build: Add missing idctdsp dependency for clearvideo
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --enable-pic             build position-independent code
290   --enable-thumb           compile for Thumb instruction set
291   --enable-lto             use link-time optimization
292   --env="ENV=override"     override the environment variables
293
294 Advanced options (experts only):
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --custom-allocator=NAME  use a supported custom allocator
297   --disable-symver         disable symbol versioning
298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
299   --disable-safe-bitstream-reader
300                            disable buffer boundary checking in bitreaders
301                            (faster, but may crash)
302   --enable-sram            allow use of on-chip SRAM
303
304 Optimization options (experts only):
305   --disable-asm            disable all assembly optimizations
306   --disable-altivec        disable AltiVec optimizations
307   --disable-vsx            disable VSX optimizations
308   --disable-power8         disable POWER8 optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-xop            disable XOP optimizations
321   --disable-fma3           disable FMA3 optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-inline-asm     disable use of inline assembly
330   --disable-x86asm         disable use of standalone x86 assembly
331
332 Developer options (useful when working on Libav itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --samples=PATH           location of test samples for FATE, if not set use
338                            \$LIBAV_SAMPLES at make invocation time.
339   --enable-neon-clobber-test check NEON registers for clobbering (should be
340                            used only for debugging purposes)
341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
342                            should be used only for debugging purposes)
343   --enable-random          randomly enable/disable components
344   --disable-random
345   --enable-random=LIST     randomly enable/disable specific components or
346   --disable-random=LIST    component groups. LIST is a comma-separated list
347                            of NAME[:PROB] entries where NAME is a component
348                            (group) and PROB the probability associated with
349                            NAME (default 0.5).
350   --random-seed=VALUE      seed value for --enable/disable-random
351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
352                            (only applies to --disable-optimizations builds)
353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
354                            in the name) of tests whose result is ignored
355
356 NOTE: Object files are built at the place where configure is launched.
357 EOF
358   exit 0
359 }
360
361 quotes='""'
362
363 log(){
364     echo "$@" >> $logfile
365 }
366
367 log_file(){
368     log BEGIN $1
369     i=1
370     while read line; do
371         printf '%5s   %s\n' "${i}" "${line}"
372         i=$(($i+1))
373     done < $1 >> $logfile
374     log END $1
375 }
376
377 echolog(){
378     log "$@"
379     echo "$@"
380 }
381
382 warn(){
383     log "WARNING: $*"
384     WARNINGS="${WARNINGS}WARNING: $*\n"
385 }
386
387 die(){
388     echolog "$@"
389     cat <<EOF
390
391 If you think configure made a mistake, make sure you are using the latest
392 version from Git.  If the latest version fails, report the problem to the
393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
394 EOF
395     if disabled logging; then
396         cat <<EOF
397 Rerun configure with logging enabled (do not use --disable-logging), and
398 include the log this produces with your report.
399 EOF
400     else
401         cat <<EOF
402 Include the log file "$logfile" produced by configure as this will help
403 solving the problem.
404 EOF
405     fi
406     exit 1
407 }
408
409 # Avoid locale weirdness, besides we really just want to translate ASCII.
410 toupper(){
411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
412 }
413
414 tolower(){
415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
416 }
417
418 c_escape(){
419     echo "$*" | sed 's/["\\]/\\\0/g'
420 }
421
422 sh_quote(){
423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
425     echo "$v"
426 }
427
428 cleanws(){
429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
430 }
431
432 filter(){
433     pat=$1
434     shift
435     for v; do
436         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
437     done
438 }
439
440 filter_out(){
441     pat=$1
442     shift
443     for v; do
444         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
445     done
446 }
447
448 map(){
449     m=$1
450     shift
451     for v; do eval $m; done
452 }
453
454 add_suffix(){
455     suffix=$1
456     shift
457     for v; do echo ${v}${suffix}; done
458 }
459
460 set_all(){
461     value=$1
462     shift
463     for var in $*; do
464         eval $var=$value
465     done
466 }
467
468 set_weak(){
469     value=$1
470     shift
471     for var; do
472         eval : \${$var:=$value}
473     done
474 }
475
476 sanitize_var_name(){
477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
478 }
479
480 set_sanitized(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_sanitized(){
487     eval echo \$$(sanitize_var_name "$1")
488 }
489
490 pushvar(){
491     for pvar in $*; do
492         eval level=\${${pvar}_level:=0}
493         eval ${pvar}_${level}="\$$pvar"
494         eval ${pvar}_level=$(($level+1))
495     done
496 }
497
498 popvar(){
499     for pvar in $*; do
500         eval level=\${${pvar}_level:-0}
501         test $level = 0 && continue
502         eval level=$(($level-1))
503         eval $pvar="\${${pvar}_${level}}"
504         eval ${pvar}_level=$level
505         eval unset ${pvar}_${level}
506     done
507 }
508
509 enable(){
510     set_all yes $*
511 }
512
513 disable(){
514     set_all no $*
515 }
516
517 enable_weak(){
518     set_weak yes $*
519 }
520
521 disable_weak(){
522     set_weak no $*
523 }
524
525 enable_sanitized(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_sanitized(){
532     for var; do
533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 do_enable_deep(){
538     for var; do
539         enabled $var && continue
540         eval sel="\$${var}_select"
541         eval sgs="\$${var}_suggest"
542         pushvar var sgs
543         enable_deep $sel
544         popvar sgs
545         enable_deep_weak $sgs
546         popvar var
547     done
548 }
549
550 enable_deep(){
551     do_enable_deep $*
552     enable $*
553 }
554
555 enable_deep_weak(){
556     for var; do
557         disabled $var && continue
558         pushvar var
559         do_enable_deep $var
560         popvar var
561         enable_weak $var
562     done
563 }
564
565 enabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xyes"
568 }
569
570 disabled(){
571     test "${1#!}" = "$1" && op== || op=!=
572     eval test "x\$${1#!}" $op "xno"
573 }
574
575 enabled_all(){
576     for opt; do
577         enabled $opt || return 1
578     done
579 }
580
581 disabled_all(){
582     for opt; do
583         disabled $opt || return 1
584     done
585 }
586
587 enabled_any(){
588     for opt; do
589         enabled $opt && return 0
590     done
591 }
592
593 disabled_any(){
594     for opt; do
595         disabled $opt && return 0
596     done
597     return 1
598 }
599
600 set_default(){
601     for opt; do
602         eval : \${$opt:=\$${opt}_default}
603     done
604 }
605
606 is_in(){
607     value=$1
608     shift
609     for var in $*; do
610         [ $var = $value ] && return 0
611     done
612     return 1
613 }
614
615 check_deps(){
616     for cfg; do
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_con="\$${cfg}_conflict"
625         eval dep_sel="\$${cfg}_select"
626         eval dep_sgs="\$${cfg}_suggest"
627         eval dep_ifa="\$${cfg}_if"
628         eval dep_ifn="\$${cfg}_if_any"
629
630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
633
634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
636         enabled_all  $dep_all || disable $cfg
637         enabled_any  $dep_any || disable $cfg
638         disabled_all $dep_con || disable $cfg
639         disabled_any $dep_sel && disable $cfg
640
641         if enabled $cfg; then
642             enable_deep $dep_sel
643             enable_deep_weak $dep_sgs
644             for dep in $dep_all $dep_any $dep_sgs; do
645                 # filter out library deps, these do not belong in extralibs
646                 is_in $dep $LIBRARY_LIST && continue
647                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
648             done
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 resolve(){
710     var=$1
711     tmpvar=
712     for entry in $(eval echo \$$var); do
713         tmpvar="$tmpvar $(eval echo \$${entry})"
714     done
715     eval "$var=\"${tmpvar}\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cflags_headers(){
727     append CFLAGS_HEADERS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_objcflags(){
735     append OBJCFLAGS $($objcflags_filter "$@")
736 }
737
738 add_ldflags(){
739     append LDFLAGS $($ldflags_filter "$@")
740 }
741
742 add_ldexeflags(){
743     append LDEXEFLAGS $($ldflags_filter "$@")
744 }
745
746 add_stripflags(){
747     append STRIPFLAGS "$@"
748 }
749
750 add_extralibs(){
751     prepend extralibs $($ldflags_filter "$@")
752 }
753
754 add_host_cppflags(){
755     append host_cppflags "$@"
756 }
757
758 add_host_cflags(){
759     append host_cflags $($host_cflags_filter "$@")
760 }
761
762 add_host_ldflags(){
763     append host_ldflags $($host_ldflags_filter "$@")
764 }
765
766 add_compat(){
767     append compat_objs $1
768     shift
769     map 'add_cppflags -D$v' "$@"
770 }
771
772 check_cmd(){
773     log "$@"
774     "$@" >> $logfile 2>&1
775 }
776
777 cc_o(){
778     eval printf '%s\\n' $CC_O
779 }
780
781 cc_e(){
782     eval printf '%s\\n' $CC_E
783 }
784
785 check_cc(){
786     log check_cc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_objcc(){
793     log check_objcc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cpp(){
800     log check_cpp "$@"
801     cat > $TMPC
802     log_file $TMPC
803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
804 }
805
806 as_o(){
807     eval printf '%s\\n' $AS_O
808 }
809
810 check_as(){
811     log check_as "$@"
812     cat > $TMPS
813     log_file $TMPS
814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
815 }
816
817 check_inline_asm(){
818     log check_inline_asm "$@"
819     name="$1"
820     code="$2"
821     shift 2
822     disable $name
823     check_cc "$@" <<EOF && enable $name
824 void foo(void){ __asm__ volatile($code); }
825 EOF
826 }
827
828 check_insn(){
829     log check_insn "$@"
830     check_inline_asm ${1}_inline "\"$2\""
831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
832 }
833
834 check_x86asm(){
835     log check_x86asm "$@"
836     echo "$1" > $TMPS
837     log_file $TMPS
838     shift 1
839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
840 }
841
842 ld_o(){
843     eval printf '%s\\n' $LD_O
844 }
845
846 check_ld(){
847     log check_ld "$@"
848     flags=$(filter_out '-l*' "$@")
849     libs=$(filter '-l*' "$@")
850     check_cc $($cflags_filter $flags) || return
851     flags=$($ldflags_filter $flags)
852     libs=$($ldflags_filter $libs)
853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
854 }
855
856 print_include(){
857     hdr=$1
858     test "${hdr%.h}" = "${hdr}" &&
859         echo "#include $hdr"    ||
860         echo "#include <$hdr>"
861 }
862
863 check_code(){
864     log check_code "$@"
865     check=$1
866     headers=$2
867     code=$3
868     shift 3
869     {
870         for hdr in $headers; do
871             print_include $hdr
872         done
873         echo "int main(void) { $code; return 0; }"
874     } | check_$check "$@"
875 }
876
877 check_cppflags(){
878     log check_cppflags "$@"
879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
880 #include <stdlib.h>;
881 EOF
882 }
883
884 test_cflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_cc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_cflags(){
893     log check_cflags "$@"
894     test_cflags "$@" && add_cflags "$@"
895 }
896
897 test_objcflags(){
898     log test_objcflags "$@"
899     set -- $($objcflags_filter "$@")
900     check_objcc "$@" <<EOF
901 int x;
902 EOF
903 }
904
905 check_objcflags(){
906     log check_objcflags "$@"
907     test_objcflags "$@" && add_objcflags "$@"
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_sanitized $header
941     check_cpp "$@" <<EOF && enable_sanitized $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     check_ld "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return 0; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     check_cpp "$@" <<EOF
994 #include <$header>
995 #if !($condition)
996 #error "unsatisfied condition: $condition"
997 #endif
998 EOF
999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     check_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     arpa_inet_h
1551     cdio_paranoia_h
1552     cdio_paranoia_paranoia_h
1553     d3d11_h
1554     dispatch_dispatch_h
1555     dev_bktr_ioctl_bt848_h
1556     dev_bktr_ioctl_meteor_h
1557     dev_ic_bt8xx_h
1558     dev_video_bktr_ioctl_bt848_h
1559     dev_video_meteor_ioctl_meteor_h
1560     direct_h
1561     dlfcn_h
1562     dxva_h
1563     gsm_h
1564     io_h
1565     mach_mach_time_h
1566     machine_ioctl_bt848_h
1567     machine_ioctl_meteor_h
1568     malloc_h
1569     poll_h
1570     sndio_h
1571     soundcard_h
1572     stdatomic_h
1573     sys_mman_h
1574     sys_param_h
1575     sys_resource_h
1576     sys_select_h
1577     sys_soundcard_h
1578     sys_time_h
1579     sys_un_h
1580     sys_videoio_h
1581     unistd_h
1582     valgrind_valgrind_h
1583     windows_h
1584     winsock2_h
1585 "
1586
1587 INTRINSICS_LIST="
1588     intrinsics_neon
1589 "
1590
1591 MATH_FUNCS="
1592     atanf
1593     atan2f
1594     cbrtf
1595     cosf
1596     exp2
1597     exp2f
1598     expf
1599     isinf
1600     isnan
1601     ldexpf
1602     llrint
1603     llrintf
1604     log2
1605     log2f
1606     log10f
1607     lrint
1608     lrintf
1609     powf
1610     rint
1611     round
1612     roundf
1613     sinf
1614     trunc
1615     truncf
1616 "
1617
1618 SYSTEM_FUNCS="
1619     aligned_malloc
1620     clock_gettime
1621     closesocket
1622     CommandLineToArgvW
1623     CoTaskMemFree
1624     CryptGenRandom
1625     fcntl
1626     flt_lim
1627     fork
1628     getaddrinfo
1629     gethrtime
1630     getopt
1631     GetProcessAffinityMask
1632     GetProcessMemoryInfo
1633     GetProcessTimes
1634     getrusage
1635     GetSystemTimeAsFileTime
1636     gettimeofday
1637     gmtime_r
1638     inet_aton
1639     isatty
1640     LoadLibrary
1641     localtime_r
1642     mach_absolute_time
1643     MapViewOfFile
1644     memalign
1645     mkstemp
1646     mmap
1647     mprotect
1648     nanosleep
1649     posix_memalign
1650     sched_getaffinity
1651     SetConsoleTextAttribute
1652     setmode
1653     setrlimit
1654     Sleep
1655     strerror_r
1656     sysconf
1657     sysctl
1658     usleep
1659     VirtualAlloc
1660 "
1661
1662 TOOLCHAIN_FEATURES="
1663     as_arch_directive
1664     as_fpu_directive
1665     as_func
1666     as_object_arch
1667     asm_mod_q
1668     attribute_may_alias
1669     attribute_packed
1670     blocks_extension
1671     ebp_available
1672     ebx_available
1673     gnu_as
1674     ibm_asm
1675     inline_asm_labels
1676     pragma_deprecated
1677     symver_asm_label
1678     symver_gnu_asm
1679     vfp_args
1680     xform_asm
1681     xmm_clobbers
1682 "
1683
1684 TYPES_LIST="
1685     CONDITION_VARIABLE_Ptr
1686     socklen_t
1687     struct_addrinfo
1688     struct_group_source_req
1689     struct_ip_mreq_source
1690     struct_ipv6_mreq
1691     struct_pollfd
1692     struct_rusage_ru_maxrss
1693     struct_sockaddr_in6
1694     struct_sockaddr_sa_len
1695     struct_sockaddr_storage
1696     struct_v4l2_frmivalenum_discrete
1697 "
1698
1699 HAVE_LIST="
1700     $ARCH_EXT_LIST
1701     $(add_suffix _external $ARCH_EXT_LIST)
1702     $(add_suffix _inline   $ARCH_EXT_LIST)
1703     $ARCH_FEATURES
1704     $BUILTIN_LIST
1705     $HAVE_LIST_CMDLINE
1706     $HAVE_LIST_PUB
1707     $HEADERS_LIST
1708     $INTRINSICS_LIST
1709     $MATH_FUNCS
1710     $SYSTEM_FUNCS
1711     $THREADS_LIST
1712     $TOOLCHAIN_FEATURES
1713     $TYPES_LIST
1714     dos_paths
1715     libc_msvcrt
1716     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1717     sdl
1718     section_data_rel_ro
1719     threads
1720     vaapi_drm
1721     vaapi_x11
1722     vdpau_x11
1723 "
1724
1725 # options emitted with CONFIG_ prefix but not available on the command line
1726 CONFIG_EXTRA="
1727     aandcttables
1728     ac3dsp
1729     adts_header
1730     audio_frame_queue
1731     audiodsp
1732     blockdsp
1733     bswapdsp
1734     cabac
1735     dirac_parse
1736     dvprofile
1737     faandct
1738     faanidct
1739     fdctdsp
1740     flacdsp
1741     fmtconvert
1742     g722dsp
1743     gmp
1744     golomb
1745     gplv3
1746     h263dsp
1747     h264chroma
1748     h264dsp
1749     h264parse
1750     h264pred
1751     h264qpel
1752     hevc_ps
1753     hpeldsp
1754     huffman
1755     huffyuvdsp
1756     huffyuvencdsp
1757     idctdsp
1758     iirfilter
1759     imdct15
1760     intrax8
1761     iso_media
1762     ividsp
1763     jpegtables
1764     lgplv3
1765     libx262
1766     libxcb_shape
1767     lpc
1768     lzf
1769     me_cmp
1770     mpeg_er
1771     mpegaudio
1772     mpegaudiodsp
1773     mpegaudioheader
1774     mpegvideo
1775     mpegvideoenc
1776     mss34dsp
1777     pixblockdsp
1778     qpeldsp
1779     qsv
1780     qsvdec
1781     qsvenc
1782     rangecoder
1783     riffdec
1784     riffenc
1785     rtpdec
1786     rtpenc_chain
1787     rv34dsp
1788     sinewin
1789     snappy
1790     srtp
1791     startcode
1792     texturedsp
1793     texturedspenc
1794     tpeldsp
1795     vaapi_encode
1796     vc1dsp
1797     videodsp
1798     vp3dsp
1799     vp56dsp
1800     vp8dsp
1801     wma_freqs
1802     wmv2dsp
1803 "
1804
1805 CMDLINE_SELECT="
1806     $ARCH_EXT_LIST
1807     $CONFIG_LIST
1808     $HAVE_LIST_CMDLINE
1809     $THREADS_LIST
1810     asm
1811     cross_compile
1812     debug
1813     extra_warnings
1814     logging
1815     lto
1816     optimizations
1817     rpath
1818 "
1819
1820 PATHS_LIST="
1821     bindir
1822     datadir
1823     docdir
1824     incdir
1825     libdir
1826     mandir
1827     prefix
1828     shlibdir
1829 "
1830
1831 CMDLINE_SET="
1832     $PATHS_LIST
1833     ar
1834     arch
1835     as
1836     cc
1837     objcc
1838     cpu
1839     cross_prefix
1840     custom_allocator
1841     dep_cc
1842     env
1843     extra_version
1844     host_cc
1845     host_cflags
1846     host_extralibs
1847     host_ld
1848     host_ldflags
1849     host_os
1850     ignore_tests
1851     ld
1852     logfile
1853     malloc_prefix
1854     nm
1855     optflags
1856     pkg_config
1857     pkg_config_flags
1858     random_seed
1859     samples
1860     sysinclude
1861     sysroot
1862     target_exec
1863     target_os
1864     target_path
1865     target_samples
1866     toolchain
1867     x86asmexe
1868 "
1869
1870 CMDLINE_APPEND="
1871     extra_cflags
1872     extra_objcflags
1873     host_cppflags
1874 "
1875
1876 # code dependency declarations
1877
1878 # architecture extensions
1879
1880 armv5te_deps="arm"
1881 armv6_deps="arm"
1882 armv6t2_deps="arm"
1883 armv8_deps="aarch64"
1884 neon_deps_any="aarch64 arm"
1885 intrinsics_neon_deps="neon"
1886 vfp_deps_any="aarch64 arm"
1887 vfpv3_deps="vfp"
1888
1889 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1890
1891 altivec_deps="ppc"
1892 ppc4xx_deps="ppc"
1893 vsx_deps="altivec"
1894 power8_deps="vsx"
1895
1896 cpunop_deps="i686"
1897 x86_64_select="i686"
1898 x86_64_suggest="fast_cmov"
1899
1900 amd3dnow_deps="mmx"
1901 amd3dnowext_deps="amd3dnow"
1902 i686_deps="x86"
1903 mmx_deps="x86"
1904 mmxext_deps="mmx"
1905 sse_deps="mmxext"
1906 sse2_deps="sse"
1907 sse3_deps="sse2"
1908 ssse3_deps="sse3"
1909 sse4_deps="ssse3"
1910 sse42_deps="sse4"
1911 avx_deps="sse42"
1912 xop_deps="avx"
1913 fma3_deps="avx"
1914 fma4_deps="avx"
1915 avx2_deps="avx"
1916
1917 mmx_external_deps="x86asm"
1918 mmx_inline_deps="inline_asm"
1919 mmx_suggest="mmx_external mmx_inline"
1920
1921 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1922     eval dep=\$${ext}_deps
1923     eval ${ext}_external_deps='"${dep}_external"'
1924     eval ${ext}_inline_deps='"${dep}_inline"'
1925     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1926 done
1927
1928 aligned_stack_if_any="aarch64 ppc x86"
1929 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1930 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1931 fast_unaligned_if_any="aarch64 ppc x86"
1932 simd_align_16_if_any="altivec neon sse"
1933 simd_align_32_if_any="avx"
1934
1935 # system capabilities
1936 symver_if_any="symver_asm_label symver_gnu_asm"
1937 valgrind_backtrace_conflict="optimizations"
1938 valgrind_backtrace_deps="valgrind_valgrind_h"
1939
1940 # threading support
1941 atomics_gcc_if="sync_val_compare_and_swap"
1942 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1943 atomics_win32_if="MemoryBarrier"
1944 atomics_native_if_any="$ATOMICS_LIST"
1945 w32threads_deps="atomics_native"
1946 threads_if_any="$THREADS_LIST"
1947
1948 # subsystems
1949 dct_select="rdft"
1950 dirac_parse_select="golomb"
1951 error_resilience_select="me_cmp"
1952 faandct_deps="faan fdctdsp"
1953 faanidct_deps="faan idctdsp"
1954 h264dsp_select="startcode"
1955 hevc_ps_select="golomb"
1956 intrax8_select="blockdsp idctdsp"
1957 mdct_select="fft"
1958 rdft_select="fft"
1959 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1960 mpeg_er_select="error_resilience"
1961 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1962 mpegaudiodsp_select="dct"
1963 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1964 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1965 vc1dsp_select="h264chroma qpeldsp startcode"
1966
1967 # decoders / encoders
1968 aac_decoder_select="adts_header imdct15 mdct sinewin"
1969 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1970 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1971 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1972 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1973 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1974 adpcm_g722_decoder_select="g722dsp"
1975 adpcm_g722_encoder_select="g722dsp"
1976 aic_decoder_select="golomb idctdsp"
1977 alac_encoder_select="lpc"
1978 als_decoder_select="bswapdsp"
1979 amrnb_decoder_select="lsp"
1980 amrwb_decoder_select="lsp"
1981 amv_decoder_select="sp5x_decoder"
1982 ape_decoder_select="bswapdsp"
1983 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1984 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1985 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 atrac1_decoder_select="mdct sinewin"
1988 atrac3_decoder_select="mdct"
1989 atrac3p_decoder_select="mdct sinewin"
1990 bink_decoder_select="blockdsp hpeldsp"
1991 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1992 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1993 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1994 clearvideo_decoder_select="idctdsp"
1995 cllc_decoder_select="bswapdsp"
1996 comfortnoise_encoder_select="lpc"
1997 cook_decoder_select="audiodsp mdct sinewin"
1998 cscd_decoder_select="lzo"
1999 cscd_decoder_suggest="zlib"
2000 dca_decoder_select="fmtconvert mdct"
2001 dds_decoder_select="texturedsp"
2002 dnxhd_decoder_select="blockdsp idctdsp"
2003 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2004 dvvideo_decoder_select="dvprofile idctdsp"
2005 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2006 dxa_decoder_deps="zlib"
2007 dxv_decoder_select="lzf texturedsp"
2008 eac3_decoder_select="ac3_decoder"
2009 eac3_encoder_select="ac3_encoder"
2010 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2011 eatgq_decoder_select="aandcttables idctdsp"
2012 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2013 exr_decoder_deps="zlib"
2014 ffv1_decoder_select="rangecoder"
2015 ffv1_encoder_select="rangecoder"
2016 ffvhuff_decoder_select="huffyuv_decoder"
2017 ffvhuff_encoder_select="huffyuv_encoder"
2018 fic_decoder_select="golomb"
2019 flac_decoder_select="flacdsp"
2020 flac_encoder_select="bswapdsp flacdsp lpc"
2021 flashsv_decoder_deps="zlib"
2022 flashsv_encoder_deps="zlib"
2023 flashsv2_decoder_deps="zlib"
2024 flv_decoder_select="h263_decoder"
2025 flv_encoder_select="h263_encoder"
2026 fourxm_decoder_select="blockdsp bswapdsp"
2027 fraps_decoder_select="bswapdsp huffman"
2028 g2m_decoder_deps="zlib"
2029 g2m_decoder_select="blockdsp idctdsp jpegtables"
2030 h261_decoder_select="mpeg_er mpegvideo"
2031 h261_encoder_select="aandcttables mpegvideoenc"
2032 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2033 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2034 h263i_decoder_select="h263_decoder"
2035 h263p_encoder_select="h263_encoder"
2036 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2037 h264_decoder_suggest="error_resilience"
2038 hap_decoder_select="snappy texturedsp"
2039 hap_encoder_deps="libsnappy"
2040 hap_encoder_select="texturedspenc"
2041 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2042 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2043 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2044 iac_decoder_select="imc_decoder"
2045 imc_decoder_select="bswapdsp fft mdct sinewin"
2046 indeo3_decoder_select="hpeldsp"
2047 indeo4_decoder_select="ividsp"
2048 indeo5_decoder_select="ividsp"
2049 interplay_video_decoder_select="hpeldsp"
2050 jpegls_decoder_select="mjpeg_decoder"
2051 jv_decoder_select="blockdsp"
2052 lagarith_decoder_select="huffyuvdsp"
2053 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2054 magicyuv_decoder_select="huffyuvdsp"
2055 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2056 metasound_decoder_select="lsp mdct sinewin"
2057 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2058 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2059 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2060 mjpegb_decoder_select="mjpeg_decoder"
2061 mlp_decoder_select="mlp_parser"
2062 motionpixels_decoder_select="bswapdsp"
2063 mp1_decoder_select="mpegaudio"
2064 mp1float_decoder_select="mpegaudio"
2065 mp2_decoder_select="mpegaudio"
2066 mp2float_decoder_select="mpegaudio"
2067 mp3_decoder_select="mpegaudio"
2068 mp3adu_decoder_select="mpegaudio"
2069 mp3adufloat_decoder_select="mpegaudio"
2070 mp3float_decoder_select="mpegaudio"
2071 mp3on4_decoder_select="mpegaudio"
2072 mp3on4float_decoder_select="mpegaudio"
2073 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2074 mpc8_decoder_select="mpegaudiodsp"
2075 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2076 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2077 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2078 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2079 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2080 mpeg4_encoder_select="h263_encoder"
2081 msa1_decoder_select="mss34dsp"
2082 msmpeg4v1_decoder_select="h263_decoder"
2083 msmpeg4v2_decoder_select="h263_decoder"
2084 msmpeg4v2_encoder_select="h263_encoder"
2085 msmpeg4v3_decoder_select="h263_decoder"
2086 msmpeg4v3_encoder_select="h263_encoder"
2087 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2088 mts2_decoder_select="mss34dsp"
2089 mxpeg_decoder_select="mjpeg_decoder"
2090 nellymoser_decoder_select="mdct sinewin"
2091 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2092 nuv_decoder_select="idctdsp lzo"
2093 on2avc_decoder_select="mdct"
2094 opus_decoder_deps="avresample"
2095 opus_decoder_select="imdct15"
2096 png_decoder_deps="zlib"
2097 png_encoder_deps="zlib"
2098 png_encoder_select="huffyuvencdsp"
2099 prores_decoder_select="idctdsp"
2100 prores_encoder_select="fdctdsp"
2101 qcelp_decoder_select="lsp"
2102 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2103 ra_144_encoder_select="audio_frame_queue lpc"
2104 ralf_decoder_select="golomb"
2105 rscc_decoder_deps="zlib"
2106 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2107 rv10_encoder_select="h263_encoder"
2108 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2109 rv20_encoder_select="h263_encoder"
2110 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2111 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 screenpresso_decoder_deps="zlib"
2113 sipr_decoder_select="lsp"
2114 sp5x_decoder_select="mjpeg_decoder"
2115 svq1_decoder_select="hpeldsp"
2116 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2117 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2118 svq3_decoder_suggest="zlib"
2119 tak_decoder_select="audiodsp"
2120 tdsc_decoder_deps="zlib"
2121 tdsc_decoder_select="mjpeg_decoder"
2122 theora_decoder_select="vp3_decoder"
2123 thp_decoder_select="mjpeg_decoder"
2124 tiff_decoder_suggest="zlib"
2125 tiff_encoder_suggest="zlib"
2126 truehd_decoder_select="mlp_decoder"
2127 truemotion2_decoder_select="bswapdsp"
2128 truespeech_decoder_select="bswapdsp"
2129 tscc_decoder_deps="zlib"
2130 txd_decoder_select="texturedsp"
2131 twinvq_decoder_select="mdct lsp sinewin"
2132 utvideo_decoder_select="bswapdsp huffyuvdsp"
2133 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2134 vble_decoder_select="huffyuvdsp"
2135 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2136 vc1image_decoder_select="vc1_decoder"
2137 vorbis_decoder_select="mdct"
2138 vorbis_encoder_select="mdct"
2139 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2140 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2141 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2142 vp6a_decoder_select="vp6_decoder"
2143 vp6f_decoder_select="vp6_decoder"
2144 vp7_decoder_select="h264pred videodsp vp8dsp"
2145 vp8_decoder_select="h264pred videodsp vp8dsp"
2146 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2147 webp_decoder_select="vp8_decoder"
2148 wmapro_decoder_select="mdct sinewin wma_freqs"
2149 wmav1_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_encoder_select="mdct sinewin wma_freqs"
2151 wmav2_decoder_select="mdct sinewin wma_freqs"
2152 wmav2_encoder_select="mdct sinewin wma_freqs"
2153 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2154 wmv1_decoder_select="h263_decoder"
2155 wmv1_encoder_select="h263_encoder"
2156 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2157 wmv2_encoder_select="h263_encoder wmv2dsp"
2158 wmv3_decoder_select="vc1_decoder"
2159 wmv3image_decoder_select="wmv3_decoder"
2160 zerocodec_decoder_deps="zlib"
2161 zlib_decoder_deps="zlib"
2162 zlib_encoder_deps="zlib"
2163 zmbv_decoder_deps="zlib"
2164 zmbv_encoder_deps="zlib"
2165
2166 # hardware accelerators
2167 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2168 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2169 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2170 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2171
2172 h263_vaapi_hwaccel_deps="vaapi"
2173 h263_vaapi_hwaccel_select="h263_decoder"
2174 h264_d3d11va_hwaccel_deps="d3d11va"
2175 h264_d3d11va_hwaccel_select="h264_decoder"
2176 h264_d3d11va2_hwaccel_deps="d3d11va"
2177 h264_d3d11va2_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_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2193 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2194 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2195 hevc_dxva2_hwaccel_select="hevc_decoder"
2196 hevc_qsv_hwaccel_deps="libmfx"
2197 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2198 hevc_vaapi_hwaccel_select="hevc_decoder"
2199 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2200 hevc_vdpau_hwaccel_select="hevc_decoder"
2201 mpeg1_vdpau_hwaccel_deps="vdpau"
2202 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2203 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2204 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2205 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2206 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2207 mpeg2_dxva2_hwaccel_deps="dxva2"
2208 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_mmal_hwaccel_deps="mmal"
2210 mpeg2_qsv_hwaccel_deps="libmfx"
2211 mpeg2_vaapi_hwaccel_deps="vaapi"
2212 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2213 mpeg2_vdpau_hwaccel_deps="vdpau"
2214 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2215 mpeg4_vaapi_hwaccel_deps="vaapi"
2216 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2217 mpeg4_vdpau_hwaccel_deps="vdpau"
2218 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2219 vc1_d3d11va_hwaccel_deps="d3d11va"
2220 vc1_d3d11va_hwaccel_select="vc1_decoder"
2221 vc1_d3d11va2_hwaccel_deps="d3d11va"
2222 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2223 vc1_dxva2_hwaccel_deps="dxva2"
2224 vc1_dxva2_hwaccel_select="vc1_decoder"
2225 vc1_mmal_hwaccel_deps="mmal"
2226 vc1_qsv_hwaccel_deps="libmfx"
2227 vc1_vaapi_hwaccel_deps="vaapi"
2228 vc1_vaapi_hwaccel_select="vc1_decoder"
2229 vc1_vdpau_hwaccel_deps="vdpau"
2230 vc1_vdpau_hwaccel_select="vc1_decoder"
2231 vp8_qsv_hwaccel_deps="libmfx"
2232 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2233 vp8_vaapi_hwaccel_select="vp8_decoder"
2234 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2235 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2236 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2237 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2238 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2239
2240 # hardware-accelerated codecs
2241 nvenc_deps_any="libdl LoadLibrary"
2242 omx_deps="libdl pthreads"
2243 omx_rpi_select="omx"
2244 qsvdec_select="qsv"
2245 qsvenc_select="qsv"
2246 vaapi_encode_deps="vaapi"
2247
2248 hwupload_cuda_filter_deps="cuda"
2249 scale_npp_filter_deps="cuda libnpp"
2250
2251 h264_mmal_decoder_deps="mmal"
2252 h264_nvenc_encoder_deps="nvenc"
2253 h264_omx_encoder_deps="omx"
2254 h264_qsv_decoder_deps="libmfx"
2255 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2256 h264_qsv_encoder_deps="libmfx"
2257 h264_qsv_encoder_select="qsvenc"
2258 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2259 h264_vaapi_encoder_select="vaapi_encode golomb"
2260 hevc_nvenc_encoder_deps="nvenc"
2261 hevc_qsv_decoder_deps="libmfx"
2262 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2263 hevc_qsv_encoder_deps="libmfx"
2264 hevc_qsv_encoder_select="hevc_ps qsvenc"
2265 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2266 hevc_vaapi_encoder_select="vaapi_encode golomb"
2267 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2268 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2269 mpeg2_mmal_decoder_deps="mmal"
2270 mpeg2_qsv_decoder_deps="libmfx"
2271 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2272 mpeg2_qsv_encoder_deps="libmfx"
2273 mpeg2_qsv_encoder_select="qsvenc"
2274 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2275 mpeg2_vaapi_encoder_select="vaapi_encode"
2276 mpeg4_omx_encoder_deps="omx"
2277 vc1_mmal_decoder_deps="mmal"
2278 vc1_qsv_decoder_deps="libmfx"
2279 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2280 vp8_qsv_decoder_deps="libmfx"
2281 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2282 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2283 vp8_vaapi_encoder_select="vaapi_encode"
2284 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2285 vp9_vaapi_encoder_select="vaapi_encode"
2286
2287 nvenc_h264_encoder_select="h264_nvenc_encoder"
2288 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2289
2290 # parsers
2291 aac_parser_select="adts_header"
2292 h264_parser_select="golomb h264dsp h264parse"
2293 hevc_parser_select="hevc_ps"
2294 mpegaudio_parser_select="mpegaudioheader"
2295 mpegvideo_parser_select="mpegvideo"
2296 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2297 vc1_parser_select="vc1dsp"
2298
2299 # bitstream_filters
2300 aac_adtstoasc_bsf_select="adts_header"
2301 mjpeg2jpeg_bsf_select="jpegtables"
2302
2303 # external libraries
2304 avisynth_deps="LoadLibrary"
2305 avxsynth_deps="libdl"
2306 avisynth_demuxer_deps_any="avisynth avxsynth"
2307 avisynth_demuxer_select="riffdec"
2308 libdcadec_decoder_deps="libdcadec"
2309 libfaac_encoder_deps="libfaac"
2310 libfaac_encoder_select="audio_frame_queue"
2311 libfdk_aac_decoder_deps="libfdk_aac"
2312 libfdk_aac_encoder_deps="libfdk_aac"
2313 libfdk_aac_encoder_select="audio_frame_queue"
2314 libgsm_decoder_deps="libgsm"
2315 libgsm_encoder_deps="libgsm"
2316 libgsm_ms_decoder_deps="libgsm"
2317 libgsm_ms_encoder_deps="libgsm"
2318 libilbc_decoder_deps="libilbc"
2319 libilbc_encoder_deps="libilbc"
2320 libkvazaar_encoder_deps="libkvazaar"
2321 libmp3lame_encoder_deps="libmp3lame"
2322 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2323 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2324 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2325 libopencore_amrnb_encoder_select="audio_frame_queue"
2326 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2327 libopenh264_decoder_deps="libopenh264"
2328 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2329 libopenh264_encoder_deps="libopenh264"
2330 libopenjpeg_decoder_deps="libopenjpeg"
2331 libopenjpeg_encoder_deps="libopenjpeg"
2332 libopus_decoder_deps="libopus"
2333 libopus_encoder_deps="libopus"
2334 libopus_encoder_select="audio_frame_queue"
2335 libschroedinger_decoder_deps="libschroedinger"
2336 libschroedinger_encoder_deps="libschroedinger"
2337 libspeex_decoder_deps="libspeex"
2338 libspeex_encoder_deps="libspeex"
2339 libspeex_encoder_select="audio_frame_queue"
2340 libtheora_encoder_deps="libtheora"
2341 libtwolame_encoder_deps="libtwolame"
2342 libvo_aacenc_encoder_deps="libvo_aacenc"
2343 libvo_aacenc_encoder_select="audio_frame_queue"
2344 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2345 libvorbis_encoder_deps="libvorbis"
2346 libvorbis_encoder_select="audio_frame_queue"
2347 libvpx_vp8_decoder_deps="libvpx"
2348 libvpx_vp8_encoder_deps="libvpx"
2349 libvpx_vp9_decoder_deps="libvpx"
2350 libvpx_vp9_encoder_deps="libvpx"
2351 libwavpack_encoder_deps="libwavpack"
2352 libwavpack_encoder_select="audio_frame_queue"
2353 libwebp_encoder_deps="libwebp"
2354 libx262_encoder_deps="libx262"
2355 libx264_encoder_deps="libx264"
2356 libx265_encoder_deps="libx265"
2357 libxavs_encoder_deps="libxavs"
2358 libxvid_encoder_deps="libxvid mkstemp"
2359
2360 # demuxers / muxers
2361 ac3_demuxer_select="ac3_parser"
2362 asf_demuxer_select="riffdec"
2363 asf_muxer_select="riffenc"
2364 asf_stream_muxer_select="asf_muxer"
2365 avi_demuxer_select="iso_media riffdec"
2366 avi_muxer_select="riffenc"
2367 caf_demuxer_select="iso_media riffdec"
2368 dash_muxer_select="mp4_muxer"
2369 dirac_demuxer_select="dirac_parser"
2370 dv_demuxer_select="dvprofile"
2371 dv_muxer_select="dvprofile"
2372 dxa_demuxer_select="riffdec"
2373 eac3_demuxer_select="ac3_parser"
2374 f4v_muxer_select="mov_muxer"
2375 flac_demuxer_select="flac_parser"
2376 hds_muxer_select="flv_muxer"
2377 hls_muxer_select="mpegts_muxer"
2378 ipod_muxer_select="mov_muxer"
2379 ismv_muxer_select="mov_muxer"
2380 matroska_audio_muxer_select="matroska_muxer"
2381 matroska_demuxer_select="iso_media riffdec"
2382 matroska_demuxer_suggest="bzlib lzo zlib"
2383 matroska_muxer_select="iso_media riffenc"
2384 mmf_muxer_select="riffenc"
2385 mov_demuxer_select="iso_media riffdec"
2386 mov_demuxer_suggest="zlib"
2387 mov_muxer_select="iso_media riffenc rtpenc_chain"
2388 mp3_demuxer_select="mpegaudio_parser"
2389 mp3_muxer_select="mpegaudioheader"
2390 mp4_muxer_select="mov_muxer"
2391 mpegts_demuxer_select="iso_media"
2392 mpegts_muxer_select="adts_muxer latm_muxer"
2393 mpegtsraw_demuxer_select="mpegts_demuxer"
2394 mxf_d10_muxer_select="mxf_muxer"
2395 nut_muxer_select="riffenc"
2396 nuv_demuxer_select="riffdec"
2397 oga_muxer_select="ogg_muxer"
2398 ogg_demuxer_select="dirac_parse"
2399 opus_muxer_select="ogg_muxer"
2400 psp_muxer_select="mov_muxer"
2401 rtp_demuxer_select="sdp_demuxer"
2402 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2403 rtsp_demuxer_select="http_protocol rtpdec"
2404 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2405 sap_demuxer_select="sdp_demuxer"
2406 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2407 sdp_demuxer_select="rtpdec"
2408 smoothstreaming_muxer_select="ismv_muxer"
2409 spdif_demuxer_select="adts_header"
2410 spdif_muxer_select="adts_header"
2411 spx_muxer_select="ogg_muxer"
2412 swf_demuxer_suggest="zlib"
2413 tak_demuxer_select="tak_parser"
2414 tg2_muxer_select="mov_muxer"
2415 tgp_muxer_select="mov_muxer"
2416 w64_demuxer_select="wav_demuxer"
2417 wav_demuxer_select="riffdec"
2418 wav_muxer_select="riffenc"
2419 webm_muxer_select="iso_media riffenc"
2420 wtv_demuxer_select="mpegts_demuxer riffdec"
2421 xmv_demuxer_select="riffdec"
2422 xwma_demuxer_select="riffdec"
2423
2424 # indevs / outdevs
2425 alsa_indev_deps="alsa"
2426 alsa_outdev_deps="alsa"
2427 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2428 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2429 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2430 dv1394_indev_deps="dv1394"
2431 dv1394_indev_select="dv_demuxer"
2432 fbdev_indev_deps="linux_fb_h"
2433 jack_indev_deps="libjack"
2434 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2435 libcdio_indev_deps="libcdio"
2436 libdc1394_indev_deps="libdc1394"
2437 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2438 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2439 pulse_indev_deps="libpulse"
2440 sndio_indev_deps="sndio"
2441 sndio_outdev_deps="sndio"
2442 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2443 vfwcap_indev_deps="vfw32 vfwcap_defines"
2444 xcbgrab_indev_deps="libxcb libxcb_shape"
2445 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2446
2447 # protocols
2448 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2449 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2450 ffrtmpcrypt_protocol_select="tcp_protocol"
2451 ffrtmphttp_protocol_conflict="librtmp_protocol"
2452 ffrtmphttp_protocol_select="http_protocol"
2453 gopher_protocol_select="network"
2454 http_protocol_select="tcp_protocol"
2455 http_protocol_suggest="zlib"
2456 httpproxy_protocol_select="tcp_protocol"
2457 httpproxy_protocol_suggest="zlib"
2458 https_protocol_select="tls_protocol"
2459 https_protocol_suggest="zlib"
2460 icecast_protocol_select="http_protocol"
2461 librtmp_protocol_deps="librtmp"
2462 librtmpe_protocol_deps="librtmp"
2463 librtmps_protocol_deps="librtmp"
2464 librtmpt_protocol_deps="librtmp"
2465 librtmpte_protocol_deps="librtmp"
2466 mmsh_protocol_select="http_protocol"
2467 mmst_protocol_select="network"
2468 rtmp_protocol_conflict="librtmp_protocol"
2469 rtmp_protocol_select="tcp_protocol"
2470 rtmp_protocol_suggest="zlib"
2471 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2472 rtmpe_protocol_suggest="zlib"
2473 rtmps_protocol_conflict="librtmp_protocol"
2474 rtmps_protocol_select="tls_protocol"
2475 rtmps_protocol_suggest="zlib"
2476 rtmpt_protocol_select="ffrtmphttp_protocol"
2477 rtmpt_protocol_suggest="zlib"
2478 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2479 rtmpte_protocol_suggest="zlib"
2480 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2481 rtmpts_protocol_suggest="zlib"
2482 rtp_protocol_select="udp_protocol"
2483 sctp_protocol_deps="struct_sctp_event_subscribe"
2484 sctp_protocol_select="network"
2485 srtp_protocol_select="rtp_protocol srtp"
2486 tcp_protocol_select="network"
2487 tls_protocol_deps_any="gnutls openssl"
2488 tls_protocol_select="tcp_protocol"
2489 udp_protocol_select="network"
2490 unix_protocol_deps="sys_un_h"
2491 unix_protocol_select="network"
2492
2493 # filters
2494 asyncts_filter_deps="avresample"
2495 blackframe_filter_deps="gpl"
2496 boxblur_filter_deps="gpl"
2497 bs2b_filter_deps="libbs2b"
2498 cropdetect_filter_deps="gpl"
2499 deinterlace_qsv_filter_deps="libmfx"
2500 deinterlace_vaapi_filter_deps="vaapi"
2501 delogo_filter_deps="gpl"
2502 drawtext_filter_deps="libfreetype"
2503 drawtext_filter_suggest="libfontconfig"
2504 frei0r_filter_deps="frei0r libdl"
2505 frei0r_src_filter_deps="frei0r libdl"
2506 hdcd_filter_deps="libhdcd"
2507 hqdn3d_filter_deps="gpl"
2508 interlace_filter_deps="gpl"
2509 movie_filter_deps="avcodec avformat"
2510 ocv_filter_deps="libopencv"
2511 resample_filter_deps="avresample"
2512 scale_filter_deps="swscale"
2513 scale_qsv_filter_deps="libmfx"
2514 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2515
2516 # examples
2517 decode_audio_example_deps="avcodec avutil"
2518 decode_video_example_deps="avcodec avutil"
2519 encode_audio_example_deps="avcodec avutil"
2520 encode_video_example_deps="avcodec avutil"
2521 filter_audio_example_deps="avfilter avutil"
2522 metadata_example_deps="avformat avutil"
2523 output_example_deps="avcodec avformat avresample avutil swscale"
2524 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2525 transcode_aac_example_deps="avcodec avformat avresample"
2526
2527 # EXTRALIBS_LIST
2528 cpu_init_extralibs="pthreads_extralibs"
2529 cws2fws_extralibs="zlib_extralibs"
2530
2531 # libraries, in linking order
2532 avcodec_deps="avutil"
2533 avcodec_select="null_bsf"
2534 avdevice_deps="avformat avcodec avutil"
2535 avfilter_deps="avutil"
2536 avformat_deps="avcodec avutil"
2537 avformat_suggest="network"
2538 avresample_deps="avutil"
2539 swscale_deps="avutil"
2540
2541 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2542 avdevice_extralibs="libm_extralibs"
2543 avformat_extralibs="libm_extralibs"
2544 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2545 avresample_extralibs="libm_extralibs"
2546 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"
2547 swscale_extralibs="libm_extralibs"
2548
2549 # programs
2550 avconv_deps="avcodec avfilter avformat avresample swscale"
2551 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2552                fps_filter null_filter resample_filter scale_filter
2553                trim_filter"
2554 avconv_suggest="psapi shell32"
2555 avplay_deps="avcodec avfilter avformat avresample sdl"
2556 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2557 avplay_suggest="shell32"
2558 avprobe_deps="avcodec avformat"
2559 avprobe_suggest="shell32"
2560
2561 # documentation
2562 pod2man_deps="doc"
2563 texi2html_deps="doc"
2564
2565 # default parameters
2566
2567 logfile="avbuild/config.log"
2568
2569 # installation paths
2570 prefix_default="/usr/local"
2571 bindir_default='${prefix}/bin'
2572 datadir_default='${prefix}/share/avconv'
2573 docdir_default='${prefix}/share/doc/libav'
2574 incdir_default='${prefix}/include'
2575 libdir_default='${prefix}/lib'
2576 mandir_default='${prefix}/share/man'
2577 shlibdir_default="$libdir_default"
2578
2579 # toolchain
2580 ar_default="ar"
2581 cc_default="gcc"
2582 host_cc_default="gcc"
2583 x86asmexe_default="nasm"
2584 ln_s="ln -s -f"
2585 nm_default="nm -g"
2586 pkg_config_default=pkg-config
2587 ranlib="ranlib"
2588 strip="strip"
2589 version_script='--version-script'
2590
2591 # machine
2592 arch_default=$(uname -m)
2593 cpu="generic"
2594 intrinsics="none"
2595
2596 # OS
2597 target_os_default=$(tolower $(uname -s))
2598 host_os=$target_os_default
2599
2600 # configurable options
2601 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2602
2603 enable asm
2604 enable debug
2605 enable doc
2606 enable faan faandct faanidct
2607 enable optimizations
2608 enable safe_bitstream_reader
2609 enable static
2610 enable swscale_alpha
2611 enable valgrind_backtrace
2612
2613 # By default, enable only those hwaccels that have no external dependencies.
2614 enable d3d11va dxva2 vda vdpau
2615
2616 # internal components are enabled by default
2617 enable $EXTRALIBS_LIST
2618
2619 # Avoid external, non-system, libraries getting enabled by dependency resolution
2620 disable $EXTERNAL_LIBRARY_LIST
2621
2622 # build settings
2623 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2624 LIBPREF="lib"
2625 LIBSUF=".a"
2626 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2627 SLIBPREF="lib"
2628 SLIBSUF=".so"
2629 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2630 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2631 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2632 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2633 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2634 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2635 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2636
2637 asflags_filter=echo
2638 cflags_filter=echo
2639 ldflags_filter=echo
2640
2641 AS_C='-c'
2642 AS_O='-o $@'
2643 CC_C='-c'
2644 CC_E='-E -o $@'
2645 CC_O='-o $@'
2646 OBJCC_C='-c'
2647 OBJCC_E='-E -o $@'
2648 OBJCC_O='-o $@'
2649 X86ASM_O='-o $@'
2650 LD_O='-o $@'
2651 LD_LIB='-l%'
2652 LD_PATH='-L'
2653 HOSTCC_C='-c'
2654 HOSTCC_E='-E -o $@'
2655 HOSTCC_O='-o $@'
2656 HOSTLD_O='-o $@'
2657
2658 host_extralibs='-lm'
2659 host_cflags_filter=echo
2660 host_ldflags_filter=echo
2661
2662 target_path='$(CURDIR)'
2663
2664 # since the object filename is not given with the -MM flag, the compiler
2665 # is only able to print the basename, and we must add the path ourselves
2666 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2667 DEPFLAGS='-MM'
2668
2669 mkdir -p avbuild
2670
2671 # find source path
2672 if test -f configure; then
2673     source_path=.
2674 else
2675     source_path=$(cd $(dirname "$0"); pwd)
2676     echo "$source_path" | grep -q '[[:blank:]]' &&
2677         die "Out of tree builds are impossible with whitespace in source path."
2678     test -e "$source_path/config.h" &&
2679         die "Out of tree builds are impossible with config.h in source dir."
2680 fi
2681
2682 for v in "$@"; do
2683     r=${v#*=}
2684     l=${v%"$r"}
2685     r=$(sh_quote "$r")
2686     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2687 done
2688
2689 find_things(){
2690     thing=$1
2691     pattern=$2
2692     file=$source_path/$3
2693     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2694 }
2695
2696 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2697 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2698 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2699 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2700 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2701 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2702 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2703 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2704 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2705
2706 find_things_extern(){
2707     thing=$1
2708     pattern=$2
2709     file=$source_path/$3
2710     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2711 }
2712
2713 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2714 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2715
2716 AVCODEC_COMPONENTS_LIST="
2717     $BSF_LIST
2718     $DECODER_LIST
2719     $ENCODER_LIST
2720     $HWACCEL_LIST
2721     $PARSER_LIST
2722 "
2723
2724 AVDEVICE_COMPONENTS_LIST="
2725     $INDEV_LIST
2726     $OUTDEV_LIST
2727 "
2728
2729 AVFILTER_COMPONENTS_LIST="
2730     $FILTER_LIST
2731 "
2732
2733 AVFORMAT_COMPONENTS_LIST="
2734     $DEMUXER_LIST
2735     $MUXER_LIST
2736     $PROTOCOL_LIST
2737 "
2738
2739 ALL_COMPONENTS="
2740     $AVCODEC_COMPONENTS_LIST
2741     $AVDEVICE_COMPONENTS_LIST
2742     $AVFILTER_COMPONENTS_LIST
2743     $AVFORMAT_COMPONENTS_LIST
2744 "
2745
2746 for n in $COMPONENT_LIST; do
2747     v=$(toupper ${n%s})_LIST
2748     eval enable \$$v
2749     eval ${n}_if_any="\$$v"
2750 done
2751
2752 enable $ARCH_EXT_LIST
2753
2754 die_unknown(){
2755     echo "Unknown option \"$1\"."
2756     echo "See $0 --help for available options."
2757     exit 1
2758 }
2759
2760 print_3_columns() {
2761     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2762 }
2763
2764 show_list() {
2765     suffix=_$1
2766     shift
2767     echo $* | sed s/$suffix//g | print_3_columns
2768     exit 0
2769 }
2770
2771 rand_list(){
2772     IFS=', '
2773     set -- $*
2774     unset IFS
2775     for thing; do
2776         comp=${thing%:*}
2777         prob=${thing#$comp}
2778         prob=${prob#:}
2779         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2780         echo "prob ${prob:-0.5}"
2781         printf '%s\n' $comp
2782     done
2783 }
2784
2785 do_random(){
2786     action=$1
2787     shift
2788     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2789     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2790 }
2791
2792 for opt do
2793     optval="${opt#*=}"
2794     case "$opt" in
2795         --extra-ldflags=*)
2796             add_ldflags $optval
2797         ;;
2798         --extra-ldexeflags=*)
2799             add_ldexeflags $optval
2800         ;;
2801         --extra-libs=*)
2802             add_extralibs $optval
2803         ;;
2804         --disable-devices)
2805             disable $INDEV_LIST $OUTDEV_LIST
2806         ;;
2807         --enable-debug=*)
2808             debuglevel="$optval"
2809         ;;
2810         --disable-programs)
2811             disable $PROGRAM_LIST
2812         ;;
2813         --disable-everything)
2814             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2815         ;;
2816         --disable-all)
2817             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2818             disable $LIBRARY_LIST $PROGRAM_LIST doc
2819         ;;
2820         --enable-random|--disable-random)
2821             action=${opt%%-random}
2822             do_random ${action#--} $COMPONENT_LIST
2823         ;;
2824         --enable-random=*|--disable-random=*)
2825             action=${opt%%-random=*}
2826             do_random ${action#--} $optval
2827         ;;
2828         --enable-*=*|--disable-*=*)
2829             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2830             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2831             eval list=\$$(toupper $thing)_LIST
2832             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2833             $action $(filter "$name" $list)
2834         ;;
2835         --enable-avserver|--disable-avserver*)
2836             warn "avserver has been removed, the ${opt} option is only"\
2837                  "provided for compatibility and will be removed in the future"
2838         ;;
2839         --enable-yasm|--disable-yasm)
2840             warn "The ${opt} option is only provided for compatibility and will be\n"\
2841                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2842             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2843         ;;
2844         --enable-?*|--disable-?*)
2845             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2846             if is_in $option $COMPONENT_LIST; then
2847                 test $action = disable && action=unset
2848                 eval $action \$$(toupper ${option%s})_LIST
2849             elif is_in $option $CMDLINE_SELECT; then
2850                 $action $option
2851             else
2852                 die_unknown $opt
2853             fi
2854         ;;
2855         --list-*)
2856             NAME="${opt#--list-}"
2857             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2858             NAME=${NAME%s}
2859             eval show_list $NAME \$$(toupper $NAME)_LIST
2860         ;;
2861         --help|-h) show_help
2862         ;;
2863         --quiet|-q) quiet=yes
2864         ;;
2865         *)
2866             optname="${opt%%=*}"
2867             optname="${optname#--}"
2868             optname=$(echo "$optname" | sed 's/-/_/g')
2869             if is_in $optname $CMDLINE_SET; then
2870                 eval $optname='$optval'
2871             elif is_in $optname $CMDLINE_APPEND; then
2872                 append $optname "$optval"
2873             else
2874                 die_unknown $opt
2875             fi
2876         ;;
2877     esac
2878 done
2879
2880 for e in $env; do
2881     eval "export $e"
2882 done
2883
2884 disabled logging && logfile=/dev/null
2885
2886 # Die early if licensing-related configure options are incompatible.
2887 die_license_disabled() {
2888     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2889 }
2890
2891 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2892 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2893 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2894
2895 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2896
2897 enabled_all gnutls openssl &&
2898     die "GnuTLS and OpenSSL must not be enabled at the same time."
2899
2900 # Disable all the library-specific components if the library itself
2901 # is disabled, see AVCODEC_LIST and following _LIST variables.
2902
2903 disable_components(){
2904     disabled ${1} && disable $(
2905         eval components="\$$(toupper ${1})_COMPONENTS"
2906         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2907     )
2908 }
2909
2910 map 'disable_components $v' $LIBRARY_LIST
2911
2912 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2913 set >> $logfile
2914
2915 case "$toolchain" in
2916     *-asan)
2917         cc_default="${toolchain%-asan}"
2918         add_cflags  -fsanitize=address
2919         add_ldflags -fsanitize=address
2920     ;;
2921     *-msan)
2922         cc_default="${toolchain%-msan}"
2923         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2924         add_ldflags -fsanitize=memory
2925     ;;
2926     *-tsan)
2927         cc_default="${toolchain%-tsan}"
2928         add_cflags  -fsanitize=thread -fPIE
2929         add_ldflags -fsanitize=thread -pie
2930         case "$toolchain" in
2931             gcc-tsan)
2932                 add_cflags  -fPIC
2933                 add_ldflags -fPIC
2934                 ;;
2935         esac
2936     ;;
2937     *-usan)
2938         cc_default="${toolchain%-usan}"
2939         add_cflags  -fsanitize=undefined
2940         add_ldflags -fsanitize=undefined
2941         case "$toolchain" in
2942             clang-usan)
2943                 add_cflags -O1
2944                 ;;
2945         esac
2946     ;;
2947     valgrind-*)
2948         target_exec_default="valgrind"
2949         case "$toolchain" in
2950             valgrind-massif)
2951                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2952                 ;;
2953             valgrind-memcheck)
2954                 target_exec_args="--track-origins=yes --leak-check=full"
2955                 ;;
2956         esac
2957     ;;
2958     msvc)
2959         # Check whether the current MSVC version needs the C99 converter.
2960         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2961         # support enough of C99 to build libav. Default to the new
2962         # behaviour if the regexp was unable to match anything, since this
2963         # successfully parses the version number of existing supported
2964         # versions that require the converter (MSVC 2010 and 2012).
2965         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2966         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2967             cc_default="cl"
2968         else
2969             cc_default="c99wrap cl"
2970         fi
2971         ld_default="$source_path/compat/windows/mslink"
2972         nm_default="dumpbin -symbols"
2973         ar_default="lib"
2974         case "$arch" in
2975         arm*)
2976             as_default="armasm"
2977             ;;
2978         esac
2979         target_os_default="win32"
2980         # Use a relative path for TMPDIR. This makes sure all the
2981         # ffconf temp files are written with a relative path, avoiding
2982         # issues with msys/win32 path conversion for MSVC parameters
2983         # such as -Fo<file> or -out:<file>.
2984         TMPDIR=.
2985     ;;
2986     icl)
2987         cc_default="icl"
2988         ld_default="xilink"
2989         nm_default="dumpbin -symbols"
2990         ar_default="xilib"
2991         target_os_default="win32"
2992         TMPDIR=.
2993     ;;
2994     gcov)
2995         add_cflags  -fprofile-arcs -ftest-coverage
2996         add_ldflags -fprofile-arcs -ftest-coverage
2997     ;;
2998     llvm-cov)
2999         add_cflags -fprofile-arcs -ftest-coverage
3000         add_ldflags --coverage
3001     ;;
3002     hardened)
3003         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3004         add_cflags   -fno-strict-overflow -fstack-protector-all
3005         add_ldflags  -Wl,-z,relro -Wl,-z,now
3006     ;;
3007     ?*)
3008         die "Unknown toolchain $toolchain"
3009     ;;
3010 esac
3011
3012 test -n "$cross_prefix" && enable cross_compile
3013
3014 if enabled cross_compile; then
3015     test -n "$arch" && test -n "$target_os" ||
3016         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3017 fi
3018
3019 ar_default="${cross_prefix}${ar_default}"
3020 cc_default="${cross_prefix}${cc_default}"
3021 objcc_default="${cross_prefix}${objcc_default}"
3022 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3023 nm_default="${cross_prefix}${nm_default}"
3024 pkg_config_default="${cross_prefix}${pkg_config_default}"
3025 ranlib="${cross_prefix}${ranlib}"
3026 strip="${cross_prefix}${strip}"
3027
3028 sysinclude_default="${sysroot}/usr/include"
3029
3030 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3031 enabled cross_compile || host_cc_default=$cc
3032 set_default host_cc
3033
3034 if ! $pkg_config --version >/dev/null 2>&1; then
3035     warn "$pkg_config not found, library detection may fail."
3036     pkg_config=false
3037 fi
3038
3039 exesuf() {
3040     case $1 in
3041         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3042     esac
3043 }
3044
3045 EXESUF=$(exesuf $target_os)
3046 HOSTEXESUF=$(exesuf $host_os)
3047
3048 # set temporary file name
3049 : ${TMPDIR:=$TEMPDIR}
3050 : ${TMPDIR:=$TMP}
3051 : ${TMPDIR:=/tmp}
3052
3053 if ! check_cmd mktemp -u XXXXXX; then
3054     # simple replacement for missing mktemp
3055     # NOT SAFE FOR GENERAL USE
3056     mktemp(){
3057         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3058         echo "$tmpname"
3059         mkdir "$tmpname"
3060     }
3061 fi
3062
3063 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3064     die "Unable to create temporary directory in $TMPDIR."
3065
3066 tmpfile(){
3067     tmp="${AVTMPDIR}/test"$2
3068     (set -C; exec > $tmp) 2> /dev/null ||
3069         die "Unable to create temporary file in $AVTMPDIR."
3070     eval $1=$tmp
3071 }
3072
3073 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3074 trap 'exit 2' INT
3075
3076 tmpfile TMPASM .asm
3077 tmpfile TMPC   .c
3078 tmpfile TMPE   $EXESUF
3079 tmpfile TMPH   .h
3080 tmpfile TMPO   .o
3081 tmpfile TMPS   .S
3082 tmpfile TMPSH  .sh
3083 tmpfile TMPV   .ver
3084
3085 unset -f mktemp
3086
3087 chmod +x $TMPE
3088
3089 # make sure we can execute files in $TMPDIR
3090 cat > $TMPSH 2>> $logfile <<EOF
3091 #! /bin/sh
3092 EOF
3093 chmod +x $TMPSH >> $logfile 2>&1
3094 if ! $TMPSH >> $logfile 2>&1; then
3095     cat <<EOF
3096 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3097 variable to another directory and make sure that it is not mounted noexec.
3098 EOF
3099     die "Sanity test failed."
3100 fi
3101
3102 armasm_flags(){
3103     for flag; do
3104         case $flag in
3105             # Filter out MSVC cl.exe options from cflags that shouldn't
3106             # be passed to gas-preprocessor
3107             -M[TD]*)                                            ;;
3108             *)                  echo $flag                      ;;
3109         esac
3110    done
3111 }
3112
3113 ccc_flags(){
3114     for flag; do
3115         case $flag in
3116             -std=c99)           echo -c99                       ;;
3117             -mcpu=*)            echo -arch ${flag#*=}           ;;
3118             -mieee)             echo -ieee                      ;;
3119             -O*|-fast)          echo $flag                      ;;
3120             -fno-math-errno)    echo -assume nomath_errno       ;;
3121             -g)                 echo -g3                        ;;
3122             -Wall)              echo -msg_enable level2         ;;
3123             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3124             -Wl,*)              echo $flag                      ;;
3125             -f*|-W*)                                            ;;
3126             *)                  echo $flag                      ;;
3127         esac
3128    done
3129 }
3130
3131 cparser_flags(){
3132     for flag; do
3133         case $flag in
3134             -Wno-switch)             echo -Wno-switch-enum ;;
3135             -Wno-format-zero-length) ;;
3136             -Wdisabled-optimization) ;;
3137             -Wno-pointer-sign)       echo -Wno-other ;;
3138             *)                       echo $flag ;;
3139         esac
3140     done
3141 }
3142
3143 msvc_common_flags(){
3144     for flag; do
3145         case $flag in
3146             # In addition to specifying certain flags under the compiler
3147             # specific filters, they must be specified here as well or else the
3148             # generic catch all at the bottom will print the original flag.
3149             -Wall)                ;;
3150             -Wextra)              ;;
3151             -std=c99)             ;;
3152             # Common flags
3153             -fomit-frame-pointer) ;;
3154             -g)                   echo -Z7 ;;
3155             -fno-math-errno)      ;;
3156             -fno-common)          ;;
3157             -fno-signed-zeros)    ;;
3158             -fPIC)                ;;
3159             -mthumb)              ;;
3160             -march=*)             ;;
3161             -lz)                  echo zlib.lib ;;
3162             -lx264)               echo libx264.lib ;;
3163             -l*)                  echo ${flag#-l}.lib ;;
3164             -L*)                  echo -libpath:${flag#-L} ;;
3165             *)                    echo $flag ;;
3166         esac
3167     done
3168 }
3169
3170 msvc_flags(){
3171     msvc_common_flags "$@"
3172     for flag; do
3173         case $flag in
3174             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3175                                        -wd4554 ;;
3176             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3177                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3178                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3179                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3180         esac
3181     done
3182 }
3183
3184 icl_flags(){
3185     msvc_common_flags "$@"
3186     for flag; do
3187         case $flag in
3188             # Despite what Intel's documentation says -Wall, which is supported
3189             # on Windows, does enable remarks so disable them here.
3190             -Wall)                echo $flag -Qdiag-disable:remark ;;
3191             -std=c99)             echo -Qstd=c99 ;;
3192         esac
3193     done
3194 }
3195
3196 pgi_flags(){
3197     for flag; do
3198         case $flag in
3199             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3200             -fomit-frame-pointer) echo -Mnoframe ;;
3201             -g)                   echo -gopt ;;
3202             *)                    echo $flag ;;
3203         esac
3204     done
3205 }
3206
3207 suncc_flags(){
3208     for flag; do
3209         case $flag in
3210             -march=*|-mcpu=*)
3211                 case "${flag#*=}" in
3212                     native)                   echo -xtarget=native       ;;
3213                     v9|niagara)               echo -xarch=sparc          ;;
3214                     ultrasparc)               echo -xarch=sparcvis       ;;
3215                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3216                     i586|pentium)             echo -xchip=pentium        ;;
3217                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3218                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3219                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3220                     pentium4*)          echo -xtarget=pentium4           ;;
3221                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3222                     *-sse3)             echo -xarch=sse3                 ;;
3223                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3224                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3225                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3226                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3227                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3228                     k8|opteron|athlon64|athlon-fx)
3229                                                echo -xarch=sse2a         ;;
3230                     athlon*)                   echo -xarch=pentium_proa  ;;
3231                 esac
3232                 ;;
3233             -std=c99)             echo -xc99              ;;
3234             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3235             -fPIC)                echo -KPIC -xcode=pic32 ;;
3236             -W*,*)                echo $flag              ;;
3237             -f*-*|-W*|-mimpure-text)                      ;;
3238             -shared)              echo -G                 ;;
3239             *)                    echo $flag              ;;
3240         esac
3241     done
3242 }
3243
3244 tms470_flags(){
3245     for flag; do
3246         case $flag in
3247             -march=*|-mcpu=*)
3248                 case "${flag#*=}" in
3249                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3250                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3251                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3252                     armv6*|arm11*)          echo -mv=6   ;;
3253                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3254                                             echo -mv=5e  ;;
3255                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3256                 esac
3257                 ;;
3258             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3259             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3260             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3261             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3262             -msoft-float)   echo --float_support=vfplib       ;;
3263             -O[0-3]|-mf=*)  echo $flag                        ;;
3264             -g)             echo -g -mn                       ;;
3265             -pds=*)         echo $flag                        ;;
3266             -D*|-I*)        echo $flag                        ;;
3267             --gcc|--abi=*)  echo $flag                        ;;
3268             -me)            echo $flag                        ;;
3269         esac
3270     done
3271 }
3272
3273 probe_cc(){
3274     pfx=$1
3275     _cc=$2
3276
3277     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3278     unset _ld_o _ldflags _ld_lib _ld_path
3279     unset _depflags _DEPCMD _DEPFLAGS
3280     _flags_filter=echo
3281
3282     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3283         _type=llvm_gcc
3284         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3285         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3286         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3287         _cflags_speed='-O3'
3288         _cflags_size='-Os'
3289     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3290         _type=gcc
3291         gcc_version=$($_cc --version | head -n1)
3292         gcc_basever=$($_cc -dumpversion)
3293         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3294         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3295         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3296         if ! $_cc -dumpversion | grep -q '^2\.'; then
3297             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3298         fi
3299         _cflags_speed='-O3'
3300         _cflags_size='-Os'
3301     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3302         _type=icc
3303         _ident=$($_cc --version | head -n1)
3304         _depflags='-MMD'
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307         _cflags_noopt='-O1'
3308     elif $_cc -v 2>&1 | grep -q xlc; then
3309         _type=xlc
3310         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3311         _cflags_speed='-O5'
3312         _cflags_size='-O5 -qcompact'
3313     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3314         _type=ccc
3315         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3316         _DEPFLAGS='-M'
3317         _cflags_speed='-fast'
3318         _cflags_size='-O1'
3319         _flags_filter=ccc_flags
3320     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3321         test -d "$sysroot" || die "No valid sysroot specified."
3322         _type=armcc
3323         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3324         armcc_conf="$PWD/armcc.conf"
3325         $_cc --arm_linux_configure                 \
3326              --arm_linux_config_file="$armcc_conf" \
3327              --configure_sysroot="$sysroot"        \
3328              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3329              die "Error creating armcc configuration file."
3330         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3331         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3332         as_default="${cross_prefix}gcc"
3333         _depflags='-MMD'
3334         _cflags_speed='-O3'
3335         _cflags_size='-Os'
3336     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3337         _type=tms470
3338         _ident=$($_cc -version | head -n1 | tr -s ' ')
3339         _flags='--gcc --abi=eabi -me'
3340         _cc_e='-ppl -fe=$@'
3341         _cc_o='-fe=$@'
3342         _depflags='-ppa -ppd=$(@:.o=.d)'
3343         _cflags_speed='-O3 -mf=5'
3344         _cflags_size='-O3 -mf=2'
3345         _flags_filter=tms470_flags
3346     elif $_cc -v 2>&1 | grep -q clang; then
3347         _type=clang
3348         _ident=$($_cc --version 2>/dev/null | head -n1)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O3'
3351         _cflags_size='-Os'
3352     elif $_cc -V 2>&1 | grep -q Sun; then
3353         _type=suncc
3354         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3355         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3356         _DEPFLAGS='-xM1 -xc99'
3357         _ldflags='-std=c99'
3358         _cflags_speed='-O5'
3359         _cflags_size='-O5 -xspace'
3360         _flags_filter=suncc_flags
3361     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3362         _type=pathscale
3363         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3364         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3365         _cflags_speed='-O2'
3366         _cflags_size='-Os'
3367         _flags_filter='filter_out -Wdisabled-optimization'
3368     elif $_cc -v 2>&1 | grep -q Open64; then
3369         _type=open64
3370         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3372         _cflags_speed='-O2'
3373         _cflags_size='-Os'
3374         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3375     elif $_cc -V 2>&1 | grep -q Portland; then
3376         _type=pgi
3377         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3378         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3379         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3380         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3381         _cflags_noopt="-O1"
3382         _flags_filter=pgi_flags
3383     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3384         _type=armasm
3385         _ident=$($_cc | head -n1)
3386         # 4509: "This form of conditional instruction is deprecated"
3387         _flags="-nologo -ignore 4509"
3388         _flags_filter=armasm_flags
3389     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3390         _type=msvc
3391         _ident=$($_cc 2>&1 | head -n1)
3392         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3393         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3394         _cflags_speed="-O2"
3395         _cflags_size="-O1"
3396         _cflags_noopt="-O1"
3397         if $_cc -nologo- 2>&1 | grep -q Linker; then
3398             _ld_o='-out:$@'
3399         else
3400             _ld_o='-Fe$@'
3401         fi
3402         _cc_o='-Fo$@'
3403         _cc_e='-P -Fi$@'
3404         _flags_filter=msvc_flags
3405         _ld_lib='lib%.a'
3406         _ld_path='-libpath:'
3407         _flags='-nologo'
3408     elif $_cc 2>&1 | grep -q Intel; then
3409         _type=icl
3410         _ident=$($_cc 2>&1 | head -n1)
3411         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3412         # Not only is O3 broken on 13.x+ but it is slower on all previous
3413         # versions (tested) as well.
3414         _cflags_speed="-O2"
3415         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3416         if $_cc 2>&1 | grep -q Linker; then
3417             _ld_o='-out:$@'
3418         else
3419             _ld_o='-Fe$@'
3420         fi
3421         _cc_o='-Fo$@'
3422         _cc_e='-P'
3423         _flags_filter=icl_flags
3424         _ld_lib='lib%.a'
3425         _ld_path='-libpath:'
3426         # -Qdiag-error to make icl error when seeing certain unknown arguments
3427         _flags='-nologo -Qdiag-error:4044,10157'
3428         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3429         # with MSVC which enables it by default.
3430         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3431     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3432         # lld can emulate multiple different linkers; in ms link.exe mode,
3433         # the -? parameter gives the help output which contains an identifyable
3434         # string, while it gives an error in other modes.
3435         _type=lld-link
3436         # The link.exe mode doesn't have a switch for getting the version,
3437         # but we can force it back to gnu mode and get the version from there.
3438         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3439         _ld_o='-out:$@'
3440         _flags_filter=msvc_flags
3441         _ld_lib='lib%.a'
3442         _ld_path='-libpath:'
3443     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3444         _type=cparser
3445         _ident=$($_cc --version | head -n1)
3446         _depflags='-MMD'
3447         _cflags_speed='-O4'
3448         _cflags_size='-O2'
3449         _flags_filter=cparser_flags
3450     fi
3451
3452     eval ${pfx}_type=\$_type
3453     eval ${pfx}_ident=\$_ident
3454 }
3455
3456 set_ccvars(){
3457     eval ${1}_C=\${_cc_c-\${${1}_C}}
3458     eval ${1}_E=\${_cc_e-\${${1}_E}}
3459     eval ${1}_O=\${_cc_o-\${${1}_O}}
3460
3461     if [ -n "$_depflags" ]; then
3462         eval ${1}_DEPFLAGS=\$_depflags
3463     else
3464         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3465         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3466         eval DEP${1}FLAGS=\$_flags
3467     fi
3468 }
3469
3470 probe_cc cc "$cc"
3471 cflags_filter=$_flags_filter
3472 cflags_speed=$_cflags_speed
3473 cflags_size=$_cflags_size
3474 cflags_noopt=$_cflags_noopt
3475 add_cflags $_flags $_cflags
3476 cc_ldflags=$_ldflags
3477 set_ccvars CC
3478
3479 probe_cc hostcc "$host_cc"
3480 host_cflags_filter=$_flags_filter
3481 host_cflags_speed=$_cflags_speed
3482 add_host_cflags  $_flags $_cflags
3483 set_ccvars HOSTCC
3484
3485 test -n "$cc_type" && enable $cc_type ||
3486     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3487
3488 : ${as_default:=$cc}
3489 : ${objcc_default:=$cc}
3490 : ${dep_cc_default:=$cc}
3491 : ${ld_default:=$cc}
3492 : ${host_ld_default:=$host_cc}
3493 set_default ar as objcc dep_cc ld host_ld
3494
3495 probe_cc as "$as"
3496 asflags_filter=$_flags_filter
3497 add_asflags $_flags $_cflags
3498 set_ccvars AS
3499
3500 probe_cc objcc "$objcc"
3501 objcflags_filter=$_flags_filter
3502 add_objcflags $_flags $_cflags
3503 set_ccvars OBJC
3504
3505 probe_cc ld "$ld"
3506 ldflags_filter=$_flags_filter
3507 add_ldflags $_flags $_ldflags
3508 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3509 LD_O=${_ld_o-$LD_O}
3510 LD_LIB=${_ld_lib-$LD_LIB}
3511 LD_PATH=${_ld_path-$LD_PATH}
3512
3513 probe_cc hostld "$host_ld"
3514 host_ldflags_filter=$_flags_filter
3515 add_host_ldflags $_flags $_ldflags
3516 HOSTLD_O=${_ld_o-$HOSTLD_O}
3517
3518 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3519     probe_cc depcc "$dep_cc"
3520     CCDEP=${_DEPCMD:-$DEPCMD}
3521     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3522     DEPCCFLAGS=$_flags
3523 fi
3524
3525 if $ar 2>&1 | grep -q Microsoft; then
3526     arflags="-nologo"
3527     ar_o='-out:$@'
3528 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3529     arflags="rq"
3530     ar_o='$@'
3531 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3532     arflags='-Xany -r -c'
3533     ar_o='$@'
3534 else
3535     arflags="rc"
3536     ar_o='$@'
3537 fi
3538
3539 add_cflags $extra_cflags
3540 add_objcflags $extra_objcflags
3541 add_asflags $extra_cflags
3542
3543 if test -n "$sysroot"; then
3544     case "$cc_type" in
3545         gcc|llvm_gcc|clang)
3546             add_cppflags --sysroot="$sysroot"
3547             add_ldflags --sysroot="$sysroot"
3548         ;;
3549         tms470)
3550             add_cppflags -I"$sysinclude"
3551             add_ldflags  --sysroot="$sysroot"
3552         ;;
3553     esac
3554 fi
3555
3556 if test "$cpu" = host; then
3557     enabled cross_compile &&
3558         die "--cpu=host makes no sense when cross-compiling."
3559
3560     case "$cc_type" in
3561         gcc|llvm_gcc)
3562             check_native(){
3563                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3564                 sed -n "/cc1.*$1=/{
3565                             s/.*$1=\\([^ ]*\\).*/\\1/
3566                             p
3567                             q
3568                         }" $TMPE
3569             }
3570             cpu=$(check_native -march || check_native -mcpu)
3571         ;;
3572     esac
3573
3574     test "${cpu:-host}" = host &&
3575         die "--cpu=host not supported with compiler $cc"
3576 fi
3577
3578 # Deal with common $arch aliases
3579 case "$arch" in
3580     aarch64|arm64)
3581         arch="aarch64"
3582     ;;
3583     arm*)
3584         arch="arm"
3585     ;;
3586     mips*|IP*)
3587         case "$arch" in
3588         *el)
3589             add_cppflags -EL
3590             add_ldflags -EL
3591         ;;
3592         *eb)
3593             add_cppflags -EB
3594             add_ldflags -EB
3595         ;;
3596         esac
3597         arch="mips"
3598     ;;
3599     parisc*|hppa*)
3600         arch="parisc"
3601     ;;
3602     "Power Macintosh"|ppc*|powerpc*)
3603         arch="ppc"
3604     ;;
3605     s390|s390x)
3606         arch="s390"
3607     ;;
3608     sh4|sh)
3609         arch="sh4"
3610     ;;
3611     sun4u|sparc*)
3612         arch="sparc"
3613     ;;
3614     tilegx|tile-gx)
3615         arch="tilegx"
3616     ;;
3617     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3618         arch="x86"
3619     ;;
3620 esac
3621
3622 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3623 enable $arch
3624
3625 # Add processor-specific flags
3626 if enabled aarch64; then
3627
3628     case $cpu in
3629         armv*)
3630             cpuflags="-march=$cpu"
3631         ;;
3632         *)
3633             cpuflags="-mcpu=$cpu"
3634         ;;
3635     esac
3636
3637 elif enabled alpha; then
3638
3639     cpuflags="-mcpu=$cpu"
3640
3641 elif enabled arm; then
3642
3643     check_arm_arch() {
3644         check_cpp_condition stddef.h \
3645             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3646             $cpuflags
3647     }
3648
3649     probe_arm_arch() {
3650         if   check_arm_arch 4;        then echo armv4
3651         elif check_arm_arch 4T;       then echo armv4t
3652         elif check_arm_arch 5;        then echo armv5
3653         elif check_arm_arch 5E;       then echo armv5e
3654         elif check_arm_arch 5T;       then echo armv5t
3655         elif check_arm_arch 5TE;      then echo armv5te
3656         elif check_arm_arch 5TEJ;     then echo armv5te
3657         elif check_arm_arch 6;        then echo armv6
3658         elif check_arm_arch 6J;       then echo armv6j
3659         elif check_arm_arch 6K;       then echo armv6k
3660         elif check_arm_arch 6Z;       then echo armv6z
3661         elif check_arm_arch 6ZK;      then echo armv6zk
3662         elif check_arm_arch 6T2;      then echo armv6t2
3663         elif check_arm_arch 7;        then echo armv7
3664         elif check_arm_arch 7A  7_A;  then echo armv7-a
3665         elif check_arm_arch 7S;       then echo armv7-a
3666         elif check_arm_arch 7R  7_R;  then echo armv7-r
3667         elif check_arm_arch 7M  7_M;  then echo armv7-m
3668         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3669         elif check_arm_arch 8A  8_A;  then echo armv8-a
3670         fi
3671     }
3672
3673     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3674
3675     case $cpu in
3676         armv*)
3677             cpuflags="-march=$cpu"
3678             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3679         ;;
3680         *)
3681             cpuflags="-mcpu=$cpu"
3682             case $cpu in
3683                 cortex-a*)                               subarch=armv7a  ;;
3684                 cortex-r*)                               subarch=armv7r  ;;
3685                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3686                 arm11*)                                  subarch=armv6   ;;
3687                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3688                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3689                 *)                             subarch=$(probe_arm_arch) ;;
3690             esac
3691         ;;
3692     esac
3693
3694     case "$subarch" in
3695         armv5t*)    enable fast_clz                ;;
3696         armv[6-8]*) enable fast_clz fast_unaligned ;;
3697     esac
3698
3699 elif enabled avr32; then
3700
3701     case $cpu in
3702         ap7[02]0[0-2])
3703             subarch="avr32_ap"
3704             cpuflags="-mpart=$cpu"
3705         ;;
3706         ap)
3707             subarch="avr32_ap"
3708             cpuflags="-march=$cpu"
3709         ;;
3710         uc3[ab]*)
3711             subarch="avr32_uc"
3712             cpuflags="-mcpu=$cpu"
3713         ;;
3714         uc)
3715             subarch="avr32_uc"
3716             cpuflags="-march=$cpu"
3717         ;;
3718     esac
3719
3720 elif enabled bfin; then
3721
3722     cpuflags="-mcpu=$cpu"
3723
3724 elif enabled mips; then
3725
3726     cpuflags="-march=$cpu"
3727
3728 elif enabled ppc; then
3729
3730     disable ldbrx
3731
3732     case $(tolower $cpu) in
3733         601|ppc601|powerpc601)
3734             cpuflags="-mcpu=601"
3735             disable altivec
3736         ;;
3737         603*|ppc603*|powerpc603*)
3738             cpuflags="-mcpu=603"
3739             disable altivec
3740         ;;
3741         604*|ppc604*|powerpc604*)
3742             cpuflags="-mcpu=604"
3743             disable altivec
3744         ;;
3745         g3|75*|ppc75*|powerpc75*)
3746             cpuflags="-mcpu=750"
3747             disable altivec
3748         ;;
3749         g4|745*|ppc745*|powerpc745*)
3750             cpuflags="-mcpu=7450"
3751             disable vsx
3752         ;;
3753         74*|ppc74*|powerpc74*)
3754             cpuflags="-mcpu=7400"
3755             disable vsx
3756         ;;
3757         g5|970|ppc970|powerpc970)
3758             cpuflags="-mcpu=970"
3759             disable vsx
3760         ;;
3761         power[3-6]*)
3762             cpuflags="-mcpu=$cpu"
3763             disable vsx
3764         ;;
3765         power[7-8]*)
3766             cpuflags="-mcpu=$cpu"
3767             enable ldbrx
3768         ;;
3769         cell)
3770             cpuflags="-mcpu=cell"
3771             enable ldbrx
3772             disable vsx
3773         ;;
3774         e500mc)
3775             cpuflags="-mcpu=e500mc"
3776             disable altivec
3777         ;;
3778         e500v2)
3779             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3780             disable altivec
3781             disable dcbzl
3782         ;;
3783         e500)
3784             cpuflags="-mcpu=8540 -mhard-float"
3785             disable altivec
3786             disable dcbzl
3787         ;;
3788     esac
3789
3790 elif enabled sparc; then
3791
3792     case $cpu in
3793         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3794             cpuflags="-mcpu=$cpu"
3795         ;;
3796         ultrasparc*|niagara[234])
3797             cpuflags="-mcpu=$cpu"
3798         ;;
3799     esac
3800
3801 elif enabled x86; then
3802
3803     case $cpu in
3804         i[345]86|pentium)
3805             cpuflags="-march=$cpu"
3806             disable i686
3807             disable mmx
3808         ;;
3809         # targets that do NOT support nopl and conditional mov (cmov)
3810         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3811             cpuflags="-march=$cpu"
3812             disable i686
3813         ;;
3814         # targets that do support nopl and conditional mov (cmov)
3815         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3816             cpuflags="-march=$cpu"
3817             enable i686
3818             enable fast_cmov
3819         ;;
3820         # targets that do support conditional mov but on which it's slow
3821         pentium4|pentium4m|prescott|nocona)
3822             cpuflags="-march=$cpu"
3823             enable i686
3824             disable fast_cmov
3825         ;;
3826     esac
3827
3828 fi
3829
3830 if [ "$cpu" != generic ]; then
3831     add_cflags  $cpuflags
3832     add_asflags $cpuflags
3833     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3834 fi
3835
3836 # compiler sanity check
3837 check_exec <<EOF
3838 int main(void){ return 0; }
3839 EOF
3840 if test "$?" != 0; then
3841     echo "$cc is unable to create an executable file."
3842     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3843         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3844         echo "Only do this if you know what cross compiling means."
3845     fi
3846     die "C compiler test failed."
3847 fi
3848
3849 add_cppflags -D_ISOC99_SOURCE
3850
3851 # some compilers silently accept -std=c11, so we also need to check that the
3852 # version macro is defined properly
3853 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3854     add_cflags -std=c11 ||
3855     check_cflags -std=c99
3856
3857 check_cppflags -D_FILE_OFFSET_BITS=64
3858 check_cppflags -D_LARGEFILE_SOURCE
3859
3860 add_host_cppflags -D_ISOC99_SOURCE
3861 check_host_cflags -std=c99
3862 check_host_cflags -Wall
3863 check_host_cflags $host_cflags_speed
3864
3865 check_64bit(){
3866     arch32=$1
3867     arch64=$2
3868     expr=$3
3869     check_code cc "" "int test[2*($expr) - 1]" &&
3870         subarch=$arch64 || subarch=$arch32
3871 }
3872
3873 case "$arch" in
3874     aarch64|alpha|ia64)
3875         spic=$shared
3876     ;;
3877     mips)
3878         check_64bit mips mips64 '_MIPS_SIM > 1'
3879         spic=$shared
3880     ;;
3881     parisc)
3882         check_64bit parisc parisc64 'sizeof(void *) > 4'
3883         spic=$shared
3884     ;;
3885     ppc)
3886         check_64bit ppc ppc64 'sizeof(void *) > 4'
3887         spic=$shared
3888     ;;
3889     s390)
3890         check_64bit s390 s390x 'sizeof(void *) > 4'
3891         spic=$shared
3892     ;;
3893     sparc)
3894         check_64bit sparc sparc64 'sizeof(void *) > 4'
3895         spic=$shared
3896     ;;
3897     x86)
3898         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3899         if test "$subarch" = "x86_64"; then
3900             spic=$shared
3901         fi
3902     ;;
3903 esac
3904
3905 enable $subarch
3906 enabled spic && enable_weak pic
3907
3908 enabled x86_64 && objformat=elf64 || objformat="elf32"
3909
3910 # OS specific
3911 case $target_os in
3912     aix)
3913         SHFLAGS=-shared
3914         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3915         enabled shared && add_ldflags -Wl,-brtl
3916         ;;
3917     android)
3918         disable symver
3919         enable section_data_rel_ro
3920         SLIB_INSTALL_NAME='$(SLIBNAME)'
3921         SLIB_INSTALL_LINKS=
3922         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3923         ;;
3924     haiku)
3925         prefix_default="/boot/common"
3926         network_extralibs="-lnetwork"
3927         host_extralibs=
3928         ;;
3929     sunos)
3930         SHFLAGS='-shared -Wl,-h,$$(@F)'
3931         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3932         network_extralibs="-lsocket -lnsl"
3933         # When using suncc to build, the Solaris linker will mark
3934         # an executable with each instruction set encountered by
3935         # the Solaris assembler.  As our libraries contain their own
3936         # guards for processor-specific code, instead suppress
3937         # generation of the HWCAPS ELF section on Solaris x86 only.
3938         enabled_all suncc x86 &&
3939             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3940             add_ldflags -Wl,-M,mapfile
3941         nm_default='nm -P -g'
3942         version_script='-M'
3943         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3944         ;;
3945     netbsd)
3946         disable symver
3947         oss_indev_extralibs="-lossaudio"
3948         oss_outdev_extralibs="-lossaudio"
3949         ;;
3950     openbsd|bitrig)
3951         disable symver
3952         SHFLAGS='-shared'
3953         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3954         SLIB_INSTALL_LINKS=
3955         oss_indev_extralibs="-lossaudio"
3956         oss_outdev_extralibs="-lossaudio"
3957         ;;
3958     dragonfly)
3959         disable symver
3960         ;;
3961     freebsd)
3962         ;;
3963     bsd/os)
3964         add_extralibs -lpoll -lgnugetopt
3965         ;;
3966     darwin)
3967         enabled ppc && add_asflags -force_cpusubtype_ALL
3968         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3969         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3970         add_ldflags -Wl,-dynamic,-search_paths_first
3971         check_cflags -Werror=partial-availability
3972         SLIBSUF=".dylib"
3973         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3974         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3975         enabled x86_64 && objformat="macho64" || objformat="macho32"
3976         enabled_any pic shared ||
3977             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3978         check_header dispatch/dispatch.h &&
3979             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3980         ;;
3981     msys*)
3982         die "Native MSYS builds are discouraged, please use the MINGW environment."
3983         ;;
3984     mingw32*|mingw64*)
3985         if test $target_os = "mingw32ce"; then
3986             disable network
3987         else
3988             target_os=mingw32
3989         fi
3990         LIBTARGET=i386
3991         if enabled x86_64; then
3992             LIBTARGET="i386:x86-64"
3993         elif enabled arm; then
3994             LIBTARGET=arm-wince
3995         fi
3996         check_ldflags -Wl,--nxcompat
3997         check_ldflags -Wl,--dynamicbase
3998         shlibdir_default="$bindir_default"
3999         SLIBPREF=""
4000         SLIBSUF=".dll"
4001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4003         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4004         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4005         SLIB_INSTALL_LINKS=
4006         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4007         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4008         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4009         enabled x86_64 && objformat="win64" || objformat="win32"
4010         dlltool="${cross_prefix}dlltool"
4011         ranlib=:
4012         enable dos_paths
4013         ;;
4014     win32|win64)
4015         disable symver
4016         if enabled shared; then
4017             # Link to the import library instead of the normal static library
4018             # for shared libs.
4019             LD_LIB='%.lib'
4020             # Cannot build both shared and static libs with MSVC or icl.
4021             disable static
4022         fi
4023         shlibdir_default="$bindir_default"
4024         SLIBPREF=""
4025         SLIBSUF=".dll"
4026         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4027         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4028         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4029         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4030         SLIB_INSTALL_LINKS=
4031         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4032         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4033         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4034         enabled x86_64 && objformat="win64" || objformat="win32"
4035         ranlib=:
4036         enable dos_paths
4037         ;;
4038     cygwin*)
4039         target_os=cygwin
4040         shlibdir_default="$bindir_default"
4041         SLIBPREF="cyg"
4042         SLIBSUF=".dll"
4043         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4044         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4045         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4046         SLIB_INSTALL_LINKS=
4047         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4048         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4049         enabled x86_64 && objformat="win64" || objformat="win32"
4050         enable dos_paths
4051         ;;
4052     *-dos|freedos|opendos)
4053         network_extralibs="-lsocket"
4054         objformat="coff"
4055         enable dos_paths
4056         add_cppflags -U__STRICT_ANSI__
4057         ;;
4058     linux)
4059         enable dv1394
4060         enable section_data_rel_ro
4061         ;;
4062     irix*)
4063         target_os=irix
4064         ranlib="echo ignoring ranlib"
4065         ;;
4066     os/2*)
4067         ln_s="cp -f"
4068         objformat="aout"
4069         add_cppflags -D_GNU_SOURCE
4070         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4071         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4072         LIBSUF="_s.a"
4073         SLIBPREF=""
4074         SLIBSUF=".dll"
4075         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4076         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4077         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4078             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4079             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4080             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4081             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4082         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4083             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4084         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4085         enable dos_paths
4086         ;;
4087     gnu/kfreebsd)
4088         add_cppflags -D_BSD_SOURCE
4089         ;;
4090     gnu)
4091         ;;
4092     qnx)
4093         add_cppflags -D_QNX_SOURCE
4094         network_extralibs="-lsocket"
4095         ;;
4096     symbian)
4097         SLIBSUF=".dll"
4098         enable dos_paths
4099         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4100         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4101         add_ldflags -Wl,--target1-abs,--no-undefined \
4102                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4103                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4104         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4105                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4106                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4107         ;;
4108     osf1)
4109         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4110         ;;
4111     minix)
4112         ;;
4113     none)
4114         ;;
4115     *)
4116         die "Unknown OS '$target_os'."
4117         ;;
4118 esac
4119
4120 # determine libc flavour
4121
4122 probe_libc(){
4123     pfx=$1
4124     pfx_no_=${pfx%_}
4125     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4126     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4127         eval ${pfx}libc_type=uclibc
4128         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4129     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4130         eval ${pfx}libc_type=glibc
4131         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4132     # MinGW headers can be installed on Cygwin, so check for newlib first.
4133     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4134         eval ${pfx}libc_type=newlib
4135         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4136     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4137     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4138         eval ${pfx}libc_type=mingw64
4139         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4140         eval test \$${pfx_no_}cc_type = "gcc" &&
4141             add_${pfx}cppflags -D__printf__=__gnu_printf__
4142     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4143          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4144         eval ${pfx}libc_type=mingw32
4145         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4146             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4147             die "ERROR: MinGW32 runtime version must be >= 3.15."
4148         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4149         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4150             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4151         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4152             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4153         eval test \$${pfx_no_}cc_type = "gcc" &&
4154             add_${pfx}cppflags -D__printf__=__gnu_printf__
4155     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4156         eval ${pfx}libc_type=msvcrt
4157         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4158             if [ "$pfx" = host_ ]; then
4159                 add_host_cppflags -Dsnprintf=_snprintf
4160             else
4161                 add_compat strtod.o strtod=avpriv_strtod
4162                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4163                                              _snprintf=avpriv_snprintf  \
4164                                              vsnprintf=avpriv_vsnprintf
4165             fi
4166         fi
4167         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4168         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4169         # 0x601 by default unless something else is set by the user.
4170         # This can easily lead to us detecting functions only present
4171         # in such new versions and producing binaries requiring windows 7.0.
4172         # Therefore explicitly set the default to XP unless the user has
4173         # set something else on the command line.
4174         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4175         # family. For these cases, configure is free to use any functions
4176         # found in the SDK headers by default. (Alternatively, we could force
4177         # _WIN32_WINNT to 0x0602 in that case.)
4178         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4179             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4180 #ifdef WINAPI_FAMILY
4181 #include <winapifamily.h>
4182 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4183 #error not desktop
4184 #endif
4185 #endif
4186 EOF
4187         if [ "$pfx" = "" ]; then
4188             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4189         fi
4190     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4191         eval ${pfx}libc_type=klibc
4192     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4193         eval ${pfx}libc_type=bionic
4194     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4195         eval ${pfx}libc_type=solaris
4196         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4197     else
4198         eval ${pfx}libc_type=default
4199         add_${pfx}cppflags -D_DEFAULT_SOURCE
4200     fi
4201 }
4202
4203 probe_libc
4204 test -n "$libc_type" && enable libc_$libc_type
4205 probe_libc host_
4206 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4207
4208 # hacks for compiler/libc/os combinations
4209
4210 case $libc_type in
4211     bionic)
4212         add_compat strtod.o strtod=avpriv_strtod
4213         ;;
4214     glibc)
4215         if enabled tms470; then
4216             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4217             add_cppflags -D__USER_LABEL_PREFIX__=
4218             add_cppflags -D__builtin_memset=memset
4219             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4220             add_cflags   -pds=48    # incompatible redefinition of macro
4221         elif enabled ccc; then
4222             add_ldflags -Wl,-z,now  # calls to libots crash without this
4223         fi
4224         ;;
4225 esac
4226
4227 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4228     add_cppflags '-I\$(SRC_PATH)/compat/float'
4229
4230 esc(){
4231     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4232 }
4233
4234 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4235
4236 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4237
4238 set_default $PATHS_LIST
4239 set_default nm
4240
4241 # we need to build at least one lib type
4242 if ! enabled_any static shared; then
4243     cat <<EOF
4244 At least one library type must be built.
4245 Specify --enable-static to build the static libraries or --enable-shared to
4246 build the shared libraries as well. To only build the shared libraries specify
4247 --disable-static in addition to --enable-shared.
4248 EOF
4249     exit 1
4250 fi
4251
4252 disabled optimizations || check_cflags -fomit-frame-pointer
4253
4254 enable_weak_pic() {
4255     disabled pic && return
4256     enable pic
4257     add_cppflags -DPIC
4258     case "$target_os" in
4259     mingw*|cygwin*)
4260         ;;
4261     *)
4262         add_cflags -fPIC
4263         ;;
4264     esac
4265     add_asflags  -fPIC
4266 }
4267
4268 enabled pic && enable_weak_pic
4269
4270 check_cc <<EOF || die "Symbol mangling check failed."
4271 int ff_extern;
4272 EOF
4273 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4274 extern_prefix=${sym%%ff_extern*}
4275
4276 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4277
4278 _restrict=
4279 for restrict_keyword in restrict __restrict__ __restrict; do
4280     check_cc <<EOF && _restrict=$restrict_keyword && break
4281 void foo(char * $restrict_keyword p);
4282 EOF
4283 done
4284
4285 check_cc <<EOF && enable pragma_deprecated
4286 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4287 EOF
4288
4289 check_cc <<EOF && enable attribute_packed
4290 struct { int x; } __attribute__((packed)) x;
4291 EOF
4292
4293 check_cc <<EOF && enable attribute_may_alias
4294 union { int x; } __attribute__((may_alias)) x;
4295 EOF
4296
4297 check_cc <<EOF || die "endian test failed"
4298 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4299 EOF
4300 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4301
4302 check_gas() {
4303     log "check_gas using '$as' as AS"
4304     # :vararg is used on aarch64, arm and ppc altivec
4305     check_as <<EOF || return 1
4306 .macro m n, y:vararg=0
4307 \n: .int \y
4308 .endm
4309 m x
4310 EOF
4311     # .altmacro is only used in arm asm
4312     ! enabled arm || check_as <<EOF || return 1
4313 .altmacro
4314 EOF
4315     enable gnu_as
4316     return 0
4317 }
4318
4319 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4320     nogas=:
4321     enabled_any arm aarch64 && nogas=die
4322     enabled_all ppc altivec && nogas=warn
4323     as_noop=-v
4324
4325     case $as_type in
4326         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4327         gcc)  gaspp_as_type=gas ;;
4328         *)    gaspp_as_type=$as_type ;;
4329     esac
4330
4331     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4332
4333     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4334         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4335
4336     if ! check_gas ; then
4337         as=${gas:=$as}
4338         check_gas || \
4339             $nogas "GNU assembler not found, install/update gas-preprocessor"
4340     fi
4341
4342     check_as <<EOF && enable as_func
4343 .func test
4344 .endfunc
4345 EOF
4346 fi
4347
4348 check_inline_asm inline_asm_labels '"1:\n"'
4349
4350 if enabled aarch64; then
4351     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4352     # internal assembler in clang 3.3 does not support this instruction
4353     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4354     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4355
4356     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4357
4358 elif enabled alpha; then
4359
4360     check_cflags -mieee
4361
4362 elif enabled arm; then
4363
4364     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4365     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4366     enabled thumb && check_cflags -mthumb || check_cflags -marm
4367
4368     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4369         enable vfp_args
4370     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4371         enable vfp_args
4372     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4373         case "${cross_prefix:-$cc}" in
4374             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4375             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4376 __asm__ (".eabi_attribute 28, 1");
4377 int main(void) { return 0; }
4378 EOF
4379         esac
4380         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4381     fi
4382
4383     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4384     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4385     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4386     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4387     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4388     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4389
4390     [ $target_os = linux ] || [ $target_os = android ] ||
4391         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4392             $ARCH_EXT_LIST_ARM
4393
4394     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4395
4396     check_as <<EOF && enable as_arch_directive
4397 .arch armv7-a
4398 EOF
4399     check_as <<EOF && enable as_fpu_directive
4400 .fpu neon
4401 EOF
4402
4403     # llvm's integrated assembler supports .object_arch from llvm 3.5
4404     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4405         check_as <<EOF && enable as_object_arch
4406 .object_arch armv4
4407 EOF
4408
4409     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4410
4411 elif enabled mips; then
4412
4413     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4414
4415     # make sure that only an instruction set is enabled
4416     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4417
4418     if enabled mips64; then
4419         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4420             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4421                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4422     else
4423         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4424             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4425                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4426     fi
4427
4428 elif enabled parisc; then
4429
4430     if enabled gcc; then
4431         case $($cc -dumpversion) in
4432             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4433         esac
4434     fi
4435
4436 elif enabled ppc; then
4437
4438     enable local_aligned_8 local_aligned_16 local_aligned_32
4439
4440     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4441     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4442     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4443     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4444
4445     if enabled altivec; then
4446         check_cflags -maltivec -mabi=altivec
4447
4448         # check if our compiler supports Motorola AltiVec C API
4449         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4450                                  vector signed int v2 = (vector signed int) { 1 };
4451                                  v1 = vec_add(v1, v2);" ||
4452             disable altivec
4453
4454         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4455     fi
4456
4457     if enabled vsx; then
4458         check_cflags -mvsx &&
4459         check_code cc altivec.h "int v[4] = { 0 };
4460                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4461             disable vsx
4462     fi
4463
4464     if enabled power8; then
4465         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4466     fi
4467
4468 elif enabled x86; then
4469
4470     check_builtin rdtsc    intrin.h   "__rdtsc()"
4471     check_builtin mm_empty mmintrin.h "_mm_empty()"
4472
4473     enable local_aligned_8 local_aligned_16 local_aligned_32
4474
4475     # check whether EBP is available on x86
4476     # As 'i' is stored on the stack, this program will crash
4477     # if the base pointer is used to access it because the
4478     # base pointer is cleared in the inline assembly code.
4479     check_exec_crash <<EOF && enable ebp_available
4480 volatile int i=0;
4481 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4482 return i;
4483 EOF
4484
4485     # check whether EBX is available on x86
4486     check_inline_asm ebx_available '""::"b"(0)' &&
4487         check_inline_asm ebx_available '"":::"%ebx"'
4488
4489     # check whether xmm clobbers are supported
4490     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4491
4492     # check whether binutils is new enough to compile SSSE3/MMXEXT
4493     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4494     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4495
4496     probe_x86asm(){
4497         x86asmexe_probe=$1
4498         if check_cmd $x86asmexe_probe -v; then
4499             x86asmexe=$x86asmexe_probe
4500             x86asm_type=nasm
4501             x86asm_debug="-g -F dwarf"
4502             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4503         elif check_cmd $x86asmexe_probe --version; then
4504             x86asmexe=$x86asmexe_probe
4505             x86asm_type=yasm
4506             x86asm_debug="-g dwarf2"
4507             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4508         fi
4509         check_x86asm "movbe ecx, [5]" && enable x86asm
4510     }
4511
4512     if ! disabled_any asm mmx x86asm; then
4513         disable x86asm
4514         for program in $x86asmexe nasm yasm; do
4515             probe_x86asm $program && break
4516         done
4517         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4518         X86ASMFLAGS="-f $objformat"
4519         enabled pic               && append X86ASMFLAGS "-DPIC"
4520         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4521         case "$objformat" in
4522             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4523         esac
4524
4525         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4526         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4527         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4528         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4529         check_x86asm "CPU amdnop"                      || disable cpunop
4530     fi
4531
4532     case "$cpu" in
4533         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4534             disable fast_clz
4535         ;;
4536     esac
4537
4538 fi
4539
4540 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4541
4542 check_ldflags -Wl,--as-needed
4543
4544 if ! disabled network; then
4545     check_func getaddrinfo $network_extralibs
4546     check_func inet_aton $network_extralibs
4547
4548     check_type netdb.h "struct addrinfo"
4549     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4550     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4551     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4552     check_type poll.h "struct pollfd"
4553     check_type netinet/sctp.h "struct sctp_event_subscribe"
4554     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4555     check_type netinet/in.h "struct sockaddr_in6"
4556     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4557     check_type "sys/types.h sys/socket.h" socklen_t
4558
4559     # Prefer arpa/inet.h over winsock2
4560     if check_header arpa/inet.h ; then
4561         check_func closesocket
4562     elif check_header winsock2.h ; then
4563         check_func_headers winsock2.h closesocket -lws2 &&
4564             network_extralibs="-lws2" ||
4565         { check_func_headers winsock2.h closesocket -lws2_32 &&
4566             network_extralibs="-lws2_32"; } || disable winsock2_h network
4567         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4568
4569         check_type ws2tcpip.h socklen_t
4570         check_type ws2tcpip.h "struct addrinfo"
4571         check_type ws2tcpip.h "struct group_source_req"
4572         check_type ws2tcpip.h "struct ip_mreq_source"
4573         check_type ws2tcpip.h "struct ipv6_mreq"
4574         check_type winsock2.h "struct pollfd"
4575         check_struct winsock2.h "struct sockaddr" sa_len
4576         check_type ws2tcpip.h "struct sockaddr_in6"
4577         check_type ws2tcpip.h "struct sockaddr_storage"
4578     else
4579         disable network
4580     fi
4581 fi
4582
4583 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4584 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4585 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4586 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4587
4588 case "$custom_allocator" in
4589     jemalloc)
4590         # jemalloc by default does not use a prefix
4591         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4592     ;;
4593     tcmalloc)
4594         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4595         malloc_prefix=tc_
4596     ;;
4597 esac
4598
4599 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4600 check_func  ${malloc_prefix}memalign            && enable memalign
4601 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4602
4603 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4604     { check_lib clock_gettime time.h clock_gettime ||
4605       check_lib clock_gettime time.h clock_gettime -lrt; }
4606
4607 check_func  fcntl
4608 check_func  fork
4609 check_func  gethrtime
4610 check_func  getopt
4611 check_func  getrusage
4612 check_func  gettimeofday
4613 check_func  gmtime_r
4614 check_func  isatty
4615 check_func  localtime_r
4616 check_func  mach_absolute_time
4617 check_func  mkstemp
4618 check_func  mmap
4619 check_func  mprotect
4620 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4621 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4622 check_func  sched_getaffinity
4623 check_func  setrlimit
4624 check_func  strerror_r
4625 check_func  sysconf
4626 check_func  sysctl
4627 check_func  usleep
4628
4629 check_func_headers io.h setmode
4630 check_func_headers stdlib.h getenv
4631
4632 check_func_headers windows.h GetProcessAffinityMask
4633 check_func_headers windows.h GetProcessTimes
4634 check_func_headers windows.h GetSystemTimeAsFileTime
4635 check_func_headers windows.h LoadLibrary
4636 check_func_headers windows.h MapViewOfFile
4637 check_func_headers windows.h SetConsoleTextAttribute
4638 check_func_headers windows.h Sleep
4639 check_func_headers windows.h VirtualAlloc
4640 check_struct windows.h "CONDITION_VARIABLE" Ptr
4641
4642 check_header d3d11.h
4643 check_header direct.h
4644 check_header dlfcn.h
4645 check_header dxva.h
4646 check_header dxva2api.h
4647 check_header io.h
4648 check_header mach/mach_time.h
4649 check_header malloc.h
4650 check_header poll.h
4651 check_header sys/mman.h
4652 check_header sys/param.h
4653 check_header sys/resource.h
4654 check_header sys/select.h
4655 check_header sys/time.h
4656 check_header sys/un.h
4657 check_header unistd.h
4658 check_header valgrind/valgrind.h
4659 check_header VideoDecodeAcceleration/VDADecoder.h
4660 check_header windows.h
4661
4662 # it seems there are versions of clang in some distros that try to use the
4663 # gcc headers, which explodes for stdatomic
4664 # so we also check that atomics actually work here
4665 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4666
4667 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4668 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4669 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4670 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4671
4672 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4673
4674 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4675 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4676 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4677
4678 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4679 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4680 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4681 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4682 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4683 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4684 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4685 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4686 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4687
4688 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4689
4690 if ! disabled w32threads && ! enabled pthreads; then
4691     check_lib w32threads "windows.h process.h" _beginthreadex
4692 fi
4693
4694 # check for some common methods of building with pthread support
4695 # do this before the optional library checks as some of them require pthreads
4696 if ! disabled pthreads && ! enabled w32threads; then
4697     if check_lib pthreads pthread.h pthread_join -pthread; then
4698         add_cflags -pthread
4699     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4700         add_cflags -pthreads
4701     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4702         :
4703     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4704         :
4705     elif check_func pthread_join; then
4706         enable pthreads
4707     fi
4708 fi
4709
4710 enabled pthreads &&
4711     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4712
4713 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4714 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4715
4716 # On some systems dynamic loading requires no extra linker flags
4717 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4718
4719 check_lib libm math.h sin -lm
4720
4721 atan2f_args=2
4722 ldexpf_args=2
4723 powf_args=2
4724
4725 for func in $MATH_FUNCS; do
4726     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4727 done
4728
4729 # these are off by default, so fail if requested and not available
4730 enabled avisynth          && require_header avisynth/avisynth_c.h
4731 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4732 enabled cuda              && require cuda cuda.h cuInit -lcuda
4733 enabled frei0r            && require_header frei0r.h
4734 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4735 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4736 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4737 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4738 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4739 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4740 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4741 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4742 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4743                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4744                                done || die "ERROR: libgsm not found"; }
4745 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4746 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4747 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4748 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4749 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4750 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4751 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4752 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4753 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4754 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4755 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4756                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4757 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4758 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4759 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4760 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4761 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4762 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4763 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4764 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4765 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4766 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4767 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4768 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4769                              { enabled libvpx_vp8_decoder &&
4770                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4771                                enabled libvpx_vp8_encoder &&
4772                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4773                                enabled libvpx_vp9_decoder &&
4774                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4775                                enabled libvpx_vp9_encoder &&
4776                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4777                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4778                                    die "libvpx enabled but no supported decoders/encoders found"
4779                              }
4780 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4781 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4782 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4783                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4784                              { check_cpp_condition x264.h "X264_MPEG2" &&
4785                                enable libx262; }
4786 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4787                              require_cpp_condition x265.h "X265_BUILD >= 57"
4788 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4789 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4790 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4791                                { ! enabled cross_compile &&
4792                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4793                                  add_ldflags -L/opt/vc/lib/ &&
4794                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4795                                die "ERROR: mmal not found" &&
4796                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4797 enabled omx               && require_header OMX_Core.h
4798 enabled omx_rpi           && { check_header OMX_Core.h ||
4799                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4800                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4801 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4802                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4803                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4804                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4805                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4806                                die "ERROR: openssl not found"; }
4807
4808 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4809
4810 if enabled nvenc; then
4811     require_header nvEncodeAPI.h
4812     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4813 fi
4814
4815 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4816 if enabled avplay; then
4817     CFLAGS_SAVE=$CFLAGS
4818     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4819     sdl_cflags=$pkg_cflags
4820     CFLAGS=$CFLAGS_SAVE
4821 fi
4822
4823 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4824 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4825
4826 check_header linux/fb.h
4827 check_header linux/videodev2.h