avprobe: Zero the allocated avio buffer memory
[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     h264parse
1690     h264pred
1691     h264qpel
1692     hpeldsp
1693     huffman
1694     huffyuvdsp
1695     huffyuvencdsp
1696     idctdsp
1697     iirfilter
1698     imdct15
1699     intrax8
1700     iso_media
1701     ividsp
1702     jpegtables
1703     libx262
1704     lgplv3
1705     lpc
1706     lzf
1707     me_cmp
1708     mpeg_er
1709     mpegaudio
1710     mpegaudiodsp
1711     mpegvideo
1712     mpegvideoenc
1713     mss34dsp
1714     pixblockdsp
1715     qpeldsp
1716     qsv
1717     qsvdec
1718     qsvenc
1719     rangecoder
1720     riffdec
1721     riffenc
1722     rtpdec
1723     rtpenc_chain
1724     rv34dsp
1725     sinewin
1726     snappy
1727     srtp
1728     startcode
1729     texturedsp
1730     texturedspenc
1731     tpeldsp
1732     vaapi_encode
1733     vc1dsp
1734     videodsp
1735     vp3dsp
1736     vp56dsp
1737     vp8dsp
1738     wma_freqs
1739     wmv2dsp
1740 "
1741
1742 CMDLINE_SELECT="
1743     $ARCH_EXT_LIST
1744     $CONFIG_LIST
1745     $HAVE_LIST_CMDLINE
1746     $THREADS_LIST
1747     asm
1748     cross_compile
1749     debug
1750     extra_warnings
1751     logging
1752     lto
1753     optimizations
1754     rpath
1755 "
1756
1757 PATHS_LIST="
1758     bindir
1759     datadir
1760     docdir
1761     incdir
1762     libdir
1763     mandir
1764     prefix
1765     shlibdir
1766 "
1767
1768 CMDLINE_SET="
1769     $PATHS_LIST
1770     ar
1771     arch
1772     as
1773     build_suffix
1774     cc
1775     objcc
1776     cpu
1777     cross_prefix
1778     custom_allocator
1779     dep_cc
1780     env
1781     extra_version
1782     host_cc
1783     host_cflags
1784     host_ld
1785     host_ldflags
1786     host_libs
1787     host_os
1788     ld
1789     logfile
1790     malloc_prefix
1791     nm
1792     optflags
1793     pkg_config
1794     pkg_config_flags
1795     random_seed
1796     samples
1797     sysinclude
1798     sysroot
1799     target_exec
1800     target_os
1801     target_path
1802     target_samples
1803     toolchain
1804 "
1805
1806 CMDLINE_APPEND="
1807     extra_cflags
1808     extra_objcflags
1809     host_cppflags
1810 "
1811
1812 # code dependency declarations
1813
1814 # architecture extensions
1815
1816 armv5te_deps="arm"
1817 armv6_deps="arm"
1818 armv6t2_deps="arm"
1819 armv8_deps="aarch64"
1820 neon_deps_any="aarch64 arm"
1821 intrinsics_neon_deps="neon"
1822 vfp_deps_any="aarch64 arm"
1823 vfpv3_deps="vfp"
1824
1825 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1826
1827 altivec_deps="ppc"
1828 ppc4xx_deps="ppc"
1829 vsx_deps="altivec"
1830 power8_deps="vsx"
1831
1832 cpunop_deps="i686"
1833 x86_64_select="i686"
1834 x86_64_suggest="fast_cmov"
1835
1836 amd3dnow_deps="mmx"
1837 amd3dnowext_deps="amd3dnow"
1838 i686_deps="x86"
1839 mmx_deps="x86"
1840 mmxext_deps="mmx"
1841 sse_deps="mmxext"
1842 sse2_deps="sse"
1843 sse3_deps="sse2"
1844 ssse3_deps="sse3"
1845 sse4_deps="ssse3"
1846 sse42_deps="sse4"
1847 avx_deps="sse42"
1848 xop_deps="avx"
1849 fma3_deps="avx"
1850 fma4_deps="avx"
1851 avx2_deps="avx"
1852
1853 mmx_external_deps="yasm"
1854 mmx_inline_deps="inline_asm"
1855 mmx_suggest="mmx_external mmx_inline"
1856
1857 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1858     eval dep=\$${ext}_deps
1859     eval ${ext}_external_deps='"${dep}_external"'
1860     eval ${ext}_inline_deps='"${dep}_inline"'
1861     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1862 done
1863
1864 aligned_stack_if_any="aarch64 ppc x86"
1865 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1866 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1867 fast_unaligned_if_any="aarch64 ppc x86"
1868 simd_align_16_if_any="altivec neon sse"
1869
1870 # system capabilities
1871 symver_if_any="symver_asm_label symver_gnu_asm"
1872 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1873
1874 # threading support
1875 atomics_gcc_if="sync_val_compare_and_swap"
1876 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1877 atomics_win32_if="MemoryBarrier"
1878 atomics_native_if_any="$ATOMICS_LIST"
1879 w32threads_deps="atomics_native"
1880 threads_if_any="$THREADS_LIST"
1881
1882 # subsystems
1883 dct_select="rdft"
1884 dirac_parse_select="golomb"
1885 error_resilience_select="me_cmp"
1886 faandct_deps="faan fdctdsp"
1887 faanidct_deps="faan idctdsp"
1888 h264dsp_select="startcode"
1889 intrax8_select="blockdsp idctdsp"
1890 mdct_select="fft"
1891 rdft_select="fft"
1892 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1893 mpeg_er_select="error_resilience"
1894 mpegaudio_select="mpegaudiodsp"
1895 mpegaudiodsp_select="dct"
1896 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1897 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1898 vc1dsp_select="h264chroma qpeldsp startcode"
1899
1900 # decoders / encoders
1901 aac_decoder_select="imdct15 mdct sinewin"
1902 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1903 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1904 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1905 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1906 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1907 adpcm_g722_decoder_select="g722dsp"
1908 adpcm_g722_encoder_select="g722dsp"
1909 aic_decoder_select="golomb idctdsp"
1910 alac_encoder_select="lpc"
1911 als_decoder_select="bswapdsp"
1912 amrnb_decoder_select="lsp"
1913 amrwb_decoder_select="lsp"
1914 amv_decoder_select="sp5x_decoder"
1915 ape_decoder_select="bswapdsp"
1916 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1917 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1918 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1919 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1920 atrac1_decoder_select="mdct sinewin"
1921 atrac3_decoder_select="mdct"
1922 atrac3p_decoder_select="mdct sinewin"
1923 bink_decoder_select="blockdsp hpeldsp"
1924 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1925 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1926 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1927 cllc_decoder_select="bswapdsp"
1928 comfortnoise_encoder_select="lpc"
1929 cook_decoder_select="audiodsp mdct sinewin"
1930 cscd_decoder_select="lzo"
1931 cscd_decoder_suggest="zlib"
1932 dca_decoder_select="fmtconvert mdct"
1933 dds_decoder_select="texturedsp"
1934 dnxhd_decoder_select="blockdsp idctdsp"
1935 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1936 dvvideo_decoder_select="dvprofile idctdsp"
1937 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1938 dxa_decoder_deps="zlib"
1939 dxv_decoder_select="lzf texturedsp"
1940 eac3_decoder_select="ac3_decoder"
1941 eac3_encoder_select="ac3_encoder"
1942 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1943 eatgq_decoder_select="aandcttables idctdsp"
1944 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1945 exr_decoder_deps="zlib"
1946 ffv1_decoder_select="golomb rangecoder"
1947 ffv1_encoder_select="rangecoder"
1948 ffvhuff_decoder_select="huffyuv_decoder"
1949 ffvhuff_encoder_select="huffyuv_encoder"
1950 fic_decoder_select="golomb"
1951 flac_decoder_select="flacdsp golomb"
1952 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1953 flashsv_decoder_deps="zlib"
1954 flashsv_encoder_deps="zlib"
1955 flashsv2_decoder_deps="zlib"
1956 flv_decoder_select="h263_decoder"
1957 flv_encoder_select="h263_encoder"
1958 fourxm_decoder_select="blockdsp bswapdsp"
1959 fraps_decoder_select="bswapdsp huffman"
1960 g2m_decoder_deps="zlib"
1961 g2m_decoder_select="blockdsp idctdsp jpegtables"
1962 h261_decoder_select="mpeg_er mpegvideo"
1963 h261_encoder_select="aandcttables mpegvideoenc"
1964 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1965 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1966 h263i_decoder_select="h263_decoder"
1967 h263p_encoder_select="h263_encoder"
1968 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1969 h264_decoder_suggest="error_resilience"
1970 hap_decoder_select="snappy texturedsp"
1971 hap_encoder_deps="libsnappy"
1972 hap_encoder_select="texturedspenc"
1973 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1974 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1975 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1976 iac_decoder_select="imc_decoder"
1977 imc_decoder_select="bswapdsp fft mdct sinewin"
1978 indeo3_decoder_select="hpeldsp"
1979 indeo4_decoder_select="ividsp"
1980 indeo5_decoder_select="ividsp"
1981 interplay_video_decoder_select="hpeldsp"
1982 jpegls_decoder_select="golomb mjpeg_decoder"
1983 jpegls_encoder_select="golomb"
1984 jv_decoder_select="blockdsp"
1985 lagarith_decoder_select="huffyuvdsp"
1986 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1987 loco_decoder_select="golomb"
1988 magicyuv_decoder_select="huffyuvdsp"
1989 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1990 metasound_decoder_select="lsp mdct sinewin"
1991 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1992 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1993 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1994 mjpegb_decoder_select="mjpeg_decoder"
1995 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1996 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1997 mlp_decoder_select="mlp_parser"
1998 motionpixels_decoder_select="bswapdsp"
1999 mp1_decoder_select="mpegaudio"
2000 mp1float_decoder_select="mpegaudio"
2001 mp2_decoder_select="mpegaudio"
2002 mp2float_decoder_select="mpegaudio"
2003 mp3_decoder_select="mpegaudio"
2004 mp3adu_decoder_select="mpegaudio"
2005 mp3adufloat_decoder_select="mpegaudio"
2006 mp3float_decoder_select="mpegaudio"
2007 mp3on4_decoder_select="mpegaudio"
2008 mp3on4float_decoder_select="mpegaudio"
2009 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2010 mpc8_decoder_select="mpegaudiodsp"
2011 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2012 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2013 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2014 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2015 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2016 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2017 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2018 mpeg4_encoder_select="h263_encoder"
2019 msa1_decoder_select="mss34dsp"
2020 msmpeg4v1_decoder_select="h263_decoder"
2021 msmpeg4v2_decoder_select="h263_decoder"
2022 msmpeg4v2_encoder_select="h263_encoder"
2023 msmpeg4v3_decoder_select="h263_decoder"
2024 msmpeg4v3_encoder_select="h263_encoder"
2025 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2026 mts2_decoder_select="mss34dsp"
2027 mxpeg_decoder_select="mjpeg_decoder"
2028 nellymoser_decoder_select="mdct sinewin"
2029 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2030 nuv_decoder_select="idctdsp lzo"
2031 on2avc_decoder_select="mdct"
2032 opus_decoder_deps="avresample"
2033 opus_decoder_select="imdct15"
2034 png_decoder_deps="zlib"
2035 png_encoder_deps="zlib"
2036 png_encoder_select="huffyuvencdsp"
2037 prores_decoder_select="idctdsp"
2038 prores_encoder_select="fdctdsp"
2039 qcelp_decoder_select="lsp"
2040 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2041 ra_144_encoder_select="audio_frame_queue lpc"
2042 ralf_decoder_select="golomb"
2043 rscc_decoder_deps="zlib"
2044 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2045 rv10_encoder_select="h263_encoder"
2046 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2047 rv20_encoder_select="h263_encoder"
2048 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2049 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2050 screenpresso_decoder_deps="zlib"
2051 shorten_decoder_select="golomb"
2052 sipr_decoder_select="lsp"
2053 sp5x_decoder_select="mjpeg_decoder"
2054 svq1_decoder_select="hpeldsp"
2055 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2056 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2057 svq3_decoder_suggest="zlib"
2058 tak_decoder_select="audiodsp"
2059 tdsc_decoder_deps="zlib"
2060 tdsc_decoder_select="mjpeg_decoder"
2061 theora_decoder_select="vp3_decoder"
2062 thp_decoder_select="mjpeg_decoder"
2063 tiff_decoder_suggest="zlib"
2064 tiff_encoder_suggest="zlib"
2065 truehd_decoder_select="mlp_decoder"
2066 truemotion2_decoder_select="bswapdsp"
2067 truespeech_decoder_select="bswapdsp"
2068 tscc_decoder_deps="zlib"
2069 txd_decoder_select="texturedsp"
2070 twinvq_decoder_select="mdct lsp sinewin"
2071 utvideo_decoder_select="bswapdsp"
2072 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2073 vble_decoder_select="huffyuvdsp"
2074 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2075 vc1image_decoder_select="vc1_decoder"
2076 vorbis_decoder_select="mdct"
2077 vorbis_encoder_select="mdct"
2078 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2079 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2080 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2081 vp6a_decoder_select="vp6_decoder"
2082 vp6f_decoder_select="vp6_decoder"
2083 vp7_decoder_select="h264pred videodsp vp8dsp"
2084 vp8_decoder_select="h264pred videodsp vp8dsp"
2085 vp9_decoder_select="videodsp"
2086 webp_decoder_select="vp8_decoder"
2087 wmapro_decoder_select="mdct sinewin wma_freqs"
2088 wmav1_decoder_select="mdct sinewin wma_freqs"
2089 wmav1_encoder_select="mdct sinewin wma_freqs"
2090 wmav2_decoder_select="mdct sinewin wma_freqs"
2091 wmav2_encoder_select="mdct sinewin wma_freqs"
2092 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2093 wmv1_decoder_select="h263_decoder"
2094 wmv1_encoder_select="h263_encoder"
2095 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2096 wmv2_encoder_select="h263_encoder wmv2dsp"
2097 wmv3_decoder_select="vc1_decoder"
2098 wmv3image_decoder_select="wmv3_decoder"
2099 zerocodec_decoder_deps="zlib"
2100 zlib_decoder_deps="zlib"
2101 zlib_encoder_deps="zlib"
2102 zmbv_decoder_deps="zlib"
2103 zmbv_encoder_deps="zlib"
2104
2105 # hardware accelerators
2106 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2107 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2108 vaapi_deps="va_va_h"
2109 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2110 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2111 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2112
2113 h263_vaapi_hwaccel_deps="vaapi"
2114 h263_vaapi_hwaccel_select="h263_decoder"
2115 h264_d3d11va_hwaccel_deps="d3d11va"
2116 h264_d3d11va_hwaccel_select="h264_decoder"
2117 h264_dxva2_hwaccel_deps="dxva2"
2118 h264_dxva2_hwaccel_select="h264_decoder"
2119 h264_mmal_decoder_deps="mmal"
2120 h264_mmal_decoder_select="mmal"
2121 h264_mmal_hwaccel_deps="mmal"
2122 h264_omx_encoder_deps="omx"
2123 h264_qsv_hwaccel_deps="libmfx"
2124 h264_vaapi_hwaccel_deps="vaapi"
2125 h264_vaapi_hwaccel_select="h264_decoder"
2126 h264_vda_hwaccel_deps="vda"
2127 h264_vda_hwaccel_select="h264_decoder"
2128 h264_vda_old_hwaccel_deps="vda"
2129 h264_vda_old_hwaccel_select="h264_decoder"
2130 h264_vdpau_hwaccel_deps="vdpau"
2131 h264_vdpau_hwaccel_select="h264_decoder"
2132 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2133 hevc_d3d11va_hwaccel_select="hevc_decoder"
2134 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2135 hevc_dxva2_hwaccel_select="hevc_decoder"
2136 hevc_qsv_hwaccel_deps="libmfx"
2137 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2138 hevc_vdpau_hwaccel_select="hevc_decoder"
2139 mpeg1_vdpau_hwaccel_deps="vdpau"
2140 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2141 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2142 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2143 mpeg2_dxva2_hwaccel_deps="dxva2"
2144 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2145 mpeg2_mmal_decoder_deps="mmal"
2146 mpeg2_mmal_decoder_select="mmal"
2147 mpeg2_mmal_hwaccel_deps="mmal"
2148 mpeg2_qsv_hwaccel_deps="libmfx"
2149 mpeg2_vaapi_hwaccel_deps="vaapi"
2150 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2151 mpeg2_vdpau_hwaccel_deps="vdpau"
2152 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2153 mpeg4_omx_encoder_deps="omx"
2154 mpeg4_vaapi_hwaccel_deps="vaapi"
2155 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2156 mpeg4_vdpau_hwaccel_deps="vdpau"
2157 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2158 vc1_d3d11va_hwaccel_deps="d3d11va"
2159 vc1_d3d11va_hwaccel_select="vc1_decoder"
2160 vc1_dxva2_hwaccel_deps="dxva2"
2161 vc1_dxva2_hwaccel_select="vc1_decoder"
2162 vc1_mmal_decoder_deps="mmal"
2163 vc1_mmal_decoder_select="mmal"
2164 vc1_mmal_hwaccel_deps="mmal"
2165 vc1_vaapi_hwaccel_deps="vaapi"
2166 vc1_vaapi_hwaccel_select="vc1_decoder"
2167 vc1_vdpau_hwaccel_deps="vdpau"
2168 vc1_vdpau_hwaccel_select="vc1_decoder"
2169 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2170 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2171 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2172 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2173
2174 # hardware-accelerated codecs
2175 nvenc_deps_any="dlopen LoadLibrary"
2176 nvenc_extralibs='$ldl'
2177 omx_deps="dlopen pthreads"
2178 omx_extralibs='$ldl'
2179 qsvdec_select="qsv"
2180 qsvenc_select="qsv"
2181 vaapi_encode_deps="vaapi"
2182
2183 hwupload_cuda_filter_deps="cuda"
2184 scale_npp_filter_deps="cuda libnpp"
2185
2186 h264_nvenc_encoder_deps="nvenc"
2187 h264_qsv_decoder_deps="libmfx"
2188 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2189 h264_qsv_encoder_deps="libmfx"
2190 h264_qsv_encoder_select="qsvenc"
2191 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2192 h264_vaapi_encoder_select="vaapi_encode golomb"
2193
2194 hevc_nvenc_encoder_deps="nvenc"
2195 hevc_qsv_decoder_deps="libmfx"
2196 hevc_qsv_encoder_deps="libmfx"
2197 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2198 hevc_qsv_encoder_select="qsvenc"
2199 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2200 hevc_vaapi_encoder_select="vaapi_encode golomb"
2201 mpeg2_qsv_decoder_deps="libmfx"
2202 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2203 mpeg2_qsv_encoder_deps="libmfx"
2204 mpeg2_qsv_encoder_select="qsvenc"
2205
2206 nvenc_h264_encoder_deps="nvenc"
2207 nvenc_hevc_encoder_deps="nvenc"
2208
2209 # parsers
2210 h264_parser_select="golomb h264dsp h264parse"
2211 hevc_parser_select="golomb"
2212 mpegvideo_parser_select="mpegvideo"
2213 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2214 vc1_parser_select="vc1dsp"
2215
2216 # bitstream_filters
2217 mjpeg2jpeg_bsf_select="jpegtables"
2218
2219 # external libraries
2220 libdcadec_decoder_deps="libdcadec"
2221 libfaac_encoder_deps="libfaac"
2222 libfaac_encoder_select="audio_frame_queue"
2223 libfdk_aac_decoder_deps="libfdk_aac"
2224 libfdk_aac_encoder_deps="libfdk_aac"
2225 libfdk_aac_encoder_select="audio_frame_queue"
2226 libgsm_decoder_deps="libgsm"
2227 libgsm_encoder_deps="libgsm"
2228 libgsm_ms_decoder_deps="libgsm"
2229 libgsm_ms_encoder_deps="libgsm"
2230 libilbc_decoder_deps="libilbc"
2231 libilbc_encoder_deps="libilbc"
2232 libkvazaar_encoder_deps="libkvazaar"
2233 libmp3lame_encoder_deps="libmp3lame"
2234 libmp3lame_encoder_select="audio_frame_queue"
2235 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2236 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2237 libopencore_amrnb_encoder_select="audio_frame_queue"
2238 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2239 libopenh264_decoder_deps="libopenh264"
2240 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2241 libopenh264_encoder_deps="libopenh264"
2242 libopenjpeg_decoder_deps="libopenjpeg"
2243 libopenjpeg_encoder_deps="libopenjpeg"
2244 libopus_decoder_deps="libopus"
2245 libopus_encoder_deps="libopus"
2246 libopus_encoder_select="audio_frame_queue"
2247 libschroedinger_decoder_deps="libschroedinger"
2248 libschroedinger_encoder_deps="libschroedinger"
2249 libspeex_decoder_deps="libspeex"
2250 libspeex_encoder_deps="libspeex"
2251 libspeex_encoder_select="audio_frame_queue"
2252 libtheora_encoder_deps="libtheora"
2253 libtwolame_encoder_deps="libtwolame"
2254 libvo_aacenc_encoder_deps="libvo_aacenc"
2255 libvo_aacenc_encoder_select="audio_frame_queue"
2256 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2257 libvorbis_encoder_deps="libvorbis"
2258 libvorbis_encoder_select="audio_frame_queue"
2259 libvpx_vp8_decoder_deps="libvpx"
2260 libvpx_vp8_encoder_deps="libvpx"
2261 libvpx_vp9_decoder_deps="libvpx"
2262 libvpx_vp9_encoder_deps="libvpx"
2263 libwavpack_encoder_deps="libwavpack"
2264 libwebp_encoder_deps="libwebp"
2265 libx262_encoder_deps="libx262"
2266 libx264_encoder_deps="libx264"
2267 libx265_encoder_deps="libx265"
2268 libxavs_encoder_deps="libxavs"
2269 libxvid_encoder_deps="libxvid"
2270
2271 # demuxers / muxers
2272 ac3_demuxer_select="ac3_parser"
2273 asf_demuxer_select="riffdec"
2274 asf_muxer_select="riffenc"
2275 asf_stream_muxer_select="asf_muxer"
2276 avi_demuxer_select="iso_media riffdec"
2277 avi_muxer_select="riffenc"
2278 avisynth_demuxer_deps="avisynth"
2279 avisynth_demuxer_select="riffdec"
2280 caf_demuxer_select="iso_media riffdec"
2281 dash_muxer_select="mp4_muxer"
2282 dirac_demuxer_select="dirac_parser"
2283 dv_demuxer_select="dvprofile"
2284 dv_muxer_select="dvprofile"
2285 dxa_demuxer_select="riffdec"
2286 eac3_demuxer_select="ac3_parser"
2287 f4v_muxer_select="mov_muxer"
2288 flac_demuxer_select="flac_parser"
2289 hds_muxer_select="flv_muxer"
2290 hls_muxer_select="mpegts_muxer"
2291 ipod_muxer_select="mov_muxer"
2292 ismv_muxer_select="mov_muxer"
2293 matroska_audio_muxer_select="matroska_muxer"
2294 matroska_demuxer_select="iso_media riffdec"
2295 matroska_demuxer_suggest="bzlib lzo zlib"
2296 matroska_muxer_select="iso_media riffenc"
2297 mmf_muxer_select="riffenc"
2298 mov_demuxer_select="iso_media riffdec"
2299 mov_demuxer_suggest="zlib"
2300 mov_muxer_select="iso_media riffenc rtpenc_chain"
2301 mp3_demuxer_select="mpegaudio_parser"
2302 mp4_muxer_select="mov_muxer"
2303 mpegts_demuxer_select="iso_media"
2304 mpegts_muxer_select="adts_muxer latm_muxer"
2305 mpegtsraw_demuxer_select="mpegts_demuxer"
2306 mxf_d10_muxer_select="mxf_muxer"
2307 nut_muxer_select="riffenc"
2308 nuv_demuxer_select="riffdec"
2309 oga_muxer_select="ogg_muxer"
2310 ogg_demuxer_select="dirac_parse"
2311 opus_muxer_select="ogg_muxer"
2312 psp_muxer_select="mov_muxer"
2313 rtp_demuxer_select="sdp_demuxer"
2314 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2315 rtsp_demuxer_select="http_protocol rtpdec"
2316 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2317 sap_demuxer_select="sdp_demuxer"
2318 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2319 sdp_demuxer_select="rtpdec"
2320 smoothstreaming_muxer_select="ismv_muxer"
2321 spdif_muxer_select="aac_parser"
2322 spx_muxer_select="ogg_muxer"
2323 swf_demuxer_suggest="zlib"
2324 tak_demuxer_select="tak_parser"
2325 tg2_muxer_select="mov_muxer"
2326 tgp_muxer_select="mov_muxer"
2327 w64_demuxer_select="wav_demuxer"
2328 wav_demuxer_select="riffdec"
2329 wav_muxer_select="riffenc"
2330 webm_muxer_select="iso_media riffenc"
2331 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2332 wtv_demuxer_select="mpegts_demuxer riffdec"
2333 xmv_demuxer_select="riffdec"
2334 xwma_demuxer_select="riffdec"
2335
2336 # indevs / outdevs
2337 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2338 alsa_outdev_deps="alsa_asoundlib_h"
2339 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2340 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2341 dv1394_indev_deps="dv1394"
2342 dv1394_indev_select="dv_demuxer"
2343 fbdev_indev_deps="linux_fb_h"
2344 jack_indev_deps="jack_jack_h"
2345 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2346 libcdio_indev_deps="libcdio"
2347 libdc1394_indev_deps="libdc1394"
2348 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2349 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2350 pulse_indev_deps="libpulse"
2351 sndio_indev_deps="sndio_h"
2352 sndio_outdev_deps="sndio_h"
2353 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2354 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2355 vfwcap_indev_extralibs="-lavicap32"
2356 x11grab_indev_deps="x11grab"
2357 x11grab_xcb_indev_deps="libxcb"
2358
2359 # protocols
2360 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2361 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2362 ffrtmpcrypt_protocol_select="tcp_protocol"
2363 ffrtmphttp_protocol_deps="!librtmp_protocol"
2364 ffrtmphttp_protocol_select="http_protocol"
2365 gopher_protocol_select="network"
2366 http_protocol_select="tcp_protocol"
2367 httpproxy_protocol_select="tcp_protocol"
2368 https_protocol_select="tls_protocol"
2369 icecast_protocol_select="http_protocol"
2370 librtmp_protocol_deps="librtmp"
2371 librtmpe_protocol_deps="librtmp"
2372 librtmps_protocol_deps="librtmp"
2373 librtmpt_protocol_deps="librtmp"
2374 librtmpte_protocol_deps="librtmp"
2375 mmsh_protocol_select="http_protocol"
2376 mmst_protocol_select="network"
2377 rtmp_protocol_deps="!librtmp_protocol"
2378 rtmp_protocol_select="tcp_protocol"
2379 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2380 rtmps_protocol_deps="!librtmp_protocol"
2381 rtmps_protocol_select="tls_protocol"
2382 rtmpt_protocol_select="ffrtmphttp_protocol"
2383 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2384 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2385 rtp_protocol_select="udp_protocol"
2386 sctp_protocol_deps="struct_sctp_event_subscribe"
2387 sctp_protocol_select="network"
2388 srtp_protocol_select="rtp_protocol srtp"
2389 tcp_protocol_select="network"
2390 tls_gnutls_protocol_deps="gnutls"
2391 tls_gnutls_protocol_select="tcp_protocol"
2392 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2393 tls_openssl_protocol_select="tcp_protocol"
2394 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2395 udp_protocol_select="network"
2396 unix_protocol_deps="sys_un_h"
2397 unix_protocol_select="network"
2398
2399 # filters
2400 blackframe_filter_deps="gpl"
2401 boxblur_filter_deps="gpl"
2402 bs2b_filter_deps="libbs2b"
2403 cropdetect_filter_deps="gpl"
2404 delogo_filter_deps="gpl"
2405 drawtext_filter_deps="libfreetype"
2406 frei0r_filter_deps="frei0r dlopen"
2407 frei0r_filter_extralibs='$ldl'
2408 frei0r_src_filter_deps="frei0r dlopen"
2409 frei0r_src_filter_extralibs='$ldl'
2410 hqdn3d_filter_deps="gpl"
2411 interlace_filter_deps="gpl"
2412 ocv_filter_deps="libopencv"
2413 resample_filter_deps="avresample"
2414 scale_filter_deps="swscale"
2415 scale_qsv_filter_deps="libmfx"
2416 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2417
2418 # examples
2419 avcodec_example_deps="avcodec avutil"
2420 filter_audio_example_deps="avfilter avutil"
2421 metadata_example_deps="avformat avutil"
2422 output_example_deps="avcodec avformat avutil swscale"
2423 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2424 transcode_aac_example_deps="avcodec avformat avresample"
2425
2426 # libraries, in linking order
2427 avcodec_deps="avutil"
2428 avdevice_deps="avformat avcodec avutil"
2429 avfilter_deps="avutil"
2430 avformat_deps="avcodec avutil"
2431 avresample_deps="avutil"
2432 swscale_deps="avutil"
2433
2434 # programs
2435 avconv_deps="avcodec avfilter avformat avresample swscale"
2436 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2437                fps_filter null_filter resample_filter scale_filter
2438                setpts_filter trim_filter"
2439 avplay_deps="avcodec avfilter avformat avresample sdl"
2440 avplay_libs='$sdl_libs'
2441 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2442 avprobe_deps="avcodec avformat"
2443
2444 # documentation
2445 pod2man_deps="doc"
2446 texi2html_deps="doc"
2447
2448 # default parameters
2449
2450 logfile="config.log"
2451
2452 # installation paths
2453 prefix_default="/usr/local"
2454 bindir_default='${prefix}/bin'
2455 datadir_default='${prefix}/share/avconv'
2456 docdir_default='${prefix}/share/doc/libav'
2457 incdir_default='${prefix}/include'
2458 libdir_default='${prefix}/lib'
2459 mandir_default='${prefix}/share/man'
2460 shlibdir_default="$libdir_default"
2461
2462 # toolchain
2463 ar_default="ar"
2464 cc_default="gcc"
2465 host_cc_default="gcc"
2466 cp_f="cp -f"
2467 ln_s="ln -s -f"
2468 nm_default="nm -g"
2469 objformat="elf"
2470 pkg_config_default=pkg-config
2471 ranlib="ranlib"
2472 strip="strip"
2473 version_script='--version-script'
2474 yasmexe="yasm"
2475
2476 # machine
2477 arch_default=$(uname -m)
2478 cpu="generic"
2479 intrinsics="none"
2480
2481 # OS
2482 target_os_default=$(tolower $(uname -s))
2483 host_os=$target_os_default
2484
2485 # configurable options
2486 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2487
2488 enable asm
2489 enable debug
2490 enable doc
2491 enable faan faandct faanidct
2492 enable optimizations
2493 enable safe_bitstream_reader
2494 enable static
2495 enable swscale_alpha
2496 enable valgrind_backtrace
2497
2498 # By default, enable only those hwaccels that have no external dependencies.
2499 enable d3d11va dxva2 vda vdpau
2500
2501 # build settings
2502 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2503 LIBPREF="lib"
2504 LIBSUF=".a"
2505 FULLNAME='$(NAME)$(BUILDSUF)'
2506 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2507 SLIBPREF="lib"
2508 SLIBSUF=".so"
2509 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2510 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2511 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2512 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2513 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2514 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2515 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2516
2517 asflags_filter=echo
2518 cflags_filter=echo
2519 ldflags_filter=echo
2520
2521 AS_C='-c'
2522 AS_O='-o $@'
2523 CC_C='-c'
2524 CC_E='-E -o $@'
2525 CC_O='-o $@'
2526 OBJCC_C='-c'
2527 OBJCC_E='-E -o $@'
2528 OBJCC_O='-o $@'
2529 LD_O='-o $@'
2530 LD_LIB='-l%'
2531 LD_PATH='-L'
2532 HOSTCC_C='-c'
2533 HOSTCC_E='-E -o $@'
2534 HOSTCC_O='-o $@'
2535 HOSTLD_O='-o $@'
2536
2537 host_libs='-lm'
2538 host_cflags_filter=echo
2539 host_ldflags_filter=echo
2540
2541 target_path='$(CURDIR)'
2542
2543 # since the object filename is not given with the -MM flag, the compiler
2544 # is only able to print the basename, and we must add the path ourselves
2545 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2546 DEPFLAGS='-MM'
2547
2548 # find source path
2549 if test -f configure; then
2550     source_path=.
2551 else
2552     source_path=$(cd $(dirname "$0"); pwd)
2553     echo "$source_path" | grep -q '[[:blank:]]' &&
2554         die "Out of tree builds are impossible with whitespace in source path."
2555     test -e "$source_path/config.h" &&
2556         die "Out of tree builds are impossible with config.h in source dir."
2557 fi
2558
2559 for v in "$@"; do
2560     r=${v#*=}
2561     l=${v%"$r"}
2562     r=$(sh_quote "$r")
2563     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2564 done
2565
2566 find_things(){
2567     thing=$1
2568     pattern=$2
2569     file=$source_path/$3
2570     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2571 }
2572
2573 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2574 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2575 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2576 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2577 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2578 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2579 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2580 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2581 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2582
2583 find_things_extern(){
2584     thing=$1
2585     pattern=$2
2586     file=$source_path/$3
2587     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2588 }
2589
2590 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2591 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2592
2593 ALL_COMPONENTS="
2594     $BSF_LIST
2595     $DECODER_LIST
2596     $DEMUXER_LIST
2597     $ENCODER_LIST
2598     $FILTER_LIST
2599     $HWACCEL_LIST
2600     $INDEV_LIST
2601     $MUXER_LIST
2602     $OUTDEV_LIST
2603     $PARSER_LIST
2604     $PROTOCOL_LIST
2605 "
2606
2607 for n in $COMPONENT_LIST; do
2608     v=$(toupper ${n%s})_LIST
2609     eval enable \$$v
2610     eval ${n}_if_any="\$$v"
2611 done
2612
2613 enable $ARCH_EXT_LIST
2614
2615 die_unknown(){
2616     echo "Unknown option \"$1\"."
2617     echo "See $0 --help for available options."
2618     exit 1
2619 }
2620
2621 print_3_columns() {
2622     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2623 }
2624
2625 show_list() {
2626     suffix=_$1
2627     shift
2628     echo $* | sed s/$suffix//g | print_3_columns
2629     exit 0
2630 }
2631
2632 rand_list(){
2633     IFS=', '
2634     set -- $*
2635     unset IFS
2636     for thing; do
2637         comp=${thing%:*}
2638         prob=${thing#$comp}
2639         prob=${prob#:}
2640         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2641         echo "prob ${prob:-0.5}"
2642         printf '%s\n' $comp
2643     done
2644 }
2645
2646 do_random(){
2647     action=$1
2648     shift
2649     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2650     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2651 }
2652
2653 for opt do
2654     optval="${opt#*=}"
2655     case "$opt" in
2656         --extra-ldflags=*)
2657             add_ldflags $optval
2658         ;;
2659         --extra-ldexeflags=*)
2660             add_ldexeflags $optval
2661         ;;
2662         --extra-libs=*)
2663             add_extralibs $optval
2664         ;;
2665         --disable-devices)
2666             disable $INDEV_LIST $OUTDEV_LIST
2667         ;;
2668         --enable-debug=*)
2669             debuglevel="$optval"
2670         ;;
2671         --disable-programs)
2672             disable $PROGRAM_LIST
2673         ;;
2674         --disable-everything)
2675             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2676         ;;
2677         --disable-all)
2678             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2679             disable $LIBRARY_LIST $PROGRAM_LIST doc
2680         ;;
2681         --enable-random|--disable-random)
2682             action=${opt%%-random}
2683             do_random ${action#--} $COMPONENT_LIST
2684         ;;
2685         --enable-random=*|--disable-random=*)
2686             action=${opt%%-random=*}
2687             do_random ${action#--} $optval
2688         ;;
2689         --enable-*=*|--disable-*=*)
2690             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2691             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2692             eval list=\$$(toupper $thing)_LIST
2693             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2694             $action $(filter "$name" $list)
2695         ;;
2696         --enable-avserver|--disable-avserver*)
2697             warn "avserver has been removed, the ${opt} option is only"\
2698                  "provided for compatibility and will be removed in the future"
2699         ;;
2700         --enable-?*|--disable-?*)
2701             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2702             if is_in $option $COMPONENT_LIST; then
2703                 test $action = disable && action=unset
2704                 eval $action \$$(toupper ${option%s})_LIST
2705             elif is_in $option $CMDLINE_SELECT; then
2706                 $action $option
2707             else
2708                 die_unknown $opt
2709             fi
2710         ;;
2711         --list-*)
2712             NAME="${opt#--list-}"
2713             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2714             NAME=${NAME%s}
2715             eval show_list $NAME \$$(toupper $NAME)_LIST
2716         ;;
2717         --help|-h) show_help
2718         ;;
2719         *)
2720             optname="${opt%%=*}"
2721             optname="${optname#--}"
2722             optname=$(echo "$optname" | sed 's/-/_/g')
2723             if is_in $optname $CMDLINE_SET; then
2724                 eval $optname='$optval'
2725             elif is_in $optname $CMDLINE_APPEND; then
2726                 append $optname "$optval"
2727             else
2728                 die_unknown $opt
2729             fi
2730         ;;
2731     esac
2732 done
2733
2734 for e in $env; do
2735     eval "export $e"
2736 done
2737
2738 disabled logging && logfile=/dev/null
2739
2740 # Disable all the library-specific components if the library itself
2741 # is disabled, see AVCODEC_LIST and following _LIST variables.
2742
2743 disable_components(){
2744     disabled ${1} && disable $(
2745         eval components="\$$(toupper ${1})_COMPONENTS"
2746         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2747     )
2748 }
2749
2750 map 'disable_components $v' $LIBRARY_LIST
2751
2752 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2753 set >> $logfile
2754
2755 case "$toolchain" in
2756     *-asan)
2757         cc_default="${toolchain%-asan}"
2758         add_cflags  -fsanitize=address
2759         add_ldflags -fsanitize=address
2760     ;;
2761     *-msan)
2762         cc_default="${toolchain%-msan}"
2763         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2764         add_ldflags -fsanitize=memory
2765     ;;
2766     *-tsan)
2767         cc_default="${toolchain%-tsan}"
2768         add_cflags  -fsanitize=thread -pie
2769         add_ldflags -fsanitize=thread -pie
2770         case "$toolchain" in
2771             gcc-tsan)
2772                 add_cflags  -fPIC
2773                 add_ldflags -fPIC
2774                 ;;
2775         esac
2776     ;;
2777     *-usan)
2778         cc_default="${toolchain%-usan}"
2779         add_cflags  -fsanitize=undefined
2780         add_ldflags -fsanitize=undefined
2781         case "$toolchain" in
2782             clang-usan)
2783                 add_cflags -O1
2784                 ;;
2785         esac
2786     ;;
2787     valgrind-*)
2788         target_exec_default="valgrind"
2789         case "$toolchain" in
2790             valgrind-massif)
2791                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2792                 ;;
2793             valgrind-memcheck)
2794                 target_exec_args="--track-origins=yes --leak-check=full"
2795                 ;;
2796         esac
2797     ;;
2798     msvc)
2799         # Check whether the current MSVC version needs the C99 converter.
2800         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2801         # support enough of C99 to build libav. Default to the new
2802         # behaviour if the regexp was unable to match anything, since this
2803         # successfully parses the version number of existing supported
2804         # versions that require the converter (MSVC 2010 and 2012).
2805         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2806         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2807             cc_default="cl"
2808         else
2809             cc_default="c99wrap cl"
2810         fi
2811         ld_default="$source_path/compat/windows/mslink"
2812         nm_default="dumpbin -symbols"
2813         ar_default="lib"
2814         case "$arch" in
2815         arm*)
2816             as_default="armasm"
2817             ;;
2818         esac
2819         target_os_default="win32"
2820         # Use a relative path for TMPDIR. This makes sure all the
2821         # ffconf temp files are written with a relative path, avoiding
2822         # issues with msys/win32 path conversion for MSVC parameters
2823         # such as -Fo<file> or -out:<file>.
2824         TMPDIR=.
2825     ;;
2826     icl)
2827         cc_default="icl"
2828         ld_default="xilink"
2829         nm_default="dumpbin -symbols"
2830         ar_default="xilib"
2831         target_os_default="win32"
2832         TMPDIR=.
2833     ;;
2834     gcov)
2835         add_cflags  -fprofile-arcs -ftest-coverage
2836         add_ldflags -fprofile-arcs -ftest-coverage
2837     ;;
2838     llvm-cov)
2839         add_cflags -fprofile-arcs -ftest-coverage
2840         add_ldflags --coverage
2841     ;;
2842     hardened)
2843         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2844         add_cflags   -fno-strict-overflow -fstack-protector-all
2845         add_ldflags  -Wl,-z,relro -Wl,-z,now
2846     ;;
2847     ?*)
2848         die "Unknown toolchain $toolchain"
2849     ;;
2850 esac
2851
2852 test -n "$cross_prefix" && enable cross_compile
2853
2854 if enabled cross_compile; then
2855     test -n "$arch" && test -n "$target_os" ||
2856         die "Must specify target arch and OS when cross-compiling"
2857 fi
2858
2859 ar_default="${cross_prefix}${ar_default}"
2860 cc_default="${cross_prefix}${cc_default}"
2861 occ_default="${cross_prefix}${occ_default}"
2862 nm_default="${cross_prefix}${nm_default}"
2863 pkg_config_default="${cross_prefix}${pkg_config_default}"
2864 ranlib="${cross_prefix}${ranlib}"
2865 strip="${cross_prefix}${strip}"
2866
2867 sysinclude_default="${sysroot}/usr/include"
2868
2869 set_default arch cc pkg_config sysinclude target_exec target_os
2870 enabled cross_compile || host_cc_default=$cc
2871 set_default host_cc
2872
2873 if ! $pkg_config --version >/dev/null 2>&1; then
2874     warn "$pkg_config not found, library detection may fail."
2875     pkg_config=false
2876 fi
2877
2878 exesuf() {
2879     case $1 in
2880         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2881     esac
2882 }
2883
2884 EXESUF=$(exesuf $target_os)
2885 HOSTEXESUF=$(exesuf $host_os)
2886
2887 # set temporary file name
2888 : ${TMPDIR:=$TEMPDIR}
2889 : ${TMPDIR:=$TMP}
2890 : ${TMPDIR:=/tmp}
2891
2892 if ! check_cmd mktemp -u XXXXXX; then
2893     # simple replacement for missing mktemp
2894     # NOT SAFE FOR GENERAL USE
2895     mktemp(){
2896         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2897     }
2898 fi
2899
2900 tmpfile(){
2901     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2902         (set -C; exec > $tmp) 2>/dev/null ||
2903         die "Unable to create temporary file in $TMPDIR."
2904     append TMPFILES $tmp
2905     eval $1=$tmp
2906 }
2907
2908 trap 'rm -f -- $TMPFILES' EXIT
2909
2910 tmpfile TMPASM .asm
2911 tmpfile TMPC   .c
2912 tmpfile TMPE   $EXESUF
2913 tmpfile TMPH   .h
2914 tmpfile TMPO   .o
2915 tmpfile TMPS   .S
2916 tmpfile TMPSH  .sh
2917 tmpfile TMPV   .ver
2918
2919 unset -f mktemp
2920
2921 chmod +x $TMPE
2922
2923 # make sure we can execute files in $TMPDIR
2924 cat > $TMPSH 2>> $logfile <<EOF
2925 #! /bin/sh
2926 EOF
2927 chmod +x $TMPSH >> $logfile 2>&1
2928 if ! $TMPSH >> $logfile 2>&1; then
2929     cat <<EOF
2930 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2931 variable to another directory and make sure that it is not mounted noexec.
2932 EOF
2933     die "Sanity test failed."
2934 fi
2935
2936 armasm_flags(){
2937     for flag; do
2938         case $flag in
2939             # Filter out MSVC cl.exe options from cflags that shouldn't
2940             # be passed to gas-preprocessor
2941             -M[TD]*)                                            ;;
2942             *)                  echo $flag                      ;;
2943         esac
2944    done
2945 }
2946
2947 ccc_flags(){
2948     for flag; do
2949         case $flag in
2950             -std=c99)           echo -c99                       ;;
2951             -mcpu=*)            echo -arch ${flag#*=}           ;;
2952             -mieee)             echo -ieee                      ;;
2953             -O*|-fast)          echo $flag                      ;;
2954             -fno-math-errno)    echo -assume nomath_errno       ;;
2955             -g)                 echo -g3                        ;;
2956             -Wall)              echo -msg_enable level2         ;;
2957             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2958             -Wl,*)              echo $flag                      ;;
2959             -f*|-W*)                                            ;;
2960             *)                  echo $flag                      ;;
2961         esac
2962    done
2963 }
2964
2965 cparser_flags(){
2966     for flag; do
2967         case $flag in
2968             -Wno-switch)             echo -Wno-switch-enum ;;
2969             -Wno-format-zero-length) ;;
2970             -Wdisabled-optimization) ;;
2971             -Wno-pointer-sign)       echo -Wno-other ;;
2972             *)                       echo $flag ;;
2973         esac
2974     done
2975 }
2976
2977 msvc_common_flags(){
2978     for flag; do
2979         case $flag in
2980             # In addition to specifying certain flags under the compiler
2981             # specific filters, they must be specified here as well or else the
2982             # generic catch all at the bottom will print the original flag.
2983             -Wall)                ;;
2984             -std=c99)             ;;
2985             # Common flags
2986             -fomit-frame-pointer) ;;
2987             -g)                   echo -Z7 ;;
2988             -fno-math-errno)      ;;
2989             -fno-common)          ;;
2990             -fno-signed-zeros)    ;;
2991             -fPIC)                ;;
2992             -mthumb)              ;;
2993             -march=*)             ;;
2994             -lz)                  echo zlib.lib ;;
2995             -lavifil32)           echo vfw32.lib ;;
2996             -lavicap32)           echo vfw32.lib user32.lib ;;
2997             -lx264)               echo libx264.lib ;;
2998             -l*)                  echo ${flag#-l}.lib ;;
2999             -L*)                  echo -libpath:${flag#-L} ;;
3000             *)                    echo $flag ;;
3001         esac
3002     done
3003 }
3004
3005 msvc_flags(){
3006     msvc_common_flags "$@"
3007     for flag; do
3008         case $flag in
3009             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3010                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3011                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3012                                        -wd4273 -wd4554 -wd4701 ;;
3013         esac
3014     done
3015 }
3016
3017 icl_flags(){
3018     msvc_common_flags "$@"
3019     for flag; do
3020         case $flag in
3021             # Despite what Intel's documentation says -Wall, which is supported
3022             # on Windows, does enable remarks so disable them here.
3023             -Wall)                echo $flag -Qdiag-disable:remark ;;
3024             -std=c99)             echo -Qstd=c99 ;;
3025         esac
3026     done
3027 }
3028
3029 pgi_flags(){
3030     for flag; do
3031         case $flag in
3032             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3033             -fomit-frame-pointer) echo -Mnoframe ;;
3034             -g)                   echo -gopt ;;
3035             *)                    echo $flag ;;
3036         esac
3037     done
3038 }
3039
3040 suncc_flags(){
3041     for flag; do
3042         case $flag in
3043             -march=*|-mcpu=*)
3044                 case "${flag#*=}" in
3045                     native)                   echo -xtarget=native       ;;
3046                     v9|niagara)               echo -xarch=sparc          ;;
3047                     ultrasparc)               echo -xarch=sparcvis       ;;
3048                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3049                     i586|pentium)             echo -xchip=pentium        ;;
3050                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3051                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3052                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3053                     pentium4*)          echo -xtarget=pentium4           ;;
3054                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3055                     *-sse3)             echo -xarch=sse3                 ;;
3056                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3057                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3058                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3059                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3060                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3061                     k8|opteron|athlon64|athlon-fx)
3062                                                echo -xarch=sse2a         ;;
3063                     athlon*)                   echo -xarch=pentium_proa  ;;
3064                 esac
3065                 ;;
3066             -std=c99)             echo -xc99              ;;
3067             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3068             -fPIC)                echo -KPIC -xcode=pic32 ;;
3069             -W*,*)                echo $flag              ;;
3070             -f*-*|-W*|-mimpure-text)                      ;;
3071             -shared)              echo -G                 ;;
3072             *)                    echo $flag              ;;
3073         esac
3074     done
3075 }
3076
3077 tms470_flags(){
3078     for flag; do
3079         case $flag in
3080             -march=*|-mcpu=*)
3081                 case "${flag#*=}" in
3082                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3083                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3084                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3085                     armv6*|arm11*)          echo -mv=6   ;;
3086                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3087                                             echo -mv=5e  ;;
3088                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3089                 esac
3090                 ;;
3091             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3092             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3093             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3094             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3095             -msoft-float)   echo --float_support=vfplib       ;;
3096             -O[0-3]|-mf=*)  echo $flag                        ;;
3097             -g)             echo -g -mn                       ;;
3098             -pds=*)         echo $flag                        ;;
3099             -D*|-I*)        echo $flag                        ;;
3100             --gcc|--abi=*)  echo $flag                        ;;
3101             -me)            echo $flag                        ;;
3102         esac
3103     done
3104 }
3105
3106 probe_cc(){
3107     pfx=$1
3108     _cc=$2
3109
3110     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3111     unset _ld_o _ldflags _ld_lib _ld_path
3112     unset _depflags _DEPCMD _DEPFLAGS
3113     _flags_filter=echo
3114
3115     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3116         _type=llvm_gcc
3117         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3118         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3119         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3120         _cflags_speed='-O3'
3121         _cflags_size='-Os'
3122     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3123         _type=gcc
3124         gcc_version=$($_cc --version | head -n1)
3125         gcc_basever=$($_cc -dumpversion)
3126         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3127         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3128         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3129         if ! $_cc -dumpversion | grep -q '^2\.'; then
3130             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3131         fi
3132         _cflags_speed='-O3'
3133         _cflags_size='-Os'
3134     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3135         _type=icc
3136         _ident=$($_cc --version | head -n1)
3137         _depflags='-MMD'
3138         _cflags_speed='-O3'
3139         _cflags_size='-Os'
3140         _cflags_noopt='-O1'
3141     elif $_cc -v 2>&1 | grep -q xlc; then
3142         _type=xlc
3143         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3144         _cflags_speed='-O5'
3145         _cflags_size='-O5 -qcompact'
3146     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3147         _type=ccc
3148         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3149         _DEPFLAGS='-M'
3150         _cflags_speed='-fast'
3151         _cflags_size='-O1'
3152         _flags_filter=ccc_flags
3153     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3154         test -d "$sysroot" || die "No valid sysroot specified."
3155         _type=armcc
3156         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3157         armcc_conf="$PWD/armcc.conf"
3158         $_cc --arm_linux_configure                 \
3159              --arm_linux_config_file="$armcc_conf" \
3160              --configure_sysroot="$sysroot"        \
3161              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3162              die "Error creating armcc configuration file."
3163         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3164         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3165         as_default="${cross_prefix}gcc"
3166         _depflags='-MMD'
3167         _cflags_speed='-O3'
3168         _cflags_size='-Os'
3169     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3170         _type=tms470
3171         _ident=$($_cc -version | head -n1 | tr -s ' ')
3172         _flags='--gcc --abi=eabi -me'
3173         _cc_e='-ppl -fe=$@'
3174         _cc_o='-fe=$@'
3175         _depflags='-ppa -ppd=$(@:.o=.d)'
3176         _cflags_speed='-O3 -mf=5'
3177         _cflags_size='-O3 -mf=2'
3178         _flags_filter=tms470_flags
3179     elif $_cc -v 2>&1 | grep -q clang; then
3180         _type=clang
3181         _ident=$($_cc --version 2>/dev/null | head -n1)
3182         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3183         _cflags_speed='-O3'
3184         _cflags_size='-Os'
3185     elif $_cc -V 2>&1 | grep -q Sun; then
3186         _type=suncc
3187         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3188         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3189         _DEPFLAGS='-xM1 -xc99'
3190         _ldflags='-std=c99'
3191         _cflags_speed='-O5'
3192         _cflags_size='-O5 -xspace'
3193         _flags_filter=suncc_flags
3194     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3195         _type=pathscale
3196         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3197         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3198         _cflags_speed='-O2'
3199         _cflags_size='-Os'
3200         _flags_filter='filter_out -Wdisabled-optimization'
3201     elif $_cc -v 2>&1 | grep -q Open64; then
3202         _type=open64
3203         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3204         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3205         _cflags_speed='-O2'
3206         _cflags_size='-Os'
3207         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3208     elif $_cc -V 2>&1 | grep -q Portland; then
3209         _type=pgi
3210         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3211         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3212         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3213         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3214         _cflags_noopt="-O1"
3215         _flags_filter=pgi_flags
3216     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3217         _type=armasm
3218         _ident=$($_cc | head -n1)
3219         # 4509: "This form of conditional instruction is deprecated"
3220         _flags="-nologo -ignore 4509"
3221         _flags_filter=armasm_flags
3222     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3223         _type=msvc
3224         _ident=$($_cc 2>&1 | head -n1)
3225         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3226         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3227         _cflags_speed="-O2"
3228         _cflags_size="-O1"
3229         if $_cc -nologo- 2>&1 | grep -q Linker; then
3230             _ld_o='-out:$@'
3231         else
3232             _ld_o='-Fe$@'
3233         fi
3234         _cc_o='-Fo$@'
3235         _cc_e='-P -Fi$@'
3236         _flags_filter=msvc_flags
3237         _ld_lib='lib%.a'
3238         _ld_path='-libpath:'
3239         _flags='-nologo'
3240         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3241     elif $_cc 2>&1 | grep -q Intel; then
3242         _type=icl
3243         _ident=$($_cc 2>&1 | head -n1)
3244         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3245         # Not only is O3 broken on 13.x+ but it is slower on all previous
3246         # versions (tested) as well.
3247         _cflags_speed="-O2"
3248         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3249         if $_cc 2>&1 | grep -q Linker; then
3250             _ld_o='-out:$@'
3251         else
3252             _ld_o='-Fe$@'
3253         fi
3254         _cc_o='-Fo$@'
3255         _cc_e='-P'
3256         _flags_filter=icl_flags
3257         _ld_lib='lib%.a'
3258         _ld_path='-libpath:'
3259         # -Qdiag-error to make icl error when seeing certain unknown arguments
3260         _flags='-nologo -Qdiag-error:4044,10157'
3261         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3262         # with MSVC which enables it by default.
3263         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3264     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3265         _type=cparser
3266         _ident=$($_cc --version | head -n1)
3267         _depflags='-MMD'
3268         _cflags_speed='-O4'
3269         _cflags_size='-O2'
3270         _flags_filter=cparser_flags
3271     fi
3272
3273     eval ${pfx}_type=\$_type
3274     eval ${pfx}_ident=\$_ident
3275 }
3276
3277 set_ccvars(){
3278     eval ${1}_C=\${_cc_c-\${${1}_C}}
3279     eval ${1}_E=\${_cc_e-\${${1}_E}}
3280     eval ${1}_O=\${_cc_o-\${${1}_O}}
3281
3282     if [ -n "$_depflags" ]; then
3283         eval ${1}_DEPFLAGS=\$_depflags
3284     else
3285         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3286         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3287         eval DEP${1}FLAGS=\$_flags
3288     fi
3289 }
3290
3291 probe_cc cc "$cc"
3292 cflags_filter=$_flags_filter
3293 cflags_speed=$_cflags_speed
3294 cflags_size=$_cflags_size
3295 cflags_noopt=$_cflags_noopt
3296 add_cflags $_flags $_cflags
3297 cc_ldflags=$_ldflags
3298 set_ccvars CC
3299
3300 probe_cc hostcc "$host_cc"
3301 host_cflags_filter=$_flags_filter
3302 add_host_cflags  $_flags $_cflags
3303 set_ccvars HOSTCC
3304
3305 test -n "$cc_type" && enable $cc_type ||
3306     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3307
3308 : ${as_default:=$cc}
3309 : ${objcc_default:=$cc}
3310 : ${dep_cc_default:=$cc}
3311 : ${ld_default:=$cc}
3312 : ${host_ld_default:=$host_cc}
3313 set_default ar as objcc dep_cc ld host_ld
3314
3315 probe_cc as "$as"
3316 asflags_filter=$_flags_filter
3317 add_asflags $_flags $_cflags
3318 set_ccvars AS
3319
3320 probe_cc objcc "$objcc"
3321 objcflags_filter=$_flags_filter
3322 add_objcflags $_flags $_cflags
3323 set_ccvars OBJC
3324
3325 probe_cc ld "$ld"
3326 ldflags_filter=$_flags_filter
3327 add_ldflags $_flags $_ldflags
3328 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3329 LD_O=${_ld_o-$LD_O}
3330 LD_LIB=${_ld_lib-$LD_LIB}
3331 LD_PATH=${_ld_path-$LD_PATH}
3332
3333 probe_cc hostld "$host_ld"
3334 host_ldflags_filter=$_flags_filter
3335 add_host_ldflags $_flags $_ldflags
3336 HOSTLD_O=${_ld_o-$HOSTLD_O}
3337
3338 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3339     probe_cc depcc "$dep_cc"
3340     CCDEP=${_DEPCMD:-$DEPCMD}
3341     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3342     DEPCCFLAGS=$_flags
3343 fi
3344
3345 if $ar 2>&1 | grep -q Microsoft; then
3346     arflags="-nologo"
3347     ar_o='-out:$@'
3348 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3349     arflags="rq"
3350     ar_o='$@'
3351 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3352     arflags='-Xany -r -c'
3353     ar_o='$@'
3354 else
3355     arflags="rc"
3356     ar_o='$@'
3357 fi
3358
3359 add_cflags $extra_cflags
3360 add_objcflags $extra_objcflags
3361 add_asflags $extra_cflags
3362
3363 if test -n "$sysroot"; then
3364     case "$cc_type" in
3365         gcc|llvm_gcc|clang)
3366             add_cppflags --sysroot="$sysroot"
3367             add_ldflags --sysroot="$sysroot"
3368         ;;
3369         tms470)
3370             add_cppflags -I"$sysinclude"
3371             add_ldflags  --sysroot="$sysroot"
3372         ;;
3373     esac
3374 fi
3375
3376 if test "$cpu" = host; then
3377     enabled cross_compile &&
3378         die "--cpu=host makes no sense when cross-compiling."
3379
3380     case "$cc_type" in
3381         gcc|llvm_gcc)
3382             check_native(){
3383                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3384                 sed -n "/cc1.*$1=/{
3385                             s/.*$1=\\([^ ]*\\).*/\\1/
3386                             p
3387                             q
3388                         }" $TMPE
3389             }
3390             cpu=$(check_native -march || check_native -mcpu)
3391         ;;
3392     esac
3393
3394     test "${cpu:-host}" = host &&
3395         die "--cpu=host not supported with compiler $cc"
3396 fi
3397
3398 # Deal with common $arch aliases
3399 case "$arch" in
3400     aarch64|arm64)
3401         arch="aarch64"
3402     ;;
3403     arm*)
3404         arch="arm"
3405     ;;
3406     mips*|IP*)
3407         case "$arch" in
3408         *el)
3409             add_cppflags -EL
3410             add_ldflags -EL
3411         ;;
3412         *eb)
3413             add_cppflags -EB
3414             add_ldflags -EB
3415         ;;
3416         esac
3417         arch="mips"
3418     ;;
3419     parisc*|hppa*)
3420         arch="parisc"
3421     ;;
3422     "Power Macintosh"|ppc*|powerpc*)
3423         arch="ppc"
3424     ;;
3425     s390|s390x)
3426         arch="s390"
3427     ;;
3428     sh4|sh)
3429         arch="sh4"
3430     ;;
3431     sun4u|sparc*)
3432         arch="sparc"
3433     ;;
3434     tilegx|tile-gx)
3435         arch="tilegx"
3436     ;;
3437     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3438         arch="x86"
3439     ;;
3440 esac
3441
3442 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3443 enable $arch
3444
3445 # Add processor-specific flags
3446 if enabled aarch64; then
3447
3448     case $cpu in
3449         armv*)
3450             cpuflags="-march=$cpu"
3451         ;;
3452         *)
3453             cpuflags="-mcpu=$cpu"
3454         ;;
3455     esac
3456
3457 elif enabled alpha; then
3458
3459     cpuflags="-mcpu=$cpu"
3460
3461 elif enabled arm; then
3462
3463     check_arm_arch() {
3464         check_cpp_condition stddef.h \
3465             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3466             $cpuflags
3467     }
3468
3469     probe_arm_arch() {
3470         if   check_arm_arch 4;        then echo armv4
3471         elif check_arm_arch 4T;       then echo armv4t
3472         elif check_arm_arch 5;        then echo armv5
3473         elif check_arm_arch 5E;       then echo armv5e
3474         elif check_arm_arch 5T;       then echo armv5t
3475         elif check_arm_arch 5TE;      then echo armv5te
3476         elif check_arm_arch 5TEJ;     then echo armv5te
3477         elif check_arm_arch 6;        then echo armv6
3478         elif check_arm_arch 6J;       then echo armv6j
3479         elif check_arm_arch 6K;       then echo armv6k
3480         elif check_arm_arch 6Z;       then echo armv6z
3481         elif check_arm_arch 6ZK;      then echo armv6zk
3482         elif check_arm_arch 6T2;      then echo armv6t2
3483         elif check_arm_arch 7;        then echo armv7
3484         elif check_arm_arch 7A  7_A;  then echo armv7-a
3485         elif check_arm_arch 7S;       then echo armv7-a
3486         elif check_arm_arch 7R  7_R;  then echo armv7-r
3487         elif check_arm_arch 7M  7_M;  then echo armv7-m
3488         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3489         elif check_arm_arch 8A  8_A;  then echo armv8-a
3490         fi
3491     }
3492
3493     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3494
3495     case $cpu in
3496         armv*)
3497             cpuflags="-march=$cpu"
3498             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3499         ;;
3500         *)
3501             cpuflags="-mcpu=$cpu"
3502             case $cpu in
3503                 cortex-a*)                               subarch=armv7a  ;;
3504                 cortex-r*)                               subarch=armv7r  ;;
3505                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3506                 arm11*)                                  subarch=armv6   ;;
3507                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3508                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3509                 *)                             subarch=$(probe_arm_arch) ;;
3510             esac
3511         ;;
3512     esac
3513
3514     case "$subarch" in
3515         armv5t*)    enable fast_clz                ;;
3516         armv[6-8]*) enable fast_clz fast_unaligned ;;
3517     esac
3518
3519 elif enabled avr32; then
3520
3521     case $cpu in
3522         ap7[02]0[0-2])
3523             subarch="avr32_ap"
3524             cpuflags="-mpart=$cpu"
3525         ;;
3526         ap)
3527             subarch="avr32_ap"
3528             cpuflags="-march=$cpu"
3529         ;;
3530         uc3[ab]*)
3531             subarch="avr32_uc"
3532             cpuflags="-mcpu=$cpu"
3533         ;;
3534         uc)
3535             subarch="avr32_uc"
3536             cpuflags="-march=$cpu"
3537         ;;
3538     esac
3539
3540 elif enabled bfin; then
3541
3542     cpuflags="-mcpu=$cpu"
3543
3544 elif enabled mips; then
3545
3546     cpuflags="-march=$cpu"
3547
3548 elif enabled ppc; then
3549
3550     disable ldbrx
3551
3552     case $(tolower $cpu) in
3553         601|ppc601|powerpc601)
3554             cpuflags="-mcpu=601"
3555             disable altivec
3556         ;;
3557         603*|ppc603*|powerpc603*)
3558             cpuflags="-mcpu=603"
3559             disable altivec
3560         ;;
3561         604*|ppc604*|powerpc604*)
3562             cpuflags="-mcpu=604"
3563             disable altivec
3564         ;;
3565         g3|75*|ppc75*|powerpc75*)
3566             cpuflags="-mcpu=750"
3567             disable altivec
3568         ;;
3569         g4|745*|ppc745*|powerpc745*)
3570             cpuflags="-mcpu=7450"
3571             disable vsx
3572         ;;
3573         74*|ppc74*|powerpc74*)
3574             cpuflags="-mcpu=7400"
3575             disable vsx
3576         ;;
3577         g5|970|ppc970|powerpc970)
3578             cpuflags="-mcpu=970"
3579             disable vsx
3580         ;;
3581         power[3-6]*)
3582             cpuflags="-mcpu=$cpu"
3583             disable vsx
3584         ;;
3585         power[7-8]*)
3586             cpuflags="-mcpu=$cpu"
3587             enable ldbrx
3588         ;;
3589         cell)
3590             cpuflags="-mcpu=cell"
3591             enable ldbrx
3592             disable vsx
3593         ;;
3594         e500mc)
3595             cpuflags="-mcpu=e500mc"
3596             disable altivec
3597         ;;
3598         e500v2)
3599             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3600             disable altivec
3601             disable dcbzl
3602         ;;
3603         e500)
3604             cpuflags="-mcpu=8540 -mhard-float"
3605             disable altivec
3606             disable dcbzl
3607         ;;
3608     esac
3609
3610 elif enabled sparc; then
3611
3612     case $cpu in
3613         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3614             cpuflags="-mcpu=$cpu"
3615         ;;
3616         ultrasparc*|niagara[234])
3617             cpuflags="-mcpu=$cpu"
3618         ;;
3619     esac
3620
3621 elif enabled x86; then
3622
3623     case $cpu in
3624         i[345]86|pentium)
3625             cpuflags="-march=$cpu"
3626             disable i686
3627             disable mmx
3628         ;;
3629         # targets that do NOT support nopl and conditional mov (cmov)
3630         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3631             cpuflags="-march=$cpu"
3632             disable i686
3633         ;;
3634         # targets that do support nopl and conditional mov (cmov)
3635         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3636             cpuflags="-march=$cpu"
3637             enable i686
3638             enable fast_cmov
3639         ;;
3640         # targets that do support conditional mov but on which it's slow
3641         pentium4|pentium4m|prescott|nocona)
3642             cpuflags="-march=$cpu"
3643             enable i686
3644             disable fast_cmov
3645         ;;
3646     esac
3647
3648 fi
3649
3650 if [ "$cpu" != generic ]; then
3651     add_cflags  $cpuflags
3652     add_asflags $cpuflags
3653     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3654 fi
3655
3656 # compiler sanity check
3657 check_exec <<EOF
3658 int main(void){ return 0; }
3659 EOF
3660 if test "$?" != 0; then
3661     echo "$cc is unable to create an executable file."
3662     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3663         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3664         echo "Only do this if you know what cross compiling means."
3665     fi
3666     die "C compiler test failed."
3667 fi
3668
3669 add_cppflags -D_ISOC99_SOURCE
3670 check_cflags -std=c99
3671 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3672 #include <stdlib.h>
3673 EOF
3674 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3675 #include <stdlib.h>
3676 EOF
3677
3678 add_host_cppflags -D_ISOC99_SOURCE
3679 check_host_cflags -std=c99
3680 check_host_cflags -Wall
3681 check_host_cflags -O3
3682
3683 check_64bit(){
3684     arch32=$1
3685     arch64=$2
3686     expr=$3
3687     check_code cc "" "int test[2*($expr) - 1]" &&
3688         subarch=$arch64 || subarch=$arch32
3689 }
3690
3691 case "$arch" in
3692     aarch64|alpha|ia64)
3693         spic=$shared
3694     ;;
3695     mips)
3696         check_64bit mips mips64 '_MIPS_SIM > 1'
3697         spic=$shared
3698     ;;
3699     parisc)
3700         check_64bit parisc parisc64 'sizeof(void *) > 4'
3701         spic=$shared
3702     ;;
3703     ppc)
3704         check_64bit ppc ppc64 'sizeof(void *) > 4'
3705         spic=$shared
3706     ;;
3707     s390)
3708         check_64bit s390 s390x 'sizeof(void *) > 4'
3709         spic=$shared
3710     ;;
3711     sparc)
3712         check_64bit sparc sparc64 'sizeof(void *) > 4'
3713         spic=$shared
3714     ;;
3715     x86)
3716         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3717         if test "$subarch" = "x86_64"; then
3718             spic=$shared
3719         fi
3720     ;;
3721 esac
3722
3723 enable $subarch
3724 enabled spic && enable_weak pic
3725
3726 # OS specific
3727 case $target_os in
3728     aix)
3729         SHFLAGS=-shared
3730         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3731         enabled shared && add_ldflags -Wl,-brtl
3732         ;;
3733     android)
3734         disable symver
3735         enable section_data_rel_ro
3736         SLIB_INSTALL_NAME='$(SLIBNAME)'
3737         SLIB_INSTALL_LINKS=
3738         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3739         ;;
3740     haiku)
3741         prefix_default="/boot/common"
3742         network_extralibs="-lnetwork"
3743         host_libs=
3744         ;;
3745     sunos)
3746         SHFLAGS='-shared -Wl,-h,$$(@F)'
3747         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3748         network_extralibs="-lsocket -lnsl"
3749         # When using suncc to build, the Solaris linker will mark
3750         # an executable with each instruction set encountered by
3751         # the Solaris assembler.  As our libraries contain their own
3752         # guards for processor-specific code, instead suppress
3753         # generation of the HWCAPS ELF section on Solaris x86 only.
3754         enabled_all suncc x86 &&
3755             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3756             add_ldflags -Wl,-M,mapfile
3757         nm_default='nm -P -g'
3758         version_script='-M'
3759         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3760         ;;
3761     netbsd)
3762         disable symver
3763         oss_indev_extralibs="-lossaudio"
3764         oss_outdev_extralibs="-lossaudio"
3765         ;;
3766     openbsd|bitrig)
3767         disable symver
3768         SHFLAGS='-shared'
3769         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3770         SLIB_INSTALL_LINKS=
3771         oss_indev_extralibs="-lossaudio"
3772         oss_outdev_extralibs="-lossaudio"
3773         ;;
3774     dragonfly)
3775         disable symver
3776         ;;
3777     freebsd)
3778         ;;
3779     bsd/os)
3780         add_extralibs -lpoll -lgnugetopt
3781         ;;
3782     darwin)
3783         enabled ppc && add_asflags -force_cpusubtype_ALL
3784         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3785         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3786         add_ldflags -Wl,-dynamic,-search_paths_first
3787         SLIBSUF=".dylib"
3788         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3789         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3790         objformat="macho"
3791         enabled x86_64 && objformat="macho64"
3792         enabled_any pic shared ||
3793             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3794         check_header dispatch/dispatch.h &&
3795             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3796         ;;
3797     msys*)
3798         die "Native MSYS builds are discouraged, please use the MINGW environment."
3799         ;;
3800     mingw32*|mingw64*)
3801         if test $target_os = "mingw32ce"; then
3802             disable network
3803         else
3804             target_os=mingw32
3805         fi
3806         LIBTARGET=i386
3807         if enabled x86_64; then
3808             LIBTARGET="i386:x86-64"
3809         elif enabled arm; then
3810             LIBTARGET=arm-wince
3811         fi
3812         check_ldflags -Wl,--nxcompat
3813         check_ldflags -Wl,--dynamicbase
3814         shlibdir_default="$bindir_default"
3815         SLIBPREF=""
3816         SLIBSUF=".dll"
3817         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3818         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3819         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3820         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3821         SLIB_INSTALL_LINKS=
3822         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3823         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3824         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3825         objformat="win32"
3826         dlltool="${cross_prefix}dlltool"
3827         ranlib=:
3828         enable dos_paths
3829         ;;
3830     win32|win64)
3831         disable symver
3832         if enabled shared; then
3833             # Link to the import library instead of the normal static library
3834             # for shared libs.
3835             LD_LIB='%.lib'
3836             # Cannot build both shared and static libs with MSVC or icl.
3837             disable static
3838         fi
3839         shlibdir_default="$bindir_default"
3840         SLIBPREF=""
3841         SLIBSUF=".dll"
3842         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3843         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3844         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3845         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3846         SLIB_INSTALL_LINKS=
3847         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3848         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3849         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3850         objformat="win32"
3851         ranlib=:
3852         enable dos_paths
3853         ;;
3854     cygwin*)
3855         target_os=cygwin
3856         shlibdir_default="$bindir_default"
3857         SLIBPREF="cyg"
3858         SLIBSUF=".dll"
3859         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3860         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3861         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3862         SLIB_INSTALL_LINKS=
3863         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3864         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3865         objformat="win32"
3866         enable dos_paths
3867         ;;
3868     *-dos|freedos|opendos)
3869         network_extralibs="-lsocket"
3870         objformat="coff"
3871         enable dos_paths
3872         add_cppflags -U__STRICT_ANSI__
3873         ;;
3874     linux)
3875         enable dv1394
3876         enable section_data_rel_ro
3877         ;;
3878     irix*)
3879         target_os=irix
3880         ranlib="echo ignoring ranlib"
3881         ;;
3882     os/2*)
3883         ln_s="cp -f"
3884         objformat="aout"
3885         add_cppflags -D_GNU_SOURCE
3886         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3887         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3888         LIBSUF="_s.a"
3889         SLIBPREF=""
3890         SLIBSUF=".dll"
3891         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3892         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3893         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3894             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3895             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3896             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3897             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3898         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3899             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3900         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3901         enable dos_paths
3902         ;;
3903     gnu/kfreebsd)
3904         add_cppflags -D_BSD_SOURCE
3905         ;;
3906     gnu)
3907         ;;
3908     qnx)
3909         add_cppflags -D_QNX_SOURCE
3910         network_extralibs="-lsocket"
3911         ;;
3912     symbian)
3913         SLIBSUF=".dll"
3914         enable dos_paths
3915         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3916         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3917         add_ldflags -Wl,--target1-abs,--no-undefined \
3918                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3919                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3920         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3921                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3922                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3923         ;;
3924     osf1)
3925         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3926         ;;
3927     minix)
3928         ;;
3929     plan9)
3930         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3931                      -D_REENTRANT_SOURCE        \
3932                      -D_RESEARCH_SOURCE         \
3933                      -DFD_SETSIZE=96            \
3934                      -DHAVE_SOCK_OPTS
3935         add_compat strtod.o strtod=avpriv_strtod
3936         network_extralibs='-lbsd'
3937         exeobjs=compat/plan9/main.o
3938         cp_f='cp'
3939         ;;
3940     none)
3941         ;;
3942     *)
3943         die "Unknown OS '$target_os'."
3944         ;;
3945 esac
3946
3947 # determine libc flavour
3948
3949 probe_libc(){
3950     pfx=$1
3951     pfx_no_=${pfx%_}
3952     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3953     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3954         eval ${pfx}libc_type=uclibc
3955         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3956     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3957         eval ${pfx}libc_type=glibc
3958         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3959     # MinGW headers can be installed on Cygwin, so check for newlib first.
3960     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3961         eval ${pfx}libc_type=newlib
3962         add_${pfx}cppflags -U__STRICT_ANSI__
3963     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3964     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3965         eval ${pfx}libc_type=mingw64
3966         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3967         eval test \$${pfx_no_}cc_type = "gcc" &&
3968             add_${pfx}cppflags -D__printf__=__gnu_printf__
3969     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3970          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3971         eval ${pfx}libc_type=mingw32
3972         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3973             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3974             die "ERROR: MinGW32 runtime version must be >= 3.15."
3975         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3976         eval test \$${pfx_no_}cc_type = "gcc" &&
3977             add_${pfx}cppflags -D__printf__=__gnu_printf__
3978     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3979         eval ${pfx}libc_type=msvcrt
3980         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3981             if [ "$pfx" = host_ ]; then
3982                 add_host_cppflags -Dsnprintf=_snprintf
3983             else
3984                 add_compat strtod.o strtod=avpriv_strtod
3985                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3986                                              _snprintf=avpriv_snprintf  \
3987                                              vsnprintf=avpriv_vsnprintf
3988             fi
3989         fi
3990         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3991         # 0x601 by default unless something else is set by the user.
3992         # This can easily lead to us detecting functions only present
3993         # in such new versions and producing binaries requiring windows 7.0.
3994         # Therefore explicitly set the default to XP unless the user has
3995         # set something else on the command line.
3996         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3997         # family. For these cases, configure is free to use any functions
3998         # found in the SDK headers by default. (Alternatively, we could force
3999         # _WIN32_WINNT to 0x0602 in that case.)
4000         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4001             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4002 #ifdef WINAPI_FAMILY
4003 #include <winapifamily.h>
4004 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4005 #error not desktop
4006 #endif
4007 #endif
4008 EOF
4009     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4010         eval ${pfx}libc_type=klibc
4011     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4012         eval ${pfx}libc_type=bionic
4013     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4014         eval ${pfx}libc_type=solaris
4015         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4016     else
4017         eval ${pfx}libc_type=default
4018         add_${pfx}cppflags -D_DEFAULT_SOURCE
4019     fi
4020 }
4021
4022 probe_libc
4023 test -n "$libc_type" && enable libc_$libc_type
4024 probe_libc host_
4025 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4026
4027 case $libc_type in
4028     bionic)
4029         add_compat strtod.o strtod=avpriv_strtod
4030         ;;
4031 esac
4032
4033 # hacks for compiler/libc/os combinations
4034
4035 if enabled_all tms470 libc_glibc; then
4036     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4037     add_cppflags -D__USER_LABEL_PREFIX__=
4038     add_cppflags -D__builtin_memset=memset
4039     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4040     add_cflags   -pds=48    # incompatible redefinition of macro
4041 fi
4042
4043 if enabled_all ccc libc_glibc; then
4044     add_ldflags -Wl,-z,now  # calls to libots crash without this
4045 fi
4046
4047 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4048     add_cppflags '-I\$(SRC_PATH)/compat/float'
4049
4050 esc(){
4051     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4052 }
4053
4054 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4055
4056 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4057
4058 set_default $PATHS_LIST
4059 set_default nm
4060
4061 # we need to build at least one lib type
4062 if ! enabled_any static shared; then
4063     cat <<EOF
4064 At least one library type must be built.
4065 Specify --enable-static to build the static libraries or --enable-shared to