lavc: Add coded bitstream read/write API
[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     dirac_parse
1744     dvprofile
1745     faandct
1746     faanidct
1747     fdctdsp
1748     flacdsp
1749     fmtconvert
1750     g722dsp
1751     gmp
1752     golomb
1753     gplv3
1754     h263dsp
1755     h264chroma
1756     h264dsp
1757     h264parse
1758     h264pred
1759     h264qpel
1760     hevc_ps
1761     hpeldsp
1762     huffman
1763     huffyuvdsp
1764     huffyuvencdsp
1765     idctdsp
1766     iirfilter
1767     imdct15
1768     intrax8
1769     iso_media
1770     ividsp
1771     jpegtables
1772     lgplv3
1773     libx262
1774     libxcb_shape
1775     lpc
1776     lzf
1777     me_cmp
1778     mpeg_er
1779     mpegaudio
1780     mpegaudiodsp
1781     mpegaudioheader
1782     mpegvideo
1783     mpegvideoenc
1784     mss34dsp
1785     pixblockdsp
1786     qpeldsp
1787     qsv
1788     qsvdec
1789     qsvenc
1790     rangecoder
1791     riffdec
1792     riffenc
1793     rtpdec
1794     rtpenc_chain
1795     rv34dsp
1796     sinewin
1797     snappy
1798     srtp
1799     startcode
1800     texturedsp
1801     texturedspenc
1802     tpeldsp
1803     vaapi_encode
1804     vc1dsp
1805     videodsp
1806     vp3dsp
1807     vp56dsp
1808     vp8dsp
1809     wma_freqs
1810     wmv2dsp
1811 "
1812
1813 CMDLINE_SELECT="
1814     $ARCH_EXT_LIST
1815     $CONFIG_LIST
1816     $HAVE_LIST_CMDLINE
1817     $THREADS_LIST
1818     asm
1819     cross_compile
1820     debug
1821     extra_warnings
1822     logging
1823     lto
1824     optimizations
1825     rpath
1826 "
1827
1828 PATHS_LIST="
1829     bindir
1830     datadir
1831     docdir
1832     incdir
1833     libdir
1834     mandir
1835     prefix
1836     shlibdir
1837 "
1838
1839 CMDLINE_SET="
1840     $PATHS_LIST
1841     ar
1842     arch
1843     as
1844     cc
1845     objcc
1846     cpu
1847     cross_prefix
1848     custom_allocator
1849     dep_cc
1850     env
1851     extra_version
1852     host_cc
1853     host_cflags
1854     host_extralibs
1855     host_ld
1856     host_ldflags
1857     host_os
1858     ignore_tests
1859     ld
1860     logfile
1861     malloc_prefix
1862     nm
1863     optflags
1864     pkg_config
1865     pkg_config_flags
1866     random_seed
1867     samples
1868     sysinclude
1869     sysroot
1870     target_exec
1871     target_os
1872     target_path
1873     target_samples
1874     toolchain
1875     x86asmexe
1876 "
1877
1878 CMDLINE_APPEND="
1879     extra_cflags
1880     extra_objcflags
1881     host_cppflags
1882 "
1883
1884 # code dependency declarations
1885
1886 # architecture extensions
1887
1888 armv5te_deps="arm"
1889 armv6_deps="arm"
1890 armv6t2_deps="arm"
1891 armv8_deps="aarch64"
1892 neon_deps_any="aarch64 arm"
1893 intrinsics_neon_deps="neon"
1894 vfp_deps_any="aarch64 arm"
1895 vfpv3_deps="vfp"
1896
1897 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1898
1899 altivec_deps="ppc"
1900 dcbzl_deps="ppc"
1901 ldbrx_deps="ppc"
1902 ppc4xx_deps="ppc"
1903 vsx_deps="altivec"
1904 power8_deps="vsx"
1905
1906 loongson_deps="mips"
1907 mips32r1_deps="mips32"
1908 mips32r2_deps="mips32"
1909 mips32r6_deps="mips32"
1910 mips64r1_deps="mips64"
1911 mips64r2_deps="mips64"
1912 mips64r6_deps="mips64"
1913
1914 vis_deps="sparc"
1915
1916 cpunop_deps="i686"
1917 x86_64_select="i686"
1918 x86_64_suggest="fast_cmov"
1919
1920 amd3dnow_deps="mmx"
1921 amd3dnowext_deps="amd3dnow"
1922 i686_deps="x86"
1923 mmx_deps="x86"
1924 mmxext_deps="mmx"
1925 sse_deps="mmxext"
1926 sse2_deps="sse"
1927 sse3_deps="sse2"
1928 ssse3_deps="sse3"
1929 sse4_deps="ssse3"
1930 sse42_deps="sse4"
1931 avx_deps="sse42"
1932 xop_deps="avx"
1933 fma3_deps="avx"
1934 fma4_deps="avx"
1935 avx2_deps="avx"
1936
1937 mmx_external_deps="x86asm"
1938 mmx_inline_deps="inline_asm x86"
1939 mmx_suggest="mmx_external mmx_inline"
1940
1941 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1942     eval dep=\$${ext}_deps
1943     eval ${ext}_external_deps='"${dep}_external"'
1944     eval ${ext}_inline_deps='"${dep}_inline"'
1945     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1946 done
1947
1948 aligned_stack_if_any="aarch64 ppc x86"
1949 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1950 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1951 fast_unaligned_if_any="aarch64 ppc x86"
1952 simd_align_16_if_any="altivec neon sse"
1953 simd_align_32_if_any="avx"
1954
1955 # system capabilities
1956 symver_if_any="symver_asm_label symver_gnu_asm"
1957 valgrind_backtrace_conflict="optimizations"
1958 valgrind_backtrace_deps="valgrind_valgrind_h"
1959
1960 # threading support
1961 atomics_gcc_if="sync_val_compare_and_swap"
1962 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1963 atomics_win32_if="MemoryBarrier"
1964 atomics_native_if_any="$ATOMICS_LIST"
1965 w32threads_deps="atomics_native"
1966 threads_if_any="$THREADS_LIST"
1967
1968 # subsystems
1969 dct_select="rdft"
1970 dirac_parse_select="golomb"
1971 error_resilience_select="me_cmp"
1972 faandct_deps="faan"
1973 faandct_select="fdctdsp"
1974 faanidct_deps="faan"
1975 faanidct_select="idctdsp"
1976 h264dsp_select="startcode"
1977 hevc_ps_select="golomb"
1978 intrax8_select="blockdsp idctdsp"
1979 mdct_select="fft"
1980 rdft_select="fft"
1981 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1982 mpeg_er_select="error_resilience"
1983 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1984 mpegaudiodsp_select="dct"
1985 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1986 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1987 vc1dsp_select="h264chroma qpeldsp startcode"
1988
1989 # decoders / encoders
1990 aac_decoder_select="adts_header imdct15 mdct sinewin"
1991 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1992 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1993 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1994 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1995 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1996 adpcm_g722_decoder_select="g722dsp"
1997 adpcm_g722_encoder_select="g722dsp"
1998 aic_decoder_select="golomb idctdsp"
1999 alac_encoder_select="lpc"
2000 als_decoder_select="bswapdsp"
2001 amrnb_decoder_select="lsp"
2002 amrwb_decoder_select="lsp"
2003 amv_decoder_select="sp5x_decoder"
2004 ape_decoder_select="bswapdsp"
2005 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2006 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2007 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2008 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2009 atrac1_decoder_select="mdct sinewin"
2010 atrac3_decoder_select="mdct"
2011 atrac3p_decoder_select="mdct sinewin"
2012 bink_decoder_select="blockdsp hpeldsp"
2013 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2014 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2015 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2016 clearvideo_decoder_select="idctdsp"
2017 cllc_decoder_select="bswapdsp"
2018 comfortnoise_encoder_select="lpc"
2019 cook_decoder_select="audiodsp mdct sinewin"
2020 cscd_decoder_select="lzo"
2021 cscd_decoder_suggest="zlib"
2022 dca_decoder_select="fmtconvert mdct"
2023 dds_decoder_select="texturedsp"
2024 dnxhd_decoder_select="blockdsp idctdsp"
2025 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2026 dvvideo_decoder_select="dvprofile idctdsp"
2027 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2028 dxa_decoder_deps="zlib"
2029 dxv_decoder_select="lzf texturedsp"
2030 eac3_decoder_select="ac3_decoder"
2031 eac3_encoder_select="ac3_encoder"
2032 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2033 eatgq_decoder_select="aandcttables idctdsp"
2034 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2035 exr_decoder_deps="zlib"
2036 ffv1_decoder_select="rangecoder"
2037 ffv1_encoder_select="rangecoder"
2038 ffvhuff_decoder_select="huffyuv_decoder"
2039 ffvhuff_encoder_select="huffyuv_encoder"
2040 fic_decoder_select="golomb"
2041 flac_decoder_select="flacdsp"
2042 flac_encoder_select="bswapdsp flacdsp lpc"
2043 flashsv_decoder_deps="zlib"
2044 flashsv_encoder_deps="zlib"
2045 flashsv2_decoder_deps="zlib"
2046 flv_decoder_select="h263_decoder"
2047 flv_encoder_select="h263_encoder"
2048 fourxm_decoder_select="blockdsp bswapdsp"
2049 fraps_decoder_select="bswapdsp huffman"
2050 g2m_decoder_deps="zlib"
2051 g2m_decoder_select="blockdsp idctdsp jpegtables"
2052 h261_decoder_select="mpeg_er mpegvideo"
2053 h261_encoder_select="aandcttables mpegvideoenc"
2054 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2055 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2056 h263i_decoder_select="h263_decoder"
2057 h263p_encoder_select="h263_encoder"
2058 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2059 h264_decoder_suggest="error_resilience"
2060 hap_decoder_select="snappy texturedsp"
2061 hap_encoder_deps="libsnappy"
2062 hap_encoder_select="texturedspenc"
2063 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2064 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2065 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2066 iac_decoder_select="imc_decoder"
2067 imc_decoder_select="bswapdsp fft mdct sinewin"
2068 indeo3_decoder_select="hpeldsp"
2069 indeo4_decoder_select="ividsp"
2070 indeo5_decoder_select="ividsp"
2071 interplay_video_decoder_select="hpeldsp"
2072 jpegls_decoder_select="mjpeg_decoder"
2073 jv_decoder_select="blockdsp"
2074 lagarith_decoder_select="huffyuvdsp"
2075 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2076 magicyuv_decoder_select="huffyuvdsp"
2077 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2078 metasound_decoder_select="lsp mdct sinewin"
2079 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2080 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2081 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2082 mjpegb_decoder_select="mjpeg_decoder"
2083 mlp_decoder_select="mlp_parser"
2084 motionpixels_decoder_select="bswapdsp"
2085 mp1_decoder_select="mpegaudio"
2086 mp1float_decoder_select="mpegaudio"
2087 mp2_decoder_select="mpegaudio"
2088 mp2float_decoder_select="mpegaudio"
2089 mp3_decoder_select="mpegaudio"
2090 mp3adu_decoder_select="mpegaudio"
2091 mp3adufloat_decoder_select="mpegaudio"
2092 mp3float_decoder_select="mpegaudio"
2093 mp3on4_decoder_select="mpegaudio"
2094 mp3on4float_decoder_select="mpegaudio"
2095 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2096 mpc8_decoder_select="mpegaudiodsp"
2097 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2098 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2099 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2100 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2101 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2102 mpeg4_encoder_select="h263_encoder"
2103 msa1_decoder_select="mss34dsp"
2104 msmpeg4v1_decoder_select="h263_decoder"
2105 msmpeg4v2_decoder_select="h263_decoder"
2106 msmpeg4v2_encoder_select="h263_encoder"
2107 msmpeg4v3_decoder_select="h263_decoder"
2108 msmpeg4v3_encoder_select="h263_encoder"
2109 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2110 mts2_decoder_select="mss34dsp"
2111 mxpeg_decoder_select="mjpeg_decoder"
2112 nellymoser_decoder_select="mdct sinewin"
2113 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2114 nuv_decoder_select="idctdsp lzo"
2115 on2avc_decoder_select="mdct"
2116 opus_decoder_deps="avresample"
2117 opus_decoder_select="imdct15"
2118 png_decoder_deps="zlib"
2119 png_encoder_deps="zlib"
2120 png_encoder_select="huffyuvencdsp"
2121 prores_decoder_select="idctdsp"
2122 prores_encoder_select="fdctdsp"
2123 qcelp_decoder_select="lsp"
2124 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2125 ra_144_encoder_select="audio_frame_queue lpc"
2126 ralf_decoder_select="golomb"
2127 rscc_decoder_deps="zlib"
2128 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2129 rv10_encoder_select="h263_encoder"
2130 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2131 rv20_encoder_select="h263_encoder"
2132 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2133 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2134 screenpresso_decoder_deps="zlib"
2135 sipr_decoder_select="lsp"
2136 sp5x_decoder_select="mjpeg_decoder"
2137 svq1_decoder_select="hpeldsp"
2138 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2139 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2140 svq3_decoder_suggest="zlib"
2141 tak_decoder_select="audiodsp"
2142 tdsc_decoder_deps="zlib"
2143 tdsc_decoder_select="mjpeg_decoder"
2144 theora_decoder_select="vp3_decoder"
2145 thp_decoder_select="mjpeg_decoder"
2146 tiff_decoder_suggest="zlib"
2147 tiff_encoder_suggest="zlib"
2148 truehd_decoder_select="mlp_decoder"
2149 truemotion2_decoder_select="bswapdsp"
2150 truespeech_decoder_select="bswapdsp"
2151 tscc_decoder_deps="zlib"
2152 txd_decoder_select="texturedsp"
2153 twinvq_decoder_select="mdct lsp sinewin"
2154 utvideo_decoder_select="bswapdsp huffyuvdsp"
2155 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2156 vble_decoder_select="huffyuvdsp"
2157 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2158 vc1image_decoder_select="vc1_decoder"
2159 vorbis_decoder_select="mdct"
2160 vorbis_encoder_select="mdct"
2161 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2162 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2163 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2164 vp6a_decoder_select="vp6_decoder"
2165 vp6f_decoder_select="vp6_decoder"
2166 vp7_decoder_select="h264pred videodsp vp8dsp"
2167 vp8_decoder_select="h264pred videodsp vp8dsp"
2168 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2169 webp_decoder_select="vp8_decoder"
2170 wmapro_decoder_select="mdct sinewin wma_freqs"
2171 wmav1_decoder_select="mdct sinewin wma_freqs"
2172 wmav1_encoder_select="mdct sinewin wma_freqs"
2173 wmav2_decoder_select="mdct sinewin wma_freqs"
2174 wmav2_encoder_select="mdct sinewin wma_freqs"
2175 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2176 wmv1_decoder_select="h263_decoder"
2177 wmv1_encoder_select="h263_encoder"
2178 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2179 wmv2_encoder_select="h263_encoder wmv2dsp"
2180 wmv3_decoder_select="vc1_decoder"
2181 wmv3image_decoder_select="wmv3_decoder"
2182 zerocodec_decoder_deps="zlib"
2183 zlib_decoder_deps="zlib"
2184 zlib_encoder_deps="zlib"
2185 zmbv_decoder_deps="zlib"
2186 zmbv_encoder_deps="zlib"
2187
2188 # hardware accelerators
2189 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2190 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2191 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2192 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2193
2194 h263_vaapi_hwaccel_deps="vaapi"
2195 h263_vaapi_hwaccel_select="h263_decoder"
2196 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2197 h264_cuvid_hwaccel_select="h264_decoder"
2198 h264_d3d11va_hwaccel_deps="d3d11va"
2199 h264_d3d11va_hwaccel_select="h264_decoder"
2200 h264_d3d11va2_hwaccel_deps="d3d11va"
2201 h264_d3d11va2_hwaccel_select="h264_decoder"
2202 h264_dxva2_hwaccel_deps="dxva2"
2203 h264_dxva2_hwaccel_select="h264_decoder"
2204 h264_mmal_hwaccel_deps="mmal"
2205 h264_qsv_hwaccel_deps="libmfx"
2206 h264_vaapi_hwaccel_deps="vaapi"
2207 h264_vaapi_hwaccel_select="h264_decoder"
2208 h264_vda_hwaccel_deps="vda"
2209 h264_vda_hwaccel_select="h264_decoder"
2210 h264_vda_old_hwaccel_deps="vda"
2211 h264_vda_old_hwaccel_select="h264_decoder"
2212 h264_vdpau_hwaccel_deps="vdpau"
2213 h264_vdpau_hwaccel_select="h264_decoder"
2214 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2215 hevc_cuvid_hwaccel_select="hevc_decoder"
2216 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2217 hevc_d3d11va_hwaccel_select="hevc_decoder"
2218 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2219 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2220 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2221 hevc_dxva2_hwaccel_select="hevc_decoder"
2222 hevc_qsv_hwaccel_deps="libmfx"
2223 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2224 hevc_vaapi_hwaccel_select="hevc_decoder"
2225 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2226 hevc_vdpau_hwaccel_select="hevc_decoder"
2227 mpeg1_vdpau_hwaccel_deps="vdpau"
2228 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2229 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2230 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2231 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2232 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2233 mpeg2_dxva2_hwaccel_deps="dxva2"
2234 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2235 mpeg2_mmal_hwaccel_deps="mmal"
2236 mpeg2_qsv_hwaccel_deps="libmfx"
2237 mpeg2_vaapi_hwaccel_deps="vaapi"
2238 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_vdpau_hwaccel_deps="vdpau"
2240 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2241 mpeg4_vaapi_hwaccel_deps="vaapi"
2242 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2243 mpeg4_vdpau_hwaccel_deps="vdpau"
2244 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2245 vc1_d3d11va_hwaccel_deps="d3d11va"
2246 vc1_d3d11va_hwaccel_select="vc1_decoder"
2247 vc1_d3d11va2_hwaccel_deps="d3d11va"
2248 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2249 vc1_dxva2_hwaccel_deps="dxva2"
2250 vc1_dxva2_hwaccel_select="vc1_decoder"
2251 vc1_mmal_hwaccel_deps="mmal"
2252 vc1_qsv_hwaccel_deps="libmfx"
2253 vc1_vaapi_hwaccel_deps="vaapi"
2254 vc1_vaapi_hwaccel_select="vc1_decoder"
2255 vc1_vdpau_hwaccel_deps="vdpau"
2256 vc1_vdpau_hwaccel_select="vc1_decoder"
2257 vp8_qsv_hwaccel_deps="libmfx"
2258 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2259 vp8_vaapi_hwaccel_select="vp8_decoder"
2260 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2261 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2262 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2263 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2264 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2265
2266 # hardware-accelerated codecs
2267 nvenc_deps_any="libdl LoadLibrary"
2268 omx_deps="libdl pthreads"
2269 omx_rpi_select="omx"
2270 qsv_deps="libmfx"
2271 qsvdec_select="qsv"
2272 qsvenc_select="qsv"
2273 vaapi_encode_deps="vaapi"
2274
2275 hwupload_cuda_filter_deps="cuda"
2276 scale_npp_filter_deps="cuda libnpp"
2277
2278 h264_mmal_decoder_deps="mmal"
2279 h264_nvenc_encoder_deps="nvenc"
2280 h264_omx_encoder_deps="omx"
2281 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2282 h264_qsv_encoder_select="qsvenc"
2283 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2284 h264_vaapi_encoder_select="vaapi_encode golomb"
2285 hevc_nvenc_encoder_deps="nvenc"
2286 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2287 hevc_qsv_encoder_select="hevc_ps qsvenc"
2288 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2289 hevc_vaapi_encoder_select="vaapi_encode golomb"
2290 mjpeg_qsv_encoder_deps="libmfx"
2291 mjpeg_qsv_encoder_select="qsvenc"
2292 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2293 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2294 mpeg2_mmal_decoder_deps="mmal"
2295 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2296 mpeg2_qsv_encoder_select="qsvenc"
2297 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2298 mpeg2_vaapi_encoder_select="vaapi_encode"
2299 mpeg4_omx_encoder_deps="omx"
2300 vc1_mmal_decoder_deps="mmal"
2301 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2302 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2303 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2304 vp8_vaapi_encoder_select="vaapi_encode"
2305 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2306 vp9_vaapi_encoder_select="vaapi_encode"
2307
2308 nvenc_h264_encoder_select="h264_nvenc_encoder"
2309 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2310
2311 # parsers
2312 aac_parser_select="adts_header"
2313 h264_parser_select="golomb h264dsp h264parse"
2314 hevc_parser_select="hevc_ps"
2315 mpegaudio_parser_select="mpegaudioheader"
2316 mpegvideo_parser_select="mpegvideo"
2317 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2318 vc1_parser_select="vc1dsp"
2319
2320 # bitstream_filters
2321 aac_adtstoasc_bsf_select="adts_header"
2322 mjpeg2jpeg_bsf_select="jpegtables"
2323
2324 # external libraries
2325 avisynth_deps="LoadLibrary"
2326 avxsynth_deps="libdl"
2327 avisynth_demuxer_deps_any="avisynth avxsynth"
2328 avisynth_demuxer_select="riffdec"
2329 libdcadec_decoder_deps="libdcadec"
2330 libfaac_encoder_deps="libfaac"
2331 libfaac_encoder_select="audio_frame_queue"
2332 libfdk_aac_decoder_deps="libfdk_aac"
2333 libfdk_aac_encoder_deps="libfdk_aac"
2334 libfdk_aac_encoder_select="audio_frame_queue"
2335 libgsm_decoder_deps="libgsm"
2336 libgsm_encoder_deps="libgsm"
2337 libgsm_ms_decoder_deps="libgsm"
2338 libgsm_ms_encoder_deps="libgsm"
2339 libilbc_decoder_deps="libilbc"
2340 libilbc_encoder_deps="libilbc"
2341 libkvazaar_encoder_deps="libkvazaar"
2342 libmp3lame_encoder_deps="libmp3lame"
2343 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2344 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2345 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2346 libopencore_amrnb_encoder_select="audio_frame_queue"
2347 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2348 libopenh264_decoder_deps="libopenh264"
2349 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2350 libopenh264_encoder_deps="libopenh264"
2351 libopenjpeg_decoder_deps="libopenjpeg"
2352 libopenjpeg_encoder_deps="libopenjpeg"
2353 libopus_decoder_deps="libopus"
2354 libopus_encoder_deps="libopus"
2355 libopus_encoder_select="audio_frame_queue"
2356 libschroedinger_decoder_deps="libschroedinger"
2357 libschroedinger_encoder_deps="libschroedinger"
2358 libspeex_decoder_deps="libspeex"
2359 libspeex_encoder_deps="libspeex"
2360 libspeex_encoder_select="audio_frame_queue"
2361 libtheora_encoder_deps="libtheora"
2362 libtwolame_encoder_deps="libtwolame"
2363 libvo_aacenc_encoder_deps="libvo_aacenc"
2364 libvo_aacenc_encoder_select="audio_frame_queue"
2365 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2366 libvorbis_encoder_deps="libvorbis"
2367 libvorbis_encoder_select="audio_frame_queue"
2368 libvpx_vp8_decoder_deps="libvpx"
2369 libvpx_vp8_encoder_deps="libvpx"
2370 libvpx_vp9_decoder_deps="libvpx"
2371 libvpx_vp9_encoder_deps="libvpx"
2372 libwavpack_encoder_deps="libwavpack"
2373 libwavpack_encoder_select="audio_frame_queue"
2374 libwebp_encoder_deps="libwebp"
2375 libx262_encoder_deps="libx262"
2376 libx264_encoder_deps="libx264"
2377 libx265_encoder_deps="libx265"
2378 libxavs_encoder_deps="libxavs"
2379 libxvid_encoder_deps="libxvid mkstemp"
2380
2381 # demuxers / muxers
2382 ac3_demuxer_select="ac3_parser"
2383 asf_demuxer_select="riffdec"
2384 asf_muxer_select="riffenc"
2385 asf_stream_muxer_select="asf_muxer"
2386 avi_demuxer_select="iso_media riffdec"
2387 avi_muxer_select="riffenc"
2388 caf_demuxer_select="iso_media riffdec"
2389 dash_muxer_select="mp4_muxer"
2390 dirac_demuxer_select="dirac_parser"
2391 dv_demuxer_select="dvprofile"
2392 dv_muxer_select="dvprofile"
2393 dxa_demuxer_select="riffdec"
2394 eac3_demuxer_select="ac3_parser"
2395 f4v_muxer_select="mov_muxer"
2396 flac_demuxer_select="flac_parser"
2397 hds_muxer_select="flv_muxer"
2398 hls_muxer_select="mpegts_muxer"
2399 ipod_muxer_select="mov_muxer"
2400 ismv_muxer_select="mov_muxer"
2401 matroska_audio_muxer_select="matroska_muxer"
2402 matroska_demuxer_select="iso_media riffdec"
2403 matroska_demuxer_suggest="bzlib lzo zlib"
2404 matroska_muxer_select="iso_media riffenc"
2405 mmf_muxer_select="riffenc"
2406 mov_demuxer_select="iso_media riffdec"
2407 mov_demuxer_suggest="zlib"
2408 mov_muxer_select="iso_media riffenc rtpenc_chain"
2409 mp3_demuxer_select="mpegaudio_parser"
2410 mp3_muxer_select="mpegaudioheader"
2411 mp4_muxer_select="mov_muxer"
2412 mpegts_demuxer_select="iso_media"
2413 mpegts_muxer_select="adts_muxer latm_muxer"
2414 mpegtsraw_demuxer_select="mpegts_demuxer"
2415 mxf_d10_muxer_select="mxf_muxer"
2416 nut_muxer_select="riffenc"
2417 nuv_demuxer_select="riffdec"
2418 oga_muxer_select="ogg_muxer"
2419 ogg_demuxer_select="dirac_parse"
2420 opus_muxer_select="ogg_muxer"
2421 psp_muxer_select="mov_muxer"
2422 rtp_demuxer_select="sdp_demuxer"
2423 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2424 rtsp_demuxer_select="http_protocol rtpdec"
2425 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2426 sap_demuxer_select="sdp_demuxer"
2427 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2428 sdp_demuxer_select="rtpdec"
2429 smoothstreaming_muxer_select="ismv_muxer"
2430 spdif_demuxer_select="adts_header"
2431 spdif_muxer_select="adts_header"
2432 spx_muxer_select="ogg_muxer"
2433 swf_demuxer_suggest="zlib"
2434 tak_demuxer_select="tak_parser"
2435 tg2_muxer_select="mov_muxer"
2436 tgp_muxer_select="mov_muxer"
2437 w64_demuxer_select="wav_demuxer"
2438 wav_demuxer_select="riffdec"
2439 wav_muxer_select="riffenc"
2440 webm_muxer_select="iso_media riffenc"
2441 wtv_demuxer_select="mpegts_demuxer riffdec"
2442 xmv_demuxer_select="riffdec"
2443 xwma_demuxer_select="riffdec"
2444
2445 # indevs / outdevs
2446 alsa_indev_deps="alsa"
2447 alsa_outdev_deps="alsa"
2448 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2449 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2450 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2451 dv1394_indev_deps="dv1394"
2452 dv1394_indev_select="dv_demuxer"
2453 fbdev_indev_deps="linux_fb_h"
2454 jack_indev_deps="libjack"
2455 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2456 libcdio_indev_deps="libcdio"
2457 libdc1394_indev_deps="libdc1394"
2458 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2459 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2460 pulse_indev_deps="libpulse"
2461 sndio_indev_deps="sndio"
2462 sndio_outdev_deps="sndio"
2463 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2464 vfwcap_indev_deps="vfw32 vfwcap_defines"
2465 xcbgrab_indev_deps="libxcb libxcb_shape"
2466 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2467
2468 # protocols
2469 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2470 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2471 ffrtmpcrypt_protocol_select="tcp_protocol"
2472 ffrtmphttp_protocol_conflict="librtmp_protocol"
2473 ffrtmphttp_protocol_select="http_protocol"
2474 gopher_protocol_select="network"
2475 http_protocol_select="tcp_protocol"
2476 http_protocol_suggest="zlib"
2477 httpproxy_protocol_select="tcp_protocol"
2478 httpproxy_protocol_suggest="zlib"
2479 https_protocol_select="tls_protocol"
2480 https_protocol_suggest="zlib"
2481 icecast_protocol_select="http_protocol"
2482 librtmp_protocol_deps="librtmp"
2483 librtmpe_protocol_deps="librtmp"
2484 librtmps_protocol_deps="librtmp"
2485 librtmpt_protocol_deps="librtmp"
2486 librtmpte_protocol_deps="librtmp"
2487 mmsh_protocol_select="http_protocol"
2488 mmst_protocol_select="network"
2489 rtmp_protocol_conflict="librtmp_protocol"
2490 rtmp_protocol_select="tcp_protocol"
2491 rtmp_protocol_suggest="zlib"
2492 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2493 rtmpe_protocol_suggest="zlib"
2494 rtmps_protocol_conflict="librtmp_protocol"
2495 rtmps_protocol_select="tls_protocol"
2496 rtmps_protocol_suggest="zlib"
2497 rtmpt_protocol_select="ffrtmphttp_protocol"
2498 rtmpt_protocol_suggest="zlib"
2499 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2500 rtmpte_protocol_suggest="zlib"
2501 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2502 rtmpts_protocol_suggest="zlib"
2503 rtp_protocol_select="udp_protocol"
2504 sctp_protocol_deps="struct_sctp_event_subscribe"
2505 sctp_protocol_select="network"
2506 srtp_protocol_select="rtp_protocol srtp"
2507 tcp_protocol_select="network"
2508 tls_protocol_deps_any="gnutls openssl"
2509 tls_protocol_select="tcp_protocol"
2510 udp_protocol_select="network"
2511 unix_protocol_deps="sys_un_h"
2512 unix_protocol_select="network"
2513
2514 # filters
2515 asyncts_filter_deps="avresample"
2516 blackframe_filter_deps="gpl"
2517 boxblur_filter_deps="gpl"
2518 bs2b_filter_deps="libbs2b"
2519 cropdetect_filter_deps="gpl"
2520 deinterlace_qsv_filter_deps="libmfx"
2521 deinterlace_vaapi_filter_deps="vaapi"
2522 delogo_filter_deps="gpl"
2523 drawtext_filter_deps="libfreetype"
2524 drawtext_filter_suggest="libfontconfig"
2525 frei0r_filter_deps="frei0r libdl"
2526 frei0r_src_filter_deps="frei0r libdl"
2527 hdcd_filter_deps="libhdcd"
2528 hqdn3d_filter_deps="gpl"
2529 interlace_filter_deps="gpl"
2530 movie_filter_deps="avcodec avformat"
2531 ocv_filter_deps="libopencv"
2532 resample_filter_deps="avresample"
2533 scale_filter_deps="swscale"
2534 scale_qsv_filter_deps="libmfx"
2535 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2536
2537 # examples
2538 decode_audio_example_deps="avcodec avutil"
2539 decode_video_example_deps="avcodec avutil"
2540 encode_audio_example_deps="avcodec avutil"
2541 encode_video_example_deps="avcodec avutil"
2542 filter_audio_example_deps="avfilter avutil"
2543 metadata_example_deps="avformat avutil"
2544 output_example_deps="avcodec avformat avresample avutil swscale"
2545 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2546 transcode_aac_example_deps="avcodec avformat avresample"
2547
2548 # EXTRALIBS_LIST
2549 cpu_init_extralibs="pthreads_extralibs"
2550 cws2fws_extralibs="zlib_extralibs"
2551
2552 # libraries, in linking order
2553 avcodec_deps="avutil"
2554 avcodec_select="null_bsf"
2555 avdevice_deps="avformat avcodec avutil"
2556 avfilter_deps="avutil"
2557 avformat_deps="avcodec avutil"
2558 avformat_suggest="network"
2559 avresample_deps="avutil"
2560 swscale_deps="avutil"
2561
2562 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2563 avdevice_extralibs="libm_extralibs"
2564 avformat_extralibs="libm_extralibs"
2565 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2566 avresample_extralibs="libm_extralibs"
2567 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"
2568 swscale_extralibs="libm_extralibs"
2569
2570 # programs
2571 avconv_deps="avcodec avfilter avformat avresample swscale"
2572 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2573                fps_filter null_filter resample_filter scale_filter
2574                trim_filter"
2575 avconv_suggest="psapi shell32"
2576 avplay_deps="avcodec avfilter avformat avresample sdl"
2577 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2578 avplay_suggest="shell32"
2579 avprobe_deps="avcodec avformat"
2580 avprobe_suggest="shell32"
2581
2582 # documentation
2583 pod2man_deps="doc"
2584 texi2html_deps="doc"
2585
2586 # default parameters
2587
2588 logfile="avbuild/config.log"
2589
2590 # installation paths
2591 prefix_default="/usr/local"
2592 bindir_default='${prefix}/bin'
2593 datadir_default='${prefix}/share/avconv'
2594 docdir_default='${prefix}/share/doc/libav'
2595 incdir_default='${prefix}/include'
2596 libdir_default='${prefix}/lib'
2597 mandir_default='${prefix}/share/man'
2598 shlibdir_default="$libdir_default"
2599
2600 # toolchain
2601 ar_default="ar"
2602 cc_default="gcc"
2603 host_cc_default="gcc"
2604 x86asmexe_default="nasm"
2605 ln_s="ln -s -f"
2606 nm_default="nm -g"
2607 pkg_config_default=pkg-config
2608 ranlib="ranlib"
2609 strip="strip"
2610 version_script='--version-script'
2611
2612 # machine
2613 arch_default=$(uname -m)
2614 cpu="generic"
2615 intrinsics="none"
2616
2617 # OS
2618 target_os_default=$(tolower $(uname -s))
2619 host_os=$target_os_default
2620
2621 # configurable options
2622 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2623
2624 enable asm
2625 enable debug
2626 enable doc
2627 enable faan faandct faanidct
2628 enable optimizations
2629 enable safe_bitstream_reader
2630 enable static
2631 enable swscale_alpha
2632 enable valgrind_backtrace
2633
2634 # By default, enable only those hwaccels that have no external dependencies.
2635 enable d3d11va dxva2 vda vdpau
2636
2637 # internal components are enabled by default
2638 enable $EXTRALIBS_LIST
2639
2640 # Avoid external, non-system, libraries getting enabled by dependency resolution
2641 disable $EXTERNAL_LIBRARY_LIST
2642
2643 # build settings
2644 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2645 LIBPREF="lib"
2646 LIBSUF=".a"
2647 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2648 SLIBPREF="lib"
2649 SLIBSUF=".so"
2650 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2651 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2652 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2653 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2654 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2655 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2656 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2657
2658 asflags_filter=echo
2659 cflags_filter=echo
2660 ldflags_filter=echo
2661
2662 AS_C='-c'
2663 AS_O='-o $@'
2664 CC_C='-c'
2665 CC_E='-E -o $@'
2666 CC_O='-o $@'
2667 OBJCC_C='-c'
2668 OBJCC_E='-E -o $@'
2669 OBJCC_O='-o $@'
2670 X86ASM_O='-o $@'
2671 LD_O='-o $@'
2672 LD_LIB='-l%'
2673 LD_PATH='-L'
2674 HOSTCC_C='-c'
2675 HOSTCC_E='-E -o $@'
2676 HOSTCC_O='-o $@'
2677 HOSTLD_O='-o $@'
2678
2679 host_extralibs='-lm'
2680 host_cflags_filter=echo
2681 host_ldflags_filter=echo
2682
2683 target_path='$(CURDIR)'
2684
2685 # since the object filename is not given with the -MM flag, the compiler
2686 # is only able to print the basename, and we must add the path ourselves
2687 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2688 DEPFLAGS='-MM'
2689
2690 mkdir -p avbuild
2691
2692 # find source path
2693 if test -f configure; then
2694     source_path=.
2695 else
2696     source_path=$(cd $(dirname "$0"); pwd)
2697     echo "$source_path" | grep -q '[[:blank:]]' &&
2698         die "Out of tree builds are impossible with whitespace in source path."
2699     test -e "$source_path/config.h" &&
2700         die "Out of tree builds are impossible with config.h in source dir."
2701 fi
2702
2703 for v in "$@"; do
2704     r=${v#*=}
2705     l=${v%"$r"}
2706     r=$(sh_quote "$r")
2707     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2708 done
2709
2710 find_things(){
2711     thing=$1
2712     pattern=$2
2713     file=$source_path/$3
2714     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2715 }
2716
2717 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2718 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2719 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2720 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2721 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2722 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2723 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2724 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2725 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2726
2727 find_things_extern(){
2728     thing=$1
2729     pattern=$2
2730     file=$source_path/$3
2731     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2732 }
2733
2734 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2735 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2736
2737 AVCODEC_COMPONENTS_LIST="
2738     $BSF_LIST
2739     $DECODER_LIST
2740     $ENCODER_LIST
2741     $HWACCEL_LIST
2742     $PARSER_LIST
2743 "
2744
2745 AVDEVICE_COMPONENTS_LIST="
2746     $INDEV_LIST
2747     $OUTDEV_LIST
2748 "
2749
2750 AVFILTER_COMPONENTS_LIST="
2751     $FILTER_LIST
2752 "
2753
2754 AVFORMAT_COMPONENTS_LIST="
2755     $DEMUXER_LIST
2756     $MUXER_LIST
2757     $PROTOCOL_LIST
2758 "
2759
2760 ALL_COMPONENTS="
2761     $AVCODEC_COMPONENTS_LIST
2762     $AVDEVICE_COMPONENTS_LIST
2763     $AVFILTER_COMPONENTS_LIST
2764     $AVFORMAT_COMPONENTS_LIST
2765 "
2766
2767 for n in $COMPONENT_LIST; do
2768     v=$(toupper ${n%s})_LIST
2769     eval enable \$$v
2770     eval ${n}_if_any="\$$v"
2771 done
2772
2773 enable $ARCH_EXT_LIST
2774
2775 die_unknown(){
2776     echo "Unknown option \"$1\"."
2777     echo "See $0 --help for available options."
2778     exit 1
2779 }
2780
2781 print_3_columns() {
2782     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2783 }
2784
2785 show_list() {
2786     suffix=_$1
2787     shift
2788     echo $* | sed s/$suffix//g | print_3_columns
2789     exit 0
2790 }
2791
2792 rand_list(){
2793     IFS=', '
2794     set -- $*
2795     unset IFS
2796     for thing; do
2797         comp=${thing%:*}
2798         prob=${thing#$comp}
2799         prob=${prob#:}
2800         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2801         echo "prob ${prob:-0.5}"
2802         printf '%s\n' $comp
2803     done
2804 }
2805
2806 do_random(){
2807     action=$1
2808     shift
2809     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2810     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2811 }
2812
2813 for opt do
2814     optval="${opt#*=}"
2815     case "$opt" in
2816         --extra-ldflags=*)
2817             add_ldflags $optval
2818         ;;
2819         --extra-ldexeflags=*)
2820             add_ldexeflags $optval
2821         ;;
2822         --extra-ldsoflags=*)
2823             add_ldsoflags $optval
2824         ;;
2825         --extra-libs=*)
2826             add_extralibs $optval
2827         ;;
2828         --disable-devices)
2829             disable $INDEV_LIST $OUTDEV_LIST
2830         ;;
2831         --enable-debug=*)
2832             debuglevel="$optval"
2833         ;;
2834         --disable-programs)
2835             disable $PROGRAM_LIST
2836         ;;
2837         --disable-everything)
2838             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2839         ;;
2840         --disable-all)
2841             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2842             disable $LIBRARY_LIST $PROGRAM_LIST doc
2843         ;;
2844         --enable-random|--disable-random)
2845             action=${opt%%-random}
2846             do_random ${action#--} $COMPONENT_LIST
2847         ;;
2848         --enable-random=*|--disable-random=*)
2849             action=${opt%%-random=*}
2850             do_random ${action#--} $optval
2851         ;;
2852         --enable-*=*|--disable-*=*)
2853             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2854             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2855             eval list=\$$(toupper $thing)_LIST
2856             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2857             $action $(filter "$name" $list)
2858         ;;
2859         --enable-avserver|--disable-avserver*)
2860             warn "avserver has been removed, the ${opt} option is only"\
2861                  "provided for compatibility and will be removed in the future"
2862         ;;
2863         --enable-yasm|--disable-yasm)
2864             warn "The ${opt} option is only provided for compatibility and will be\n"\
2865                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2866             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2867         ;;
2868         --enable-?*|--disable-?*)
2869             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2870             if is_in $option $COMPONENT_LIST; then
2871                 test $action = disable && action=unset
2872                 eval $action \$$(toupper ${option%s})_LIST
2873             elif is_in $option $CMDLINE_SELECT; then
2874                 $action $option
2875             else
2876                 die_unknown $opt
2877             fi
2878         ;;
2879         --list-*)
2880             NAME="${opt#--list-}"
2881             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2882             NAME=${NAME%s}
2883             eval show_list $NAME \$$(toupper $NAME)_LIST
2884         ;;
2885         --help|-h) show_help
2886         ;;
2887         --quiet|-q) quiet=yes
2888         ;;
2889         *)
2890             optname="${opt%%=*}"
2891             optname="${optname#--}"
2892             optname=$(echo "$optname" | sed 's/-/_/g')
2893             if is_in $optname $CMDLINE_SET; then
2894                 eval $optname='$optval'
2895             elif is_in $optname $CMDLINE_APPEND; then
2896                 append $optname "$optval"
2897             else
2898                 die_unknown $opt
2899             fi
2900         ;;
2901     esac
2902 done
2903
2904 for e in $env; do
2905     eval "export $e"
2906 done
2907
2908 disabled logging && logfile=/dev/null
2909
2910 # Die early if licensing-related configure options are incompatible.
2911 die_license_disabled() {
2912     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2913 }
2914
2915 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2916 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2917 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2918
2919 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2920
2921 enabled_all gnutls openssl &&
2922     die "GnuTLS and OpenSSL must not be enabled at the same time."
2923
2924 # Disable all the library-specific components if the library itself
2925 # is disabled, see AVCODEC_LIST and following _LIST variables.
2926
2927 disable_components(){
2928     disabled ${1} && disable $(
2929         eval components="\$$(toupper ${1})_COMPONENTS"
2930         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2931     )
2932 }
2933
2934 map 'disable_components $v' $LIBRARY_LIST
2935
2936 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2937 set >> $logfile
2938
2939 case "$toolchain" in
2940     *-asan)
2941         cc_default="${toolchain%-asan}"
2942         add_cflags  -fsanitize=address
2943         add_ldflags -fsanitize=address
2944     ;;
2945     *-msan)
2946         cc_default="${toolchain%-msan}"
2947         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2948         add_ldflags -fsanitize=memory
2949     ;;
2950     *-tsan)
2951         cc_default="${toolchain%-tsan}"
2952         add_cflags  -fsanitize=thread -fPIE
2953         add_ldflags -fsanitize=thread -pie
2954         case "$toolchain" in
2955             gcc-tsan)
2956                 add_cflags  -fPIC
2957                 add_ldflags -fPIC
2958                 ;;
2959         esac
2960     ;;
2961     *-usan)
2962         cc_default="${toolchain%-usan}"
2963         add_cflags  -fsanitize=undefined
2964         add_ldflags -fsanitize=undefined
2965         case "$toolchain" in
2966             clang-usan)
2967                 add_cflags -O1
2968                 ;;
2969         esac
2970     ;;
2971     valgrind-*)
2972         target_exec_default="valgrind"
2973         case "$toolchain" in
2974             valgrind-massif)
2975                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2976                 ;;
2977             valgrind-memcheck)
2978                 target_exec_args="--track-origins=yes --leak-check=full"
2979                 ;;
2980         esac
2981     ;;
2982     msvc)
2983         # Check whether the current MSVC version needs the C99 converter.
2984         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2985         # support enough of C99 to build libav. Default to the new
2986         # behaviour if the regexp was unable to match anything, since this
2987         # successfully parses the version number of existing supported
2988         # versions that require the converter (MSVC 2010 and 2012).
2989         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2990         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2991             cc_default="cl"
2992         else
2993             cc_default="c99wrap cl"
2994         fi
2995         ld_default="$source_path/compat/windows/mslink"
2996         nm_default="dumpbin -symbols"
2997         ar_default="lib"
2998         case "$arch" in
2999         arm*)
3000             as_default="armasm"
3001             ;;
3002         esac
3003         target_os_default="win32"
3004         # Use a relative path for TMPDIR. This makes sure all the
3005         # ffconf temp files are written with a relative path, avoiding
3006         # issues with msys/win32 path conversion for MSVC parameters
3007         # such as -Fo<file> or -out:<file>.
3008         TMPDIR=.
3009     ;;
3010     icl)
3011         cc_default="icl"
3012         ld_default="xilink"
3013         nm_default="dumpbin -symbols"
3014         ar_default="xilib"
3015         target_os_default="win32"
3016         TMPDIR=.
3017     ;;
3018     gcov)
3019         add_cflags  -fprofile-arcs -ftest-coverage
3020         add_ldflags -fprofile-arcs -ftest-coverage
3021     ;;
3022     llvm-cov)
3023         add_cflags -fprofile-arcs -ftest-coverage
3024         add_ldflags --coverage
3025     ;;
3026     hardened)
3027         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3028         add_cflags   -fno-strict-overflow -fstack-protector-all
3029         add_ldflags  -Wl,-z,relro -Wl,-z,now
3030     ;;
3031     ?*)
3032         die "Unknown toolchain $toolchain"
3033     ;;
3034 esac
3035
3036 test -n "$cross_prefix" && enable cross_compile
3037
3038 if enabled cross_compile; then
3039     test -n "$arch" && test -n "$target_os" ||
3040         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3041 fi
3042
3043 ar_default="${cross_prefix}${ar_default}"
3044 cc_default="${cross_prefix}${cc_default}"
3045 objcc_default="${cross_prefix}${objcc_default}"
3046 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3047 nm_default="${cross_prefix}${nm_default}"
3048 pkg_config_default="${cross_prefix}${pkg_config_default}"
3049 ranlib="${cross_prefix}${ranlib}"
3050 strip="${cross_prefix}${strip}"
3051
3052 sysinclude_default="${sysroot}/usr/include"
3053
3054 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3055 enabled cross_compile || host_cc_default=$cc
3056 set_default host_cc
3057
3058 if ! $pkg_config --version >/dev/null 2>&1; then
3059     warn "$pkg_config not found, library detection may fail."
3060     pkg_config=false
3061 fi
3062
3063 exesuf() {
3064     case $1 in
3065         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3066     esac
3067 }
3068
3069 EXESUF=$(exesuf $target_os)
3070 HOSTEXESUF=$(exesuf $host_os)
3071
3072 # set temporary file name
3073 : ${TMPDIR:=$TEMPDIR}
3074 : ${TMPDIR:=$TMP}
3075 : ${TMPDIR:=/tmp}
3076
3077 if ! check_cmd mktemp -u XXXXXX; then
3078     # simple replacement for missing mktemp
3079     # NOT SAFE FOR GENERAL USE
3080     mktemp(){
3081         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3082         echo "$tmpname"
3083         mkdir "$tmpname"
3084     }
3085 fi
3086
3087 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3088     die "Unable to create temporary directory in $TMPDIR."
3089
3090 tmpfile(){
3091     tmp="${AVTMPDIR}/test"$2
3092     (set -C; exec > $tmp) 2> /dev/null ||
3093         die "Unable to create temporary file in $AVTMPDIR."
3094     eval $1=$tmp
3095 }
3096
3097 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3098 trap 'exit 2' INT
3099
3100 tmpfile TMPASM .asm
3101 tmpfile TMPC   .c
3102 tmpfile TMPE   $EXESUF
3103 tmpfile TMPH   .h
3104 tmpfile TMPO   .o
3105 tmpfile TMPS   .S
3106 tmpfile TMPSH  .sh
3107 tmpfile TMPV   .ver
3108
3109 unset -f mktemp
3110
3111 chmod +x $TMPE
3112
3113 # make sure we can execute files in $TMPDIR
3114 cat > $TMPSH 2>> $logfile <<EOF
3115 #! /bin/sh
3116 EOF
3117 chmod +x $TMPSH >> $logfile 2>&1
3118 if ! $TMPSH >> $logfile 2>&1; then
3119     cat <<EOF
3120 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3121 variable to another directory and make sure that it is not mounted noexec.
3122 EOF
3123     die "Sanity test failed."
3124 fi
3125
3126 armasm_flags(){
3127     for flag; do
3128         case $flag in
3129             # Filter out MSVC cl.exe options from cflags that shouldn't
3130             # be passed to gas-preprocessor
3131             -M[TD]*)                                            ;;
3132             *)                  echo $flag                      ;;
3133         esac
3134    done
3135 }
3136
3137 ccc_flags(){
3138     for flag; do
3139         case $flag in
3140             -std=c99)           echo -c99                       ;;
3141             -mcpu=*)            echo -arch ${flag#*=}           ;;
3142             -mieee)             echo -ieee                      ;;
3143             -O*|-fast)          echo $flag                      ;;
3144             -fno-math-errno)    echo -assume nomath_errno       ;;
3145             -g)                 echo -g3                        ;;
3146             -Wall)              echo -msg_enable level2         ;;
3147             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3148             -Wl,*)              echo $flag                      ;;
3149             -f*|-W*)                                            ;;
3150             *)                  echo $flag                      ;;
3151         esac
3152    done
3153 }
3154
3155 cparser_flags(){
3156     for flag; do
3157         case $flag in
3158             -Wno-switch)             echo -Wno-switch-enum ;;
3159             -Wno-format-zero-length) ;;
3160             -Wdisabled-optimization) ;;
3161             -Wno-pointer-sign)       echo -Wno-other ;;
3162             *)                       echo $flag ;;
3163         esac
3164     done
3165 }
3166
3167 msvc_common_flags(){
3168     for flag; do
3169         case $flag in
3170             # In addition to specifying certain flags under the compiler
3171             # specific filters, they must be specified here as well or else the
3172             # generic catch all at the bottom will print the original flag.
3173             -Wall)                ;;
3174             -Wextra)              ;;
3175             -std=c99)             ;;
3176             # Common flags
3177             -fomit-frame-pointer) ;;
3178             -g)                   echo -Z7 ;;
3179             -fno-math-errno)      ;;
3180             -fno-common)          ;;
3181             -fno-signed-zeros)    ;;
3182             -fPIC)                ;;
3183             -mthumb)              ;;
3184             -march=*)             ;;
3185             -lz)                  echo zlib.lib ;;
3186             -lx264)               echo libx264.lib ;;
3187             -l*)                  echo ${flag#-l}.lib ;;
3188             -L*)                  echo -libpath:${flag#-L} ;;
3189             *)                    echo $flag ;;
3190         esac
3191     done
3192 }
3193
3194 msvc_flags(){
3195     msvc_common_flags "$@"
3196     for flag; do
3197         case $flag in
3198             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3199                                        -wd4554 ;;
3200             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3201                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3202                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3203                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3204         esac
3205     done
3206 }
3207
3208 icl_flags(){
3209     msvc_common_flags "$@"
3210     for flag; do
3211         case $flag in
3212             # Despite what Intel's documentation says -Wall, which is supported
3213             # on Windows, does enable remarks so disable them here.
3214             -Wall)                echo $flag -Qdiag-disable:remark ;;
3215             -std=c99)             echo -Qstd=c99 ;;
3216         esac
3217     done
3218 }
3219
3220 pgi_flags(){
3221     for flag; do
3222         case $flag in
3223             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3224             -fomit-frame-pointer) echo -Mnoframe ;;
3225             -g)                   echo -gopt ;;
3226             *)                    echo $flag ;;
3227         esac
3228     done
3229 }
3230
3231 suncc_flags(){
3232     for flag; do
3233         case $flag in
3234             -march=*|-mcpu=*)
3235                 case "${flag#*=}" in
3236                     native)                   echo -xtarget=native       ;;
3237                     v9|niagara)               echo -xarch=sparc          ;;
3238                     ultrasparc)               echo -xarch=sparcvis       ;;
3239                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3240                     i586|pentium)             echo -xchip=pentium        ;;
3241                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3242                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3243                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3244                     pentium4*)          echo -xtarget=pentium4           ;;
3245                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3246                     *-sse3)             echo -xarch=sse3                 ;;
3247                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3248                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3249                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3250                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3251                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3252                     k8|opteron|athlon64|athlon-fx)
3253                                                echo -xarch=sse2a         ;;
3254                     athlon*)                   echo -xarch=pentium_proa  ;;
3255                 esac
3256                 ;;
3257             -std=c99)             echo -xc99              ;;
3258             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3259             -fPIC)                echo -KPIC -xcode=pic32 ;;
3260             -W*,*)                echo $flag              ;;
3261             -f*-*|-W*|-mimpure-text)                      ;;
3262             -shared)              echo -G                 ;;
3263             *)                    echo $flag              ;;
3264         esac
3265     done
3266 }
3267
3268 tms470_flags(){
3269     for flag; do
3270         case $flag in
3271             -march=*|-mcpu=*)
3272                 case "${flag#*=}" in
3273                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3274                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3275                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3276                     armv6*|arm11*)          echo -mv=6   ;;
3277                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3278                                             echo -mv=5e  ;;
3279                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3280                 esac
3281                 ;;
3282             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3283             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3284             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3285             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3286             -msoft-float)   echo --float_support=vfplib       ;;
3287             -O[0-3]|-mf=*)  echo $flag                        ;;
3288             -g)             echo -g -mn                       ;;
3289             -pds=*)         echo $flag                        ;;
3290             -D*|-I*)        echo $flag                        ;;
3291             --gcc|--abi=*)  echo $flag                        ;;
3292             -me)            echo $flag                        ;;
3293         esac
3294     done
3295 }
3296
3297 probe_cc(){
3298     pfx=$1
3299     _cc=$2
3300
3301     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3302     unset _ld_o _ldflags _ld_lib _ld_path
3303     unset _depflags _DEPCMD _DEPFLAGS
3304     _flags_filter=echo
3305
3306     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3307         _type=llvm_gcc
3308         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3309         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3310         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3314         _type=gcc
3315         gcc_version=$($_cc --version | head -n1)
3316         gcc_basever=$($_cc -dumpversion)
3317         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3318         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3319         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3320         if ! $_cc -dumpversion | grep -q '^2\.'; then
3321             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3322         fi
3323         _cflags_speed='-O3'
3324         _cflags_size='-Os'
3325     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3326         _type=icc
3327         _ident=$($_cc --version | head -n1)
3328         _depflags='-MMD'
3329         _cflags_speed='-O3'
3330         _cflags_size='-Os'
3331         _cflags_noopt='-O1'
3332     elif $_cc -v 2>&1 | grep -q xlc; then
3333         _type=xlc
3334         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3335         _cflags_speed='-O5'
3336         _cflags_size='-O5 -qcompact'
3337     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3338         _type=ccc
3339         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3340         _DEPFLAGS='-M'
3341         _cflags_speed='-fast'
3342         _cflags_size='-O1'
3343         _flags_filter=ccc_flags
3344     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3345         test -d "$sysroot" || die "No valid sysroot specified."
3346         _type=armcc
3347         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3348         armcc_conf="$PWD/armcc.conf"
3349         $_cc --arm_linux_configure                 \
3350              --arm_linux_config_file="$armcc_conf" \
3351              --configure_sysroot="$sysroot"        \
3352              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3353              die "Error creating armcc configuration file."
3354         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3355         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3356         as_default="${cross_prefix}gcc"
3357         _depflags='-MMD'
3358         _cflags_speed='-O3'
3359         _cflags_size='-Os'
3360     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3361         _type=tms470
3362         _ident=$($_cc -version | head -n1 | tr -s ' ')
3363         _flags='--gcc --abi=eabi -me'
3364         _cc_e='-ppl -fe=$@'
3365         _cc_o='-fe=$@'
3366         _depflags='-ppa -ppd=$(@:.o=.d)'
3367         _cflags_speed='-O3 -mf=5'
3368         _cflags_size='-O3 -mf=2'
3369         _flags_filter=tms470_flags
3370     elif $_cc -v 2>&1 | grep -q clang; then
3371         _type=clang
3372         _ident=$($_cc --version 2>/dev/null | head -n1)
3373         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3374         _cflags_speed='-O3'
3375         _cflags_size='-Os'
3376     elif $_cc -V 2>&1 | grep -q Sun; then
3377         _type=suncc
3378         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3379         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3380         _DEPFLAGS='-xM1 -xc99'
3381         _ldflags='-std=c99'
3382         _cflags_speed='-O5'
3383         _cflags_size='-O5 -xspace'
3384         _flags_filter=suncc_flags
3385     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3386         _type=pathscale
3387         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3388         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3389         _cflags_speed='-O2'
3390         _cflags_size='-Os'
3391         _flags_filter='filter_out -Wdisabled-optimization'
3392     elif $_cc -v 2>&1 | grep -q Open64; then
3393         _type=open64
3394         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
3399     elif $_cc -V 2>&1 | grep -q Portland; then
3400         _type=pgi
3401         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3402         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3403         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3404         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3405         _cflags_noopt="-O1"
3406         _flags_filter=pgi_flags
3407     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3408         _type=armasm
3409         _ident=$($_cc | head -n1)
3410         # 4509: "This form of conditional instruction is deprecated"
3411         _flags="-nologo -ignore 4509"
3412         _flags_filter=armasm_flags
3413     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3414         _type=msvc
3415         _ident=$($_cc 2>&1 | head -n1)
3416         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3417         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3418         _cflags_speed="-O2"
3419         _cflags_size="-O1"
3420         _cflags_noopt="-O1"
3421         if $_cc -nologo- 2>&1 | grep -q Linker; then
3422             _ld_o='-out:$@'
3423         else
3424             _ld_o='-Fe$@'
3425         fi
3426         _cc_o='-Fo$@'
3427         _cc_e='-P -Fi$@'
3428         _flags_filter=msvc_flags
3429         _ld_lib='lib%.a'
3430         _ld_path='-libpath:'
3431         _flags='-nologo'
3432     elif $_cc 2>&1 | grep -q Intel; then
3433         _type=icl
3434         _ident=$($_cc 2>&1 | head -n1)
3435         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3436         # Not only is O3 broken on 13.x+ but it is slower on all previous
3437         # versions (tested) as well.
3438         _cflags_speed="-O2"
3439         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3440         if $_cc 2>&1 | grep -q Linker; then
3441             _ld_o='-out:$@'
3442         else
3443             _ld_o='-Fe$@'
3444         fi
3445         _cc_o='-Fo$@'
3446         _cc_e='-P'
3447         _flags_filter=icl_flags
3448         _ld_lib='lib%.a'
3449         _ld_path='-libpath:'
3450         # -Qdiag-error to make icl error when seeing certain unknown arguments
3451         _flags='-nologo -Qdiag-error:4044,10157'
3452         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3453         # with MSVC which enables it by default.
3454         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3455     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3456         # lld can emulate multiple different linkers; in ms link.exe mode,
3457         # the -? parameter gives the help output which contains an identifyable
3458         # string, while it gives an error in other modes.
3459         _type=lld-link
3460         # The link.exe mode doesn't have a switch for getting the version,
3461         # but we can force it back to gnu mode and get the version from there.
3462         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3463         _ld_o='-out:$@'
3464         _flags_filter=msvc_flags
3465         _ld_lib='lib%.a'
3466         _ld_path='-libpath:'
3467     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3468         _type=cparser
3469         _ident=$($_cc --version | head -n1)
3470         _depflags='-MMD'
3471         _cflags_speed='-O4'
3472         _cflags_size='-O2'
3473         _flags_filter=cparser_flags
3474     fi
3475
3476     eval ${pfx}_type=\$_type
3477     eval ${pfx}_ident=\$_ident
3478 }
3479
3480 set_ccvars(){
3481     eval ${1}_C=\${_cc_c-\${${1}_C}}
3482     eval ${1}_E=\${_cc_e-\${${1}_E}}
3483     eval ${1}_O=\${_cc_o-\${${1}_O}}
3484
3485     if [ -n "$_depflags" ]; then
3486         eval ${1}_DEPFLAGS=\$_depflags
3487     else
3488         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3489         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3490         eval DEP${1}FLAGS=\$_flags
3491     fi
3492 }
3493
3494 probe_cc cc "$cc"
3495 cflags_filter=$_flags_filter
3496 cflags_speed=$_cflags_speed
3497 cflags_size=$_cflags_size
3498 cflags_noopt=$_cflags_noopt
3499 add_cflags $_flags $_cflags
3500 cc_ldflags=$_ldflags
3501 set_ccvars CC
3502
3503 probe_cc hostcc "$host_cc"
3504 host_cflags_filter=$_flags_filter
3505 host_cflags_speed=$_cflags_speed
3506 add_host_cflags  $_flags $_cflags
3507 set_ccvars HOSTCC
3508
3509 test -n "$cc_type" && enable $cc_type ||
3510     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3511
3512 : ${as_default:=$cc}
3513 : ${objcc_default:=$cc}
3514 : ${dep_cc_default:=$cc}
3515 : ${ld_default:=$cc}
3516 : ${host_ld_default:=$host_cc}
3517 set_default ar as objcc dep_cc ld host_ld
3518
3519 probe_cc as "$as"
3520 asflags_filter=$_flags_filter
3521 add_asflags $_flags $_cflags
3522 set_ccvars AS
3523
3524 probe_cc objcc "$objcc"
3525 objcflags_filter=$_flags_filter
3526 add_objcflags $_flags $_cflags
3527 set_ccvars OBJC
3528
3529 probe_cc ld "$ld"
3530 ldflags_filter=$_flags_filter
3531 add_ldflags $_flags $_ldflags
3532 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3533 LD_O=${_ld_o-$LD_O}
3534 LD_LIB=${_ld_lib-$LD_LIB}
3535 LD_PATH=${_ld_path-$LD_PATH}
3536
3537 probe_cc hostld "$host_ld"
3538 host_ldflags_filter=$_flags_filter
3539 add_host_ldflags $_flags $_ldflags
3540 HOSTLD_O=${_ld_o-$HOSTLD_O}
3541
3542 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3543     probe_cc depcc "$dep_cc"
3544     CCDEP=${_DEPCMD:-$DEPCMD}
3545     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3546     DEPCCFLAGS=$_flags
3547 fi
3548
3549 if $ar 2>&1 | grep -q Microsoft; then
3550     arflags="-nologo"
3551     ar_o='-out:$@'
3552 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3553     arflags="rq"
3554     ar_o='$@'
3555 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3556     arflags='-Xany -r -c'
3557     ar_o='$@'
3558 else
3559     arflags="rc"
3560     ar_o='$@'
3561 fi
3562
3563 add_cflags $extra_cflags
3564 add_objcflags $extra_objcflags
3565 add_asflags $extra_cflags
3566
3567 if test -n "$sysroot"; then
3568     case "$cc_type" in
3569         gcc|llvm_gcc|clang)
3570             add_cppflags --sysroot="$sysroot"
3571             add_ldflags --sysroot="$sysroot"
3572         ;;
3573         tms470)
3574             add_cppflags -I"$sysinclude"
3575             add_ldflags  --sysroot="$sysroot"
3576         ;;
3577     esac
3578 fi
3579
3580 if test "$cpu" = host; then
3581     enabled cross_compile &&
3582         die "--cpu=host makes no sense when cross-compiling."
3583
3584     case "$cc_type" in
3585         gcc|llvm_gcc)
3586             check_native(){
3587                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3588                 sed -n "/cc1.*$1=/{
3589                             s/.*$1=\\([^ ]*\\).*/\\1/
3590                             p
3591                             q
3592                         }" $TMPE
3593             }
3594             cpu=$(check_native -march || check_native -mcpu)
3595         ;;
3596     esac
3597
3598     test "${cpu:-host}" = host &&
3599         die "--cpu=host not supported with compiler $cc"
3600 fi
3601
3602 # Deal with common $arch aliases
3603 case "$arch" in
3604     aarch64|arm64)
3605         arch="aarch64"
3606     ;;
3607     arm*)
3608         arch="arm"
3609     ;;
3610     mips*|IP*)
3611         case "$arch" in
3612         *el)
3613             add_cppflags -EL
3614             add_ldflags -EL
3615         ;;
3616         *eb)
3617             add_cppflags -EB
3618             add_ldflags -EB
3619         ;;
3620         esac
3621         arch="mips"
3622     ;;
3623     parisc*|hppa*)
3624         arch="parisc"
3625     ;;
3626     "Power Macintosh"|ppc*|powerpc*)
3627         arch="ppc"
3628     ;;
3629     s390|s390x)
3630         arch="s390"
3631     ;;
3632     sh4|sh)
3633         arch="sh4"
3634     ;;
3635     sun4u|sparc*)
3636         arch="sparc"
3637     ;;
3638     tilegx|tile-gx)
3639         arch="tilegx"
3640     ;;
3641     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3642         arch="x86"
3643     ;;
3644 esac
3645
3646 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3647 enable $arch
3648
3649 # Add processor-specific flags
3650 if enabled aarch64; then
3651
3652     case $cpu in
3653         armv*)
3654             cpuflags="-march=$cpu"
3655         ;;
3656         *)
3657             cpuflags="-mcpu=$cpu"
3658         ;;
3659     esac
3660
3661 elif enabled alpha; then
3662
3663     cpuflags="-mcpu=$cpu"
3664
3665 elif enabled arm; then
3666
3667     check_arm_arch() {
3668         check_cpp_condition stddef.h \
3669             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3670             $cpuflags
3671     }
3672
3673     probe_arm_arch() {
3674         if   check_arm_arch 4;        then echo armv4
3675         elif check_arm_arch 4T;       then echo armv4t
3676         elif check_arm_arch 5;        then echo armv5
3677         elif check_arm_arch 5E;       then echo armv5e
3678         elif check_arm_arch 5T;       then echo armv5t
3679         elif check_arm_arch 5TE;      then echo armv5te
3680         elif check_arm_arch 5TEJ;     then echo armv5te
3681         elif check_arm_arch 6;        then echo armv6
3682         elif check_arm_arch 6J;       then echo armv6j
3683         elif check_arm_arch 6K;       then echo armv6k
3684         elif check_arm_arch 6Z;       then echo armv6z
3685         elif check_arm_arch 6ZK;      then echo armv6zk
3686         elif check_arm_arch 6T2;      then echo armv6t2
3687         elif check_arm_arch 7;        then echo armv7
3688         elif check_arm_arch 7A  7_A;  then echo armv7-a
3689         elif check_arm_arch 7S;       then echo armv7-a
3690         elif check_arm_arch 7R  7_R;  then echo armv7-r
3691         elif check_arm_arch 7M  7_M;  then echo armv7-m
3692         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3693         elif check_arm_arch 8A  8_A;  then echo armv8-a
3694         fi
3695     }
3696
3697     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3698
3699     case $cpu in
3700         armv*)
3701             cpuflags="-march=$cpu"
3702             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3703         ;;
3704         *)
3705             cpuflags="-mcpu=$cpu"
3706             case $cpu in
3707                 cortex-a*)                               subarch=armv7a  ;;
3708                 cortex-r*)                               subarch=armv7r  ;;
3709                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3710                 arm11*)                                  subarch=armv6   ;;
3711                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3712                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3713                 *)                             subarch=$(probe_arm_arch) ;;
3714             esac
3715         ;;
3716     esac
3717
3718     case "$subarch" in
3719         armv5t*)    enable fast_clz                ;;
3720         armv[6-8]*) enable fast_clz fast_unaligned ;;
3721     esac
3722
3723 elif enabled avr32; then
3724
3725     case $cpu in
3726         ap7[02]0[0-2])
3727             subarch="avr32_ap"
3728             cpuflags="-mpart=$cpu"
3729         ;;
3730         ap)
3731             subarch="avr32_ap"
3732             cpuflags="-march=$cpu"
3733         ;;
3734         uc3[ab]*)
3735             subarch="avr32_uc"
3736             cpuflags="-mcpu=$cpu"
3737         ;;
3738         uc)
3739             subarch="avr32_uc"
3740             cpuflags="-march=$cpu"
3741         ;;
3742     esac
3743
3744 elif enabled bfin; then
3745
3746     cpuflags="-mcpu=$cpu"
3747
3748 elif enabled mips; then
3749
3750     cpuflags="-march=$cpu"
3751
3752 elif enabled ppc; then
3753
3754     disable ldbrx
3755
3756     case $(tolower $cpu) in
3757         601|ppc601|powerpc601)
3758             cpuflags="-mcpu=601"
3759             disable altivec
3760         ;;
3761         603*|ppc603*|powerpc603*)
3762             cpuflags="-mcpu=603"
3763             disable altivec
3764         ;;
3765         604*|ppc604*|powerpc604*)
3766             cpuflags="-mcpu=604"
3767             disable altivec
3768         ;;
3769         g3|75*|ppc75*|powerpc75*)
3770             cpuflags="-mcpu=750"
3771             disable altivec
3772         ;;
3773         g4|745*|ppc745*|powerpc745*)
3774             cpuflags="-mcpu=7450"
3775             disable vsx
3776         ;;
3777         74*|ppc74*|powerpc74*)
3778             cpuflags="-mcpu=7400"
3779             disable vsx
3780         ;;
3781         g5|970|ppc970|powerpc970)
3782             cpuflags="-mcpu=970"
3783             disable vsx
3784         ;;
3785         power[3-6]*)
3786             cpuflags="-mcpu=$cpu"
3787             disable vsx
3788         ;;
3789         power[7-8]*)
3790             cpuflags="-mcpu=$cpu"
3791             enable ldbrx
3792         ;;
3793         cell)
3794             cpuflags="-mcpu=cell"
3795             enable ldbrx
3796             disable vsx
3797         ;;
3798         e500mc)
3799             cpuflags="-mcpu=e500mc"
3800             disable altivec
3801         ;;
3802         e500v2)
3803             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3804             disable altivec
3805             disable dcbzl
3806         ;;
3807         e500)
3808             cpuflags="-mcpu=8540 -mhard-float"
3809             disable altivec
3810             disable dcbzl
3811         ;;
3812     esac
3813
3814 elif enabled sparc; then
3815
3816     case $cpu in
3817         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3818             cpuflags="-mcpu=$cpu"
3819         ;;
3820         ultrasparc*|niagara[234])
3821             cpuflags="-mcpu=$cpu"
3822         ;;
3823     esac
3824
3825 elif enabled x86; then
3826
3827     case $cpu in
3828         i[345]86|pentium)
3829             cpuflags="-march=$cpu"
3830             disable i686
3831             disable mmx
3832         ;;
3833         # targets that do NOT support nopl and conditional mov (cmov)
3834         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3835             cpuflags="-march=$cpu"
3836             disable i686
3837         ;;
3838         # targets that do support nopl and conditional mov (cmov)
3839         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3840             cpuflags="-march=$cpu"
3841             enable i686
3842             enable fast_cmov
3843         ;;
3844         # targets that do support conditional mov but on which it's slow
3845         pentium4|pentium4m|prescott|nocona)
3846             cpuflags="-march=$cpu"
3847             enable i686
3848             disable fast_cmov
3849         ;;
3850     esac
3851
3852 fi
3853
3854 if [ "$cpu" != generic ]; then
3855     add_cflags  $cpuflags
3856     add_asflags $cpuflags
3857     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3858 fi
3859
3860 # compiler sanity check
3861 check_exec <<EOF
3862 int main(void){ return 0; }
3863 EOF
3864 if test "$?" != 0; then
3865     echo "$cc is unable to create an executable file."
3866     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3867         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3868         echo "Only do this if you know what cross compiling means."
3869     fi
3870     die "C compiler test failed."
3871 fi
3872
3873 add_cppflags -D_ISOC99_SOURCE
3874
3875 # some compilers silently accept -std=c11, so we also need to check that the
3876 # version macro is defined properly
3877 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3878     add_cflags -std=c11 ||
3879     check_cflags -std=c99
3880
3881 check_cppflags -D_FILE_OFFSET_BITS=64
3882 check_cppflags -D_LARGEFILE_SOURCE
3883
3884 add_host_cppflags -D_ISOC99_SOURCE
3885 check_host_cflags -std=c99
3886 check_host_cflags -Wall
3887 check_host_cflags $host_cflags_speed
3888
3889 check_64bit(){
3890     arch32=$1
3891     arch64=$2
3892     expr=$3
3893     check_code cc "" "int test[2*($expr) - 1]" &&
3894         subarch=$arch64 || subarch=$arch32
3895 }
3896
3897 case "$arch" in
3898     aarch64|alpha|ia64)
3899         spic=$shared
3900     ;;
3901     mips)
3902         check_64bit mips mips64 '_MIPS_SIM > 1'
3903         spic=$shared
3904     ;;
3905     parisc)
3906         check_64bit parisc parisc64 'sizeof(void *) > 4'
3907         spic=$shared
3908     ;;
3909     ppc)
3910         check_64bit ppc ppc64 'sizeof(void *) > 4'
3911         spic=$shared
3912     ;;
3913     s390)
3914         check_64bit s390 s390x 'sizeof(void *) > 4'
3915         spic=$shared
3916     ;;
3917     sparc)
3918         check_64bit sparc sparc64 'sizeof(void *) > 4'
3919         spic=$shared
3920     ;;
3921     x86)
3922         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3923         if test "$subarch" = "x86_64"; then
3924             spic=$shared
3925         fi
3926     ;;
3927 esac
3928
3929 enable $subarch
3930 enabled spic && enable_weak pic
3931
3932 enabled x86_64 && objformat=elf64 || objformat="elf32"
3933
3934 # OS specific
3935 case $target_os in
3936     aix)
3937         SHFLAGS=-shared
3938         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3939         enabled shared && add_ldflags -Wl,-brtl
3940         ;;
3941     android)
3942         disable symver
3943         enable section_data_rel_ro
3944         SLIB_INSTALL_NAME='$(SLIBNAME)'
3945         SLIB_INSTALL_LINKS=
3946         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3947         ;;
3948     haiku)
3949         prefix_default="/boot/common"
3950         network_extralibs="-lnetwork"
3951         host_extralibs=
3952         ;;
3953     sunos)
3954         SHFLAGS='-shared -Wl,-h,$$(@F)'
3955         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3956         network_extralibs="-lsocket -lnsl"
3957         # When using suncc to build, the Solaris linker will mark
3958         # an executable with each instruction set encountered by
3959         # the Solaris assembler.  As our libraries contain their own
3960         # guards for processor-specific code, instead suppress
3961         # generation of the HWCAPS ELF section on Solaris x86 only.
3962         enabled_all suncc x86 &&
3963             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3964             add_ldflags -Wl,-M,mapfile
3965         nm_default='nm -P -g'
3966         version_script='-M'
3967         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3968         ;;
3969     netbsd)
3970         disable symver
3971         oss_indev_extralibs="-lossaudio"
3972         oss_outdev_extralibs="-lossaudio"
3973         ;;
3974     openbsd|bitrig)
3975         disable symver
3976         SHFLAGS='-shared'
3977         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3978         SLIB_INSTALL_LINKS=
3979         oss_indev_extralibs="-lossaudio"
3980         oss_outdev_extralibs="-lossaudio"
3981         ;;
3982     dragonfly)
3983         disable symver
3984         ;;
3985     freebsd)
3986         ;;
3987     bsd/os)
3988         add_extralibs -lpoll -lgnugetopt
3989         ;;
3990     darwin)
3991         enabled ppc && add_asflags -force_cpusubtype_ALL
3992         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3993         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3994         add_ldflags -Wl,-dynamic,-search_paths_first
3995         check_cflags -Werror=partial-availability
3996         SLIBSUF=".dylib"
3997         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3998         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3999         enabled x86_64 && objformat="macho64" || objformat="macho32"
4000         enabled_any pic shared ||
4001             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4002         check_header dispatch/dispatch.h &&
4003             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4004         if test -n "$sysroot"; then
4005             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4006             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4007         fi
4008         ;;
4009     msys*)
4010         die "Native MSYS builds are discouraged, please use the MINGW environment."
4011         ;;
4012     mingw32*|mingw64*)
4013         if test $target_os = "mingw32ce"; then
4014             disable network
4015         else
4016             target_os=mingw32
4017         fi
4018         LIBTARGET=i386
4019         if enabled x86_64; then
4020             LIBTARGET="i386:x86-64"
4021         elif enabled arm; then
4022             LIBTARGET=arm-wince
4023         fi
4024         check_ldflags -Wl,--nxcompat
4025         check_ldflags -Wl,--dynamicbase
4026         shlibdir_default="$bindir_default"
4027         SLIBPREF=""
4028         SLIBSUF=".dll"
4029         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4030         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4031         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4032         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4033         SLIB_INSTALL_LINKS=
4034         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4035         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4036         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4037         enabled x86_64 && objformat="win64" || objformat="win32"
4038         dlltool="${cross_prefix}dlltool"
4039         ranlib=:
4040         enable dos_paths
4041         ;;
4042     win32|win64)
4043         disable symver
4044         if enabled shared; then
4045             # Link to the import library instead of the normal static library
4046             # for shared libs.
4047             LD_LIB='%.lib'
4048             # Cannot build both shared and static libs with MSVC or icl.
4049             disable static
4050         fi
4051         shlibdir_default="$bindir_default"
4052         SLIBPREF=""
4053         SLIBSUF=".dll"
4054         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4055         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4056         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4057         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4058         SLIB_INSTALL_LINKS=
4059         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4060         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4061         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4062         enabled x86_64 && objformat="win64" || objformat="win32"
4063         ranlib=:
4064         enable dos_paths
4065         ;;
4066     cygwin*)
4067         target_os=cygwin
4068         shlibdir_default="$bindir_default"
4069         SLIBPREF="cyg"
4070         SLIBSUF=".dll"
4071         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4072         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4073         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4074         SLIB_INSTALL_LINKS=
4075         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4076         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4077         enabled x86_64 && objformat="win64" || objformat="win32"
4078         enable dos_paths
4079         ;;
4080     *-dos|freedos|opendos)
4081         network_extralibs="-lsocket"
4082         objformat="coff"
4083         enable dos_paths
4084         add_cppflags -U__STRICT_ANSI__
4085         ;;
4086     linux)
4087         enable dv1394
4088         enable section_data_rel_ro
4089         ;;
4090     irix*)
4091         target_os=irix
4092         ranlib="echo ignoring ranlib"
4093         ;;
4094     os/2*)
4095         ln_s="cp -f"
4096         objformat="aout"
4097         add_cppflags -D_GNU_SOURCE
4098         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4099         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4100         LIBSUF="_s.a"
4101         SLIBPREF=""
4102         SLIBSUF=".dll"
4103         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4104         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4105         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4106             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4107             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4108             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4109             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4110         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4111             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4112         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4113         enable dos_paths
4114         ;;
4115     gnu/kfreebsd)
4116         add_cppflags -D_BSD_SOURCE
4117         ;;
4118     gnu)
4119         ;;
4120     qnx)
4121         add_cppflags -D_QNX_SOURCE
4122         network_extralibs="-lsocket"
4123         ;;
4124     symbian)
4125         SLIBSUF=".dll"
4126         enable dos_paths
4127         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4128         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4129         add_ldflags -Wl,--target1-abs,--no-undefined \
4130                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4131                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4132         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4133                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4134                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4135         ;;
4136     osf1)
4137         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4138         ;;
4139     minix)
4140         ;;
4141     none)
4142         ;;
4143     *)
4144         die "Unknown OS '$target_os'."
4145         ;;
4146 esac
4147
4148 # determine libc flavour
4149
4150 probe_libc(){
4151     pfx=$1
4152     pfx_no_=${pfx%_}
4153     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4154     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4155         eval ${pfx}libc_type=uclibc
4156         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4157     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4158         eval ${pfx}libc_type=glibc
4159         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4160     # MinGW headers can be installed on Cygwin, so check for newlib first.
4161     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4162         eval ${pfx}libc_type=newlib
4163         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4164     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4165     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4166         eval ${pfx}libc_type=mingw64
4167         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4168         eval test \$${pfx_no_}cc_type = "gcc" &&
4169             add_${pfx}cppflags -D__printf__=__gnu_printf__
4170     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4171          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4172         eval ${pfx}libc_type=mingw32
4173         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4174             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4175             die "ERROR: MinGW32 runtime version must be >= 3.15."
4176         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4177         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4178             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4179         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4180             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4181         eval test \$${pfx_no_}cc_type = "gcc" &&
4182             add_${pfx}cppflags -D__printf__=__gnu_printf__
4183     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4184         eval ${pfx}libc_type=msvcrt
4185         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4186             if [ "$pfx" = host_ ]; then
4187                 add_host_cppflags -Dsnprintf=_snprintf
4188             else
4189                 add_compat strtod.o strtod=avpriv_strtod
4190                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4191                                              _snprintf=avpriv_snprintf  \
4192                                              vsnprintf=avpriv_vsnprintf
4193             fi
4194         fi
4195         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4196         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4197         # 0x601 by default unless something else is set by the user.
4198         # This can easily lead to us detecting functions only present
4199         # in such new versions and producing binaries requiring windows 7.0.
4200         # Therefore explicitly set the default to XP unless the user has
4201         # set something else on the command line.
4202         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4203         # family. For these cases, configure is free to use any functions
4204         # found in the SDK headers by default. (Alternatively, we could force
4205         # _WIN32_WINNT to 0x0602 in that case.)
4206         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4207             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4208 #ifdef WINAPI_FAMILY
4209 #include <winapifamily.h>
4210 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4211 #error not desktop
4212 #endif
4213 #endif
4214 EOF
4215         if [ "$pfx" = "" ]; then
4216             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4217         fi
4218     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4219         eval ${pfx}libc_type=klibc
4220     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4221         eval ${pfx}libc_type=bionic
4222     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4223         eval ${pfx}libc_type=solaris
4224         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4225     else
4226         eval ${pfx}libc_type=default
4227         add_${pfx}cppflags -D_DEFAULT_SOURCE
4228     fi
4229 }
4230
4231 probe_libc
4232 test -n "$libc_type" && enable libc_$libc_type
4233 probe_libc host_
4234 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4235
4236 # hacks for compiler/libc/os combinations
4237
4238 case $libc_type in
4239     bionic)
4240         add_compat strtod.o strtod=avpriv_strtod
4241         ;;
4242     glibc)
4243         if enabled tms470; then
4244             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4245             add_cppflags -D__USER_LABEL_PREFIX__=
4246             add_cppflags -D__builtin_memset=memset
4247             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4248             add_cflags   -pds=48    # incompatible redefinition of macro
4249         elif enabled ccc; then
4250             add_ldflags -Wl,-z,now  # calls to libots crash without this
4251         fi
4252         ;;
4253 esac
4254
4255 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4256     add_cppflags '-I\$(SRC_PATH)/compat/float'
4257
4258 esc(){
4259     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4260 }
4261
4262 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4263
4264 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4265
4266 set_default $PATHS_LIST
4267 set_default nm
4268
4269 # we need to build at least one lib type
4270 if ! enabled_any static shared; then
4271     cat <<EOF
4272 At least one library type must be built.
4273 Specify --enable-static to build the static libraries or --enable-shared to
4274 build the shared libraries as well. To only build the shared libraries specify
4275 --disable-static in addition to --enable-shared.
4276 EOF
4277     exit 1
4278 fi
4279
4280 disabled optimizations || check_cflags -fomit-frame-pointer
4281
4282 enable_weak_pic() {
4283     disabled pic && return
4284     enable pic
4285     add_cppflags -DPIC
4286     case "$target_os" in
4287     mingw*|cygwin*)
4288         ;;
4289     *)
4290         add_cflags -fPIC
4291         ;;
4292     esac
4293     add_asflags  -fPIC
4294 }
4295
4296 enabled pic && enable_weak_pic
4297
4298 check_cc <<EOF || die "Symbol mangling check failed."
4299 int ff_extern;
4300 EOF
4301 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4302 extern_prefix=${sym%%ff_extern*}
4303
4304 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4305
4306 _restrict=
4307 for restrict_keyword in restrict __restrict__ __restrict; do
4308     check_cc <<EOF && _restrict=$restrict_keyword && break
4309 void foo(char * $restrict_keyword p);
4310 EOF
4311 done
4312
4313 check_cc <<EOF && enable pragma_deprecated
4314 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4315 EOF
4316
4317 check_cc <<EOF && enable attribute_packed
4318 struct { int x; } __attribute__((packed)) x;
4319 EOF
4320
4321 check_cc <<EOF && enable attribute_may_alias
4322 union { int x; } __attribute__((may_alias)) x;
4323 EOF
4324
4325 check_cc <<EOF || die "endian test failed"
4326 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4327 EOF
4328 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4329
4330 check_gas() {
4331     log "check_gas using '$as' as AS"
4332     # :vararg is used on aarch64, arm and ppc altivec
4333     check_as <<EOF || return 1
4334 .macro m n, y:vararg=0
4335 \n: .int \y
4336 .endm
4337 m x
4338 EOF
4339     # .altmacro is only used in arm asm
4340     ! enabled arm || check_as <<EOF || return 1
4341 .altmacro
4342 EOF
4343     enable gnu_as
4344     return 0
4345 }
4346
4347 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4348     nogas=:
4349     enabled_any arm aarch64 && nogas=die
4350     enabled_all ppc altivec && nogas=warn
4351     as_noop=-v
4352
4353     case $as_type in
4354         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4355         gcc)  gaspp_as_type=gas ;;
4356         *)    gaspp_as_type=$as_type ;;
4357     esac
4358
4359     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4360
4361     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4362         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4363
4364     if ! check_gas ; then
4365         as=${gas:=$as}
4366         check_gas || \
4367             $nogas "GNU assembler not found, install/update gas-preprocessor"
4368     fi
4369
4370     check_as <<EOF && enable as_func
4371 .func test
4372 .endfunc
4373 EOF
4374 fi
4375
4376 check_inline_asm inline_asm_labels '"1:\n"'
4377
4378 if enabled aarch64; then
4379     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4380     # internal assembler in clang 3.3 does not support this instruction
4381     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4382     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4383
4384     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4385
4386 elif enabled alpha; then
4387
4388     check_cflags -mieee
4389
4390 elif enabled arm; then
4391
4392     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4393     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4394     enabled thumb && check_cflags -mthumb || check_cflags -marm
4395
4396     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4397         enable vfp_args
4398     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4399         enable vfp_args
4400     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4401         case "${cross_prefix:-$cc}" in
4402             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4403             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4404 __asm__ (".eabi_attribute 28, 1");
4405 int main(void) { return 0; }
4406 EOF
4407         esac
4408         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4409     fi
4410
4411     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4412     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4413     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4414     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4415     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4416     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4417
4418     [ $target_os = linux ] || [ $target_os = android ] ||
4419         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4420             $ARCH_EXT_LIST_ARM
4421
4422     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4423
4424     check_as <<EOF && enable as_arch_directive
4425 .arch armv7-a
4426 EOF
4427     check_as <<EOF && enable as_fpu_directive
4428 .fpu neon
4429 EOF
4430
4431     # llvm's integrated assembler supports .object_arch from llvm 3.5
4432     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4433         check_as <<EOF && enable as_object_arch
4434 .object_arch armv4
4435 EOF
4436
4437     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4438
4439 elif enabled mips; then
4440
4441     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4442
4443     # make sure that only an instruction set is enabled
4444     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4445
4446     if enabled mips64; then
4447         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4448             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4449                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4450     else
4451         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4452             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4453                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4454     fi
4455
4456 elif enabled parisc; then
4457
4458     if enabled gcc; then
4459         case $($cc -dumpversion) in
4460             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4461         esac
4462     fi
4463
4464 elif enabled ppc; then
4465
4466     enable local_aligned_8 local_aligned_16 local_aligned_32
4467
4468     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4469     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4470     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4471     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4472
4473     if enabled altivec; then
4474         check_cflags -maltivec -mabi=altivec
4475
4476         # check if our compiler supports Motorola AltiVec C API
4477         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4478                                  vector signed int v2 = (vector signed int) { 1 };
4479                                  v1 = vec_add(v1, v2);" ||
4480             disable altivec
4481
4482         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4483     fi
4484
4485     if enabled vsx; then
4486         check_cflags -mvsx &&
4487         check_code cc altivec.h "int v[4] = { 0 };
4488                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4489             disable vsx
4490     fi
4491
4492     if enabled power8; then
4493         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4494     fi
4495
4496 elif enabled x86; then
4497
4498     check_builtin rdtsc    intrin.h   "__rdtsc()"
4499     check_builtin mm_empty mmintrin.h "_mm_empty()"
4500
4501     enable local_aligned_8 local_aligned_16 local_aligned_32
4502
4503     # check whether EBP is available on x86
4504     # As 'i' is stored on the stack, this program will crash
4505     # if the base pointer is used to access it because the
4506     # base pointer is cleared in the inline assembly code.
4507     check_exec_crash <<EOF && enable ebp_available
4508 volatile int i=0;
4509 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4510 return i;
4511 EOF
4512
4513     # check whether EBX is available on x86
4514     check_inline_asm ebx_available '""::"b"(0)' &&
4515         check_inline_asm ebx_available '"":::"%ebx"'
4516
4517     # check whether xmm clobbers are supported
4518     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4519
4520     # check whether binutils is new enough to compile SSSE3/MMXEXT
4521     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4522     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4523
4524     probe_x86asm(){
4525         x86asmexe_probe=$1
4526         if check_cmd $x86asmexe_probe -v; then
4527             x86asmexe=$x86asmexe_probe
4528             x86asm_type=nasm
4529             x86asm_debug="-g -F dwarf"
4530             X86ASMDEP=
4531             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4532         elif check_cmd $x86asmexe_probe --version; then
4533             x86asmexe=$x86asmexe_probe
4534             x86asm_type=yasm
4535             x86asm_debug="-g dwarf2"
4536             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4537             X86ASM_DEPFLAGS=
4538         fi
4539         check_x86asm "movbe ecx, [5]" && enable x86asm
4540     }
4541
4542     if ! disabled_any asm mmx x86asm; then
4543         disable x86asm
4544         for program in $x86asmexe nasm yasm; do
4545             probe_x86asm $program && break
4546         done
4547         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4548         X86ASMFLAGS="-f $objformat"
4549         enabled pic               && append X86ASMFLAGS "-DPIC"
4550         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4551         case "$objformat" in
4552             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4553         esac
4554
4555         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4556         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4557         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4558         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4559         check_x86asm "CPU amdnop"                      || disable cpunop
4560     fi
4561
4562     case "$cpu" in
4563         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4564             disable fast_clz
4565         ;;
4566     esac
4567
4568 fi
4569
4570 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4571
4572 check_ldflags -Wl,--as-needed
4573
4574 if ! disabled network; then
4575     check_func getaddrinfo $network_extralibs
4576     check_func inet_aton $network_extralibs
4577
4578     check_type netdb.h "struct addrinfo"
4579     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4580     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4581     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4582     check_type poll.h "struct pollfd"
4583     check_type netinet/sctp.h "struct sctp_event_subscribe"
4584     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4585     check_type netinet/in.h "struct sockaddr_in6"
4586     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4587     check_type "sys/types.h sys/socket.h" socklen_t
4588
4589     # Prefer arpa/inet.h over winsock2
4590     if check_header arpa/inet.h ; then
4591         check_func closesocket
4592     elif check_header winsock2.h ; then
4593         check_func_headers winsock2.h closesocket -lws2 &&
4594             network_extralibs="-lws2" ||
4595         { check_func_headers winsock2.h closesocket -lws2_32 &&
4596             network_extralibs="-lws2_32"; } || disable winsock2_h network
4597         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4598
4599         check_type ws2tcpip.h socklen_t
4600         check_type ws2tcpip.h "struct addrinfo"
4601         check_type ws2tcpip.h "struct group_source_req"
4602         check_type ws2tcpip.h "struct ip_mreq_source"
4603         check_type ws2tcpip.h "struct ipv6_mreq"
4604         check_type winsock2.h "struct pollfd"
4605         check_struct winsock2.h "struct sockaddr" sa_len
4606         check_type ws2tcpip.h "struct sockaddr_in6"
4607         check_type ws2tcpip.h "struct sockaddr_storage"
4608     else
4609         disable network
4610     fi
4611 fi
4612
4613 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4614 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4615 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4616 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4617
4618 case "$custom_allocator" in
4619     jemalloc)
4620         # jemalloc by default does not use a prefix
4621         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4622     ;;
4623     tcmalloc)
4624         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4625         malloc_prefix=tc_
4626     ;;
4627 esac
4628
4629 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4630 check_func  ${malloc_prefix}memalign            && enable memalign
4631 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4632
4633 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4634     { check_lib clock_gettime time.h clock_gettime ||
4635       check_lib clock_gettime time.h clock_gettime -lrt; }
4636
4637 check_func  fcntl
4638 check_func  fork
4639 check_func  gethrtime
4640 check_func  getopt
4641 check_func  getrusage
4642 check_func  gettimeofday
4643 check_func  gmtime_r
4644 check_func  isatty
4645 check_func  localtime_r
4646 check_func  mach_absolute_time
4647 check_func  mkstemp
4648 check_func  mmap
4649 check_func  mprotect
4650 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4651 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4652 check_func  sched_getaffinity
4653 check_func  setrlimit
4654 check_func  strerror_r
4655 check_func  sysconf
4656 check_func  sysctl
4657 check_func  usleep
4658
4659 check_func_headers io.h setmode
4660 check_func_headers stdlib.h getenv
4661
4662 check_func_headers windows.h GetProcessAffinityMask
4663 check_func_headers windows.h GetProcessTimes
4664 check_func_headers windows.h GetSystemTimeAsFileTime
4665 check_func_headers windows.h LoadLibrary
4666 check_func_headers windows.h MapViewOfFile
4667 check_func_headers windows.h SetConsoleTextAttribute
4668 check_func_headers windows.h Sleep
4669 check_func_headers windows.h VirtualAlloc
4670 check_struct windows.h "CONDITION_VARIABLE" Ptr
4671
4672 check_header d3d11.h
4673 check_header direct.h
4674 check_header dlfcn.h
4675 check_header dxgidebug.h
4676 check_header dxva.h
4677 check_header dxva2api.h
4678 check_header io.h
4679 check_header mach/mach_time.h
4680 check_header malloc.h
4681 check_header poll.h
4682 check_header sys/mman.h
4683 check_header sys/param.h
4684 check_header sys/resource.h
4685 check_header sys/select.h
4686 check_header sys/time.h
4687 check_header sys/un.h
4688 check_header unistd.h
4689 check_header valgrind/valgrind.h
4690 check_header VideoDecodeAcceleration/VDADecoder.h
4691 check_header windows.h
4692
4693 # it seems there are versions of clang in some distros that try to use the
4694 # gcc headers, which explodes for stdatomic
4695 # so we also check that atomics actually work here
4696 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4697
4698 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4699 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4700 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4701 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4702
4703 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4704
4705 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4706 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4707 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4708
4709 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4710 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4711 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4712
4713 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4714 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4715 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4716 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4717 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4718 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4719 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4720 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4721 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4722
4723 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4724
4725 if ! disabled w32threads && ! enabled pthreads; then
4726     check_lib w32threads "windows.h process.h" _beginthreadex
4727 fi
4728
4729 # check for some common methods of building with pthread support
4730 # do this before the optional library checks as some of them require pthreads
4731 if ! disabled pthreads && ! enabled w32threads; then
4732     if check_lib pthreads pthread.h pthread_join -pthread; then
4733         add_cflags -pthread
4734     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4735         add_cflags -pthreads
4736     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4737         :
4738     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4739         :
4740     elif check_func pthread_join; then
4741         enable pthreads
4742     fi
4743 fi
4744
4745 enabled pthreads &&
4746     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4747
4748 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4749 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4750
4751 # On some systems dynamic loading requires no extra linker flags
4752 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4753
4754 check_lib libm math.h sin -lm
4755
4756 atan2f_args=2
4757 ldexpf_args=2
4758 powf_args=2
4759
4760 for func in $MATH_FUNCS; do
4761     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4762 done
4763
4764 # these are off by default, so fail if requested and not available
4765 enabled avisynth          && require_header avisynth/avisynth_c.h
4766 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4767 enabled cuda              && require cuda cuda.h cuInit -lcuda
4768 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4769 enabled frei0r            && require_header frei0r.h
4770 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4771 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4772 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4773 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4774 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4775 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4776 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4777 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4778 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4779                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4780                                done || die "ERROR: libgsm not found"; }
4781 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4782 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4783 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4784 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4785 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4786 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4787 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4788 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4789 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4790 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4791 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4792                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4793 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4794 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4795 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4796 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4797 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4798 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4799 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4800 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4801 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4802 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4803 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4804 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4805                              { enabled libvpx_vp8_decoder &&
4806                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4807                                enabled libvpx_vp8_encoder &&
4808                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4809                                enabled libvpx_vp9_decoder &&
4810                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4811                                enabled libvpx_vp9_encoder &&
4812                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4813                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4814                                    die "libvpx enabled but no supported decoders/encoders found"
4815                              }
4816 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4817 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4818 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4819