcb-shm        X11 shm communication [auto]
227   --enable-libxcb-xfixes     X11 mouse rendering [auto]
228   --enable-libxvid           MPEG-4 ASP video encoding
229   --enable-openssl           crypto
230   --enable-x11grab           X11 grabbing through xlib (legacy, use xcb instead)
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-cuda    Nvidia CUDA (dynamically linked)
235   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
236   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
237   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
238   --enable-libnpp  Nvidia CUDA processing
239   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
240   --enable-nvenc   Nvidia video encoding
241   --enable-omx     OpenMAX IL
242   --enable-omx-rpi OpenMAX IL for Raspberry Pi
243   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
244   --enable-vda     Apple Video Decode Acceleration [auto]
245   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
246
247 Toolchain options:
248   --arch=ARCH              select architecture [$arch]
249   --cpu=CPU                select the minimum required CPU (affects
250                            instruction selection, may crash on older CPUs)
251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
252   --enable-cross-compile   assume a cross-compiler is used
253   --sysroot=PATH           root of cross-build tree
254   --sysinclude=PATH        location of cross-build system headers
255   --target-os=OS           compiler targets OS [$target_os]
256   --target-exec=CMD        command to run executables on target
257   --target-path=DIR        path to view of build directory on target
258   --target-samples=DIR     path to samples directory on target
259   --toolchain=NAME         set tool defaults according to NAME
260   --nm=NM                  use nm tool
261   --ar=AR                  use archive tool AR [$ar_default]
262   --as=AS                  use assembler AS [$as_default]
263   --cc=CC                  use C compiler CC [$cc_default]
264   --objcc=OCC              use ObjC compiler OCC [$cc_default]
265   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
266   --ld=LD                  use linker LD
267   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
268   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
269   --host-cc=HOSTCC         use host C compiler HOSTCC
270   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
271   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
272   --host-ld=HOSTLD         use host linker HOSTLD
273   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
274   --host-libs=HLIBS        use libs HLIBS when linking for host
275   --host-os=OS             compiler host OS [$target_os]
276   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
277   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
278   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
279   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
280   --extra-libs=ELIBS       add ELIBS [$ELIBS]
281   --extra-version=STRING   version string suffix []
282   --optflags=OPTFLAGS      override optimization-related compiler flags
283   --build-suffix=SUFFIX    library name suffix []
284   --enable-pic             build position-independent code
285   --enable-thumb           compile for Thumb instruction set
286   --enable-lto             use link-time optimization
287   --env="ENV=override"     override the environment variables
288
289 Advanced options (experts only):
290   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
291   --custom-allocator=NAME  use a supported custom allocator
292   --disable-symver         disable symbol versioning
293   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
294   --disable-safe-bitstream-reader
295                            disable buffer boundary checking in bitreaders
296                            (faster, but may crash)
297   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
298   --enable-sram            allow use of on-chip SRAM
299
300 Optimization options (experts only):
301   --disable-asm            disable all assembly optimizations
302   --disable-altivec        disable AltiVec optimizations
303   --disable-vsx            disable VSX optimizations
304   --disable-power8         disable POWER8 optimizations
305   --disable-amd3dnow       disable 3DNow! optimizations
306   --disable-amd3dnowext    disable 3DNow! extended optimizations
307   --disable-mmx            disable MMX optimizations
308   --disable-mmxext         disable MMXEXT optimizations
309   --disable-sse            disable SSE optimizations
310   --disable-sse2           disable SSE2 optimizations
311   --disable-sse3           disable SSE3 optimizations
312   --disable-ssse3          disable SSSE3 optimizations
313   --disable-sse4           disable SSE4 optimizations
314   --disable-sse42          disable SSE4.2 optimizations
315   --disable-avx            disable AVX optimizations
316   --disable-xop            disable XOP optimizations
317   --disable-fma3           disable FMA3 optimizations
318   --disable-fma4           disable FMA4 optimizations
319   --disable-avx2           disable AVX2 optimizations
320   --disable-armv5te        disable armv5te optimizations
321   --disable-armv6          disable armv6 optimizations
322   --disable-armv6t2        disable armv6t2 optimizations
323   --disable-vfp            disable VFP optimizations
324   --disable-neon           disable NEON optimizations
325   --disable-inline-asm     disable use of inline assembly
326   --disable-yasm           disable use of nasm/yasm assembly
327
328 Developer options (useful when working on Libav itself):
329   --disable-debug          disable debugging symbols
330   --enable-debug=LEVEL     set the debug level [$debuglevel]
331   --disable-optimizations  disable compiler optimizations
332   --enable-extra-warnings  enable more compiler warnings
333   --samples=PATH           location of test samples for FATE, if not set use
334                            \$LIBAV_SAMPLES at make invocation time.
335   --enable-neon-clobber-test check NEON registers for clobbering (should be
336                            used only for debugging purposes)
337   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
338                            should be used only for debugging purposes)
339   --enable-random          randomly enable/disable components
340   --disable-random
341   --enable-random=LIST     randomly enable/disable specific components or
342   --disable-random=LIST    component groups. LIST is a comma-separated list
343                            of NAME[:PROB] entries where NAME is a component
344                            (group) and PROB the probability associated with
345                            NAME (default 0.5).
346   --random-seed=VALUE      seed value for --enable/disable-random
347   --disable-valgrind-backtrace do not print a backtrace under Valgrind
348                            (only applies to --disable-optimizations builds)
349
350 NOTE: Object files are built at the place where configure is launched.
351 EOF
352   exit 0
353 }
354
355 quotes='""'
356
357 log(){
358     echo "$@" >> $logfile
359 }
360
361 log_file(){
362     log BEGIN $1
363     i=1
364     while read line; do
365         printf '%5s   %s\n' "${i}" "${line}"
366         i=$(($i+1))
367     done < $1 >> $logfile
368     log END $1
369 }
370
371 echolog(){
372     log "$@"
373     echo "$@"
374 }
375
376 warn(){
377     log "WARNING: $*"
378     WARNINGS="${WARNINGS}WARNING: $*\n"
379 }
380
381 die(){
382     echolog "$@"
383     cat <<EOF
384
385 If you think configure made a mistake, make sure you are using the latest
386 version from Git.  If the latest version fails, report the problem to the
387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
388 EOF
389     if disabled logging; then
390         cat <<EOF
391 Rerun configure with logging enabled (do not use --disable-logging), and
392 include the log this produces with your report.
393 EOF
394     else
395         cat <<EOF
396 Include the log file "$logfile" produced by configure as this will help
397 solving the problem.
398 EOF
399     fi
400     exit 1
401 }
402
403 # Avoid locale weirdness, besides we really just want to translate ASCII.
404 toupper(){
405     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
406 }
407
408 tolower(){
409     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
410 }
411
412 c_escape(){
413     echo "$*" | sed 's/["\\]/\\\0/g'
414 }
415
416 sh_quote(){
417     v=$(echo "$1" | sed "s/'/'\\\\''/g")
418     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
419     echo "$v"
420 }
421
422 cleanws(){
423     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
424 }
425
426 filter(){
427     pat=$1
428     shift
429     for v; do
430         eval "case $v in $pat) echo $v ;; esac"
431     done
432 }
433
434 filter_out(){
435     pat=$1
436     shift
437     for v; do
438         eval "case $v in $pat) ;; *) echo $v ;; esac"
439     done
440 }
441
442 map(){
443     m=$1
444     shift
445     for v; do eval $m; done
446 }
447
448 add_suffix(){
449     suffix=$1
450     shift
451     for v; do echo ${v}${suffix}; done
452 }
453
454 set_all(){
455     value=$1
456     shift
457     for var in $*; do
458         eval $var=$value
459     done
460 }
461
462 set_weak(){
463     value=$1
464     shift
465     for var; do
466         eval : \${$var:=$value}
467     done
468 }
469
470 sanitize_var_name(){
471     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
472 }
473
474 set_safe(){
475     var=$1
476     shift
477     eval $(sanitize_var_name "$var")='$*'
478 }
479
480 get_safe(){
481     eval echo \$$(sanitize_var_name "$1")
482 }
483
484 pushvar(){
485     for pvar in $*; do
486         eval level=\${${pvar}_level:=0}
487         eval ${pvar}_${level}="\$$pvar"
488         eval ${pvar}_level=$(($level+1))
489     done
490 }
491
492 popvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:-0}
495         test $level = 0 && continue
496         eval level=$(($level-1))
497         eval $pvar="\${${pvar}_${level}}"
498         eval ${pvar}_level=$level
499         eval unset ${pvar}_${level}
500     done
501 }
502
503 enable(){
504     set_all yes $*
505 }
506
507 disable(){
508     set_all no $*
509 }
510
511 enable_weak(){
512     set_weak yes $*
513 }
514
515 disable_weak(){
516     set_weak no $*
517 }
518
519 enable_safe(){
520     for var; do
521         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
522     done
523 }
524
525 disable_safe(){
526     for var; do
527         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 do_enable_deep(){
532     for var; do
533         enabled $var && continue
534         eval sel="\$${var}_select"
535         eval sgs="\$${var}_suggest"
536         pushvar var sgs
537         enable_deep $sel
538         popvar sgs
539         enable_deep_weak $sgs
540         popvar var
541     done
542 }
543
544 enable_deep(){
545     do_enable_deep $*
546     enable $*
547 }
548
549 enable_deep_weak(){
550     for var; do
551         disabled $var && continue
552         pushvar var
553         do_enable_deep $var
554         popvar var
555         enable_weak $var
556     done
557 }
558
559 enabled(){
560     test "${1#!}" = "$1" && op== || op=!=
561     eval test "x\$${1#!}" $op "xyes"
562 }
563
564 disabled(){
565     test "${1#!}" = "$1" && op== || op=!=
566     eval test "x\$${1#!}" $op "xno"
567 }
568
569 enabled_all(){
570     for opt; do
571         enabled $opt || return 1
572     done
573 }
574
575 disabled_all(){
576     for opt; do
577         disabled $opt || return 1
578     done
579 }
580
581 enabled_any(){
582     for opt; do
583         enabled $opt && return 0
584     done
585 }
586
587 disabled_any(){
588     for opt; do
589         disabled $opt && return 0
590     done
591     return 1
592 }
593
594 set_default(){
595     for opt; do
596         eval : \${$opt:=\$${opt}_default}
597     done
598 }
599
600 is_in(){
601     value=$1
602     shift
603     for var in $*; do
604         [ $var = $value ] && return 0
605     done
606     return 1
607 }
608
609 do_check_deps(){
610     for cfg; do
611         cfg="${cfg#!}"
612         enabled ${cfg}_checking && die "Circular dependency for $cfg."
613         disabled ${cfg}_checking && continue
614         enable ${cfg}_checking
615         append allopts $cfg
616
617         eval dep_all="\$${cfg}_deps"
618         eval dep_any="\$${cfg}_deps_any"
619         eval dep_sel="\$${cfg}_select"
620         eval dep_sgs="\$${cfg}_suggest"
621         eval dep_ifa="\$${cfg}_if"
622         eval dep_ifn="\$${cfg}_if_any"
623
624         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
625         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
626         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627
628         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
629         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
630         enabled_all  $dep_all || disable $cfg
631         enabled_any  $dep_any || disable $cfg
632         disabled_any $dep_sel && disable $cfg
633
634         if enabled $cfg; then
635             enable_deep $dep_sel
636             enable_deep_weak $dep_sgs
637         fi
638
639         disable ${cfg}_checking
640     done
641 }
642
643 check_deps(){
644     unset allopts
645
646     do_check_deps "$@"
647
648     for cfg in $allopts; do
649         enabled $cfg || continue
650         eval dep_extralibs="\$${cfg}_extralibs"
651         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 add_cppflags(){
710     append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714     append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_asflags(){
718     append ASFLAGS $($asflags_filter "$@")
719 }
720
721 add_objcflags(){
722     append OBJCFLAGS $($objcflags_filter "$@")
723 }
724
725 add_ldflags(){
726     append LDFLAGS $($ldflags_filter "$@")
727 }
728
729 add_ldexeflags(){
730     append LDEXEFLAGS $($ldflags_filter "$@")
731 }
732
733 add_stripflags(){
734     append STRIPFLAGS "$@"
735 }
736
737 add_extralibs(){
738     prepend extralibs $($ldflags_filter "$@")
739 }
740
741 add_host_cppflags(){
742     append host_cppflags "$@"
743 }
744
745 add_host_cflags(){
746     append host_cflags $($host_cflags_filter "$@")
747 }
748
749 add_host_ldflags(){
750     append host_ldflags $($host_ldflags_filter "$@")
751 }
752
753 add_compat(){
754     append compat_objs $1
755     shift
756     map 'add_cppflags -D$v' "$@"
757 }
758
759 check_cmd(){
760     log "$@"
761     "$@" >> $logfile 2>&1
762 }
763
764 cc_o(){
765     eval printf '%s\\n' $CC_O
766 }
767
768 cc_e(){
769     eval printf '%s\\n' $CC_E
770 }
771
772 check_cc(){
773     log check_cc "$@"
774     cat > $TMPC
775     log_file $TMPC
776     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
777 }
778
779 check_objcc(){
780     log check_objcc "$@"
781     cat > $TMPC
782     log_file $TMPC
783     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
784 }
785
786 check_cpp(){
787     log check_cpp "$@"
788     cat > $TMPC
789     log_file $TMPC
790     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
791 }
792
793 as_o(){
794     eval printf '%s\\n' $AS_O
795 }
796
797 check_as(){
798     log check_as "$@"
799     cat > $TMPS
800     log_file $TMPS
801     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
802 }
803
804 check_inline_asm(){
805     log check_inline_asm "$@"
806     name="$1"
807     code="$2"
808     shift 2
809     disable $name
810     check_cc "$@" <<EOF && enable $name
811 void foo(void){ __asm__ volatile($code); }
812 EOF
813 }
814
815 check_insn(){
816     log check_insn "$@"
817     check_inline_asm ${1}_inline "\"$2\""
818     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
819 }
820
821 check_yasm(){
822     log check_yasm "$@"
823     echo "$1" > $TMPS
824     log_file $TMPS
825     shift 1
826     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
827 }
828
829 ld_o(){
830     eval printf '%s\\n' $LD_O
831 }
832
833 check_ld(){
834     log check_ld "$@"
835     flags=$(filter_out '-l*' "$@")
836     libs=$(filter '-l*' "$@")
837     check_cc $($cflags_filter $flags) || return
838     flags=$($ldflags_filter $flags)
839     libs=$($ldflags_filter $libs)
840     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
841 }
842
843 print_include(){
844     hdr=$1
845     test "${hdr%.h}" = "${hdr}" &&
846         echo "#include $hdr"    ||
847         echo "#include <$hdr>"
848 }
849
850 check_code(){
851     log check_code "$@"
852     check=$1
853     headers=$2
854     code=$3
855     shift 3
856     {
857         for hdr in $headers; do
858             print_include $hdr
859         done
860         echo "int main(void) { $code; return 0; }"
861     } | check_$check "$@"
862 }
863
864 check_cppflags(){
865     log check_cppflags "$@"
866     check_cc "$@" <<EOF && append CPPFLAGS "$@"
867 int x;
868 EOF
869 }
870
871 test_cflags(){
872     log test_cflags "$@"
873     set -- $($cflags_filter "$@")
874     check_cc "$@" <<EOF
875 int x;
876 EOF
877 }
878
879 check_cflags(){
880     log check_cflags "$@"
881     test_cflags "$@" && add_cflags "$@"
882 }
883
884 test_objcflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_objcc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_objcflags(){
893     log check_cflags "$@"
894     test_objcflags "$@" && add_objcflags "$@"
895 }
896
897 test_ldflags(){
898     log test_ldflags "$@"
899     check_ld "$@" <<EOF
900 int main(void){ return 0; }
901 EOF
902 }
903
904 check_ldflags(){
905     log check_ldflags "$@"
906     test_ldflags "$@" && add_ldflags "$@"
907 }
908
909 test_stripflags(){
910     log test_stripflags "$@"
911     # call check_cc to get a fresh TMPO
912     check_cc <<EOF
913 int main(void) { return 0; }
914 EOF
915     check_cmd $strip $STRIPFLAGS "$@" $TMPO
916 }
917
918 check_stripflags(){
919     log check_stripflags "$@"
920     test_stripflags "$@" && add_stripflags "$@"
921 }
922
923 check_header(){
924     log check_header "$@"
925     header=$1
926     shift
927     disable_safe $header
928     check_cpp "$@" <<EOF && enable_safe $header
929 #include <$header>
930 int x;
931 EOF
932 }
933
934 check_func(){
935     log check_func "$@"
936     func=$1
937     shift
938     disable $func
939     check_ld "$@" <<EOF && enable $func
940 extern int $func();
941 int main(void){ $func(); }
942 EOF
943 }
944
945 check_mathfunc(){
946     log check_mathfunc "$@"
947     func=$1
948     narg=$2
949     shift 2
950     test $narg = 2 && args="f, g" || args="f"
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 #include <math.h>
954 float foo(float f, float g) { return $func($args); }
955 int main(void){ return 0; }
956 EOF
957 }
958
959 check_func_headers(){
960     log check_func_headers "$@"
961     headers=$1
962     funcs=$2
963     shift 2
964     {
965         for hdr in $headers; do
966             print_include $hdr
967         done
968         for func in $funcs; do
969             echo "long check_$func(void) { return (long) $func; }"
970         done
971         echo "int main(void) { return 0; }"
972     } | check_ld "$@" && enable $funcs && enable_safe $headers
973 }
974
975 check_cpp_condition(){
976     log check_cpp_condition "$@"
977     header=$1
978     condition=$2
979     shift 2
980     check_cpp "$@" <<EOF
981 #include <$header>
982 #if !($condition)
983 #error "unsatisfied condition: $condition"
984 #endif
985 EOF
986 }
987
988 check_lib(){
989     log check_lib "$@"
990     header="$1"
991     func="$2"
992     shift 2
993     check_header $header && check_func $func "$@" && add_extralibs "$@"
994 }
995
996 check_lib2(){
997     log check_lib2 "$@"
998     headers="$1"
999     funcs="$2"
1000     shift 2
1001     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1002 }
1003
1004 check_pkg_config(){
1005     log check_pkg_config "$@"
1006     pkg="$1"
1007     headers="$2"
1008     funcs="$3"
1009     shift 3
1010     check_cmd $pkg_config --exists --print-errors $pkg || return
1011     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1012     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1013     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1014         set_safe "${pkg}_cflags" $pkg_cflags   &&
1015         set_safe "${pkg}_libs"   $pkg_libs
1016 }
1017
1018 check_exec(){
1019     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1020 }
1021
1022 check_exec_crash(){
1023     code=$(cat)
1024
1025     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1026     # are safe but may not be available everywhere.  Thus we use
1027     # raise(SIGTERM) instead.  The check is run in a subshell so we
1028     # can redirect the "Terminated" message from the shell.  SIGBUS
1029     # is not defined by standard C so it is used conditionally.
1030
1031     (check_exec "$@") >> $logfile 2>&1 <<EOF
1032 #include <signal.h>
1033 static void sighandler(int sig){
1034     raise(SIGTERM);
1035 }
1036 int foo(void){
1037     $code
1038 }
1039 int (*func_ptr)(void) = foo;
1040 int main(void){
1041     signal(SIGILL, sighandler);
1042     signal(SIGFPE, sighandler);
1043     signal(SIGSEGV, sighandler);
1044 #ifdef SIGBUS
1045     signal(SIGBUS, sighandler);
1046 #endif
1047     return func_ptr();
1048 }
1049 EOF
1050 }
1051
1052 check_type(){
1053     log check_type "$@"
1054     headers=$1
1055     type=$2
1056     shift 2
1057     disable_safe "$type"
1058     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1059 }
1060
1061 check_struct(){
1062     log check_struct "$@"
1063     headers=$1
1064     struct=$2
1065     member=$3
1066     shift 3
1067     disable_safe "${struct}_${member}"
1068     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1069         enable_safe "${struct}_${member}"
1070 }
1071
1072 check_builtin(){
1073     log check_builtin "$@"
1074     name=$1
1075     headers=$2
1076     builtin=$3
1077     shift 3
1078     disable "$name"
1079     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1080 }
1081
1082 check_compile_assert(){
1083     log check_compile_assert "$@"
1084     name=$1
1085     headers=$2
1086     condition=$3
1087     shift 3
1088     disable "$name"
1089     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1090 }
1091
1092 require(){
1093     name="$1"
1094     header="$2"
1095     func="$3"
1096     shift 3
1097     check_lib $header $func "$@" || die "ERROR: $name not found"
1098 }
1099
1100 require2(){
1101     name="$1"
1102     headers="$2"
1103     func="$3"
1104     shift 3
1105     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109     pkg="$1"
1110     check_pkg_config "$@" || die "ERROR: $pkg not found"
1111     add_cflags    $(get_safe "${pkg}_cflags")
1112     add_extralibs $(get_safe "${pkg}_libs")
1113 }
1114
1115 hostcc_e(){
1116     eval printf '%s\\n' $HOSTCC_E
1117 }
1118
1119 hostcc_o(){
1120     eval printf '%s\\n' $HOSTCC_O
1121 }
1122
1123 check_host_cc(){
1124     log check_host_cc "$@"
1125     cat > $TMPC
1126     log_file $TMPC
1127     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1128 }
1129
1130 check_host_cpp(){
1131     log check_host_cpp "$@"
1132     cat > $TMPC
1133     log_file $TMPC
1134     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1135 }
1136
1137 check_host_cppflags(){
1138     log check_host_cppflags "$@"
1139     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1140 int x;
1141 EOF
1142 }
1143
1144 check_host_cflags(){
1145     log check_host_cflags "$@"
1146     set -- $($host_cflags_filter "$@")
1147     check_host_cc "$@" <<EOF && append host_cflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cpp_condition(){
1153     log check_host_cpp_condition "$@"
1154     header=$1
1155     condition=$2
1156     shift 2
1157     check_host_cpp "$@" <<EOF
1158 #include <$header>
1159 #if !($condition)
1160 #error "unsatisfied condition: $condition"
1161 #endif
1162 EOF
1163 }
1164
1165 apply(){
1166     file=$1
1167     shift
1168     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1169 }
1170
1171 cp_if_changed(){
1172     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1173     mkdir -p "$(dirname $2)"
1174     $cp_f "$1" "$2"
1175 }
1176
1177 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1178 # system-dependent things.
1179
1180 AVCODEC_COMPONENTS="
1181     bsfs
1182     decoders
1183     encoders
1184     hwaccels
1185     parsers
1186 "
1187
1188 AVDEVICE_COMPONENTS="
1189     indevs
1190     outdevs
1191 "
1192 AVFILTER_COMPONENTS="
1193     filters
1194 "
1195 AVFORMAT_COMPONENTS="
1196     demuxers
1197     muxers
1198     protocols
1199 "
1200
1201 AVRESAMPLE_COMPONENTS=""
1202 AVUTIL_COMPONENTS=""
1203
1204 COMPONENT_LIST="
1205     $AVCODEC_COMPONENTS
1206     $AVDEVICE_COMPONENTS
1207     $AVFILTER_COMPONENTS
1208     $AVFORMAT_COMPONENTS
1209     $AVRESAMPLE_COMPONENTS
1210     $AVUTIL_COMPONENTS
1211 "
1212
1213 EXAMPLE_LIST="
1214     avcodec_example
1215     filter_audio_example
1216     metadata_example
1217     output_example
1218     qsvdec_example
1219     transcode_aac_example
1220 "
1221
1222 HWACCEL_LIBRARY_LIST="
1223     cuda
1224     d3d11va
1225     dxva2
1226     libmfx
1227     libnpp
1228     mmal
1229     nvenc
1230     omx
1231     vaapi
1232     vda
1233     vdpau
1234 "
1235
1236 EXTERNAL_LIBRARY_LIST="
1237     avisynth
1238     bzlib
1239     frei0r
1240     gnutls
1241     libbs2b
1242     libcdio
1243     libdc1394
1244     libdcadec
1245     libfaac
1246     libfdk_aac
1247     libfontconfig
1248     libfreetype
1249     libgsm
1250     libilbc
1251     libkvazaar
1252     libmp3lame
1253     libopencore_amrnb
1254     libopencore_amrwb
1255     libopencv
1256     libopenh264
1257     libopenjpeg
1258     libopus
1259     libpulse
1260     librtmp
1261     libschroedinger
1262     libsnappy
1263     libspeex
1264     libtheora
1265     libtwolame
1266     libvo_aacenc
1267     libvo_amrwbenc
1268     libvorbis
1269     libvpx
1270     libwavpack
1271     libwebp
1272     libx264
1273     libx265
1274     libxavs
1275     libxcb
1276     libxcb_shm
1277     libxcb_xfixes
1278     libxvid
1279     openssl
1280     x11grab
1281     zlib
1282 "
1283
1284 FEATURE_LIST="
1285     gray
1286     hardcoded_tables
1287     omx_rpi
1288     runtime_cpudetect
1289     safe_bitstream_reader
1290     shared
1291     small
1292     sram
1293     static
1294     swscale_alpha
1295 "
1296
1297 LIBRARY_LIST="
1298     avcodec
1299     avdevice
1300     avfilter
1301     avformat
1302     avresample
1303     avutil
1304     swscale
1305 "
1306
1307 LICENSE_LIST="
1308     gpl
1309     nonfree
1310     version3
1311 "
1312
1313 PROGRAM_LIST="
1314     avconv
1315     avplay
1316     avprobe
1317 "
1318
1319 SUBSYSTEM_LIST="
1320     dct
1321     doc
1322     error_resilience
1323     faan
1324     fft
1325     lsp
1326     lzo
1327     mdct
1328     network
1329     rdft
1330 "
1331
1332 CONFIG_LIST="
1333     $COMPONENT_LIST
1334     $EXAMPLE_LIST
1335     $EXTERNAL_LIBRARY_LIST
1336     $HWACCEL_LIBRARY_LIST
1337     $FEATURE_LIST
1338     $LICENSE_LIST
1339     $LIBRARY_LIST
1340     $PROGRAM_LIST
1341     $SUBSYSTEM_LIST
1342     memalign_hack
1343     neon_clobber_test
1344     pic
1345     pod2man
1346     texi2html
1347     thumb
1348     valgrind_backtrace
1349     xmm_clobber_test
1350 "
1351
1352 THREADS_LIST="
1353     pthreads
1354     w32threads
1355 "
1356
1357 ATOMICS_LIST="
1358     atomics_gcc
1359     atomics_suncc
1360     atomics_win32
1361 "
1362
1363 ARCH_LIST="
1364     aarch64
1365     alpha
1366     arm
1367     avr32
1368     avr32_ap
1369     avr32_uc
1370     bfin
1371     ia64
1372     m68k
1373     mips
1374     mips64
1375     parisc
1376     ppc
1377     ppc64
1378     s390
1379     sh4
1380     sparc
1381     sparc64
1382     tilegx
1383     tilepro
1384     tomi
1385     x86
1386     x86_32
1387     x86_64
1388 "
1389
1390 ARCH_EXT_LIST_ARM="
1391     armv5te
1392     armv6
1393     armv6t2
1394     armv8
1395     neon
1396     vfp
1397     vfpv3
1398 "
1399
1400 ARCH_EXT_LIST_X86_SIMD="
1401     amd3dnow
1402     amd3dnowext
1403     avx
1404     avx2
1405     fma3
1406     fma4
1407     mmx
1408     mmxext
1409     sse
1410     sse2
1411     sse3
1412     sse4
1413     sse42
1414     ssse3
1415     xop
1416 "
1417
1418 ARCH_EXT_LIST_PPC="
1419     altivec
1420     dcbzl
1421     ldbrx
1422     power8
1423     ppc4xx
1424     vsx
1425 "
1426
1427 ARCH_EXT_LIST_X86="
1428     $ARCH_EXT_LIST_X86_SIMD
1429     cpunop
1430     i686
1431 "
1432
1433 ARCH_EXT_LIST_MIPS="
1434     loongson
1435     mips32r1
1436     mips64r1
1437     mips32r2
1438     mips64r2
1439     mips32r6
1440     mips64r6
1441 "
1442
1443 ARCH_EXT_LIST="
1444     $ARCH_EXT_LIST_ARM
1445     $ARCH_EXT_LIST_MIPS
1446     $ARCH_EXT_LIST_PPC
1447     $ARCH_EXT_LIST_X86
1448     vis
1449 "
1450
1451 ARCH_FEATURES="
1452     aligned_stack
1453     fast_64bit
1454     fast_clz
1455     fast_cmov
1456     local_aligned_8
1457     local_aligned_16
1458     simd_align_16
1459 "
1460
1461 BUILTIN_LIST="
1462     atomic_cas_ptr
1463     machine_rw_barrier
1464     MemoryBarrier
1465     mm_empty
1466     rdtsc
1467     sem_timedwait
1468     sync_val_compare_and_swap
1469 "
1470 HAVE_LIST_CMDLINE="
1471     inline_asm
1472     symver
1473     yasm
1474 "
1475
1476 HAVE_LIST_PUB="
1477     bigendian
1478     fast_unaligned
1479 "
1480
1481 HEADERS_LIST="
1482     AVFoundation_AVFoundation_h
1483     alsa_asoundlib_h
1484     altivec_h
1485     arpa_inet_h
1486     cdio_paranoia_h
1487     cdio_paranoia_paranoia_h
1488     dispatch_dispatch_h
1489     dev_bktr_ioctl_bt848_h
1490     dev_bktr_ioctl_meteor_h
1491     dev_ic_bt8xx_h
1492     dev_video_bktr_ioctl_bt848_h
1493     dev_video_meteor_ioctl_meteor_h
1494     direct_h
1495     dlfcn_h
1496     d3d11_h
1497     dxva_h
1498     gsm_h
1499     io_h
1500     mach_mach_time_h
1501     machine_ioctl_bt848_h
1502     machine_ioctl_meteor_h
1503     malloc_h
1504     poll_h
1505     sndio_h
1506     soundcard_h
1507     sys_mman_h
1508     sys_param_h
1509     sys_resource_h
1510     sys_select_h
1511     sys_soundcard_h
1512     sys_time_h
1513     sys_un_h
1514     sys_videoio_h
1515     unistd_h
1516     valgrind_valgrind_h
1517     windows_h
1518     winsock2_h
1519 "
1520
1521 INTRINSICS_LIST="
1522     intrinsics_neon
1523 "
1524
1525 MATH_FUNCS="
1526     atanf
1527     atan2f
1528     cbrtf
1529     cosf
1530     exp2
1531     exp2f
1532     expf
1533     isinf
1534     isnan
1535     ldexpf
1536     llrint
1537     llrintf
1538     log2
1539     log2f
1540     log10f
1541     lrint
1542     lrintf
1543     powf
1544     rint
1545     round
1546     roundf
1547     sinf
1548     trunc
1549     truncf
1550 "
1551
1552 SYSTEM_FUNCS="
1553     aligned_malloc
1554     clock_gettime
1555     closesocket
1556     CommandLineToArgvW
1557     CoTaskMemFree
1558     CryptGenRandom
1559     dlopen
1560     fcntl
1561     flt_lim
1562     fork
1563     getaddrinfo
1564     gethrtime
1565     getopt
1566     GetProcessAffinityMask
1567     GetProcessMemoryInfo
1568     GetProcessTimes
1569     getrusage
1570     GetSystemTimeAsFileTime
1571     gettimeofday
1572     gmtime_r
1573     inet_aton
1574     isatty
1575     jack_port_get_latency_range
1576     LoadLibrary
1577     localtime_r
1578     mach_absolute_time
1579     MapViewOfFile
1580     memalign
1581     mkstemp
1582     mmap
1583     mprotect
1584     nanosleep
1585     posix_memalign
1586     sched_getaffinity
1587     SetConsoleTextAttribute
1588     setmode
1589     setrlimit
1590     Sleep
1591     strerror_r
1592     sysconf
1593     sysctl
1594     usleep
1595     VirtualAlloc
1596 "
1597
1598 TOOLCHAIN_FEATURES="
1599     as_dn_directive
1600     as_func
1601     as_object_arch
1602     asm_mod_q
1603     attribute_may_alias
1604     attribute_packed
1605     ebp_available
1606     ebx_available
1607     gnu_as
1608     ibm_asm
1609     inline_asm_labels
1610     pragma_deprecated
1611     symver_asm_label
1612     symver_gnu_asm
1613     vfp_args
1614     xform_asm
1615     xmm_clobbers
1616 "
1617
1618 TYPES_LIST="
1619     CONDITION_VARIABLE_Ptr
1620     socklen_t
1621     struct_addrinfo
1622     struct_group_source_req
1623     struct_ip_mreq_source
1624     struct_ipv6_mreq
1625     struct_pollfd
1626     struct_rusage_ru_maxrss
1627     struct_sockaddr_in6
1628     struct_sockaddr_sa_len
1629     struct_sockaddr_storage
1630     struct_v4l2_frmivalenum_discrete
1631 "
1632
1633 HAVE_LIST="
1634     $ARCH_EXT_LIST
1635     $(add_suffix _external $ARCH_EXT_LIST)
1636     $(add_suffix _inline   $ARCH_EXT_LIST)
1637     $ARCH_FEATURES
1638     $ATOMICS_LIST
1639     $BUILTIN_LIST
1640     $HAVE_LIST_CMDLINE
1641     $HAVE_LIST_PUB
1642     $HEADERS_LIST
1643     $INTRINSICS_LIST
1644     $MATH_FUNCS
1645     $SYSTEM_FUNCS
1646     $THREADS_LIST
1647     $TOOLCHAIN_FEATURES
1648     $TYPES_LIST
1649     atomics_native
1650     dos_paths
1651     dxva2_lib
1652     libc_msvcrt
1653     libdc1394_1
1654     libdc1394_2
1655     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1656     sdl
1657     section_data_rel_ro
1658     threads
1659     vaapi_drm
1660     vaapi_x11
1661     vdpau_x11
1662     xlib
1663 "
1664
1665 # options emitted with CONFIG_ prefix but not available on the command line
1666 CONFIG_EXTRA="
1667     aandcttables
1668     ac3dsp
1669     audio_frame_queue
1670     audiodsp
1671     blockdsp
1672     bswapdsp
1673     cabac
1674     dirac_parse
1675     dvprofile
1676     faandct
1677     faanidct
1678     fdctdsp
1679     flacdsp
1680     fmtconvert
1681     g722dsp
1682     gcrypt
1683     gmp
1684     golomb
1685     gplv3
1686     h263dsp
1687     h264chroma
1688     h264dsp
1689     h264pred
1690     h264qpel
1691     hpeldsp
1692     huffman
1693     huffyuvdsp
1694     huffyuvencdsp
1695     idctdsp
1696     iirfilter
1697     imdct15
1698     intrax8
1699     iso_media
1700     ividsp
1701     jpegtables
1702     libx262
1703     lgplv3
1704     lpc
1705     lzf
1706     me_cmp
1707     mpeg_er
1708     mpegaudio
1709     mpegaudiodsp
1710     mpegvideo
1711     mpegvideoenc
1712     mss34dsp
1713     pixblockdsp
1714     qpeldsp
1715     qsv
1716     qsvdec
1717     qsvenc
1718     rangecoder
1719     riffdec
1720     riffenc
1721     rtpdec
1722     rtpenc_chain
1723     rv34dsp
1724     sinewin
1725     snappy
1726     srtp
1727     startcode
1728     texturedsp
1729     texturedspenc
1730     tpeldsp
1731     vaapi_encode
1732     vc1dsp
1733     videodsp
1734     vp3dsp
1735     vp56dsp
1736     vp8dsp
1737     wma_freqs
1738     wmv2dsp
1739 "
1740
1741 CMDLINE_SELECT="
1742     $ARCH_EXT_LIST
1743     $CONFIG_LIST
1744     $HAVE_LIST_CMDLINE
1745     $THREADS_LIST
1746     asm
1747     cross_compile
1748     debug
1749     extra_warnings
1750     logging
1751     lto
1752     optimizations
1753     rpath
1754 "
1755
1756 PATHS_LIST="
1757     bindir
1758     datadir
1759     docdir
1760     incdir
1761     libdir
1762     mandir
1763     prefix
1764     shlibdir
1765 "
1766
1767 CMDLINE_SET="
1768     $PATHS_LIST
1769     ar
1770     arch
1771     as
1772     build_suffix
1773     cc
1774     objcc
1775     cpu
1776     cross_prefix
1777     custom_allocator
1778     dep_cc
1779     env
1780     extra_version
1781     host_cc
1782     host_cflags
1783     host_ld
1784     host_ldflags
1785     host_libs
1786     host_os
1787     ld
1788     logfile
1789     malloc_prefix
1790     nm
1791     optflags
1792     pkg_config
1793     pkg_config_flags
1794     random_seed
1795     samples
1796     sysinclude
1797     sysroot
1798     target_exec
1799     target_os
1800     target_path
1801     target_samples
1802     toolchain
1803 "
1804
1805 CMDLINE_APPEND="
1806     extra_cflags
1807     extra_objcflags
1808     host_cppflags
1809 "
1810
1811 # code dependency declarations
1812
1813 # architecture extensions
1814
1815 armv5te_deps="arm"
1816 armv6_deps="arm"
1817 armv6t2_deps="arm"
1818 armv8_deps="aarch64"
1819 neon_deps_any="aarch64 arm"
1820 intrinsics_neon_deps="neon"
1821 vfp_deps_any="aarch64 arm"
1822 vfpv3_deps="vfp"
1823
1824 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1825
1826 altivec_deps="ppc"
1827 ppc4xx_deps="ppc"
1828 vsx_deps="altivec"
1829 power8_deps="vsx"
1830
1831 cpunop_deps="i686"
1832 x86_64_select="i686"
1833 x86_64_suggest="fast_cmov"
1834
1835 amd3dnow_deps="mmx"
1836 amd3dnowext_deps="amd3dnow"
1837 i686_deps="x86"
1838 mmx_deps="x86"
1839 mmxext_deps="mmx"
1840 sse_deps="mmxext"
1841 sse2_deps="sse"
1842 sse3_deps="sse2"
1843 ssse3_deps="sse3"
1844 sse4_deps="ssse3"
1845 sse42_deps="sse4"
1846 avx_deps="sse42"
1847 xop_deps="avx"
1848 fma3_deps="avx"
1849 fma4_deps="avx"
1850 avx2_deps="avx"
1851
1852 mmx_external_deps="yasm"
1853 mmx_inline_deps="inline_asm"
1854 mmx_suggest="mmx_external mmx_inline"
1855
1856 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1857     eval dep=\$${ext}_deps
1858     eval ${ext}_external_deps='"${dep}_external"'
1859     eval ${ext}_inline_deps='"${dep}_inline"'
1860     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1861 done
1862
1863 aligned_stack_if_any="aarch64 ppc x86"
1864 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1865 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1866 fast_unaligned_if_any="aarch64 ppc x86"
1867 simd_align_16_if_any="altivec neon sse"
1868
1869 # system capabilities
1870 symver_if_any="symver_asm_label symver_gnu_asm"
1871 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1872
1873 # threading support
1874 atomics_gcc_if="sync_val_compare_and_swap"
1875 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1876 atomics_win32_if="MemoryBarrier"
1877 atomics_native_if_any="$ATOMICS_LIST"
1878 w32threads_deps="atomics_native"
1879 threads_if_any="$THREADS_LIST"
1880
1881 # subsystems
1882 dct_select="rdft"
1883 dirac_parse_select="golomb"
1884 error_resilience_select="me_cmp"
1885 faandct_deps="faan fdctdsp"
1886 faanidct_deps="faan idctdsp"
1887 h264dsp_select="startcode"
1888 intrax8_select="blockdsp idctdsp"
1889 mdct_select="fft"
1890 rdft_select="fft"
1891 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1892 mpeg_er_select="error_resilience"
1893 mpegaudio_select="mpegaudiodsp"
1894 mpegaudiodsp_select="dct"
1895 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1896 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1897 vc1dsp_select="h264chroma qpeldsp startcode"
1898
1899 # decoders / encoders
1900 aac_decoder_select="imdct15 mdct sinewin"
1901 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1902 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1903 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1904 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1905 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1906 adpcm_g722_decoder_select="g722dsp"
1907 adpcm_g722_encoder_select="g722dsp"
1908 aic_decoder_select="golomb idctdsp"
1909 alac_encoder_select="lpc"
1910 als_decoder_select="bswapdsp"
1911 amrnb_decoder_select="lsp"
1912 amrwb_decoder_select="lsp"
1913 amv_decoder_select="sp5x_decoder"
1914 ape_decoder_select="bswapdsp"
1915 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1916 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1917 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1918 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1919 atrac1_decoder_select="mdct sinewin"
1920 atrac3_decoder_select="mdct"
1921 atrac3p_decoder_select="mdct sinewin"
1922 bink_decoder_select="blockdsp hpeldsp"
1923 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1924 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1925 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1926 cllc_decoder_select="bswapdsp"
1927 comfortnoise_encoder_select="lpc"
1928 cook_decoder_select="audiodsp mdct sinewin"
1929 cscd_decoder_select="lzo"
1930 cscd_decoder_suggest="zlib"
1931 dca_decoder_select="fmtconvert mdct"
1932 dds_decoder_select="texturedsp"
1933 dnxhd_decoder_select="blockdsp idctdsp"
1934 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1935 dvvideo_decoder_select="dvprofile idctdsp"
1936 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1937 dxa_decoder_deps="zlib"
1938 dxv_decoder_select="lzf texturedsp"
1939 eac3_decoder_select="ac3_decoder"
1940 eac3_encoder_select="ac3_encoder"
1941 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1942 eatgq_decoder_select="aandcttables idctdsp"
1943 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1944 exr_decoder_deps="zlib"
1945 ffv1_decoder_select="golomb rangecoder"
1946 ffv1_encoder_select="rangecoder"
1947 ffvhuff_decoder_select="huffyuv_decoder"
1948 ffvhuff_encoder_select="huffyuv_encoder"
1949 fic_decoder_select="golomb"
1950 flac_decoder_select="flacdsp golomb"
1951 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1952 flashsv_decoder_deps="zlib"
1953 flashsv_encoder_deps="zlib"
1954 flashsv2_decoder_deps="zlib"
1955 flv_decoder_select="h263_decoder"
1956 flv_encoder_select="h263_encoder"
1957 fourxm_decoder_select="blockdsp bswapdsp"
1958 fraps_decoder_select="bswapdsp huffman"
1959 g2m_decoder_deps="zlib"
1960 g2m_decoder_select="blockdsp idctdsp jpegtables"
1961 h261_decoder_select="mpeg_er mpegvideo"
1962 h261_encoder_select="aandcttables mpegvideoenc"
1963 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1964 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1965 h263i_decoder_select="h263_decoder"
1966 h263p_encoder_select="h263_encoder"
1967 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1968 h264_decoder_suggest="error_resilience"
1969 hap_decoder_select="snappy texturedsp"
1970 hap_encoder_deps="libsnappy"
1971 hap_encoder_select="texturedspenc"
1972 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1973 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1974 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1975 iac_decoder_select="imc_decoder"
1976 imc_decoder_select="bswapdsp fft mdct sinewin"
1977 indeo3_decoder_select="hpeldsp"
1978 indeo4_decoder_select="ividsp"
1979 indeo5_decoder_select="ividsp"
1980 interplay_video_decoder_select="hpeldsp"
1981 jpegls_decoder_select="golomb mjpeg_decoder"
1982 jpegls_encoder_select="golomb"
1983 jv_decoder_select="blockdsp"
1984 lagarith_decoder_select="huffyuvdsp"
1985 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1986 loco_decoder_select="golomb"
1987 magicyuv_decoder_select="huffyuvdsp"
1988 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1989 metasound_decoder_select="lsp mdct sinewin"
1990 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1991 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1992 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1993 mjpegb_decoder_select="mjpeg_decoder"
1994 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1995 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1996 mlp_decoder_select="mlp_parser"
1997 motionpixels_decoder_select="bswapdsp"
1998 mp1_decoder_select="mpegaudio"
1999 mp1float_decoder_select="mpegaudio"
2000 mp2_decoder_select="mpegaudio"
2001 mp2float_decoder_select="mpegaudio"
2002 mp3_decoder_select="mpegaudio"
2003 mp3adu_decoder_select="mpegaudio"
2004 mp3adufloat_decoder_select="mpegaudio"
2005 mp3float_decoder_select="mpegaudio"
2006 mp3on4_decoder_select="mpegaudio"
2007 mp3on4float_decoder_select="mpegaudio"
2008 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2009 mpc8_decoder_select="mpegaudiodsp"
2010 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2011 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2012 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2013 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2014 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2015 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2016 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2017 mpeg4_encoder_select="h263_encoder"
2018 msa1_decoder_select="mss34dsp"
2019 msmpeg4v1_decoder_select="h263_decoder"
2020 msmpeg4v2_decoder_select="h263_decoder"
2021 msmpeg4v2_encoder_select="h263_encoder"
2022 msmpeg4v3_decoder_select="h263_decoder"
2023 msmpeg4v3_encoder_select="h263_encoder"
2024 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2025 mts2_decoder_select="mss34dsp"
2026 mxpeg_decoder_select="mjpeg_decoder"
2027 nellymoser_decoder_select="mdct sinewin"
2028 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2029 nuv_decoder_select="idctdsp lzo"
2030 on2avc_decoder_select="mdct"
2031 opus_decoder_deps="avresample"
2032 opus_decoder_select="imdct15"
2033 png_decoder_deps="zlib"
2034 png_encoder_deps="zlib"
2035 png_encoder_select="huffyuvencdsp"
2036 prores_decoder_select="idctdsp"
2037 prores_encoder_select="fdctdsp"
2038 qcelp_decoder_select="lsp"
2039 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2040 ra_144_encoder_select="audio_frame_queue lpc"
2041 ralf_decoder_select="golomb"
2042 rscc_decoder_deps="zlib"
2043 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2044 rv10_encoder_select="h263_encoder"
2045 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2046 rv20_encoder_select="h263_encoder"
2047 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2048 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2049 screenpresso_decoder_deps="zlib"
2050 shorten_decoder_select="golomb"
2051 sipr_decoder_select="lsp"
2052 sp5x_decoder_select="mjpeg_decoder"
2053 svq1_decoder_select="hpeldsp"
2054 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2055 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2056 svq3_decoder_suggest="zlib"
2057 tak_decoder_select="audiodsp"
2058 tdsc_decoder_deps="zlib"
2059 tdsc_decoder_select="mjpeg_decoder"
2060 theora_decoder_select="vp3_decoder"
2061 thp_decoder_select="mjpeg_decoder"
2062 tiff_decoder_suggest="zlib"
2063 tiff_encoder_suggest="zlib"
2064 truehd_decoder_select="mlp_decoder"
2065 truemotion2_decoder_select="bswapdsp"
2066 truespeech_decoder_select="bswapdsp"
2067 tscc_decoder_deps="zlib"
2068 txd_decoder_select="texturedsp"
2069 twinvq_decoder_select="mdct lsp sinewin"
2070 utvideo_decoder_select="bswapdsp"
2071 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2072 vble_decoder_select="huffyuvdsp"
2073 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2074 vc1image_decoder_select="vc1_decoder"
2075 vorbis_decoder_select="mdct"
2076 vorbis_encoder_select="mdct"
2077 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2078 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2079 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2080 vp6a_decoder_select="vp6_decoder"
2081 vp6f_decoder_select="vp6_decoder"
2082 vp7_decoder_select="h264pred videodsp vp8dsp"
2083 vp8_decoder_select="h264pred videodsp vp8dsp"
2084 vp9_decoder_select="videodsp"
2085 webp_decoder_select="vp8_decoder"
2086 wmapro_decoder_select="mdct sinewin wma_freqs"
2087 wmav1_decoder_select="mdct sinewin wma_freqs"
2088 wmav1_encoder_select="mdct sinewin wma_freqs"
2089 wmav2_decoder_select="mdct sinewin wma_freqs"
2090 wmav2_encoder_select="mdct sinewin wma_freqs"
2091 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2092 wmv1_decoder_select="h263_decoder"
2093 wmv1_encoder_select="h263_encoder"
2094 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2095 wmv2_encoder_select="h263_encoder wmv2dsp"
2096 wmv3_decoder_select="vc1_decoder"
2097 wmv3image_decoder_select="wmv3_decoder"
2098 zerocodec_decoder_deps="zlib"
2099 zlib_decoder_deps="zlib"
2100 zlib_encoder_deps="zlib"
2101 zmbv_decoder_deps="zlib"
2102 zmbv_encoder_deps="zlib"
2103
2104 # hardware accelerators
2105 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2106 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2107 vaapi_deps="va_va_h"
2108 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2109 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2110 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2111
2112 h263_vaapi_hwaccel_deps="vaapi"
2113 h263_vaapi_hwaccel_select="h263_decoder"
2114 h264_d3d11va_hwaccel_deps="d3d11va"
2115 h264_d3d11va_hwaccel_select="h264_decoder"
2116 h264_dxva2_hwaccel_deps="dxva2"
2117 h264_dxva2_hwaccel_select="h264_decoder"
2118 h264_mmal_decoder_deps="mmal"
2119 h264_mmal_decoder_select="mmal"
2120 h264_mmal_hwaccel_deps="mmal"
2121 h264_omx_encoder_deps="omx"
2122 h264_qsv_hwaccel_deps="libmfx"
2123 h264_vaapi_hwaccel_deps="vaapi"
2124 h264_vaapi_hwaccel_select="h264_decoder"
2125 h264_vda_hwaccel_deps="vda"
2126 h264_vda_hwaccel_select="h264_decoder"
2127 h264_vda_old_hwaccel_deps="vda"
2128 h264_vda_old_hwaccel_select="h264_decoder"
2129 h264_vdpau_hwaccel_deps="vdpau"
2130 h264_vdpau_hwaccel_select="h264_decoder"
2131 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2132 hevc_d3d11va_hwaccel_select="hevc_decoder"
2133 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2134 hevc_dxva2_hwaccel_select="hevc_decoder"
2135 hevc_qsv_hwaccel_deps="libmfx"
2136 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2137 hevc_vdpau_hwaccel_select="hevc_decoder"
2138 mpeg1_vdpau_hwaccel_deps="vdpau"
2139 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2140 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2141 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2142 mpeg2_dxva2_hwaccel_deps="dxva2"
2143 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2144 mpeg2_mmal_decoder_deps="mmal"
2145 mpeg2_mmal_decoder_select="mmal"
2146 mpeg2_mmal_hwaccel_deps="mmal"
2147 mpeg2_qsv_hwaccel_deps="libmfx"
2148 mpeg2_vaapi_hwaccel_deps="vaapi"
2149 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2150 mpeg2_vdpau_hwaccel_deps="vdpau"
2151 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2152 mpeg4_omx_encoder_deps="omx"
2153 mpeg4_vaapi_hwaccel_deps="vaapi"
2154 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2155 mpeg4_vdpau_hwaccel_deps="vdpau"
2156 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2157 vc1_d3d11va_hwaccel_deps="d3d11va"
2158 vc1_d3d11va_hwaccel_select="vc1_decoder"
2159 vc1_dxva2_hwaccel_deps="dxva2"
2160 vc1_dxva2_hwaccel_select="vc1_decoder"
2161 vc1_mmal_decoder_deps="mmal"
2162 vc1_mmal_decoder_select="mmal"
2163 vc1_mmal_hwaccel_deps="mmal"
2164 vc1_vaapi_hwaccel_deps="vaapi"
2165 vc1_vaapi_hwaccel_select="vc1_decoder"
2166 vc1_vdpau_hwaccel_deps="vdpau"
2167 vc1_vdpau_hwaccel_select="vc1_decoder"
2168 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2169 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2170 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2171 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2172
2173 # hardware-accelerated codecs
2174 nvenc_deps_any="dlopen LoadLibrary"
2175 nvenc_extralibs='$ldl'
2176 omx_deps="dlopen pthreads"
2177 omx_extralibs='$ldl'
2178 qsvdec_select="qsv"
2179 qsvenc_select="qsv"
2180 vaapi_encode_deps="vaapi"
2181
2182 hwupload_cuda_filter_deps="cuda"
2183 scale_npp_filter_deps="cuda libnpp"
2184
2185 h264_nvenc_encoder_deps="nvenc"
2186 h264_qsv_decoder_deps="libmfx"
2187 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2188 h264_qsv_encoder_deps="libmfx"
2189 h264_qsv_encoder_select="qsvenc"
2190 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2191 h264_vaapi_encoder_select="vaapi_encode golomb"
2192
2193 hevc_nvenc_encoder_deps="nvenc"
2194 hevc_qsv_decoder_deps="libmfx"
2195 hevc_qsv_encoder_deps="libmfx"
2196 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2197 hevc_qsv_encoder_select="qsvenc"
2198 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2199 hevc_vaapi_encoder_select="vaapi_encode golomb"
2200 mpeg2_qsv_decoder_deps="libmfx"
2201 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2202 mpeg2_qsv_encoder_deps="libmfx"
2203 mpeg2_qsv_encoder_select="qsvenc"
2204
2205 nvenc_h264_encoder_deps="nvenc"
2206 nvenc_hevc_encoder_deps="nvenc"
2207
2208 # parsers
2209 h264_parser_select="golomb h264dsp"
2210 hevc_parser_select="golomb"
2211 mpegvideo_parser_select="mpegvideo"
2212 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2213 vc1_parser_select="vc1dsp"
2214
2215 # bitstream_filters
2216 mjpeg2jpeg_bsf_select="jpegtables"
2217
2218 # external libraries
2219 libdcadec_decoder_deps="libdcadec"
2220 libfaac_encoder_deps="libfaac"
2221 libfaac_encoder_select="audio_frame_queue"
2222 libfdk_aac_decoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_deps="libfdk_aac"
2224 libfdk_aac_encoder_select="audio_frame_queue"
2225 libgsm_decoder_deps="libgsm"
2226 libgsm_encoder_deps="libgsm"
2227 libgsm_ms_decoder_deps="libgsm"
2228 libgsm_ms_encoder_deps="libgsm"
2229 libilbc_decoder_deps="libilbc"
2230 libilbc_encoder_deps="libilbc"
2231 libkvazaar_encoder_deps="libkvazaar"
2232 libmp3lame_encoder_deps="libmp3lame"
2233 libmp3lame_encoder_select="audio_frame_queue"
2234 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2235 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2236 libopencore_amrnb_encoder_select="audio_frame_queue"
2237 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2238 libopenh264_decoder_deps="libopenh264"
2239 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2240 libopenh264_encoder_deps="libopenh264"
2241 libopenjpeg_decoder_deps="libopenjpeg"
2242 libopenjpeg_encoder_deps="libopenjpeg"
2243 libopus_decoder_deps="libopus"
2244 libopus_encoder_deps="libopus"
2245 libopus_encoder_select="audio_frame_queue"
2246 libschroedinger_decoder_deps="libschroedinger"
2247 libschroedinger_encoder_deps="libschroedinger"
2248 libspeex_decoder_deps="libspeex"
2249 libspeex_encoder_deps="libspeex"
2250 libspeex_encoder_select="audio_frame_queue"
2251 libtheora_encoder_deps="libtheora"
2252 libtwolame_encoder_deps="libtwolame"
2253 libvo_aacenc_encoder_deps="libvo_aacenc"
2254 libvo_aacenc_encoder_select="audio_frame_queue"
2255 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2256 libvorbis_encoder_deps="libvorbis"
2257 libvorbis_encoder_select="audio_frame_queue"
2258 libvpx_vp8_decoder_deps="libvpx"
2259 libvpx_vp8_encoder_deps="libvpx"
2260 libvpx_vp9_decoder_deps="libvpx"
2261 libvpx_vp9_encoder_deps="libvpx"
2262 libwavpack_encoder_deps="libwavpack"
2263 libwebp_encoder_deps="libwebp"
2264 libx262_encoder_deps="libx262"
2265 libx264_encoder_deps="libx264"
2266 libx265_encoder_deps="libx265"
2267 libxavs_encoder_deps="libxavs"
2268 libxvid_encoder_deps="libxvid"
2269
2270 # demuxers / muxers
2271 ac3_demuxer_select="ac3_parser"
2272 asf_demuxer_select="riffdec"
2273 asf_muxer_select="riffenc"
2274 asf_stream_muxer_select="asf_muxer"
2275 avi_demuxer_select="iso_media riffdec"
2276 avi_muxer_select="riffenc"
2277 avisynth_demuxer_deps="avisynth"
2278 avisynth_demuxer_select="riffdec"
2279 caf_demuxer_select="iso_media riffdec"
2280 dash_muxer_select="mp4_muxer"
2281 dirac_demuxer_select="dirac_parser"
2282 dv_demuxer_select="dvprofile"
2283 dv_muxer_select="dvprofile"
2284 dxa_demuxer_select="riffdec"
2285 eac3_demuxer_select="ac3_parser"
2286 f4v_muxer_select="mov_muxer"
2287 flac_demuxer_select="flac_parser"
2288 hds_muxer_select="flv_muxer"
2289 hls_muxer_select="mpegts_muxer"
2290 ipod_muxer_select="mov_muxer"
2291 ismv_muxer_select="mov_muxer"
2292 matroska_audio_muxer_select="matroska_muxer"
2293 matroska_demuxer_select="iso_media riffdec"
2294 matroska_demuxer_suggest="bzlib lzo zlib"
2295 matroska_muxer_select="iso_media riffenc"
2296 mmf_muxer_select="riffenc"
2297 mov_demuxer_select="iso_media riffdec"
2298 mov_demuxer_suggest="zlib"
2299 mov_muxer_select="iso_media riffenc rtpenc_chain"
2300 mp3_demuxer_select="mpegaudio_parser"
2301 mp4_muxer_select="mov_muxer"
2302 mpegts_demuxer_select="iso_media"
2303 mpegts_muxer_select="adts_muxer latm_muxer"
2304 mpegtsraw_demuxer_select="mpegts_demuxer"
2305 mxf_d10_muxer_select="mxf_muxer"
2306 nut_muxer_select="riffenc"
2307 nuv_demuxer_select="riffdec"
2308 oga_muxer_select="ogg_muxer"
2309 ogg_demuxer_select="dirac_parse"
2310 opus_muxer_select="ogg_muxer"
2311 psp_muxer_select="mov_muxer"
2312 rtp_demuxer_select="sdp_demuxer"
2313 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2314 rtsp_demuxer_select="http_protocol rtpdec"
2315 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2316 sap_demuxer_select="sdp_demuxer"
2317 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2318 sdp_demuxer_select="rtpdec"
2319 smoothstreaming_muxer_select="ismv_muxer"
2320 spdif_muxer_select="aac_parser"
2321 spx_muxer_select="ogg_muxer"
2322 swf_demuxer_suggest="zlib"
2323 tak_demuxer_select="tak_parser"
2324 tg2_muxer_select="mov_muxer"
2325 tgp_muxer_select="mov_muxer"
2326 w64_demuxer_select="wav_demuxer"
2327 wav_demuxer_select="riffdec"
2328 wav_muxer_select="riffenc"
2329 webm_muxer_select="iso_media riffenc"
2330 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2331 wtv_demuxer_select="mpegts_demuxer riffdec"
2332 xmv_demuxer_select="riffdec"
2333 xwma_demuxer_select="riffdec"
2334
2335 # indevs / outdevs
2336 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2337 alsa_outdev_deps="alsa_asoundlib_h"
2338 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2339 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2340 dv1394_indev_deps="dv1394"
2341 dv1394_indev_select="dv_demuxer"
2342 fbdev_indev_deps="linux_fb_h"
2343 jack_indev_deps="jack_jack_h"
2344 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2345 libcdio_indev_deps="libcdio"
2346 libdc1394_indev_deps="libdc1394"
2347 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2348 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2349 pulse_indev_deps="libpulse"
2350 sndio_indev_deps="sndio_h"
2351 sndio_outdev_deps="sndio_h"
2352 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2353 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2354 vfwcap_indev_extralibs="-lavicap32"
2355 x11grab_indev_deps="x11grab"
2356 x11grab_xcb_indev_deps="libxcb"
2357
2358 # protocols
2359 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2360 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2361 ffrtmpcrypt_protocol_select="tcp_protocol"
2362 ffrtmphttp_protocol_deps="!librtmp_protocol"
2363 ffrtmphttp_protocol_select="http_protocol"
2364 gopher_protocol_select="network"
2365 http_protocol_select="tcp_protocol"
2366 httpproxy_protocol_select="tcp_protocol"
2367 https_protocol_select="tls_protocol"
2368 icecast_protocol_select="http_protocol"
2369 librtmp_protocol_deps="librtmp"
2370 librtmpe_protocol_deps="librtmp"
2371 librtmps_protocol_deps="librtmp"
2372 librtmpt_protocol_deps="librtmp"
2373 librtmpte_protocol_deps="librtmp"
2374 mmsh_protocol_select="http_protocol"
2375 mmst_protocol_select="network"
2376 rtmp_protocol_deps="!librtmp_protocol"
2377 rtmp_protocol_select="tcp_protocol"
2378 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2379 rtmps_protocol_deps="!librtmp_protocol"
2380 rtmps_protocol_select="tls_protocol"
2381 rtmpt_protocol_select="ffrtmphttp_protocol"
2382 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2383 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2384 rtp_protocol_select="udp_protocol"
2385 sctp_protocol_deps="struct_sctp_event_subscribe"
2386 sctp_protocol_select="network"
2387 srtp_protocol_select="rtp_protocol srtp"
2388 tcp_protocol_select="network"
2389 tls_gnutls_protocol_deps="gnutls"
2390 tls_gnutls_protocol_select="tcp_protocol"
2391 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2392 tls_openssl_protocol_select="tcp_protocol"
2393 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2394 udp_protocol_select="network"
2395 unix_protocol_deps="sys_un_h"
2396 unix_protocol_select="network"
2397
2398 # filters
2399 blackframe_filter_deps="gpl"
2400 boxblur_filter_deps="gpl"
2401 bs2b_filter_deps="libbs2b"
2402 cropdetect_filter_deps="gpl"
2403 delogo_filter_deps="gpl"
2404 drawtext_filter_deps="libfreetype"
2405 frei0r_filter_deps="frei0r dlopen"
2406 frei0r_filter_extralibs='$ldl'
2407 frei0r_src_filter_deps="frei0r dlopen"
2408 frei0r_src_filter_extralibs='$ldl'
2409 hqdn3d_filter_deps="gpl"
2410 interlace_filter_deps="gpl"
2411 ocv_filter_deps="libopencv"
2412 resample_filter_deps="avresample"
2413 scale_filter_deps="swscale"
2414 scale_qsv_filter_deps="libmfx"
2415 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2416
2417 # examples
2418 avcodec_example_deps="avcodec avutil"
2419 filter_audio_example_deps="avfilter avutil"
2420 metadata_example_deps="avformat avutil"
2421 output_example_deps="avcodec avformat avutil swscale"
2422 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2423 transcode_aac_example_deps="avcodec avformat avresample"
2424
2425 # libraries, in linking order
2426 avcodec_deps="avutil"
2427 avdevice_deps="avformat avcodec avutil"
2428 avfilter_deps="avutil"
2429 avformat_deps="avcodec avutil"
2430 avresample_deps="avutil"
2431 swscale_deps="avutil"
2432
2433 # programs
2434 avconv_deps="avcodec avfilter avformat avresample swscale"
2435 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2436                fps_filter null_filter resample_filter scale_filter
2437                setpts_filter trim_filter"
2438 avplay_deps="avcodec avfilter avformat avresample sdl"
2439 avplay_libs='$sdl_libs'
2440 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2441 avprobe_deps="avcodec avformat"
2442
2443 # documentation
2444 pod2man_deps="doc"
2445 texi2html_deps="doc"
2446
2447 # default parameters
2448
2449 logfile="config.log"
2450
2451 # installation paths
2452 prefix_default="/usr/local"
2453 bindir_default='${prefix}/bin'
2454 datadir_default='${prefix}/share/avconv'
2455 docdir_default='${prefix}/share/doc/libav'
2456 incdir_default='${prefix}/include'
2457 libdir_default='${prefix}/lib'
2458 mandir_default='${prefix}/share/man'
2459 shlibdir_default="$libdir_default"
2460
2461 # toolchain
2462 ar_default="ar"
2463 cc_default="gcc"
2464 host_cc_default="gcc"
2465 cp_f="cp -f"
2466 ln_s="ln -s -f"
2467 nm_default="nm -g"
2468 objformat="elf"
2469 pkg_config_default=pkg-config
2470 ranlib="ranlib"
2471 strip="strip"
2472 version_script='--version-script'
2473 yasmexe="yasm"
2474
2475 # machine
2476 arch_default=$(uname -m)
2477 cpu="generic"
2478 intrinsics="none"
2479
2480 # OS
2481 target_os_default=$(tolower $(uname -s))
2482 host_os=$target_os_default
2483
2484 # configurable options
2485 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2486
2487 enable asm
2488 enable debug
2489 enable doc
2490 enable faan faandct faanidct
2491 enable optimizations
2492 enable safe_bitstream_reader
2493 enable static
2494 enable swscale_alpha
2495 enable valgrind_backtrace
2496
2497 # By default, enable only those hwaccels that have no external dependencies.
2498 enable d3d11va dxva2 vda vdpau
2499
2500 # build settings
2501 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2502 LIBPREF="lib"
2503 LIBSUF=".a"
2504 FULLNAME='$(NAME)$(BUILDSUF)'
2505 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2506 SLIBPREF="lib"
2507 SLIBSUF=".so"
2508 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2509 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2510 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2511 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2512 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2513 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2514 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2515
2516 asflags_filter=echo
2517 cflags_filter=echo
2518 ldflags_filter=echo
2519
2520 AS_C='-c'
2521 AS_O='-o $@'
2522 CC_C='-c'
2523 CC_E='-E -o $@'
2524 CC_O='-o $@'
2525 OBJCC_C='-c'
2526 OBJCC_E='-E -o $@'
2527 OBJCC_O='-o $@'
2528 LD_O='-o $@'
2529 LD_LIB='-l%'
2530 LD_PATH='-L'
2531 HOSTCC_C='-c'
2532 HOSTCC_E='-E -o $@'
2533 HOSTCC_O='-o $@'
2534 HOSTLD_O='-o $@'
2535
2536 host_libs='-lm'
2537 host_cflags_filter=echo
2538 host_ldflags_filter=echo
2539
2540 target_path='$(CURDIR)'
2541
2542 # since the object filename is not given with the -MM flag, the compiler
2543 # is only able to print the basename, and we must add the path ourselves
2544 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2545 DEPFLAGS='-MM'
2546
2547 # find source path
2548 if test -f configure; then
2549     source_path=.
2550 else
2551     source_path=$(cd $(dirname "$0"); pwd)
2552     echo "$source_path" | grep -q '[[:blank:]]' &&
2553         die "Out of tree builds are impossible with whitespace in source path."
2554     test -e "$source_path/config.h" &&
2555         die "Out of tree builds are impossible with config.h in source dir."
2556 fi
2557
2558 for v in "$@"; do
2559     r=${v#*=}
2560     l=${v%"$r"}
2561     r=$(sh_quote "$r")
2562     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2563 done
2564
2565 find_things(){
2566     thing=$1
2567     pattern=$2
2568     file=$source_path/$3
2569     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2570 }
2571
2572 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2573 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2574 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2575 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2576 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2577 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2578 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2579 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2580 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2581
2582 find_things_extern(){
2583     thing=$1
2584     pattern=$2
2585     file=$source_path/$3
2586     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2587 }
2588
2589 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2590 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2591
2592 ALL_COMPONENTS="
2593     $BSF_LIST
2594     $DECODER_LIST
2595     $DEMUXER_LIST
2596     $ENCODER_LIST
2597     $FILTER_LIST
2598     $HWACCEL_LIST
2599     $INDEV_LIST
2600     $MUXER_LIST
2601     $OUTDEV_LIST
2602     $PARSER_LIST
2603     $PROTOCOL_LIST
2604 "
2605
2606 for n in $COMPONENT_LIST; do
2607     v=$(toupper ${n%s})_LIST
2608     eval enable \$$v
2609     eval ${n}_if_any="\$$v"
2610 done
2611
2612 enable $ARCH_EXT_LIST
2613
2614 die_unknown(){
2615     echo "Unknown option \"$1\"."
2616     echo "See $0 --help for available options."
2617     exit 1
2618 }
2619
2620 print_3_columns() {
2621     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2622 }
2623
2624 show_list() {
2625     suffix=_$1
2626     shift
2627     echo $* | sed s/$suffix//g | print_3_columns
2628     exit 0
2629 }
2630
2631 rand_list(){
2632     IFS=', '
2633     set -- $*
2634     unset IFS
2635     for thing; do
2636         comp=${thing%:*}
2637         prob=${thing#$comp}
2638         prob=${prob#:}
2639         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2640         echo "prob ${prob:-0.5}"
2641         printf '%s\n' $comp
2642     done
2643 }
2644
2645 do_random(){
2646     action=$1
2647     shift
2648     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2649     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2650 }
2651
2652 for opt do
2653     optval="${opt#*=}"
2654     case "$opt" in
2655         --extra-ldflags=*)
2656             add_ldflags $optval
2657         ;;
2658         --extra-ldexeflags=*)
2659             add_ldexeflags $optval
2660         ;;
2661         --extra-libs=*)
2662             add_extralibs $optval
2663         ;;
2664         --disable-devices)
2665             disable $INDEV_LIST $OUTDEV_LIST
2666         ;;
2667         --enable-debug=*)
2668             debuglevel="$optval"
2669         ;;
2670         --disable-programs)
2671             disable $PROGRAM_LIST
2672         ;;
2673         --disable-everything)
2674             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2675         ;;
2676         --disable-all)
2677             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2678             disable $LIBRARY_LIST $PROGRAM_LIST doc
2679         ;;
2680         --enable-random|--disable-random)
2681             action=${opt%%-random}
2682             do_random ${action#--} $COMPONENT_LIST
2683         ;;
2684         --enable-random=*|--disable-random=*)
2685             action=${opt%%-random=*}
2686             do_random ${action#--} $optval
2687         ;;
2688         --enable-*=*|--disable-*=*)
2689             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2690             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2691             eval list=\$$(toupper $thing)_LIST
2692             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2693             $action $(filter "$name" $list)
2694         ;;
2695         --enable-avserver|--disable-avserver*)
2696             warn "avserver has been removed, the ${opt} option is only"\
2697                  "provided for compatibility and will be removed in the future"
2698         ;;
2699         --enable-?*|--disable-?*)
2700             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2701             if is_in $option $COMPONENT_LIST; then
2702                 test $action = disable && action=unset
2703                 eval $action \$$(toupper ${option%s})_LIST
2704             elif is_in $option $CMDLINE_SELECT; then
2705                 $action $option
2706             else
2707                 die_unknown $opt
2708             fi
2709         ;;
2710         --list-*)
2711             NAME="${opt#--list-}"
2712             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2713             NAME=${NAME%s}
2714             eval show_list $NAME \$$(toupper $NAME)_LIST
2715         ;;
2716         --help|-h) show_help
2717         ;;
2718         *)
2719             optname="${opt%%=*}"
2720             optname="${optname#--}"
2721             optname=$(echo "$optname" | sed 's/-/_/g')
2722             if is_in $optname $CMDLINE_SET; then
2723                 eval $optname='$optval'
2724             elif is_in $optname $CMDLINE_APPEND; then
2725                 append $optname "$optval"
2726             else
2727                 die_unknown $opt
2728             fi
2729         ;;
2730     esac
2731 done
2732
2733 for e in $env; do
2734     eval "export $e"
2735 done
2736
2737 disabled logging && logfile=/dev/null
2738
2739 # Disable all the library-specific components if the library itself
2740 # is disabled, see AVCODEC_LIST and following _LIST variables.
2741
2742 disable_components(){
2743     disabled ${1} && disable $(
2744         eval components="\$$(toupper ${1})_COMPONENTS"
2745         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2746     )
2747 }
2748
2749 map 'disable_components $v' $LIBRARY_LIST
2750
2751 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2752 set >> $logfile
2753
2754 case "$toolchain" in
2755     *-asan)
2756         cc_default="${toolchain%-asan}"
2757         add_cflags  -fsanitize=address
2758         add_ldflags -fsanitize=address
2759     ;;
2760     *-msan)
2761         cc_default="${toolchain%-msan}"
2762         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2763         add_ldflags -fsanitize=memory
2764     ;;
2765     *-tsan)
2766         cc_default="${toolchain%-tsan}"
2767         add_cflags  -fsanitize=thread -pie
2768         add_ldflags -fsanitize=thread -pie
2769         case "$toolchain" in
2770             gcc-tsan)
2771                 add_cflags  -fPIC
2772                 add_ldflags -fPIC
2773                 ;;
2774         esac
2775     ;;
2776     *-usan)
2777         cc_default="${toolchain%-usan}"
2778         add_cflags  -fsanitize=undefined
2779         add_ldflags -fsanitize=undefined
2780         case "$toolchain" in
2781             clang-usan)
2782                 add_cflags -O1
2783                 ;;
2784         esac
2785     ;;
2786     valgrind-*)
2787         target_exec_default="valgrind"
2788         case "$toolchain" in
2789             valgrind-massif)
2790                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2791                 ;;
2792             valgrind-memcheck)
2793                 target_exec_args="--track-origins=yes --leak-check=full"
2794                 ;;
2795         esac
2796     ;;
2797     msvc)
2798         # Check whether the current MSVC version needs the C99 converter.
2799         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2800         # support enough of C99 to build libav. Default to the new
2801         # behaviour if the regexp was unable to match anything, since this
2802         # successfully parses the version number of existing supported
2803         # versions that require the converter (MSVC 2010 and 2012).
2804         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2805         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2806             cc_default="cl"
2807         else
2808             cc_default="c99wrap cl"
2809         fi
2810         ld_default="$source_path/compat/windows/mslink"
2811         nm_default="dumpbin -symbols"
2812         ar_default="lib"
2813         case "$arch" in
2814         arm*)
2815             as_default="armasm"
2816             ;;
2817         esac
2818         target_os_default="win32"
2819         # Use a relative path for TMPDIR. This makes sure all the
2820         # ffconf temp files are written with a relative path, avoiding
2821         # issues with msys/win32 path conversion for MSVC parameters
2822         # such as -Fo<file> or -out:<file>.
2823         TMPDIR=.
2824     ;;
2825     icl)
2826         cc_default="icl"
2827         ld_default="xilink"
2828         nm_default="dumpbin -symbols"
2829         ar_default="xilib"
2830         target_os_default="win32"
2831         TMPDIR=.
2832     ;;
2833     gcov)
2834         add_cflags  -fprofile-arcs -ftest-coverage
2835         add_ldflags -fprofile-arcs -ftest-coverage
2836     ;;
2837     llvm-cov)
2838         add_cflags -fprofile-arcs -ftest-coverage
2839         add_ldflags --coverage
2840     ;;
2841     hardened)
2842         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2843         add_cflags   -fno-strict-overflow -fstack-protector-all
2844         add_ldflags  -Wl,-z,relro -Wl,-z,now
2845     ;;
2846     ?*)
2847         die "Unknown toolchain $toolchain"
2848     ;;
2849 esac
2850
2851 test -n "$cross_prefix" && enable cross_compile
2852
2853 if enabled cross_compile; then
2854     test -n "$arch" && test -n "$target_os" ||
2855         die "Must specify target arch and OS when cross-compiling"
2856 fi
2857
2858 ar_default="${cross_prefix}${ar_default}"
2859 cc_default="${cross_prefix}${cc_default}"
2860 occ_default="${cross_prefix}${occ_default}"
2861 nm_default="${cross_prefix}${nm_default}"
2862 pkg_config_default="${cross_prefix}${pkg_config_default}"
2863 ranlib="${cross_prefix}${ranlib}"
2864 strip="${cross_prefix}${strip}"
2865
2866 sysinclude_default="${sysroot}/usr/include"
2867
2868 set_default arch cc pkg_config sysinclude target_exec target_os
2869 enabled cross_compile || host_cc_default=$cc
2870 set_default host_cc
2871
2872 if ! $pkg_config --version >/dev/null 2>&1; then
2873     warn "$pkg_config not found, library detection may fail."
2874     pkg_config=false
2875 fi
2876
2877 exesuf() {
2878     case $1 in
2879         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2880     esac
2881 }
2882
2883 EXESUF=$(exesuf $target_os)
2884 HOSTEXESUF=$(exesuf $host_os)
2885
2886 # set temporary file name
2887 : ${TMPDIR:=$TEMPDIR}
2888 : ${TMPDIR:=$TMP}
2889 : ${TMPDIR:=/tmp}
2890
2891 if ! check_cmd mktemp -u XXXXXX; then
2892     # simple replacement for missing mktemp
2893     # NOT SAFE FOR GENERAL USE
2894     mktemp(){
2895         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2896     }
2897 fi
2898
2899 tmpfile(){
2900     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2901         (set -C; exec > $tmp) 2>/dev/null ||
2902         die "Unable to create temporary file in $TMPDIR."
2903     append TMPFILES $tmp
2904     eval $1=$tmp
2905 }
2906
2907 trap 'rm -f -- $TMPFILES' EXIT
2908
2909 tmpfile TMPASM .asm
2910 tmpfile TMPC   .c
2911 tmpfile TMPE   $EXESUF
2912 tmpfile TMPH   .h
2913 tmpfile TMPO   .o
2914 tmpfile TMPS   .S
2915 tmpfile TMPSH  .sh
2916 tmpfile TMPV   .ver
2917
2918 unset -f mktemp
2919
2920 chmod +x $TMPE
2921
2922 # make sure we can execute files in $TMPDIR
2923 cat > $TMPSH 2>> $logfile <<EOF
2924 #! /bin/sh
2925 EOF
2926 chmod +x $TMPSH >> $logfile 2>&1
2927 if ! $TMPSH >> $logfile 2>&1; then
2928     cat <<EOF
2929 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2930 variable to another directory and make sure that it is not mounted noexec.
2931 EOF
2932     die "Sanity test failed."
2933 fi
2934
2935 armasm_flags(){
2936     for flag; do
2937         case $flag in
2938             # Filter out MSVC cl.exe options from cflags that shouldn't
2939             # be passed to gas-preprocessor
2940             -M[TD]*)                                            ;;
2941             *)                  echo $flag                      ;;
2942         esac
2943    done
2944 }
2945
2946 ccc_flags(){
2947     for flag; do
2948         case $flag in
2949             -std=c99)           echo -c99                       ;;
2950             -mcpu=*)            echo -arch ${flag#*=}           ;;
2951             -mieee)             echo -ieee                      ;;
2952             -O*|-fast)          echo $flag                      ;;
2953             -fno-math-errno)    echo -assume nomath_errno       ;;
2954             -g)                 echo -g3                        ;;
2955             -Wall)              echo -msg_enable level2         ;;
2956             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2957             -Wl,*)              echo $flag                      ;;
2958             -f*|-W*)                                            ;;
2959             *)                  echo $flag                      ;;
2960         esac
2961    done
2962 }
2963
2964 cparser_flags(){
2965     for flag; do
2966         case $flag in
2967             -Wno-switch)             echo -Wno-switch-enum ;;
2968             -Wno-format-zero-length) ;;
2969             -Wdisabled-optimization) ;;
2970             -Wno-pointer-sign)       echo -Wno-other ;;
2971             *)                       echo $flag ;;
2972         esac
2973     done
2974 }
2975
2976 msvc_common_flags(){
2977     for flag; do
2978         case $flag in
2979             # In addition to specifying certain flags under the compiler
2980             # specific filters, they must be specified here as well or else the
2981             # generic catch all at the bottom will print the original flag.
2982             -Wall)                ;;
2983             -std=c99)             ;;
2984             # Common flags
2985             -fomit-frame-pointer) ;;
2986             -g)                   echo -Z7 ;;
2987             -fno-math-errno)      ;;
2988             -fno-common)          ;;
2989             -fno-signed-zeros)    ;;
2990             -fPIC)                ;;
2991             -mthumb)              ;;
2992             -march=*)             ;;
2993             -lz)                  echo zlib.lib ;;
2994             -lavifil32)           echo vfw32.lib ;;
2995             -lavicap32)           echo vfw32.lib user32.lib ;;
2996             -lx264)               echo libx264.lib ;;
2997             -l*)                  echo ${flag#-l}.lib ;;
2998             -L*)                  echo -libpath:${flag#-L} ;;
2999             *)                    echo $flag ;;
3000         esac
3001     done
3002 }
3003
3004 msvc_flags(){
3005     msvc_common_flags "$@"
3006     for flag; do
3007         case $flag in
3008             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3009                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3010                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3011                                        -wd4273 -wd4554 -wd4701 ;;
3012         esac
3013     done
3014 }
3015
3016 icl_flags(){
3017     msvc_common_flags "$@"
3018     for flag; do
3019         case $flag in
3020             # Despite what Intel's documentation says -Wall, which is supported
3021             # on Windows, does enable remarks so disable them here.
3022             -Wall)                echo $flag -Qdiag-disable:remark ;;
3023             -std=c99)             echo -Qstd=c99 ;;
3024         esac
3025     done
3026 }
3027
3028 pgi_flags(){
3029     for flag; do
3030         case $flag in
3031             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3032             -fomit-frame-pointer) echo -Mnoframe ;;
3033             -g)                   echo -gopt ;;
3034             *)                    echo $flag ;;
3035         esac
3036     done
3037 }
3038
3039 suncc_flags(){
3040     for flag; do
3041         case $flag in
3042             -march=*|-mcpu=*)
3043                 case "${flag#*=}" in
3044                     native)                   echo -xtarget=native       ;;
3045                     v9|niagara)               echo -xarch=sparc          ;;
3046                     ultrasparc)               echo -xarch=sparcvis       ;;
3047                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3048                     i586|pentium)             echo -xchip=pentium        ;;
3049                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3050                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3051                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3052                     pentium4*)          echo -xtarget=pentium4           ;;
3053                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3054                     *-sse3)             echo -xarch=sse3                 ;;
3055                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3056                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3057                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3058                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3059                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3060                     k8|opteron|athlon64|athlon-fx)
3061                                                echo -xarch=sse2a         ;;
3062                     athlon*)                   echo -xarch=pentium_proa  ;;
3063                 esac
3064                 ;;
3065             -std=c99)             echo -xc99              ;;
3066             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3067             -fPIC)                echo -KPIC -xcode=pic32 ;;
3068             -W*,*)                echo $flag              ;;
3069             -f*-*|-W*|-mimpure-text)                      ;;
3070             -shared)              echo -G                 ;;
3071             *)                    echo $flag              ;;
3072         esac
3073     done
3074 }
3075
3076 tms470_flags(){
3077     for flag; do
3078         case $flag in
3079             -march=*|-mcpu=*)
3080                 case "${flag#*=}" in
3081                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3082                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3083                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3084                     armv6*|arm11*)          echo -mv=6   ;;
3085                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3086                                             echo -mv=5e  ;;
3087                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3088                 esac
3089                 ;;
3090             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3091             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3092             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3093             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3094             -msoft-float)   echo --float_support=vfplib       ;;
3095             -O[0-3]|-mf=*)  echo $flag                        ;;
3096             -g)             echo -g -mn                       ;;
3097             -pds=*)         echo $flag                        ;;
3098             -D*|-I*)        echo $flag                        ;;
3099             --gcc|--abi=*)  echo $flag                        ;;
3100             -me)            echo $flag                        ;;
3101         esac
3102     done
3103 }
3104
3105 probe_cc(){
3106     pfx=$1
3107     _cc=$2
3108
3109     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3110     unset _ld_o _ldflags _ld_lib _ld_path
3111     unset _depflags _DEPCMD _DEPFLAGS
3112     _flags_filter=echo
3113
3114     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3115         _type=llvm_gcc
3116         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3117         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3118         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3119         _cflags_speed='-O3'
3120         _cflags_size='-Os'
3121     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3122         _type=gcc
3123         gcc_version=$($_cc --version | head -n1)
3124         gcc_basever=$($_cc -dumpversion)
3125         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3126         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3127         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3128         if ! $_cc -dumpversion | grep -q '^2\.'; then
3129             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3130         fi
3131         _cflags_speed='-O3'
3132         _cflags_size='-Os'
3133     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3134         _type=icc
3135         _ident=$($_cc --version | head -n1)
3136         _depflags='-MMD'
3137         _cflags_speed='-O3'
3138         _cflags_size='-Os'
3139         _cflags_noopt='-O1'
3140     elif $_cc -v 2>&1 | grep -q xlc; then
3141         _type=xlc
3142         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3143         _cflags_speed='-O5'
3144         _cflags_size='-O5 -qcompact'
3145     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3146         _type=ccc
3147         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3148         _DEPFLAGS='-M'
3149         _cflags_speed='-fast'
3150         _cflags_size='-O1'
3151         _flags_filter=ccc_flags
3152     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3153         test -d "$sysroot" || die "No valid sysroot specified."
3154         _type=armcc
3155         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3156         armcc_conf="$PWD/armcc.conf"
3157         $_cc --arm_linux_configure                 \
3158              --arm_linux_config_file="$armcc_conf" \
3159              --configure_sysroot="$sysroot"        \
3160              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3161              die "Error creating armcc configuration file."
3162         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3163         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3164         as_default="${cross_prefix}gcc"
3165         _depflags='-MMD'
3166         _cflags_speed='-O3'
3167         _cflags_size='-Os'
3168     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3169         _type=tms470
3170         _ident=$($_cc -version | head -n1 | tr -s ' ')
3171         _flags='--gcc --abi=eabi -me'
3172         _cc_e='-ppl -fe=$@'
3173         _cc_o='-fe=$@'
3174         _depflags='-ppa -ppd=$(@:.o=.d)'
3175         _cflags_speed='-O3 -mf=5'
3176         _cflags_size='-O3 -mf=2'
3177         _flags_filter=tms470_flags
3178     elif $_cc -v 2>&1 | grep -q clang; then
3179         _type=clang
3180         _ident=$($_cc --version 2>/dev/null | head -n1)
3181         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3182         _cflags_speed='-O3'
3183         _cflags_size='-Os'
3184     elif $_cc -V 2>&1 | grep -q Sun; then
3185         _type=suncc
3186         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3187         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3188         _DEPFLAGS='-xM1 -xc99'
3189         _ldflags='-std=c99'
3190         _cflags_speed='-O5'
3191         _cflags_size='-O5 -xspace'
3192         _flags_filter=suncc_flags
3193     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3194         _type=pathscale
3195         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3196         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3197         _cflags_speed='-O2'
3198         _cflags_size='-Os'
3199         _flags_filter='filter_out -Wdisabled-optimization'
3200     elif $_cc -v 2>&1 | grep -q Open64; then
3201         _type=open64
3202         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3203         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3204         _cflags_speed='-O2'
3205         _cflags_size='-Os'
3206         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3207     elif $_cc -V 2>&1 | grep -q Portland; then
3208         _type=pgi
3209         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3210         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3211         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3212         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3213         _cflags_noopt="-O1"
3214         _flags_filter=pgi_flags
3215     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3216         _type=armasm
3217         _ident=$($_cc | head -n1)
3218         # 4509: "This form of conditional instruction is deprecated"
3219         _flags="-nologo -ignore 4509"
3220         _flags_filter=armasm_flags
3221     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3222         _type=msvc
3223         _ident=$($_cc 2>&1 | head -n1)
3224         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3225         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3226         _cflags_speed="-O2"
3227         _cflags_size="-O1"
3228         if $_cc -nologo- 2>&1 | grep -q Linker; then
3229             _ld_o='-out:$@'
3230         else
3231             _ld_o='-Fe$@'
3232         fi
3233         _cc_o='-Fo$@'
3234         _cc_e='-P -Fi$@'
3235         _flags_filter=msvc_flags
3236         _ld_lib='lib%.a'
3237         _ld_path='-libpath:'
3238         _flags='-nologo'
3239         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3240     elif $_cc 2>&1 | grep -q Intel; then
3241         _type=icl
3242         _ident=$($_cc 2>&1 | head -n1)
3243         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3244         # Not only is O3 broken on 13.x+ but it is slower on all previous
3245         # versions (tested) as well.
3246         _cflags_speed="-O2"
3247         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3248         if $_cc 2>&1 | grep -q Linker; then
3249             _ld_o='-out:$@'
3250         else
3251             _ld_o='-Fe$@'
3252         fi
3253         _cc_o='-Fo$@'
3254         _cc_e='-P'
3255         _flags_filter=icl_flags
3256         _ld_lib='lib%.a'
3257         _ld_path='-libpath:'
3258         # -Qdiag-error to make icl error when seeing certain unknown arguments
3259         _flags='-nologo -Qdiag-error:4044,10157'
3260         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3261         # with MSVC which enables it by default.
3262         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3263     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3264         _type=cparser
3265         _ident=$($_cc --version | head -n1)
3266         _depflags='-MMD'
3267         _cflags_speed='-O4'
3268         _cflags_size='-O2'
3269         _flags_filter=cparser_flags
3270     fi
3271
3272     eval ${pfx}_type=\$_type
3273     eval ${pfx}_ident=\$_ident
3274 }
3275
3276 set_ccvars(){
3277     eval ${1}_C=\${_cc_c-\${${1}_C}}
3278     eval ${1}_E=\${_cc_e-\${${1}_E}}
3279     eval ${1}_O=\${_cc_o-\${${1}_O}}
3280
3281     if [ -n "$_depflags" ]; then
3282         eval ${1}_DEPFLAGS=\$_depflags
3283     else
3284         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3285         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3286         eval DEP${1}FLAGS=\$_flags
3287     fi
3288 }
3289
3290 probe_cc cc "$cc"
3291 cflags_filter=$_flags_filter
3292 cflags_speed=$_cflags_speed
3293 cflags_size=$_cflags_size
3294 cflags_noopt=$_cflags_noopt
3295 add_cflags $_flags $_cflags
3296 cc_ldflags=$_ldflags
3297 set_ccvars CC
3298
3299 probe_cc hostcc "$host_cc"
3300 host_cflags_filter=$_flags_filter
3301 add_host_cflags  $_flags $_cflags
3302 set_ccvars HOSTCC
3303
3304 test -n "$cc_type" && enable $cc_type ||
3305     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3306
3307 : ${as_default:=$cc}
3308 : ${objcc_default:=$cc}
3309 : ${dep_cc_default:=$cc}
3310 : ${ld_default:=$cc}
3311 : ${host_ld_default:=$host_cc}
3312 set_default ar as objcc dep_cc ld host_ld
3313
3314 probe_cc as "$as"
3315 asflags_filter=$_flags_filter
3316 add_asflags $_flags $_cflags
3317 set_ccvars AS
3318
3319 probe_cc objcc "$objcc"
3320 objcflags_filter=$_flags_filter
3321 add_objcflags $_flags $_cflags
3322 set_ccvars OBJC
3323
3324 probe_cc ld "$ld"
3325 ldflags_filter=$_flags_filter
3326 add_ldflags $_flags $_ldflags
3327 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3328 LD_O=${_ld_o-$LD_O}
3329 LD_LIB=${_ld_lib-$LD_LIB}
3330 LD_PATH=${_ld_path-$LD_PATH}
3331
3332 probe_cc hostld "$host_ld"
3333 host_ldflags_filter=$_flags_filter
3334 add_host_ldflags $_flags $_ldflags
3335 HOSTLD_O=${_ld_o-$HOSTLD_O}
3336
3337 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3338     probe_cc depcc "$dep_cc"
3339     CCDEP=${_DEPCMD:-$DEPCMD}
3340     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3341     DEPCCFLAGS=$_flags
3342 fi
3343
3344 if $ar 2>&1 | grep -q Microsoft; then
3345     arflags="-nologo"
3346     ar_o='-out:$@'
3347 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3348     arflags="rq"
3349     ar_o='$@'
3350 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3351     arflags='-Xany -r -c'
3352     ar_o='$@'
3353 else
3354     arflags="rc"
3355     ar_o='$@'
3356 fi
3357
3358 add_cflags $extra_cflags
3359 add_objcflags $extra_objcflags
3360 add_asflags $extra_cflags
3361
3362 if test -n "$sysroot"; then
3363     case "$cc_type" in
3364         gcc|llvm_gcc|clang)
3365             add_cppflags --sysroot="$sysroot"
3366             add_ldflags --sysroot="$sysroot"
3367         ;;
3368         tms470)
3369             add_cppflags -I"$sysinclude"
3370             add_ldflags  --sysroot="$sysroot"
3371         ;;
3372     esac
3373 fi
3374
3375 if test "$cpu" = host; then
3376     enabled cross_compile &&
3377         die "--cpu=host makes no sense when cross-compiling."
3378
3379     case "$cc_type" in
3380         gcc|llvm_gcc)
3381             check_native(){
3382                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3383                 sed -n "/cc1.*$1=/{
3384                             s/.*$1=\\([^ ]*\\).*/\\1/
3385                             p
3386                             q
3387                         }" $TMPE
3388             }
3389             cpu=$(check_native -march || check_native -mcpu)
3390         ;;
3391     esac
3392
3393     test "${cpu:-host}" = host &&
3394         die "--cpu=host not supported with compiler $cc"
3395 fi
3396
3397 # Deal with common $arch aliases
3398 case "$arch" in
3399     aarch64|arm64)
3400         arch="aarch64"
3401     ;;
3402     arm*)
3403         arch="arm"
3404     ;;
3405     mips*|IP*)
3406         case "$arch" in
3407         *el)
3408             add_cppflags -EL
3409             add_ldflags -EL
3410         ;;
3411         *eb)
3412             add_cppflags -EB
3413             add_ldflags -EB
3414         ;;
3415         esac
3416         arch="mips"
3417     ;;
3418     parisc*|hppa*)
3419         arch="parisc"
3420     ;;
3421     "Power Macintosh"|ppc*|powerpc*)
3422         arch="ppc"
3423     ;;
3424     s390|s390x)
3425         arch="s390"
3426     ;;
3427     sh4|sh)
3428         arch="sh4"
3429     ;;
3430     sun4u|sparc*)
3431         arch="sparc"
3432     ;;
3433     tilegx|tile-gx)
3434         arch="tilegx"
3435     ;;
3436     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3437         arch="x86"
3438     ;;
3439 esac
3440
3441 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3442 enable $arch
3443
3444 # Add processor-specific flags
3445 if enabled aarch64; then
3446
3447     case $cpu in
3448         armv*)
3449             cpuflags="-march=$cpu"
3450         ;;
3451         *)
3452             cpuflags="-mcpu=$cpu"
3453         ;;
3454     esac
3455
3456 elif enabled alpha; then
3457
3458     cpuflags="-mcpu=$cpu"
3459
3460 elif enabled arm; then
3461
3462     check_arm_arch() {
3463         check_cpp_condition stddef.h \
3464             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3465             $cpuflags
3466     }
3467
3468     probe_arm_arch() {
3469         if   check_arm_arch 4;        then echo armv4
3470         elif check_arm_arch 4T;       then echo armv4t
3471         elif check_arm_arch 5;        then echo armv5
3472         elif check_arm_arch 5E;       then echo armv5e
3473         elif check_arm_arch 5T;       then echo armv5t
3474         elif check_arm_arch 5TE;      then echo armv5te
3475         elif check_arm_arch 5TEJ;     then echo armv5te
3476         elif check_arm_arch 6;        then echo armv6
3477         elif check_arm_arch 6J;       then echo armv6j
3478         elif check_arm_arch 6K;       then echo armv6k
3479         elif check_arm_arch 6Z;       then echo armv6z
3480         elif check_arm_arch 6ZK;      then echo armv6zk
3481         elif check_arm_arch 6T2;      then echo armv6t2
3482         elif check_arm_arch 7;        then echo armv7
3483         elif check_arm_arch 7A  7_A;  then echo armv7-a
3484         elif check_arm_arch 7S;       then echo armv7-a
3485         elif check_arm_arch 7R  7_R;  then echo armv7-r
3486         elif check_arm_arch 7M  7_M;  then echo armv7-m
3487         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3488         elif check_arm_arch 8A  8_A;  then echo armv8-a
3489         fi
3490     }
3491
3492     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3493
3494     case $cpu in
3495         armv*)
3496             cpuflags="-march=$cpu"
3497             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3498         ;;
3499         *)
3500             cpuflags="-mcpu=$cpu"
3501             case $cpu in
3502                 cortex-a*)                               subarch=armv7a  ;;
3503                 cortex-r*)                               subarch=armv7r  ;;
3504                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3505                 arm11*)                                  subarch=armv6   ;;
3506                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3507                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3508                 *)                             subarch=$(probe_arm_arch) ;;
3509             esac
3510         ;;
3511     esac
3512
3513     case "$subarch" in
3514         armv5t*)    enable fast_clz                ;;
3515         armv[6-8]*) enable fast_clz fast_unaligned ;;
3516     esac
3517
3518 elif enabled avr32; then
3519
3520     case $cpu in
3521         ap7[02]0[0-2])
3522             subarch="avr32_ap"
3523             cpuflags="-mpart=$cpu"
3524         ;;
3525         ap)
3526             subarch="avr32_ap"
3527             cpuflags="-march=$cpu"
3528         ;;
3529         uc3[ab]*)
3530             subarch="avr32_uc"
3531             cpuflags="-mcpu=$cpu"
3532         ;;
3533         uc)
3534             subarch="avr32_uc"
3535             cpuflags="-march=$cpu"
3536         ;;
3537     esac
3538
3539 elif enabled bfin; then
3540
3541     cpuflags="-mcpu=$cpu"
3542
3543 elif enabled mips; then
3544
3545     cpuflags="-march=$cpu"
3546
3547 elif enabled ppc; then
3548
3549     disable ldbrx
3550
3551     case $(tolower $cpu) in
3552         601|ppc601|powerpc601)
3553             cpuflags="-mcpu=601"
3554             disable altivec
3555         ;;
3556         603*|ppc603*|powerpc603*)
3557             cpuflags="-mcpu=603"
3558             disable altivec
3559         ;;
3560         604*|ppc604*|powerpc604*)
3561             cpuflags="-mcpu=604"
3562             disable altivec
3563         ;;
3564         g3|75*|ppc75*|powerpc75*)
3565             cpuflags="-mcpu=750"
3566             disable altivec
3567         ;;
3568         g4|745*|ppc745*|powerpc745*)
3569             cpuflags="-mcpu=7450"
3570             disable vsx
3571         ;;
3572         74*|ppc74*|powerpc74*)
3573             cpuflags="-mcpu=7400"
3574             disable vsx
3575         ;;
3576         g5|970|ppc970|powerpc970)
3577             cpuflags="-mcpu=970"
3578             disable vsx
3579         ;;
3580         power[3-6]*)
3581             cpuflags="-mcpu=$cpu"
3582             disable vsx
3583         ;;
3584         power[7-8]*)
3585             cpuflags="-mcpu=$cpu"
3586             enable ldbrx
3587         ;;
3588         cell)
3589             cpuflags="-mcpu=cell"
3590             enable ldbrx
3591             disable vsx
3592         ;;
3593         e500mc)
3594             cpuflags="-mcpu=e500mc"
3595             disable altivec
3596         ;;
3597         e500v2)
3598             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3599             disable altivec
3600             disable dcbzl
3601         ;;
3602         e500)
3603             cpuflags="-mcpu=8540 -mhard-float"
3604             disable altivec
3605             disable dcbzl
3606         ;;
3607     esac
3608
3609 elif enabled sparc; then
3610
3611     case $cpu in
3612         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3613             cpuflags="-mcpu=$cpu"
3614         ;;
3615         ultrasparc*|niagara[234])
3616             cpuflags="-mcpu=$cpu"
3617         ;;
3618     esac
3619
3620 elif enabled x86; then
3621
3622     case $cpu in
3623         i[345]86|pentium)
3624             cpuflags="-march=$cpu"
3625             disable i686
3626             disable mmx
3627         ;;
3628         # targets that do NOT support nopl and conditional mov (cmov)
3629         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3630             cpuflags="-march=$cpu"
3631             disable i686
3632         ;;
3633         # targets that do support nopl and conditional mov (cmov)
3634         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3635             cpuflags="-march=$cpu"
3636             enable i686
3637             enable fast_cmov
3638         ;;
3639         # targets that do support conditional mov but on which it's slow
3640         pentium4|pentium4m|prescott|nocona)
3641             cpuflags="-march=$cpu"
3642             enable i686
3643             disable fast_cmov
3644         ;;
3645     esac
3646
3647 fi
3648
3649 if [ "$cpu" != generic ]; then
3650     add_cflags  $cpuflags
3651     add_asflags $cpuflags
3652     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3653 fi
3654
3655 # compiler sanity check
3656 check_exec <<EOF
3657 int main(void){ return 0; }
3658 EOF
3659 if test "$?" != 0; then
3660     echo "$cc is unable to create an executable file."
3661     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3662         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3663         echo "Only do this if you know what cross compiling means."
3664     fi
3665     die "C compiler test failed."
3666 fi
3667
3668 add_cppflags -D_ISOC99_SOURCE
3669 check_cflags -std=c99
3670 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3671 #include <stdlib.h>
3672 EOF
3673 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3674 #include <stdlib.h>
3675 EOF
3676
3677 add_host_cppflags -D_ISOC99_SOURCE
3678 check_host_cflags -std=c99
3679 check_host_cflags -Wall
3680 check_host_cflags -O3
3681
3682 check_64bit(){
3683     arch32=$1
3684     arch64=$2
3685     expr=$3
3686     check_code cc "" "int test[2*($expr) - 1]" &&
3687         subarch=$arch64 || subarch=$arch32
3688 }
3689
3690 case "$arch" in
3691     aarch64|alpha|ia64)
3692         spic=$shared
3693     ;;
3694     mips)
3695         check_64bit mips mips64 '_MIPS_SIM > 1'
3696         spic=$shared
3697     ;;
3698     parisc)
3699         check_64bit parisc parisc64 'sizeof(void *) > 4'
3700         spic=$shared
3701     ;;
3702     ppc)
3703         check_64bit ppc ppc64 'sizeof(void *) > 4'
3704         spic=$shared
3705     ;;
3706     s390)
3707         check_64bit s390 s390x 'sizeof(void *) > 4'
3708         spic=$shared
3709     ;;
3710     sparc)
3711         check_64bit sparc sparc64 'sizeof(void *) > 4'
3712         spic=$shared
3713     ;;
3714     x86)
3715         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3716         if test "$subarch" = "x86_64"; then
3717             spic=$shared
3718         fi
3719     ;;
3720 esac
3721
3722 enable $subarch
3723 enabled spic && enable_weak pic
3724
3725 # OS specific
3726 case $target_os in
3727     aix)
3728         SHFLAGS=-shared
3729         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3730         enabled shared && add_ldflags -Wl,-brtl
3731         ;;
3732     android)
3733         disable symver
3734         enable section_data_rel_ro
3735         SLIB_INSTALL_NAME='$(SLIBNAME)'
3736         SLIB_INSTALL_LINKS=
3737         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3738         ;;
3739     haiku)
3740         prefix_default="/boot/common"
3741         network_extralibs="-lnetwork"
3742         host_libs=
3743         ;;
3744     sunos)
3745         SHFLAGS='-shared -Wl,-h,$$(@F)'
3746         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3747         network_extralibs="-lsocket -lnsl"
3748         # When using suncc to build, the Solaris linker will mark
3749         # an executable with each instruction set encountered by
3750         # the Solaris assembler.  As our libraries contain their own
3751         # guards for processor-specific code, instead suppress
3752         # generation of the HWCAPS ELF section on Solaris x86 only.
3753         enabled_all suncc x86 &&
3754             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3755             add_ldflags -Wl,-M,mapfile
3756         nm_default='nm -P -g'
3757         version_script='-M'
3758         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3759         ;;
3760     netbsd)
3761         disable symver
3762         oss_indev_extralibs="-lossaudio"
3763         oss_outdev_extralibs="-lossaudio"
3764         ;;
3765     openbsd|bitrig)
3766         disable symver
3767         SHFLAGS='-shared'
3768         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3769         SLIB_INSTALL_LINKS=
3770         oss_indev_extralibs="-lossaudio"
3771         oss_outdev_extralibs="-lossaudio"
3772         ;;
3773     dragonfly)
3774         disable symver
3775         ;;
3776     freebsd)
3777         ;;
3778     b