build: Drop explicit check for dlfcn.h
[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 ${name}_extralibs="\$@"
1026 }
1027
1028 test_pkg_config(){
1029     log test_pkg_config "$@"
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 $name &&
1042         set_sanitized "${name}_cflags"    $pkg_cflags &&
1043         set_sanitized "${name}_extralibs" $pkg_libs
1044 }
1045
1046 check_pkg_config(){
1047     log check_pkg_config "$@"
1048     name="$1"
1049     test_pkg_config "$@" &&
1050         eval add_cflags \$${name}_cflags
1051 }
1052
1053 check_exec(){
1054     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1055 }
1056
1057 check_exec_crash(){
1058     log check_exec_crash "$@"
1059     code=$(cat)
1060
1061     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1062     # are safe but may not be available everywhere.  Thus we use
1063     # raise(SIGTERM) instead.  The check is run in a subshell so we
1064     # can redirect the "Terminated" message from the shell.  SIGBUS
1065     # is not defined by standard C so it is used conditionally.
1066
1067     (check_exec "$@") >> $logfile 2>&1 <<EOF
1068 #include <signal.h>
1069 static void sighandler(int sig){
1070     raise(SIGTERM);
1071 }
1072 int foo(void){
1073     $code
1074 }
1075 int (*func_ptr)(void) = foo;
1076 int main(void){
1077     signal(SIGILL, sighandler);
1078     signal(SIGFPE, sighandler);
1079     signal(SIGSEGV, sighandler);
1080 #ifdef SIGBUS
1081     signal(SIGBUS, sighandler);
1082 #endif
1083     return func_ptr();
1084 }
1085 EOF
1086 }
1087
1088 check_type(){
1089     log check_type "$@"
1090     headers=$1
1091     type=$2
1092     shift 2
1093     disable_sanitized "$type"
1094     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1095 }
1096
1097 check_struct(){
1098     log check_struct "$@"
1099     headers=$1
1100     struct=$2
1101     member=$3
1102     shift 3
1103     disable_sanitized "${struct}_${member}"
1104     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1105         enable_sanitized "${struct}_${member}"
1106 }
1107
1108 check_builtin(){
1109     log check_builtin "$@"
1110     name=$1
1111     headers=$2
1112     builtin=$3
1113     shift 3
1114     disable "$name"
1115     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1116 }
1117
1118 check_compile_assert(){
1119     log check_compile_assert "$@"
1120     name=$1
1121     headers=$2
1122     condition=$3
1123     shift 3
1124     disable "$name"
1125     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1126 }
1127
1128 require(){
1129     log require "$@"
1130     name_version="$1"
1131     name="${1%% *}"
1132     headers="$2"
1133     func="$3"
1134     shift 3
1135     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1136 }
1137
1138 require_header(){
1139     log require "$@"
1140     header="$1"
1141     shift
1142     check_header "$header" "$@" || die "ERROR: $header not found"
1143 }
1144
1145 require_cpp_condition(){
1146     log require "$@"
1147     header="$1"
1148     condition="$2"
1149     shift 2
1150     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1151 }
1152
1153 require_pkg_config(){
1154     log require_pkg_config "$@"
1155     pkg_version="$2"
1156     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1157 }
1158
1159 hostcc_e(){
1160     eval printf '%s\\n' $HOSTCC_E
1161 }
1162
1163 hostcc_o(){
1164     eval printf '%s\\n' $HOSTCC_O
1165 }
1166
1167 check_host_cc(){
1168     log check_host_cc "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1172 }
1173
1174 check_host_cpp(){
1175     log check_host_cpp "$@"
1176     cat > $TMPC
1177     log_file $TMPC
1178     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1179 }
1180
1181 check_host_cppflags(){
1182     log check_host_cppflags "$@"
1183     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1184 #include <stdlib.h>;
1185 EOF
1186 }
1187
1188 check_host_cflags(){
1189     log check_host_cflags "$@"
1190     set -- $($host_cflags_filter "$@")
1191     check_host_cc "$@" <<EOF && append host_cflags "$@"
1192 int x;
1193 EOF
1194 }
1195
1196 check_host_cpp_condition(){
1197     log check_host_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_host_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 apply(){
1210     file=$1
1211     shift
1212     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1213 }
1214
1215 cp_if_changed(){
1216     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1217     mkdir -p "$(dirname $2)"
1218     cp -f "$1" "$2"
1219 }
1220
1221 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1222 # system-dependent things.
1223
1224 AVCODEC_COMPONENTS="
1225     bsfs
1226     decoders
1227     encoders
1228     hwaccels
1229     parsers
1230 "
1231
1232 AVDEVICE_COMPONENTS="
1233     indevs
1234     outdevs
1235 "
1236 AVFILTER_COMPONENTS="
1237     filters
1238 "
1239 AVFORMAT_COMPONENTS="
1240     demuxers
1241     muxers
1242     protocols
1243 "
1244
1245 AVRESAMPLE_COMPONENTS=""
1246 AVUTIL_COMPONENTS=""
1247
1248 COMPONENT_LIST="
1249     $AVCODEC_COMPONENTS
1250     $AVDEVICE_COMPONENTS
1251     $AVFILTER_COMPONENTS
1252     $AVFORMAT_COMPONENTS
1253     $AVRESAMPLE_COMPONENTS
1254     $AVUTIL_COMPONENTS
1255 "
1256
1257 EXAMPLE_LIST="
1258     decode_audio_example
1259     decode_video_example
1260     encode_audio_example
1261     encode_video_example
1262     filter_audio_example
1263     metadata_example
1264     output_example
1265     qsvdec_example
1266     transcode_aac_example
1267 "
1268
1269 # catchall list of things that require external libs to link
1270 EXTRALIBS_LIST="
1271     cpu_init
1272     cws2fws
1273 "
1274
1275 HWACCEL_LIBRARY_NONFREE_LIST="
1276     cuda
1277     cuvid
1278     libnpp
1279 "
1280 HWACCEL_LIBRARY_LIST="
1281     $HWACCEL_LIBRARY_NONFREE_LIST
1282     d3d11va
1283     dxva2
1284     libmfx
1285     mmal
1286     nvenc
1287     omx
1288     vaapi
1289     vda
1290     vdpau
1291 "
1292
1293 EXTERNAL_LIBRARY_GPL_LIST="
1294     libcdio
1295     libx264
1296     libx265
1297     libxavs
1298     libxvid
1299 "
1300
1301 EXTERNAL_LIBRARY_NONFREE_LIST="
1302     libfaac
1303     libfdk_aac
1304     openssl
1305 "
1306
1307 EXTERNAL_LIBRARY_VERSION3_LIST="
1308     libopencore_amrnb
1309     libopencore_amrwb
1310     libvo_aacenc
1311     libvo_amrwbenc
1312 "
1313
1314 EXTERNAL_LIBRARY_LIST="
1315     $EXTERNAL_LIBRARY_GPL_LIST
1316     $EXTERNAL_LIBRARY_NONFREE_LIST
1317     $EXTERNAL_LIBRARY_VERSION3_LIST
1318     avisynth
1319     avxsynth
1320     frei0r
1321     gnutls
1322     libbs2b
1323     libdc1394
1324     libdcadec
1325     libfontconfig
1326     libfreetype
1327     libgsm
1328     libhdcd
1329     libilbc
1330     libjack
1331     libkvazaar
1332     libmp3lame
1333     libopencv
1334     libopenh264
1335     libopenjpeg
1336     libopus
1337     libpulse
1338     librtmp
1339     libschroedinger
1340     libsnappy
1341     libspeex
1342     libtheora
1343     libtwolame
1344     libvorbis
1345     libvpx
1346     libwavpack
1347     libwebp
1348     libxcb
1349     libxcb_shm
1350     libxcb_xfixes
1351 "
1352
1353 SYSTEM_LIBRARY_LIST="
1354     bzlib
1355     zlib
1356 "
1357
1358 FEATURE_LIST="
1359     gray
1360     hardcoded_tables
1361     omx_rpi
1362     runtime_cpudetect
1363     safe_bitstream_reader
1364     shared
1365     small
1366     sram
1367     static
1368     swscale_alpha
1369 "
1370
1371 LIBRARY_LIST="
1372     avcodec
1373     avdevice
1374     avfilter
1375     avformat
1376     avresample
1377     avutil
1378     swscale
1379 "
1380
1381 LICENSE_LIST="
1382     gpl
1383     nonfree
1384     version3
1385 "
1386
1387 PROGRAM_LIST="
1388     avconv
1389     avplay
1390     avprobe
1391 "
1392
1393 SUBSYSTEM_LIST="
1394     dct
1395     doc
1396     error_resilience
1397     faan
1398     fft
1399     lsp
1400     lzo
1401     mdct
1402     network
1403     rdft
1404 "
1405
1406 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1407 CONFIG_LIST="
1408     $EXAMPLE_LIST
1409     $EXTERNAL_LIBRARY_LIST
1410     $HWACCEL_LIBRARY_LIST
1411     $FEATURE_LIST
1412     $LICENSE_LIST
1413     $LIBRARY_LIST
1414     $PROGRAM_LIST
1415     $SUBSYSTEM_LIST
1416     $SYSTEM_LIBRARY_LIST
1417     neon_clobber_test
1418     pic
1419     pod2man
1420     texi2html
1421     thumb
1422     valgrind_backtrace
1423     xmm_clobber_test
1424     $COMPONENT_LIST
1425 "
1426
1427 THREADS_LIST="
1428     pthreads
1429     w32threads
1430 "
1431
1432 ATOMICS_LIST="
1433     atomics_gcc
1434     atomics_suncc
1435     atomics_win32
1436 "
1437
1438 ARCH_LIST="
1439     aarch64
1440     alpha
1441     arm
1442     avr32
1443     avr32_ap
1444     avr32_uc
1445     bfin
1446     ia64
1447     m68k
1448     mips
1449     mips64
1450     parisc
1451     ppc
1452     ppc64
1453     s390
1454     sh4
1455     sparc
1456     sparc64
1457     tilegx
1458     tilepro
1459     tomi
1460     x86
1461     x86_32
1462     x86_64
1463 "
1464
1465 ARCH_EXT_LIST_ARM="
1466     armv5te
1467     armv6
1468     armv6t2
1469     armv8
1470     neon
1471     vfp
1472     vfpv3
1473 "
1474
1475 ARCH_EXT_LIST_X86_SIMD="
1476     amd3dnow
1477     amd3dnowext
1478     avx
1479     avx2
1480     fma3
1481     fma4
1482     mmx
1483     mmxext
1484     sse
1485     sse2
1486     sse3
1487     sse4
1488     sse42
1489     ssse3
1490     xop
1491 "
1492
1493 ARCH_EXT_LIST_PPC="
1494     altivec
1495     dcbzl
1496     ldbrx
1497     power8
1498     ppc4xx
1499     vsx
1500 "
1501
1502 ARCH_EXT_LIST_X86="
1503     $ARCH_EXT_LIST_X86_SIMD
1504     cpunop
1505     i686
1506 "
1507
1508 ARCH_EXT_LIST_MIPS="
1509     loongson
1510     mips32r1
1511     mips64r1
1512     mips32r2
1513     mips64r2
1514     mips32r6
1515     mips64r6
1516 "
1517
1518 ARCH_EXT_LIST="
1519     $ARCH_EXT_LIST_ARM
1520     $ARCH_EXT_LIST_MIPS
1521     $ARCH_EXT_LIST_PPC
1522     $ARCH_EXT_LIST_X86
1523     vis
1524 "
1525
1526 ARCH_FEATURES="
1527     aligned_stack
1528     fast_64bit
1529     fast_clz
1530     fast_cmov
1531     local_aligned_8
1532     local_aligned_16
1533     local_aligned_32
1534     simd_align_16
1535     simd_align_32
1536 "
1537
1538 BUILTIN_LIST="
1539     atomic_cas_ptr
1540     machine_rw_barrier
1541     MemoryBarrier
1542     mm_empty
1543     rdtsc
1544     sem_timedwait
1545     sync_val_compare_and_swap
1546 "
1547 HAVE_LIST_CMDLINE="
1548     inline_asm
1549     symver
1550     x86asm
1551 "
1552
1553 HAVE_LIST_PUB="
1554     bigendian
1555     fast_unaligned
1556 "
1557
1558 HEADERS_LIST="
1559     AVFoundation_AVFoundation_h
1560     arpa_inet_h
1561     cdio_paranoia_h
1562     cdio_paranoia_paranoia_h
1563     d3d11_h
1564     dispatch_dispatch_h
1565     dev_bktr_ioctl_bt848_h
1566     dev_bktr_ioctl_meteor_h
1567     dev_ic_bt8xx_h
1568     dev_video_bktr_ioctl_bt848_h
1569     dev_video_meteor_ioctl_meteor_h
1570     direct_h
1571     dxgidebug_h
1572     dxva_h
1573     gsm_h
1574     io_h
1575     mach_mach_time_h
1576     machine_ioctl_bt848_h
1577     machine_ioctl_meteor_h
1578     malloc_h
1579     poll_h
1580     soundcard_h
1581     stdatomic_h
1582     sys_mman_h
1583     sys_param_h
1584     sys_resource_h
1585     sys_select_h
1586     sys_soundcard_h
1587     sys_time_h
1588     sys_un_h
1589     sys_videoio_h
1590     unistd_h
1591     valgrind_valgrind_h
1592     windows_h
1593     winsock2_h
1594 "
1595
1596 INTRINSICS_LIST="
1597     intrinsics_neon
1598 "
1599
1600 MATH_FUNCS="
1601     atanf
1602     atan2f
1603     cbrtf
1604     cosf
1605     exp2
1606     exp2f
1607     expf
1608     isinf
1609     isnan
1610     ldexpf
1611     llrint
1612     llrintf
1613     log2
1614     log2f
1615     log10f
1616     lrint
1617     lrintf
1618     powf
1619     rint
1620     round
1621     roundf
1622     sinf
1623     trunc
1624     truncf
1625 "
1626
1627 SYSTEM_FUNCS="
1628     aligned_malloc
1629     clock_gettime
1630     closesocket
1631     CommandLineToArgvW
1632     CryptGenRandom
1633     fcntl
1634     fork
1635     getaddrinfo
1636     gethrtime
1637     getopt
1638     GetProcessAffinityMask
1639     GetProcessMemoryInfo
1640     GetProcessTimes
1641     getrusage
1642     GetSystemTimeAsFileTime
1643     gettimeofday
1644     gmtime_r
1645     inet_aton
1646     isatty
1647     localtime_r
1648     mach_absolute_time
1649     MapViewOfFile
1650     memalign
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     cbs
1743     cbs_h264
1744     cbs_h265
1745     cbs_mpeg2
1746     dirac_parse
1747     dvprofile
1748     faandct
1749     faanidct
1750     fdctdsp
1751     flacdsp
1752     fmtconvert
1753     g722dsp
1754     gmp
1755     golomb
1756     gplv3
1757     h263dsp
1758     h264chroma
1759     h264dsp
1760     h264parse
1761     h264pred
1762     h264qpel
1763     hevcparse
1764     hpeldsp
1765     huffman
1766     huffyuvdsp
1767     huffyuvencdsp
1768     idctdsp
1769     iirfilter
1770     imdct15
1771     intrax8
1772     iso_media
1773     ividsp
1774     jpegtables
1775     lgplv3
1776     libx262
1777     libxcb_shape
1778     lpc
1779     lzf
1780     me_cmp
1781     mpeg_er
1782     mpegaudio
1783     mpegaudiodsp
1784     mpegaudioheader
1785     mpegvideo
1786     mpegvideoenc
1787     mss34dsp
1788     pixblockdsp
1789     qpeldsp
1790     qsv
1791     qsvdec
1792     qsvenc
1793     qsvvpp
1794     rangecoder
1795     riffdec
1796     riffenc
1797     rtpdec
1798     rtpenc_chain
1799     rv34dsp
1800     sinewin
1801     snappy
1802     srtp
1803     startcode
1804     texturedsp
1805     texturedspenc
1806     tpeldsp
1807     vaapi_encode
1808     vc1dsp
1809     videodsp
1810     vp3dsp
1811     vp56dsp
1812     vp8dsp
1813     wma_freqs
1814     wmv2dsp
1815 "
1816
1817 CMDLINE_SELECT="
1818     $ARCH_EXT_LIST
1819     $CONFIG_LIST
1820     $HAVE_LIST_CMDLINE
1821     $THREADS_LIST
1822     asm
1823     cross_compile
1824     debug
1825     extra_warnings
1826     logging
1827     lto
1828     optimizations
1829     rpath
1830 "
1831
1832 PATHS_LIST="
1833     bindir
1834     datadir
1835     docdir
1836     incdir
1837     libdir
1838     mandir
1839     prefix
1840     shlibdir
1841 "
1842
1843 CMDLINE_SET="
1844     $PATHS_LIST
1845     ar
1846     arch
1847     as
1848     cc
1849     objcc
1850     cpu
1851     cross_prefix
1852     custom_allocator
1853     dep_cc
1854     env
1855     extra_version
1856     host_cc
1857     host_cflags
1858     host_extralibs
1859     host_ld
1860     host_ldflags
1861     host_os
1862     ignore_tests
1863     ld
1864     logfile
1865     malloc_prefix
1866     nm
1867     optflags
1868     pkg_config
1869     pkg_config_flags
1870     random_seed
1871     samples
1872     sysinclude
1873     sysroot
1874     target_exec
1875     target_os
1876     target_path
1877     target_samples
1878     toolchain
1879     x86asmexe
1880 "
1881
1882 CMDLINE_APPEND="
1883     extra_cflags
1884     extra_objcflags
1885     host_cppflags
1886 "
1887
1888 # code dependency declarations
1889
1890 # architecture extensions
1891
1892 armv5te_deps="arm"
1893 armv6_deps="arm"
1894 armv6t2_deps="arm"
1895 armv8_deps="aarch64"
1896 neon_deps_any="aarch64 arm"
1897 intrinsics_neon_deps="neon"
1898 vfp_deps_any="aarch64 arm"
1899 vfpv3_deps="vfp"
1900
1901 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1902
1903 altivec_deps="ppc"
1904 dcbzl_deps="ppc"
1905 ldbrx_deps="ppc"
1906 ppc4xx_deps="ppc"
1907 vsx_deps="altivec"
1908 power8_deps="vsx"
1909
1910 loongson_deps="mips"
1911 mips32r1_deps="mips32"
1912 mips32r2_deps="mips32"
1913 mips32r6_deps="mips32"
1914 mips64r1_deps="mips64"
1915 mips64r2_deps="mips64"
1916 mips64r6_deps="mips64"
1917
1918 vis_deps="sparc"
1919
1920 cpunop_deps="i686"
1921 x86_64_select="i686"
1922 x86_64_suggest="fast_cmov"
1923
1924 amd3dnow_deps="mmx"
1925 amd3dnowext_deps="amd3dnow"
1926 i686_deps="x86"
1927 mmx_deps="x86"
1928 mmxext_deps="mmx"
1929 sse_deps="mmxext"
1930 sse2_deps="sse"
1931 sse3_deps="sse2"
1932 ssse3_deps="sse3"
1933 sse4_deps="ssse3"
1934 sse42_deps="sse4"
1935 avx_deps="sse42"
1936 xop_deps="avx"
1937 fma3_deps="avx"
1938 fma4_deps="avx"
1939 avx2_deps="avx"
1940
1941 mmx_external_deps="x86asm"
1942 mmx_inline_deps="inline_asm x86"
1943 mmx_suggest="mmx_external mmx_inline"
1944
1945 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1946     eval dep=\$${ext}_deps
1947     eval ${ext}_external_deps='"${dep}_external"'
1948     eval ${ext}_inline_deps='"${dep}_inline"'
1949     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1950 done
1951
1952 aligned_stack_if_any="aarch64 ppc x86"
1953 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1954 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1955 fast_unaligned_if_any="aarch64 ppc x86"
1956 simd_align_16_if_any="altivec neon sse"
1957 simd_align_32_if_any="avx"
1958
1959 # system capabilities
1960 symver_if_any="symver_asm_label symver_gnu_asm"
1961 valgrind_backtrace_conflict="optimizations"
1962 valgrind_backtrace_deps="valgrind_valgrind_h"
1963
1964 # threading support
1965 atomics_gcc_if="sync_val_compare_and_swap"
1966 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1967 atomics_win32_if="MemoryBarrier"
1968 atomics_native_if_any="$ATOMICS_LIST"
1969 w32threads_deps="atomics_native"
1970 threads_if_any="$THREADS_LIST"
1971
1972 # subsystems
1973 cbs_h264_select="cbs golomb"
1974 cbs_h265_select="cbs golomb"
1975 cbs_mpeg2_select="cbs"
1976 dct_select="rdft"
1977 dirac_parse_select="golomb"
1978 error_resilience_select="me_cmp"
1979 faandct_deps="faan"
1980 faandct_select="fdctdsp"
1981 faanidct_deps="faan"
1982 faanidct_select="idctdsp"
1983 h264dsp_select="startcode"
1984 hevcparse_select="golomb"
1985 intrax8_select="blockdsp idctdsp"
1986 mdct_select="fft"
1987 rdft_select="fft"
1988 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1989 mpeg_er_select="error_resilience"
1990 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1991 mpegaudiodsp_select="dct"
1992 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1993 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1994 vc1dsp_select="h264chroma qpeldsp startcode"
1995
1996 # decoders / encoders
1997 aac_decoder_select="adts_header imdct15 mdct sinewin"
1998 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1999 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2000 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2001 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2002 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2003 adpcm_g722_decoder_select="g722dsp"
2004 adpcm_g722_encoder_select="g722dsp"
2005 aic_decoder_select="golomb idctdsp"
2006 alac_encoder_select="lpc"
2007 als_decoder_select="bswapdsp"
2008 amrnb_decoder_select="lsp"
2009 amrwb_decoder_select="lsp"
2010 amv_decoder_select="sp5x_decoder"
2011 ape_decoder_select="bswapdsp"
2012 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2013 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2014 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2015 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2016 atrac1_decoder_select="mdct sinewin"
2017 atrac3_decoder_select="mdct"
2018 atrac3p_decoder_select="mdct sinewin"
2019 bink_decoder_select="blockdsp hpeldsp"
2020 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2021 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2022 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2023 clearvideo_decoder_select="idctdsp"
2024 cllc_decoder_select="bswapdsp"
2025 comfortnoise_encoder_select="lpc"
2026 cook_decoder_select="audiodsp mdct sinewin"
2027 cscd_decoder_select="lzo"
2028 cscd_decoder_suggest="zlib"
2029 dca_decoder_select="fmtconvert mdct"
2030 dds_decoder_select="texturedsp"
2031 dnxhd_decoder_select="blockdsp idctdsp"
2032 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2033 dvvideo_decoder_select="dvprofile idctdsp"
2034 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2035 dxa_decoder_deps="zlib"
2036 dxv_decoder_select="lzf texturedsp"
2037 eac3_decoder_select="ac3_decoder"
2038 eac3_encoder_select="ac3_encoder"
2039 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2040 eatgq_decoder_select="aandcttables idctdsp"
2041 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2042 exr_decoder_deps="zlib"
2043 ffv1_decoder_select="rangecoder"
2044 ffv1_encoder_select="rangecoder"
2045 ffvhuff_decoder_select="huffyuv_decoder"
2046 ffvhuff_encoder_select="huffyuv_encoder"
2047 fic_decoder_select="golomb"
2048 flac_decoder_select="flacdsp"
2049 flac_encoder_select="bswapdsp flacdsp lpc"
2050 flashsv_decoder_deps="zlib"
2051 flashsv_encoder_deps="zlib"
2052 flashsv2_decoder_deps="zlib"
2053 flv_decoder_select="h263_decoder"
2054 flv_encoder_select="h263_encoder"
2055 fourxm_decoder_select="blockdsp bswapdsp"
2056 fraps_decoder_select="bswapdsp huffman"
2057 g2m_decoder_deps="zlib"
2058 g2m_decoder_select="blockdsp idctdsp jpegtables"
2059 h261_decoder_select="mpeg_er mpegvideo"
2060 h261_encoder_select="aandcttables mpegvideoenc"
2061 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2062 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2063 h263i_decoder_select="h263_decoder"
2064 h263p_encoder_select="h263_encoder"
2065 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2066 h264_decoder_suggest="error_resilience"
2067 hap_decoder_select="snappy texturedsp"
2068 hap_encoder_deps="libsnappy"
2069 hap_encoder_select="texturedspenc"
2070 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2071 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2072 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2073 iac_decoder_select="imc_decoder"
2074 imc_decoder_select="bswapdsp fft mdct sinewin"
2075 indeo3_decoder_select="hpeldsp"
2076 indeo4_decoder_select="ividsp"
2077 indeo5_decoder_select="ividsp"
2078 interplay_video_decoder_select="hpeldsp"
2079 jpegls_decoder_select="mjpeg_decoder"
2080 jv_decoder_select="blockdsp"
2081 lagarith_decoder_select="huffyuvdsp"
2082 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2083 magicyuv_decoder_select="huffyuvdsp"
2084 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2085 metasound_decoder_select="lsp mdct sinewin"
2086 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2087 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2088 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2089 mjpegb_decoder_select="mjpeg_decoder"
2090 mlp_decoder_select="mlp_parser"
2091 motionpixels_decoder_select="bswapdsp"
2092 mp1_decoder_select="mpegaudio"
2093 mp1float_decoder_select="mpegaudio"
2094 mp2_decoder_select="mpegaudio"
2095 mp2float_decoder_select="mpegaudio"
2096 mp3_decoder_select="mpegaudio"
2097 mp3adu_decoder_select="mpegaudio"
2098 mp3adufloat_decoder_select="mpegaudio"
2099 mp3float_decoder_select="mpegaudio"
2100 mp3on4_decoder_select="mpegaudio"
2101 mp3on4float_decoder_select="mpegaudio"
2102 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2103 mpc8_decoder_select="mpegaudiodsp"
2104 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2105 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2106 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2107 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2108 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2109 mpeg4_encoder_select="h263_encoder"
2110 msa1_decoder_select="mss34dsp"
2111 msmpeg4v1_decoder_select="h263_decoder"
2112 msmpeg4v2_decoder_select="h263_decoder"
2113 msmpeg4v2_encoder_select="h263_encoder"
2114 msmpeg4v3_decoder_select="h263_decoder"
2115 msmpeg4v3_encoder_select="h263_encoder"
2116 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2117 mts2_decoder_select="mss34dsp"
2118 mxpeg_decoder_select="mjpeg_decoder"
2119 nellymoser_decoder_select="mdct sinewin"
2120 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2121 nuv_decoder_select="idctdsp lzo"
2122 on2avc_decoder_select="mdct"
2123 opus_decoder_deps="avresample"
2124 opus_decoder_select="imdct15"
2125 png_decoder_deps="zlib"
2126 png_encoder_deps="zlib"
2127 png_encoder_select="huffyuvencdsp"
2128 prores_decoder_select="idctdsp"
2129 prores_encoder_select="fdctdsp"
2130 qcelp_decoder_select="lsp"
2131 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2132 ra_144_encoder_select="audio_frame_queue lpc"
2133 ralf_decoder_select="golomb"
2134 rscc_decoder_deps="zlib"
2135 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2136 rv10_encoder_select="h263_encoder"
2137 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2138 rv20_encoder_select="h263_encoder"
2139 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2140 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2141 screenpresso_decoder_deps="zlib"
2142 sipr_decoder_select="lsp"
2143 sp5x_decoder_select="mjpeg_decoder"
2144 svq1_decoder_select="hpeldsp"
2145 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2146 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2147 svq3_decoder_suggest="zlib"
2148 tak_decoder_select="audiodsp"
2149 tdsc_decoder_deps="zlib"
2150 tdsc_decoder_select="mjpeg_decoder"
2151 theora_decoder_select="vp3_decoder"
2152 thp_decoder_select="mjpeg_decoder"
2153 tiff_decoder_suggest="zlib"
2154 tiff_encoder_suggest="zlib"
2155 truehd_decoder_select="mlp_decoder"
2156 truemotion2_decoder_select="bswapdsp"
2157 truespeech_decoder_select="bswapdsp"
2158 tscc_decoder_deps="zlib"
2159 txd_decoder_select="texturedsp"
2160 twinvq_decoder_select="mdct lsp sinewin"
2161 utvideo_decoder_select="bswapdsp huffyuvdsp"
2162 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2163 vble_decoder_select="huffyuvdsp"
2164 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2165 vc1image_decoder_select="vc1_decoder"
2166 vorbis_decoder_select="mdct"
2167 vorbis_encoder_select="mdct"
2168 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2169 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2170 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2171 vp6a_decoder_select="vp6_decoder"
2172 vp6f_decoder_select="vp6_decoder"
2173 vp7_decoder_select="h264pred videodsp vp8dsp"
2174 vp8_decoder_select="h264pred videodsp vp8dsp"
2175 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2176 webp_decoder_select="vp8_decoder"
2177 wmapro_decoder_select="mdct sinewin wma_freqs"
2178 wmav1_decoder_select="mdct sinewin wma_freqs"
2179 wmav1_encoder_select="mdct sinewin wma_freqs"
2180 wmav2_decoder_select="mdct sinewin wma_freqs"
2181 wmav2_encoder_select="mdct sinewin wma_freqs"
2182 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2183 wmv1_decoder_select="h263_decoder"
2184 wmv1_encoder_select="h263_encoder"
2185 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2186 wmv2_encoder_select="h263_encoder wmv2dsp"
2187 wmv3_decoder_select="vc1_decoder"
2188 wmv3image_decoder_select="wmv3_decoder"
2189 zerocodec_decoder_deps="zlib"
2190 zlib_decoder_deps="zlib"
2191 zlib_encoder_deps="zlib"
2192 zmbv_decoder_deps="zlib"
2193 zmbv_encoder_deps="zlib"
2194
2195 # hardware accelerators
2196 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2197 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2198 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2199 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2200
2201 h263_vaapi_hwaccel_deps="vaapi"
2202 h263_vaapi_hwaccel_select="h263_decoder"
2203 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2204 h264_cuvid_hwaccel_select="h264_decoder"
2205 h264_d3d11va_hwaccel_deps="d3d11va"
2206 h264_d3d11va_hwaccel_select="h264_decoder"
2207 h264_d3d11va2_hwaccel_deps="d3d11va"
2208 h264_d3d11va2_hwaccel_select="h264_decoder"
2209 h264_dxva2_hwaccel_deps="dxva2"
2210 h264_dxva2_hwaccel_select="h264_decoder"
2211 h264_mmal_hwaccel_deps="mmal"
2212 h264_qsv_hwaccel_deps="libmfx"
2213 h264_vaapi_hwaccel_deps="vaapi"
2214 h264_vaapi_hwaccel_select="h264_decoder"
2215 h264_vda_hwaccel_deps="vda"
2216 h264_vda_hwaccel_select="h264_decoder"
2217 h264_vda_old_hwaccel_deps="vda"
2218 h264_vda_old_hwaccel_select="h264_decoder"
2219 h264_vdpau_hwaccel_deps="vdpau"
2220 h264_vdpau_hwaccel_select="h264_decoder"
2221 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2222 hevc_cuvid_hwaccel_select="hevc_decoder"
2223 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2224 hevc_d3d11va_hwaccel_select="hevc_decoder"
2225 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2226 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2227 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2228 hevc_dxva2_hwaccel_select="hevc_decoder"
2229 hevc_qsv_hwaccel_deps="libmfx"
2230 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2231 hevc_vaapi_hwaccel_select="hevc_decoder"
2232 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2233 hevc_vdpau_hwaccel_select="hevc_decoder"
2234 mpeg1_vdpau_hwaccel_deps="vdpau"
2235 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2236 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2237 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2238 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2239 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2240 mpeg2_dxva2_hwaccel_deps="dxva2"
2241 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2242 mpeg2_mmal_hwaccel_deps="mmal"
2243 mpeg2_qsv_hwaccel_deps="libmfx"
2244 mpeg2_vaapi_hwaccel_deps="vaapi"
2245 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2246 mpeg2_vdpau_hwaccel_deps="vdpau"
2247 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2248 mpeg4_vaapi_hwaccel_deps="vaapi"
2249 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2250 mpeg4_vdpau_hwaccel_deps="vdpau"
2251 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2252 vc1_d3d11va_hwaccel_deps="d3d11va"
2253 vc1_d3d11va_hwaccel_select="vc1_decoder"
2254 vc1_d3d11va2_hwaccel_deps="d3d11va"
2255 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2256 vc1_dxva2_hwaccel_deps="dxva2"
2257 vc1_dxva2_hwaccel_select="vc1_decoder"
2258 vc1_mmal_hwaccel_deps="mmal"
2259 vc1_qsv_hwaccel_deps="libmfx"
2260 vc1_vaapi_hwaccel_deps="vaapi"
2261 vc1_vaapi_hwaccel_select="vc1_decoder"
2262 vc1_vdpau_hwaccel_deps="vdpau"
2263 vc1_vdpau_hwaccel_select="vc1_decoder"
2264 vp8_qsv_hwaccel_deps="libmfx"
2265 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2266 vp8_vaapi_hwaccel_select="vp8_decoder"
2267 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2268 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2269 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2270 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2271 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2272
2273 # hardware-accelerated codecs
2274 nvenc_deps_any="libdl LoadLibrary"
2275 omx_deps="libdl pthreads"
2276 omx_rpi_select="omx"
2277 qsv_deps="libmfx"
2278 qsvdec_select="qsv"
2279 qsvenc_select="qsv"
2280 qsvvpp_select="qsv"
2281 vaapi_encode_deps="vaapi"
2282
2283 hwupload_cuda_filter_deps="cuda"
2284 scale_npp_filter_deps="cuda libnpp"
2285
2286 h264_mmal_decoder_deps="mmal"
2287 h264_nvenc_encoder_deps="nvenc"
2288 h264_omx_encoder_deps="omx"
2289 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2290 h264_qsv_encoder_select="qsvenc"
2291 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2292 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2293 hevc_nvenc_encoder_deps="nvenc"
2294 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2295 hevc_qsv_encoder_select="hevcparse qsvenc"
2296 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2297 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2298 mjpeg_qsv_encoder_deps="libmfx"
2299 mjpeg_qsv_encoder_select="qsvenc"
2300 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2301 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2302 mpeg2_mmal_decoder_deps="mmal"
2303 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2304 mpeg2_qsv_encoder_select="qsvenc"
2305 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2306 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2307 mpeg4_omx_encoder_deps="omx"
2308 vc1_mmal_decoder_deps="mmal"
2309 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2310 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2311 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2312 vp8_vaapi_encoder_select="vaapi_encode"
2313 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2314 vp9_vaapi_encoder_select="vaapi_encode"
2315
2316 nvenc_h264_encoder_select="h264_nvenc_encoder"
2317 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2318
2319 # parsers
2320 aac_parser_select="adts_header"
2321 h264_parser_select="golomb h264dsp h264parse"
2322 hevc_parser_select="hevcparse"
2323 mpegaudio_parser_select="mpegaudioheader"
2324 mpegvideo_parser_select="mpegvideo"
2325 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2326 vc1_parser_select="vc1dsp"
2327
2328 # bitstream_filters
2329 aac_adtstoasc_bsf_select="adts_header"
2330 h264_metadata_bsf_select="cbs_h264"
2331 h264_redundant_pps_bsf_select="cbs_h264"
2332 hevc_metadata_bsf_select="cbs_h265"
2333 mjpeg2jpeg_bsf_select="jpegtables"
2334 mpeg2_metadata_bsf_select="cbs_mpeg2"
2335 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2336
2337 # external libraries
2338 avisynth_deps="LoadLibrary"
2339 avxsynth_deps="libdl"
2340 avisynth_demuxer_deps_any="avisynth avxsynth"
2341 avisynth_demuxer_select="riffdec"
2342 libdcadec_decoder_deps="libdcadec"
2343 libfaac_encoder_deps="libfaac"
2344 libfaac_encoder_select="audio_frame_queue"
2345 libfdk_aac_decoder_deps="libfdk_aac"
2346 libfdk_aac_encoder_deps="libfdk_aac"
2347 libfdk_aac_encoder_select="audio_frame_queue"
2348 libgsm_decoder_deps="libgsm"
2349 libgsm_encoder_deps="libgsm"
2350 libgsm_ms_decoder_deps="libgsm"
2351 libgsm_ms_encoder_deps="libgsm"
2352 libilbc_decoder_deps="libilbc"
2353 libilbc_encoder_deps="libilbc"
2354 libkvazaar_encoder_deps="libkvazaar"
2355 libmp3lame_encoder_deps="libmp3lame"
2356 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2357 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2358 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2359 libopencore_amrnb_encoder_select="audio_frame_queue"
2360 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2361 libopenh264_decoder_deps="libopenh264"
2362 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2363 libopenh264_encoder_deps="libopenh264"
2364 libopenjpeg_decoder_deps="libopenjpeg"
2365 libopenjpeg_encoder_deps="libopenjpeg"
2366 libopus_decoder_deps="libopus"
2367 libopus_encoder_deps="libopus"
2368 libopus_encoder_select="audio_frame_queue"
2369 libschroedinger_decoder_deps="libschroedinger"
2370 libschroedinger_encoder_deps="libschroedinger"
2371 libspeex_decoder_deps="libspeex"
2372 libspeex_encoder_deps="libspeex"
2373 libspeex_encoder_select="audio_frame_queue"
2374 libtheora_encoder_deps="libtheora"
2375 libtwolame_encoder_deps="libtwolame"
2376 libvo_aacenc_encoder_deps="libvo_aacenc"
2377 libvo_aacenc_encoder_select="audio_frame_queue"
2378 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2379 libvorbis_encoder_deps="libvorbis"
2380 libvorbis_encoder_select="audio_frame_queue"
2381 libvpx_vp8_decoder_deps="libvpx"
2382 libvpx_vp8_encoder_deps="libvpx"
2383 libvpx_vp9_decoder_deps="libvpx"
2384 libvpx_vp9_encoder_deps="libvpx"
2385 libwavpack_encoder_deps="libwavpack"
2386 libwavpack_encoder_select="audio_frame_queue"
2387 libwebp_encoder_deps="libwebp"
2388 libx262_encoder_deps="libx262"
2389 libx264_encoder_deps="libx264"
2390 libx265_encoder_deps="libx265"
2391 libxavs_encoder_deps="libxavs"
2392 libxvid_encoder_deps="libxvid mkstemp"
2393
2394 # demuxers / muxers
2395 ac3_demuxer_select="ac3_parser"
2396 asf_demuxer_select="riffdec"
2397 asf_muxer_select="riffenc"
2398 asf_stream_muxer_select="asf_muxer"
2399 avi_demuxer_select="iso_media riffdec"
2400 avi_muxer_select="riffenc"
2401 caf_demuxer_select="iso_media riffdec"
2402 dash_muxer_select="mp4_muxer"
2403 dirac_demuxer_select="dirac_parser"
2404 dv_demuxer_select="dvprofile"
2405 dv_muxer_select="dvprofile"
2406 dxa_demuxer_select="riffdec"
2407 eac3_demuxer_select="ac3_parser"
2408 f4v_muxer_select="mov_muxer"
2409 flac_demuxer_select="flac_parser"
2410 hds_muxer_select="flv_muxer"
2411 hls_muxer_select="mpegts_muxer"
2412 ipod_muxer_select="mov_muxer"
2413 ismv_muxer_select="mov_muxer"
2414 matroska_audio_muxer_select="matroska_muxer"
2415 matroska_demuxer_select="iso_media riffdec"
2416 matroska_demuxer_suggest="bzlib lzo zlib"
2417 matroska_muxer_select="iso_media riffenc"
2418 mmf_muxer_select="riffenc"
2419 mov_demuxer_select="iso_media riffdec"
2420 mov_demuxer_suggest="zlib"
2421 mov_muxer_select="iso_media riffenc rtpenc_chain"
2422 mp3_demuxer_select="mpegaudio_parser"
2423 mp3_muxer_select="mpegaudioheader"
2424 mp4_muxer_select="mov_muxer"
2425 mpegts_demuxer_select="iso_media"
2426 mpegts_muxer_select="adts_muxer latm_muxer"
2427 mpegtsraw_demuxer_select="mpegts_demuxer"
2428 mxf_d10_muxer_select="mxf_muxer"
2429 nut_muxer_select="riffenc"
2430 nuv_demuxer_select="riffdec"
2431 oga_muxer_select="ogg_muxer"
2432 ogg_demuxer_select="dirac_parse"
2433 opus_muxer_select="ogg_muxer"
2434 psp_muxer_select="mov_muxer"
2435 rtp_demuxer_select="sdp_demuxer"
2436 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2437 rtsp_demuxer_select="http_protocol rtpdec"
2438 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2439 sap_demuxer_select="sdp_demuxer"
2440 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2441 sdp_demuxer_select="rtpdec"
2442 smoothstreaming_muxer_select="ismv_muxer"
2443 spdif_demuxer_select="adts_header"
2444 spdif_muxer_select="adts_header"
2445 spx_muxer_select="ogg_muxer"
2446 swf_demuxer_suggest="zlib"
2447 tak_demuxer_select="tak_parser"
2448 tg2_muxer_select="mov_muxer"
2449 tgp_muxer_select="mov_muxer"
2450 w64_demuxer_select="wav_demuxer"
2451 wav_demuxer_select="riffdec"
2452 wav_muxer_select="riffenc"
2453 webm_muxer_select="iso_media riffenc"
2454 wtv_demuxer_select="mpegts_demuxer riffdec"
2455 xmv_demuxer_select="riffdec"
2456 xwma_demuxer_select="riffdec"
2457
2458 # indevs / outdevs
2459 alsa_indev_deps="alsa"
2460 alsa_outdev_deps="alsa"
2461 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2462 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2463 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2464 dv1394_indev_deps="dv1394"
2465 dv1394_indev_select="dv_demuxer"
2466 fbdev_indev_deps="linux_fb_h"
2467 jack_indev_deps="libjack"
2468 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2469 libcdio_indev_deps="libcdio"
2470 libdc1394_indev_deps="libdc1394"
2471 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2472 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2473 pulse_indev_deps="libpulse"
2474 sndio_indev_deps="sndio"
2475 sndio_outdev_deps="sndio"
2476 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2477 vfwcap_indev_deps="vfw32 vfwcap_defines"
2478 xcbgrab_indev_deps="libxcb libxcb_shape"
2479 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2480
2481 # protocols
2482 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2483 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2484 ffrtmpcrypt_protocol_select="tcp_protocol"
2485 ffrtmphttp_protocol_conflict="librtmp_protocol"
2486 ffrtmphttp_protocol_select="http_protocol"
2487 gopher_protocol_select="network"
2488 http_protocol_select="tcp_protocol"
2489 http_protocol_suggest="zlib"
2490 httpproxy_protocol_select="tcp_protocol"
2491 httpproxy_protocol_suggest="zlib"
2492 https_protocol_select="tls_protocol"
2493 https_protocol_suggest="zlib"
2494 icecast_protocol_select="http_protocol"
2495 librtmp_protocol_deps="librtmp"
2496 librtmpe_protocol_deps="librtmp"
2497 librtmps_protocol_deps="librtmp"
2498 librtmpt_protocol_deps="librtmp"
2499 librtmpte_protocol_deps="librtmp"
2500 mmsh_protocol_select="http_protocol"
2501 mmst_protocol_select="network"
2502 rtmp_protocol_conflict="librtmp_protocol"
2503 rtmp_protocol_select="tcp_protocol"
2504 rtmp_protocol_suggest="zlib"
2505 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2506 rtmpe_protocol_suggest="zlib"
2507 rtmps_protocol_conflict="librtmp_protocol"
2508 rtmps_protocol_select="tls_protocol"
2509 rtmps_protocol_suggest="zlib"
2510 rtmpt_protocol_select="ffrtmphttp_protocol"
2511 rtmpt_protocol_suggest="zlib"
2512 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2513 rtmpte_protocol_suggest="zlib"
2514 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2515 rtmpts_protocol_suggest="zlib"
2516 rtp_protocol_select="udp_protocol"
2517 sctp_protocol_deps="struct_sctp_event_subscribe"
2518 sctp_protocol_select="network"
2519 srtp_protocol_select="rtp_protocol srtp"
2520 tcp_protocol_select="network"
2521 tls_protocol_deps_any="gnutls openssl"
2522 tls_protocol_select="tcp_protocol"
2523 udp_protocol_select="network"
2524 unix_protocol_deps="sys_un_h"
2525 unix_protocol_select="network"
2526
2527 # filters
2528 asyncts_filter_deps="avresample"
2529 blackframe_filter_deps="gpl"
2530 boxblur_filter_deps="gpl"
2531 bs2b_filter_deps="libbs2b"
2532 cropdetect_filter_deps="gpl"
2533 deinterlace_qsv_filter_deps="libmfx"
2534 deinterlace_vaapi_filter_deps="vaapi"
2535 delogo_filter_deps="gpl"
2536 drawtext_filter_deps="libfreetype"
2537 drawtext_filter_suggest="libfontconfig"
2538 frei0r_filter_deps="frei0r libdl"
2539 frei0r_src_filter_deps="frei0r libdl"
2540 hdcd_filter_deps="libhdcd"
2541 hqdn3d_filter_deps="gpl"
2542 interlace_filter_deps="gpl"
2543 movie_filter_deps="avcodec avformat"
2544 ocv_filter_deps="libopencv"
2545 overlay_qsv_filter_deps="libmfx"
2546 overlay_qsv_filter_select="qsvvpp"
2547 resample_filter_deps="avresample"
2548 scale_filter_deps="swscale"
2549 scale_qsv_filter_deps="libmfx"
2550 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2551 vpp_qsv_filter_deps="libmfx"
2552 vpp_qsv_filter_select="qsvvpp"
2553
2554 # examples
2555 decode_audio_example_deps="avcodec avutil"
2556 decode_video_example_deps="avcodec avutil"
2557 encode_audio_example_deps="avcodec avutil"
2558 encode_video_example_deps="avcodec avutil"
2559 filter_audio_example_deps="avfilter avutil"
2560 metadata_example_deps="avformat avutil"
2561 output_example_deps="avcodec avformat avresample avutil swscale"
2562 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2563 transcode_aac_example_deps="avcodec avformat avresample"
2564
2565 # EXTRALIBS_LIST
2566 cpu_init_extralibs="pthreads_extralibs"
2567 cws2fws_extralibs="zlib_extralibs"
2568
2569 # libraries, in linking order
2570 avcodec_deps="avutil"
2571 avcodec_select="null_bsf"
2572 avdevice_deps="avformat avcodec avutil"
2573 avfilter_deps="avutil"
2574 avformat_deps="avcodec avutil"
2575 avformat_suggest="network"
2576 avresample_deps="avutil"
2577 swscale_deps="avutil"
2578
2579 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2580 avdevice_extralibs="libm_extralibs"
2581 avformat_extralibs="libm_extralibs"
2582 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2583 avresample_extralibs="libm_extralibs"
2584 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2585 swscale_extralibs="libm_extralibs"
2586
2587 # programs
2588 avconv_deps="avcodec avfilter avformat avresample swscale"
2589 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2590                fps_filter null_filter resample_filter scale_filter
2591                trim_filter"
2592 avconv_suggest="psapi shell32"
2593 avplay_deps="avcodec avfilter avformat avresample sdl"
2594 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2595 avplay_suggest="shell32"
2596 avprobe_deps="avcodec avformat"
2597 avprobe_suggest="shell32"
2598
2599 # documentation
2600 pod2man_deps="doc"
2601 texi2html_deps="doc"
2602
2603 # default parameters
2604
2605 logfile="avbuild/config.log"
2606
2607 # installation paths
2608 prefix_default="/usr/local"
2609 bindir_default='${prefix}/bin'
2610 datadir_default='${prefix}/share/avconv'
2611 docdir_default='${prefix}/share/doc/libav'
2612 incdir_default='${prefix}/include'
2613 libdir_default='${prefix}/lib'
2614 mandir_default='${prefix}/share/man'
2615 shlibdir_default="$libdir_default"
2616
2617 # toolchain
2618 ar_default="ar"
2619 cc_default="gcc"
2620 host_cc_default="gcc"
2621 x86asmexe_default="nasm"
2622 ln_s="ln -s -f"
2623 nm_default="nm -g"
2624 pkg_config_default=pkg-config
2625 ranlib="ranlib"
2626 strip="strip"
2627 version_script='--version-script'
2628
2629 # machine
2630 arch_default=$(uname -m)
2631 cpu="generic"
2632 intrinsics="none"
2633
2634 # OS
2635 target_os_default=$(tolower $(uname -s))
2636 host_os=$target_os_default
2637
2638 # configurable options
2639 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2640
2641 enable asm
2642 enable debug
2643 enable doc
2644 enable faan faandct faanidct
2645 enable optimizations
2646 enable safe_bitstream_reader
2647 enable static
2648 enable swscale_alpha
2649 enable valgrind_backtrace
2650
2651 # By default, enable only those hwaccels that have no external dependencies.
2652 enable d3d11va dxva2 vda vdpau
2653
2654 # internal components are enabled by default
2655 enable $EXTRALIBS_LIST
2656
2657 # Avoid external, non-system, libraries getting enabled by dependency resolution
2658 disable $EXTERNAL_LIBRARY_LIST
2659
2660 # build settings
2661 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2662 LIBPREF="lib"
2663 LIBSUF=".a"
2664 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2665 SLIBPREF="lib"
2666 SLIBSUF=".so"
2667 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2668 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2669 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2670 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2671 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2672 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2673 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2674
2675 asflags_filter=echo
2676 cflags_filter=echo
2677 ldflags_filter=echo
2678
2679 AS_C='-c'
2680 AS_O='-o $@'
2681 CC_C='-c'
2682 CC_E='-E -o $@'
2683 CC_O='-o $@'
2684 OBJCC_C='-c'
2685 OBJCC_E='-E -o $@'
2686 OBJCC_O='-o $@'
2687 X86ASM_O='-o $@'
2688 LD_O='-o $@'
2689 LD_LIB='-l%'
2690 LD_PATH='-L'
2691 HOSTCC_C='-c'
2692 HOSTCC_E='-E -o $@'
2693 HOSTCC_O='-o $@'
2694 HOSTLD_O='-o $@'
2695
2696 host_extralibs='-lm'
2697 host_cflags_filter=echo
2698 host_ldflags_filter=echo
2699
2700 target_path='$(CURDIR)'
2701
2702 # since the object filename is not given with the -MM flag, the compiler
2703 # is only able to print the basename, and we must add the path ourselves
2704 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2705 DEPFLAGS='-MM'
2706
2707 mkdir -p avbuild
2708
2709 # find source path
2710 if test -f configure; then
2711     source_path=.
2712 else
2713     source_path=$(cd $(dirname "$0"); pwd)
2714     echo "$source_path" | grep -q '[[:blank:]]' &&
2715         die "Out of tree builds are impossible with whitespace in source path."
2716     test -e "$source_path/config.h" &&
2717         die "Out of tree builds are impossible with config.h in source dir."
2718 fi
2719
2720 for v in "$@"; do
2721     r=${v#*=}
2722     l=${v%"$r"}
2723     r=$(sh_quote "$r")
2724     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2725 done
2726
2727 find_things(){
2728     thing=$1
2729     pattern=$2
2730     file=$source_path/$3
2731     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2732 }
2733
2734 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2735 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2736 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2737 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2738 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2739 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2740 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2741 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2742 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2743
2744 find_things_extern(){
2745     thing=$1
2746     pattern=$2
2747     file=$source_path/$3
2748     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2749 }
2750
2751 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2752 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2753
2754 AVCODEC_COMPONENTS_LIST="
2755     $BSF_LIST
2756     $DECODER_LIST
2757     $ENCODER_LIST
2758     $HWACCEL_LIST
2759     $PARSER_LIST
2760 "
2761
2762 AVDEVICE_COMPONENTS_LIST="
2763     $INDEV_LIST
2764     $OUTDEV_LIST
2765 "
2766
2767 AVFILTER_COMPONENTS_LIST="
2768     $FILTER_LIST
2769 "
2770
2771 AVFORMAT_COMPONENTS_LIST="
2772     $DEMUXER_LIST
2773     $MUXER_LIST
2774     $PROTOCOL_LIST
2775 "
2776
2777 ALL_COMPONENTS="
2778     $AVCODEC_COMPONENTS_LIST
2779     $AVDEVICE_COMPONENTS_LIST
2780     $AVFILTER_COMPONENTS_LIST
2781     $AVFORMAT_COMPONENTS_LIST
2782 "
2783
2784 for n in $COMPONENT_LIST; do
2785     v=$(toupper ${n%s})_LIST
2786     eval enable \$$v
2787     eval ${n}_if_any="\$$v"
2788 done
2789
2790 enable $ARCH_EXT_LIST
2791
2792 die_unknown(){
2793     echo "Unknown option \"$1\"."
2794     echo "See $0 --help for available options."
2795     exit 1
2796 }
2797
2798 print_3_columns() {
2799     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2800 }
2801
2802 show_list() {
2803     suffix=_$1
2804     shift
2805     echo $* | sed s/$suffix//g | print_3_columns
2806     exit 0
2807 }
2808
2809 rand_list(){
2810     IFS=', '
2811     set -- $*
2812     unset IFS
2813     for thing; do
2814         comp=${thing%:*}
2815         prob=${thing#$comp}
2816         prob=${prob#:}
2817         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2818         echo "prob ${prob:-0.5}"
2819         printf '%s\n' $comp
2820     done
2821 }
2822
2823 do_random(){
2824     action=$1
2825     shift
2826     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2827     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2828 }
2829
2830 for opt do
2831     optval="${opt#*=}"
2832     case "$opt" in
2833         --extra-ldflags=*)
2834             add_ldflags $optval
2835         ;;
2836         --extra-ldexeflags=*)
2837             add_ldexeflags $optval
2838         ;;
2839         --extra-ldsoflags=*)
2840             add_ldsoflags $optval
2841         ;;
2842         --extra-libs=*)
2843             add_extralibs $optval
2844         ;;
2845         --disable-devices)
2846             disable $INDEV_LIST $OUTDEV_LIST
2847         ;;
2848         --enable-debug=*)
2849             debuglevel="$optval"
2850         ;;
2851         --disable-programs)
2852             disable $PROGRAM_LIST
2853         ;;
2854         --disable-everything)
2855             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2856         ;;
2857         --disable-all)
2858             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2859             disable $LIBRARY_LIST $PROGRAM_LIST doc
2860         ;;
2861         --enable-random|--disable-random)
2862             action=${opt%%-random}
2863             do_random ${action#--} $COMPONENT_LIST
2864         ;;
2865         --enable-random=*|--disable-random=*)
2866             action=${opt%%-random=*}
2867             do_random ${action#--} $optval
2868         ;;
2869         --enable-*=*|--disable-*=*)
2870             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2871             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2872             eval list=\$$(toupper $thing)_LIST
2873             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2874             $action $(filter "$name" $list)
2875         ;;
2876         --enable-avserver|--disable-avserver*)
2877             warn "avserver has been removed, the ${opt} option is only"\
2878                  "provided for compatibility and will be removed in the future"
2879         ;;
2880         --enable-yasm|--disable-yasm)
2881             warn "The ${opt} option is only provided for compatibility and will be\n"\
2882                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2883             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2884         ;;
2885         --enable-?*|--disable-?*)
2886             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2887             if is_in $option $COMPONENT_LIST; then
2888                 test $action = disable && action=unset
2889                 eval $action \$$(toupper ${option%s})_LIST
2890             elif is_in $option $CMDLINE_SELECT; then
2891                 $action $option
2892             else
2893                 die_unknown $opt
2894             fi
2895         ;;
2896         --list-*)
2897             NAME="${opt#--list-}"
2898             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2899             NAME=${NAME%s}
2900             eval show_list $NAME \$$(toupper $NAME)_LIST
2901         ;;
2902         --help|-h) show_help
2903         ;;
2904         --quiet|-q) quiet=yes
2905         ;;
2906         *)
2907             optname="${opt%%=*}"
2908             optname="${optname#--}"
2909             optname=$(echo "$optname" | sed 's/-/_/g')
2910             if is_in $optname $CMDLINE_SET; then
2911                 eval $optname='$optval'
2912             elif is_in $optname $CMDLINE_APPEND; then
2913                 append $optname "$optval"
2914             else
2915                 die_unknown $opt
2916             fi
2917         ;;
2918     esac
2919 done
2920
2921 for e in $env; do
2922     eval "export $e"
2923 done
2924
2925 disabled logging && logfile=/dev/null
2926
2927 # Die early if licensing-related configure options are incompatible.
2928 die_license_disabled() {
2929     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2930 }
2931
2932 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2933 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2934 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2935
2936 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2937
2938 enabled_all gnutls openssl &&
2939     die "GnuTLS and OpenSSL must not be enabled at the same time."
2940
2941 # Disable all the library-specific components if the library itself
2942 # is disabled, see AVCODEC_LIST and following _LIST variables.
2943
2944 disable_components(){
2945     disabled ${1} && disable $(
2946         eval components="\$$(toupper ${1})_COMPONENTS"
2947         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2948     )
2949 }
2950
2951 map 'disable_components $v' $LIBRARY_LIST
2952
2953 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2954 set >> $logfile
2955
2956 case "$toolchain" in
2957     *-asan)
2958         cc_default="${toolchain%-asan}"
2959         add_cflags  -fsanitize=address
2960         add_ldflags -fsanitize=address
2961     ;;
2962     *-msan)
2963         cc_default="${toolchain%-msan}"
2964         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2965         add_ldflags -fsanitize=memory
2966     ;;
2967     *-tsan)
2968         cc_default="${toolchain%-tsan}"
2969         add_cflags  -fsanitize=thread -fPIE
2970         add_ldflags -fsanitize=thread -pie
2971         case "$toolchain" in
2972             gcc-tsan)
2973                 add_cflags  -fPIC
2974                 add_ldflags -fPIC
2975                 ;;
2976         esac
2977     ;;
2978     *-usan)
2979         cc_default="${toolchain%-usan}"
2980         add_cflags  -fsanitize=undefined
2981         add_ldflags -fsanitize=undefined
2982         case "$toolchain" in
2983             clang-usan)
2984                 add_cflags -O1
2985                 ;;
2986         esac
2987     ;;
2988     valgrind-*)
2989         target_exec_default="valgrind"
2990         case "$toolchain" in
2991             valgrind-massif)
2992                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2993                 ;;
2994             valgrind-memcheck)
2995                 target_exec_args="--track-origins=yes --leak-check=full"
2996                 ;;
2997         esac
2998     ;;
2999     msvc)
3000         # Check whether the current MSVC version needs the C99 converter.
3001         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3002         # support enough of C99 to build libav. Default to the new
3003         # behaviour if the regexp was unable to match anything, since this
3004         # successfully parses the version number of existing supported
3005         # versions that require the converter (MSVC 2010 and 2012).
3006         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3007         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3008             cc_default="cl"
3009         else
3010             cc_default="c99wrap cl"
3011         fi
3012         ld_default="$source_path/compat/windows/mslink"
3013         nm_default="dumpbin -symbols"
3014         ar_default="lib"
3015         case "$arch" in
3016         arm*)
3017             as_default="armasm"
3018             ;;
3019         esac
3020         target_os_default="win32"
3021         # Use a relative path for TMPDIR. This makes sure all the
3022         # ffconf temp files are written with a relative path, avoiding
3023         # issues with msys/win32 path conversion for MSVC parameters
3024         # such as -Fo<file> or -out:<file>.
3025         TMPDIR=.
3026     ;;
3027     icl)
3028         cc_default="icl"
3029         ld_default="xilink"
3030         nm_default="dumpbin -symbols"
3031         ar_default="xilib"
3032         target_os_default="win32"
3033         TMPDIR=.
3034     ;;
3035     gcov)
3036         add_cflags  -fprofile-arcs -ftest-coverage
3037         add_ldflags -fprofile-arcs -ftest-coverage
3038     ;;
3039     llvm-cov)
3040         add_cflags -fprofile-arcs -ftest-coverage
3041         add_ldflags --coverage
3042     ;;
3043     hardened)
3044         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3045         add_cflags   -fno-strict-overflow -fstack-protector-all
3046         add_ldflags  -Wl,-z,relro -Wl,-z,now
3047     ;;
3048     ?*)
3049         die "Unknown toolchain $toolchain"
3050     ;;
3051 esac
3052
3053 test -n "$cross_prefix" && enable cross_compile
3054
3055 if enabled cross_compile; then
3056     test -n "$arch" && test -n "$target_os" ||
3057         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3058 fi
3059
3060 ar_default="${cross_prefix}${ar_default}"
3061 cc_default="${cross_prefix}${cc_default}"
3062 objcc_default="${cross_prefix}${objcc_default}"
3063 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3064 nm_default="${cross_prefix}${nm_default}"
3065 pkg_config_default="${cross_prefix}${pkg_config_default}"
3066 ranlib="${cross_prefix}${ranlib}"
3067 strip="${cross_prefix}${strip}"
3068
3069 sysinclude_default="${sysroot}/usr/include"
3070
3071 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3072 enabled cross_compile || host_cc_default=$cc
3073 set_default host_cc
3074
3075 if ! $pkg_config --version >/dev/null 2>&1; then
3076     warn "$pkg_config not found, library detection may fail."
3077     pkg_config=false
3078 fi
3079
3080 exesuf() {
3081     case $1 in
3082         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3083     esac
3084 }
3085
3086 EXESUF=$(exesuf $target_os)
3087 HOSTEXESUF=$(exesuf $host_os)
3088
3089 # set temporary file name
3090 : ${TMPDIR:=$TEMPDIR}
3091 : ${TMPDIR:=$TMP}
3092 : ${TMPDIR:=/tmp}
3093
3094 if ! check_cmd mktemp -u XXXXXX; then
3095     # simple replacement for missing mktemp
3096     # NOT SAFE FOR GENERAL USE
3097     mktemp(){
3098         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3099         echo "$tmpname"
3100         mkdir "$tmpname"
3101     }
3102 fi
3103
3104 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3105     die "Unable to create temporary directory in $TMPDIR."
3106
3107 tmpfile(){
3108     tmp="${AVTMPDIR}/test"$2
3109     (set -C; exec > $tmp) 2> /dev/null ||
3110         die "Unable to create temporary file in $AVTMPDIR."
3111     eval $1=$tmp
3112 }
3113
3114 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3115 trap 'exit 2' INT
3116
3117 tmpfile TMPASM .asm
3118 tmpfile TMPC   .c
3119 tmpfile TMPE   $EXESUF
3120 tmpfile TMPH   .h
3121 tmpfile TMPO   .o
3122 tmpfile TMPS   .S
3123 tmpfile TMPSH  .sh
3124 tmpfile TMPV   .ver
3125
3126 unset -f mktemp
3127
3128 chmod +x $TMPE
3129
3130 # make sure we can execute files in $TMPDIR
3131 cat > $TMPSH 2>> $logfile <<EOF
3132 #! /bin/sh
3133 EOF
3134 chmod +x $TMPSH >> $logfile 2>&1
3135 if ! $TMPSH >> $logfile 2>&1; then
3136     cat <<EOF
3137 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3138 variable to another directory and make sure that it is not mounted noexec.
3139 EOF
3140     die "Sanity test failed."
3141 fi
3142
3143 armasm_flags(){
3144     for flag; do
3145         case $flag in
3146             # Filter out MSVC cl.exe options from cflags that shouldn't
3147             # be passed to gas-preprocessor
3148             -M[TD]*)                                            ;;
3149             *)                  echo $flag                      ;;
3150         esac
3151    done
3152 }
3153
3154 cparser_flags(){
3155     for flag; do
3156         case $flag in
3157             -Wno-switch)             echo -Wno-switch-enum ;;
3158             -Wno-format-zero-length) ;;
3159             -Wdisabled-optimization) ;;
3160             -Wno-pointer-sign)       echo -Wno-other ;;
3161             *)                       echo $flag ;;
3162         esac
3163     done
3164 }
3165
3166 msvc_common_flags(){
3167     for flag; do
3168         case $flag in
3169             # In addition to specifying certain flags under the compiler
3170             # specific filters, they must be specified here as well or else the
3171             # generic catch all at the bottom will print the original flag.
3172             -Wall)                ;;
3173             -Wextra)              ;;
3174             -std=c99)             ;;
3175             # Common flags
3176             -fomit-frame-pointer) ;;
3177             -g)                   echo -Z7 ;;
3178             -fno-math-errno)      ;;
3179             -fno-common)          ;;
3180             -fno-signed-zeros)    ;;
3181             -fPIC)                ;;
3182             -mthumb)              ;;
3183             -march=*)             ;;
3184             -lz)                  echo zlib.lib ;;
3185             -lx264)               echo libx264.lib ;;
3186             -l*)                  echo ${flag#-l}.lib ;;
3187             -L*)                  echo -libpath:${flag#-L} ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 msvc_flags(){
3194     msvc_common_flags "$@"
3195     for flag; do
3196         case $flag in
3197             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3198                                        -wd4554 ;;
3199             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3200                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3201                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3202                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3203         esac
3204     done
3205 }
3206
3207 icl_flags(){
3208     msvc_common_flags "$@"
3209     for flag; do
3210         case $flag in
3211             # Despite what Intel's documentation says -Wall, which is supported
3212             # on Windows, does enable remarks so disable them here.
3213             -Wall)                echo $flag -Qdiag-disable:remark ;;
3214             -std=c99)             echo -Qstd=c99 ;;
3215         esac
3216     done
3217 }
3218
3219 pgi_flags(){
3220     for flag; do
3221         case $flag in
3222             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3223             -fomit-frame-pointer) echo -Mnoframe ;;
3224             -g)                   echo -gopt ;;
3225             *)                    echo $flag ;;
3226         esac
3227     done
3228 }
3229
3230 suncc_flags(){
3231     for flag; do
3232         case $flag in
3233             -march=*|-mcpu=*)
3234                 case "${flag#*=}" in
3235                     native)                   echo -xtarget=native       ;;
3236                     v9|niagara)               echo -xarch=sparc          ;;
3237                     ultrasparc)               echo -xarch=sparcvis       ;;
3238                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3239                     i586|pentium)             echo -xchip=pentium        ;;
3240                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3241                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3242                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3243                     pentium4*)          echo -xtarget=pentium4           ;;
3244                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3245                     *-sse3)             echo -xarch=sse3                 ;;
3246                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3247                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3248                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3249                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3250                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3251                     k8|opteron|athlon64|athlon-fx)
3252                                                echo -xarch=sse2a         ;;
3253                     athlon*)                   echo -xarch=pentium_proa  ;;
3254                 esac
3255                 ;;
3256             -std=c99)             echo -xc99              ;;
3257             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3258             -fPIC)                echo -KPIC -xcode=pic32 ;;
3259             -W*,*)                echo $flag              ;;
3260             -f*-*|-W*|-mimpure-text)                      ;;
3261             -shared)              echo -G                 ;;
3262             *)                    echo $flag              ;;
3263         esac
3264     done
3265 }
3266
3267 tms470_flags(){
3268     for flag; do
3269         case $flag in
3270             -march=*|-mcpu=*)
3271                 case "${flag#*=}" in
3272                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3273                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3274                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3275                     armv6*|arm11*)          echo -mv=6   ;;
3276                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3277                                             echo -mv=5e  ;;
3278                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3279                 esac
3280                 ;;
3281             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3282             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3283             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3284             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3285             -msoft-float)   echo --float_support=vfplib       ;;
3286             -O[0-3]|-mf=*)  echo $flag                        ;;
3287             -g)             echo -g -mn                       ;;
3288             -pds=*)         echo $flag                        ;;
3289             -D*|-I*)        echo $flag                        ;;
3290             --gcc|--abi=*)  echo $flag                        ;;
3291             -me)            echo $flag                        ;;
3292         esac
3293     done
3294 }
3295
3296 probe_cc(){
3297     pfx=$1
3298     _cc=$2
3299
3300     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3301     unset _ld_o _ldflags _ld_lib _ld_path
3302     unset _depflags _DEPCMD _DEPFLAGS
3303     _flags_filter=echo
3304
3305     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3306         _type=llvm_gcc
3307         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3308         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3309         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3310         _cflags_speed='-O3'
3311         _cflags_size='-Os'
3312     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3313         _type=gcc
3314         gcc_version=$($_cc --version | head -n1)
3315         gcc_basever=$($_cc -dumpversion)
3316         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3317         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3318         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3319         if ! $_cc -dumpversion | grep -q '^2\.'; then
3320             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         fi
3322         _cflags_speed='-O3'
3323         _cflags_size='-Os'
3324     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3325         _type=icc
3326         _ident=$($_cc --version | head -n1)
3327         _depflags='-MMD'
3328         _cflags_speed='-O3'
3329         _cflags_size='-Os'
3330         _cflags_noopt='-O1'
3331     elif $_cc -v 2>&1 | grep -q xlc; then
3332         _type=xlc
3333         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3334         _cflags_speed='-O5'
3335         _cflags_size='-O5 -qcompact'
3336     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3337         test -d "$sysroot" || die "No valid sysroot specified."
3338         _type=armcc
3339         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3340         armcc_conf="$PWD/armcc.conf"
3341         $_cc --arm_linux_configure                 \
3342              --arm_linux_config_file="$armcc_conf" \
3343              --configure_sysroot="$sysroot"        \
3344              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3345              die "Error creating armcc configuration file."
3346         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3347         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3348         as_default="${cross_prefix}gcc"
3349         _depflags='-MMD'
3350         _cflags_speed='-O3'
3351         _cflags_size='-Os'
3352     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3353         _type=tms470
3354         _ident=$($_cc -version | head -n1 | tr -s ' ')
3355         _flags='--gcc --abi=eabi -me'
3356         _cc_e='-ppl -fe=$@'
3357         _cc_o='-fe=$@'
3358         _depflags='-ppa -ppd=$(@:.o=.d)'
3359         _cflags_speed='-O3 -mf=5'
3360         _cflags_size='-O3 -mf=2'
3361         _flags_filter=tms470_flags
3362     elif $_cc -v 2>&1 | grep -q clang; then
3363         _type=clang
3364         _ident=$($_cc --version 2>/dev/null | head -n1)
3365         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3366         _cflags_speed='-O3'
3367         _cflags_size='-Os'
3368     elif $_cc -V 2>&1 | grep -q Sun; then
3369         _type=suncc
3370         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3371         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3372         _DEPFLAGS='-xM1 -xc99'
3373         _ldflags='-std=c99'
3374         _cflags_speed='-O5'
3375         _cflags_size='-O5 -xspace'
3376         _flags_filter=suncc_flags
3377     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3378         _type=pathscale
3379         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3380         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3381         _cflags_speed='-O2'
3382         _cflags_size='-Os'
3383         _flags_filter='filter_out -Wdisabled-optimization'
3384     elif $_cc -v 2>&1 | grep -q Open64; then
3385         _type=open64
3386         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3387         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3388         _cflags_speed='-O2'
3389         _cflags_size='-Os'
3390         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3391     elif $_cc -V 2>&1 | grep -q Portland; then
3392         _type=pgi
3393         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3394         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3395         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3396         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3397         _cflags_noopt="-O1"
3398         _flags_filter=pgi_flags
3399     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3400         _type=armasm
3401         _ident=$($_cc | head -n1)
3402         # 4509: "This form of conditional instruction is deprecated"
3403         _flags="-nologo -ignore 4509"
3404         _flags_filter=armasm_flags
3405     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3406         _type=msvc
3407         _ident=$($_cc 2>&1 | head -n1)
3408         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3409         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3410         _cflags_speed="-O2"
3411         _cflags_size="-O1"
3412         _cflags_noopt="-O1"
3413         if $_cc -nologo- 2>&1 | grep -q Linker; then
3414             _ld_o='-out:$@'
3415         else
3416             _ld_o='-Fe$@'
3417         fi
3418         _cc_o='-Fo$@'
3419         _cc_e='-P -Fi$@'
3420         _flags_filter=msvc_flags
3421         _ld_lib='lib%.a'
3422         _ld_path='-libpath:'
3423         _flags='-nologo'
3424     elif $_cc 2>&1 | grep -q Intel; then
3425         _type=icl
3426         _ident=$($_cc 2>&1 | head -n1)
3427         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3428         # Not only is O3 broken on 13.x+ but it is slower on all previous
3429         # versions (tested) as well.
3430         _cflags_speed="-O2"
3431         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3432         if $_cc 2>&1 | grep -q Linker; then
3433             _ld_o='-out:$@'
3434         else
3435             _ld_o='-Fe$@'
3436         fi
3437         _cc_o='-Fo$@'
3438         _cc_e='-P'
3439         _flags_filter=icl_flags
3440         _ld_lib='lib%.a'
3441         _ld_path='-libpath:'
3442         # -Qdiag-error to make icl error when seeing certain unknown arguments
3443         _flags='-nologo -Qdiag-error:4044,10157'
3444         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3445         # with MSVC which enables it by default.
3446         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3447     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3448         # lld can emulate multiple different linkers; in ms link.exe mode,
3449         # the -? parameter gives the help output which contains an identifyable
3450         # string, while it gives an error in other modes.
3451         _type=lld-link
3452         # The link.exe mode doesn't have a switch for getting the version,
3453         # but we can force it back to gnu mode and get the version from there.
3454         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3455         _ld_o='-out:$@'
3456         _flags_filter=msvc_flags
3457         _ld_lib='lib%.a'
3458         _ld_path='-libpath:'
3459     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3460         _type=cparser
3461         _ident=$($_cc --version | head -n1)
3462         _depflags='-MMD'
3463         _cflags_speed='-O4'
3464         _cflags_size='-O2'
3465         _flags_filter=cparser_flags
3466     fi
3467
3468     eval ${pfx}_type=\$_type
3469     eval ${pfx}_ident=\$_ident
3470 }
3471
3472 set_ccvars(){
3473     eval ${1}_C=\${_cc_c-\${${1}_C}}
3474     eval ${1}_E=\${_cc_e-\${${1}_E}}
3475     eval ${1}_O=\${_cc_o-\${${1}_O}}
3476
3477     if [ -n "$_depflags" ]; then
3478         eval ${1}_DEPFLAGS=\$_depflags
3479     else
3480         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3481         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3482         eval DEP${1}FLAGS=\$_flags
3483     fi
3484 }
3485
3486 probe_cc cc "$cc"
3487 cflags_filter=$_flags_filter
3488 cflags_speed=$_cflags_speed
3489 cflags_size=$_cflags_size
3490 cflags_noopt=$_cflags_noopt
3491 add_cflags $_flags $_cflags
3492 cc_ldflags=$_ldflags
3493 set_ccvars CC
3494
3495 probe_cc hostcc "$host_cc"
3496 host_cflags_filter=$_flags_filter
3497 host_cflags_speed=$_cflags_speed
3498 add_host_cflags  $_flags $_cflags
3499 set_ccvars HOSTCC
3500
3501 test -n "$cc_type" && enable $cc_type ||
3502     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3503
3504 : ${as_default:=$cc}
3505 : ${objcc_default:=$cc}
3506 : ${dep_cc_default:=$cc}
3507 : ${ld_default:=$cc}
3508 : ${host_ld_default:=$host_cc}
3509 set_default ar as objcc dep_cc ld host_ld
3510
3511 probe_cc as "$as"
3512 asflags_filter=$_flags_filter
3513 add_asflags $_flags $_cflags
3514 set_ccvars AS
3515
3516 probe_cc objcc "$objcc"
3517 objcflags_filter=$_flags_filter
3518 add_objcflags $_flags $_cflags
3519 set_ccvars OBJC
3520
3521 probe_cc ld "$ld"
3522 ldflags_filter=$_flags_filter
3523 add_ldflags $_flags $_ldflags
3524 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3525 LD_O=${_ld_o-$LD_O}
3526 LD_LIB=${_ld_lib-$LD_LIB}
3527 LD_PATH=${_ld_path-$LD_PATH}
3528
3529 probe_cc hostld "$host_ld"
3530 host_ldflags_filter=$_flags_filter
3531 add_host_ldflags $_flags $_ldflags
3532 HOSTLD_O=${_ld_o-$HOSTLD_O}
3533
3534 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3535     probe_cc depcc "$dep_cc"
3536     CCDEP=${_DEPCMD:-$DEPCMD}
3537     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3538     DEPCCFLAGS=$_flags
3539 fi
3540
3541 if $ar 2>&1 | grep -q Microsoft; then
3542     arflags="-nologo"
3543     ar_o='-out:$@'
3544 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3545     arflags="rq"
3546     ar_o='$@'
3547 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3548     arflags='-Xany -r -c'
3549     ar_o='$@'
3550 else
3551     arflags="rc"
3552     ar_o='$@'
3553 fi
3554
3555 add_cflags $extra_cflags
3556 add_objcflags $extra_objcflags
3557 add_asflags $extra_cflags
3558
3559 if test -n "$sysroot"; then
3560     case "$cc_type" in
3561         gcc|llvm_gcc|clang)
3562             add_cppflags --sysroot="$sysroot"
3563             add_ldflags --sysroot="$sysroot"
3564         ;;
3565         tms470)
3566             add_cppflags -I"$sysinclude"
3567             add_ldflags  --sysroot="$sysroot"
3568         ;;
3569     esac
3570 fi
3571
3572 if test "$cpu" = host; then
3573     enabled cross_compile &&
3574         die "--cpu=host makes no sense when cross-compiling."
3575
3576     case "$cc_type" in
3577         gcc|llvm_gcc)
3578             check_native(){
3579                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3580                 sed -n "/cc1.*$1=/{
3581                             s/.*$1=\\([^ ]*\\).*/\\1/
3582                             p
3583                             q
3584                         }" $TMPE
3585             }
3586             cpu=$(check_native -march || check_native -mcpu)
3587         ;;
3588     esac
3589
3590     test "${cpu:-host}" = host &&
3591         die "--cpu=host not supported with compiler $cc"
3592 fi
3593
3594 # Deal with common $arch aliases
3595 case "$arch" in
3596     aarch64|arm64)
3597         arch="aarch64"
3598     ;;
3599     arm*)
3600         arch="arm"
3601     ;;
3602     mips*|IP*)
3603         case "$arch" in
3604         *el)
3605             add_cppflags -EL
3606             add_ldflags -EL
3607         ;;
3608         *eb)
3609             add_cppflags -EB
3610             add_ldflags -EB
3611         ;;
3612         esac
3613         arch="mips"
3614     ;;
3615     parisc*|hppa*)
3616         arch="parisc"
3617     ;;
3618     "Power Macintosh"|ppc*|powerpc*)
3619         arch="ppc"
3620     ;;
3621     s390|s390x)
3622         arch="s390"
3623     ;;
3624     sh4|sh)
3625         arch="sh4"
3626     ;;
3627     sun4u|sparc*)
3628         arch="sparc"
3629     ;;
3630     tilegx|tile-gx)
3631         arch="tilegx"
3632     ;;
3633     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3634         arch="x86"
3635     ;;
3636 esac
3637
3638 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3639 enable $arch
3640
3641 # Add processor-specific flags
3642 if enabled aarch64; then
3643
3644     case $cpu in
3645         armv*)
3646             cpuflags="-march=$cpu"
3647         ;;
3648         *)
3649             cpuflags="-mcpu=$cpu"
3650         ;;
3651     esac
3652
3653 elif enabled alpha; then
3654
3655     cpuflags="-mcpu=$cpu"
3656
3657 elif enabled arm; then
3658
3659     check_arm_arch() {
3660         check_cpp_condition stddef.h \
3661             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3662             $cpuflags
3663     }
3664
3665     probe_arm_arch() {
3666         if   check_arm_arch 4;        then echo armv4
3667         elif check_arm_arch 4T;       then echo armv4t
3668         elif check_arm_arch 5;        then echo armv5
3669         elif check_arm_arch 5E;       then echo armv5e
3670         elif check_arm_arch 5T;       then echo armv5t
3671         elif check_arm_arch 5TE;      then echo armv5te
3672         elif check_arm_arch 5TEJ;     then echo armv5te
3673         elif check_arm_arch 6;        then echo armv6
3674         elif check_arm_arch 6J;       then echo armv6j
3675         elif check_arm_arch 6K;       then echo armv6k
3676         elif check_arm_arch 6Z;       then echo armv6z
3677         elif check_arm_arch 6ZK;      then echo armv6zk
3678         elif check_arm_arch 6T2;      then echo armv6t2
3679         elif check_arm_arch 7;        then echo armv7
3680         elif check_arm_arch 7A  7_A;  then echo armv7-a
3681         elif check_arm_arch 7S;       then echo armv7-a
3682         elif check_arm_arch 7R  7_R;  then echo armv7-r
3683         elif check_arm_arch 7M  7_M;  then echo armv7-m
3684         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3685         elif check_arm_arch 8A  8_A;  then echo armv8-a
3686         fi
3687     }
3688
3689     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3690
3691     case $cpu in
3692         armv*)
3693             cpuflags="-march=$cpu"
3694             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3695         ;;
3696         *)
3697             cpuflags="-mcpu=$cpu"
3698             case $cpu in
3699                 cortex-a*)                               subarch=armv7a  ;;
3700                 cortex-r*)                               subarch=armv7r  ;;
3701                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3702                 arm11*)                                  subarch=armv6   ;;
3703                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3704                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3705                 *)                             subarch=$(probe_arm_arch) ;;
3706             esac
3707         ;;
3708     esac
3709
3710     case "$subarch" in
3711         armv5t*)    enable fast_clz                ;;
3712         armv[6-8]*) enable fast_clz fast_unaligned ;;
3713     esac
3714
3715 elif enabled avr32; then
3716
3717     case $cpu in
3718         ap7[02]0[0-2])
3719             subarch="avr32_ap"
3720             cpuflags="-mpart=$cpu"
3721         ;;
3722         ap)
3723             subarch="avr32_ap"
3724             cpuflags="-march=$cpu"
3725         ;;
3726         uc3[ab]*)
3727             subarch="avr32_uc"
3728             cpuflags="-mcpu=$cpu"
3729         ;;
3730         uc)
3731             subarch="avr32_uc"
3732             cpuflags="-march=$cpu"
3733         ;;
3734     esac
3735
3736 elif enabled bfin; then
3737
3738     cpuflags="-mcpu=$cpu"
3739
3740 elif enabled mips; then
3741
3742     cpuflags="-march=$cpu"
3743
3744 elif enabled ppc; then
3745
3746     disable ldbrx
3747
3748     case $(tolower $cpu) in
3749         601|ppc601|powerpc601)
3750             cpuflags="-mcpu=601"
3751             disable altivec
3752         ;;
3753         603*|ppc603*|powerpc603*)
3754             cpuflags="-mcpu=603"
3755             disable altivec
3756         ;;
3757         604*|ppc604*|powerpc604*)
3758             cpuflags="-mcpu=604"
3759             disable altivec
3760         ;;
3761         g3|75*|ppc75*|powerpc75*)
3762             cpuflags="-mcpu=750"
3763             disable altivec
3764         ;;
3765         g4|745*|ppc745*|powerpc745*)
3766             cpuflags="-mcpu=7450"
3767             disable vsx
3768         ;;
3769         74*|ppc74*|powerpc74*)
3770             cpuflags="-mcpu=7400"
3771             disable vsx
3772         ;;
3773         g5|970|ppc970|powerpc970)
3774             cpuflags="-mcpu=970"
3775             disable vsx
3776         ;;
3777         power[3-6]*)
3778             cpuflags="-mcpu=$cpu"
3779             disable vsx
3780         ;;
3781         power[7-8]*)
3782             cpuflags="-mcpu=$cpu"
3783             enable ldbrx
3784         ;;
3785         cell)
3786             cpuflags="-mcpu=cell"
3787             enable ldbrx
3788             disable vsx
3789         ;;
3790         e500mc)
3791             cpuflags="-mcpu=e500mc"
3792             disable altivec
3793         ;;
3794         e500v2)
3795             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3796             disable altivec
3797             disable dcbzl
3798         ;;
3799         e500)
3800             cpuflags="-mcpu=8540 -mhard-float"
3801             disable altivec
3802             disable dcbzl
3803         ;;
3804     esac
3805
3806 elif enabled sparc; then
3807
3808     case $cpu in
3809         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3810             cpuflags="-mcpu=$cpu"
3811         ;;
3812         ultrasparc*|niagara[234])
3813             cpuflags="-mcpu=$cpu"
3814         ;;
3815     esac
3816
3817 elif enabled x86; then
3818
3819     case $cpu in
3820         i[345]86|pentium)
3821             cpuflags="-march=$cpu"
3822             disable i686
3823             disable mmx
3824         ;;
3825         # targets that do NOT support nopl and conditional mov (cmov)
3826         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3827             cpuflags="-march=$cpu"
3828             disable i686
3829         ;;
3830         # targets that do support nopl and conditional mov (cmov)
3831         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3832             cpuflags="-march=$cpu"
3833             enable i686
3834             enable fast_cmov
3835         ;;
3836         # targets that do support conditional mov but on which it's slow
3837         pentium4|pentium4m|prescott|nocona)
3838             cpuflags="-march=$cpu"
3839             enable i686
3840             disable fast_cmov
3841         ;;
3842     esac
3843
3844 fi
3845
3846 if [ "$cpu" != generic ]; then
3847     add_cflags  $cpuflags
3848     add_asflags $cpuflags
3849     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3850 fi
3851
3852 # compiler sanity check
3853 check_exec <<EOF
3854 int main(void){ return 0; }
3855 EOF
3856 if test "$?" != 0; then
3857     echo "$cc is unable to create an executable file."
3858     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3859         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3860         echo "Only do this if you know what cross compiling means."
3861     fi
3862     die "C compiler test failed."
3863 fi
3864
3865 add_cppflags -D_ISOC99_SOURCE
3866
3867 # some compilers silently accept -std=c11, so we also need to check that the
3868 # version macro is defined properly
3869 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3870     add_cflags -std=c11 ||
3871     check_cflags -std=c99
3872
3873 check_cppflags -D_FILE_OFFSET_BITS=64
3874 check_cppflags -D_LARGEFILE_SOURCE
3875
3876 add_host_cppflags -D_ISOC99_SOURCE
3877 check_host_cflags -std=c99
3878 check_host_cflags -Wall
3879 check_host_cflags $host_cflags_speed
3880
3881 check_64bit(){
3882     arch32=$1
3883     arch64=$2
3884     expr=$3
3885     check_code cc "" "int test[2*($expr) - 1]" &&
3886         subarch=$arch64 || subarch=$arch32
3887 }
3888
3889 case "$arch" in
3890     aarch64|alpha|ia64)
3891         spic=$shared
3892     ;;
3893     mips)
3894         check_64bit mips mips64 '_MIPS_SIM > 1'
3895         spic=$shared
3896     ;;
3897     parisc)
3898         check_64bit parisc parisc64 'sizeof(void *) > 4'
3899         spic=$shared
3900     ;;
3901     ppc)
3902         check_64bit ppc ppc64 'sizeof(void *) > 4'
3903         spic=$shared
3904     ;;
3905     s390)
3906         check_64bit s390 s390x 'sizeof(void *) > 4'
3907         spic=$shared
3908     ;;
3909     sparc)
3910         check_64bit sparc sparc64 'sizeof(void *) > 4'
3911         spic=$shared
3912     ;;
3913     x86)
3914         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3915         if test "$subarch" = "x86_64"; then
3916             spic=$shared
3917         fi
3918     ;;
3919 esac
3920
3921 enable $subarch
3922 enabled spic && enable_weak pic
3923
3924 enabled x86_64 && objformat=elf64 || objformat="elf32"
3925
3926 # OS specific
3927 case $target_os in
3928     aix)
3929         SHFLAGS=-shared
3930         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3931         enabled shared && add_ldflags -Wl,-brtl
3932         ;;
3933     android)
3934         disable symver
3935         enable section_data_rel_ro
3936         SLIB_INSTALL_NAME='$(SLIBNAME)'
3937         SLIB_INSTALL_LINKS=
3938         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3939         ;;
3940     haiku)
3941         prefix_default="/boot/common"
3942         network_extralibs="-lnetwork"
3943         host_extralibs=
3944         ;;
3945     sunos)
3946         SHFLAGS='-shared -Wl,-h,$$(@F)'
3947         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3948         network_extralibs="-lsocket -lnsl"
3949         # When using suncc to build, the Solaris linker will mark
3950         # an executable with each instruction set encountered by
3951         # the Solaris assembler.  As our libraries contain their own
3952         # guards for processor-specific code, instead suppress
3953         # generation of the HWCAPS ELF section on Solaris x86 only.
3954         enabled_all suncc x86 &&
3955             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3956             add_ldflags -Wl,-M,mapfile
3957         nm_default='nm -P -g'
3958         version_script='-M'
3959         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3960         ;;
3961     netbsd)
3962         disable symver
3963         oss_indev_extralibs="-lossaudio"
3964         oss_outdev_extralibs="-lossaudio"
3965         ;;
3966     openbsd|bitrig)
3967         disable symver
3968         SHFLAGS='-shared'
3969         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3970         SLIB_INSTALL_LINKS=
3971         oss_indev_extralibs="-lossaudio"
3972         oss_outdev_extralibs="-lossaudio"
3973         ;;
3974     dragonfly)
3975         disable symver
3976         ;;
3977     freebsd)
3978         ;;
3979     bsd/os)
3980         add_extralibs -lpoll -lgnugetopt
3981         ;;
3982     darwin)
3983         enabled ppc && add_asflags -force_cpusubtype_ALL
3984         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3985         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3986         add_ldflags -Wl,-dynamic,-search_paths_first
3987         check_cflags -Werror=partial-availability
3988         SLIBSUF=".dylib"
3989         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3990         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3991         enabled x86_64 && objformat="macho64" || objformat="macho32"
3992         enabled_any pic shared ||
3993             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3994         check_header dispatch/dispatch.h &&
3995             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3996         if test -n "$sysroot"; then
3997             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3998             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3999         fi
4000         ;;
4001     msys*)
4002         die "Native MSYS builds are discouraged, please use the MINGW environment."
4003         ;;
4004     mingw32*|mingw64*)
4005         target_os=mingw32
4006         LIBTARGET=i386
4007         if enabled x86_64; then
4008             LIBTARGET="i386:x86-64"
4009         fi
4010         if enabled shared; then
4011             # Cannot build both shared and static libs when using dllexport.
4012             disable static
4013         fi
4014         check_ldflags -Wl,--nxcompat
4015         check_ldflags -Wl,--dynamicbase
4016         shlibdir_default="$bindir_default"
4017         SLIBPREF=""
4018         SLIBSUF=".dll"
4019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4021         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4022         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4023         SLIB_INSTALL_LINKS=
4024         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4025         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4026         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4027         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4028         enabled x86_64 && objformat="win64" || objformat="win32"
4029         dlltool="${cross_prefix}dlltool"
4030         ranlib=:
4031         enable dos_paths
4032         ;;
4033     win32|win64)
4034         disable symver
4035         if enabled shared; then
4036             # Link to the import library instead of the normal static library
4037             # for shared libs.
4038             LD_LIB='%.lib'
4039             # Cannot build both shared and static libs with MSVC or icl.
4040             disable static
4041         fi
4042         shlibdir_default="$bindir_default"
4043         SLIBPREF=""
4044         SLIBSUF=".dll"
4045         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4046         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4047         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4048         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4049         SLIB_INSTALL_LINKS=
4050         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4051         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4052         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4053         enabled x86_64 && objformat="win64" || objformat="win32"
4054         ranlib=:
4055         enable dos_paths
4056         ;;
4057     cygwin*)
4058         target_os=cygwin
4059         shlibdir_default="$bindir_default"
4060         SLIBPREF="cyg"
4061         SLIBSUF=".dll"
4062         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4063         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4064         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4065         SLIB_INSTALL_LINKS=
4066         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4067         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4068         enabled x86_64 && objformat="win64" || objformat="win32"
4069         enable dos_paths
4070         ;;
4071     *-dos|freedos|opendos)
4072         network_extralibs="-lsocket"
4073         objformat="coff"
4074         enable dos_paths
4075         add_cppflags -U__STRICT_ANSI__
4076         ;;
4077     linux)
4078         enable dv1394
4079         enable section_data_rel_ro
4080         ;;
4081     irix*)
4082         target_os=irix
4083         ranlib="echo ignoring ranlib"
4084         ;;
4085     os/2*)
4086         ln_s="cp -f"
4087         objformat="aout"
4088         add_cppflags -D_GNU_SOURCE
4089         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4090         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4091         LIBSUF="_s.a"
4092         SLIBPREF=""
4093         SLIBSUF=".dll"
4094         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4095         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4096         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4097             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4098             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4099             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4100             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4101         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4102             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4103         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4104         enable dos_paths
4105         ;;
4106     gnu/kfreebsd)
4107         add_cppflags -D_BSD_SOURCE
4108         ;;
4109     gnu)
4110         ;;
4111     qnx)
4112         add_cppflags -D_QNX_SOURCE
4113         network_extralibs="-lsocket"
4114         ;;
4115     symbian)
4116         SLIBSUF=".dll"
4117         enable dos_paths
4118         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4119         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4120         add_ldflags -Wl,--target1-abs,--no-undefined \
4121                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4122                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4123         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4124                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4125                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4126         ;;
4127     minix)
4128         ;;
4129     none)
4130         ;;
4131     *)
4132         die "Unknown OS '$target_os'."
4133         ;;
4134 esac
4135
4136 # determine libc flavour
4137
4138 probe_libc(){
4139     pfx=$1
4140     pfx_no_=${pfx%_}
4141     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4142     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4143         eval ${pfx}libc_type=uclibc
4144         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4145     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4146         eval ${pfx}libc_type=glibc
4147         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4148     # MinGW headers can be installed on Cygwin, so check for newlib first.
4149     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4150         eval ${pfx}libc_type=newlib
4151         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4152     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4153     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4154         eval ${pfx}libc_type=mingw64
4155         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4156         eval test \$${pfx_no_}cc_type = "gcc" &&
4157             add_${pfx}cppflags -D__printf__=__gnu_printf__
4158     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4159          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4160         eval ${pfx}libc_type=mingw32
4161         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4162             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4163             die "ERROR: MinGW32 runtime version must be >= 3.15."
4164         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4165         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4166             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4167         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4168             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4169         eval test \$${pfx_no_}cc_type = "gcc" &&
4170             add_${pfx}cppflags -D__printf__=__gnu_printf__
4171     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4172         eval ${pfx}libc_type=msvcrt
4173         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4174             if [ "$pfx" = host_ ]; then
4175                 add_host_cppflags -Dsnprintf=_snprintf
4176             else
4177                 add_compat strtod.o strtod=avpriv_strtod
4178                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4179                                              _snprintf=avpriv_snprintf  \
4180                                              vsnprintf=avpriv_vsnprintf
4181             fi
4182         fi
4183         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4184         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4185         # 0x601 by default unless something else is set by the user.
4186         # This can easily lead to us detecting functions only present
4187         # in such new versions and producing binaries requiring windows 7.0.
4188         # Therefore explicitly set the default to XP unless the user has
4189         # set something else on the command line.
4190         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4191         # family. For these cases, configure is free to use any functions
4192         # found in the SDK headers by default. (Alternatively, we could force
4193         # _WIN32_WINNT to 0x0602 in that case.)
4194         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4195             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4196 #ifdef WINAPI_FAMILY
4197 #include <winapifamily.h>
4198 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4199 #error not desktop
4200 #endif
4201 #endif
4202 EOF
4203         if [ "$pfx" = "" ]; then
4204             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4205         fi
4206     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4207         eval ${pfx}libc_type=klibc
4208     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4209         eval ${pfx}libc_type=bionic
4210     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4211         eval ${pfx}libc_type=solaris
4212         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4213     else
4214         eval ${pfx}libc_type=default
4215         add_${pfx}cppflags -D_DEFAULT_SOURCE
4216     fi
4217 }
4218
4219 probe_libc
4220 test -n "$libc_type" && enable libc_$libc_type
4221 probe_libc host_
4222 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4223
4224 # hacks for compiler/libc/os combinations
4225
4226 case $libc_type in
4227     bionic)
4228         add_compat strtod.o strtod=avpriv_strtod
4229         ;;
4230     glibc)
4231         if enabled tms470; then
4232             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4233             add_cppflags -D__USER_LABEL_PREFIX__=
4234             add_cppflags -D__builtin_memset=memset
4235             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4236             add_cflags   -pds=48    # incompatible redefinition of macro
4237         fi
4238         ;;
4239 esac
4240
4241 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4242     add_cppflags '-I\$(SRC_PATH)/compat/float'
4243
4244 esc(){
4245     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4246 }
4247
4248 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4249
4250 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4251
4252 set_default $PATHS_LIST
4253 set_default nm
4254
4255 # we need to build at least one lib type
4256 if ! enabled_any static shared; then
4257     cat <<EOF
4258 At least one library type must be built.
4259 Specify --enable-static to build the static libraries or --enable-shared to
4260 build the shared libraries as well. To only build the shared libraries specify
4261 --disable-static in addition to --enable-shared.
4262 EOF
4263     exit 1
4264 fi
4265
4266 disabled optimizations || check_cflags -fomit-frame-pointer
4267
4268 enable_weak_pic() {
4269     disabled pic && return
4270     enable pic
4271     add_cppflags -DPIC
4272     case "$target_os" in
4273     mingw*|cygwin*)
4274         ;;
4275     *)
4276         add_cflags -fPIC
4277         ;;
4278     esac
4279     add_asflags  -fPIC
4280 }
4281
4282 enabled pic && enable_weak_pic
4283
4284 check_cc <<EOF || die "Symbol mangling check failed."
4285 int ff_extern;
4286 EOF
4287 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4288 extern_prefix=${sym%%ff_extern*}
4289
4290 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4291
4292 _restrict=
4293 for restrict_keyword in restrict __restrict__ __restrict; do
4294     check_cc <<EOF && _restrict=$restrict_keyword && break
4295 void foo(char * $restrict_keyword p);
4296 EOF
4297 done
4298
4299 check_cc <<EOF && enable pragma_deprecated
4300 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4301 EOF
4302
4303 check_cc <<EOF && enable attribute_packed
4304 struct { int x; } __attribute__((packed)) x;
4305 EOF
4306
4307 check_cc <<EOF && enable attribute_may_alias
4308 union { int x; } __attribute__((may_alias)) x;
4309 EOF
4310
4311 check_cc <<EOF || die "endian test failed"
4312 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4313 EOF
4314 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4315
4316 check_gas() {
4317     log "check_gas using '$as' as AS"
4318     # :vararg is used on aarch64, arm and ppc altivec
4319     check_as <<EOF || return 1
4320 .macro m n, y:vararg=0
4321 \n: .int \y
4322 .endm
4323 m x
4324 EOF
4325     # .altmacro is only used in arm asm
4326     ! enabled arm || check_as <<EOF || return 1
4327 .altmacro
4328 EOF
4329     enable gnu_as
4330     return 0
4331 }
4332
4333 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4334     nogas=:
4335     enabled_any arm aarch64 && nogas=die
4336     enabled_all ppc altivec && nogas=warn
4337     as_noop=-v
4338
4339     case $as_type in
4340         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4341         gcc)  gaspp_as_type=gas ;;
4342         *)    gaspp_as_type=$as_type ;;
4343     esac
4344
4345     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4346
4347     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4348         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4349
4350     if ! check_gas ; then
4351         as=${gas:=$as}
4352         check_gas || \
4353             $nogas "GNU assembler not found, install/update gas-preprocessor"
4354     fi
4355
4356     check_as <<EOF && enable as_func
4357 .func test
4358 .endfunc
4359 EOF
4360 fi
4361
4362 check_inline_asm inline_asm_labels '"1:\n"'
4363
4364 if enabled aarch64; then
4365     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4366     # internal assembler in clang 3.3 does not support this instruction
4367     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4368     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4369
4370     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4371
4372 elif enabled alpha; then
4373
4374     check_cflags -mieee
4375
4376 elif enabled arm; then
4377
4378     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4379     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4380     enabled thumb && check_cflags -mthumb || check_cflags -marm
4381
4382     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4383         enable vfp_args
4384     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4385         enable vfp_args
4386     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4387         case "${cross_prefix:-$cc}" in
4388             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4389             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4390 __asm__ (".eabi_attribute 28, 1");
4391 int main(void) { return 0; }
4392 EOF
4393         esac
4394         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4395     fi
4396
4397     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4398     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4399     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4400     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4401     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4402     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4403
4404     [ $target_os = linux ] || [ $target_os = android ] ||
4405         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4406             $ARCH_EXT_LIST_ARM
4407
4408     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4409
4410     check_as <<EOF && enable as_arch_directive
4411 .arch armv7-a
4412 EOF
4413     check_as <<EOF && enable as_fpu_directive
4414 .fpu neon
4415 EOF
4416
4417     # llvm's integrated assembler supports .object_arch from llvm 3.5
4418     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4419         check_as <<EOF && enable as_object_arch
4420 .object_arch armv4
4421 EOF
4422
4423     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4424
4425 elif enabled mips; then
4426
4427     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4428
4429     # make sure that only an instruction set is enabled
4430     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4431
4432     if enabled mips64; then
4433         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4434             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4435                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4436     else
4437         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4438             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4439                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4440     fi
4441
4442 elif enabled parisc; then
4443
4444     if enabled gcc; then
4445         case $($cc -dumpversion) in
4446             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4447         esac
4448     fi
4449
4450 elif enabled ppc; then
4451
4452     enable local_aligned_8 local_aligned_16 local_aligned_32
4453
4454     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4455     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4456     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4457     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4458
4459     if enabled altivec; then
4460         check_cflags -maltivec -mabi=altivec
4461
4462         # check if our compiler supports Motorola AltiVec C API
4463         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4464                                  vector signed int v2 = (vector signed int) { 1 };
4465                                  v1 = vec_add(v1, v2);" ||
4466             disable altivec
4467
4468         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4469     fi
4470
4471     if enabled vsx; then
4472         check_cflags -mvsx &&
4473         check_code cc altivec.h "int v[4] = { 0 };
4474                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4475             disable vsx
4476     fi
4477
4478     if enabled power8; then
4479         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4480     fi
4481
4482 elif enabled x86; then
4483
4484     check_builtin rdtsc    intrin.h   "__rdtsc()"
4485     check_builtin mm_empty mmintrin.h "_mm_empty()"
4486
4487     enable local_aligned_8 local_aligned_16 local_aligned_32
4488
4489     # check whether EBP is available on x86
4490     # As 'i' is stored on the stack, this program will crash
4491     # if the base pointer is used to access it because the
4492     # base pointer is cleared in the inline assembly code.
4493     check_exec_crash <<EOF && enable ebp_available
4494 volatile int i=0;
4495 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4496 return i;
4497 EOF
4498
4499     # check whether EBX is available on x86
4500     check_inline_asm ebx_available '""::"b"(0)' &&
4501         check_inline_asm ebx_available '"":::"%ebx"'
4502
4503     # check whether xmm clobbers are supported
4504     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4505
4506     # check whether binutils is new enough to compile SSSE3/MMXEXT
4507     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4508     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4509
4510     probe_x86asm(){
4511         x86asmexe_probe=$1
4512         if check_cmd $x86asmexe_probe -v; then
4513             x86asmexe=$x86asmexe_probe
4514             x86asm_type=nasm
4515             x86asm_debug="-g -F dwarf"
4516             X86ASMDEP=
4517             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4518         elif check_cmd $x86asmexe_probe --version; then
4519             x86asmexe=$x86asmexe_probe
4520             x86asm_type=yasm
4521             x86asm_debug="-g dwarf2"
4522             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4523             X86ASM_DEPFLAGS=
4524         fi
4525         check_x86asm "movbe ecx, [5]" && enable x86asm
4526     }
4527
4528     if ! disabled_any asm mmx x86asm; then
4529         disable x86asm
4530         for program in $x86asmexe nasm yasm; do
4531             probe_x86asm $program && break
4532         done
4533         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4534         X86ASMFLAGS="-f $objformat"
4535         enabled pic               && append X86ASMFLAGS "-DPIC"
4536         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4537         case "$objformat" in
4538             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4539         esac
4540
4541         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4542         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4543         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4544         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4545         check_x86asm "CPU amdnop"                      || disable cpunop
4546     fi
4547
4548     case "$cpu" in
4549         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4550             disable fast_clz
4551         ;;
4552     esac
4553
4554 fi
4555
4556 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4557
4558 check_ldflags -Wl,--as-needed
4559
4560 if ! disabled network; then
4561     check_func getaddrinfo $network_extralibs
4562     check_func inet_aton $network_extralibs
4563
4564     check_type netdb.h "struct addrinfo"
4565     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4566     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4567     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4568     check_type poll.h "struct pollfd"
4569     check_type netinet/sctp.h "struct sctp_event_subscribe"
4570     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4571     check_type netinet/in.h "struct sockaddr_in6"
4572     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4573     check_type "sys/types.h sys/socket.h" socklen_t
4574
4575     # Prefer arpa/inet.h over winsock2
4576     if check_header arpa/inet.h ; then
4577         check_func closesocket
4578     elif check_header winsock2.h ; then
4579         check_func_headers winsock2.h closesocket -lws2 &&
4580             network_extralibs="-lws2" ||
4581         { check_func_headers winsock2.h closesocket -lws2_32 &&
4582             network_extralibs="-lws2_32"; } || disable winsock2_h network
4583         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4584
4585         check_type ws2tcpip.h socklen_t
4586         check_type ws2tcpip.h "struct addrinfo"
4587         check_type ws2tcpip.h "struct group_source_req"
4588         check_type ws2tcpip.h "struct ip_mreq_source"
4589         check_type ws2tcpip.h "struct ipv6_mreq"
4590         check_type winsock2.h "struct pollfd"
4591         check_struct winsock2.h "struct sockaddr" sa_len
4592         check_type ws2tcpip.h "struct sockaddr_in6"
4593         check_type ws2tcpip.h "struct sockaddr_storage"
4594     else
4595         disable network
4596     fi
4597 fi
4598
4599 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4600 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4601 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4602 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4603
4604 case "$custom_allocator" in
4605     jemalloc)
4606         # jemalloc by default does not use a prefix
4607         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4608     ;;
4609     tcmalloc)
4610         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4611         malloc_prefix=tc_
4612     ;;
4613 esac
4614
4615 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4616 check_func  ${malloc_prefix}memalign            && enable memalign
4617 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4618
4619 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4620     { check_lib clock_gettime time.h clock_gettime ||
4621       check_lib clock_gettime time.h clock_gettime -lrt; }
4622
4623 check_func  fcntl
4624 check_func  fork
4625 check_func  gethrtime
4626 check_func  getopt
4627 check_func  getrusage
4628 check_func  gettimeofday
4629 check_func  gmtime_r
4630 check_func  isatty
4631 check_func  localtime_r
4632 check_func  mach_absolute_time
4633 check_func  mkstemp
4634 check_func  mmap
4635 check_func  mprotect
4636 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4637 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4638 check_func  sched_getaffinity
4639 check_func  setrlimit
4640 check_func  strerror_r
4641 check_func  sysconf
4642 check_func  sysctl
4643 check_func  usleep
4644
4645 check_func_headers io.h setmode
4646 check_func_headers stdlib.h getenv
4647
4648 check_func_headers windows.h GetProcessAffinityMask
4649 check_func_headers windows.h GetProcessTimes
4650 check_func_headers windows.h GetSystemTimeAsFileTime
4651 check_func_headers windows.h LoadLibrary
4652 check_func_headers windows.h MapViewOfFile
4653 check_func_headers windows.h SetConsoleTextAttribute
4654 check_func_headers windows.h Sleep
4655 check_func_headers windows.h VirtualAlloc
4656 check_struct windows.h "CONDITION_VARIABLE" Ptr
4657
4658 check_header d3d11.h
4659 check_header direct.h
4660 check_header dxgidebug.h
4661 check_header dxva.h
4662 check_header dxva2api.h
4663 check_header io.h
4664 check_header mach/mach_time.h
4665 check_header malloc.h
4666 check_header poll.h
4667 check_header sys/mman.h
4668 check_header sys/param.h
4669 check_header sys/resource.h
4670 check_header sys/select.h
4671 check_header sys/time.h
4672 check_header sys/un.h
4673 check_header unistd.h
4674 check_header valgrind/valgrind.h
4675 check_header VideoDecodeAcceleration/VDADecoder.h
4676 check_header windows.h
4677
4678 # it seems there are versions of clang in some distros that try to use the
4679 # gcc headers, which explodes for stdatomic
4680 # so we also check that atomics actually work here
4681 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4682
4683 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4684 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4685 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4686 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4687
4688 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4689
4690 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4691 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4692 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4693
4694 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4695 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4696 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4697
4698 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4699 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4700 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4701 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4702 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4703 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4704 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4705 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4706 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4707
4708 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4709
4710 if ! disabled w32threads && ! enabled pthreads; then
4711     check_lib w32threads "windows.h process.h" _beginthreadex
4712 fi
4713
4714 # check for some common methods of building with pthread support
4715 # do this before the optional library checks as some of them require pthreads
4716 if ! disabled pthreads && ! enabled w32threads; then
4717     if check_lib pthreads pthread.h pthread_join -pthread; then
4718         add_cflags -pthread
4719     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4720         add_cflags -pthreads
4721     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4722         :
4723     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4724         :
4725     elif check_func pthread_join; then
4726         enable pthreads
4727     fi
4728 fi
4729
4730 enabled pthreads &&
4731     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4732
4733 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4734 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4735
4736 # On some systems dynamic loading requires no extra linker flags
4737 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4738
4739 check_lib libm math.h sin -lm
4740
4741 atan2f_args=2
4742 ldexpf_args=2
4743 powf_args=2
4744
4745 for func in $MATH_FUNCS; do
4746     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4747 done
4748
4749 # these are off by default, so fail if requested and not available
4750 enabled avisynth          && require_header avisynth/avisynth_c.h
4751 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4752 enabled cuda              && require cuda cuda.h cuInit -lcuda
4753 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4754 enabled frei0r            && require_header frei0r.h
4755 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4756 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4757 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4758 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4759 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4760 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4761 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4762 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4763 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4764                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4765                                done || die "ERROR: libgsm not found"; }
4766 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4767 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4768 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4769 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4770 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4771 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4772 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4773 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4774 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4775 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4776 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4777                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4778 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4779 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4780 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4781 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4782 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4783 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4784 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4785 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4786 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4787 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4788 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4789 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4790                              { enabled libvpx_vp8_decoder &&
4791                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4792                                enabled libvpx_vp8_encoder &&
4793                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4794                                enabled libvpx_vp9_decoder &&
4795                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4796                                enabled libvpx_vp9_encoder &&
4797                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4798                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4799                                    die "libvpx enabled but no supported decoders/encoders found"
4800                              }
4801 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4802 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4803 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4804                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4805                              { check_cpp_condition x264.h "X264_MPEG2" &&
4806                                enable libx262; }
4807 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4808                              require_cpp_condition x265.h "X265_BUILD >= 57"
4809 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4810 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4811 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4812                                { ! enabled cross_compile &&
4813                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4814                                  add_ldflags -L/opt/vc/lib/ &&
4815                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4816                                die "ERROR: mmal not found" &&
4817                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4818 enabled omx               && require_header OMX_C