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[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     altivec_h
1551     arpa_inet_h
1552     cdio_paranoia_h
1553     cdio_paranoia_paranoia_h
1554     d3d11_h
1555     dispatch_dispatch_h
1556     dev_bktr_ioctl_bt848_h
1557     dev_bktr_ioctl_meteor_h
1558     dev_ic_bt8xx_h
1559     dev_video_bktr_ioctl_bt848_h
1560     dev_video_meteor_ioctl_meteor_h
1561     direct_h
1562     dlfcn_h
1563     dxva_h
1564     gsm_h
1565     io_h
1566     mach_mach_time_h
1567     machine_ioctl_bt848_h
1568     machine_ioctl_meteor_h
1569     malloc_h
1570     poll_h
1571     sndio_h
1572     soundcard_h
1573     stdatomic_h
1574     sys_mman_h
1575     sys_param_h
1576     sys_resource_h
1577     sys_select_h
1578     sys_soundcard_h
1579     sys_time_h
1580     sys_un_h
1581     sys_videoio_h
1582     unistd_h
1583     valgrind_valgrind_h
1584     windows_h
1585     winsock2_h
1586 "
1587
1588 INTRINSICS_LIST="
1589     intrinsics_neon
1590 "
1591
1592 MATH_FUNCS="
1593     atanf
1594     atan2f
1595     cbrtf
1596     cosf
1597     exp2
1598     exp2f
1599     expf
1600     isinf
1601     isnan
1602     ldexpf
1603     llrint
1604     llrintf
1605     log2
1606     log2f
1607     log10f
1608     lrint
1609     lrintf
1610     powf
1611     rint
1612     round
1613     roundf
1614     sinf
1615     trunc
1616     truncf
1617 "
1618
1619 SYSTEM_FUNCS="
1620     aligned_malloc
1621     clock_gettime
1622     closesocket
1623     CommandLineToArgvW
1624     CoTaskMemFree
1625     CryptGenRandom
1626     fcntl
1627     flt_lim
1628     fork
1629     getaddrinfo
1630     gethrtime
1631     getopt
1632     GetProcessAffinityMask
1633     GetProcessMemoryInfo
1634     GetProcessTimes
1635     getrusage
1636     GetSystemTimeAsFileTime
1637     gettimeofday
1638     gmtime_r
1639     inet_aton
1640     isatty
1641     LoadLibrary
1642     localtime_r
1643     mach_absolute_time
1644     MapViewOfFile
1645     memalign
1646     mkstemp
1647     mmap
1648     mprotect
1649     nanosleep
1650     posix_memalign
1651     sched_getaffinity
1652     SetConsoleTextAttribute
1653     setmode
1654     setrlimit
1655     Sleep
1656     strerror_r
1657     sysconf
1658     sysctl
1659     usleep
1660     VirtualAlloc
1661 "
1662
1663 TOOLCHAIN_FEATURES="
1664     as_arch_directive
1665     as_fpu_directive
1666     as_func
1667     as_object_arch
1668     asm_mod_q
1669     attribute_may_alias
1670     attribute_packed
1671     blocks_extension
1672     ebp_available
1673     ebx_available
1674     gnu_as
1675     ibm_asm
1676     inline_asm_labels
1677     pragma_deprecated
1678     symver_asm_label
1679     symver_gnu_asm
1680     vfp_args
1681     xform_asm
1682     xmm_clobbers
1683 "
1684
1685 TYPES_LIST="
1686     CONDITION_VARIABLE_Ptr
1687     socklen_t
1688     struct_addrinfo
1689     struct_group_source_req
1690     struct_ip_mreq_source
1691     struct_ipv6_mreq
1692     struct_pollfd
1693     struct_rusage_ru_maxrss
1694     struct_sockaddr_in6
1695     struct_sockaddr_sa_len
1696     struct_sockaddr_storage
1697     struct_v4l2_frmivalenum_discrete
1698 "
1699
1700 HAVE_LIST="
1701     $ARCH_EXT_LIST
1702     $(add_suffix _external $ARCH_EXT_LIST)
1703     $(add_suffix _inline   $ARCH_EXT_LIST)
1704     $ARCH_FEATURES
1705     $BUILTIN_LIST
1706     $HAVE_LIST_CMDLINE
1707     $HAVE_LIST_PUB
1708     $HEADERS_LIST
1709     $INTRINSICS_LIST
1710     $MATH_FUNCS
1711     $SYSTEM_FUNCS
1712     $THREADS_LIST
1713     $TOOLCHAIN_FEATURES
1714     $TYPES_LIST
1715     dos_paths
1716     dxva2_lib
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     vaapi_drm
1723     vaapi_x11
1724     vdpau_x11
1725 "
1726
1727 # options emitted with CONFIG_ prefix but not available on the command line
1728 CONFIG_EXTRA="
1729     aandcttables
1730     ac3dsp
1731     adts_header
1732     audio_frame_queue
1733     audiodsp
1734     blockdsp
1735     bswapdsp
1736     cabac
1737     dirac_parse
1738     dvprofile
1739     faandct
1740     faanidct
1741     fdctdsp
1742     flacdsp
1743     fmtconvert
1744     g722dsp
1745     gmp
1746     golomb
1747     gplv3
1748     h263dsp
1749     h264chroma
1750     h264dsp
1751     h264parse
1752     h264pred
1753     h264qpel
1754     hevc_ps
1755     hpeldsp
1756     huffman
1757     huffyuvdsp
1758     huffyuvencdsp
1759     idctdsp
1760     iirfilter
1761     imdct15
1762     intrax8
1763     iso_media
1764     ividsp
1765     jpegtables
1766     lgplv3
1767     libx262
1768     libxcb_shape
1769     lpc
1770     lzf
1771     me_cmp
1772     mpeg_er
1773     mpegaudio
1774     mpegaudiodsp
1775     mpegaudioheader
1776     mpegvideo
1777     mpegvideoenc
1778     mss34dsp
1779     pixblockdsp
1780     qpeldsp
1781     qsv
1782     qsvdec
1783     qsvenc
1784     rangecoder
1785     riffdec
1786     riffenc
1787     rtpdec
1788     rtpenc_chain
1789     rv34dsp
1790     sinewin
1791     snappy
1792     srtp
1793     startcode
1794     texturedsp
1795     texturedspenc
1796     tpeldsp
1797     vaapi_encode
1798     vc1dsp
1799     videodsp
1800     vp3dsp
1801     vp56dsp
1802     vp8dsp
1803     wma_freqs
1804     wmv2dsp
1805 "
1806
1807 CMDLINE_SELECT="
1808     $ARCH_EXT_LIST
1809     $CONFIG_LIST
1810     $HAVE_LIST_CMDLINE
1811     $THREADS_LIST
1812     asm
1813     cross_compile
1814     debug
1815     extra_warnings
1816     logging
1817     lto
1818     optimizations
1819     rpath
1820 "
1821
1822 PATHS_LIST="
1823     bindir
1824     datadir
1825     docdir
1826     incdir
1827     libdir
1828     mandir
1829     prefix
1830     shlibdir
1831 "
1832
1833 CMDLINE_SET="
1834     $PATHS_LIST
1835     ar
1836     arch
1837     as
1838     cc
1839     objcc
1840     cpu
1841     cross_prefix
1842     custom_allocator
1843     dep_cc
1844     env
1845     extra_version
1846     host_cc
1847     host_cflags
1848     host_extralibs
1849     host_ld
1850     host_ldflags
1851     host_os
1852     ignore_tests
1853     ld
1854     logfile
1855     malloc_prefix
1856     nm
1857     optflags
1858     pkg_config
1859     pkg_config_flags
1860     random_seed
1861     samples
1862     sysinclude
1863     sysroot
1864     target_exec
1865     target_os
1866     target_path
1867     target_samples
1868     toolchain
1869     x86asmexe
1870 "
1871
1872 CMDLINE_APPEND="
1873     extra_cflags
1874     extra_objcflags
1875     host_cppflags
1876 "
1877
1878 # code dependency declarations
1879
1880 # architecture extensions
1881
1882 armv5te_deps="arm"
1883 armv6_deps="arm"
1884 armv6t2_deps="arm"
1885 armv8_deps="aarch64"
1886 neon_deps_any="aarch64 arm"
1887 intrinsics_neon_deps="neon"
1888 vfp_deps_any="aarch64 arm"
1889 vfpv3_deps="vfp"
1890
1891 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1892
1893 altivec_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 cpunop_deps="i686"
1899 x86_64_select="i686"
1900 x86_64_suggest="fast_cmov"
1901
1902 amd3dnow_deps="mmx"
1903 amd3dnowext_deps="amd3dnow"
1904 i686_deps="x86"
1905 mmx_deps="x86"
1906 mmxext_deps="mmx"
1907 sse_deps="mmxext"
1908 sse2_deps="sse"
1909 sse3_deps="sse2"
1910 ssse3_deps="sse3"
1911 sse4_deps="ssse3"
1912 sse42_deps="sse4"
1913 avx_deps="sse42"
1914 xop_deps="avx"
1915 fma3_deps="avx"
1916 fma4_deps="avx"
1917 avx2_deps="avx"
1918
1919 mmx_external_deps="x86asm"
1920 mmx_inline_deps="inline_asm"
1921 mmx_suggest="mmx_external mmx_inline"
1922
1923 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1924     eval dep=\$${ext}_deps
1925     eval ${ext}_external_deps='"${dep}_external"'
1926     eval ${ext}_inline_deps='"${dep}_inline"'
1927     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1928 done
1929
1930 aligned_stack_if_any="aarch64 ppc x86"
1931 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1932 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1933 fast_unaligned_if_any="aarch64 ppc x86"
1934 simd_align_16_if_any="altivec neon sse"
1935 simd_align_32_if_any="avx"
1936
1937 # system capabilities
1938 symver_if_any="symver_asm_label symver_gnu_asm"
1939 valgrind_backtrace_conflict="optimizations"
1940 valgrind_backtrace_deps="valgrind_valgrind_h"
1941
1942 # threading support
1943 atomics_gcc_if="sync_val_compare_and_swap"
1944 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1945 atomics_win32_if="MemoryBarrier"
1946 atomics_native_if_any="$ATOMICS_LIST"
1947 w32threads_deps="atomics_native"
1948 threads_if_any="$THREADS_LIST"
1949
1950 # subsystems
1951 dct_select="rdft"
1952 dirac_parse_select="golomb"
1953 error_resilience_select="me_cmp"
1954 faandct_deps="faan fdctdsp"
1955 faanidct_deps="faan idctdsp"
1956 h264dsp_select="startcode"
1957 hevc_ps_select="golomb"
1958 intrax8_select="blockdsp idctdsp"
1959 mdct_select="fft"
1960 rdft_select="fft"
1961 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1962 mpeg_er_select="error_resilience"
1963 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1964 mpegaudiodsp_select="dct"
1965 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1966 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1967 vc1dsp_select="h264chroma qpeldsp startcode"
1968
1969 # decoders / encoders
1970 aac_decoder_select="adts_header imdct15 mdct sinewin"
1971 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1972 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1973 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1974 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1976 adpcm_g722_decoder_select="g722dsp"
1977 adpcm_g722_encoder_select="g722dsp"
1978 aic_decoder_select="golomb idctdsp"
1979 alac_encoder_select="lpc"
1980 als_decoder_select="bswapdsp"
1981 amrnb_decoder_select="lsp"
1982 amrwb_decoder_select="lsp"
1983 amv_decoder_select="sp5x_decoder"
1984 ape_decoder_select="bswapdsp"
1985 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1988 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1989 atrac1_decoder_select="mdct sinewin"
1990 atrac3_decoder_select="mdct"
1991 atrac3p_decoder_select="mdct sinewin"
1992 bink_decoder_select="blockdsp hpeldsp"
1993 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1994 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1995 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1996 cllc_decoder_select="bswapdsp"
1997 comfortnoise_encoder_select="lpc"
1998 cook_decoder_select="audiodsp mdct sinewin"
1999 cscd_decoder_select="lzo"
2000 cscd_decoder_suggest="zlib"
2001 dca_decoder_select="fmtconvert mdct"
2002 dds_decoder_select="texturedsp"
2003 dnxhd_decoder_select="blockdsp idctdsp"
2004 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2005 dvvideo_decoder_select="dvprofile idctdsp"
2006 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2007 dxa_decoder_deps="zlib"
2008 dxv_decoder_select="lzf texturedsp"
2009 eac3_decoder_select="ac3_decoder"
2010 eac3_encoder_select="ac3_encoder"
2011 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2012 eatgq_decoder_select="aandcttables idctdsp"
2013 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2014 exr_decoder_deps="zlib"
2015 ffv1_decoder_select="rangecoder"
2016 ffv1_encoder_select="rangecoder"
2017 ffvhuff_decoder_select="huffyuv_decoder"
2018 ffvhuff_encoder_select="huffyuv_encoder"
2019 fic_decoder_select="golomb"
2020 flac_decoder_select="flacdsp"
2021 flac_encoder_select="bswapdsp flacdsp lpc"
2022 flashsv_decoder_deps="zlib"
2023 flashsv_encoder_deps="zlib"
2024 flashsv2_decoder_deps="zlib"
2025 flv_decoder_select="h263_decoder"
2026 flv_encoder_select="h263_encoder"
2027 fourxm_decoder_select="blockdsp bswapdsp"
2028 fraps_decoder_select="bswapdsp huffman"
2029 g2m_decoder_deps="zlib"
2030 g2m_decoder_select="blockdsp idctdsp jpegtables"
2031 h261_decoder_select="mpeg_er mpegvideo"
2032 h261_encoder_select="aandcttables mpegvideoenc"
2033 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2034 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2035 h263i_decoder_select="h263_decoder"
2036 h263p_encoder_select="h263_encoder"
2037 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2038 h264_decoder_suggest="error_resilience"
2039 hap_decoder_select="snappy texturedsp"
2040 hap_encoder_deps="libsnappy"
2041 hap_encoder_select="texturedspenc"
2042 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2043 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2044 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2045 iac_decoder_select="imc_decoder"
2046 imc_decoder_select="bswapdsp fft mdct sinewin"
2047 indeo3_decoder_select="hpeldsp"
2048 indeo4_decoder_select="ividsp"
2049 indeo5_decoder_select="ividsp"
2050 interplay_video_decoder_select="hpeldsp"
2051 jpegls_decoder_select="mjpeg_decoder"
2052 jv_decoder_select="blockdsp"
2053 lagarith_decoder_select="huffyuvdsp"
2054 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2055 magicyuv_decoder_select="huffyuvdsp"
2056 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2057 metasound_decoder_select="lsp mdct sinewin"
2058 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2059 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2060 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2061 mjpegb_decoder_select="mjpeg_decoder"
2062 mlp_decoder_select="mlp_parser"
2063 motionpixels_decoder_select="bswapdsp"
2064 mp1_decoder_select="mpegaudio"
2065 mp1float_decoder_select="mpegaudio"
2066 mp2_decoder_select="mpegaudio"
2067 mp2float_decoder_select="mpegaudio"
2068 mp3_decoder_select="mpegaudio"
2069 mp3adu_decoder_select="mpegaudio"
2070 mp3adufloat_decoder_select="mpegaudio"
2071 mp3float_decoder_select="mpegaudio"
2072 mp3on4_decoder_select="mpegaudio"
2073 mp3on4float_decoder_select="mpegaudio"
2074 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2075 mpc8_decoder_select="mpegaudiodsp"
2076 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2077 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2078 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2079 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2080 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2081 mpeg4_encoder_select="h263_encoder"
2082 msa1_decoder_select="mss34dsp"
2083 msmpeg4v1_decoder_select="h263_decoder"
2084 msmpeg4v2_decoder_select="h263_decoder"
2085 msmpeg4v2_encoder_select="h263_encoder"
2086 msmpeg4v3_decoder_select="h263_decoder"
2087 msmpeg4v3_encoder_select="h263_encoder"
2088 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2089 mts2_decoder_select="mss34dsp"
2090 mxpeg_decoder_select="mjpeg_decoder"
2091 nellymoser_decoder_select="mdct sinewin"
2092 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2093 nuv_decoder_select="idctdsp lzo"
2094 on2avc_decoder_select="mdct"
2095 opus_decoder_deps="avresample"
2096 opus_decoder_select="imdct15"
2097 png_decoder_deps="zlib"
2098 png_encoder_deps="zlib"
2099 png_encoder_select="huffyuvencdsp"
2100 prores_decoder_select="idctdsp"
2101 prores_encoder_select="fdctdsp"
2102 qcelp_decoder_select="lsp"
2103 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2104 ra_144_encoder_select="audio_frame_queue lpc"
2105 ralf_decoder_select="golomb"
2106 rscc_decoder_deps="zlib"
2107 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2108 rv10_encoder_select="h263_encoder"
2109 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2110 rv20_encoder_select="h263_encoder"
2111 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2113 screenpresso_decoder_deps="zlib"
2114 sipr_decoder_select="lsp"
2115 sp5x_decoder_select="mjpeg_decoder"
2116 svq1_decoder_select="hpeldsp"
2117 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2118 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2119 svq3_decoder_suggest="zlib"
2120 tak_decoder_select="audiodsp"
2121 tdsc_decoder_deps="zlib"
2122 tdsc_decoder_select="mjpeg_decoder"
2123 theora_decoder_select="vp3_decoder"
2124 thp_decoder_select="mjpeg_decoder"
2125 tiff_decoder_suggest="zlib"
2126 tiff_encoder_suggest="zlib"
2127 truehd_decoder_select="mlp_decoder"
2128 truemotion2_decoder_select="bswapdsp"
2129 truespeech_decoder_select="bswapdsp"
2130 tscc_decoder_deps="zlib"
2131 txd_decoder_select="texturedsp"
2132 twinvq_decoder_select="mdct lsp sinewin"
2133 utvideo_decoder_select="bswapdsp huffyuvdsp"
2134 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2135 vble_decoder_select="huffyuvdsp"
2136 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2137 vc1image_decoder_select="vc1_decoder"
2138 vorbis_decoder_select="mdct"
2139 vorbis_encoder_select="mdct"
2140 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2141 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2142 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2143 vp6a_decoder_select="vp6_decoder"
2144 vp6f_decoder_select="vp6_decoder"
2145 vp7_decoder_select="h264pred videodsp vp8dsp"
2146 vp8_decoder_select="h264pred videodsp vp8dsp"
2147 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2148 webp_decoder_select="vp8_decoder"
2149 wmapro_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_decoder_select="mdct sinewin wma_freqs"
2151 wmav1_encoder_select="mdct sinewin wma_freqs"
2152 wmav2_decoder_select="mdct sinewin wma_freqs"
2153 wmav2_encoder_select="mdct sinewin wma_freqs"
2154 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2155 wmv1_decoder_select="h263_decoder"
2156 wmv1_encoder_select="h263_encoder"
2157 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2158 wmv2_encoder_select="h263_encoder wmv2dsp"
2159 wmv3_decoder_select="vc1_decoder"
2160 wmv3image_decoder_select="wmv3_decoder"
2161 zerocodec_decoder_deps="zlib"
2162 zlib_decoder_deps="zlib"
2163 zlib_encoder_deps="zlib"
2164 zmbv_decoder_deps="zlib"
2165 zmbv_encoder_deps="zlib"
2166
2167 # hardware accelerators
2168 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2169 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2170 dxva2_lib_deps="dxva2"
2171 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2172 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2173
2174 h263_vaapi_hwaccel_deps="vaapi"
2175 h263_vaapi_hwaccel_select="h263_decoder"
2176 h264_d3d11va_hwaccel_deps="d3d11va"
2177 h264_d3d11va_hwaccel_select="h264_decoder"
2178 h264_dxva2_hwaccel_deps="dxva2"
2179 h264_dxva2_hwaccel_select="h264_decoder"
2180 h264_mmal_hwaccel_deps="mmal"
2181 h264_qsv_hwaccel_deps="libmfx"
2182 h264_vaapi_hwaccel_deps="vaapi"
2183 h264_vaapi_hwaccel_select="h264_decoder"
2184 h264_vda_hwaccel_deps="vda"
2185 h264_vda_hwaccel_select="h264_decoder"
2186 h264_vda_old_hwaccel_deps="vda"
2187 h264_vda_old_hwaccel_select="h264_decoder"
2188 h264_vdpau_hwaccel_deps="vdpau"
2189 h264_vdpau_hwaccel_select="h264_decoder"
2190 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2191 hevc_d3d11va_hwaccel_select="hevc_decoder"
2192 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2193 hevc_dxva2_hwaccel_select="hevc_decoder"
2194 hevc_qsv_hwaccel_deps="libmfx"
2195 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2196 hevc_vaapi_hwaccel_select="hevc_decoder"
2197 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2198 hevc_vdpau_hwaccel_select="hevc_decoder"
2199 mpeg1_vdpau_hwaccel_deps="vdpau"
2200 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2201 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2202 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2203 mpeg2_dxva2_hwaccel_deps="dxva2"
2204 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2205 mpeg2_mmal_hwaccel_deps="mmal"
2206 mpeg2_qsv_hwaccel_deps="libmfx"
2207 mpeg2_vaapi_hwaccel_deps="vaapi"
2208 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_vdpau_hwaccel_deps="vdpau"
2210 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2211 mpeg4_vaapi_hwaccel_deps="vaapi"
2212 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2213 mpeg4_vdpau_hwaccel_deps="vdpau"
2214 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2215 vc1_d3d11va_hwaccel_deps="d3d11va"
2216 vc1_d3d11va_hwaccel_select="vc1_decoder"
2217 vc1_dxva2_hwaccel_deps="dxva2"
2218 vc1_dxva2_hwaccel_select="vc1_decoder"
2219 vc1_mmal_hwaccel_deps="mmal"
2220 vc1_qsv_hwaccel_deps="libmfx"
2221 vc1_vaapi_hwaccel_deps="vaapi"
2222 vc1_vaapi_hwaccel_select="vc1_decoder"
2223 vc1_vdpau_hwaccel_deps="vdpau"
2224 vc1_vdpau_hwaccel_select="vc1_decoder"
2225 vp8_qsv_hwaccel_deps="libmfx"
2226 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2227 vp8_vaapi_hwaccel_select="vp8_decoder"
2228 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2229 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2230 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2231 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2232
2233 # hardware-accelerated codecs
2234 nvenc_deps_any="libdl LoadLibrary"
2235 omx_deps="libdl pthreads"
2236 omx_rpi_select="omx"
2237 qsvdec_select="qsv"
2238 qsvenc_select="qsv"
2239 vaapi_encode_deps="vaapi"
2240
2241 hwupload_cuda_filter_deps="cuda"
2242 scale_npp_filter_deps="cuda libnpp"
2243
2244 h264_mmal_decoder_deps="mmal"
2245 h264_nvenc_encoder_deps="nvenc"
2246 h264_omx_encoder_deps="omx"
2247 h264_qsv_decoder_deps="libmfx"
2248 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2249 h264_qsv_encoder_deps="libmfx"
2250 h264_qsv_encoder_select="qsvenc"
2251 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2252 h264_vaapi_encoder_select="vaapi_encode golomb"
2253 hevc_nvenc_encoder_deps="nvenc"
2254 hevc_qsv_decoder_deps="libmfx"
2255 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2256 hevc_qsv_encoder_deps="libmfx"
2257 hevc_qsv_encoder_select="hevc_ps qsvenc"
2258 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2259 hevc_vaapi_encoder_select="vaapi_encode golomb"
2260 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2261 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2262 mpeg2_mmal_decoder_deps="mmal"
2263 mpeg2_qsv_decoder_deps="libmfx"
2264 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2265 mpeg2_qsv_encoder_deps="libmfx"
2266 mpeg2_qsv_encoder_select="qsvenc"
2267 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2268 mpeg2_vaapi_encoder_select="vaapi_encode"
2269 mpeg4_omx_encoder_deps="omx"
2270 vc1_mmal_decoder_deps="mmal"
2271 vc1_qsv_decoder_deps="libmfx"
2272 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2273 vp8_qsv_decoder_deps="libmfx"
2274 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2275 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2276 vp8_vaapi_encoder_select="vaapi_encode"
2277 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2278 vp9_vaapi_encoder_select="vaapi_encode"
2279
2280 nvenc_h264_encoder_select="h264_nvenc_encoder"
2281 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2282
2283 # parsers
2284 aac_parser_select="adts_header"
2285 h264_parser_select="golomb h264dsp h264parse"
2286 hevc_parser_select="hevc_ps"
2287 mpegaudio_parser_select="mpegaudioheader"
2288 mpegvideo_parser_select="mpegvideo"
2289 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2290 vc1_parser_select="vc1dsp"
2291
2292 # bitstream_filters
2293 aac_adtstoasc_bsf_select="adts_header"
2294 mjpeg2jpeg_bsf_select="jpegtables"
2295
2296 # external libraries
2297 avisynth_deps="LoadLibrary"
2298 avxsynth_deps="libdl"
2299 avisynth_demuxer_deps_any="avisynth avxsynth"
2300 avisynth_demuxer_select="riffdec"
2301 libdcadec_decoder_deps="libdcadec"
2302 libfaac_encoder_deps="libfaac"
2303 libfaac_encoder_select="audio_frame_queue"
2304 libfdk_aac_decoder_deps="libfdk_aac"
2305 libfdk_aac_encoder_deps="libfdk_aac"
2306 libfdk_aac_encoder_select="audio_frame_queue"
2307 libgsm_decoder_deps="libgsm"
2308 libgsm_encoder_deps="libgsm"
2309 libgsm_ms_decoder_deps="libgsm"
2310 libgsm_ms_encoder_deps="libgsm"
2311 libilbc_decoder_deps="libilbc"
2312 libilbc_encoder_deps="libilbc"
2313 libkvazaar_encoder_deps="libkvazaar"
2314 libmp3lame_encoder_deps="libmp3lame"
2315 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2316 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2317 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2318 libopencore_amrnb_encoder_select="audio_frame_queue"
2319 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2320 libopenh264_decoder_deps="libopenh264"
2321 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2322 libopenh264_encoder_deps="libopenh264"
2323 libopenjpeg_decoder_deps="libopenjpeg"
2324 libopenjpeg_encoder_deps="libopenjpeg"
2325 libopus_decoder_deps="libopus"
2326 libopus_encoder_deps="libopus"
2327 libopus_encoder_select="audio_frame_queue"
2328 libschroedinger_decoder_deps="libschroedinger"
2329 libschroedinger_encoder_deps="libschroedinger"
2330 libspeex_decoder_deps="libspeex"
2331 libspeex_encoder_deps="libspeex"
2332 libspeex_encoder_select="audio_frame_queue"
2333 libtheora_encoder_deps="libtheora"
2334 libtwolame_encoder_deps="libtwolame"
2335 libvo_aacenc_encoder_deps="libvo_aacenc"
2336 libvo_aacenc_encoder_select="audio_frame_queue"
2337 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2338 libvorbis_encoder_deps="libvorbis"
2339 libvorbis_encoder_select="audio_frame_queue"
2340 libvpx_vp8_decoder_deps="libvpx"
2341 libvpx_vp8_encoder_deps="libvpx"
2342 libvpx_vp9_decoder_deps="libvpx"
2343 libvpx_vp9_encoder_deps="libvpx"
2344 libwavpack_encoder_deps="libwavpack"
2345 libwavpack_encoder_select="audio_frame_queue"
2346 libwebp_encoder_deps="libwebp"
2347 libx262_encoder_deps="libx262"
2348 libx264_encoder_deps="libx264"
2349 libx265_encoder_deps="libx265"
2350 libxavs_encoder_deps="libxavs"
2351 libxvid_encoder_deps="libxvid mkstemp"
2352
2353 # demuxers / muxers
2354 ac3_demuxer_select="ac3_parser"
2355 asf_demuxer_select="riffdec"
2356 asf_muxer_select="riffenc"
2357 asf_stream_muxer_select="asf_muxer"
2358 avi_demuxer_select="iso_media riffdec"
2359 avi_muxer_select="riffenc"
2360 caf_demuxer_select="iso_media riffdec"
2361 dash_muxer_select="mp4_muxer"
2362 dirac_demuxer_select="dirac_parser"
2363 dv_demuxer_select="dvprofile"
2364 dv_muxer_select="dvprofile"
2365 dxa_demuxer_select="riffdec"
2366 eac3_demuxer_select="ac3_parser"
2367 f4v_muxer_select="mov_muxer"
2368 flac_demuxer_select="flac_parser"
2369 hds_muxer_select="flv_muxer"
2370 hls_muxer_select="mpegts_muxer"
2371 ipod_muxer_select="mov_muxer"
2372 ismv_muxer_select="mov_muxer"
2373 matroska_audio_muxer_select="matroska_muxer"
2374 matroska_demuxer_select="iso_media riffdec"
2375 matroska_demuxer_suggest="bzlib lzo zlib"
2376 matroska_muxer_select="iso_media riffenc"
2377 mmf_muxer_select="riffenc"
2378 mov_demuxer_select="iso_media riffdec"
2379 mov_demuxer_suggest="zlib"
2380 mov_muxer_select="iso_media riffenc rtpenc_chain"
2381 mp3_demuxer_select="mpegaudio_parser"
2382 mp3_muxer_select="mpegaudioheader"
2383 mp4_muxer_select="mov_muxer"
2384 mpegts_demuxer_select="iso_media"
2385 mpegts_muxer_select="adts_muxer latm_muxer"
2386 mpegtsraw_demuxer_select="mpegts_demuxer"
2387 mxf_d10_muxer_select="mxf_muxer"
2388 nut_muxer_select="riffenc"
2389 nuv_demuxer_select="riffdec"
2390 oga_muxer_select="ogg_muxer"
2391 ogg_demuxer_select="dirac_parse"
2392 opus_muxer_select="ogg_muxer"
2393 psp_muxer_select="mov_muxer"
2394 rtp_demuxer_select="sdp_demuxer"
2395 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2396 rtsp_demuxer_select="http_protocol rtpdec"
2397 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2398 sap_demuxer_select="sdp_demuxer"
2399 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2400 sdp_demuxer_select="rtpdec"
2401 smoothstreaming_muxer_select="ismv_muxer"
2402 spdif_demuxer_select="adts_header"
2403 spdif_muxer_select="adts_header"
2404 spx_muxer_select="ogg_muxer"
2405 swf_demuxer_suggest="zlib"
2406 tak_demuxer_select="tak_parser"
2407 tg2_muxer_select="mov_muxer"
2408 tgp_muxer_select="mov_muxer"
2409 w64_demuxer_select="wav_demuxer"
2410 wav_demuxer_select="riffdec"
2411 wav_muxer_select="riffenc"
2412 webm_muxer_select="iso_media riffenc"
2413 wtv_demuxer_select="mpegts_demuxer riffdec"
2414 xmv_demuxer_select="riffdec"
2415 xwma_demuxer_select="riffdec"
2416
2417 # indevs / outdevs
2418 alsa_indev_deps="alsa"
2419 alsa_outdev_deps="alsa"
2420 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2421 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2422 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2423 dv1394_indev_deps="dv1394"
2424 dv1394_indev_select="dv_demuxer"
2425 fbdev_indev_deps="linux_fb_h"
2426 jack_indev_deps="libjack"
2427 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2428 libcdio_indev_deps="libcdio"
2429 libdc1394_indev_deps="libdc1394"
2430 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2431 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2432 pulse_indev_deps="libpulse"
2433 sndio_indev_deps="sndio"
2434 sndio_outdev_deps="sndio"
2435 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2436 vfwcap_indev_deps="vfw32 vfwcap_defines"
2437 xcbgrab_indev_deps="libxcb libxcb_shape"
2438 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2439
2440 # protocols
2441 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2442 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2443 ffrtmpcrypt_protocol_select="tcp_protocol"
2444 ffrtmphttp_protocol_conflict="librtmp_protocol"
2445 ffrtmphttp_protocol_select="http_protocol"
2446 gopher_protocol_select="network"
2447 http_protocol_select="tcp_protocol"
2448 httpproxy_protocol_select="tcp_protocol"
2449 https_protocol_select="tls_protocol"
2450 icecast_protocol_select="http_protocol"
2451 librtmp_protocol_deps="librtmp"
2452 librtmpe_protocol_deps="librtmp"
2453 librtmps_protocol_deps="librtmp"
2454 librtmpt_protocol_deps="librtmp"
2455 librtmpte_protocol_deps="librtmp"
2456 mmsh_protocol_select="http_protocol"
2457 mmst_protocol_select="network"
2458 rtmp_protocol_conflict="librtmp_protocol"
2459 rtmp_protocol_select="tcp_protocol"
2460 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2461 rtmps_protocol_conflict="librtmp_protocol"
2462 rtmps_protocol_select="tls_protocol"
2463 rtmpt_protocol_select="ffrtmphttp_protocol"
2464 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2465 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2466 rtp_protocol_select="udp_protocol"
2467 sctp_protocol_deps="struct_sctp_event_subscribe"
2468 sctp_protocol_select="network"
2469 srtp_protocol_select="rtp_protocol srtp"
2470 tcp_protocol_select="network"
2471 tls_gnutls_protocol_deps="gnutls"
2472 tls_gnutls_protocol_select="tcp_protocol"
2473 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2474 tls_openssl_protocol_deps="openssl"
2475 tls_openssl_protocol_select="tcp_protocol"
2476 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2477 udp_protocol_select="network"
2478 unix_protocol_deps="sys_un_h"
2479 unix_protocol_select="network"
2480
2481 # filters
2482 asyncts_filter_deps="avresample"
2483 blackframe_filter_deps="gpl"
2484 boxblur_filter_deps="gpl"
2485 bs2b_filter_deps="libbs2b"
2486 cropdetect_filter_deps="gpl"
2487 deinterlace_qsv_filter_deps="libmfx"
2488 deinterlace_vaapi_filter_deps="vaapi"
2489 delogo_filter_deps="gpl"
2490 drawtext_filter_deps="libfreetype"
2491 drawtext_filter_suggest="libfontconfig"
2492 frei0r_filter_deps="frei0r libdl"
2493 frei0r_src_filter_deps="frei0r libdl"
2494 hdcd_filter_deps="libhdcd"
2495 hqdn3d_filter_deps="gpl"
2496 interlace_filter_deps="gpl"
2497 movie_filter_deps="avcodec avformat"
2498 ocv_filter_deps="libopencv"
2499 resample_filter_deps="avresample"
2500 scale_filter_deps="swscale"
2501 scale_qsv_filter_deps="libmfx"
2502 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2503
2504 # examples
2505 decode_audio_example_deps="avcodec avutil"
2506 decode_video_example_deps="avcodec avutil"
2507 encode_audio_example_deps="avcodec avutil"
2508 encode_video_example_deps="avcodec avutil"
2509 filter_audio_example_deps="avfilter avutil"
2510 metadata_example_deps="avformat avutil"
2511 output_example_deps="avcodec avformat avresample avutil swscale"
2512 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2513 transcode_aac_example_deps="avcodec avformat avresample"
2514
2515 # EXTRALIBS_LIST
2516 cpu_init_extralibs="pthreads_extralibs"
2517 cws2fws_extralibs="zlib_extralibs"
2518
2519 # libraries, in linking order
2520 avcodec_deps="avutil"
2521 avcodec_select="null_bsf"
2522 avdevice_deps="avformat avcodec avutil"
2523 avfilter_deps="avutil"
2524 avformat_deps="avcodec avutil"
2525 avformat_suggest="network"
2526 avresample_deps="avutil"
2527 swscale_deps="avutil"
2528
2529 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2530 avdevice_extralibs="libm_extralibs"
2531 avformat_extralibs="libm_extralibs"
2532 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2533 avresample_extralibs="libm_extralibs"
2534 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"
2535 swscale_extralibs="libm_extralibs"
2536
2537 # programs
2538 avconv_deps="avcodec avfilter avformat avresample swscale"
2539 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2540                fps_filter null_filter resample_filter scale_filter
2541                trim_filter"
2542 avconv_suggest="dxva2_lib ole32 psapi shell32"
2543 avplay_deps="avcodec avfilter avformat avresample sdl"
2544 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2545 avplay_suggest="shell32"
2546 avprobe_deps="avcodec avformat"
2547 avprobe_suggest="shell32"
2548
2549 # documentation
2550 pod2man_deps="doc"
2551 texi2html_deps="doc"
2552
2553 # default parameters
2554
2555 logfile="avbuild/config.log"
2556
2557 # installation paths
2558 prefix_default="/usr/local"
2559 bindir_default='${prefix}/bin'
2560 datadir_default='${prefix}/share/avconv'
2561 docdir_default='${prefix}/share/doc/libav'
2562 incdir_default='${prefix}/include'
2563 libdir_default='${prefix}/lib'
2564 mandir_default='${prefix}/share/man'
2565 shlibdir_default="$libdir_default"
2566
2567 # toolchain
2568 ar_default="ar"
2569 cc_default="gcc"
2570 host_cc_default="gcc"
2571 x86asmexe_default="nasm"
2572 ln_s="ln -s -f"
2573 nm_default="nm -g"
2574 pkg_config_default=pkg-config
2575 ranlib="ranlib"
2576 strip="strip"
2577 version_script='--version-script'
2578
2579 # machine
2580 arch_default=$(uname -m)
2581 cpu="generic"
2582 intrinsics="none"
2583
2584 # OS
2585 target_os_default=$(tolower $(uname -s))
2586 host_os=$target_os_default
2587
2588 # configurable options
2589 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2590
2591 enable asm
2592 enable debug
2593 enable doc
2594 enable faan faandct faanidct
2595 enable optimizations
2596 enable safe_bitstream_reader
2597 enable static
2598 enable swscale_alpha
2599 enable valgrind_backtrace
2600
2601 # By default, enable only those hwaccels that have no external dependencies.
2602 enable d3d11va dxva2 vda vdpau
2603
2604 # internal components are enabled by default
2605 enable $EXTRALIBS_LIST
2606
2607 # Avoid external, non-system, libraries getting enabled by dependency resolution
2608 disable $EXTERNAL_LIBRARY_LIST
2609
2610 # build settings
2611 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2612 LIBPREF="lib"
2613 LIBSUF=".a"
2614 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2615 SLIBPREF="lib"
2616 SLIBSUF=".so"
2617 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2618 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2619 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2620 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2621 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2622 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2623 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2624
2625 asflags_filter=echo
2626 cflags_filter=echo
2627 ldflags_filter=echo
2628
2629 AS_C='-c'
2630 AS_O='-o $@'
2631 CC_C='-c'
2632 CC_E='-E -o $@'
2633 CC_O='-o $@'
2634 OBJCC_C='-c'
2635 OBJCC_E='-E -o $@'
2636 OBJCC_O='-o $@'
2637 X86ASM_O='-o $@'
2638 LD_O='-o $@'
2639 LD_LIB='-l%'
2640 LD_PATH='-L'
2641 HOSTCC_C='-c'
2642 HOSTCC_E='-E -o $@'
2643 HOSTCC_O='-o $@'
2644 HOSTLD_O='-o $@'
2645
2646 host_extralibs='-lm'
2647 host_cflags_filter=echo
2648 host_ldflags_filter=echo
2649
2650 target_path='$(CURDIR)'
2651
2652 # since the object filename is not given with the -MM flag, the compiler
2653 # is only able to print the basename, and we must add the path ourselves
2654 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2655 DEPFLAGS='-MM'
2656
2657 mkdir -p avbuild
2658
2659 # find source path
2660 if test -f configure; then
2661     source_path=.
2662 else
2663     source_path=$(cd $(dirname "$0"); pwd)
2664     echo "$source_path" | grep -q '[[:blank:]]' &&
2665         die "Out of tree builds are impossible with whitespace in source path."
2666     test -e "$source_path/config.h" &&
2667         die "Out of tree builds are impossible with config.h in source dir."
2668 fi
2669
2670 for v in "$@"; do
2671     r=${v#*=}
2672     l=${v%"$r"}
2673     r=$(sh_quote "$r")
2674     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2675 done
2676
2677 find_things(){
2678     thing=$1
2679     pattern=$2
2680     file=$source_path/$3
2681     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2682 }
2683
2684 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2685 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2686 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2687 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2688 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2689 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2690 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2691 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2692 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2693
2694 find_things_extern(){
2695     thing=$1
2696     pattern=$2
2697     file=$source_path/$3
2698     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2699 }
2700
2701 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2702 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2703
2704 AVCODEC_COMPONENTS_LIST="
2705     $BSF_LIST
2706     $DECODER_LIST
2707     $ENCODER_LIST
2708     $HWACCEL_LIST
2709     $PARSER_LIST
2710 "
2711
2712 AVDEVICE_COMPONENTS_LIST="
2713     $INDEV_LIST
2714     $OUTDEV_LIST
2715 "
2716
2717 AVFILTER_COMPONENTS_LIST="
2718     $FILTER_LIST
2719 "
2720
2721 AVFORMAT_COMPONENTS_LIST="
2722     $DEMUXER_LIST
2723     $MUXER_LIST
2724     $PROTOCOL_LIST
2725 "
2726
2727 ALL_COMPONENTS="
2728     $AVCODEC_COMPONENTS_LIST
2729     $AVDEVICE_COMPONENTS_LIST
2730     $AVFILTER_COMPONENTS_LIST
2731     $AVFORMAT_COMPONENTS_LIST
2732 "
2733
2734 for n in $COMPONENT_LIST; do
2735     v=$(toupper ${n%s})_LIST
2736     eval enable \$$v
2737     eval ${n}_if_any="\$$v"
2738 done
2739
2740 enable $ARCH_EXT_LIST
2741
2742 die_unknown(){
2743     echo "Unknown option \"$1\"."
2744     echo "See $0 --help for available options."
2745     exit 1
2746 }
2747
2748 print_3_columns() {
2749     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2750 }
2751
2752 show_list() {
2753     suffix=_$1
2754     shift
2755     echo $* | sed s/$suffix//g | print_3_columns
2756     exit 0
2757 }
2758
2759 rand_list(){
2760     IFS=', '
2761     set -- $*
2762     unset IFS
2763     for thing; do
2764         comp=${thing%:*}
2765         prob=${thing#$comp}
2766         prob=${prob#:}
2767         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2768         echo "prob ${prob:-0.5}"
2769         printf '%s\n' $comp
2770     done
2771 }
2772
2773 do_random(){
2774     action=$1
2775     shift
2776     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2777     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2778 }
2779
2780 for opt do
2781     optval="${opt#*=}"
2782     case "$opt" in
2783         --extra-ldflags=*)
2784             add_ldflags $optval
2785         ;;
2786         --extra-ldexeflags=*)
2787             add_ldexeflags $optval
2788         ;;
2789         --extra-libs=*)
2790             add_extralibs $optval
2791         ;;
2792         --disable-devices)
2793             disable $INDEV_LIST $OUTDEV_LIST
2794         ;;
2795         --enable-debug=*)
2796             debuglevel="$optval"
2797         ;;
2798         --disable-programs)
2799             disable $PROGRAM_LIST
2800         ;;
2801         --disable-everything)
2802             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2803         ;;
2804         --disable-all)
2805             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2806             disable $LIBRARY_LIST $PROGRAM_LIST doc
2807         ;;
2808         --enable-random|--disable-random)
2809             action=${opt%%-random}
2810             do_random ${action#--} $COMPONENT_LIST
2811         ;;
2812         --enable-random=*|--disable-random=*)
2813             action=${opt%%-random=*}
2814             do_random ${action#--} $optval
2815         ;;
2816         --enable-*=*|--disable-*=*)
2817             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2818             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2819             eval list=\$$(toupper $thing)_LIST
2820             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2821             $action $(filter "$name" $list)
2822         ;;
2823         --enable-avserver|--disable-avserver*)
2824             warn "avserver has been removed, the ${opt} option is only"\
2825                  "provided for compatibility and will be removed in the future"
2826         ;;
2827         --enable-yasm|--disable-yasm)
2828             warn "The ${opt} option is only provided for compatibility and will be\n"\
2829                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2830             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2831         ;;
2832         --enable-?*|--disable-?*)
2833             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2834             if is_in $option $COMPONENT_LIST; then
2835                 test $action = disable && action=unset
2836                 eval $action \$$(toupper ${option%s})_LIST
2837             elif is_in $option $CMDLINE_SELECT; then
2838                 $action $option
2839             else
2840                 die_unknown $opt
2841             fi
2842         ;;
2843         --list-*)
2844             NAME="${opt#--list-}"
2845             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2846             NAME=${NAME%s}
2847             eval show_list $NAME \$$(toupper $NAME)_LIST
2848         ;;
2849         --help|-h) show_help
2850         ;;
2851         --quiet|-q) quiet=yes
2852         ;;
2853         *)
2854             optname="${opt%%=*}"
2855             optname="${optname#--}"
2856             optname=$(echo "$optname" | sed 's/-/_/g')
2857             if is_in $optname $CMDLINE_SET; then
2858                 eval $optname='$optval'
2859             elif is_in $optname $CMDLINE_APPEND; then
2860                 append $optname "$optval"
2861             else
2862                 die_unknown $opt
2863             fi
2864         ;;
2865     esac
2866 done
2867
2868 for e in $env; do
2869     eval "export $e"
2870 done
2871
2872 disabled logging && logfile=/dev/null
2873
2874 # Die early if licensing-related configure options are incompatible.
2875 die_license_disabled() {
2876     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2877 }
2878
2879 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2880 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2881 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2882
2883 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2884
2885 # Disable all the library-specific components if the library itself
2886 # is disabled, see AVCODEC_LIST and following _LIST variables.
2887
2888 disable_components(){
2889     disabled ${1} && disable $(
2890         eval components="\$$(toupper ${1})_COMPONENTS"
2891         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2892     )
2893 }
2894
2895 map 'disable_components $v' $LIBRARY_LIST
2896
2897 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2898 set >> $logfile
2899
2900 case "$toolchain" in
2901     *-asan)
2902         cc_default="${toolchain%-asan}"
2903         add_cflags  -fsanitize=address
2904         add_ldflags -fsanitize=address
2905     ;;
2906     *-msan)
2907         cc_default="${toolchain%-msan}"
2908         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2909         add_ldflags -fsanitize=memory
2910     ;;
2911     *-tsan)
2912         cc_default="${toolchain%-tsan}"
2913         add_cflags  -fsanitize=thread -fPIE
2914         add_ldflags -fsanitize=thread -pie
2915         case "$toolchain" in
2916             gcc-tsan)
2917                 add_cflags  -fPIC
2918                 add_ldflags -fPIC
2919                 ;;
2920         esac
2921     ;;
2922     *-usan)
2923         cc_default="${toolchain%-usan}"
2924         add_cflags  -fsanitize=undefined
2925         add_ldflags -fsanitize=undefined
2926         case "$toolchain" in
2927             clang-usan)
2928                 add_cflags -O1
2929                 ;;
2930         esac
2931     ;;
2932     valgrind-*)
2933         target_exec_default="valgrind"
2934         case "$toolchain" in
2935             valgrind-massif)
2936                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2937                 ;;
2938             valgrind-memcheck)
2939                 target_exec_args="--track-origins=yes --leak-check=full"
2940                 ;;
2941         esac
2942     ;;
2943     msvc)
2944         # Check whether the current MSVC version needs the C99 converter.
2945         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2946         # support enough of C99 to build libav. Default to the new
2947         # behaviour if the regexp was unable to match anything, since this
2948         # successfully parses the version number of existing supported
2949         # versions that require the converter (MSVC 2010 and 2012).
2950         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2951         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2952             cc_default="cl"
2953         else
2954             cc_default="c99wrap cl"
2955         fi
2956         ld_default="$source_path/compat/windows/mslink"
2957         nm_default="dumpbin -symbols"
2958         ar_default="lib"
2959         case "$arch" in
2960         arm*)
2961             as_default="armasm"
2962             ;;
2963         esac
2964         target_os_default="win32"
2965         # Use a relative path for TMPDIR. This makes sure all the
2966         # ffconf temp files are written with a relative path, avoiding
2967         # issues with msys/win32 path conversion for MSVC parameters
2968         # such as -Fo<file> or -out:<file>.
2969         TMPDIR=.
2970     ;;
2971     icl)
2972         cc_default="icl"
2973         ld_default="xilink"
2974         nm_default="dumpbin -symbols"
2975         ar_default="xilib"
2976         target_os_default="win32"
2977         TMPDIR=.
2978     ;;
2979     gcov)
2980         add_cflags  -fprofile-arcs -ftest-coverage
2981         add_ldflags -fprofile-arcs -ftest-coverage
2982     ;;
2983     llvm-cov)
2984         add_cflags -fprofile-arcs -ftest-coverage
2985         add_ldflags --coverage
2986     ;;
2987     hardened)
2988         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2989         add_cflags   -fno-strict-overflow -fstack-protector-all
2990         add_ldflags  -Wl,-z,relro -Wl,-z,now
2991     ;;
2992     ?*)
2993         die "Unknown toolchain $toolchain"
2994     ;;
2995 esac
2996
2997 test -n "$cross_prefix" && enable cross_compile
2998
2999 if enabled cross_compile; then
3000     test -n "$arch" && test -n "$target_os" ||
3001         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3002 fi
3003
3004 ar_default="${cross_prefix}${ar_default}"
3005 cc_default="${cross_prefix}${cc_default}"
3006 objcc_default="${cross_prefix}${objcc_default}"
3007 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3008 nm_default="${cross_prefix}${nm_default}"
3009 pkg_config_default="${cross_prefix}${pkg_config_default}"
3010 ranlib="${cross_prefix}${ranlib}"
3011 strip="${cross_prefix}${strip}"
3012
3013 sysinclude_default="${sysroot}/usr/include"
3014
3015 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3016 enabled cross_compile || host_cc_default=$cc
3017 set_default host_cc
3018
3019 if ! $pkg_config --version >/dev/null 2>&1; then
3020     warn "$pkg_config not found, library detection may fail."
3021     pkg_config=false
3022 fi
3023
3024 exesuf() {
3025     case $1 in
3026         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3027     esac
3028 }
3029
3030 EXESUF=$(exesuf $target_os)
3031 HOSTEXESUF=$(exesuf $host_os)
3032
3033 # set temporary file name
3034 : ${TMPDIR:=$TEMPDIR}
3035 : ${TMPDIR:=$TMP}
3036 : ${TMPDIR:=/tmp}
3037
3038 if ! check_cmd mktemp -u XXXXXX; then
3039     # simple replacement for missing mktemp
3040     # NOT SAFE FOR GENERAL USE
3041     mktemp(){
3042         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3043         echo "$tmpname"
3044         mkdir "$tmpname"
3045     }
3046 fi
3047
3048 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3049     die "Unable to create temporary directory in $TMPDIR."
3050
3051 tmpfile(){
3052     tmp="${AVTMPDIR}/test"$2
3053     (set -C; exec > $tmp) 2> /dev/null ||
3054         die "Unable to create temporary file in $AVTMPDIR."
3055     eval $1=$tmp
3056 }
3057
3058 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3059 trap 'exit 2' INT
3060
3061 tmpfile TMPASM .asm
3062 tmpfile TMPC   .c
3063 tmpfile TMPE   $EXESUF
3064 tmpfile TMPH   .h
3065 tmpfile TMPO   .o
3066 tmpfile TMPS   .S
3067 tmpfile TMPSH  .sh
3068 tmpfile TMPV   .ver
3069
3070 unset -f mktemp
3071
3072 chmod +x $TMPE
3073
3074 # make sure we can execute files in $TMPDIR
3075 cat > $TMPSH 2>> $logfile <<EOF
3076 #! /bin/sh
3077 EOF
3078 chmod +x $TMPSH >> $logfile 2>&1
3079 if ! $TMPSH >> $logfile 2>&1; then
3080     cat <<EOF
3081 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3082 variable to another directory and make sure that it is not mounted noexec.
3083 EOF
3084     die "Sanity test failed."
3085 fi
3086
3087 armasm_flags(){
3088     for flag; do
3089         case $flag in
3090             # Filter out MSVC cl.exe options from cflags that shouldn't
3091             # be passed to gas-preprocessor
3092             -M[TD]*)                                            ;;
3093             *)                  echo $flag                      ;;
3094         esac
3095    done
3096 }
3097
3098 ccc_flags(){
3099     for flag; do
3100         case $flag in
3101             -std=c99)           echo -c99                       ;;
3102             -mcpu=*)            echo -arch ${flag#*=}           ;;
3103             -mieee)             echo -ieee                      ;;
3104             -O*|-fast)          echo $flag                      ;;
3105             -fno-math-errno)    echo -assume nomath_errno       ;;
3106             -g)                 echo -g3                        ;;
3107             -Wall)              echo -msg_enable level2         ;;
3108             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3109             -Wl,*)              echo $flag                      ;;
3110             -f*|-W*)                                            ;;
3111             *)                  echo $flag                      ;;
3112         esac
3113    done
3114 }
3115
3116 cparser_flags(){
3117     for flag; do
3118         case $flag in
3119             -Wno-switch)             echo -Wno-switch-enum ;;
3120             -Wno-format-zero-length) ;;
3121             -Wdisabled-optimization) ;;
3122             -Wno-pointer-sign)       echo -Wno-other ;;
3123             *)                       echo $flag ;;
3124         esac
3125     done
3126 }
3127
3128 msvc_common_flags(){
3129     for flag; do
3130         case $flag in
3131             # In addition to specifying certain flags under the compiler
3132             # specific filters, they must be specified here as well or else the
3133             # generic catch all at the bottom will print the original flag.
3134             -Wall)                ;;
3135             -Wextra)              ;;
3136             -std=c99)             ;;
3137             # Common flags
3138             -fomit-frame-pointer) ;;
3139             -g)                   echo -Z7 ;;
3140             -fno-math-errno)      ;;
3141             -fno-common)          ;;
3142             -fno-signed-zeros)    ;;
3143             -fPIC)                ;;
3144             -mthumb)              ;;
3145             -march=*)             ;;
3146             -lz)                  echo zlib.lib ;;
3147             -lx264)               echo libx264.lib ;;
3148             -l*)                  echo ${flag#-l}.lib ;;
3149             -L*)                  echo -libpath:${flag#-L} ;;
3150             *)                    echo $flag ;;
3151         esac
3152     done
3153 }
3154
3155 msvc_flags(){
3156     msvc_common_flags "$@"
3157     for flag; do
3158         case $flag in
3159             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3160                                        -wd4554 ;;
3161             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3162                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3163                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3164                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3165         esac
3166     done
3167 }
3168
3169 icl_flags(){
3170     msvc_common_flags "$@"
3171     for flag; do
3172         case $flag in
3173             # Despite what Intel's documentation says -Wall, which is supported
3174             # on Windows, does enable remarks so disable them here.
3175             -Wall)                echo $flag -Qdiag-disable:remark ;;
3176             -std=c99)             echo -Qstd=c99 ;;
3177         esac
3178     done
3179 }
3180
3181 pgi_flags(){
3182     for flag; do
3183         case $flag in
3184             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3185             -fomit-frame-pointer) echo -Mnoframe ;;
3186             -g)                   echo -gopt ;;
3187             *)                    echo $flag ;;
3188         esac
3189     done
3190 }
3191
3192 suncc_flags(){
3193     for flag; do
3194         case $flag in
3195             -march=*|-mcpu=*)
3196                 case "${flag#*=}" in
3197                     native)                   echo -xtarget=native       ;;
3198                     v9|niagara)               echo -xarch=sparc          ;;
3199                     ultrasparc)               echo -xarch=sparcvis       ;;
3200                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3201                     i586|pentium)             echo -xchip=pentium        ;;
3202                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3203                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3204                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3205                     pentium4*)          echo -xtarget=pentium4           ;;
3206                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3207                     *-sse3)             echo -xarch=sse3                 ;;
3208                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3209                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3210                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3211                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3212                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3213                     k8|opteron|athlon64|athlon-fx)
3214                                                echo -xarch=sse2a         ;;
3215                     athlon*)                   echo -xarch=pentium_proa  ;;
3216                 esac
3217                 ;;
3218             -std=c99)             echo -xc99              ;;
3219             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3220             -fPIC)                echo -KPIC -xcode=pic32 ;;
3221             -W*,*)                echo $flag              ;;
3222             -f*-*|-W*|-mimpure-text)                      ;;
3223             -shared)              echo -G                 ;;
3224             *)                    echo $flag              ;;
3225         esac
3226     done
3227 }
3228
3229 tms470_flags(){
3230     for flag; do
3231         case $flag in
3232             -march=*|-mcpu=*)
3233                 case "${flag#*=}" in
3234                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3235                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3236                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3237                     armv6*|arm11*)          echo -mv=6   ;;
3238                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3239                                             echo -mv=5e  ;;
3240                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3241                 esac
3242                 ;;
3243             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3244             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3245             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3246             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3247             -msoft-float)   echo --float_support=vfplib       ;;
3248             -O[0-3]|-mf=*)  echo $flag                        ;;
3249             -g)             echo -g -mn                       ;;
3250             -pds=*)         echo $flag                        ;;
3251             -D*|-I*)        echo $flag                        ;;
3252             --gcc|--abi=*)  echo $flag                        ;;
3253             -me)            echo $flag                        ;;
3254         esac
3255     done
3256 }
3257
3258 probe_cc(){
3259     pfx=$1
3260     _cc=$2
3261
3262     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3263     unset _ld_o _ldflags _ld_lib _ld_path
3264     unset _depflags _DEPCMD _DEPFLAGS
3265     _flags_filter=echo
3266
3267     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3268         _type=llvm_gcc
3269         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3270         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3275         _type=gcc
3276         gcc_version=$($_cc --version | head -n1)
3277         gcc_basever=$($_cc -dumpversion)
3278         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3279         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3280         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3281         if ! $_cc -dumpversion | grep -q '^2\.'; then
3282             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3283         fi
3284         _cflags_speed='-O3'
3285         _cflags_size='-Os'
3286     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3287         _type=icc
3288         _ident=$($_cc --version | head -n1)
3289         _depflags='-MMD'
3290         _cflags_speed='-O3'
3291         _cflags_size='-Os'
3292         _cflags_noopt='-O1'
3293     elif $_cc -v 2>&1 | grep -q xlc; then
3294         _type=xlc
3295         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3296         _cflags_speed='-O5'
3297         _cflags_size='-O5 -qcompact'
3298     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3299         _type=ccc
3300         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3301         _DEPFLAGS='-M'
3302         _cflags_speed='-fast'
3303         _cflags_size='-O1'
3304         _flags_filter=ccc_flags
3305     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3306         test -d "$sysroot" || die "No valid sysroot specified."
3307         _type=armcc
3308         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3309         armcc_conf="$PWD/armcc.conf"
3310         $_cc --arm_linux_configure                 \
3311              --arm_linux_config_file="$armcc_conf" \
3312              --configure_sysroot="$sysroot"        \
3313              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3314              die "Error creating armcc configuration file."
3315         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3316         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3317         as_default="${cross_prefix}gcc"
3318         _depflags='-MMD'
3319         _cflags_speed='-O3'
3320         _cflags_size='-Os'
3321     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3322         _type=tms470
3323         _ident=$($_cc -version | head -n1 | tr -s ' ')
3324         _flags='--gcc --abi=eabi -me'
3325         _cc_e='-ppl -fe=$@'
3326         _cc_o='-fe=$@'
3327         _depflags='-ppa -ppd=$(@:.o=.d)'
3328         _cflags_speed='-O3 -mf=5'
3329         _cflags_size='-O3 -mf=2'
3330         _flags_filter=tms470_flags
3331     elif $_cc -v 2>&1 | grep -q clang; then
3332         _type=clang
3333         _ident=$($_cc --version 2>/dev/null | head -n1)
3334         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3335         _cflags_speed='-O3'
3336         _cflags_size='-Os'
3337     elif $_cc -V 2>&1 | grep -q Sun; then
3338         _type=suncc
3339         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3341         _DEPFLAGS='-xM1 -xc99'
3342         _ldflags='-std=c99'
3343         _cflags_speed='-O5'
3344         _cflags_size='-O5 -xspace'
3345         _flags_filter=suncc_flags
3346     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3347         _type=pathscale
3348         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O2'
3351         _cflags_size='-Os'
3352         _flags_filter='filter_out -Wdisabled-optimization'
3353     elif $_cc -v 2>&1 | grep -q Open64; then
3354         _type=open64
3355         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O2'
3358         _cflags_size='-Os'
3359         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3360     elif $_cc -V 2>&1 | grep -q Portland; then
3361         _type=pgi
3362         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3363         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3364         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3365         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3366         _cflags_noopt="-O1"
3367         _flags_filter=pgi_flags
3368     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3369         _type=armasm
3370         _ident=$($_cc | head -n1)
3371         # 4509: "This form of conditional instruction is deprecated"
3372         _flags="-nologo -ignore 4509"
3373         _flags_filter=armasm_flags
3374     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3375         _type=msvc
3376         _ident=$($_cc 2>&1 | head -n1)
3377         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3378         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3379         _cflags_speed="-O2"
3380         _cflags_size="-O1"
3381         _cflags_noopt="-O1"
3382         if $_cc -nologo- 2>&1 | grep -q Linker; then
3383             _ld_o='-out:$@'
3384         else
3385             _ld_o='-Fe$@'
3386         fi
3387         _cc_o='-Fo$@'
3388         _cc_e='-P -Fi$@'
3389         _flags_filter=msvc_flags
3390         _ld_lib='lib%.a'
3391         _ld_path='-libpath:'
3392         _flags='-nologo'
3393     elif $_cc 2>&1 | grep -q Intel; then
3394         _type=icl
3395         _ident=$($_cc 2>&1 | head -n1)
3396         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3397         # Not only is O3 broken on 13.x+ but it is slower on all previous
3398         # versions (tested) as well.
3399         _cflags_speed="-O2"
3400         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3401         if $_cc 2>&1 | grep -q Linker; then
3402             _ld_o='-out:$@'
3403         else
3404             _ld_o='-Fe$@'
3405         fi
3406         _cc_o='-Fo$@'
3407         _cc_e='-P'
3408         _flags_filter=icl_flags
3409         _ld_lib='lib%.a'
3410         _ld_path='-libpath:'
3411         # -Qdiag-error to make icl error when seeing certain unknown arguments
3412         _flags='-nologo -Qdiag-error:4044,10157'
3413         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3414         # with MSVC which enables it by default.
3415         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3416     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3417         # lld can emulate multiple different linkers; in ms link.exe mode,
3418         # the -? parameter gives the help output which contains an identifyable
3419         # string, while it gives an error in other modes.
3420         _type=lld-link
3421         # The link.exe mode doesn't have a switch for getting the version,
3422         # but we can force it back to gnu mode and get the version from there.
3423         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3424         _ld_o='-out:$@'
3425         _flags_filter=msvc_flags
3426         _ld_lib='lib%.a'
3427         _ld_path='-libpath:'
3428     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3429         _type=cparser
3430         _ident=$($_cc --version | head -n1)
3431         _depflags='-MMD'
3432         _cflags_speed='-O4'
3433         _cflags_size='-O2'
3434         _flags_filter=cparser_flags
3435     fi
3436
3437     eval ${pfx}_type=\$_type
3438     eval ${pfx}_ident=\$_ident
3439 }
3440
3441 set_ccvars(){
3442     eval ${1}_C=\${_cc_c-\${${1}_C}}
3443     eval ${1}_E=\${_cc_e-\${${1}_E}}
3444     eval ${1}_O=\${_cc_o-\${${1}_O}}
3445
3446     if [ -n "$_depflags" ]; then
3447         eval ${1}_DEPFLAGS=\$_depflags
3448     else
3449         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3450         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3451         eval DEP${1}FLAGS=\$_flags
3452     fi
3453 }
3454
3455 probe_cc cc "$cc"
3456 cflags_filter=$_flags_filter
3457 cflags_speed=$_cflags_speed
3458 cflags_size=$_cflags_size
3459 cflags_noopt=$_cflags_noopt
3460 add_cflags $_flags $_cflags
3461 cc_ldflags=$_ldflags
3462 set_ccvars CC
3463
3464 probe_cc hostcc "$host_cc"
3465 host_cflags_filter=$_flags_filter
3466 host_cflags_speed=$_cflags_speed
3467 add_host_cflags  $_flags $_cflags
3468 set_ccvars HOSTCC
3469
3470 test -n "$cc_type" && enable $cc_type ||
3471     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3472
3473 : ${as_default:=$cc}
3474 : ${objcc_default:=$cc}
3475 : ${dep_cc_default:=$cc}
3476 : ${ld_default:=$cc}
3477 : ${host_ld_default:=$host_cc}
3478 set_default ar as objcc dep_cc ld host_ld
3479
3480 probe_cc as "$as"
3481 asflags_filter=$_flags_filter
3482 add_asflags $_flags $_cflags
3483 set_ccvars AS
3484
3485 probe_cc objcc "$objcc"
3486 objcflags_filter=$_flags_filter
3487 add_objcflags $_flags $_cflags
3488 set_ccvars OBJC
3489
3490 probe_cc ld "$ld"
3491 ldflags_filter=$_flags_filter
3492 add_ldflags $_flags $_ldflags
3493 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3494 LD_O=${_ld_o-$LD_O}
3495 LD_LIB=${_ld_lib-$LD_LIB}
3496 LD_PATH=${_ld_path-$LD_PATH}
3497
3498 probe_cc hostld "$host_ld"
3499 host_ldflags_filter=$_flags_filter
3500 add_host_ldflags $_flags $_ldflags
3501 HOSTLD_O=${_ld_o-$HOSTLD_O}
3502
3503 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3504     probe_cc depcc "$dep_cc"
3505     CCDEP=${_DEPCMD:-$DEPCMD}
3506     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3507     DEPCCFLAGS=$_flags
3508 fi
3509
3510 if $ar 2>&1 | grep -q Microsoft; then
3511     arflags="-nologo"
3512     ar_o='-out:$@'
3513 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3514     arflags="rq"
3515     ar_o='$@'
3516 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3517     arflags='-Xany -r -c'
3518     ar_o='$@'
3519 else
3520     arflags="rc"
3521     ar_o='$@'
3522 fi
3523
3524 add_cflags $extra_cflags
3525 add_objcflags $extra_objcflags
3526 add_asflags $extra_cflags
3527
3528 if test -n "$sysroot"; then
3529     case "$cc_type" in
3530         gcc|llvm_gcc|clang)
3531             add_cppflags --sysroot="$sysroot"
3532             add_ldflags --sysroot="$sysroot"
3533         ;;
3534         tms470)
3535             add_cppflags -I"$sysinclude"
3536             add_ldflags  --sysroot="$sysroot"
3537         ;;
3538     esac
3539 fi
3540
3541 if test "$cpu" = host; then
3542     enabled cross_compile &&
3543         die "--cpu=host makes no sense when cross-compiling."
3544
3545     case "$cc_type" in
3546         gcc|llvm_gcc)
3547             check_native(){
3548                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3549                 sed -n "/cc1.*$1=/{
3550                             s/.*$1=\\([^ ]*\\).*/\\1/
3551                             p
3552                             q
3553                         }" $TMPE
3554             }
3555             cpu=$(check_native -march || check_native -mcpu)
3556         ;;
3557     esac
3558
3559     test "${cpu:-host}" = host &&
3560         die "--cpu=host not supported with compiler $cc"
3561 fi
3562
3563 # Deal with common $arch aliases
3564 case "$arch" in
3565     aarch64|arm64)
3566         arch="aarch64"
3567     ;;
3568     arm*)
3569         arch="arm"
3570     ;;
3571     mips*|IP*)
3572         case "$arch" in
3573         *el)
3574             add_cppflags -EL
3575             add_ldflags -EL
3576         ;;
3577         *eb)
3578             add_cppflags -EB
3579             add_ldflags -EB
3580         ;;
3581         esac
3582         arch="mips"
3583     ;;
3584     parisc*|hppa*)
3585         arch="parisc"
3586     ;;
3587     "Power Macintosh"|ppc*|powerpc*)
3588         arch="ppc"
3589     ;;
3590     s390|s390x)
3591         arch="s390"
3592     ;;
3593     sh4|sh)
3594         arch="sh4"
3595     ;;
3596     sun4u|sparc*)
3597         arch="sparc"
3598     ;;
3599     tilegx|tile-gx)
3600         arch="tilegx"
3601     ;;
3602     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3603         arch="x86"
3604     ;;
3605 esac
3606
3607 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3608 enable $arch
3609
3610 # Add processor-specific flags
3611 if enabled aarch64; then
3612
3613     case $cpu in
3614         armv*)
3615             cpuflags="-march=$cpu"
3616         ;;
3617         *)
3618             cpuflags="-mcpu=$cpu"
3619         ;;
3620     esac
3621
3622 elif enabled alpha; then
3623
3624     cpuflags="-mcpu=$cpu"
3625
3626 elif enabled arm; then
3627
3628     check_arm_arch() {
3629         check_cpp_condition stddef.h \
3630             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3631             $cpuflags
3632     }
3633
3634     probe_arm_arch() {
3635         if   check_arm_arch 4;        then echo armv4
3636         elif check_arm_arch 4T;       then echo armv4t
3637         elif check_arm_arch 5;        then echo armv5
3638         elif check_arm_arch 5E;       then echo armv5e
3639         elif check_arm_arch 5T;       then echo armv5t
3640         elif check_arm_arch 5TE;      then echo armv5te
3641         elif check_arm_arch 5TEJ;     then echo armv5te
3642         elif check_arm_arch 6;        then echo armv6
3643         elif check_arm_arch 6J;       then echo armv6j
3644         elif check_arm_arch 6K;       then echo armv6k
3645         elif check_arm_arch 6Z;       then echo armv6z
3646         elif check_arm_arch 6ZK;      then echo armv6zk
3647         elif check_arm_arch 6T2;      then echo armv6t2
3648         elif check_arm_arch 7;        then echo armv7
3649         elif check_arm_arch 7A  7_A;  then echo armv7-a
3650         elif check_arm_arch 7S;       then echo armv7-a
3651         elif check_arm_arch 7R  7_R;  then echo armv7-r
3652         elif check_arm_arch 7M  7_M;  then echo armv7-m
3653         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3654         elif check_arm_arch 8A  8_A;  then echo armv8-a
3655         fi
3656     }
3657
3658     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3659
3660     case $cpu in
3661         armv*)
3662             cpuflags="-march=$cpu"
3663             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3664         ;;
3665         *)
3666             cpuflags="-mcpu=$cpu"
3667             case $cpu in
3668                 cortex-a*)                               subarch=armv7a  ;;
3669                 cortex-r*)                               subarch=armv7r  ;;
3670                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3671                 arm11*)                                  subarch=armv6   ;;
3672                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3673                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3674                 *)                             subarch=$(probe_arm_arch) ;;
3675             esac
3676         ;;
3677     esac
3678
3679     case "$subarch" in
3680         armv5t*)    enable fast_clz                ;;
3681         armv[6-8]*) enable fast_clz fast_unaligned ;;
3682     esac
3683
3684 elif enabled avr32; then
3685
3686     case $cpu in
3687         ap7[02]0[0-2])
3688             subarch="avr32_ap"
3689             cpuflags="-mpart=$cpu"
3690         ;;
3691         ap)
3692             subarch="avr32_ap"
3693             cpuflags="-march=$cpu"
3694         ;;
3695         uc3[ab]*)
3696             subarch="avr32_uc"
3697             cpuflags="-mcpu=$cpu"
3698         ;;
3699         uc)
3700             subarch="avr32_uc"
3701             cpuflags="-march=$cpu"
3702         ;;
3703     esac
3704
3705 elif enabled bfin; then
3706
3707     cpuflags="-mcpu=$cpu"
3708
3709 elif enabled mips; then
3710
3711     cpuflags="-march=$cpu"
3712
3713 elif enabled ppc; then
3714
3715     disable ldbrx
3716
3717     case $(tolower $cpu) in
3718         601|ppc601|powerpc601)
3719             cpuflags="-mcpu=601"
3720             disable altivec
3721         ;;
3722         603*|ppc603*|powerpc603*)
3723             cpuflags="-mcpu=603"
3724             disable altivec
3725         ;;
3726         604*|ppc604*|powerpc604*)
3727             cpuflags="-mcpu=604"
3728             disable altivec
3729         ;;
3730         g3|75*|ppc75*|powerpc75*)
3731             cpuflags="-mcpu=750"
3732             disable altivec
3733         ;;
3734         g4|745*|ppc745*|powerpc745*)
3735             cpuflags="-mcpu=7450"
3736             disable vsx
3737         ;;
3738         74*|ppc74*|powerpc74*)
3739             cpuflags="-mcpu=7400"
3740             disable vsx
3741         ;;
3742         g5|970|ppc970|powerpc970)
3743             cpuflags="-mcpu=970"
3744             disable vsx
3745         ;;
3746         power[3-6]*)
3747             cpuflags="-mcpu=$cpu"
3748             disable vsx
3749         ;;
3750         power[7-8]*)
3751             cpuflags="-mcpu=$cpu"
3752             enable ldbrx
3753         ;;
3754         cell)
3755             cpuflags="-mcpu=cell"
3756             enable ldbrx
3757             disable vsx
3758         ;;
3759         e500mc)
3760             cpuflags="-mcpu=e500mc"
3761             disable altivec
3762         ;;
3763         e500v2)
3764             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3765             disable altivec
3766             disable dcbzl
3767         ;;
3768         e500)
3769             cpuflags="-mcpu=8540 -mhard-float"
3770             disable altivec
3771             disable dcbzl
3772         ;;
3773     esac
3774
3775 elif enabled sparc; then
3776
3777     case $cpu in
3778         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3779             cpuflags="-mcpu=$cpu"
3780         ;;
3781         ultrasparc*|niagara[234])
3782             cpuflags="-mcpu=$cpu"
3783         ;;
3784     esac
3785
3786 elif enabled x86; then
3787
3788     case $cpu in
3789         i[345]86|pentium)
3790             cpuflags="-march=$cpu"
3791             disable i686
3792             disable mmx
3793         ;;
3794         # targets that do NOT support nopl and conditional mov (cmov)
3795         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3796             cpuflags="-march=$cpu"
3797             disable i686
3798         ;;
3799         # targets that do support nopl and conditional mov (cmov)
3800         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3801             cpuflags="-march=$cpu"
3802             enable i686
3803             enable fast_cmov
3804         ;;
3805         # targets that do support conditional mov but on which it's slow
3806         pentium4|pentium4m|prescott|nocona)
3807             cpuflags="-march=$cpu"
3808             enable i686
3809             disable fast_cmov
3810         ;;
3811     esac
3812
3813 fi
3814
3815 if [ "$cpu" != generic ]; then
3816     add_cflags  $cpuflags
3817     add_asflags $cpuflags
3818     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3819 fi
3820
3821 # compiler sanity check
3822 check_exec <<EOF
3823 int main(void){ return 0; }
3824 EOF
3825 if test "$?" != 0; then
3826     echo "$cc is unable to create an executable file."
3827     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3828         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3829         echo "Only do this if you know what cross compiling means."
3830     fi
3831     die "C compiler test failed."
3832 fi
3833
3834 add_cppflags -D_ISOC99_SOURCE
3835
3836 # some compilers silently accept -std=c11, so we also need to check that the
3837 # version macro is defined properly
3838 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3839     add_cflags -std=c11 ||
3840     check_cflags -std=c99
3841
3842 check_cppflags -D_FILE_OFFSET_BITS=64
3843 check_cppflags -D_LARGEFILE_SOURCE
3844
3845 add_host_cppflags -D_ISOC99_SOURCE
3846 check_host_cflags -std=c99
3847 check_host_cflags -Wall
3848 check_host_cflags $host_cflags_speed
3849
3850 check_64bit(){
3851     arch32=$1
3852     arch64=$2
3853     expr=$3
3854     check_code cc "" "int test[2*($expr) - 1]" &&
3855         subarch=$arch64 || subarch=$arch32
3856 }
3857
3858 case "$arch" in
3859     aarch64|alpha|ia64)
3860         spic=$shared
3861     ;;
3862     mips)
3863         check_64bit mips mips64 '_MIPS_SIM > 1'
3864         spic=$shared
3865     ;;
3866     parisc)
3867         check_64bit parisc parisc64 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     ppc)
3871         check_64bit ppc ppc64 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     s390)
3875         check_64bit s390 s390x 'sizeof(void *) > 4'
3876         spic=$shared
3877     ;;
3878     sparc)
3879         check_64bit sparc sparc64 'sizeof(void *) > 4'
3880         spic=$shared
3881     ;;
3882     x86)
3883         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3884         if test "$subarch" = "x86_64"; then
3885             spic=$shared
3886         fi
3887     ;;
3888 esac
3889
3890 enable $subarch
3891 enabled spic && enable_weak pic
3892
3893 enabled x86_64 && objformat=elf64 || objformat="elf32"
3894
3895 # OS specific
3896 case $target_os in
3897     aix)
3898         SHFLAGS=-shared
3899         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3900         enabled shared && add_ldflags -Wl,-brtl
3901         ;;
3902     android)
3903         disable symver
3904         enable section_data_rel_ro
3905         SLIB_INSTALL_NAME='$(SLIBNAME)'
3906         SLIB_INSTALL_LINKS=
3907         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3908         ;;
3909     haiku)
3910         prefix_default="/boot/common"
3911         network_extralibs="-lnetwork"
3912         host_extralibs=
3913         ;;
3914     sunos)
3915         SHFLAGS='-shared -Wl,-h,$$(@F)'
3916         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3917         network_extralibs="-lsocket -lnsl"
3918         # When using suncc to build, the Solaris linker will mark
3919         # an executable with each instruction set encountered by
3920         # the Solaris assembler.  As our libraries contain their own
3921         # guards for processor-specific code, instead suppress
3922         # generation of the HWCAPS ELF section on Solaris x86 only.
3923         enabled_all suncc x86 &&
3924             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3925             add_ldflags -Wl,-M,mapfile
3926         nm_default='nm -P -g'
3927         version_script='-M'
3928         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3929         ;;
3930     netbsd)
3931         disable symver
3932         oss_indev_extralibs="-lossaudio"
3933         oss_outdev_extralibs="-lossaudio"
3934         ;;
3935     openbsd|bitrig)
3936         disable symver
3937         SHFLAGS='-shared'
3938         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3939         SLIB_INSTALL_LINKS=
3940         oss_indev_extralibs="-lossaudio"
3941         oss_outdev_extralibs="-lossaudio"
3942         ;;
3943     dragonfly)
3944         disable symver
3945         ;;
3946     freebsd)
3947         ;;
3948     bsd/os)
3949         add_extralibs -lpoll -lgnugetopt
3950         ;;
3951     darwin)
3952         enabled ppc && add_asflags -force_cpusubtype_ALL
3953         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3954         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3955         add_ldflags -Wl,-dynamic,-search_paths_first
3956         check_cflags -Werror=partial-availability
3957         SLIBSUF=".dylib"
3958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3960         enabled x86_64 && objformat="macho64" || objformat="macho32"
3961         enabled_any pic shared ||
3962             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3963         check_header dispatch/dispatch.h &&
3964             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3965         ;;
3966     msys*)
3967         die "Native MSYS builds are discouraged, please use the MINGW environment."
3968         ;;
3969     mingw32*|mingw64*)
3970         if test $target_os = "mingw32ce"; then
3971             disable network
3972         else
3973             target_os=mingw32
3974         fi
3975         LIBTARGET=i386
3976         if enabled x86_64; then
3977             LIBTARGET="i386:x86-64"
3978         elif enabled arm; then
3979             LIBTARGET=arm-wince
3980         fi
3981         check_ldflags -Wl,--nxcompat
3982         check_ldflags -Wl,--dynamicbase
3983         shlibdir_default="$bindir_default"
3984         SLIBPREF=""
3985         SLIBSUF=".dll"
3986         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3987         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3988         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3989         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3990         SLIB_INSTALL_LINKS=
3991         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3992         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3993         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3994         enabled x86_64 && objformat="win64" || objformat="win32"
3995         dlltool="${cross_prefix}dlltool"
3996         ranlib=:
3997         enable dos_paths
3998         ;;
3999     win32|win64)
4000         disable symver
4001         if enabled shared; then
4002             # Link to the import library instead of the normal static library
4003             # for shared libs.
4004             LD_LIB='%.lib'
4005             # Cannot build both shared and static libs with MSVC or icl.
4006             disable static
4007         fi
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF=""
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         enabled x86_64 && objformat="win64" || objformat="win32"
4020         ranlib=:
4021         enable dos_paths
4022         ;;
4023     cygwin*)
4024         target_os=cygwin
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF="cyg"
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4034         enabled x86_64 && objformat="win64" || objformat="win32"
4035         enable dos_paths
4036         ;;
4037     *-dos|freedos|opendos)
4038         network_extralibs="-lsocket"
4039         objformat="coff"
4040         enable dos_paths
4041         add_cppflags -U__STRICT_ANSI__
4042         ;;
4043     linux)
4044         enable dv1394
4045         enable section_data_rel_ro
4046         ;;
4047     irix*)
4048         target_os=irix
4049         ranlib="echo ignoring ranlib"
4050         ;;
4051     os/2*)
4052         ln_s="cp -f"
4053         objformat="aout"
4054         add_cppflags -D_GNU_SOURCE
4055         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4056         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4057         LIBSUF="_s.a"
4058         SLIBPREF=""
4059         SLIBSUF=".dll"
4060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4062         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4063             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4064             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4065             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4066             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4067         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4068             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4069         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4070         enable dos_paths
4071         ;;
4072     gnu/kfreebsd)
4073         add_cppflags -D_BSD_SOURCE
4074         ;;
4075     gnu)
4076         ;;
4077     qnx)