lavc: Add h264_redundant_pps bitstream filter
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-cuvid   Nvidia CUVID video decode acceleration
241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
244   --enable-libnpp  Nvidia CUDA processing
245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
246   --enable-nvenc   Nvidia video encoding
247   --enable-omx     OpenMAX IL
248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
250   --enable-vda     Apple Video Decode Acceleration [auto]
251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
252
253 Toolchain options:
254   --arch=ARCH              select architecture [$arch]
255   --cpu=CPU                select the minimum required CPU (affects
256                            instruction selection, may crash on older CPUs)
257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
258   --enable-cross-compile   assume a cross-compiler is used
259   --sysroot=PATH           root of cross-build tree
260   --sysinclude=PATH        location of cross-build system headers
261   --target-os=OS           compiler targets OS [$target_os]
262   --target-exec=CMD        command to run executables on target
263   --target-path=DIR        path to view of build directory on target
264   --target-samples=DIR     path to samples directory on target
265   --toolchain=NAME         set tool defaults according to NAME
266   --nm=NM                  use nm tool
267   --ar=AR                  use archive tool AR [$ar_default]
268   --as=AS                  use assembler AS [$as_default]
269   --cc=CC                  use C compiler CC [$cc_default]
270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
272   --ld=LD                  use linker LD
273   --x86asmexe=X86ASM       use x86 assembler X86ASM
274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
276   --host-cc=HOSTCC         use host C compiler HOSTCC
277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
279   --host-ld=HOSTLD         use host linker HOSTLD
280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
281   --host-libs=HLIBS        use libs HLIBS when linking for host
282   --host-os=OS             compiler host OS [$target_os]
283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --enable-pic             build position-independent code
292   --enable-thumb           compile for Thumb instruction set
293   --enable-lto             use link-time optimization
294   --env="ENV=override"     override the environment variables
295
296 Advanced options (experts only):
297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
298   --custom-allocator=NAME  use a supported custom allocator
299   --disable-symver         disable symbol versioning
300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
301   --disable-safe-bitstream-reader
302                            disable buffer boundary checking in bitreaders
303                            (faster, but may crash)
304   --enable-sram            allow use of on-chip SRAM
305
306 Optimization options (experts only):
307   --disable-asm            disable all assembly optimizations
308   --disable-altivec        disable AltiVec optimizations
309   --disable-vsx            disable VSX optimizations
310   --disable-power8         disable POWER8 optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-xop            disable XOP optimizations
323   --disable-fma3           disable FMA3 optimizations
324   --disable-fma4           disable FMA4 optimizations
325   --disable-avx2           disable AVX2 optimizations
326   --disable-armv5te        disable armv5te optimizations
327   --disable-armv6          disable armv6 optimizations
328   --disable-armv6t2        disable armv6t2 optimizations
329   --disable-vfp            disable VFP optimizations
330   --disable-neon           disable NEON optimizations
331   --disable-inline-asm     disable use of inline assembly
332   --disable-x86asm         disable use of standalone x86 assembly
333
334 Developer options (useful when working on Libav itself):
335   --disable-debug          disable debugging symbols
336   --enable-debug=LEVEL     set the debug level [$debuglevel]
337   --disable-optimizations  disable compiler optimizations
338   --enable-extra-warnings  enable more compiler warnings
339   --samples=PATH           location of test samples for FATE, if not set use
340                            \$LIBAV_SAMPLES at make invocation time.
341   --enable-neon-clobber-test check NEON registers for clobbering (should be
342                            used only for debugging purposes)
343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
344                            should be used only for debugging purposes)
345   --enable-random          randomly enable/disable components
346   --disable-random
347   --enable-random=LIST     randomly enable/disable specific components or
348   --disable-random=LIST    component groups. LIST is a comma-separated list
349                            of NAME[:PROB] entries where NAME is a component
350                            (group) and PROB the probability associated with
351                            NAME (default 0.5).
352   --random-seed=VALUE      seed value for --enable/disable-random
353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
354                            (only applies to --disable-optimizations builds)
355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
356                            in the name) of tests whose result is ignored
357
358 NOTE: Object files are built at the place where configure is launched.
359 EOF
360   exit 0
361 }
362
363 quotes='""'
364
365 log(){
366     echo "$@" >> $logfile
367 }
368
369 log_file(){
370     log BEGIN $1
371     i=1
372     while read line; do
373         printf '%5s   %s\n' "${i}" "${line}"
374         i=$(($i+1))
375     done < $1 >> $logfile
376     log END $1
377 }
378
379 echolog(){
380     log "$@"
381     echo "$@"
382 }
383
384 warn(){
385     log "WARNING: $*"
386     WARNINGS="${WARNINGS}WARNING: $*\n"
387 }
388
389 die(){
390     echolog "$@"
391     cat <<EOF
392
393 If you think configure made a mistake, make sure you are using the latest
394 version from Git.  If the latest version fails, report the problem to the
395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
396 EOF
397     if disabled logging; then
398         cat <<EOF
399 Rerun configure with logging enabled (do not use --disable-logging), and
400 include the log this produces with your report.
401 EOF
402     else
403         cat <<EOF
404 Include the log file "$logfile" produced by configure as this will help
405 solving the problem.
406 EOF
407     fi
408     exit 1
409 }
410
411 # Avoid locale weirdness, besides we really just want to translate ASCII.
412 toupper(){
413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
414 }
415
416 tolower(){
417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
418 }
419
420 c_escape(){
421     echo "$*" | sed 's/["\\]/\\\0/g'
422 }
423
424 sh_quote(){
425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
427     echo "$v"
428 }
429
430 cleanws(){
431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
432 }
433
434 filter(){
435     pat=$1
436     shift
437     for v; do
438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
439     done
440 }
441
442 filter_out(){
443     pat=$1
444     shift
445     for v; do
446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
447     done
448 }
449
450 map(){
451     m=$1
452     shift
453     for v; do eval $m; done
454 }
455
456 add_suffix(){
457     suffix=$1
458     shift
459     for v; do echo ${v}${suffix}; done
460 }
461
462 set_all(){
463     value=$1
464     shift
465     for var in $*; do
466         eval $var=$value
467     done
468 }
469
470 set_weak(){
471     value=$1
472     shift
473     for var; do
474         eval : \${$var:=$value}
475     done
476 }
477
478 sanitize_var_name(){
479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
480 }
481
482 set_sanitized(){
483     var=$1
484     shift
485     eval $(sanitize_var_name "$var")='$*'
486 }
487
488 get_sanitized(){
489     eval echo \$$(sanitize_var_name "$1")
490 }
491
492 pushvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:=0}
495         eval ${pvar}_${level}="\$$pvar"
496         eval ${pvar}_level=$(($level+1))
497     done
498 }
499
500 popvar(){
501     for pvar in $*; do
502         eval level=\${${pvar}_level:-0}
503         test $level = 0 && continue
504         eval level=$(($level-1))
505         eval $pvar="\${${pvar}_${level}}"
506         eval ${pvar}_level=$level
507         eval unset ${pvar}_${level}
508     done
509 }
510
511 enable(){
512     set_all yes $*
513 }
514
515 disable(){
516     set_all no $*
517 }
518
519 enable_weak(){
520     set_weak yes $*
521 }
522
523 disable_weak(){
524     set_weak no $*
525 }
526
527 enable_sanitized(){
528     for var; do
529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 disable_sanitized(){
534     for var; do
535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
536     done
537 }
538
539 do_enable_deep(){
540     for var; do
541         enabled $var && continue
542         eval sel="\$${var}_select"
543         eval sgs="\$${var}_suggest"
544         pushvar var sgs
545         enable_deep $sel
546         popvar sgs
547         enable_deep_weak $sgs
548         popvar var
549     done
550 }
551
552 enable_deep(){
553     do_enable_deep $*
554     enable $*
555 }
556
557 enable_deep_weak(){
558     for var; do
559         disabled $var && continue
560         pushvar var
561         do_enable_deep $var
562         popvar var
563         enable_weak $var
564     done
565 }
566
567 enabled(){
568     test "${1#!}" = "$1" && op== || op=!=
569     eval test "x\$${1#!}" $op "xyes"
570 }
571
572 disabled(){
573     test "${1#!}" = "$1" && op== || op=!=
574     eval test "x\$${1#!}" $op "xno"
575 }
576
577 enabled_all(){
578     for opt; do
579         enabled $opt || return 1
580     done
581 }
582
583 disabled_all(){
584     for opt; do
585         disabled $opt || return 1
586     done
587 }
588
589 enabled_any(){
590     for opt; do
591         enabled $opt && return 0
592     done
593 }
594
595 disabled_any(){
596     for opt; do
597         disabled $opt && return 0
598     done
599     return 1
600 }
601
602 set_default(){
603     for opt; do
604         eval : \${$opt:=\$${opt}_default}
605     done
606 }
607
608 is_in(){
609     value=$1
610     shift
611     for var in $*; do
612         [ $var = $value ] && return 0
613     done
614     return 1
615 }
616
617 check_deps(){
618     for cfg; do
619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
620         disabled ${cfg}_checking && continue
621         enable ${cfg}_checking
622
623         eval dep_all="\$${cfg}_deps"
624         eval dep_any="\$${cfg}_deps_any"
625         eval dep_con="\$${cfg}_conflict"
626         eval dep_sel="\$${cfg}_select"
627         eval dep_sgs="\$${cfg}_suggest"
628         eval dep_ifa="\$${cfg}_if"
629         eval dep_ifn="\$${cfg}_if_any"
630
631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
634
635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
637         enabled_all  $dep_all || disable $cfg
638         enabled_any  $dep_any || disable $cfg
639         disabled_all $dep_con || disable $cfg
640         disabled_any $dep_sel && disable $cfg
641
642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
643
644         for dep in $dep_all $dep_any $dep_sel $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
650         disable ${cfg}_checking
651     done
652 }
653
654 print_config(){
655     pfx=$1
656     files=$2
657     shift 2
658     map 'eval echo "$v \${$v:-no}"' "$@" |
659     awk "BEGIN { split(\"$files\", files) }
660         {
661             c = \"$pfx\" toupper(\$1);
662             v = \$2;
663             sub(/yes/, 1, v);
664             sub(/no/,  0, v);
665             for (f in files) {
666                 file = files[f];
667                 if (file ~ /\\.h\$/) {
668                     printf(\"#define %s %d\\n\", c, v) >>file;
669                 } else if (file ~ /\\.asm\$/) {
670                     printf(\"%%define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.mak\$/) {
672                     n = -v ? \"\" : \"!\";
673                     printf(\"%s%s=yes\\n\", n, c) >>file;
674                 }
675             }
676         }"
677 }
678
679 print_enabled(){
680     suf=$1
681     shift
682     for v; do
683         enabled $v && printf "%s\n" ${v%$suf}
684     done
685 }
686
687 append(){
688     var=$1
689     shift
690     eval "$var=\"\$$var $*\""
691 }
692
693 prepend(){
694     var=$1
695     shift
696     eval "$var=\"$* \$$var\""
697 }
698
699 unique(){
700     var=$1
701     uniq_list=""
702     for tok in $(eval echo \$$var); do
703         uniq_list="$(filter_out $tok $uniq_list) $tok"
704     done
705     eval "$var=\"${uniq_list}\""
706 }
707
708 resolve(){
709     var=$1
710     tmpvar=
711     for entry in $(eval echo \$$var); do
712         tmpvar="$tmpvar $(eval echo \$${entry})"
713     done
714     eval "$var=\"${tmpvar}\""
715 }
716
717 add_cppflags(){
718     append CPPFLAGS "$@"
719 }
720
721 add_cflags(){
722     append CFLAGS $($cflags_filter "$@")
723 }
724
725 add_cflags_headers(){
726     append CFLAGS_HEADERS $($cflags_filter "$@")
727 }
728
729 add_asflags(){
730     append ASFLAGS $($asflags_filter "$@")
731 }
732
733 add_objcflags(){
734     append OBJCFLAGS $($objcflags_filter "$@")
735 }
736
737 add_ldflags(){
738     append LDFLAGS $($ldflags_filter "$@")
739 }
740
741 add_ldexeflags(){
742     append LDEXEFLAGS $($ldflags_filter "$@")
743 }
744
745 add_ldsoflags(){
746     append LDSOFLAGS $($ldflags_filter "$@")
747 }
748
749 add_stripflags(){
750     append STRIPFLAGS "$@"
751 }
752
753 add_extralibs(){
754     prepend extralibs $($ldflags_filter "$@")
755 }
756
757 add_host_cppflags(){
758     append host_cppflags "$@"
759 }
760
761 add_host_cflags(){
762     append host_cflags $($host_cflags_filter "$@")
763 }
764
765 add_host_ldflags(){
766     append host_ldflags $($host_ldflags_filter "$@")
767 }
768
769 add_compat(){
770     append compat_objs $1
771     shift
772     map 'add_cppflags -D$v' "$@"
773 }
774
775 check_cmd(){
776     log "$@"
777     "$@" >> $logfile 2>&1
778 }
779
780 cc_o(){
781     eval printf '%s\\n' $CC_O
782 }
783
784 cc_e(){
785     eval printf '%s\\n' $CC_E
786 }
787
788 check_cc(){
789     log check_cc "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
793 }
794
795 check_objcc(){
796     log check_objcc "$@"
797     cat > $TMPC
798     log_file $TMPC
799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
800 }
801
802 check_cpp(){
803     log check_cpp "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
807 }
808
809 as_o(){
810     eval printf '%s\\n' $AS_O
811 }
812
813 check_as(){
814     log check_as "$@"
815     cat > $TMPS
816     log_file $TMPS
817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
818 }
819
820 check_inline_asm(){
821     log check_inline_asm "$@"
822     name="$1"
823     code="$2"
824     shift 2
825     disable $name
826     check_cc "$@" <<EOF && enable $name
827 void foo(void){ __asm__ volatile($code); }
828 EOF
829 }
830
831 check_insn(){
832     log check_insn "$@"
833     check_inline_asm ${1}_inline "\"$2\""
834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
835 }
836
837 check_x86asm(){
838     log check_x86asm "$@"
839     echo "$1" > $TMPS
840     log_file $TMPS
841     shift 1
842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
843 }
844
845 ld_o(){
846     eval printf '%s\\n' $LD_O
847 }
848
849 check_ld(){
850     log check_ld "$@"
851     flags=$(filter_out '-l*' "$@")
852     libs=$(filter '-l*' "$@")
853     check_cc $($cflags_filter $flags) || return
854     flags=$($ldflags_filter $flags)
855     libs=$($ldflags_filter $libs)
856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
857 }
858
859 print_include(){
860     hdr=$1
861     test "${hdr%.h}" = "${hdr}" &&
862         echo "#include $hdr"    ||
863         echo "#include <$hdr>"
864 }
865
866 check_code(){
867     log check_code "$@"
868     check=$1
869     headers=$2
870     code=$3
871     shift 3
872     {
873         for hdr in $headers; do
874             print_include $hdr
875         done
876         echo "int main(void) { $code; return 0; }"
877     } | check_$check "$@"
878 }
879
880 check_cppflags(){
881     log check_cppflags "$@"
882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
883 #include <stdlib.h>;
884 EOF
885 }
886
887 test_cflags(){
888     log test_cflags "$@"
889     set -- $($cflags_filter "$@")
890     check_cc "$@" <<EOF
891 int x;
892 EOF
893 }
894
895 check_cflags(){
896     log check_cflags "$@"
897     test_cflags "$@" && add_cflags "$@"
898 }
899
900 test_objcflags(){
901     log test_objcflags "$@"
902     set -- $($objcflags_filter "$@")
903     check_objcc "$@" <<EOF
904 int x;
905 EOF
906 }
907
908 check_objcflags(){
909     log check_objcflags "$@"
910     test_objcflags "$@" && add_objcflags "$@"
911 }
912
913 test_ldflags(){
914     log test_ldflags "$@"
915     check_ld "$@" <<EOF
916 int main(void){ return 0; }
917 EOF
918 }
919
920 check_ldflags(){
921     log check_ldflags "$@"
922     test_ldflags "$@" && add_ldflags "$@"
923 }
924
925 test_stripflags(){
926     log test_stripflags "$@"
927     # call check_cc to get a fresh TMPO
928     check_cc <<EOF
929 int main(void) { return 0; }
930 EOF
931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
932 }
933
934 check_stripflags(){
935     log check_stripflags "$@"
936     test_stripflags "$@" && add_stripflags "$@"
937 }
938
939 check_header(){
940     log check_header "$@"
941     header=$1
942     shift
943     disable_sanitized $header
944     check_cpp "$@" <<EOF && enable_sanitized $header
945 #include <$header>
946 int x;
947 EOF
948 }
949
950 check_func(){
951     log check_func "$@"
952     func=$1
953     shift
954     disable $func
955     check_ld "$@" <<EOF && enable $func
956 extern int $func();
957 int main(void){ $func(); }
958 EOF
959 }
960
961 check_mathfunc(){
962     log check_mathfunc "$@"
963     func=$1
964     narg=$2
965     shift 2
966     test $narg = 2 && args="f, g" || args="f"
967     disable $func
968     check_ld "$@" <<EOF && enable $func
969 #include <math.h>
970 float foo(float f, float g) { return $func($args); }
971 int main(void){ return 0; }
972 EOF
973 }
974
975 check_func_headers(){
976     log check_func_headers "$@"
977     headers=$1
978     funcs=$2
979     shift 2
980     {
981         for hdr in $headers; do
982             print_include $hdr
983         done
984         for func in $funcs; do
985             echo "long check_$func(void) { return (long) $func; }"
986         done
987         echo "int main(void) { return 0; }"
988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
989 }
990
991 check_cpp_condition(){
992     log check_cpp_condition "$@"
993     header=$1
994     condition=$2
995     shift 2
996     check_cpp "$@" <<EOF
997 #include <$header>
998 #if !($condition)
999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 check_pkg_config(){
1029     log check_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         add_cflags    "$pkg_cflags" &&
1043         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     header="$1"
1134     shift
1135     check_header "$header" "$@" || die "ERROR: $header not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 AVRESAMPLE_COMPONENTS=""
1239 AVUTIL_COMPONENTS=""
1240
1241 COMPONENT_LIST="
1242     $AVCODEC_COMPONENTS
1243     $AVDEVICE_COMPONENTS
1244     $AVFILTER_COMPONENTS
1245     $AVFORMAT_COMPONENTS
1246     $AVRESAMPLE_COMPONENTS
1247     $AVUTIL_COMPONENTS
1248 "
1249
1250 EXAMPLE_LIST="
1251     decode_audio_example
1252     decode_video_example
1253     encode_audio_example
1254     encode_video_example
1255     filter_audio_example
1256     metadata_example
1257     output_example
1258     qsvdec_example
1259     transcode_aac_example
1260 "
1261
1262 # catchall list of things that require external libs to link
1263 EXTRALIBS_LIST="
1264     cpu_init
1265     cws2fws
1266 "
1267
1268 HWACCEL_LIBRARY_NONFREE_LIST="
1269     cuda
1270     cuvid
1271     libnpp
1272 "
1273 HWACCEL_LIBRARY_LIST="
1274     $HWACCEL_LIBRARY_NONFREE_LIST
1275     d3d11va
1276     dxva2
1277     libmfx
1278     mmal
1279     nvenc
1280     omx
1281     vaapi
1282     vda
1283     vdpau
1284 "
1285
1286 EXTERNAL_LIBRARY_GPL_LIST="
1287     libcdio
1288     libx264
1289     libx265
1290     libxavs
1291     libxvid
1292 "
1293
1294 EXTERNAL_LIBRARY_NONFREE_LIST="
1295     libfaac
1296     libfdk_aac
1297     openssl
1298 "
1299
1300 EXTERNAL_LIBRARY_VERSION3_LIST="
1301     libopencore_amrnb
1302     libopencore_amrwb
1303     libvo_aacenc
1304     libvo_amrwbenc
1305 "
1306
1307 EXTERNAL_LIBRARY_LIST="
1308     $EXTERNAL_LIBRARY_GPL_LIST
1309     $EXTERNAL_LIBRARY_NONFREE_LIST
1310     $EXTERNAL_LIBRARY_VERSION3_LIST
1311     avisynth
1312     avxsynth
1313     frei0r
1314     gnutls
1315     libbs2b
1316     libdc1394
1317     libdcadec
1318     libfontconfig
1319     libfreetype
1320     libgsm
1321     libhdcd
1322     libilbc
1323     libjack
1324     libkvazaar
1325     libmp3lame
1326     libopencv
1327     libopenh264
1328     libopenjpeg
1329     libopus
1330     libpulse
1331     librtmp
1332     libschroedinger
1333     libsnappy
1334     libspeex
1335     libtheora
1336     libtwolame
1337     libvorbis
1338     libvpx
1339     libwavpack
1340     libwebp
1341     libxcb
1342     libxcb_shm
1343     libxcb_xfixes
1344 "
1345
1346 SYSTEM_LIBRARY_LIST="
1347     bzlib
1348     zlib
1349 "
1350
1351 FEATURE_LIST="
1352     gray
1353     hardcoded_tables
1354     omx_rpi
1355     runtime_cpudetect
1356     safe_bitstream_reader
1357     shared
1358     small
1359     sram
1360     static
1361     swscale_alpha
1362 "
1363
1364 LIBRARY_LIST="
1365     avcodec
1366     avdevice
1367     avfilter
1368     avformat
1369     avresample
1370     avutil
1371     swscale
1372 "
1373
1374 LICENSE_LIST="
1375     gpl
1376     nonfree
1377     version3
1378 "
1379
1380 PROGRAM_LIST="
1381     avconv
1382     avplay
1383     avprobe
1384 "
1385
1386 SUBSYSTEM_LIST="
1387     dct
1388     doc
1389     error_resilience
1390     faan
1391     fft
1392     lsp
1393     lzo
1394     mdct
1395     network
1396     rdft
1397 "
1398
1399 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1400 CONFIG_LIST="
1401     $EXAMPLE_LIST
1402     $EXTERNAL_LIBRARY_LIST
1403     $HWACCEL_LIBRARY_LIST
1404     $FEATURE_LIST
1405     $LICENSE_LIST
1406     $LIBRARY_LIST
1407     $PROGRAM_LIST
1408     $SUBSYSTEM_LIST
1409     $SYSTEM_LIBRARY_LIST
1410     neon_clobber_test
1411     pic
1412     pod2man
1413     texi2html
1414     thumb
1415     valgrind_backtrace
1416     xmm_clobber_test
1417     $COMPONENT_LIST
1418 "
1419
1420 THREADS_LIST="
1421     pthreads
1422     w32threads
1423 "
1424
1425 ATOMICS_LIST="
1426     atomics_gcc
1427     atomics_suncc
1428     atomics_win32
1429 "
1430
1431 ARCH_LIST="
1432     aarch64
1433     alpha
1434     arm
1435     avr32
1436     avr32_ap
1437     avr32_uc
1438     bfin
1439     ia64
1440     m68k
1441     mips
1442     mips64
1443     parisc
1444     ppc
1445     ppc64
1446     s390
1447     sh4
1448     sparc
1449     sparc64
1450     tilegx
1451     tilepro
1452     tomi
1453     x86
1454     x86_32
1455     x86_64
1456 "
1457
1458 ARCH_EXT_LIST_ARM="
1459     armv5te
1460     armv6
1461     armv6t2
1462     armv8
1463     neon
1464     vfp
1465     vfpv3
1466 "
1467
1468 ARCH_EXT_LIST_X86_SIMD="
1469     amd3dnow
1470     amd3dnowext
1471     avx
1472     avx2
1473     fma3
1474     fma4
1475     mmx
1476     mmxext
1477     sse
1478     sse2
1479     sse3
1480     sse4
1481     sse42
1482     ssse3
1483     xop
1484 "
1485
1486 ARCH_EXT_LIST_PPC="
1487     altivec
1488     dcbzl
1489     ldbrx
1490     power8
1491     ppc4xx
1492     vsx
1493 "
1494
1495 ARCH_EXT_LIST_X86="
1496     $ARCH_EXT_LIST_X86_SIMD
1497     cpunop
1498     i686
1499 "
1500
1501 ARCH_EXT_LIST_MIPS="
1502     loongson
1503     mips32r1
1504     mips64r1
1505     mips32r2
1506     mips64r2
1507     mips32r6
1508     mips64r6
1509 "
1510
1511 ARCH_EXT_LIST="
1512     $ARCH_EXT_LIST_ARM
1513     $ARCH_EXT_LIST_MIPS
1514     $ARCH_EXT_LIST_PPC
1515     $ARCH_EXT_LIST_X86
1516     vis
1517 "
1518
1519 ARCH_FEATURES="
1520     aligned_stack
1521     fast_64bit
1522     fast_clz
1523     fast_cmov
1524     local_aligned_8
1525     local_aligned_16
1526     local_aligned_32
1527     simd_align_16
1528     simd_align_32
1529 "
1530
1531 BUILTIN_LIST="
1532     atomic_cas_ptr
1533     machine_rw_barrier
1534     MemoryBarrier
1535     mm_empty
1536     rdtsc
1537     sem_timedwait
1538     sync_val_compare_and_swap
1539 "
1540 HAVE_LIST_CMDLINE="
1541     inline_asm
1542     symver
1543     x86asm
1544 "
1545
1546 HAVE_LIST_PUB="
1547     bigendian
1548     fast_unaligned
1549 "
1550
1551 HEADERS_LIST="
1552     AVFoundation_AVFoundation_h
1553     alsa_asoundlib_h
1554     arpa_inet_h
1555     cdio_paranoia_h
1556     cdio_paranoia_paranoia_h
1557     d3d11_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dlfcn_h
1566     dxgidebug_h
1567     dxva_h
1568     gsm_h
1569     io_h
1570     mach_mach_time_h
1571     machine_ioctl_bt848_h
1572     machine_ioctl_meteor_h
1573     malloc_h
1574     poll_h
1575     sndio_h
1576     soundcard_h
1577     stdatomic_h
1578     sys_mman_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CoTaskMemFree
1629     CryptGenRandom
1630     fcntl
1631     flt_lim
1632     fork
1633     getaddrinfo
1634     gethrtime
1635     getopt
1636     GetProcessAffinityMask
1637     GetProcessMemoryInfo
1638     GetProcessTimes
1639     getrusage
1640     GetSystemTimeAsFileTime
1641     gettimeofday
1642     gmtime_r
1643     inet_aton
1644     isatty
1645     LoadLibrary
1646     localtime_r
1647     mach_absolute_time
1648     MapViewOfFile
1649     memalign
1650     mkstemp
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     cbs
1743     cbs_h264
1744     cbs_h265
1745     dirac_parse
1746     dvprofile
1747     faandct
1748     faanidct
1749     fdctdsp
1750     flacdsp
1751     fmtconvert
1752     g722dsp
1753     gmp
1754     golomb
1755     gplv3
1756     h263dsp
1757     h264chroma
1758     h264dsp
1759     h264parse
1760     h264pred
1761     h264qpel
1762     hevc_ps
1763     hpeldsp
1764     huffman
1765     huffyuvdsp
1766     huffyuvencdsp
1767     idctdsp
1768     iirfilter
1769     imdct15
1770     intrax8
1771     iso_media
1772     ividsp
1773     jpegtables
1774     lgplv3
1775     libx262
1776     libxcb_shape
1777     lpc
1778     lzf
1779     me_cmp
1780     mpeg_er
1781     mpegaudio
1782     mpegaudiodsp
1783     mpegaudioheader
1784     mpegvideo
1785     mpegvideoenc
1786     mss34dsp
1787     pixblockdsp
1788     qpeldsp
1789     qsv
1790     qsvdec
1791     qsvenc
1792     rangecoder
1793     riffdec
1794     riffenc
1795     rtpdec
1796     rtpenc_chain
1797     rv34dsp
1798     sinewin
1799     snappy
1800     srtp
1801     startcode
1802     texturedsp
1803     texturedspenc
1804     tpeldsp
1805     vaapi_encode
1806     vc1dsp
1807     videodsp
1808     vp3dsp
1809     vp56dsp
1810     vp8dsp
1811     wma_freqs
1812     wmv2dsp
1813 "
1814
1815 CMDLINE_SELECT="
1816     $ARCH_EXT_LIST
1817     $CONFIG_LIST
1818     $HAVE_LIST_CMDLINE
1819     $THREADS_LIST
1820     asm
1821     cross_compile
1822     debug
1823     extra_warnings
1824     logging
1825     lto
1826     optimizations
1827     rpath
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     cc
1847     objcc
1848     cpu
1849     cross_prefix
1850     custom_allocator
1851     dep_cc
1852     env
1853     extra_version
1854     host_cc
1855     host_cflags
1856     host_extralibs
1857     host_ld
1858     host_ldflags
1859     host_os
1860     ignore_tests
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     random_seed
1869     samples
1870     sysinclude
1871     sysroot
1872     target_exec
1873     target_os
1874     target_path
1875     target_samples
1876     toolchain
1877     x86asmexe
1878 "
1879
1880 CMDLINE_APPEND="
1881     extra_cflags
1882     extra_objcflags
1883     host_cppflags
1884 "
1885
1886 # code dependency declarations
1887
1888 # architecture extensions
1889
1890 armv5te_deps="arm"
1891 armv6_deps="arm"
1892 armv6t2_deps="arm"
1893 armv8_deps="aarch64"
1894 neon_deps_any="aarch64 arm"
1895 intrinsics_neon_deps="neon"
1896 vfp_deps_any="aarch64 arm"
1897 vfpv3_deps="vfp"
1898
1899 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1900
1901 altivec_deps="ppc"
1902 dcbzl_deps="ppc"
1903 ldbrx_deps="ppc"
1904 ppc4xx_deps="ppc"
1905 vsx_deps="altivec"
1906 power8_deps="vsx"
1907
1908 loongson_deps="mips"
1909 mips32r1_deps="mips32"
1910 mips32r2_deps="mips32"
1911 mips32r6_deps="mips32"
1912 mips64r1_deps="mips64"
1913 mips64r2_deps="mips64"
1914 mips64r6_deps="mips64"
1915
1916 vis_deps="sparc"
1917
1918 cpunop_deps="i686"
1919 x86_64_select="i686"
1920 x86_64_suggest="fast_cmov"
1921
1922 amd3dnow_deps="mmx"
1923 amd3dnowext_deps="amd3dnow"
1924 i686_deps="x86"
1925 mmx_deps="x86"
1926 mmxext_deps="mmx"
1927 sse_deps="mmxext"
1928 sse2_deps="sse"
1929 sse3_deps="sse2"
1930 ssse3_deps="sse3"
1931 sse4_deps="ssse3"
1932 sse42_deps="sse4"
1933 avx_deps="sse42"
1934 xop_deps="avx"
1935 fma3_deps="avx"
1936 fma4_deps="avx"
1937 avx2_deps="avx"
1938
1939 mmx_external_deps="x86asm"
1940 mmx_inline_deps="inline_asm x86"
1941 mmx_suggest="mmx_external mmx_inline"
1942
1943 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1944     eval dep=\$${ext}_deps
1945     eval ${ext}_external_deps='"${dep}_external"'
1946     eval ${ext}_inline_deps='"${dep}_inline"'
1947     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1948 done
1949
1950 aligned_stack_if_any="aarch64 ppc x86"
1951 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1952 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1953 fast_unaligned_if_any="aarch64 ppc x86"
1954 simd_align_16_if_any="altivec neon sse"
1955 simd_align_32_if_any="avx"
1956
1957 # system capabilities
1958 symver_if_any="symver_asm_label symver_gnu_asm"
1959 valgrind_backtrace_conflict="optimizations"
1960 valgrind_backtrace_deps="valgrind_valgrind_h"
1961
1962 # threading support
1963 atomics_gcc_if="sync_val_compare_and_swap"
1964 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1965 atomics_win32_if="MemoryBarrier"
1966 atomics_native_if_any="$ATOMICS_LIST"
1967 w32threads_deps="atomics_native"
1968 threads_if_any="$THREADS_LIST"
1969
1970 # subsystems
1971 cbs_h264_select="cbs golomb"
1972 cbs_h265_select="cbs golomb"
1973 dct_select="rdft"
1974 dirac_parse_select="golomb"
1975 error_resilience_select="me_cmp"
1976 faandct_deps="faan"
1977 faandct_select="fdctdsp"
1978 faanidct_deps="faan"
1979 faanidct_select="idctdsp"
1980 h264dsp_select="startcode"
1981 hevc_ps_select="golomb"
1982 intrax8_select="blockdsp idctdsp"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1986 mpeg_er_select="error_resilience"
1987 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1988 mpegaudiodsp_select="dct"
1989 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1990 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1991 vc1dsp_select="h264chroma qpeldsp startcode"
1992
1993 # decoders / encoders
1994 aac_decoder_select="adts_header imdct15 mdct sinewin"
1995 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1996 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1997 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1998 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1999 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2000 adpcm_g722_decoder_select="g722dsp"
2001 adpcm_g722_encoder_select="g722dsp"
2002 aic_decoder_select="golomb idctdsp"
2003 alac_encoder_select="lpc"
2004 als_decoder_select="bswapdsp"
2005 amrnb_decoder_select="lsp"
2006 amrwb_decoder_select="lsp"
2007 amv_decoder_select="sp5x_decoder"
2008 ape_decoder_select="bswapdsp"
2009 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2010 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2011 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2012 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2013 atrac1_decoder_select="mdct sinewin"
2014 atrac3_decoder_select="mdct"
2015 atrac3p_decoder_select="mdct sinewin"
2016 bink_decoder_select="blockdsp hpeldsp"
2017 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2018 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2019 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2020 clearvideo_decoder_select="idctdsp"
2021 cllc_decoder_select="bswapdsp"
2022 comfortnoise_encoder_select="lpc"
2023 cook_decoder_select="audiodsp mdct sinewin"
2024 cscd_decoder_select="lzo"
2025 cscd_decoder_suggest="zlib"
2026 dca_decoder_select="fmtconvert mdct"
2027 dds_decoder_select="texturedsp"
2028 dnxhd_decoder_select="blockdsp idctdsp"
2029 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2030 dvvideo_decoder_select="dvprofile idctdsp"
2031 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2032 dxa_decoder_deps="zlib"
2033 dxv_decoder_select="lzf texturedsp"
2034 eac3_decoder_select="ac3_decoder"
2035 eac3_encoder_select="ac3_encoder"
2036 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2037 eatgq_decoder_select="aandcttables idctdsp"
2038 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2039 exr_decoder_deps="zlib"
2040 ffv1_decoder_select="rangecoder"
2041 ffv1_encoder_select="rangecoder"
2042 ffvhuff_decoder_select="huffyuv_decoder"
2043 ffvhuff_encoder_select="huffyuv_encoder"
2044 fic_decoder_select="golomb"
2045 flac_decoder_select="flacdsp"
2046 flac_encoder_select="bswapdsp flacdsp lpc"
2047 flashsv_decoder_deps="zlib"
2048 flashsv_encoder_deps="zlib"
2049 flashsv2_decoder_deps="zlib"
2050 flv_decoder_select="h263_decoder"
2051 flv_encoder_select="h263_encoder"
2052 fourxm_decoder_select="blockdsp bswapdsp"
2053 fraps_decoder_select="bswapdsp huffman"
2054 g2m_decoder_deps="zlib"
2055 g2m_decoder_select="blockdsp idctdsp jpegtables"
2056 h261_decoder_select="mpeg_er mpegvideo"
2057 h261_encoder_select="aandcttables mpegvideoenc"
2058 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2059 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2060 h263i_decoder_select="h263_decoder"
2061 h263p_encoder_select="h263_encoder"
2062 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2063 h264_decoder_suggest="error_resilience"
2064 hap_decoder_select="snappy texturedsp"
2065 hap_encoder_deps="libsnappy"
2066 hap_encoder_select="texturedspenc"
2067 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2068 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2069 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2070 iac_decoder_select="imc_decoder"
2071 imc_decoder_select="bswapdsp fft mdct sinewin"
2072 indeo3_decoder_select="hpeldsp"
2073 indeo4_decoder_select="ividsp"
2074 indeo5_decoder_select="ividsp"
2075 interplay_video_decoder_select="hpeldsp"
2076 jpegls_decoder_select="mjpeg_decoder"
2077 jv_decoder_select="blockdsp"
2078 lagarith_decoder_select="huffyuvdsp"
2079 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2080 magicyuv_decoder_select="huffyuvdsp"
2081 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2082 metasound_decoder_select="lsp mdct sinewin"
2083 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2084 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2085 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2086 mjpegb_decoder_select="mjpeg_decoder"
2087 mlp_decoder_select="mlp_parser"
2088 motionpixels_decoder_select="bswapdsp"
2089 mp1_decoder_select="mpegaudio"
2090 mp1float_decoder_select="mpegaudio"
2091 mp2_decoder_select="mpegaudio"
2092 mp2float_decoder_select="mpegaudio"
2093 mp3_decoder_select="mpegaudio"
2094 mp3adu_decoder_select="mpegaudio"
2095 mp3adufloat_decoder_select="mpegaudio"
2096 mp3float_decoder_select="mpegaudio"
2097 mp3on4_decoder_select="mpegaudio"
2098 mp3on4float_decoder_select="mpegaudio"
2099 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2100 mpc8_decoder_select="mpegaudiodsp"
2101 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2102 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2103 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2104 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2105 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2106 mpeg4_encoder_select="h263_encoder"
2107 msa1_decoder_select="mss34dsp"
2108 msmpeg4v1_decoder_select="h263_decoder"
2109 msmpeg4v2_decoder_select="h263_decoder"
2110 msmpeg4v2_encoder_select="h263_encoder"
2111 msmpeg4v3_decoder_select="h263_decoder"
2112 msmpeg4v3_encoder_select="h263_encoder"
2113 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2114 mts2_decoder_select="mss34dsp"
2115 mxpeg_decoder_select="mjpeg_decoder"
2116 nellymoser_decoder_select="mdct sinewin"
2117 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2118 nuv_decoder_select="idctdsp lzo"
2119 on2avc_decoder_select="mdct"
2120 opus_decoder_deps="avresample"
2121 opus_decoder_select="imdct15"
2122 png_decoder_deps="zlib"
2123 png_encoder_deps="zlib"
2124 png_encoder_select="huffyuvencdsp"
2125 prores_decoder_select="idctdsp"
2126 prores_encoder_select="fdctdsp"
2127 qcelp_decoder_select="lsp"
2128 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2129 ra_144_encoder_select="audio_frame_queue lpc"
2130 ralf_decoder_select="golomb"
2131 rscc_decoder_deps="zlib"
2132 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2133 rv10_encoder_select="h263_encoder"
2134 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2135 rv20_encoder_select="h263_encoder"
2136 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2137 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2138 screenpresso_decoder_deps="zlib"
2139 sipr_decoder_select="lsp"
2140 sp5x_decoder_select="mjpeg_decoder"
2141 svq1_decoder_select="hpeldsp"
2142 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2143 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2144 svq3_decoder_suggest="zlib"
2145 tak_decoder_select="audiodsp"
2146 tdsc_decoder_deps="zlib"
2147 tdsc_decoder_select="mjpeg_decoder"
2148 theora_decoder_select="vp3_decoder"
2149 thp_decoder_select="mjpeg_decoder"
2150 tiff_decoder_suggest="zlib"
2151 tiff_encoder_suggest="zlib"
2152 truehd_decoder_select="mlp_decoder"
2153 truemotion2_decoder_select="bswapdsp"
2154 truespeech_decoder_select="bswapdsp"
2155 tscc_decoder_deps="zlib"
2156 txd_decoder_select="texturedsp"
2157 twinvq_decoder_select="mdct lsp sinewin"
2158 utvideo_decoder_select="bswapdsp huffyuvdsp"
2159 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2160 vble_decoder_select="huffyuvdsp"
2161 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2162 vc1image_decoder_select="vc1_decoder"
2163 vorbis_decoder_select="mdct"
2164 vorbis_encoder_select="mdct"
2165 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2166 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2167 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2168 vp6a_decoder_select="vp6_decoder"
2169 vp6f_decoder_select="vp6_decoder"
2170 vp7_decoder_select="h264pred videodsp vp8dsp"
2171 vp8_decoder_select="h264pred videodsp vp8dsp"
2172 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2173 webp_decoder_select="vp8_decoder"
2174 wmapro_decoder_select="mdct sinewin wma_freqs"
2175 wmav1_decoder_select="mdct sinewin wma_freqs"
2176 wmav1_encoder_select="mdct sinewin wma_freqs"
2177 wmav2_decoder_select="mdct sinewin wma_freqs"
2178 wmav2_encoder_select="mdct sinewin wma_freqs"
2179 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2180 wmv1_decoder_select="h263_decoder"
2181 wmv1_encoder_select="h263_encoder"
2182 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2183 wmv2_encoder_select="h263_encoder wmv2dsp"
2184 wmv3_decoder_select="vc1_decoder"
2185 wmv3image_decoder_select="wmv3_decoder"
2186 zerocodec_decoder_deps="zlib"
2187 zlib_decoder_deps="zlib"
2188 zlib_encoder_deps="zlib"
2189 zmbv_decoder_deps="zlib"
2190 zmbv_encoder_deps="zlib"
2191
2192 # hardware accelerators
2193 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2194 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2195 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2196 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2197
2198 h263_vaapi_hwaccel_deps="vaapi"
2199 h263_vaapi_hwaccel_select="h263_decoder"
2200 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2201 h264_cuvid_hwaccel_select="h264_decoder"
2202 h264_d3d11va_hwaccel_deps="d3d11va"
2203 h264_d3d11va_hwaccel_select="h264_decoder"
2204 h264_d3d11va2_hwaccel_deps="d3d11va"
2205 h264_d3d11va2_hwaccel_select="h264_decoder"
2206 h264_dxva2_hwaccel_deps="dxva2"
2207 h264_dxva2_hwaccel_select="h264_decoder"
2208 h264_mmal_hwaccel_deps="mmal"
2209 h264_qsv_hwaccel_deps="libmfx"
2210 h264_vaapi_hwaccel_deps="vaapi"
2211 h264_vaapi_hwaccel_select="h264_decoder"
2212 h264_vda_hwaccel_deps="vda"
2213 h264_vda_hwaccel_select="h264_decoder"
2214 h264_vda_old_hwaccel_deps="vda"
2215 h264_vda_old_hwaccel_select="h264_decoder"
2216 h264_vdpau_hwaccel_deps="vdpau"
2217 h264_vdpau_hwaccel_select="h264_decoder"
2218 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2219 hevc_cuvid_hwaccel_select="hevc_decoder"
2220 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2221 hevc_d3d11va_hwaccel_select="hevc_decoder"
2222 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2223 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2224 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2225 hevc_dxva2_hwaccel_select="hevc_decoder"
2226 hevc_qsv_hwaccel_deps="libmfx"
2227 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2228 hevc_vaapi_hwaccel_select="hevc_decoder"
2229 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2230 hevc_vdpau_hwaccel_select="hevc_decoder"
2231 mpeg1_vdpau_hwaccel_deps="vdpau"
2232 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2233 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2234 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2235 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2236 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_dxva2_hwaccel_deps="dxva2"
2238 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_mmal_hwaccel_deps="mmal"
2240 mpeg2_qsv_hwaccel_deps="libmfx"
2241 mpeg2_vaapi_hwaccel_deps="vaapi"
2242 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2243 mpeg2_vdpau_hwaccel_deps="vdpau"
2244 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2245 mpeg4_vaapi_hwaccel_deps="vaapi"
2246 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2247 mpeg4_vdpau_hwaccel_deps="vdpau"
2248 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2249 vc1_d3d11va_hwaccel_deps="d3d11va"
2250 vc1_d3d11va_hwaccel_select="vc1_decoder"
2251 vc1_d3d11va2_hwaccel_deps="d3d11va"
2252 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2253 vc1_dxva2_hwaccel_deps="dxva2"
2254 vc1_dxva2_hwaccel_select="vc1_decoder"
2255 vc1_mmal_hwaccel_deps="mmal"
2256 vc1_qsv_hwaccel_deps="libmfx"
2257 vc1_vaapi_hwaccel_deps="vaapi"
2258 vc1_vaapi_hwaccel_select="vc1_decoder"
2259 vc1_vdpau_hwaccel_deps="vdpau"
2260 vc1_vdpau_hwaccel_select="vc1_decoder"
2261 vp8_qsv_hwaccel_deps="libmfx"
2262 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2263 vp8_vaapi_hwaccel_select="vp8_decoder"
2264 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2265 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2266 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2267 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2268 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2269
2270 # hardware-accelerated codecs
2271 nvenc_deps_any="libdl LoadLibrary"
2272 omx_deps="libdl pthreads"
2273 omx_rpi_select="omx"
2274 qsv_deps="libmfx"
2275 qsvdec_select="qsv"
2276 qsvenc_select="qsv"
2277 vaapi_encode_deps="vaapi"
2278
2279 hwupload_cuda_filter_deps="cuda"
2280 scale_npp_filter_deps="cuda libnpp"
2281
2282 h264_mmal_decoder_deps="mmal"
2283 h264_nvenc_encoder_deps="nvenc"
2284 h264_omx_encoder_deps="omx"
2285 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2286 h264_qsv_encoder_select="qsvenc"
2287 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2288 h264_vaapi_encoder_select="vaapi_encode golomb"
2289 hevc_nvenc_encoder_deps="nvenc"
2290 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2291 hevc_qsv_encoder_select="hevc_ps qsvenc"
2292 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2293 hevc_vaapi_encoder_select="vaapi_encode golomb"
2294 mjpeg_qsv_encoder_deps="libmfx"
2295 mjpeg_qsv_encoder_select="qsvenc"
2296 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2297 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2298 mpeg2_mmal_decoder_deps="mmal"
2299 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2300 mpeg2_qsv_encoder_select="qsvenc"
2301 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2302 mpeg2_vaapi_encoder_select="vaapi_encode"
2303 mpeg4_omx_encoder_deps="omx"
2304 vc1_mmal_decoder_deps="mmal"
2305 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2306 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2307 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2308 vp8_vaapi_encoder_select="vaapi_encode"
2309 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2310 vp9_vaapi_encoder_select="vaapi_encode"
2311
2312 nvenc_h264_encoder_select="h264_nvenc_encoder"
2313 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2314
2315 # parsers
2316 aac_parser_select="adts_header"
2317 h264_parser_select="golomb h264dsp h264parse"
2318 hevc_parser_select="hevc_ps"
2319 mpegaudio_parser_select="mpegaudioheader"
2320 mpegvideo_parser_select="mpegvideo"
2321 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2322 vc1_parser_select="vc1dsp"
2323
2324 # bitstream_filters
2325 aac_adtstoasc_bsf_select="adts_header"
2326 h264_metadata_bsf_select="cbs_h264"
2327 h264_redundant_pps_bsf_select="cbs_h264"
2328 mjpeg2jpeg_bsf_select="jpegtables"
2329 trace_headers_bsf_select="cbs_h264 cbs_h265"
2330
2331 # external libraries
2332 avisynth_deps="LoadLibrary"
2333 avxsynth_deps="libdl"
2334 avisynth_demuxer_deps_any="avisynth avxsynth"
2335 avisynth_demuxer_select="riffdec"
2336 libdcadec_decoder_deps="libdcadec"
2337 libfaac_encoder_deps="libfaac"
2338 libfaac_encoder_select="audio_frame_queue"
2339 libfdk_aac_decoder_deps="libfdk_aac"
2340 libfdk_aac_encoder_deps="libfdk_aac"
2341 libfdk_aac_encoder_select="audio_frame_queue"
2342 libgsm_decoder_deps="libgsm"
2343 libgsm_encoder_deps="libgsm"
2344 libgsm_ms_decoder_deps="libgsm"
2345 libgsm_ms_encoder_deps="libgsm"
2346 libilbc_decoder_deps="libilbc"
2347 libilbc_encoder_deps="libilbc"
2348 libkvazaar_encoder_deps="libkvazaar"
2349 libmp3lame_encoder_deps="libmp3lame"
2350 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2351 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2352 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2353 libopencore_amrnb_encoder_select="audio_frame_queue"
2354 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2355 libopenh264_decoder_deps="libopenh264"
2356 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2357 libopenh264_encoder_deps="libopenh264"
2358 libopenjpeg_decoder_deps="libopenjpeg"
2359 libopenjpeg_encoder_deps="libopenjpeg"
2360 libopus_decoder_deps="libopus"
2361 libopus_encoder_deps="libopus"
2362 libopus_encoder_select="audio_frame_queue"
2363 libschroedinger_decoder_deps="libschroedinger"
2364 libschroedinger_encoder_deps="libschroedinger"
2365 libspeex_decoder_deps="libspeex"
2366 libspeex_encoder_deps="libspeex"
2367 libspeex_encoder_select="audio_frame_queue"
2368 libtheora_encoder_deps="libtheora"
2369 libtwolame_encoder_deps="libtwolame"
2370 libvo_aacenc_encoder_deps="libvo_aacenc"
2371 libvo_aacenc_encoder_select="audio_frame_queue"
2372 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2373 libvorbis_encoder_deps="libvorbis"
2374 libvorbis_encoder_select="audio_frame_queue"
2375 libvpx_vp8_decoder_deps="libvpx"
2376 libvpx_vp8_encoder_deps="libvpx"
2377 libvpx_vp9_decoder_deps="libvpx"
2378 libvpx_vp9_encoder_deps="libvpx"
2379 libwavpack_encoder_deps="libwavpack"
2380 libwavpack_encoder_select="audio_frame_queue"
2381 libwebp_encoder_deps="libwebp"
2382 libx262_encoder_deps="libx262"
2383 libx264_encoder_deps="libx264"
2384 libx265_encoder_deps="libx265"
2385 libxavs_encoder_deps="libxavs"
2386 libxvid_encoder_deps="libxvid mkstemp"
2387
2388 # demuxers / muxers
2389 ac3_demuxer_select="ac3_parser"
2390 asf_demuxer_select="riffdec"
2391 asf_muxer_select="riffenc"
2392 asf_stream_muxer_select="asf_muxer"
2393 avi_demuxer_select="iso_media riffdec"
2394 avi_muxer_select="riffenc"
2395 caf_demuxer_select="iso_media riffdec"
2396 dash_muxer_select="mp4_muxer"
2397 dirac_demuxer_select="dirac_parser"
2398 dv_demuxer_select="dvprofile"
2399 dv_muxer_select="dvprofile"
2400 dxa_demuxer_select="riffdec"
2401 eac3_demuxer_select="ac3_parser"
2402 f4v_muxer_select="mov_muxer"
2403 flac_demuxer_select="flac_parser"
2404 hds_muxer_select="flv_muxer"
2405 hls_muxer_select="mpegts_muxer"
2406 ipod_muxer_select="mov_muxer"
2407 ismv_muxer_select="mov_muxer"
2408 matroska_audio_muxer_select="matroska_muxer"
2409 matroska_demuxer_select="iso_media riffdec"
2410 matroska_demuxer_suggest="bzlib lzo zlib"
2411 matroska_muxer_select="iso_media riffenc"
2412 mmf_muxer_select="riffenc"
2413 mov_demuxer_select="iso_media riffdec"
2414 mov_demuxer_suggest="zlib"
2415 mov_muxer_select="iso_media riffenc rtpenc_chain"
2416 mp3_demuxer_select="mpegaudio_parser"
2417 mp3_muxer_select="mpegaudioheader"
2418 mp4_muxer_select="mov_muxer"
2419 mpegts_demuxer_select="iso_media"
2420 mpegts_muxer_select="adts_muxer latm_muxer"
2421 mpegtsraw_demuxer_select="mpegts_demuxer"
2422 mxf_d10_muxer_select="mxf_muxer"
2423 nut_muxer_select="riffenc"
2424 nuv_demuxer_select="riffdec"
2425 oga_muxer_select="ogg_muxer"
2426 ogg_demuxer_select="dirac_parse"
2427 opus_muxer_select="ogg_muxer"
2428 psp_muxer_select="mov_muxer"
2429 rtp_demuxer_select="sdp_demuxer"
2430 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2431 rtsp_demuxer_select="http_protocol rtpdec"
2432 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2433 sap_demuxer_select="sdp_demuxer"
2434 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2435 sdp_demuxer_select="rtpdec"
2436 smoothstreaming_muxer_select="ismv_muxer"
2437 spdif_demuxer_select="adts_header"
2438 spdif_muxer_select="adts_header"
2439 spx_muxer_select="ogg_muxer"
2440 swf_demuxer_suggest="zlib"
2441 tak_demuxer_select="tak_parser"
2442 tg2_muxer_select="mov_muxer"
2443 tgp_muxer_select="mov_muxer"
2444 w64_demuxer_select="wav_demuxer"
2445 wav_demuxer_select="riffdec"
2446 wav_muxer_select="riffenc"
2447 webm_muxer_select="iso_media riffenc"
2448 wtv_demuxer_select="mpegts_demuxer riffdec"
2449 xmv_demuxer_select="riffdec"
2450 xwma_demuxer_select="riffdec"
2451
2452 # indevs / outdevs
2453 alsa_indev_deps="alsa"
2454 alsa_outdev_deps="alsa"
2455 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2456 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2457 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2458 dv1394_indev_deps="dv1394"
2459 dv1394_indev_select="dv_demuxer"
2460 fbdev_indev_deps="linux_fb_h"
2461 jack_indev_deps="libjack"
2462 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2463 libcdio_indev_deps="libcdio"
2464 libdc1394_indev_deps="libdc1394"
2465 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2466 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2467 pulse_indev_deps="libpulse"
2468 sndio_indev_deps="sndio"
2469 sndio_outdev_deps="sndio"
2470 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2471 vfwcap_indev_deps="vfw32 vfwcap_defines"
2472 xcbgrab_indev_deps="libxcb libxcb_shape"
2473 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2474
2475 # protocols
2476 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2477 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2478 ffrtmpcrypt_protocol_select="tcp_protocol"
2479 ffrtmphttp_protocol_conflict="librtmp_protocol"
2480 ffrtmphttp_protocol_select="http_protocol"
2481 gopher_protocol_select="network"
2482 http_protocol_select="tcp_protocol"
2483 http_protocol_suggest="zlib"
2484 httpproxy_protocol_select="tcp_protocol"
2485 httpproxy_protocol_suggest="zlib"
2486 https_protocol_select="tls_protocol"
2487 https_protocol_suggest="zlib"
2488 icecast_protocol_select="http_protocol"
2489 librtmp_protocol_deps="librtmp"
2490 librtmpe_protocol_deps="librtmp"
2491 librtmps_protocol_deps="librtmp"
2492 librtmpt_protocol_deps="librtmp"
2493 librtmpte_protocol_deps="librtmp"
2494 mmsh_protocol_select="http_protocol"
2495 mmst_protocol_select="network"
2496 rtmp_protocol_conflict="librtmp_protocol"
2497 rtmp_protocol_select="tcp_protocol"
2498 rtmp_protocol_suggest="zlib"
2499 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2500 rtmpe_protocol_suggest="zlib"
2501 rtmps_protocol_conflict="librtmp_protocol"
2502 rtmps_protocol_select="tls_protocol"
2503 rtmps_protocol_suggest="zlib"
2504 rtmpt_protocol_select="ffrtmphttp_protocol"
2505 rtmpt_protocol_suggest="zlib"
2506 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2507 rtmpte_protocol_suggest="zlib"
2508 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2509 rtmpts_protocol_suggest="zlib"
2510 rtp_protocol_select="udp_protocol"
2511 sctp_protocol_deps="struct_sctp_event_subscribe"
2512 sctp_protocol_select="network"
2513 srtp_protocol_select="rtp_protocol srtp"
2514 tcp_protocol_select="network"
2515 tls_protocol_deps_any="gnutls openssl"
2516 tls_protocol_select="tcp_protocol"
2517 udp_protocol_select="network"
2518 unix_protocol_deps="sys_un_h"
2519 unix_protocol_select="network"
2520
2521 # filters
2522 asyncts_filter_deps="avresample"
2523 blackframe_filter_deps="gpl"
2524 boxblur_filter_deps="gpl"
2525 bs2b_filter_deps="libbs2b"
2526 cropdetect_filter_deps="gpl"
2527 deinterlace_qsv_filter_deps="libmfx"
2528 deinterlace_vaapi_filter_deps="vaapi"
2529 delogo_filter_deps="gpl"
2530 drawtext_filter_deps="libfreetype"
2531 drawtext_filter_suggest="libfontconfig"
2532 frei0r_filter_deps="frei0r libdl"
2533 frei0r_src_filter_deps="frei0r libdl"
2534 hdcd_filter_deps="libhdcd"
2535 hqdn3d_filter_deps="gpl"
2536 interlace_filter_deps="gpl"
2537 movie_filter_deps="avcodec avformat"
2538 ocv_filter_deps="libopencv"
2539 resample_filter_deps="avresample"
2540 scale_filter_deps="swscale"
2541 scale_qsv_filter_deps="libmfx"
2542 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2543
2544 # examples
2545 decode_audio_example_deps="avcodec avutil"
2546 decode_video_example_deps="avcodec avutil"
2547 encode_audio_example_deps="avcodec avutil"
2548 encode_video_example_deps="avcodec avutil"
2549 filter_audio_example_deps="avfilter avutil"
2550 metadata_example_deps="avformat avutil"
2551 output_example_deps="avcodec avformat avresample avutil swscale"
2552 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2553 transcode_aac_example_deps="avcodec avformat avresample"
2554
2555 # EXTRALIBS_LIST
2556 cpu_init_extralibs="pthreads_extralibs"
2557 cws2fws_extralibs="zlib_extralibs"
2558
2559 # libraries, in linking order
2560 avcodec_deps="avutil"
2561 avcodec_select="null_bsf"
2562 avdevice_deps="avformat avcodec avutil"
2563 avfilter_deps="avutil"
2564 avformat_deps="avcodec avutil"
2565 avformat_suggest="network"
2566 avresample_deps="avutil"
2567 swscale_deps="avutil"
2568
2569 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2570 avdevice_extralibs="libm_extralibs"
2571 avformat_extralibs="libm_extralibs"
2572 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2573 avresample_extralibs="libm_extralibs"
2574 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2575 swscale_extralibs="libm_extralibs"
2576
2577 # programs
2578 avconv_deps="avcodec avfilter avformat avresample swscale"
2579 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2580                fps_filter null_filter resample_filter scale_filter
2581                trim_filter"
2582 avconv_suggest="psapi shell32"
2583 avplay_deps="avcodec avfilter avformat avresample sdl"
2584 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2585 avplay_suggest="shell32"
2586 avprobe_deps="avcodec avformat"
2587 avprobe_suggest="shell32"
2588
2589 # documentation
2590 pod2man_deps="doc"
2591 texi2html_deps="doc"
2592
2593 # default parameters
2594
2595 logfile="avbuild/config.log"
2596
2597 # installation paths
2598 prefix_default="/usr/local"
2599 bindir_default='${prefix}/bin'
2600 datadir_default='${prefix}/share/avconv'
2601 docdir_default='${prefix}/share/doc/libav'
2602 incdir_default='${prefix}/include'
2603 libdir_default='${prefix}/lib'
2604 mandir_default='${prefix}/share/man'
2605 shlibdir_default="$libdir_default"
2606
2607 # toolchain
2608 ar_default="ar"
2609 cc_default="gcc"
2610 host_cc_default="gcc"
2611 x86asmexe_default="nasm"
2612 ln_s="ln -s -f"
2613 nm_default="nm -g"
2614 pkg_config_default=pkg-config
2615 ranlib="ranlib"
2616 strip="strip"
2617 version_script='--version-script'
2618
2619 # machine
2620 arch_default=$(uname -m)
2621 cpu="generic"
2622 intrinsics="none"
2623
2624 # OS
2625 target_os_default=$(tolower $(uname -s))
2626 host_os=$target_os_default
2627
2628 # configurable options
2629 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2630
2631 enable asm
2632 enable debug
2633 enable doc
2634 enable faan faandct faanidct
2635 enable optimizations
2636 enable safe_bitstream_reader
2637 enable static
2638 enable swscale_alpha
2639 enable valgrind_backtrace
2640
2641 # By default, enable only those hwaccels that have no external dependencies.
2642 enable d3d11va dxva2 vda vdpau
2643
2644 # internal components are enabled by default
2645 enable $EXTRALIBS_LIST
2646
2647 # Avoid external, non-system, libraries getting enabled by dependency resolution
2648 disable $EXTERNAL_LIBRARY_LIST
2649
2650 # build settings
2651 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2652 LIBPREF="lib"
2653 LIBSUF=".a"
2654 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2655 SLIBPREF="lib"
2656 SLIBSUF=".so"
2657 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2658 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2659 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2660 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2661 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2662 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2663 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2664
2665 asflags_filter=echo
2666 cflags_filter=echo
2667 ldflags_filter=echo
2668
2669 AS_C='-c'
2670 AS_O='-o $@'
2671 CC_C='-c'
2672 CC_E='-E -o $@'
2673 CC_O='-o $@'
2674 OBJCC_C='-c'
2675 OBJCC_E='-E -o $@'
2676 OBJCC_O='-o $@'
2677 X86ASM_O='-o $@'
2678 LD_O='-o $@'
2679 LD_LIB='-l%'
2680 LD_PATH='-L'
2681 HOSTCC_C='-c'
2682 HOSTCC_E='-E -o $@'
2683 HOSTCC_O='-o $@'
2684 HOSTLD_O='-o $@'
2685
2686 host_extralibs='-lm'
2687 host_cflags_filter=echo
2688 host_ldflags_filter=echo
2689
2690 target_path='$(CURDIR)'
2691
2692 # since the object filename is not given with the -MM flag, the compiler
2693 # is only able to print the basename, and we must add the path ourselves
2694 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2695 DEPFLAGS='-MM'
2696
2697 mkdir -p avbuild
2698
2699 # find source path
2700 if test -f configure; then
2701     source_path=.
2702 else
2703     source_path=$(cd $(dirname "$0"); pwd)
2704     echo "$source_path" | grep -q '[[:blank:]]' &&
2705         die "Out of tree builds are impossible with whitespace in source path."
2706     test -e "$source_path/config.h" &&
2707         die "Out of tree builds are impossible with config.h in source dir."
2708 fi
2709
2710 for v in "$@"; do
2711     r=${v#*=}
2712     l=${v%"$r"}
2713     r=$(sh_quote "$r")
2714     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2715 done
2716
2717 find_things(){
2718     thing=$1
2719     pattern=$2
2720     file=$source_path/$3
2721     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2722 }
2723
2724 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2725 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2726 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2727 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2728 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2729 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2730 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2731 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2732 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2733
2734 find_things_extern(){
2735     thing=$1
2736     pattern=$2
2737     file=$source_path/$3
2738     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2739 }
2740
2741 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2742 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2743
2744 AVCODEC_COMPONENTS_LIST="
2745     $BSF_LIST
2746     $DECODER_LIST
2747     $ENCODER_LIST
2748     $HWACCEL_LIST
2749     $PARSER_LIST
2750 "
2751
2752 AVDEVICE_COMPONENTS_LIST="
2753     $INDEV_LIST
2754     $OUTDEV_LIST
2755 "
2756
2757 AVFILTER_COMPONENTS_LIST="
2758     $FILTER_LIST
2759 "
2760
2761 AVFORMAT_COMPONENTS_LIST="
2762     $DEMUXER_LIST
2763     $MUXER_LIST
2764     $PROTOCOL_LIST
2765 "
2766
2767 ALL_COMPONENTS="
2768     $AVCODEC_COMPONENTS_LIST
2769     $AVDEVICE_COMPONENTS_LIST
2770     $AVFILTER_COMPONENTS_LIST
2771     $AVFORMAT_COMPONENTS_LIST
2772 "
2773
2774 for n in $COMPONENT_LIST; do
2775     v=$(toupper ${n%s})_LIST
2776     eval enable \$$v
2777     eval ${n}_if_any="\$$v"
2778 done
2779
2780 enable $ARCH_EXT_LIST
2781
2782 die_unknown(){
2783     echo "Unknown option \"$1\"."
2784     echo "See $0 --help for available options."
2785     exit 1
2786 }
2787
2788 print_3_columns() {
2789     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2790 }
2791
2792 show_list() {
2793     suffix=_$1
2794     shift
2795     echo $* | sed s/$suffix//g | print_3_columns
2796     exit 0
2797 }
2798
2799 rand_list(){
2800     IFS=', '
2801     set -- $*
2802     unset IFS
2803     for thing; do
2804         comp=${thing%:*}
2805         prob=${thing#$comp}
2806         prob=${prob#:}
2807         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2808         echo "prob ${prob:-0.5}"
2809         printf '%s\n' $comp
2810     done
2811 }
2812
2813 do_random(){
2814     action=$1
2815     shift
2816     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2817     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2818 }
2819
2820 for opt do
2821     optval="${opt#*=}"
2822     case "$opt" in
2823         --extra-ldflags=*)
2824             add_ldflags $optval
2825         ;;
2826         --extra-ldexeflags=*)
2827             add_ldexeflags $optval
2828         ;;
2829         --extra-ldsoflags=*)
2830             add_ldsoflags $optval
2831         ;;
2832         --extra-libs=*)
2833             add_extralibs $optval
2834         ;;
2835         --disable-devices)
2836             disable $INDEV_LIST $OUTDEV_LIST
2837         ;;
2838         --enable-debug=*)
2839             debuglevel="$optval"
2840         ;;
2841         --disable-programs)
2842             disable $PROGRAM_LIST
2843         ;;
2844         --disable-everything)
2845             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2846         ;;
2847         --disable-all)
2848             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2849             disable $LIBRARY_LIST $PROGRAM_LIST doc
2850         ;;
2851         --enable-random|--disable-random)
2852             action=${opt%%-random}
2853             do_random ${action#--} $COMPONENT_LIST
2854         ;;
2855         --enable-random=*|--disable-random=*)
2856             action=${opt%%-random=*}
2857             do_random ${action#--} $optval
2858         ;;
2859         --enable-*=*|--disable-*=*)
2860             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2861             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2862             eval list=\$$(toupper $thing)_LIST
2863             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2864             $action $(filter "$name" $list)
2865         ;;
2866         --enable-avserver|--disable-avserver*)
2867             warn "avserver has been removed, the ${opt} option is only"\
2868                  "provided for compatibility and will be removed in the future"
2869         ;;
2870         --enable-yasm|--disable-yasm)
2871             warn "The ${opt} option is only provided for compatibility and will be\n"\
2872                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2873             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2874         ;;
2875         --enable-?*|--disable-?*)
2876             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2877             if is_in $option $COMPONENT_LIST; then
2878                 test $action = disable && action=unset
2879                 eval $action \$$(toupper ${option%s})_LIST
2880             elif is_in $option $CMDLINE_SELECT; then
2881                 $action $option
2882             else
2883                 die_unknown $opt
2884             fi
2885         ;;
2886         --list-*)
2887             NAME="${opt#--list-}"
2888             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2889             NAME=${NAME%s}
2890             eval show_list $NAME \$$(toupper $NAME)_LIST
2891         ;;
2892         --help|-h) show_help
2893         ;;
2894         --quiet|-q) quiet=yes
2895         ;;
2896         *)
2897             optname="${opt%%=*}"
2898             optname="${optname#--}"
2899             optname=$(echo "$optname" | sed 's/-/_/g')
2900             if is_in $optname $CMDLINE_SET; then
2901                 eval $optname='$optval'
2902             elif is_in $optname $CMDLINE_APPEND; then
2903                 append $optname "$optval"
2904             else
2905                 die_unknown $opt
2906             fi
2907         ;;
2908     esac
2909 done
2910
2911 for e in $env; do
2912     eval "export $e"
2913 done
2914
2915 disabled logging && logfile=/dev/null
2916
2917 # Die early if licensing-related configure options are incompatible.
2918 die_license_disabled() {
2919     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2920 }
2921
2922 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2923 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2924 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2925
2926 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2927
2928 enabled_all gnutls openssl &&
2929     die "GnuTLS and OpenSSL must not be enabled at the same time."
2930
2931 # Disable all the library-specific components if the library itself
2932 # is disabled, see AVCODEC_LIST and following _LIST variables.
2933
2934 disable_components(){
2935     disabled ${1} && disable $(
2936         eval components="\$$(toupper ${1})_COMPONENTS"
2937         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2938     )
2939 }
2940
2941 map 'disable_components $v' $LIBRARY_LIST
2942
2943 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2944 set >> $logfile
2945
2946 case "$toolchain" in
2947     *-asan)
2948         cc_default="${toolchain%-asan}"
2949         add_cflags  -fsanitize=address
2950         add_ldflags -fsanitize=address
2951     ;;
2952     *-msan)
2953         cc_default="${toolchain%-msan}"
2954         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2955         add_ldflags -fsanitize=memory
2956     ;;
2957     *-tsan)
2958         cc_default="${toolchain%-tsan}"
2959         add_cflags  -fsanitize=thread -fPIE
2960         add_ldflags -fsanitize=thread -pie
2961         case "$toolchain" in
2962             gcc-tsan)
2963                 add_cflags  -fPIC
2964                 add_ldflags -fPIC
2965                 ;;
2966         esac
2967     ;;
2968     *-usan)
2969         cc_default="${toolchain%-usan}"
2970         add_cflags  -fsanitize=undefined
2971         add_ldflags -fsanitize=undefined
2972         case "$toolchain" in
2973             clang-usan)
2974                 add_cflags -O1
2975                 ;;
2976         esac
2977     ;;
2978     valgrind-*)
2979         target_exec_default="valgrind"
2980         case "$toolchain" in
2981             valgrind-massif)
2982                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2983                 ;;
2984             valgrind-memcheck)
2985                 target_exec_args="--track-origins=yes --leak-check=full"
2986                 ;;
2987         esac
2988     ;;
2989     msvc)
2990         # Check whether the current MSVC version needs the C99 converter.
2991         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2992         # support enough of C99 to build libav. Default to the new
2993         # behaviour if the regexp was unable to match anything, since this
2994         # successfully parses the version number of existing supported
2995         # versions that require the converter (MSVC 2010 and 2012).
2996         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2997         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2998             cc_default="cl"
2999         else
3000             cc_default="c99wrap cl"
3001         fi
3002         ld_default="$source_path/compat/windows/mslink"
3003         nm_default="dumpbin -symbols"
3004         ar_default="lib"
3005         case "$arch" in
3006         arm*)
3007             as_default="armasm"
3008             ;;
3009         esac
3010         target_os_default="win32"
3011         # Use a relative path for TMPDIR. This makes sure all the
3012         # ffconf temp files are written with a relative path, avoiding
3013         # issues with msys/win32 path conversion for MSVC parameters
3014         # such as -Fo<file> or -out:<file>.
3015         TMPDIR=.
3016     ;;
3017     icl)
3018         cc_default="icl"
3019         ld_default="xilink"
3020         nm_default="dumpbin -symbols"
3021         ar_default="xilib"
3022         target_os_default="win32"
3023         TMPDIR=.
3024     ;;
3025     gcov)
3026         add_cflags  -fprofile-arcs -ftest-coverage
3027         add_ldflags -fprofile-arcs -ftest-coverage
3028     ;;
3029     llvm-cov)
3030         add_cflags -fprofile-arcs -ftest-coverage
3031         add_ldflags --coverage
3032     ;;
3033     hardened)
3034         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3035         add_cflags   -fno-strict-overflow -fstack-protector-all
3036         add_ldflags  -Wl,-z,relro -Wl,-z,now
3037     ;;
3038     ?*)
3039         die "Unknown toolchain $toolchain"
3040     ;;
3041 esac
3042
3043 test -n "$cross_prefix" && enable cross_compile
3044
3045 if enabled cross_compile; then
3046     test -n "$arch" && test -n "$target_os" ||
3047         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3048 fi
3049
3050 ar_default="${cross_prefix}${ar_default}"
3051 cc_default="${cross_prefix}${cc_default}"
3052 objcc_default="${cross_prefix}${objcc_default}"
3053 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3054 nm_default="${cross_prefix}${nm_default}"
3055 pkg_config_default="${cross_prefix}${pkg_config_default}"
3056 ranlib="${cross_prefix}${ranlib}"
3057 strip="${cross_prefix}${strip}"
3058
3059 sysinclude_default="${sysroot}/usr/include"
3060
3061 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3062 enabled cross_compile || host_cc_default=$cc
3063 set_default host_cc
3064
3065 if ! $pkg_config --version >/dev/null 2>&1; then
3066     warn "$pkg_config not found, library detection may fail."
3067     pkg_config=false
3068 fi
3069
3070 exesuf() {
3071     case $1 in
3072         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3073     esac
3074 }
3075
3076 EXESUF=$(exesuf $target_os)
3077 HOSTEXESUF=$(exesuf $host_os)
3078
3079 # set temporary file name
3080 : ${TMPDIR:=$TEMPDIR}
3081 : ${TMPDIR:=$TMP}
3082 : ${TMPDIR:=/tmp}
3083
3084 if ! check_cmd mktemp -u XXXXXX; then
3085     # simple replacement for missing mktemp
3086     # NOT SAFE FOR GENERAL USE
3087     mktemp(){
3088         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3089         echo "$tmpname"
3090         mkdir "$tmpname"
3091     }
3092 fi
3093
3094 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3095     die "Unable to create temporary directory in $TMPDIR."
3096
3097 tmpfile(){
3098     tmp="${AVTMPDIR}/test"$2
3099     (set -C; exec > $tmp) 2> /dev/null ||
3100         die "Unable to create temporary file in $AVTMPDIR."
3101     eval $1=$tmp
3102 }
3103
3104 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3105 trap 'exit 2' INT
3106
3107 tmpfile TMPASM .asm
3108 tmpfile TMPC   .c
3109 tmpfile TMPE   $EXESUF
3110 tmpfile TMPH   .h
3111 tmpfile TMPO   .o
3112 tmpfile TMPS   .S
3113 tmpfile TMPSH  .sh
3114 tmpfile TMPV   .ver
3115
3116 unset -f mktemp
3117
3118 chmod +x $TMPE
3119
3120 # make sure we can execute files in $TMPDIR
3121 cat > $TMPSH 2>> $logfile <<EOF
3122 #! /bin/sh
3123 EOF
3124 chmod +x $TMPSH >> $logfile 2>&1
3125 if ! $TMPSH >> $logfile 2>&1; then
3126     cat <<EOF
3127 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3128 variable to another directory and make sure that it is not mounted noexec.
3129 EOF
3130     die "Sanity test failed."
3131 fi
3132
3133 armasm_flags(){
3134     for flag; do
3135         case $flag in
3136             # Filter out MSVC cl.exe options from cflags that shouldn't
3137             # be passed to gas-preprocessor
3138             -M[TD]*)                                            ;;
3139             *)                  echo $flag                      ;;
3140         esac
3141    done
3142 }
3143
3144 ccc_flags(){
3145     for flag; do
3146         case $flag in
3147             -std=c99)           echo -c99                       ;;
3148             -mcpu=*)            echo -arch ${flag#*=}           ;;
3149             -mieee)             echo -ieee                      ;;
3150             -O*|-fast)          echo $flag                      ;;
3151             -fno-math-errno)    echo -assume nomath_errno       ;;
3152             -g)                 echo -g3                        ;;
3153             -Wall)              echo -msg_enable level2         ;;
3154             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3155             -Wl,*)              echo $flag                      ;;
3156             -f*|-W*)                                            ;;
3157             *)                  echo $flag                      ;;
3158         esac
3159    done
3160 }
3161
3162 cparser_flags(){
3163     for flag; do
3164         case $flag in
3165             -Wno-switch)             echo -Wno-switch-enum ;;
3166             -Wno-format-zero-length) ;;
3167             -Wdisabled-optimization) ;;
3168             -Wno-pointer-sign)       echo -Wno-other ;;
3169             *)                       echo $flag ;;
3170         esac
3171     done
3172 }
3173
3174 msvc_common_flags(){
3175     for flag; do
3176         case $flag in
3177             # In addition to specifying certain flags under the compiler
3178             # specific filters, they must be specified here as well or else the
3179             # generic catch all at the bottom will print the original flag.
3180             -Wall)                ;;
3181             -Wextra)              ;;
3182             -std=c99)             ;;
3183             # Common flags
3184             -fomit-frame-pointer) ;;
3185             -g)                   echo -Z7 ;;
3186             -fno-math-errno)      ;;
3187             -fno-common)          ;;
3188             -fno-signed-zeros)    ;;
3189             -fPIC)                ;;
3190             -mthumb)              ;;
3191             -march=*)             ;;
3192             -lz)                  echo zlib.lib ;;
3193             -lx264)               echo libx264.lib ;;
3194             -l*)                  echo ${flag#-l}.lib ;;
3195             -L*)                  echo -libpath:${flag#-L} ;;
3196             *)                    echo $flag ;;
3197         esac
3198     done
3199 }
3200
3201 msvc_flags(){
3202     msvc_common_flags "$@"
3203     for flag; do
3204         case $flag in
3205             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3206                                        -wd4554 ;;
3207             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3208                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3209                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3210                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3211         esac
3212     done
3213 }
3214
3215 icl_flags(){
3216     msvc_common_flags "$@"
3217     for flag; do
3218         case $flag in
3219             # Despite what Intel's documentation says -Wall, which is supported
3220             # on Windows, does enable remarks so disable them here.
3221             -Wall)                echo $flag -Qdiag-disable:remark ;;
3222             -std=c99)             echo -Qstd=c99 ;;
3223         esac
3224     done
3225 }
3226
3227 pgi_flags(){
3228     for flag; do
3229         case $flag in
3230             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3231             -fomit-frame-pointer) echo -Mnoframe ;;
3232             -g)                   echo -gopt ;;
3233             *)                    echo $flag ;;
3234         esac
3235     done
3236 }
3237
3238 suncc_flags(){
3239     for flag; do
3240         case $flag in
3241             -march=*|-mcpu=*)
3242                 case "${flag#*=}" in
3243                     native)                   echo -xtarget=native       ;;
3244                     v9|niagara)               echo -xarch=sparc          ;;
3245                     ultrasparc)               echo -xarch=sparcvis       ;;
3246                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3247                     i586|pentium)             echo -xchip=pentium        ;;
3248                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3249                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3250                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3251                     pentium4*)          echo -xtarget=pentium4           ;;
3252                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3253                     *-sse3)             echo -xarch=sse3                 ;;
3254                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3255                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3256                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3257                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3258                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3259                     k8|opteron|athlon64|athlon-fx)
3260                                                echo -xarch=sse2a         ;;
3261                     athlon*)                   echo -xarch=pentium_proa  ;;
3262                 esac
3263                 ;;
3264             -std=c99)             echo -xc99              ;;
3265             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3266             -fPIC)                echo -KPIC -xcode=pic32 ;;
3267             -W*,*)                echo $flag              ;;
3268             -f*-*|-W*|-mimpure-text)                      ;;
3269             -shared)              echo -G                 ;;
3270             *)                    echo $flag              ;;
3271         esac
3272     done
3273 }
3274
3275 tms470_flags(){
3276     for flag; do
3277         case $flag in
3278             -march=*|-mcpu=*)
3279                 case "${flag#*=}" in
3280                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3281                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3282                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3283                     armv6*|arm11*)          echo -mv=6   ;;
3284                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3285                                             echo -mv=5e  ;;
3286                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3287                 esac
3288                 ;;
3289             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3290             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3291             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3292             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3293             -msoft-float)   echo --float_support=vfplib       ;;
3294             -O[0-3]|-mf=*)  echo $flag                        ;;
3295             -g)             echo -g -mn                       ;;
3296             -pds=*)         echo $flag                        ;;
3297             -D*|-I*)        echo $flag                        ;;
3298             --gcc|--abi=*)  echo $flag                        ;;
3299             -me)            echo $flag                        ;;
3300         esac
3301     done
3302 }
3303
3304 probe_cc(){
3305     pfx=$1
3306     _cc=$2
3307
3308     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3309     unset _ld_o _ldflags _ld_lib _ld_path
3310     unset _depflags _DEPCMD _DEPFLAGS
3311     _flags_filter=echo
3312
3313     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3314         _type=llvm_gcc
3315         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3316         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3317         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3318         _cflags_speed='-O3'
3319         _cflags_size='-Os'
3320     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3321         _type=gcc
3322         gcc_version=$($_cc --version | head -n1)
3323         gcc_basever=$($_cc -dumpversion)
3324         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3325         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3326         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3327         if ! $_cc -dumpversion | grep -q '^2\.'; then
3328             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3329         fi
3330         _cflags_speed='-O3'
3331         _cflags_size='-Os'
3332     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3333         _type=icc
3334         _ident=$($_cc --version | head -n1)
3335         _depflags='-MMD'
3336         _cflags_speed='-O3'
3337         _cflags_size='-Os'
3338         _cflags_noopt='-O1'
3339     elif $_cc -v 2>&1 | grep -q xlc; then
3340         _type=xlc
3341         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3342         _cflags_speed='-O5'
3343         _cflags_size='-O5 -qcompact'
3344     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3345         _type=ccc
3346         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3347         _DEPFLAGS='-M'
3348         _cflags_speed='-fast'
3349         _cflags_size='-O1'
3350         _flags_filter=ccc_flags
3351     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3352         test -d "$sysroot" || die "No valid sysroot specified."
3353         _type=armcc
3354         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3355         armcc_conf="$PWD/armcc.conf"
3356         $_cc --arm_linux_configure                 \
3357              --arm_linux_config_file="$armcc_conf" \
3358              --configure_sysroot="$sysroot"        \
3359              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3360              die "Error creating armcc configuration file."
3361         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3362         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3363         as_default="${cross_prefix}gcc"
3364         _depflags='-MMD'
3365         _cflags_speed='-O3'
3366         _cflags_size='-Os'
3367     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3368         _type=tms470
3369         _ident=$($_cc -version | head -n1 | tr -s ' ')
3370         _flags='--gcc --abi=eabi -me'
3371         _cc_e='-ppl -fe=$@'
3372         _cc_o='-fe=$@'
3373         _depflags='-ppa -ppd=$(@:.o=.d)'
3374         _cflags_speed='-O3 -mf=5'
3375         _cflags_size='-O3 -mf=2'
3376         _flags_filter=tms470_flags
3377     elif $_cc -v 2>&1 | grep -q clang; then
3378         _type=clang
3379         _ident=$($_cc --version 2>/dev/null | head -n1)
3380         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3381         _cflags_speed='-O3'
3382         _cflags_size='-Os'
3383     elif $_cc -V 2>&1 | grep -q Sun; then
3384         _type=suncc
3385         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3386         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3387         _DEPFLAGS='-xM1 -xc99'
3388         _ldflags='-std=c99'
3389         _cflags_speed='-O5'
3390         _cflags_size='-O5 -xspace'
3391         _flags_filter=suncc_flags
3392     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3393         _type=pathscale
3394         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3395         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3396         _cflags_speed='-O2'
3397         _cflags_size='-Os'
3398         _flags_filter='filter_out -Wdisabled-optimization'
3399     elif $_cc -v 2>&1 | grep -q Open64; then
3400         _type=open64
3401         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3402         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3403         _cflags_speed='-O2'
3404         _cflags_size='-Os'
3405         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3406     elif $_cc -V 2>&1 | grep -q Portland; then
3407         _type=pgi
3408         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3409         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3410         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3411         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3412         _cflags_noopt="-O1"
3413         _flags_filter=pgi_flags
3414     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3415         _type=armasm
3416         _ident=$($_cc | head -n1)
3417         # 4509: "This form of conditional instruction is deprecated"
3418         _flags="-nologo -ignore 4509"
3419         _flags_filter=armasm_flags
3420     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3421         _type=msvc
3422         _ident=$($_cc 2>&1 | head -n1)
3423         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3424         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3425         _cflags_speed="-O2"
3426         _cflags_size="-O1"
3427         _cflags_noopt="-O1"
3428         if $_cc -nologo- 2>&1 | grep -q Linker; then
3429             _ld_o='-out:$@'
3430         else
3431             _ld_o='-Fe$@'
3432         fi
3433         _cc_o='-Fo$@'
3434         _cc_e='-P -Fi$@'
3435         _flags_filter=msvc_flags
3436         _ld_lib='lib%.a'
3437         _ld_path='-libpath:'
3438         _flags='-nologo'
3439     elif $_cc 2>&1 | grep -q Intel; then
3440         _type=icl
3441         _ident=$($_cc 2>&1 | head -n1)
3442         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3443         # Not only is O3 broken on 13.x+ but it is slower on all previous
3444         # versions (tested) as well.
3445         _cflags_speed="-O2"
3446         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3447         if $_cc 2>&1 | grep -q Linker; then
3448             _ld_o='-out:$@'
3449         else
3450             _ld_o='-Fe$@'
3451         fi
3452         _cc_o='-Fo$@'
3453         _cc_e='-P'
3454         _flags_filter=icl_flags
3455         _ld_lib='lib%.a'
3456         _ld_path='-libpath:'
3457         # -Qdiag-error to make icl error when seeing certain unknown arguments
3458         _flags='-nologo -Qdiag-error:4044,10157'
3459         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3460         # with MSVC which enables it by default.
3461         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3462     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3463         # lld can emulate multiple different linkers; in ms link.exe mode,
3464         # the -? parameter gives the help output which contains an identifyable
3465         # string, while it gives an error in other modes.
3466         _type=lld-link
3467         # The link.exe mode doesn't have a switch for getting the version,
3468         # but we can force it back to gnu mode and get the version from there.
3469         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3470         _ld_o='-out:$@'
3471         _flags_filter=msvc_flags
3472         _ld_lib='lib%.a'
3473         _ld_path='-libpath:'
3474     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3475         _type=cparser
3476         _ident=$($_cc --version | head -n1)
3477         _depflags='-MMD'
3478         _cflags_speed='-O4'
3479         _cflags_size='-O2'
3480         _flags_filter=cparser_flags
3481     fi
3482
3483     eval ${pfx}_type=\$_type
3484     eval ${pfx}_ident=\$_ident
3485 }
3486
3487 set_ccvars(){
3488     eval ${1}_C=\${_cc_c-\${${1}_C}}
3489     eval ${1}_E=\${_cc_e-\${${1}_E}}
3490     eval ${1}_O=\${_cc_o-\${${1}_O}}
3491
3492     if [ -n "$_depflags" ]; then
3493         eval ${1}_DEPFLAGS=\$_depflags
3494     else
3495         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3496         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3497         eval DEP${1}FLAGS=\$_flags
3498     fi
3499 }
3500
3501 probe_cc cc "$cc"
3502 cflags_filter=$_flags_filter
3503 cflags_speed=$_cflags_speed
3504 cflags_size=$_cflags_size
3505 cflags_noopt=$_cflags_noopt
3506 add_cflags $_flags $_cflags
3507 cc_ldflags=$_ldflags
3508 set_ccvars CC
3509
3510 probe_cc hostcc "$host_cc"
3511 host_cflags_filter=$_flags_filter
3512 host_cflags_speed=$_cflags_speed
3513 add_host_cflags  $_flags $_cflags
3514 set_ccvars HOSTCC
3515
3516 test -n "$cc_type" && enable $cc_type ||
3517     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3518
3519 : ${as_default:=$cc}
3520 : ${objcc_default:=$cc}
3521 : ${dep_cc_default:=$cc}
3522 : ${ld_default:=$cc}
3523 : ${host_ld_default:=$host_cc}
3524 set_default ar as objcc dep_cc ld host_ld
3525
3526 probe_cc as "$as"
3527 asflags_filter=$_flags_filter
3528 add_asflags $_flags $_cflags
3529 set_ccvars AS
3530
3531 probe_cc objcc "$objcc"
3532 objcflags_filter=$_flags_filter
3533 add_objcflags $_flags $_cflags
3534 set_ccvars OBJC
3535
3536 probe_cc ld "$ld"
3537 ldflags_filter=$_flags_filter
3538 add_ldflags $_flags $_ldflags
3539 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3540 LD_O=${_ld_o-$LD_O}
3541 LD_LIB=${_ld_lib-$LD_LIB}
3542 LD_PATH=${_ld_path-$LD_PATH}
3543
3544 probe_cc hostld "$host_ld"
3545 host_ldflags_filter=$_flags_filter
3546 add_host_ldflags $_flags $_ldflags
3547 HOSTLD_O=${_ld_o-$HOSTLD_O}
3548
3549 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3550     probe_cc depcc "$dep_cc"
3551     CCDEP=${_DEPCMD:-$DEPCMD}
3552     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3553     DEPCCFLAGS=$_flags
3554 fi
3555
3556 if $ar 2>&1 | grep -q Microsoft; then
3557     arflags="-nologo"
3558     ar_o='-out:$@'
3559 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3560     arflags="rq"
3561     ar_o='$@'
3562 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3563     arflags='-Xany -r -c'
3564     ar_o='$@'
3565 else
3566     arflags="rc"
3567     ar_o='$@'
3568 fi
3569
3570 add_cflags $extra_cflags
3571 add_objcflags $extra_objcflags
3572 add_asflags $extra_cflags
3573
3574 if test -n "$sysroot"; then
3575     case "$cc_type" in
3576         gcc|llvm_gcc|clang)
3577             add_cppflags --sysroot="$sysroot"
3578             add_ldflags --sysroot="$sysroot"
3579         ;;
3580         tms470)
3581             add_cppflags -I"$sysinclude"
3582             add_ldflags  --sysroot="$sysroot"
3583         ;;
3584     esac
3585 fi
3586
3587 if test "$cpu" = host; then
3588     enabled cross_compile &&
3589         die "--cpu=host makes no sense when cross-compiling."
3590
3591     case "$cc_type" in
3592         gcc|llvm_gcc)
3593             check_native(){
3594                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3595                 sed -n "/cc1.*$1=/{
3596                             s/.*$1=\\([^ ]*\\).*/\\1/
3597                             p
3598                             q
3599                         }" $TMPE
3600             }
3601             cpu=$(check_native -march || check_native -mcpu)
3602         ;;
3603     esac
3604
3605     test "${cpu:-host}" = host &&
3606         die "--cpu=host not supported with compiler $cc"
3607 fi
3608
3609 # Deal with common $arch aliases
3610 case "$arch" in
3611     aarch64|arm64)
3612         arch="aarch64"
3613     ;;
3614     arm*)
3615         arch="arm"
3616     ;;
3617     mips*|IP*)
3618         case "$arch" in
3619         *el)
3620             add_cppflags -EL
3621             add_ldflags -EL
3622         ;;
3623         *eb)
3624             add_cppflags -EB
3625             add_ldflags -EB
3626         ;;
3627         esac
3628         arch="mips"
3629     ;;
3630     parisc*|hppa*)
3631         arch="parisc"
3632     ;;
3633     "Power Macintosh"|ppc*|powerpc*)
3634         arch="ppc"
3635     ;;
3636     s390|s390x)
3637         arch="s390"
3638     ;;
3639     sh4|sh)
3640         arch="sh4"
3641     ;;
3642     sun4u|sparc*)
3643         arch="sparc"
3644     ;;
3645     tilegx|tile-gx)
3646         arch="tilegx"
3647     ;;
3648     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3649         arch="x86"
3650     ;;
3651 esac
3652
3653 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3654 enable $arch
3655
3656 # Add processor-specific flags
3657 if enabled aarch64; then
3658
3659     case $cpu in
3660         armv*)
3661             cpuflags="-march=$cpu"
3662         ;;
3663         *)
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666     esac
3667
3668 elif enabled alpha; then
3669
3670     cpuflags="-mcpu=$cpu"
3671
3672 elif enabled arm; then
3673
3674     check_arm_arch() {
3675         check_cpp_condition stddef.h \
3676             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3677             $cpuflags
3678     }
3679
3680     probe_arm_arch() {
3681         if   check_arm_arch 4;        then echo armv4
3682         elif check_arm_arch 4T;       then echo armv4t
3683         elif check_arm_arch 5;        then echo armv5
3684         elif check_arm_arch 5E;       then echo armv5e
3685         elif check_arm_arch 5T;       then echo armv5t
3686         elif check_arm_arch 5TE;      then echo armv5te
3687         elif check_arm_arch 5TEJ;     then echo armv5te
3688         elif check_arm_arch 6;        then echo armv6
3689         elif check_arm_arch 6J;       then echo armv6j
3690         elif check_arm_arch 6K;       then echo armv6k
3691         elif check_arm_arch 6Z;       then echo armv6z
3692         elif check_arm_arch 6ZK;      then echo armv6zk
3693         elif check_arm_arch 6T2;      then echo armv6t2
3694         elif check_arm_arch 7;        then echo armv7
3695         elif check_arm_arch 7A  7_A;  then echo armv7-a
3696         elif check_arm_arch 7S;       then echo armv7-a
3697         elif check_arm_arch 7R  7_R;  then echo armv7-r
3698         elif check_arm_arch 7M  7_M;  then echo armv7-m
3699         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3700         elif check_arm_arch 8A  8_A;  then echo armv8-a
3701         fi
3702     }
3703
3704     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3705
3706     case $cpu in
3707         armv*)
3708             cpuflags="-march=$cpu"
3709             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3710         ;;
3711         *)
3712             cpuflags="-mcpu=$cpu"
3713             case $cpu in
3714                 cortex-a*)                               subarch=armv7a  ;;
3715                 cortex-r*)                               subarch=armv7r  ;;
3716                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3717                 arm11*)                                  subarch=armv6   ;;
3718                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3719                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3720                 *)                             subarch=$(probe_arm_arch) ;;
3721             esac
3722         ;;
3723     esac
3724
3725     case "$subarch" in
3726         armv5t*)    enable fast_clz                ;;
3727         armv[6-8]*) enable fast_clz fast_unaligned ;;
3728     esac
3729
3730 elif enabled avr32; then
3731
3732     case $cpu in
3733         ap7[02]0[0-2])
3734             subarch="avr32_ap"
3735             cpuflags="-mpart=$cpu"
3736         ;;
3737         ap)
3738             subarch="avr32_ap"
3739             cpuflags="-march=$cpu"
3740         ;;
3741         uc3[ab]*)
3742             subarch="avr32_uc"
3743             cpuflags="-mcpu=$cpu"
3744         ;;
3745         uc)
3746             subarch="avr32_uc"
3747             cpuflags="-march=$cpu"
3748         ;;
3749     esac
3750
3751 elif enabled bfin; then
3752
3753     cpuflags="-mcpu=$cpu"
3754
3755 elif enabled mips; then
3756
3757     cpuflags="-march=$cpu"
3758
3759 elif enabled ppc; then
3760
3761     disable ldbrx
3762
3763     case $(tolower $cpu) in
3764         601|ppc601|powerpc601)
3765             cpuflags="-mcpu=601"
3766             disable altivec
3767         ;;
3768         603*|ppc603*|powerpc603*)
3769             cpuflags="-mcpu=603"
3770             disable altivec
3771         ;;
3772         604*|ppc604*|powerpc604*)
3773             cpuflags="-mcpu=604"
3774             disable altivec
3775         ;;
3776         g3|75*|ppc75*|powerpc75*)
3777             cpuflags="-mcpu=750"
3778             disable altivec
3779         ;;
3780         g4|745*|ppc745*|powerpc745*)
3781             cpuflags="-mcpu=7450"
3782             disable vsx
3783         ;;
3784         74*|ppc74*|powerpc74*)
3785             cpuflags="-mcpu=7400"
3786             disable vsx
3787         ;;
3788         g5|970|ppc970|powerpc970)
3789             cpuflags="-mcpu=970"
3790             disable vsx
3791         ;;
3792         power[3-6]*)
3793             cpuflags="-mcpu=$cpu"
3794             disable vsx
3795         ;;
3796         power[7-8]*)
3797             cpuflags="-mcpu=$cpu"
3798             enable ldbrx
3799         ;;
3800         cell)
3801             cpuflags="-mcpu=cell"
3802             enable ldbrx
3803             disable vsx
3804         ;;
3805         e500mc)
3806             cpuflags="-mcpu=e500mc"
3807             disable altivec
3808         ;;
3809         e500v2)
3810             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3811             disable altivec
3812             disable dcbzl
3813         ;;
3814         e500)
3815             cpuflags="-mcpu=8540 -mhard-float"
3816             disable altivec
3817             disable dcbzl
3818         ;;
3819     esac
3820
3821 elif enabled sparc; then
3822
3823     case $cpu in
3824         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3825             cpuflags="-mcpu=$cpu"
3826         ;;
3827         ultrasparc*|niagara[234])
3828             cpuflags="-mcpu=$cpu"
3829         ;;
3830     esac
3831
3832 elif enabled x86; then
3833
3834     case $cpu in
3835         i[345]86|pentium)
3836             cpuflags="-march=$cpu"
3837             disable i686
3838             disable mmx
3839         ;;
3840         # targets that do NOT support nopl and conditional mov (cmov)
3841         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3842             cpuflags="-march=$cpu"
3843             disable i686
3844         ;;
3845         # targets that do support nopl and conditional mov (cmov)
3846         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3847             cpuflags="-march=$cpu"
3848             enable i686
3849             enable fast_cmov
3850         ;;
3851         # targets that do support conditional mov but on which it's slow
3852         pentium4|pentium4m|prescott|nocona)
3853             cpuflags="-march=$cpu"
3854             enable i686
3855             disable fast_cmov
3856         ;;
3857     esac
3858
3859 fi
3860
3861 if [ "$cpu" != generic ]; then
3862     add_cflags  $cpuflags
3863     add_asflags $cpuflags
3864     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3865 fi
3866
3867 # compiler sanity check
3868 check_exec <<EOF
3869 int main(void){ return 0; }
3870 EOF
3871 if test "$?" != 0; then
3872     echo "$cc is unable to create an executable file."
3873     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3874         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3875         echo "Only do this if you know what cross compiling means."
3876     fi
3877     die "C compiler test failed."
3878 fi
3879
3880 add_cppflags -D_ISOC99_SOURCE
3881
3882 # some compilers silently accept -std=c11, so we also need to check that the
3883 # version macro is defined properly
3884 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3885     add_cflags -std=c11 ||
3886     check_cflags -std=c99
3887
3888 check_cppflags -D_FILE_OFFSET_BITS=64
3889 check_cppflags -D_LARGEFILE_SOURCE
3890
3891 add_host_cppflags -D_ISOC99_SOURCE
3892 check_host_cflags -std=c99
3893 check_host_cflags -Wall
3894 check_host_cflags $host_cflags_speed
3895
3896 check_64bit(){
3897     arch32=$1
3898     arch64=$2
3899     expr=$3
3900     check_code cc "" "int test[2*($expr) - 1]" &&
3901         subarch=$arch64 || subarch=$arch32
3902 }
3903
3904 case "$arch" in
3905     aarch64|alpha|ia64)
3906         spic=$shared
3907     ;;
3908     mips)
3909         check_64bit mips mips64 '_MIPS_SIM > 1'
3910         spic=$shared
3911     ;;
3912     parisc)
3913         check_64bit parisc parisc64 'sizeof(void *) > 4'
3914         spic=$shared
3915     ;;
3916     ppc)
3917         check_64bit ppc ppc64 'sizeof(void *) > 4'
3918         spic=$shared
3919     ;;
3920     s390)
3921         check_64bit s390 s390x 'sizeof(void *) > 4'
3922         spic=$shared
3923     ;;
3924     sparc)
3925         check_64bit sparc sparc64 'sizeof(void *) > 4'
3926         spic=$shared
3927     ;;
3928     x86)
3929         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3930         if test "$subarch" = "x86_64"; then
3931             spic=$shared
3932         fi
3933     ;;
3934 esac
3935
3936 enable $subarch
3937 enabled spic && enable_weak pic
3938
3939 enabled x86_64 && objformat=elf64 || objformat="elf32"
3940
3941 # OS specific
3942 case $target_os in
3943     aix)
3944         SHFLAGS=-shared
3945         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3946         enabled shared && add_ldflags -Wl,-brtl
3947         ;;
3948     android)
3949         disable symver
3950         enable section_data_rel_ro
3951         SLIB_INSTALL_NAME='$(SLIBNAME)'
3952         SLIB_INSTALL_LINKS=
3953         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3954         ;;
3955     haiku)
3956         prefix_default="/boot/common"
3957         network_extralibs="-lnetwork"
3958         host_extralibs=
3959         ;;
3960     sunos)
3961         SHFLAGS='-shared -Wl,-h,$$(@F)'
3962         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3963         network_extralibs="-lsocket -lnsl"
3964         # When using suncc to build, the Solaris linker will mark
3965         # an executable with each instruction set encountered by
3966         # the Solaris assembler.  As our libraries contain their own
3967         # guards for processor-specific code, instead suppress
3968         # generation of the HWCAPS ELF section on Solaris x86 only.
3969         enabled_all suncc x86 &&
3970             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3971             add_ldflags -Wl,-M,mapfile
3972         nm_default='nm -P -g'
3973         version_script='-M'
3974         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3975         ;;
3976     netbsd)
3977         disable symver
3978         oss_indev_extralibs="-lossaudio"
3979         oss_outdev_extralibs="-lossaudio"
3980         ;;
3981     openbsd|bitrig)
3982         disable symver
3983         SHFLAGS='-shared'
3984         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3985         SLIB_INSTALL_LINKS=
3986         oss_indev_extralibs="-lossaudio"
3987         oss_outdev_extralibs="-lossaudio"
3988         ;;
3989     dragonfly)
3990         disable symver
3991         ;;
3992     freebsd)
3993         ;;
3994     bsd/os)
3995         add_extralibs -lpoll -lgnugetopt
3996         ;;
3997     darwin)
3998         enabled ppc && add_asflags -force_cpusubtype_ALL
3999         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4000         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4001         add_ldflags -Wl,-dynamic,-search_paths_first
4002         check_cflags -Werror=partial-availability
4003         SLIBSUF=".dylib"
4004         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
4005         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
4006         enabled x86_64 && objformat="macho64" || objformat="macho32"
4007         enabled_any pic shared ||
4008             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4009         check_header dispatch/dispatch.h &&
4010             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4011         if test -n "$sysroot"; then
4012             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4013             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4014         fi
4015         ;;
4016     msys*)
4017         die "Native MSYS builds are discouraged, please use the MINGW environment."
4018         ;;
4019     mingw32*|mingw64*)
4020         if test $target_os = "mingw32ce"; then
4021             disable network
4022         else
4023             target_os=mingw32
4024         fi
4025         LIBTARGET=i386
4026         if enabled x86_64; then
4027             LIBTARGET="i386:x86-64"
4028         elif enabled arm; then
4029             LIBTARGET=arm-wince
4030         fi
4031         check_ldflags -Wl,--nxcompat
4032         check_ldflags -Wl,--dynamicbase
4033         shlibdir_default="$bindir_default"
4034         SLIBPREF=""
4035         SLIBSUF=".dll"
4036         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4037         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4038         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4039         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4040         SLIB_INSTALL_LINKS=
4041         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4042         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4043         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4044         enabled x86_64 && objformat="win64" || objformat="win32"
4045         dlltool="${cross_prefix}dlltool"
4046         ranlib=:
4047         enable dos_paths
4048         ;;
4049     win32|win64)
4050         disable symver
4051         if enabled shared; then
4052             # Link to the import library instead of the normal static library
4053             # for shared libs.
4054             LD_LIB='%.lib'
4055             # Cannot build both shared and static libs with MSVC or icl.
4056             disable static
4057         fi
4058         shlibdir_default="$bindir_default"
4059         SLIBPREF=""
4060         SLIBSUF=".dll"
4061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4062         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4063         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4064         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4065         SLIB_INSTALL_LINKS=
4066         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4067         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4068         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4069         enabled x86_64 && objformat="win64" || objformat="win32"
4070         ranlib=:
4071         enable dos_paths
4072         ;;
4073     cygwin*)
4074         target_os=cygwin
4075         shlibdir_default="$bindir_default"
4076         SLIBPREF="cyg"
4077         SLIBSUF=".dll"
4078         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4079         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4081         SLIB_INSTALL_LINKS=
4082         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4083         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4084         enabled x86_64 && objformat="win64" || objformat="win32"
4085         enable dos_paths
4086         ;;
4087     *-dos|freedos|opendos)
4088         network_extralibs="-lsocket"
4089         objformat="coff"
4090         enable dos_paths
4091         add_cppflags -U__STRICT_ANSI__
4092         ;;
4093     linux)
4094         enable dv1394
4095         enable section_data_rel_ro
4096         ;;
4097     irix*)
4098         target_os=irix
4099         ranlib="echo ignoring ranlib"
4100         ;;
4101     os/2*)
4102         ln_s="cp -f"
4103         objformat="aout"
4104         add_cppflags -D_GNU_SOURCE
4105         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4106         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4107         LIBSUF="_s.a"
4108         SLIBPREF=""
4109         SLIBSUF=".dll"
4110         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4111         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4112         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4113             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4114             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4115             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4116             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4117         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4118             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4119         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4120         enable dos_paths
4121         ;;
4122     gnu/kfreebsd)
4123         add_cppflags -D_BSD_SOURCE
4124         ;;
4125     gnu)
4126         ;;
4127     qnx)
4128         add_cppflags -D_QNX_SOURCE
4129         network_extralibs="-lsocket"
4130         ;;
4131     symbian)
4132         SLIBSUF=".dll"
4133         enable dos_paths
4134         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4135         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4136         add_ldflags -Wl,--target1-abs,--no-undefined \
4137                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4138                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4139         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4140                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4141                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4142         ;;
4143     osf1)
4144         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4145         ;;
4146     minix)
4147         ;;
4148     none)
4149         ;;
4150     *)
4151         die "Unknown OS '$target_os'."
4152         ;;
4153 esac
4154
4155 # determine libc flavour
4156
4157 probe_libc(){
4158     pfx=$1
4159     pfx_no_=${pfx%_}
4160     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4161     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4162         eval ${pfx}libc_type=uclibc
4163         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4164     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4165         eval ${pfx}libc_type=glibc
4166         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4167     # MinGW headers can be installed on Cygwin, so check for newlib first.
4168     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4169         eval ${pfx}libc_type=newlib
4170         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4171     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4172     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4173         eval ${pfx}libc_type=mingw64
4174         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4175         eval test \$${pfx_no_}cc_type = "gcc" &&
4176             add_${pfx}cppflags -D__printf__=__gnu_printf__
4177     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4178          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4179         eval ${pfx}libc_type=mingw32
4180         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4181             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4182             die "ERROR: MinGW32 runtime version must be >= 3.15."
4183         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4184         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4185             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4186         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4187             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4188         eval test \$${pfx_no_}cc_type = "gcc" &&
4189             add_${pfx}cppflags -D__printf__=__gnu_printf__
4190     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4191         eval ${pfx}libc_type=msvcrt
4192         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4193             if [ "$pfx" = host_ ]; then
4194                 add_host_cppflags -Dsnprintf=_snprintf
4195             else
4196                 add_compat strtod.o strtod=avpriv_strtod
4197                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4198                                              _snprintf=avpriv_snprintf  \
4199                                              vsnprintf=avpriv_vsnprintf
4200             fi
4201         fi
4202         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4203         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4204         # 0x601 by default unless something else is set by the user.
4205         # This can easily lead to us detecting functions only present
4206         # in such new versions and producing binaries requiring windows 7.0.
4207         # Therefore explicitly set the default to XP unless the user has
4208         # set something else on the command line.
4209         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4210         # family. For these cases, configure is free to use any functions
4211         # found in the SDK headers by default. (Alternatively, we could force
4212         # _WIN32_WINNT to 0x0602 in that case.)
4213         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4214             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4215 #ifdef WINAPI_FAMILY
4216 #include <winapifamily.h>
4217 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4218 #error not desktop
4219 #endif
4220 #endif
4221 EOF
4222         if [ "$pfx" = "" ]; then
4223             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4224         fi
4225     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4226         eval ${pfx}libc_type=klibc
4227     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4228         eval ${pfx}libc_type=bionic
4229     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4230         eval ${pfx}libc_type=solaris
4231         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4232     else
4233         eval ${pfx}libc_type=default
4234         add_${pfx}cppflags -D_DEFAULT_SOURCE
4235     fi
4236 }
4237
4238 probe_libc
4239 test -n "$libc_type" && enable libc_$libc_type
4240 probe_libc host_
4241 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4242
4243 # hacks for compiler/libc/os combinations
4244
4245 case $libc_type in
4246     bionic)
4247         add_compat strtod.o strtod=avpriv_strtod
4248         ;;
4249     glibc)
4250         if enabled tms470; then
4251             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4252             add_cppflags -D__USER_LABEL_PREFIX__=
4253             add_cppflags -D__builtin_memset=memset
4254             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4255             add_cflags   -pds=48    # incompatible redefinition of macro
4256         elif enabled ccc; then
4257             add_ldflags -Wl,-z,now  # calls to libots crash without this
4258         fi
4259         ;;
4260 esac
4261
4262 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4263     add_cppflags '-I\$(SRC_PATH)/compat/float'
4264
4265 esc(){
4266     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4267 }
4268
4269 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4270
4271 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4272
4273 set_default $PATHS_LIST
4274 set_default nm
4275
4276 # we need to build at least one lib type
4277 if ! enabled_any static shared; then
4278     cat <<EOF
4279 At least one library type must be built.
4280 Specify --enable-static to build the static libraries or --enable-shared to
4281 build the shared libraries as well. To only build the shared libraries specify
4282 --disable-static in addition to --enable-shared.
4283 EOF
4284     exit 1
4285 fi
4286
4287 disabled optimizations || check_cflags -fomit-frame-pointer
4288
4289 enable_weak_pic() {
4290     disabled pic && return
4291     enable pic
4292     add_cppflags -DPIC
4293     case "$target_os" in
4294     mingw*|cygwin*)
4295         ;;
4296     *)
4297         add_cflags -fPIC
4298         ;;
4299     esac
4300     add_asflags  -fPIC
4301 }
4302
4303 enabled pic && enable_weak_pic
4304
4305 check_cc <<EOF || die "Symbol mangling check failed."
4306 int ff_extern;
4307 EOF
4308 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4309 extern_prefix=${sym%%ff_extern*}
4310
4311 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4312
4313 _restrict=
4314 for restrict_keyword in restrict __restrict__ __restrict; do
4315     check_cc <<EOF && _restrict=$restrict_keyword && break
4316 void foo(char * $restrict_keyword p);
4317 EOF
4318 done
4319
4320 check_cc <<EOF && enable pragma_deprecated
4321 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4322 EOF
4323
4324 check_cc <<EOF && enable attribute_packed
4325 struct { int x; } __attribute__((packed)) x;
4326 EOF
4327
4328 check_cc <<EOF && enable attribute_may_alias
4329 union { int x; } __attribute__((may_alias)) x;
4330 EOF
4331
4332 check_cc <<EOF || die "endian test failed"
4333 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4334 EOF
4335 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4336
4337 check_gas() {
4338     log "check_gas using '$as' as AS"
4339     # :vararg is used on aarch64, arm and ppc altivec
4340     check_as <<EOF || return 1
4341 .macro m n, y:vararg=0
4342 \n: .int \y
4343 .endm
4344 m x
4345 EOF
4346     # .altmacro is only used in arm asm
4347     ! enabled arm || check_as <<EOF || return 1
4348 .altmacro
4349 EOF
4350     enable gnu_as
4351     return 0
4352 }
4353
4354 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4355     nogas=:
4356     enabled_any arm aarch64 && nogas=die
4357     enabled_all ppc altivec && nogas=warn
4358     as_noop=-v
4359
4360     case $as_type in
4361         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4362         gcc)  gaspp_as_type=gas ;;
4363         *)    gaspp_as_type=$as_type ;;
4364     esac
4365
4366     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4367
4368     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4369         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4370
4371     if ! check_gas ; then
4372         as=${gas:=$as}
4373         check_gas || \
4374             $nogas "GNU assembler not found, install/update gas-preprocessor"
4375     fi
4376
4377     check_as <<EOF && enable as_func
4378 .func test
4379 .endfunc
4380 EOF
4381 fi
4382
4383 check_inline_asm inline_asm_labels '"1:\n"'
4384
4385 if enabled aarch64; then
4386     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4387     # internal assembler in clang 3.3 does not support this instruction
4388     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4389     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4390
4391     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4392
4393 elif enabled alpha; then
4394
4395     check_cflags -mieee
4396
4397 elif enabled arm; then
4398
4399     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4400     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4401     enabled thumb && check_cflags -mthumb || check_cflags -marm
4402
4403     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4404         enable vfp_args
4405     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4406         enable vfp_args
4407     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4408         case "${cross_prefix:-$cc}" in
4409             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4410             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4411 __asm__ (".eabi_attribute 28, 1");
4412 int main(void) { return 0; }
4413 EOF
4414         esac
4415         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4416     fi
4417
4418     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4419     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4420     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4421     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4422     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4423     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4424
4425     [ $target_os = linux ] || [ $target_os = android ] ||
4426         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4427             $ARCH_EXT_LIST_ARM
4428
4429     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4430
4431     check_as <<EOF && enable as_arch_directive
4432 .arch armv7-a
4433 EOF
4434     check_as <<EOF && enable as_fpu_directive
4435 .fpu neon
4436 EOF
4437
4438     # llvm's integrated assembler supports .object_arch from llvm 3.5
4439     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4440         check_as <<EOF && enable as_object_arch
4441 .object_arch armv4
4442 EOF
4443
4444     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4445
4446 elif enabled mips; then
4447
4448     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4449
4450     # make sure that only an instruction set is enabled
4451     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4452
4453     if enabled mips64; then
4454         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4455             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4456                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4457     else
4458         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4459             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4460                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4461     fi
4462
4463 elif enabled parisc; then
4464
4465     if enabled gcc; then
4466         case $($cc -dumpversion) in
4467             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4468         esac
4469     fi
4470
4471 elif enabled ppc; then
4472
4473     enable local_aligned_8 local_aligned_16 local_aligned_32
4474
4475     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4476     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4477     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4478     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4479
4480     if enabled altivec; then
4481         check_cflags -maltivec -mabi=altivec
4482
4483         # check if our compiler supports Motorola AltiVec C API
4484         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4485                                  vector signed int v2 = (vector signed int) { 1 };
4486                                  v1 = vec_add(v1, v2);" ||
4487             disable altivec
4488
4489         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4490     fi
4491
4492     if enabled vsx; then
4493         check_cflags -mvsx &&
4494         check_code cc altivec.h "int v[4] = { 0 };
4495                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4496             disable vsx
4497     fi
4498
4499     if enabled power8; then
4500         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4501     fi
4502
4503 elif enabled x86; then
4504
4505     check_builtin rdtsc    intrin.h   "__rdtsc()"
4506     check_builtin mm_empty mmintrin.h "_mm_empty()"
4507
4508     enable local_aligned_8 local_aligned_16 local_aligned_32
4509
4510     # check whether EBP is available on x86
4511     # As 'i' is stored on the stack, this program will crash
4512     # if the base pointer is used to access it because the
4513     # base pointer is cleared in the inline assembly code.
4514     check_exec_crash <<EOF && enable ebp_available
4515 volatile int i=0;
4516 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4517 return i;
4518 EOF
4519
4520     # check whether EBX is available on x86
4521     check_inline_asm ebx_available '""::"b"(0)' &&
4522         check_inline_asm ebx_available '"":::"%ebx"'
4523
4524     # check whether xmm clobbers are supported
4525     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4526
4527     # check whether binutils is new enough to compile SSSE3/MMXEXT
4528     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4529     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4530
4531     probe_x86asm(){
4532         x86asmexe_probe=$1
4533         if check_cmd $x86asmexe_probe -v; then
4534             x86asmexe=$x86asmexe_probe
4535             x86asm_type=nasm
4536             x86asm_debug="-g -F dwarf"
4537             X86ASMDEP=
4538             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4539         elif check_cmd $x86asmexe_probe --version; then
4540             x86asmexe=$x86asmexe_probe
4541             x86asm_type=yasm
4542             x86asm_debug="-g dwarf2"
4543             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4544             X86ASM_DEPFLAGS=
4545         fi
4546         check_x86asm "movbe ecx, [5]" && enable x86asm
4547     }
4548
4549     if ! disabled_any asm mmx x86asm; then
4550         disable x86asm
4551         for program in $x86asmexe nasm yasm; do
4552             probe_x86asm $program && break
4553         done
4554         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4555         X86ASMFLAGS="-f $objformat"
4556         enabled pic               && append X86ASMFLAGS "-DPIC"
4557         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4558         case "$objformat" in
4559             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4560         esac
4561
4562         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4563         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4564         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4565         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4566         check_x86asm "CPU amdnop"                      || disable cpunop
4567     fi
4568
4569     case "$cpu" in
4570         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4571             disable fast_clz
4572         ;;
4573     esac
4574
4575 fi
4576
4577 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4578
4579 check_ldflags -Wl,--as-needed
4580
4581 if ! disabled network; then
4582     check_func getaddrinfo $network_extralibs
4583     check_func inet_aton $network_extralibs
4584
4585     check_type netdb.h "struct addrinfo"
4586     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4587     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4588     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4589     check_type poll.h "struct pollfd"
4590     check_type netinet/sctp.h "struct sctp_event_subscribe"
4591     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4592     check_type netinet/in.h "struct sockaddr_in6"
4593     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4594     check_type "sys/types.h sys/socket.h" socklen_t
4595
4596     # Prefer arpa/inet.h over winsock2
4597     if check_header arpa/inet.h ; then
4598         check_func closesocket
4599     elif check_header winsock2.h ; then
4600         check_func_headers winsock2.h closesocket -lws2 &&
4601             network_extralibs="-lws2" ||
4602         { check_func_headers winsock2.h closesocket -lws2_32 &&
4603             network_extralibs="-lws2_32"; } || disable winsock2_h network
4604         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4605
4606         check_type ws2tcpip.h socklen_t
4607         check_type ws2tcpip.h "struct addrinfo"
4608         check_type ws2tcpip.h "struct group_source_req"
4609         check_type ws2tcpip.h "struct ip_mreq_source"
4610         check_type ws2tcpip.h "struct ipv6_mreq"
4611         check_type winsock2.h "struct pollfd"
4612         check_struct winsock2.h "struct sockaddr" sa_len
4613         check_type ws2tcpip.h "struct sockaddr_in6"
4614         check_type ws2tcpip.h "struct sockaddr_storage"
4615     else
4616         disable network
4617     fi
4618 fi
4619
4620 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4621 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4622 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4623 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4624
4625 case "$custom_allocator" in
4626     jemalloc)
4627         # jemalloc by default does not use a prefix
4628         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4629     ;;
4630     tcmalloc)
4631         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4632         malloc_prefix=tc_
4633     ;;
4634 esac
4635
4636 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4637 check_func  ${malloc_prefix}memalign            && enable memalign
4638 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4639
4640 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4641     { check_lib clock_gettime time.h clock_gettime ||
4642       check_lib clock_gettime time.h clock_gettime -lrt; }
4643
4644 check_func  fcntl
4645 check_func  fork
4646 check_func  gethrtime
4647 check_func  getopt
4648 check_func  getrusage
4649 check_func  gettimeofday
4650 check_func  gmtime_r
4651 check_func  isatty
4652 check_func  localtime_r
4653 check_func  mach_absolute_time
4654 check_func  mkstemp
4655 check_func  mmap
4656 check_func  mprotect
4657 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4658 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4659 check_func  sched_getaffinity
4660 check_func  setrlimit
4661 check_func  strerror_r
4662 check_func  sysconf
4663 check_func  sysctl
4664 check_func  usleep
4665
4666 check_func_headers io.h setmode
4667 check_func_headers stdlib.h getenv
4668
4669 check_func_headers windows.h GetProcessAffinityMask
4670 check_func_headers windows.h GetProcessTimes
4671 check_func_headers windows.h GetSystemTimeAsFileTime
4672 check_func_headers windows.h LoadLibrary
4673 check_func_headers windows.h MapViewOfFile
4674 check_func_headers windows.h SetConsoleTextAttribute
4675 check_func_headers windows.h Sleep
4676 check_func_headers windows.h VirtualAlloc
4677 check_struct windows.h "CONDITION_VARIABLE" Ptr
4678
4679 check_header d3d11.h
4680 check_header direct.h
4681 check_header dlfcn.h
4682 check_header dxgidebug.h
4683 check_header dxva.h
4684 check_header dxva2api.h
4685 check_header io.h
4686 check_header mach/mach_time.h
4687 check_header malloc.h
4688 check_header poll.h
4689 check_header sys/mman.h
4690 check_header sys/param.h
4691 check_header sys/resource.h
4692 check_header sys/select.h
4693 check_header sys/time.h
4694 check_header sys/un.h
4695 check_header unistd.h
4696 check_header valgrind/valgrind.h
4697 check_header VideoDecodeAcceleration/VDADecoder.h
4698 check_header windows.h
4699
4700 # it seems there are versions of clang in some distros that try to use the
4701 # gcc headers, which explodes for stdatomic
4702 # so we also check that atomics actually work here
4703 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4704
4705 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4706 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4707 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4708 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4709
4710 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4711
4712 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4713 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4714 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4715
4716 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4717 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4718 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4719
4720 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4721 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4722 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4723 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4724 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4725 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4726 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4727 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4728 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4729
4730 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4731
4732 if ! disabled w32threads && ! enabled pthreads; then
4733     check_lib w32threads "windows.h process.h" _beginthreadex
4734 fi
4735
4736 # check for some common methods of building with pthread support
4737 # do this before the optional library checks as some of them require pthreads
4738 if ! disabled pthreads && ! enabled w32threads; then
4739     if check_lib pthreads pthread.h pthread_join -pthread; then
4740         add_cflags -pthread
4741     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4742         add_cflags -pthreads
4743     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4744         :
4745     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4746         :
4747     elif check_func pthread_join; then
4748         enable pthreads
4749     fi
4750 fi
4751
4752 enabled pthreads &&
4753     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4754
4755 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4756 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4757
4758 # On some systems dynamic loading requires no extra linker flags
4759 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4760
4761 check_lib libm math.h sin -lm
4762
4763 atan2f_args=2
4764 ldexpf_args=2
4765 powf_args=2
4766
4767 for func in $MATH_FUNCS; do
4768     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4769 done
4770
4771 # these are off by default, so fail if requested and not available
4772 enabled avisynth          && require_header avisynth/avisynth_c.h
4773 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4774 enabled cuda              && require cuda cuda.h cuInit -lcuda
4775 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4776 enabled frei0r            && require_header frei0r.h
4777 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4778 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4779 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4780 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4781 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4782 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4783 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4784 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4785 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4786                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4787                                done || die "ERROR: libgsm not found"; }
4788 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4789 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4790 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4791 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4792 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4793 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4794 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4795 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4796 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4797 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4798 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4799                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4800 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4801 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4802 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4803 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4804 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4805 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4806 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4807 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4808 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4809 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4810 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4811 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4812                              { enabled libvpx_vp8_decoder &&
4813                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4814                                enabled libvpx_vp8_encoder &&
4815                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4816                                enabled libvpx_vp9_decoder &&
4817                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4818                                enabled libvpx_vp9_encoder &&
4819                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4820                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4821                                    die "libvpx enabled but no supported decoders/encoders found"
4822       &n