4450ce418d112a3262ed4964ec3b215dac1f5c3e
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --enable-pic             build position-independent code
290   --enable-thumb           compile for Thumb instruction set
291   --enable-lto             use link-time optimization
292   --env="ENV=override"     override the environment variables
293
294 Advanced options (experts only):
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --custom-allocator=NAME  use a supported custom allocator
297   --disable-symver         disable symbol versioning
298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
299   --disable-safe-bitstream-reader
300                            disable buffer boundary checking in bitreaders
301                            (faster, but may crash)
302   --enable-sram            allow use of on-chip SRAM
303
304 Optimization options (experts only):
305   --disable-asm            disable all assembly optimizations
306   --disable-altivec        disable AltiVec optimizations
307   --disable-vsx            disable VSX optimizations
308   --disable-power8         disable POWER8 optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-xop            disable XOP optimizations
321   --disable-fma3           disable FMA3 optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-inline-asm     disable use of inline assembly
330   --disable-x86asm         disable use of standalone x86 assembly
331
332 Developer options (useful when working on Libav itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --samples=PATH           location of test samples for FATE, if not set use
338                            \$LIBAV_SAMPLES at make invocation time.
339   --enable-neon-clobber-test check NEON registers for clobbering (should be
340                            used only for debugging purposes)
341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
342                            should be used only for debugging purposes)
343   --enable-random          randomly enable/disable components
344   --disable-random
345   --enable-random=LIST     randomly enable/disable specific components or
346   --disable-random=LIST    component groups. LIST is a comma-separated list
347                            of NAME[:PROB] entries where NAME is a component
348                            (group) and PROB the probability associated with
349                            NAME (default 0.5).
350   --random-seed=VALUE      seed value for --enable/disable-random
351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
352                            (only applies to --disable-optimizations builds)
353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
354                            in the name) of tests whose result is ignored
355
356 NOTE: Object files are built at the place where configure is launched.
357 EOF
358   exit 0
359 }
360
361 quotes='""'
362
363 log(){
364     echo "$@" >> $logfile
365 }
366
367 log_file(){
368     log BEGIN $1
369     i=1
370     while read line; do
371         printf '%5s   %s\n' "${i}" "${line}"
372         i=$(($i+1))
373     done < $1 >> $logfile
374     log END $1
375 }
376
377 echolog(){
378     log "$@"
379     echo "$@"
380 }
381
382 warn(){
383     log "WARNING: $*"
384     WARNINGS="${WARNINGS}WARNING: $*\n"
385 }
386
387 die(){
388     echolog "$@"
389     cat <<EOF
390
391 If you think configure made a mistake, make sure you are using the latest
392 version from Git.  If the latest version fails, report the problem to the
393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
394 EOF
395     if disabled logging; then
396         cat <<EOF
397 Rerun configure with logging enabled (do not use --disable-logging), and
398 include the log this produces with your report.
399 EOF
400     else
401         cat <<EOF
402 Include the log file "$logfile" produced by configure as this will help
403 solving the problem.
404 EOF
405     fi
406     exit 1
407 }
408
409 # Avoid locale weirdness, besides we really just want to translate ASCII.
410 toupper(){
411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
412 }
413
414 tolower(){
415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
416 }
417
418 c_escape(){
419     echo "$*" | sed 's/["\\]/\\\0/g'
420 }
421
422 sh_quote(){
423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
425     echo "$v"
426 }
427
428 cleanws(){
429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
430 }
431
432 filter(){
433     pat=$1
434     shift
435     for v; do
436         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
437     done
438 }
439
440 filter_out(){
441     pat=$1
442     shift
443     for v; do
444         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
445     done
446 }
447
448 map(){
449     m=$1
450     shift
451     for v; do eval $m; done
452 }
453
454 add_suffix(){
455     suffix=$1
456     shift
457     for v; do echo ${v}${suffix}; done
458 }
459
460 set_all(){
461     value=$1
462     shift
463     for var in $*; do
464         eval $var=$value
465     done
466 }
467
468 set_weak(){
469     value=$1
470     shift
471     for var; do
472         eval : \${$var:=$value}
473     done
474 }
475
476 sanitize_var_name(){
477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
478 }
479
480 set_sanitized(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_sanitized(){
487     eval echo \$$(sanitize_var_name "$1")
488 }
489
490 pushvar(){
491     for pvar in $*; do
492         eval level=\${${pvar}_level:=0}
493         eval ${pvar}_${level}="\$$pvar"
494         eval ${pvar}_level=$(($level+1))
495     done
496 }
497
498 popvar(){
499     for pvar in $*; do
500         eval level=\${${pvar}_level:-0}
501         test $level = 0 && continue
502         eval level=$(($level-1))
503         eval $pvar="\${${pvar}_${level}}"
504         eval ${pvar}_level=$level
505         eval unset ${pvar}_${level}
506     done
507 }
508
509 enable(){
510     set_all yes $*
511 }
512
513 disable(){
514     set_all no $*
515 }
516
517 enable_weak(){
518     set_weak yes $*
519 }
520
521 disable_weak(){
522     set_weak no $*
523 }
524
525 enable_sanitized(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_sanitized(){
532     for var; do
533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 do_enable_deep(){
538     for var; do
539         enabled $var && continue
540         eval sel="\$${var}_select"
541         eval sgs="\$${var}_suggest"
542         pushvar var sgs
543         enable_deep $sel
544         popvar sgs
545         enable_deep_weak $sgs
546         popvar var
547     done
548 }
549
550 enable_deep(){
551     do_enable_deep $*
552     enable $*
553 }
554
555 enable_deep_weak(){
556     for var; do
557         disabled $var && continue
558         pushvar var
559         do_enable_deep $var
560         popvar var
561         enable_weak $var
562     done
563 }
564
565 enabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xyes"
568 }
569
570 disabled(){
571     test "${1#!}" = "$1" && op== || op=!=
572     eval test "x\$${1#!}" $op "xno"
573 }
574
575 enabled_all(){
576     for opt; do
577         enabled $opt || return 1
578     done
579 }
580
581 disabled_all(){
582     for opt; do
583         disabled $opt || return 1
584     done
585 }
586
587 enabled_any(){
588     for opt; do
589         enabled $opt && return 0
590     done
591 }
592
593 disabled_any(){
594     for opt; do
595         disabled $opt && return 0
596     done
597     return 1
598 }
599
600 set_default(){
601     for opt; do
602         eval : \${$opt:=\$${opt}_default}
603     done
604 }
605
606 is_in(){
607     value=$1
608     shift
609     for var in $*; do
610         [ $var = $value ] && return 0
611     done
612     return 1
613 }
614
615 check_deps(){
616     for cfg; do
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_con="\$${cfg}_conflict"
625         eval dep_sel="\$${cfg}_select"
626         eval dep_sgs="\$${cfg}_suggest"
627         eval dep_ifa="\$${cfg}_if"
628         eval dep_ifn="\$${cfg}_if_any"
629
630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
633
634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
636         enabled_all  $dep_all || disable $cfg
637         enabled_any  $dep_any || disable $cfg
638         disabled_all $dep_con || disable $cfg
639         disabled_any $dep_sel && disable $cfg
640
641         if enabled $cfg; then
642             enable_deep $dep_sel
643             enable_deep_weak $dep_sgs
644             for dep in $dep_all $dep_any $dep_sgs; do
645                 # filter out library deps, these do not belong in extralibs
646                 is_in $dep $LIBRARY_LIST && continue
647                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
648             done
649         fi
650
651         disable ${cfg}_checking
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 resolve(){
710     var=$1
711     tmpvar=
712     for entry in $(eval echo \$$var); do
713         tmpvar="$tmpvar $(eval echo \$${entry})"
714     done
715     eval "$var=\"${tmpvar}\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cflags_headers(){
727     append CFLAGS_HEADERS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_objcflags(){
735     append OBJCFLAGS $($objcflags_filter "$@")
736 }
737
738 add_ldflags(){
739     append LDFLAGS $($ldflags_filter "$@")
740 }
741
742 add_ldexeflags(){
743     append LDEXEFLAGS $($ldflags_filter "$@")
744 }
745
746 add_stripflags(){
747     append STRIPFLAGS "$@"
748 }
749
750 add_extralibs(){
751     prepend extralibs $($ldflags_filter "$@")
752 }
753
754 add_host_cppflags(){
755     append host_cppflags "$@"
756 }
757
758 add_host_cflags(){
759     append host_cflags $($host_cflags_filter "$@")
760 }
761
762 add_host_ldflags(){
763     append host_ldflags $($host_ldflags_filter "$@")
764 }
765
766 add_compat(){
767     append compat_objs $1
768     shift
769     map 'add_cppflags -D$v' "$@"
770 }
771
772 check_cmd(){
773     log "$@"
774     "$@" >> $logfile 2>&1
775 }
776
777 cc_o(){
778     eval printf '%s\\n' $CC_O
779 }
780
781 cc_e(){
782     eval printf '%s\\n' $CC_E
783 }
784
785 check_cc(){
786     log check_cc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_objcc(){
793     log check_objcc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cpp(){
800     log check_cpp "$@"
801     cat > $TMPC
802     log_file $TMPC
803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
804 }
805
806 as_o(){
807     eval printf '%s\\n' $AS_O
808 }
809
810 check_as(){
811     log check_as "$@"
812     cat > $TMPS
813     log_file $TMPS
814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
815 }
816
817 check_inline_asm(){
818     log check_inline_asm "$@"
819     name="$1"
820     code="$2"
821     shift 2
822     disable $name
823     check_cc "$@" <<EOF && enable $name
824 void foo(void){ __asm__ volatile($code); }
825 EOF
826 }
827
828 check_insn(){
829     log check_insn "$@"
830     check_inline_asm ${1}_inline "\"$2\""
831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
832 }
833
834 check_x86asm(){
835     log check_x86asm "$@"
836     echo "$1" > $TMPS
837     log_file $TMPS
838     shift 1
839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
840 }
841
842 ld_o(){
843     eval printf '%s\\n' $LD_O
844 }
845
846 check_ld(){
847     log check_ld "$@"
848     flags=$(filter_out '-l*' "$@")
849     libs=$(filter '-l*' "$@")
850     check_cc $($cflags_filter $flags) || return
851     flags=$($ldflags_filter $flags)
852     libs=$($ldflags_filter $libs)
853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
854 }
855
856 print_include(){
857     hdr=$1
858     test "${hdr%.h}" = "${hdr}" &&
859         echo "#include $hdr"    ||
860         echo "#include <$hdr>"
861 }
862
863 check_code(){
864     log check_code "$@"
865     check=$1
866     headers=$2
867     code=$3
868     shift 3
869     {
870         for hdr in $headers; do
871             print_include $hdr
872         done
873         echo "int main(void) { $code; return 0; }"
874     } | check_$check "$@"
875 }
876
877 check_cppflags(){
878     log check_cppflags "$@"
879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
880 #include <stdlib.h>;
881 EOF
882 }
883
884 test_cflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_cc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_cflags(){
893     log check_cflags "$@"
894     test_cflags "$@" && add_cflags "$@"
895 }
896
897 test_objcflags(){
898     log test_objcflags "$@"
899     set -- $($objcflags_filter "$@")
900     check_objcc "$@" <<EOF
901 int x;
902 EOF
903 }
904
905 check_objcflags(){
906     log check_objcflags "$@"
907     test_objcflags "$@" && add_objcflags "$@"
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_sanitized $header
941     check_cpp "$@" <<EOF && enable_sanitized $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     check_ld "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return 0; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     check_cpp "$@" <<EOF
994 #include <$header>
995 #if !($condition)
996 #error "unsatisfied condition: $condition"
997 #endif
998 EOF
999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     check_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     arpa_inet_h
1551     cdio_paranoia_h
1552     cdio_paranoia_paranoia_h
1553     d3d11_h
1554     dispatch_dispatch_h
1555     dev_bktr_ioctl_bt848_h
1556     dev_bktr_ioctl_meteor_h
1557     dev_ic_bt8xx_h
1558     dev_video_bktr_ioctl_bt848_h
1559     dev_video_meteor_ioctl_meteor_h
1560     direct_h
1561     dlfcn_h
1562     dxva_h
1563     gsm_h
1564     io_h
1565     mach_mach_time_h
1566     machine_ioctl_bt848_h
1567     machine_ioctl_meteor_h
1568     malloc_h
1569     poll_h
1570     sndio_h
1571     soundcard_h
1572     stdatomic_h
1573     sys_mman_h
1574     sys_param_h
1575     sys_resource_h
1576     sys_select_h
1577     sys_soundcard_h
1578     sys_time_h
1579     sys_un_h
1580     sys_videoio_h
1581     unistd_h
1582     valgrind_valgrind_h
1583     windows_h
1584     winsock2_h
1585 "
1586
1587 INTRINSICS_LIST="
1588     intrinsics_neon
1589 "
1590
1591 MATH_FUNCS="
1592     atanf
1593     atan2f
1594     cbrtf
1595     cosf
1596     exp2
1597     exp2f
1598     expf
1599     isinf
1600     isnan
1601     ldexpf
1602     llrint
1603     llrintf
1604     log2
1605     log2f
1606     log10f
1607     lrint
1608     lrintf
1609     powf
1610     rint
1611     round
1612     roundf
1613     sinf
1614     trunc
1615     truncf
1616 "
1617
1618 SYSTEM_FUNCS="
1619     aligned_malloc
1620     clock_gettime
1621     closesocket
1622     CommandLineToArgvW
1623     CoTaskMemFree
1624     CryptGenRandom
1625     fcntl
1626     flt_lim
1627     fork
1628     getaddrinfo
1629     gethrtime
1630     getopt
1631     GetProcessAffinityMask
1632     GetProcessMemoryInfo
1633     GetProcessTimes
1634     getrusage
1635     GetSystemTimeAsFileTime
1636     gettimeofday
1637     gmtime_r
1638     inet_aton
1639     isatty
1640     LoadLibrary
1641     localtime_r
1642     mach_absolute_time
1643     MapViewOfFile
1644     memalign
1645     mkstemp
1646     mmap
1647     mprotect
1648     nanosleep
1649     posix_memalign
1650     sched_getaffinity
1651     SetConsoleTextAttribute
1652     setmode
1653     setrlimit
1654     Sleep
1655     strerror_r
1656     sysconf
1657     sysctl
1658     usleep
1659     VirtualAlloc
1660 "
1661
1662 TOOLCHAIN_FEATURES="
1663     as_arch_directive
1664     as_fpu_directive
1665     as_func
1666     as_object_arch
1667     asm_mod_q
1668     attribute_may_alias
1669     attribute_packed
1670     blocks_extension
1671     ebp_available
1672     ebx_available
1673     gnu_as
1674     ibm_asm
1675     inline_asm_labels
1676     pragma_deprecated
1677     symver_asm_label
1678     symver_gnu_asm
1679     vfp_args
1680     xform_asm
1681     xmm_clobbers
1682 "
1683
1684 TYPES_LIST="
1685     CONDITION_VARIABLE_Ptr
1686     socklen_t
1687     struct_addrinfo
1688     struct_group_source_req
1689     struct_ip_mreq_source
1690     struct_ipv6_mreq
1691     struct_pollfd
1692     struct_rusage_ru_maxrss
1693     struct_sockaddr_in6
1694     struct_sockaddr_sa_len
1695     struct_sockaddr_storage
1696     struct_v4l2_frmivalenum_discrete
1697 "
1698
1699 HAVE_LIST="
1700     $ARCH_EXT_LIST
1701     $(add_suffix _external $ARCH_EXT_LIST)
1702     $(add_suffix _inline   $ARCH_EXT_LIST)
1703     $ARCH_FEATURES
1704     $BUILTIN_LIST
1705     $HAVE_LIST_CMDLINE
1706     $HAVE_LIST_PUB
1707     $HEADERS_LIST
1708     $INTRINSICS_LIST
1709     $MATH_FUNCS
1710     $SYSTEM_FUNCS
1711     $THREADS_LIST
1712     $TOOLCHAIN_FEATURES
1713     $TYPES_LIST
1714     dos_paths
1715     libc_msvcrt
1716     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1717     sdl
1718     section_data_rel_ro
1719     threads
1720     vaapi_drm
1721     vaapi_x11
1722     vdpau_x11
1723 "
1724
1725 # options emitted with CONFIG_ prefix but not available on the command line
1726 CONFIG_EXTRA="
1727     aandcttables
1728     ac3dsp
1729     adts_header
1730     audio_frame_queue
1731     audiodsp
1732     blockdsp
1733     bswapdsp
1734     cabac
1735     dirac_parse
1736     dvprofile
1737     faandct
1738     faanidct
1739     fdctdsp
1740     flacdsp
1741     fmtconvert
1742     g722dsp
1743     gmp
1744     golomb
1745     gplv3
1746     h263dsp
1747     h264chroma
1748     h264dsp
1749     h264parse
1750     h264pred
1751     h264qpel
1752     hevc_ps
1753     hpeldsp
1754     huffman
1755     huffyuvdsp
1756     huffyuvencdsp
1757     idctdsp
1758     iirfilter
1759     imdct15
1760     intrax8
1761     iso_media
1762     ividsp
1763     jpegtables
1764     lgplv3
1765     libx262
1766     libxcb_shape
1767     lpc
1768     lzf
1769     me_cmp
1770     mpeg_er
1771     mpegaudio
1772     mpegaudiodsp
1773     mpegaudioheader
1774     mpegvideo
1775     mpegvideoenc
1776     mss34dsp
1777     pixblockdsp
1778     qpeldsp
1779     qsv
1780     qsvdec
1781     qsvenc
1782     rangecoder
1783     riffdec
1784     riffenc
1785     rtpdec
1786     rtpenc_chain
1787     rv34dsp
1788     sinewin
1789     snappy
1790     srtp
1791     startcode
1792     texturedsp
1793     texturedspenc
1794     tpeldsp
1795     vaapi_encode
1796     vc1dsp
1797     videodsp
1798     vp3dsp
1799     vp56dsp
1800     vp8dsp
1801     wma_freqs
1802     wmv2dsp
1803 "
1804
1805 CMDLINE_SELECT="
1806     $ARCH_EXT_LIST
1807     $CONFIG_LIST
1808     $HAVE_LIST_CMDLINE
1809     $THREADS_LIST
1810     asm
1811     cross_compile
1812     debug
1813     extra_warnings
1814     logging
1815     lto
1816     optimizations
1817     rpath
1818 "
1819
1820 PATHS_LIST="
1821     bindir
1822     datadir
1823     docdir
1824     incdir
1825     libdir
1826     mandir
1827     prefix
1828     shlibdir
1829 "
1830
1831 CMDLINE_SET="
1832     $PATHS_LIST
1833     ar
1834     arch
1835     as
1836     cc
1837     objcc
1838     cpu
1839     cross_prefix
1840     custom_allocator
1841     dep_cc
1842     env
1843     extra_version
1844     host_cc
1845     host_cflags
1846     host_extralibs
1847     host_ld
1848     host_ldflags
1849     host_os
1850     ignore_tests
1851     ld
1852     logfile
1853     malloc_prefix
1854     nm
1855     optflags
1856     pkg_config
1857     pkg_config_flags
1858     random_seed
1859     samples
1860     sysinclude
1861     sysroot
1862     target_exec
1863     target_os
1864     target_path
1865     target_samples
1866     toolchain
1867     x86asmexe
1868 "
1869
1870 CMDLINE_APPEND="
1871     extra_cflags
1872     extra_objcflags
1873     host_cppflags
1874 "
1875
1876 # code dependency declarations
1877
1878 # architecture extensions
1879
1880 armv5te_deps="arm"
1881 armv6_deps="arm"
1882 armv6t2_deps="arm"
1883 armv8_deps="aarch64"
1884 neon_deps_any="aarch64 arm"
1885 intrinsics_neon_deps="neon"
1886 vfp_deps_any="aarch64 arm"
1887 vfpv3_deps="vfp"
1888
1889 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1890
1891 altivec_deps="ppc"
1892 dcbzl_deps="ppc"
1893 ldbrx_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 loongson_deps="mips"
1899 mips32r1_deps="mips32"
1900 mips32r2_deps="mips32"
1901 mips32r6_deps="mips32"
1902 mips64r1_deps="mips64"
1903 mips64r2_deps="mips64"
1904 mips64r6_deps="mips64"
1905
1906 vis_deps="sparc"
1907
1908 cpunop_deps="i686"
1909 x86_64_select="i686"
1910 x86_64_suggest="fast_cmov"
1911
1912 amd3dnow_deps="mmx"
1913 amd3dnowext_deps="amd3dnow"
1914 i686_deps="x86"
1915 mmx_deps="x86"
1916 mmxext_deps="mmx"
1917 sse_deps="mmxext"
1918 sse2_deps="sse"
1919 sse3_deps="sse2"
1920 ssse3_deps="sse3"
1921 sse4_deps="ssse3"
1922 sse42_deps="sse4"
1923 avx_deps="sse42"
1924 xop_deps="avx"
1925 fma3_deps="avx"
1926 fma4_deps="avx"
1927 avx2_deps="avx"
1928
1929 mmx_external_deps="x86asm"
1930 mmx_inline_deps="inline_asm x86"
1931 mmx_suggest="mmx_external mmx_inline"
1932
1933 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1934     eval dep=\$${ext}_deps
1935     eval ${ext}_external_deps='"${dep}_external"'
1936     eval ${ext}_inline_deps='"${dep}_inline"'
1937     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1938 done
1939
1940 aligned_stack_if_any="aarch64 ppc x86"
1941 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1942 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1943 fast_unaligned_if_any="aarch64 ppc x86"
1944 simd_align_16_if_any="altivec neon sse"
1945 simd_align_32_if_any="avx"
1946
1947 # system capabilities
1948 symver_if_any="symver_asm_label symver_gnu_asm"
1949 valgrind_backtrace_conflict="optimizations"
1950 valgrind_backtrace_deps="valgrind_valgrind_h"
1951
1952 # threading support
1953 atomics_gcc_if="sync_val_compare_and_swap"
1954 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1955 atomics_win32_if="MemoryBarrier"
1956 atomics_native_if_any="$ATOMICS_LIST"
1957 w32threads_deps="atomics_native"
1958 threads_if_any="$THREADS_LIST"
1959
1960 # subsystems
1961 dct_select="rdft"
1962 dirac_parse_select="golomb"
1963 error_resilience_select="me_cmp"
1964 faandct_deps="faan"
1965 faandct_select="fdctdsp"
1966 faanidct_deps="faan"
1967 faanidct_select="idctdsp"
1968 h264dsp_select="startcode"
1969 hevc_ps_select="golomb"
1970 intrax8_select="blockdsp idctdsp"
1971 mdct_select="fft"
1972 rdft_select="fft"
1973 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1974 mpeg_er_select="error_resilience"
1975 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1976 mpegaudiodsp_select="dct"
1977 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1978 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1979 vc1dsp_select="h264chroma qpeldsp startcode"
1980
1981 # decoders / encoders
1982 aac_decoder_select="adts_header imdct15 mdct sinewin"
1983 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1984 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1985 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1986 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1987 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1988 adpcm_g722_decoder_select="g722dsp"
1989 adpcm_g722_encoder_select="g722dsp"
1990 aic_decoder_select="golomb idctdsp"
1991 alac_encoder_select="lpc"
1992 als_decoder_select="bswapdsp"
1993 amrnb_decoder_select="lsp"
1994 amrwb_decoder_select="lsp"
1995 amv_decoder_select="sp5x_decoder"
1996 ape_decoder_select="bswapdsp"
1997 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1998 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1999 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2000 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2001 atrac1_decoder_select="mdct sinewin"
2002 atrac3_decoder_select="mdct"
2003 atrac3p_decoder_select="mdct sinewin"
2004 bink_decoder_select="blockdsp hpeldsp"
2005 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2006 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2007 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2008 clearvideo_decoder_select="idctdsp"
2009 cllc_decoder_select="bswapdsp"
2010 comfortnoise_encoder_select="lpc"
2011 cook_decoder_select="audiodsp mdct sinewin"
2012 cscd_decoder_select="lzo"
2013 cscd_decoder_suggest="zlib"
2014 dca_decoder_select="fmtconvert mdct"
2015 dds_decoder_select="texturedsp"
2016 dnxhd_decoder_select="blockdsp idctdsp"
2017 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2018 dvvideo_decoder_select="dvprofile idctdsp"
2019 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2020 dxa_decoder_deps="zlib"
2021 dxv_decoder_select="lzf texturedsp"
2022 eac3_decoder_select="ac3_decoder"
2023 eac3_encoder_select="ac3_encoder"
2024 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2025 eatgq_decoder_select="aandcttables idctdsp"
2026 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2027 exr_decoder_deps="zlib"
2028 ffv1_decoder_select="rangecoder"
2029 ffv1_encoder_select="rangecoder"
2030 ffvhuff_decoder_select="huffyuv_decoder"
2031 ffvhuff_encoder_select="huffyuv_encoder"
2032 fic_decoder_select="golomb"
2033 flac_decoder_select="flacdsp"
2034 flac_encoder_select="bswapdsp flacdsp lpc"
2035 flashsv_decoder_deps="zlib"
2036 flashsv_encoder_deps="zlib"
2037 flashsv2_decoder_deps="zlib"
2038 flv_decoder_select="h263_decoder"
2039 flv_encoder_select="h263_encoder"
2040 fourxm_decoder_select="blockdsp bswapdsp"
2041 fraps_decoder_select="bswapdsp huffman"
2042 g2m_decoder_deps="zlib"
2043 g2m_decoder_select="blockdsp idctdsp jpegtables"
2044 h261_decoder_select="mpeg_er mpegvideo"
2045 h261_encoder_select="aandcttables mpegvideoenc"
2046 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2047 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2048 h263i_decoder_select="h263_decoder"
2049 h263p_encoder_select="h263_encoder"
2050 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2051 h264_decoder_suggest="error_resilience"
2052 hap_decoder_select="snappy texturedsp"
2053 hap_encoder_deps="libsnappy"
2054 hap_encoder_select="texturedspenc"
2055 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2056 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2057 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2058 iac_decoder_select="imc_decoder"
2059 imc_decoder_select="bswapdsp fft mdct sinewin"
2060 indeo3_decoder_select="hpeldsp"
2061 indeo4_decoder_select="ividsp"
2062 indeo5_decoder_select="ividsp"
2063 interplay_video_decoder_select="hpeldsp"
2064 jpegls_decoder_select="mjpeg_decoder"
2065 jv_decoder_select="blockdsp"
2066 lagarith_decoder_select="huffyuvdsp"
2067 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2068 magicyuv_decoder_select="huffyuvdsp"
2069 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2070 metasound_decoder_select="lsp mdct sinewin"
2071 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2072 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2073 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2074 mjpegb_decoder_select="mjpeg_decoder"
2075 mlp_decoder_select="mlp_parser"
2076 motionpixels_decoder_select="bswapdsp"
2077 mp1_decoder_select="mpegaudio"
2078 mp1float_decoder_select="mpegaudio"
2079 mp2_decoder_select="mpegaudio"
2080 mp2float_decoder_select="mpegaudio"
2081 mp3_decoder_select="mpegaudio"
2082 mp3adu_decoder_select="mpegaudio"
2083 mp3adufloat_decoder_select="mpegaudio"
2084 mp3float_decoder_select="mpegaudio"
2085 mp3on4_decoder_select="mpegaudio"
2086 mp3on4float_decoder_select="mpegaudio"
2087 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2088 mpc8_decoder_select="mpegaudiodsp"
2089 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2090 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2091 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2092 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2093 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2094 mpeg4_encoder_select="h263_encoder"
2095 msa1_decoder_select="mss34dsp"
2096 msmpeg4v1_decoder_select="h263_decoder"
2097 msmpeg4v2_decoder_select="h263_decoder"
2098 msmpeg4v2_encoder_select="h263_encoder"
2099 msmpeg4v3_decoder_select="h263_decoder"
2100 msmpeg4v3_encoder_select="h263_encoder"
2101 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2102 mts2_decoder_select="mss34dsp"
2103 mxpeg_decoder_select="mjpeg_decoder"
2104 nellymoser_decoder_select="mdct sinewin"
2105 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2106 nuv_decoder_select="idctdsp lzo"
2107 on2avc_decoder_select="mdct"
2108 opus_decoder_deps="avresample"
2109 opus_decoder_select="imdct15"
2110 png_decoder_deps="zlib"
2111 png_encoder_deps="zlib"
2112 png_encoder_select="huffyuvencdsp"
2113 prores_decoder_select="idctdsp"
2114 prores_encoder_select="fdctdsp"
2115 qcelp_decoder_select="lsp"
2116 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2117 ra_144_encoder_select="audio_frame_queue lpc"
2118 ralf_decoder_select="golomb"
2119 rscc_decoder_deps="zlib"
2120 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2121 rv10_encoder_select="h263_encoder"
2122 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2123 rv20_encoder_select="h263_encoder"
2124 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2125 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2126 screenpresso_decoder_deps="zlib"
2127 sipr_decoder_select="lsp"
2128 sp5x_decoder_select="mjpeg_decoder"
2129 svq1_decoder_select="hpeldsp"
2130 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2131 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2132 svq3_decoder_suggest="zlib"
2133 tak_decoder_select="audiodsp"
2134 tdsc_decoder_deps="zlib"
2135 tdsc_decoder_select="mjpeg_decoder"
2136 theora_decoder_select="vp3_decoder"
2137 thp_decoder_select="mjpeg_decoder"
2138 tiff_decoder_suggest="zlib"
2139 tiff_encoder_suggest="zlib"
2140 truehd_decoder_select="mlp_decoder"
2141 truemotion2_decoder_select="bswapdsp"
2142 truespeech_decoder_select="bswapdsp"
2143 tscc_decoder_deps="zlib"
2144 txd_decoder_select="texturedsp"
2145 twinvq_decoder_select="mdct lsp sinewin"
2146 utvideo_decoder_select="bswapdsp huffyuvdsp"
2147 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2148 vble_decoder_select="huffyuvdsp"
2149 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2150 vc1image_decoder_select="vc1_decoder"
2151 vorbis_decoder_select="mdct"
2152 vorbis_encoder_select="mdct"
2153 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2154 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2155 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2156 vp6a_decoder_select="vp6_decoder"
2157 vp6f_decoder_select="vp6_decoder"
2158 vp7_decoder_select="h264pred videodsp vp8dsp"
2159 vp8_decoder_select="h264pred videodsp vp8dsp"
2160 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2161 webp_decoder_select="vp8_decoder"
2162 wmapro_decoder_select="mdct sinewin wma_freqs"
2163 wmav1_decoder_select="mdct sinewin wma_freqs"
2164 wmav1_encoder_select="mdct sinewin wma_freqs"
2165 wmav2_decoder_select="mdct sinewin wma_freqs"
2166 wmav2_encoder_select="mdct sinewin wma_freqs"
2167 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2168 wmv1_decoder_select="h263_decoder"
2169 wmv1_encoder_select="h263_encoder"
2170 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2171 wmv2_encoder_select="h263_encoder wmv2dsp"
2172 wmv3_decoder_select="vc1_decoder"
2173 wmv3image_decoder_select="wmv3_decoder"
2174 zerocodec_decoder_deps="zlib"
2175 zlib_decoder_deps="zlib"
2176 zlib_encoder_deps="zlib"
2177 zmbv_decoder_deps="zlib"
2178 zmbv_encoder_deps="zlib"
2179
2180 # hardware accelerators
2181 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2182 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2183 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2184 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2185
2186 h263_vaapi_hwaccel_deps="vaapi"
2187 h263_vaapi_hwaccel_select="h263_decoder"
2188 h264_d3d11va_hwaccel_deps="d3d11va"
2189 h264_d3d11va_hwaccel_select="h264_decoder"
2190 h264_d3d11va2_hwaccel_deps="d3d11va"
2191 h264_d3d11va2_hwaccel_select="h264_decoder"
2192 h264_dxva2_hwaccel_deps="dxva2"
2193 h264_dxva2_hwaccel_select="h264_decoder"
2194 h264_mmal_hwaccel_deps="mmal"
2195 h264_qsv_hwaccel_deps="libmfx"
2196 h264_vaapi_hwaccel_deps="vaapi"
2197 h264_vaapi_hwaccel_select="h264_decoder"
2198 h264_vda_hwaccel_deps="vda"
2199 h264_vda_hwaccel_select="h264_decoder"
2200 h264_vda_old_hwaccel_deps="vda"
2201 h264_vda_old_hwaccel_select="h264_decoder"
2202 h264_vdpau_hwaccel_deps="vdpau"
2203 h264_vdpau_hwaccel_select="h264_decoder"
2204 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2205 hevc_d3d11va_hwaccel_select="hevc_decoder"
2206 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2207 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2208 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2209 hevc_dxva2_hwaccel_select="hevc_decoder"
2210 hevc_qsv_hwaccel_deps="libmfx"
2211 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2212 hevc_vaapi_hwaccel_select="hevc_decoder"
2213 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2214 hevc_vdpau_hwaccel_select="hevc_decoder"
2215 mpeg1_vdpau_hwaccel_deps="vdpau"
2216 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2217 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2218 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2220 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2221 mpeg2_dxva2_hwaccel_deps="dxva2"
2222 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2223 mpeg2_mmal_hwaccel_deps="mmal"
2224 mpeg2_qsv_hwaccel_deps="libmfx"
2225 mpeg2_vaapi_hwaccel_deps="vaapi"
2226 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vdpau_hwaccel_deps="vdpau"
2228 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2229 mpeg4_vaapi_hwaccel_deps="vaapi"
2230 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2231 mpeg4_vdpau_hwaccel_deps="vdpau"
2232 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2233 vc1_d3d11va_hwaccel_deps="d3d11va"
2234 vc1_d3d11va_hwaccel_select="vc1_decoder"
2235 vc1_d3d11va2_hwaccel_deps="d3d11va"
2236 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2237 vc1_dxva2_hwaccel_deps="dxva2"
2238 vc1_dxva2_hwaccel_select="vc1_decoder"
2239 vc1_mmal_hwaccel_deps="mmal"
2240 vc1_qsv_hwaccel_deps="libmfx"
2241 vc1_vaapi_hwaccel_deps="vaapi"
2242 vc1_vaapi_hwaccel_select="vc1_decoder"
2243 vc1_vdpau_hwaccel_deps="vdpau"
2244 vc1_vdpau_hwaccel_select="vc1_decoder"
2245 vp8_qsv_hwaccel_deps="libmfx"
2246 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2247 vp8_vaapi_hwaccel_select="vp8_decoder"
2248 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2249 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2250 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2251 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2252 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2253
2254 # hardware-accelerated codecs
2255 nvenc_deps_any="libdl LoadLibrary"
2256 omx_deps="libdl pthreads"
2257 omx_rpi_select="omx"
2258 qsv_deps="libmfx"
2259 qsvdec_select="qsv"
2260 qsvenc_select="qsv"
2261 vaapi_encode_deps="vaapi"
2262
2263 hwupload_cuda_filter_deps="cuda"
2264 scale_npp_filter_deps="cuda libnpp"
2265
2266 h264_mmal_decoder_deps="mmal"
2267 h264_nvenc_encoder_deps="nvenc"
2268 h264_omx_encoder_deps="omx"
2269 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2270 h264_qsv_encoder_select="qsvenc"
2271 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2272 h264_vaapi_encoder_select="vaapi_encode golomb"
2273 hevc_nvenc_encoder_deps="nvenc"
2274 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2275 hevc_qsv_encoder_select="hevc_ps qsvenc"
2276 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2277 hevc_vaapi_encoder_select="vaapi_encode golomb"
2278 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2279 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2280 mpeg2_mmal_decoder_deps="mmal"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2282 mpeg2_qsv_encoder_select="qsvenc"
2283 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2284 mpeg2_vaapi_encoder_select="vaapi_encode"
2285 mpeg4_omx_encoder_deps="omx"
2286 vc1_mmal_decoder_deps="mmal"
2287 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2288 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2289 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2290 vp8_vaapi_encoder_select="vaapi_encode"
2291 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2292 vp9_vaapi_encoder_select="vaapi_encode"
2293
2294 nvenc_h264_encoder_select="h264_nvenc_encoder"
2295 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2296
2297 # parsers
2298 aac_parser_select="adts_header"
2299 h264_parser_select="golomb h264dsp h264parse"
2300 hevc_parser_select="hevc_ps"
2301 mpegaudio_parser_select="mpegaudioheader"
2302 mpegvideo_parser_select="mpegvideo"
2303 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2304 vc1_parser_select="vc1dsp"
2305
2306 # bitstream_filters
2307 aac_adtstoasc_bsf_select="adts_header"
2308 mjpeg2jpeg_bsf_select="jpegtables"
2309
2310 # external libraries
2311 avisynth_deps="LoadLibrary"
2312 avxsynth_deps="libdl"
2313 avisynth_demuxer_deps_any="avisynth avxsynth"
2314 avisynth_demuxer_select="riffdec"
2315 libdcadec_decoder_deps="libdcadec"
2316 libfaac_encoder_deps="libfaac"
2317 libfaac_encoder_select="audio_frame_queue"
2318 libfdk_aac_decoder_deps="libfdk_aac"
2319 libfdk_aac_encoder_deps="libfdk_aac"
2320 libfdk_aac_encoder_select="audio_frame_queue"
2321 libgsm_decoder_deps="libgsm"
2322 libgsm_encoder_deps="libgsm"
2323 libgsm_ms_decoder_deps="libgsm"
2324 libgsm_ms_encoder_deps="libgsm"
2325 libilbc_decoder_deps="libilbc"
2326 libilbc_encoder_deps="libilbc"
2327 libkvazaar_encoder_deps="libkvazaar"
2328 libmp3lame_encoder_deps="libmp3lame"
2329 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2330 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2331 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2332 libopencore_amrnb_encoder_select="audio_frame_queue"
2333 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2334 libopenh264_decoder_deps="libopenh264"
2335 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2336 libopenh264_encoder_deps="libopenh264"
2337 libopenjpeg_decoder_deps="libopenjpeg"
2338 libopenjpeg_encoder_deps="libopenjpeg"
2339 libopus_decoder_deps="libopus"
2340 libopus_encoder_deps="libopus"
2341 libopus_encoder_select="audio_frame_queue"
2342 libschroedinger_decoder_deps="libschroedinger"
2343 libschroedinger_encoder_deps="libschroedinger"
2344 libspeex_decoder_deps="libspeex"
2345 libspeex_encoder_deps="libspeex"
2346 libspeex_encoder_select="audio_frame_queue"
2347 libtheora_encoder_deps="libtheora"
2348 libtwolame_encoder_deps="libtwolame"
2349 libvo_aacenc_encoder_deps="libvo_aacenc"
2350 libvo_aacenc_encoder_select="audio_frame_queue"
2351 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2352 libvorbis_encoder_deps="libvorbis"
2353 libvorbis_encoder_select="audio_frame_queue"
2354 libvpx_vp8_decoder_deps="libvpx"
2355 libvpx_vp8_encoder_deps="libvpx"
2356 libvpx_vp9_decoder_deps="libvpx"
2357 libvpx_vp9_encoder_deps="libvpx"
2358 libwavpack_encoder_deps="libwavpack"
2359 libwavpack_encoder_select="audio_frame_queue"
2360 libwebp_encoder_deps="libwebp"
2361 libx262_encoder_deps="libx262"
2362 libx264_encoder_deps="libx264"
2363 libx265_encoder_deps="libx265"
2364 libxavs_encoder_deps="libxavs"
2365 libxvid_encoder_deps="libxvid mkstemp"
2366
2367 # demuxers / muxers
2368 ac3_demuxer_select="ac3_parser"
2369 asf_demuxer_select="riffdec"
2370 asf_muxer_select="riffenc"
2371 asf_stream_muxer_select="asf_muxer"
2372 avi_demuxer_select="iso_media riffdec"
2373 avi_muxer_select="riffenc"
2374 caf_demuxer_select="iso_media riffdec"
2375 dash_muxer_select="mp4_muxer"
2376 dirac_demuxer_select="dirac_parser"
2377 dv_demuxer_select="dvprofile"
2378 dv_muxer_select="dvprofile"
2379 dxa_demuxer_select="riffdec"
2380 eac3_demuxer_select="ac3_parser"
2381 f4v_muxer_select="mov_muxer"
2382 flac_demuxer_select="flac_parser"
2383 hds_muxer_select="flv_muxer"
2384 hls_muxer_select="mpegts_muxer"
2385 ipod_muxer_select="mov_muxer"
2386 ismv_muxer_select="mov_muxer"
2387 matroska_audio_muxer_select="matroska_muxer"
2388 matroska_demuxer_select="iso_media riffdec"
2389 matroska_demuxer_suggest="bzlib lzo zlib"
2390 matroska_muxer_select="iso_media riffenc"
2391 mmf_muxer_select="riffenc"
2392 mov_demuxer_select="iso_media riffdec"
2393 mov_demuxer_suggest="zlib"
2394 mov_muxer_select="iso_media riffenc rtpenc_chain"
2395 mp3_demuxer_select="mpegaudio_parser"
2396 mp3_muxer_select="mpegaudioheader"
2397 mp4_muxer_select="mov_muxer"
2398 mpegts_demuxer_select="iso_media"
2399 mpegts_muxer_select="adts_muxer latm_muxer"
2400 mpegtsraw_demuxer_select="mpegts_demuxer"
2401 mxf_d10_muxer_select="mxf_muxer"
2402 nut_muxer_select="riffenc"
2403 nuv_demuxer_select="riffdec"
2404 oga_muxer_select="ogg_muxer"
2405 ogg_demuxer_select="dirac_parse"
2406 opus_muxer_select="ogg_muxer"
2407 psp_muxer_select="mov_muxer"
2408 rtp_demuxer_select="sdp_demuxer"
2409 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2410 rtsp_demuxer_select="http_protocol rtpdec"
2411 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2412 sap_demuxer_select="sdp_demuxer"
2413 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2414 sdp_demuxer_select="rtpdec"
2415 smoothstreaming_muxer_select="ismv_muxer"
2416 spdif_demuxer_select="adts_header"
2417 spdif_muxer_select="adts_header"
2418 spx_muxer_select="ogg_muxer"
2419 swf_demuxer_suggest="zlib"
2420 tak_demuxer_select="tak_parser"
2421 tg2_muxer_select="mov_muxer"
2422 tgp_muxer_select="mov_muxer"
2423 w64_demuxer_select="wav_demuxer"
2424 wav_demuxer_select="riffdec"
2425 wav_muxer_select="riffenc"
2426 webm_muxer_select="iso_media riffenc"
2427 wtv_demuxer_select="mpegts_demuxer riffdec"
2428 xmv_demuxer_select="riffdec"
2429 xwma_demuxer_select="riffdec"
2430
2431 # indevs / outdevs
2432 alsa_indev_deps="alsa"
2433 alsa_outdev_deps="alsa"
2434 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2435 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2436 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2437 dv1394_indev_deps="dv1394"
2438 dv1394_indev_select="dv_demuxer"
2439 fbdev_indev_deps="linux_fb_h"
2440 jack_indev_deps="libjack"
2441 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2442 libcdio_indev_deps="libcdio"
2443 libdc1394_indev_deps="libdc1394"
2444 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2445 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2446 pulse_indev_deps="libpulse"
2447 sndio_indev_deps="sndio"
2448 sndio_outdev_deps="sndio"
2449 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2450 vfwcap_indev_deps="vfw32 vfwcap_defines"
2451 xcbgrab_indev_deps="libxcb libxcb_shape"
2452 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2453
2454 # protocols
2455 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2456 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2457 ffrtmpcrypt_protocol_select="tcp_protocol"
2458 ffrtmphttp_protocol_conflict="librtmp_protocol"
2459 ffrtmphttp_protocol_select="http_protocol"
2460 gopher_protocol_select="network"
2461 http_protocol_select="tcp_protocol"
2462 http_protocol_suggest="zlib"
2463 httpproxy_protocol_select="tcp_protocol"
2464 httpproxy_protocol_suggest="zlib"
2465 https_protocol_select="tls_protocol"
2466 https_protocol_suggest="zlib"
2467 icecast_protocol_select="http_protocol"
2468 librtmp_protocol_deps="librtmp"
2469 librtmpe_protocol_deps="librtmp"
2470 librtmps_protocol_deps="librtmp"
2471 librtmpt_protocol_deps="librtmp"
2472 librtmpte_protocol_deps="librtmp"
2473 mmsh_protocol_select="http_protocol"
2474 mmst_protocol_select="network"
2475 rtmp_protocol_conflict="librtmp_protocol"
2476 rtmp_protocol_select="tcp_protocol"
2477 rtmp_protocol_suggest="zlib"
2478 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2479 rtmpe_protocol_suggest="zlib"
2480 rtmps_protocol_conflict="librtmp_protocol"
2481 rtmps_protocol_select="tls_protocol"
2482 rtmps_protocol_suggest="zlib"
2483 rtmpt_protocol_select="ffrtmphttp_protocol"
2484 rtmpt_protocol_suggest="zlib"
2485 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2486 rtmpte_protocol_suggest="zlib"
2487 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2488 rtmpts_protocol_suggest="zlib"
2489 rtp_protocol_select="udp_protocol"
2490 sctp_protocol_deps="struct_sctp_event_subscribe"
2491 sctp_protocol_select="network"
2492 srtp_protocol_select="rtp_protocol srtp"
2493 tcp_protocol_select="network"
2494 tls_protocol_deps_any="gnutls openssl"
2495 tls_protocol_select="tcp_protocol"
2496 udp_protocol_select="network"
2497 unix_protocol_deps="sys_un_h"
2498 unix_protocol_select="network"
2499
2500 # filters
2501 asyncts_filter_deps="avresample"
2502 blackframe_filter_deps="gpl"
2503 boxblur_filter_deps="gpl"
2504 bs2b_filter_deps="libbs2b"
2505 cropdetect_filter_deps="gpl"
2506 deinterlace_qsv_filter_deps="libmfx"
2507 deinterlace_vaapi_filter_deps="vaapi"
2508 delogo_filter_deps="gpl"
2509 drawtext_filter_deps="libfreetype"
2510 drawtext_filter_suggest="libfontconfig"
2511 frei0r_filter_deps="frei0r libdl"
2512 frei0r_src_filter_deps="frei0r libdl"
2513 hdcd_filter_deps="libhdcd"
2514 hqdn3d_filter_deps="gpl"
2515 interlace_filter_deps="gpl"
2516 movie_filter_deps="avcodec avformat"
2517 ocv_filter_deps="libopencv"
2518 resample_filter_deps="avresample"
2519 scale_filter_deps="swscale"
2520 scale_qsv_filter_deps="libmfx"
2521 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2522
2523 # examples
2524 decode_audio_example_deps="avcodec avutil"
2525 decode_video_example_deps="avcodec avutil"
2526 encode_audio_example_deps="avcodec avutil"
2527 encode_video_example_deps="avcodec avutil"
2528 filter_audio_example_deps="avfilter avutil"
2529 metadata_example_deps="avformat avutil"
2530 output_example_deps="avcodec avformat avresample avutil swscale"
2531 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2532 transcode_aac_example_deps="avcodec avformat avresample"
2533
2534 # EXTRALIBS_LIST
2535 cpu_init_extralibs="pthreads_extralibs"
2536 cws2fws_extralibs="zlib_extralibs"
2537
2538 # libraries, in linking order
2539 avcodec_deps="avutil"
2540 avcodec_select="null_bsf"
2541 avdevice_deps="avformat avcodec avutil"
2542 avfilter_deps="avutil"
2543 avformat_deps="avcodec avutil"
2544 avformat_suggest="network"
2545 avresample_deps="avutil"
2546 swscale_deps="avutil"
2547
2548 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2549 avdevice_extralibs="libm_extralibs"
2550 avformat_extralibs="libm_extralibs"
2551 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2552 avresample_extralibs="libm_extralibs"
2553 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2554 swscale_extralibs="libm_extralibs"
2555
2556 # programs
2557 avconv_deps="avcodec avfilter avformat avresample swscale"
2558 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2559                fps_filter null_filter resample_filter scale_filter
2560                trim_filter"
2561 avconv_suggest="psapi shell32"
2562 avplay_deps="avcodec avfilter avformat avresample sdl"
2563 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2564 avplay_suggest="shell32"
2565 avprobe_deps="avcodec avformat"
2566 avprobe_suggest="shell32"
2567
2568 # documentation
2569 pod2man_deps="doc"
2570 texi2html_deps="doc"
2571
2572 # default parameters
2573
2574 logfile="avbuild/config.log"
2575
2576 # installation paths
2577 prefix_default="/usr/local"
2578 bindir_default='${prefix}/bin'
2579 datadir_default='${prefix}/share/avconv'
2580 docdir_default='${prefix}/share/doc/libav'
2581 incdir_default='${prefix}/include'
2582 libdir_default='${prefix}/lib'
2583 mandir_default='${prefix}/share/man'
2584 shlibdir_default="$libdir_default"
2585
2586 # toolchain
2587 ar_default="ar"
2588 cc_default="gcc"
2589 host_cc_default="gcc"
2590 x86asmexe_default="nasm"
2591 ln_s="ln -s -f"
2592 nm_default="nm -g"
2593 pkg_config_default=pkg-config
2594 ranlib="ranlib"
2595 strip="strip"
2596 version_script='--version-script'
2597
2598 # machine
2599 arch_default=$(uname -m)
2600 cpu="generic"
2601 intrinsics="none"
2602
2603 # OS
2604 target_os_default=$(tolower $(uname -s))
2605 host_os=$target_os_default
2606
2607 # configurable options
2608 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2609
2610 enable asm
2611 enable debug
2612 enable doc
2613 enable faan faandct faanidct
2614 enable optimizations
2615 enable safe_bitstream_reader
2616 enable static
2617 enable swscale_alpha
2618 enable valgrind_backtrace
2619
2620 # By default, enable only those hwaccels that have no external dependencies.
2621 enable d3d11va dxva2 vda vdpau
2622
2623 # internal components are enabled by default
2624 enable $EXTRALIBS_LIST
2625
2626 # Avoid external, non-system, libraries getting enabled by dependency resolution
2627 disable $EXTERNAL_LIBRARY_LIST
2628
2629 # build settings
2630 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2631 LIBPREF="lib"
2632 LIBSUF=".a"
2633 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2634 SLIBPREF="lib"
2635 SLIBSUF=".so"
2636 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2637 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2638 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2639 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2640 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2641 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2642 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2643
2644 asflags_filter=echo
2645 cflags_filter=echo
2646 ldflags_filter=echo
2647
2648 AS_C='-c'
2649 AS_O='-o $@'
2650 CC_C='-c'
2651 CC_E='-E -o $@'
2652 CC_O='-o $@'
2653 OBJCC_C='-c'
2654 OBJCC_E='-E -o $@'
2655 OBJCC_O='-o $@'
2656 X86ASM_O='-o $@'
2657 LD_O='-o $@'
2658 LD_LIB='-l%'
2659 LD_PATH='-L'
2660 HOSTCC_C='-c'
2661 HOSTCC_E='-E -o $@'
2662 HOSTCC_O='-o $@'
2663 HOSTLD_O='-o $@'
2664
2665 host_extralibs='-lm'
2666 host_cflags_filter=echo
2667 host_ldflags_filter=echo
2668
2669 target_path='$(CURDIR)'
2670
2671 # since the object filename is not given with the -MM flag, the compiler
2672 # is only able to print the basename, and we must add the path ourselves
2673 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2674 DEPFLAGS='-MM'
2675
2676 mkdir -p avbuild
2677
2678 # find source path
2679 if test -f configure; then
2680     source_path=.
2681 else
2682     source_path=$(cd $(dirname "$0"); pwd)
2683     echo "$source_path" | grep -q '[[:blank:]]' &&
2684         die "Out of tree builds are impossible with whitespace in source path."
2685     test -e "$source_path/config.h" &&
2686         die "Out of tree builds are impossible with config.h in source dir."
2687 fi
2688
2689 for v in "$@"; do
2690     r=${v#*=}
2691     l=${v%"$r"}
2692     r=$(sh_quote "$r")
2693     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2694 done
2695
2696 find_things(){
2697     thing=$1
2698     pattern=$2
2699     file=$source_path/$3
2700     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2701 }
2702
2703 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2704 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2705 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2706 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2707 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2708 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2709 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2710 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2711 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2712
2713 find_things_extern(){
2714     thing=$1
2715     pattern=$2
2716     file=$source_path/$3
2717     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2718 }
2719
2720 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2721 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2722
2723 AVCODEC_COMPONENTS_LIST="
2724     $BSF_LIST
2725     $DECODER_LIST
2726     $ENCODER_LIST
2727     $HWACCEL_LIST
2728     $PARSER_LIST
2729 "
2730
2731 AVDEVICE_COMPONENTS_LIST="
2732     $INDEV_LIST
2733     $OUTDEV_LIST
2734 "
2735
2736 AVFILTER_COMPONENTS_LIST="
2737     $FILTER_LIST
2738 "
2739
2740 AVFORMAT_COMPONENTS_LIST="
2741     $DEMUXER_LIST
2742     $MUXER_LIST
2743     $PROTOCOL_LIST
2744 "
2745
2746 ALL_COMPONENTS="
2747     $AVCODEC_COMPONENTS_LIST
2748     $AVDEVICE_COMPONENTS_LIST
2749     $AVFILTER_COMPONENTS_LIST
2750     $AVFORMAT_COMPONENTS_LIST
2751 "
2752
2753 for n in $COMPONENT_LIST; do
2754     v=$(toupper ${n%s})_LIST
2755     eval enable \$$v
2756     eval ${n}_if_any="\$$v"
2757 done
2758
2759 enable $ARCH_EXT_LIST
2760
2761 die_unknown(){
2762     echo "Unknown option \"$1\"."
2763     echo "See $0 --help for available options."
2764     exit 1
2765 }
2766
2767 print_3_columns() {
2768     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2769 }
2770
2771 show_list() {
2772     suffix=_$1
2773     shift
2774     echo $* | sed s/$suffix//g | print_3_columns
2775     exit 0
2776 }
2777
2778 rand_list(){
2779     IFS=', '
2780     set -- $*
2781     unset IFS
2782     for thing; do
2783         comp=${thing%:*}
2784         prob=${thing#$comp}
2785         prob=${prob#:}
2786         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2787         echo "prob ${prob:-0.5}"
2788         printf '%s\n' $comp
2789     done
2790 }
2791
2792 do_random(){
2793     action=$1
2794     shift
2795     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2796     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2797 }
2798
2799 for opt do
2800     optval="${opt#*=}"
2801     case "$opt" in
2802         --extra-ldflags=*)
2803             add_ldflags $optval
2804         ;;
2805         --extra-ldexeflags=*)
2806             add_ldexeflags $optval
2807         ;;
2808         --extra-libs=*)
2809             add_extralibs $optval
2810         ;;
2811         --disable-devices)
2812             disable $INDEV_LIST $OUTDEV_LIST
2813         ;;
2814         --enable-debug=*)
2815             debuglevel="$optval"
2816         ;;
2817         --disable-programs)
2818             disable $PROGRAM_LIST
2819         ;;
2820         --disable-everything)
2821             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2822         ;;
2823         --disable-all)
2824             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2825             disable $LIBRARY_LIST $PROGRAM_LIST doc
2826         ;;
2827         --enable-random|--disable-random)
2828             action=${opt%%-random}
2829             do_random ${action#--} $COMPONENT_LIST
2830         ;;
2831         --enable-random=*|--disable-random=*)
2832             action=${opt%%-random=*}
2833             do_random ${action#--} $optval
2834         ;;
2835         --enable-*=*|--disable-*=*)
2836             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2837             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2838             eval list=\$$(toupper $thing)_LIST
2839             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2840             $action $(filter "$name" $list)
2841         ;;
2842         --enable-avserver|--disable-avserver*)
2843             warn "avserver has been removed, the ${opt} option is only"\
2844                  "provided for compatibility and will be removed in the future"
2845         ;;
2846         --enable-yasm|--disable-yasm)
2847             warn "The ${opt} option is only provided for compatibility and will be\n"\
2848                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2849             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2850         ;;
2851         --enable-?*|--disable-?*)
2852             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2853             if is_in $option $COMPONENT_LIST; then
2854                 test $action = disable && action=unset
2855                 eval $action \$$(toupper ${option%s})_LIST
2856             elif is_in $option $CMDLINE_SELECT; then
2857                 $action $option
2858             else
2859                 die_unknown $opt
2860             fi
2861         ;;
2862         --list-*)
2863             NAME="${opt#--list-}"
2864             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2865             NAME=${NAME%s}
2866             eval show_list $NAME \$$(toupper $NAME)_LIST
2867         ;;
2868         --help|-h) show_help
2869         ;;
2870         --quiet|-q) quiet=yes
2871         ;;
2872         *)
2873             optname="${opt%%=*}"
2874             optname="${optname#--}"
2875             optname=$(echo "$optname" | sed 's/-/_/g')
2876             if is_in $optname $CMDLINE_SET; then
2877                 eval $optname='$optval'
2878             elif is_in $optname $CMDLINE_APPEND; then
2879                 append $optname "$optval"
2880             else
2881                 die_unknown $opt
2882             fi
2883         ;;
2884     esac
2885 done
2886
2887 for e in $env; do
2888     eval "export $e"
2889 done
2890
2891 disabled logging && logfile=/dev/null
2892
2893 # Die early if licensing-related configure options are incompatible.
2894 die_license_disabled() {
2895     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2896 }
2897
2898 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2899 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2900 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2901
2902 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2903
2904 enabled_all gnutls openssl &&
2905     die "GnuTLS and OpenSSL must not be enabled at the same time."
2906
2907 # Disable all the library-specific components if the library itself
2908 # is disabled, see AVCODEC_LIST and following _LIST variables.
2909
2910 disable_components(){
2911     disabled ${1} && disable $(
2912         eval components="\$$(toupper ${1})_COMPONENTS"
2913         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2914     )
2915 }
2916
2917 map 'disable_components $v' $LIBRARY_LIST
2918
2919 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2920 set >> $logfile
2921
2922 case "$toolchain" in
2923     *-asan)
2924         cc_default="${toolchain%-asan}"
2925         add_cflags  -fsanitize=address
2926         add_ldflags -fsanitize=address
2927     ;;
2928     *-msan)
2929         cc_default="${toolchain%-msan}"
2930         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2931         add_ldflags -fsanitize=memory
2932     ;;
2933     *-tsan)
2934         cc_default="${toolchain%-tsan}"
2935         add_cflags  -fsanitize=thread -fPIE
2936         add_ldflags -fsanitize=thread -pie
2937         case "$toolchain" in
2938             gcc-tsan)
2939                 add_cflags  -fPIC
2940                 add_ldflags -fPIC
2941                 ;;
2942         esac
2943     ;;
2944     *-usan)
2945         cc_default="${toolchain%-usan}"
2946         add_cflags  -fsanitize=undefined
2947         add_ldflags -fsanitize=undefined
2948         case "$toolchain" in
2949             clang-usan)
2950                 add_cflags -O1
2951                 ;;
2952         esac
2953     ;;
2954     valgrind-*)
2955         target_exec_default="valgrind"
2956         case "$toolchain" in
2957             valgrind-massif)
2958                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2959                 ;;
2960             valgrind-memcheck)
2961                 target_exec_args="--track-origins=yes --leak-check=full"
2962                 ;;
2963         esac
2964     ;;
2965     msvc)
2966         # Check whether the current MSVC version needs the C99 converter.
2967         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2968         # support enough of C99 to build libav. Default to the new
2969         # behaviour if the regexp was unable to match anything, since this
2970         # successfully parses the version number of existing supported
2971         # versions that require the converter (MSVC 2010 and 2012).
2972         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2973         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2974             cc_default="cl"
2975         else
2976             cc_default="c99wrap cl"
2977         fi
2978         ld_default="$source_path/compat/windows/mslink"
2979         nm_default="dumpbin -symbols"
2980         ar_default="lib"
2981         case "$arch" in
2982         arm*)
2983             as_default="armasm"
2984             ;;
2985         esac
2986         target_os_default="win32"
2987         # Use a relative path for TMPDIR. This makes sure all the
2988         # ffconf temp files are written with a relative path, avoiding
2989         # issues with msys/win32 path conversion for MSVC parameters
2990         # such as -Fo<file> or -out:<file>.
2991         TMPDIR=.
2992     ;;
2993     icl)
2994         cc_default="icl"
2995         ld_default="xilink"
2996         nm_default="dumpbin -symbols"
2997         ar_default="xilib"
2998         target_os_default="win32"
2999         TMPDIR=.
3000     ;;
3001     gcov)
3002         add_cflags  -fprofile-arcs -ftest-coverage
3003         add_ldflags -fprofile-arcs -ftest-coverage
3004     ;;
3005     llvm-cov)
3006         add_cflags -fprofile-arcs -ftest-coverage
3007         add_ldflags --coverage
3008     ;;
3009     hardened)
3010         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3011         add_cflags   -fno-strict-overflow -fstack-protector-all
3012         add_ldflags  -Wl,-z,relro -Wl,-z,now
3013     ;;
3014     ?*)
3015         die "Unknown toolchain $toolchain"
3016     ;;
3017 esac
3018
3019 test -n "$cross_prefix" && enable cross_compile
3020
3021 if enabled cross_compile; then
3022     test -n "$arch" && test -n "$target_os" ||
3023         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3024 fi
3025
3026 ar_default="${cross_prefix}${ar_default}"
3027 cc_default="${cross_prefix}${cc_default}"
3028 objcc_default="${cross_prefix}${objcc_default}"
3029 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3030 nm_default="${cross_prefix}${nm_default}"
3031 pkg_config_default="${cross_prefix}${pkg_config_default}"
3032 ranlib="${cross_prefix}${ranlib}"
3033 strip="${cross_prefix}${strip}"
3034
3035 sysinclude_default="${sysroot}/usr/include"
3036
3037 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3038 enabled cross_compile || host_cc_default=$cc
3039 set_default host_cc
3040
3041 if ! $pkg_config --version >/dev/null 2>&1; then
3042     warn "$pkg_config not found, library detection may fail."
3043     pkg_config=false
3044 fi
3045
3046 exesuf() {
3047     case $1 in
3048         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3049     esac
3050 }
3051
3052 EXESUF=$(exesuf $target_os)
3053 HOSTEXESUF=$(exesuf $host_os)
3054
3055 # set temporary file name
3056 : ${TMPDIR:=$TEMPDIR}
3057 : ${TMPDIR:=$TMP}
3058 : ${TMPDIR:=/tmp}
3059
3060 if ! check_cmd mktemp -u XXXXXX; then
3061     # simple replacement for missing mktemp
3062     # NOT SAFE FOR GENERAL USE
3063     mktemp(){
3064         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3065         echo "$tmpname"
3066         mkdir "$tmpname"
3067     }
3068 fi
3069
3070 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3071     die "Unable to create temporary directory in $TMPDIR."
3072
3073 tmpfile(){
3074     tmp="${AVTMPDIR}/test"$2
3075     (set -C; exec > $tmp) 2> /dev/null ||
3076         die "Unable to create temporary file in $AVTMPDIR."
3077     eval $1=$tmp
3078 }
3079
3080 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3081 trap 'exit 2' INT
3082
3083 tmpfile TMPASM .asm
3084 tmpfile TMPC   .c
3085 tmpfile TMPE   $EXESUF
3086 tmpfile TMPH   .h
3087 tmpfile TMPO   .o
3088 tmpfile TMPS   .S
3089 tmpfile TMPSH  .sh
3090 tmpfile TMPV   .ver
3091
3092 unset -f mktemp
3093
3094 chmod +x $TMPE
3095
3096 # make sure we can execute files in $TMPDIR
3097 cat > $TMPSH 2>> $logfile <<EOF
3098 #! /bin/sh
3099 EOF
3100 chmod +x $TMPSH >> $logfile 2>&1
3101 if ! $TMPSH >> $logfile 2>&1; then
3102     cat <<EOF
3103 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3104 variable to another directory and make sure that it is not mounted noexec.
3105 EOF
3106     die "Sanity test failed."
3107 fi
3108
3109 armasm_flags(){
3110     for flag; do
3111         case $flag in
3112             # Filter out MSVC cl.exe options from cflags that shouldn't
3113             # be passed to gas-preprocessor
3114             -M[TD]*)                                            ;;
3115             *)                  echo $flag                      ;;
3116         esac
3117    done
3118 }
3119
3120 ccc_flags(){
3121     for flag; do
3122         case $flag in
3123             -std=c99)           echo -c99                       ;;
3124             -mcpu=*)            echo -arch ${flag#*=}           ;;
3125             -mieee)             echo -ieee                      ;;
3126             -O*|-fast)          echo $flag                      ;;
3127             -fno-math-errno)    echo -assume nomath_errno       ;;
3128             -g)                 echo -g3                        ;;
3129             -Wall)              echo -msg_enable level2         ;;
3130             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3131             -Wl,*)              echo $flag                      ;;
3132             -f*|-W*)                                            ;;
3133             *)                  echo $flag                      ;;
3134         esac
3135    done
3136 }
3137
3138 cparser_flags(){
3139     for flag; do
3140         case $flag in
3141             -Wno-switch)             echo -Wno-switch-enum ;;
3142             -Wno-format-zero-length) ;;
3143             -Wdisabled-optimization) ;;
3144             -Wno-pointer-sign)       echo -Wno-other ;;
3145             *)                       echo $flag ;;
3146         esac
3147     done
3148 }
3149
3150 msvc_common_flags(){
3151     for flag; do
3152         case $flag in
3153             # In addition to specifying certain flags under the compiler
3154             # specific filters, they must be specified here as well or else the
3155             # generic catch all at the bottom will print the original flag.
3156             -Wall)                ;;
3157             -Wextra)              ;;
3158             -std=c99)             ;;
3159             # Common flags
3160             -fomit-frame-pointer) ;;
3161             -g)                   echo -Z7 ;;
3162             -fno-math-errno)      ;;
3163             -fno-common)          ;;
3164             -fno-signed-zeros)    ;;
3165             -fPIC)                ;;
3166             -mthumb)              ;;
3167             -march=*)             ;;
3168             -lz)                  echo zlib.lib ;;
3169             -lx264)               echo libx264.lib ;;
3170             -l*)                  echo ${flag#-l}.lib ;;
3171             -L*)                  echo -libpath:${flag#-L} ;;
3172             *)                    echo $flag ;;
3173         esac
3174     done
3175 }
3176
3177 msvc_flags(){
3178     msvc_common_flags "$@"
3179     for flag; do
3180         case $flag in
3181             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3182                                        -wd4554 ;;
3183             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3184                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3185                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3186                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3187         esac
3188     done
3189 }
3190
3191 icl_flags(){
3192     msvc_common_flags "$@"
3193     for flag; do
3194         case $flag in
3195             # Despite what Intel's documentation says -Wall, which is supported
3196             # on Windows, does enable remarks so disable them here.
3197             -Wall)                echo $flag -Qdiag-disable:remark ;;
3198             -std=c99)             echo -Qstd=c99 ;;
3199         esac
3200     done
3201 }
3202
3203 pgi_flags(){
3204     for flag; do
3205         case $flag in
3206             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3207             -fomit-frame-pointer) echo -Mnoframe ;;
3208             -g)                   echo -gopt ;;
3209             *)                    echo $flag ;;
3210         esac
3211     done
3212 }
3213
3214 suncc_flags(){
3215     for flag; do
3216         case $flag in
3217             -march=*|-mcpu=*)
3218                 case "${flag#*=}" in
3219                     native)                   echo -xtarget=native       ;;
3220                     v9|niagara)               echo -xarch=sparc          ;;
3221                     ultrasparc)               echo -xarch=sparcvis       ;;
3222                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3223                     i586|pentium)             echo -xchip=pentium        ;;
3224                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3225                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3226                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3227                     pentium4*)          echo -xtarget=pentium4           ;;
3228                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3229                     *-sse3)             echo -xarch=sse3                 ;;
3230                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3231                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3232                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3233                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3234                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3235                     k8|opteron|athlon64|athlon-fx)
3236                                                echo -xarch=sse2a         ;;
3237                     athlon*)                   echo -xarch=pentium_proa  ;;
3238                 esac
3239                 ;;
3240             -std=c99)             echo -xc99              ;;
3241             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3242             -fPIC)                echo -KPIC -xcode=pic32 ;;
3243             -W*,*)                echo $flag              ;;
3244             -f*-*|-W*|-mimpure-text)                      ;;
3245             -shared)              echo -G                 ;;
3246             *)                    echo $flag              ;;
3247         esac
3248     done
3249 }
3250
3251 tms470_flags(){
3252     for flag; do
3253         case $flag in
3254             -march=*|-mcpu=*)
3255                 case "${flag#*=}" in
3256                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3257                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3258                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3259                     armv6*|arm11*)          echo -mv=6   ;;
3260                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3261                                             echo -mv=5e  ;;
3262                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3263                 esac
3264                 ;;
3265             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3266             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3267             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3268             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3269             -msoft-float)   echo --float_support=vfplib       ;;
3270             -O[0-3]|-mf=*)  echo $flag                        ;;
3271             -g)             echo -g -mn                       ;;
3272             -pds=*)         echo $flag                        ;;
3273             -D*|-I*)        echo $flag                        ;;
3274             --gcc|--abi=*)  echo $flag                        ;;
3275             -me)            echo $flag                        ;;
3276         esac
3277     done
3278 }
3279
3280 probe_cc(){
3281     pfx=$1
3282     _cc=$2
3283
3284     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3285     unset _ld_o _ldflags _ld_lib _ld_path
3286     unset _depflags _DEPCMD _DEPFLAGS
3287     _flags_filter=echo
3288
3289     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3290         _type=llvm_gcc
3291         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3292         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3297         _type=gcc
3298         gcc_version=$($_cc --version | head -n1)
3299         gcc_basever=$($_cc -dumpversion)
3300         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3301         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3302         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3303         if ! $_cc -dumpversion | grep -q '^2\.'; then
3304             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         fi
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3309         _type=icc
3310         _ident=$($_cc --version | head -n1)
3311         _depflags='-MMD'
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314         _cflags_noopt='-O1'
3315     elif $_cc -v 2>&1 | grep -q xlc; then
3316         _type=xlc
3317         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3318         _cflags_speed='-O5'
3319         _cflags_size='-O5 -qcompact'
3320     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3321         _type=ccc
3322         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3323         _DEPFLAGS='-M'
3324         _cflags_speed='-fast'
3325         _cflags_size='-O1'
3326         _flags_filter=ccc_flags
3327     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3328         test -d "$sysroot" || die "No valid sysroot specified."
3329         _type=armcc
3330         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3331         armcc_conf="$PWD/armcc.conf"
3332         $_cc --arm_linux_configure                 \
3333              --arm_linux_config_file="$armcc_conf" \
3334              --configure_sysroot="$sysroot"        \
3335              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3336              die "Error creating armcc configuration file."
3337         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3338         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3339         as_default="${cross_prefix}gcc"
3340         _depflags='-MMD'
3341         _cflags_speed='-O3'
3342         _cflags_size='-Os'
3343     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3344         _type=tms470
3345         _ident=$($_cc -version | head -n1 | tr -s ' ')
3346         _flags='--gcc --abi=eabi -me'
3347         _cc_e='-ppl -fe=$@'
3348         _cc_o='-fe=$@'
3349         _depflags='-ppa -ppd=$(@:.o=.d)'
3350         _cflags_speed='-O3 -mf=5'
3351         _cflags_size='-O3 -mf=2'
3352         _flags_filter=tms470_flags
3353     elif $_cc -v 2>&1 | grep -q clang; then
3354         _type=clang
3355         _ident=$($_cc --version 2>/dev/null | head -n1)
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc -V 2>&1 | grep -q Sun; then
3360         _type=suncc
3361         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3362         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3363         _DEPFLAGS='-xM1 -xc99'
3364         _ldflags='-std=c99'
3365         _cflags_speed='-O5'
3366         _cflags_size='-O5 -xspace'
3367         _flags_filter=suncc_flags
3368     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3369         _type=pathscale
3370         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3372         _cflags_speed='-O2'
3373         _cflags_size='-Os'
3374         _flags_filter='filter_out -Wdisabled-optimization'
3375     elif $_cc -v 2>&1 | grep -q Open64; then
3376         _type=open64
3377         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3378         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3379         _cflags_speed='-O2'
3380         _cflags_size='-Os'
3381         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3382     elif $_cc -V 2>&1 | grep -q Portland; then
3383         _type=pgi
3384         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3385         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3386         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3387         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3388         _cflags_noopt="-O1"
3389         _flags_filter=pgi_flags
3390     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3391         _type=armasm
3392         _ident=$($_cc | head -n1)
3393         # 4509: "This form of conditional instruction is deprecated"
3394         _flags="-nologo -ignore 4509"
3395         _flags_filter=armasm_flags
3396     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3397         _type=msvc
3398         _ident=$($_cc 2>&1 | head -n1)
3399         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3400         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3401         _cflags_speed="-O2"
3402         _cflags_size="-O1"
3403         _cflags_noopt="-O1"
3404         if $_cc -nologo- 2>&1 | grep -q Linker; then
3405             _ld_o='-out:$@'
3406         else
3407             _ld_o='-Fe$@'
3408         fi
3409         _cc_o='-Fo$@'
3410         _cc_e='-P -Fi$@'
3411         _flags_filter=msvc_flags
3412         _ld_lib='lib%.a'
3413         _ld_path='-libpath:'
3414         _flags='-nologo'
3415     elif $_cc 2>&1 | grep -q Intel; then
3416         _type=icl
3417         _ident=$($_cc 2>&1 | head -n1)
3418         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3419         # Not only is O3 broken on 13.x+ but it is slower on all previous
3420         # versions (tested) as well.
3421         _cflags_speed="-O2"
3422         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3423         if $_cc 2>&1 | grep -q Linker; then
3424             _ld_o='-out:$@'
3425         else
3426             _ld_o='-Fe$@'
3427         fi
3428         _cc_o='-Fo$@'
3429         _cc_e='-P'
3430         _flags_filter=icl_flags
3431         _ld_lib='lib%.a'
3432         _ld_path='-libpath:'
3433         # -Qdiag-error to make icl error when seeing certain unknown arguments
3434         _flags='-nologo -Qdiag-error:4044,10157'
3435         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3436         # with MSVC which enables it by default.
3437         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3438     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3439         # lld can emulate multiple different linkers; in ms link.exe mode,
3440         # the -? parameter gives the help output which contains an identifyable
3441         # string, while it gives an error in other modes.
3442         _type=lld-link
3443         # The link.exe mode doesn't have a switch for getting the version,
3444         # but we can force it back to gnu mode and get the version from there.
3445         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3446         _ld_o='-out:$@'
3447         _flags_filter=msvc_flags
3448         _ld_lib='lib%.a'
3449         _ld_path='-libpath:'
3450     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3451         _type=cparser
3452         _ident=$($_cc --version | head -n1)
3453         _depflags='-MMD'
3454         _cflags_speed='-O4'
3455         _cflags_size='-O2'
3456         _flags_filter=cparser_flags
3457     fi
3458
3459     eval ${pfx}_type=\$_type
3460     eval ${pfx}_ident=\$_ident
3461 }
3462
3463 set_ccvars(){
3464     eval ${1}_C=\${_cc_c-\${${1}_C}}
3465     eval ${1}_E=\${_cc_e-\${${1}_E}}
3466     eval ${1}_O=\${_cc_o-\${${1}_O}}
3467
3468     if [ -n "$_depflags" ]; then
3469         eval ${1}_DEPFLAGS=\$_depflags
3470     else
3471         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3472         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3473         eval DEP${1}FLAGS=\$_flags
3474     fi
3475 }
3476
3477 probe_cc cc "$cc"
3478 cflags_filter=$_flags_filter
3479 cflags_speed=$_cflags_speed
3480 cflags_size=$_cflags_size
3481 cflags_noopt=$_cflags_noopt
3482 add_cflags $_flags $_cflags
3483 cc_ldflags=$_ldflags
3484 set_ccvars CC
3485
3486 probe_cc hostcc "$host_cc"
3487 host_cflags_filter=$_flags_filter
3488 host_cflags_speed=$_cflags_speed
3489 add_host_cflags  $_flags $_cflags
3490 set_ccvars HOSTCC
3491
3492 test -n "$cc_type" && enable $cc_type ||
3493     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3494
3495 : ${as_default:=$cc}
3496 : ${objcc_default:=$cc}
3497 : ${dep_cc_default:=$cc}
3498 : ${ld_default:=$cc}
3499 : ${host_ld_default:=$host_cc}
3500 set_default ar as objcc dep_cc ld host_ld
3501
3502 probe_cc as "$as"
3503 asflags_filter=$_flags_filter
3504 add_asflags $_flags $_cflags
3505 set_ccvars AS
3506
3507 probe_cc objcc "$objcc"
3508 objcflags_filter=$_flags_filter
3509 add_objcflags $_flags $_cflags
3510 set_ccvars OBJC
3511
3512 probe_cc ld "$ld"
3513 ldflags_filter=$_flags_filter
3514 add_ldflags $_flags $_ldflags
3515 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3516 LD_O=${_ld_o-$LD_O}
3517 LD_LIB=${_ld_lib-$LD_LIB}
3518 LD_PATH=${_ld_path-$LD_PATH}
3519
3520 probe_cc hostld "$host_ld"
3521 host_ldflags_filter=$_flags_filter
3522 add_host_ldflags $_flags $_ldflags
3523 HOSTLD_O=${_ld_o-$HOSTLD_O}
3524
3525 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3526     probe_cc depcc "$dep_cc"
3527     CCDEP=${_DEPCMD:-$DEPCMD}
3528     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3529     DEPCCFLAGS=$_flags
3530 fi
3531
3532 if $ar 2>&1 | grep -q Microsoft; then
3533     arflags="-nologo"
3534     ar_o='-out:$@'
3535 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3536     arflags="rq"
3537     ar_o='$@'
3538 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3539     arflags='-Xany -r -c'
3540     ar_o='$@'
3541 else
3542     arflags="rc"
3543     ar_o='$@'
3544 fi
3545
3546 add_cflags $extra_cflags
3547 add_objcflags $extra_objcflags
3548 add_asflags $extra_cflags
3549
3550 if test -n "$sysroot"; then
3551     case "$cc_type" in
3552         gcc|llvm_gcc|clang)
3553             add_cppflags --sysroot="$sysroot"
3554             add_ldflags --sysroot="$sysroot"
3555         ;;
3556         tms470)
3557             add_cppflags -I"$sysinclude"
3558             add_ldflags  --sysroot="$sysroot"
3559         ;;
3560     esac
3561 fi
3562
3563 if test "$cpu" = host; then
3564     enabled cross_compile &&
3565         die "--cpu=host makes no sense when cross-compiling."
3566
3567     case "$cc_type" in
3568         gcc|llvm_gcc)
3569             check_native(){
3570                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3571                 sed -n "/cc1.*$1=/{
3572                             s/.*$1=\\([^ ]*\\).*/\\1/
3573                             p
3574                             q
3575                         }" $TMPE
3576             }
3577             cpu=$(check_native -march || check_native -mcpu)
3578         ;;
3579     esac
3580
3581     test "${cpu:-host}" = host &&
3582         die "--cpu=host not supported with compiler $cc"
3583 fi
3584
3585 # Deal with common $arch aliases
3586 case "$arch" in
3587     aarch64|arm64)
3588         arch="aarch64"
3589     ;;
3590     arm*)
3591         arch="arm"
3592     ;;
3593     mips*|IP*)
3594         case "$arch" in
3595         *el)
3596             add_cppflags -EL
3597             add_ldflags -EL
3598         ;;
3599         *eb)
3600             add_cppflags -EB
3601             add_ldflags -EB
3602         ;;
3603         esac
3604         arch="mips"
3605     ;;
3606     parisc*|hppa*)
3607         arch="parisc"
3608     ;;
3609     "Power Macintosh"|ppc*|powerpc*)
3610         arch="ppc"
3611     ;;
3612     s390|s390x)
3613         arch="s390"
3614     ;;
3615     sh4|sh)
3616         arch="sh4"
3617     ;;
3618     sun4u|sparc*)
3619         arch="sparc"
3620     ;;
3621     tilegx|tile-gx)
3622         arch="tilegx"
3623     ;;
3624     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3625         arch="x86"
3626     ;;
3627 esac
3628
3629 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3630 enable $arch
3631
3632 # Add processor-specific flags
3633 if enabled aarch64; then
3634
3635     case $cpu in
3636         armv*)
3637             cpuflags="-march=$cpu"
3638         ;;
3639         *)
3640             cpuflags="-mcpu=$cpu"
3641         ;;
3642     esac
3643
3644 elif enabled alpha; then
3645
3646     cpuflags="-mcpu=$cpu"
3647
3648 elif enabled arm; then
3649
3650     check_arm_arch() {
3651         check_cpp_condition stddef.h \
3652             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3653             $cpuflags
3654     }
3655
3656     probe_arm_arch() {
3657         if   check_arm_arch 4;        then echo armv4
3658         elif check_arm_arch 4T;       then echo armv4t
3659         elif check_arm_arch 5;        then echo armv5
3660         elif check_arm_arch 5E;       then echo armv5e
3661         elif check_arm_arch 5T;       then echo armv5t
3662         elif check_arm_arch 5TE;      then echo armv5te
3663         elif check_arm_arch 5TEJ;     then echo armv5te
3664         elif check_arm_arch 6;        then echo armv6
3665         elif check_arm_arch 6J;       then echo armv6j
3666         elif check_arm_arch 6K;       then echo armv6k
3667         elif check_arm_arch 6Z;       then echo armv6z
3668         elif check_arm_arch 6ZK;      then echo armv6zk
3669         elif check_arm_arch 6T2;      then echo armv6t2
3670         elif check_arm_arch 7;        then echo armv7
3671         elif check_arm_arch 7A  7_A;  then echo armv7-a
3672         elif check_arm_arch 7S;       then echo armv7-a
3673         elif check_arm_arch 7R  7_R;  then echo armv7-r
3674         elif check_arm_arch 7M  7_M;  then echo armv7-m
3675         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3676         elif check_arm_arch 8A  8_A;  then echo armv8-a
3677         fi
3678     }
3679
3680     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3681
3682     case $cpu in
3683         armv*)
3684             cpuflags="-march=$cpu"
3685             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3686         ;;
3687         *)
3688             cpuflags="-mcpu=$cpu"
3689             case $cpu in
3690                 cortex-a*)                               subarch=armv7a  ;;
3691                 cortex-r*)                               subarch=armv7r  ;;
3692                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3693                 arm11*)                                  subarch=armv6   ;;
3694                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3695                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3696                 *)                             subarch=$(probe_arm_arch) ;;
3697             esac
3698         ;;
3699     esac
3700
3701     case "$subarch" in
3702         armv5t*)    enable fast_clz                ;;
3703         armv[6-8]*) enable fast_clz fast_unaligned ;;
3704     esac
3705
3706 elif enabled avr32; then
3707
3708     case $cpu in
3709         ap7[02]0[0-2])
3710             subarch="avr32_ap"
3711             cpuflags="-mpart=$cpu"
3712         ;;
3713         ap)
3714             subarch="avr32_ap"
3715             cpuflags="-march=$cpu"
3716         ;;
3717         uc3[ab]*)
3718             subarch="avr32_uc"
3719             cpuflags="-mcpu=$cpu"
3720         ;;
3721         uc)
3722             subarch="avr32_uc"
3723             cpuflags="-march=$cpu"
3724         ;;
3725     esac
3726
3727 elif enabled bfin; then
3728
3729     cpuflags="-mcpu=$cpu"
3730
3731 elif enabled mips; then
3732
3733     cpuflags="-march=$cpu"
3734
3735 elif enabled ppc; then
3736
3737     disable ldbrx
3738
3739     case $(tolower $cpu) in
3740         601|ppc601|powerpc601)
3741             cpuflags="-mcpu=601"
3742             disable altivec
3743         ;;
3744         603*|ppc603*|powerpc603*)
3745             cpuflags="-mcpu=603"
3746             disable altivec
3747         ;;
3748         604*|ppc604*|powerpc604*)
3749             cpuflags="-mcpu=604"
3750             disable altivec
3751         ;;
3752         g3|75*|ppc75*|powerpc75*)
3753             cpuflags="-mcpu=750"
3754             disable altivec
3755         ;;
3756         g4|745*|ppc745*|powerpc745*)
3757             cpuflags="-mcpu=7450"
3758             disable vsx
3759         ;;
3760         74*|ppc74*|powerpc74*)
3761             cpuflags="-mcpu=7400"
3762             disable vsx
3763         ;;
3764         g5|970|ppc970|powerpc970)
3765             cpuflags="-mcpu=970"
3766             disable vsx
3767         ;;
3768         power[3-6]*)
3769             cpuflags="-mcpu=$cpu"
3770             disable vsx
3771         ;;
3772         power[7-8]*)
3773             cpuflags="-mcpu=$cpu"
3774             enable ldbrx
3775         ;;
3776         cell)
3777             cpuflags="-mcpu=cell"
3778             enable ldbrx
3779             disable vsx
3780         ;;
3781         e500mc)
3782             cpuflags="-mcpu=e500mc"
3783             disable altivec
3784         ;;
3785         e500v2)
3786             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3787             disable altivec
3788             disable dcbzl
3789         ;;
3790         e500)
3791             cpuflags="-mcpu=8540 -mhard-float"
3792             disable altivec
3793             disable dcbzl
3794         ;;
3795     esac
3796
3797 elif enabled sparc; then
3798
3799     case $cpu in
3800         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3801             cpuflags="-mcpu=$cpu"
3802         ;;
3803         ultrasparc*|niagara[234])
3804             cpuflags="-mcpu=$cpu"
3805         ;;
3806     esac
3807
3808 elif enabled x86; then
3809
3810     case $cpu in
3811         i[345]86|pentium)
3812             cpuflags="-march=$cpu"
3813             disable i686
3814             disable mmx
3815         ;;
3816         # targets that do NOT support nopl and conditional mov (cmov)
3817         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3818             cpuflags="-march=$cpu"
3819             disable i686
3820         ;;
3821         # targets that do support nopl and conditional mov (cmov)
3822         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3823             cpuflags="-march=$cpu"
3824             enable i686
3825             enable fast_cmov
3826         ;;
3827         # targets that do support conditional mov but on which it's slow
3828         pentium4|pentium4m|prescott|nocona)
3829             cpuflags="-march=$cpu"
3830             enable i686
3831             disable fast_cmov
3832         ;;
3833     esac
3834
3835 fi
3836
3837 if [ "$cpu" != generic ]; then
3838     add_cflags  $cpuflags
3839     add_asflags $cpuflags
3840     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3841 fi
3842
3843 # compiler sanity check
3844 check_exec <<EOF
3845 int main(void){ return 0; }
3846 EOF
3847 if test "$?" != 0; then
3848     echo "$cc is unable to create an executable file."
3849     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3850         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3851         echo "Only do this if you know what cross compiling means."
3852     fi
3853     die "C compiler test failed."
3854 fi
3855
3856 add_cppflags -D_ISOC99_SOURCE
3857
3858 # some compilers silently accept -std=c11, so we also need to check that the
3859 # version macro is defined properly
3860 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3861     add_cflags -std=c11 ||
3862     check_cflags -std=c99
3863
3864 check_cppflags -D_FILE_OFFSET_BITS=64
3865 check_cppflags -D_LARGEFILE_SOURCE
3866
3867 add_host_cppflags -D_ISOC99_SOURCE
3868 check_host_cflags -std=c99
3869 check_host_cflags -Wall
3870 check_host_cflags $host_cflags_speed
3871
3872 check_64bit(){
3873     arch32=$1
3874     arch64=$2
3875     expr=$3
3876     check_code cc "" "int test[2*($expr) - 1]" &&
3877         subarch=$arch64 || subarch=$arch32
3878 }
3879
3880 case "$arch" in
3881     aarch64|alpha|ia64)
3882         spic=$shared
3883     ;;
3884     mips)
3885         check_64bit mips mips64 '_MIPS_SIM > 1'
3886         spic=$shared
3887     ;;
3888     parisc)
3889         check_64bit parisc parisc64 'sizeof(void *) > 4'
3890         spic=$shared
3891     ;;
3892     ppc)
3893         check_64bit ppc ppc64 'sizeof(void *) > 4'
3894         spic=$shared
3895     ;;
3896     s390)
3897         check_64bit s390 s390x 'sizeof(void *) > 4'
3898         spic=$shared
3899     ;;
3900     sparc)
3901         check_64bit sparc sparc64 'sizeof(void *) > 4'
3902         spic=$shared
3903     ;;
3904     x86)
3905         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3906         if test "$subarch" = "x86_64"; then
3907             spic=$shared
3908         fi
3909     ;;
3910 esac
3911
3912 enable $subarch
3913 enabled spic && enable_weak pic
3914
3915 enabled x86_64 && objformat=elf64 || objformat="elf32"
3916
3917 # OS specific
3918 case $target_os in
3919     aix)
3920         SHFLAGS=-shared
3921         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3922         enabled shared && add_ldflags -Wl,-brtl
3923         ;;
3924     android)
3925         disable symver
3926         enable section_data_rel_ro
3927         SLIB_INSTALL_NAME='$(SLIBNAME)'
3928         SLIB_INSTALL_LINKS=
3929         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3930         ;;
3931     haiku)
3932         prefix_default="/boot/common"
3933         network_extralibs="-lnetwork"
3934         host_extralibs=
3935         ;;
3936     sunos)
3937         SHFLAGS='-shared -Wl,-h,$$(@F)'
3938         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3939         network_extralibs="-lsocket -lnsl"
3940         # When using suncc to build, the Solaris linker will mark
3941         # an executable with each instruction set encountered by
3942         # the Solaris assembler.  As our libraries contain their own
3943         # guards for processor-specific code, instead suppress
3944         # generation of the HWCAPS ELF section on Solaris x86 only.
3945         enabled_all suncc x86 &&
3946             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3947             add_ldflags -Wl,-M,mapfile
3948         nm_default='nm -P -g'
3949         version_script='-M'
3950         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3951         ;;
3952     netbsd)
3953         disable symver
3954         oss_indev_extralibs="-lossaudio"
3955         oss_outdev_extralibs="-lossaudio"
3956         ;;
3957     openbsd|bitrig)
3958         disable symver
3959         SHFLAGS='-shared'
3960         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3961         SLIB_INSTALL_LINKS=
3962         oss_indev_extralibs="-lossaudio"
3963         oss_outdev_extralibs="-lossaudio"
3964         ;;
3965     dragonfly)
3966         disable symver
3967         ;;
3968     freebsd)
3969         ;;
3970     bsd/os)
3971         add_extralibs -lpoll -lgnugetopt
3972         ;;
3973     darwin)
3974         enabled ppc && add_asflags -force_cpusubtype_ALL
3975         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3976         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3977         add_ldflags -Wl,-dynamic,-search_paths_first
3978         check_cflags -Werror=partial-availability
3979         SLIBSUF=".dylib"
3980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3982         enabled x86_64 && objformat="macho64" || objformat="macho32"
3983         enabled_any pic shared ||
3984             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3985         check_header dispatch/dispatch.h &&
3986             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3987         ;;
3988     msys*)
3989         die "Native MSYS builds are discouraged, please use the MINGW environment."
3990         ;;
3991     mingw32*|mingw64*)
3992         if test $target_os = "mingw32ce"; then
3993             disable network
3994         else
3995             target_os=mingw32
3996         fi
3997         LIBTARGET=i386
3998         if enabled x86_64; then
3999             LIBTARGET="i386:x86-64"
4000         elif enabled arm; then
4001             LIBTARGET=arm-wince
4002         fi
4003         check_ldflags -Wl,--nxcompat
4004         check_ldflags -Wl,--dynamicbase
4005         shlibdir_default="$bindir_default"
4006         SLIBPREF=""
4007         SLIBSUF=".dll"
4008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4010         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4012         SLIB_INSTALL_LINKS=
4013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4014         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4015         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4016         enabled x86_64 && objformat="win64" || objformat="win32"
4017         dlltool="${cross_prefix}dlltool"
4018         ranlib=:
4019         enable dos_paths
4020         ;;
4021     win32|win64)
4022         disable symver
4023         if enabled shared; then
4024             # Link to the import library instead of the normal static library
4025             # for shared libs.
4026             LD_LIB='%.lib'
4027             # Cannot build both shared and static libs with MSVC or icl.
4028             disable static
4029         fi
4030         shlibdir_default="$bindir_default"
4031         SLIBPREF=""
4032         SLIBSUF=".dll"
4033         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4034         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4035         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4036         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4037         SLIB_INSTALL_LINKS=
4038         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4039         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4040         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4041         enabled x86_64 && objformat="win64" || objformat="win32"
4042         ranlib=:
4043         enable dos_paths
4044         ;;
4045     cygwin*)
4046         target_os=cygwin
4047         shlibdir_default="$bindir_default"
4048         SLIBPREF="cyg"
4049         SLIBSUF=".dll"
4050         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4051         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4052         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4053         SLIB_INSTALL_LINKS=
4054         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4055         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4056         enabled x86_64 && objformat="win64" || objformat="win32"
4057         enable dos_paths
4058         ;;
4059     *-dos|freedos|opendos)
4060         network_extralibs="-lsocket"
4061         objformat="coff"
4062         enable dos_paths
4063         add_cppflags -U__STRICT_ANSI__
4064         ;;
4065     linux)
4066         enable dv1394
4067         enable section_data_rel_ro
4068         ;;
4069     irix*)
4070         target_os=irix
4071         ranlib="echo ignoring ranlib"
4072         ;;
4073     os/2*)
4074         ln_s="cp -f"
4075         objformat="aout"
4076         add_cppflags -D_GNU_SOURCE
4077         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4078         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4079         LIBSUF="_s.a"
4080         SLIBPREF=""
4081         SLIBSUF=".dll"
4082         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4083         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4084         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4085             echo CODE PRELOAD MOVEABLE DISCARDABLE&n