utvideodec: Reuse the huffyuv add_left
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --enable-pic             build position-independent code
290   --enable-thumb           compile for Thumb instruction set
291   --enable-lto             use link-time optimization
292   --env="ENV=override"     override the environment variables
293
294 Advanced options (experts only):
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --custom-allocator=NAME  use a supported custom allocator
297   --disable-symver         disable symbol versioning
298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
299   --disable-safe-bitstream-reader
300                            disable buffer boundary checking in bitreaders
301                            (faster, but may crash)
302   --enable-sram            allow use of on-chip SRAM
303
304 Optimization options (experts only):
305   --disable-asm            disable all assembly optimizations
306   --disable-altivec        disable AltiVec optimizations
307   --disable-vsx            disable VSX optimizations
308   --disable-power8         disable POWER8 optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-xop            disable XOP optimizations
321   --disable-fma3           disable FMA3 optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-inline-asm     disable use of inline assembly
330   --disable-x86asm         disable use of standalone x86 assembly
331
332 Developer options (useful when working on Libav itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --samples=PATH           location of test samples for FATE, if not set use
338                            \$LIBAV_SAMPLES at make invocation time.
339   --enable-neon-clobber-test check NEON registers for clobbering (should be
340                            used only for debugging purposes)
341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
342                            should be used only for debugging purposes)
343   --enable-random          randomly enable/disable components
344   --disable-random
345   --enable-random=LIST     randomly enable/disable specific components or
346   --disable-random=LIST    component groups. LIST is a comma-separated list
347                            of NAME[:PROB] entries where NAME is a component
348                            (group) and PROB the probability associated with
349                            NAME (default 0.5).
350   --random-seed=VALUE      seed value for --enable/disable-random
351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
352                            (only applies to --disable-optimizations builds)
353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
354                            in the name) of tests whose result is ignored
355
356 NOTE: Object files are built at the place where configure is launched.
357 EOF
358   exit 0
359 }
360
361 quotes='""'
362
363 log(){
364     echo "$@" >> $logfile
365 }
366
367 log_file(){
368     log BEGIN $1
369     i=1
370     while read line; do
371         printf '%5s   %s\n' "${i}" "${line}"
372         i=$(($i+1))
373     done < $1 >> $logfile
374     log END $1
375 }
376
377 echolog(){
378     log "$@"
379     echo "$@"
380 }
381
382 warn(){
383     log "WARNING: $*"
384     WARNINGS="${WARNINGS}WARNING: $*\n"
385 }
386
387 die(){
388     echolog "$@"
389     cat <<EOF
390
391 If you think configure made a mistake, make sure you are using the latest
392 version from Git.  If the latest version fails, report the problem to the
393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
394 EOF
395     if disabled logging; then
396         cat <<EOF
397 Rerun configure with logging enabled (do not use --disable-logging), and
398 include the log this produces with your report.
399 EOF
400     else
401         cat <<EOF
402 Include the log file "$logfile" produced by configure as this will help
403 solving the problem.
404 EOF
405     fi
406     exit 1
407 }
408
409 # Avoid locale weirdness, besides we really just want to translate ASCII.
410 toupper(){
411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
412 }
413
414 tolower(){
415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
416 }
417
418 c_escape(){
419     echo "$*" | sed 's/["\\]/\\\0/g'
420 }
421
422 sh_quote(){
423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
425     echo "$v"
426 }
427
428 cleanws(){
429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
430 }
431
432 filter(){
433     pat=$1
434     shift
435     for v; do
436         eval "case $v in $pat) printf '%s ' $v ;; esac"
437     done
438 }
439
440 filter_out(){
441     pat=$1
442     shift
443     for v; do
444         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
445     done
446 }
447
448 map(){
449     m=$1
450     shift
451     for v; do eval $m; done
452 }
453
454 add_suffix(){
455     suffix=$1
456     shift
457     for v; do echo ${v}${suffix}; done
458 }
459
460 set_all(){
461     value=$1
462     shift
463     for var in $*; do
464         eval $var=$value
465     done
466 }
467
468 set_weak(){
469     value=$1
470     shift
471     for var; do
472         eval : \${$var:=$value}
473     done
474 }
475
476 sanitize_var_name(){
477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
478 }
479
480 set_sanitized(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_sanitized(){
487     eval echo \$$(sanitize_var_name "$1")
488 }
489
490 pushvar(){
491     for pvar in $*; do
492         eval level=\${${pvar}_level:=0}
493         eval ${pvar}_${level}="\$$pvar"
494         eval ${pvar}_level=$(($level+1))
495     done
496 }
497
498 popvar(){
499     for pvar in $*; do
500         eval level=\${${pvar}_level:-0}
501         test $level = 0 && continue
502         eval level=$(($level-1))
503         eval $pvar="\${${pvar}_${level}}"
504         eval ${pvar}_level=$level
505         eval unset ${pvar}_${level}
506     done
507 }
508
509 enable(){
510     set_all yes $*
511 }
512
513 disable(){
514     set_all no $*
515 }
516
517 enable_weak(){
518     set_weak yes $*
519 }
520
521 disable_weak(){
522     set_weak no $*
523 }
524
525 enable_sanitized(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_sanitized(){
532     for var; do
533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 do_enable_deep(){
538     for var; do
539         enabled $var && continue
540         eval sel="\$${var}_select"
541         eval sgs="\$${var}_suggest"
542         pushvar var sgs
543         enable_deep $sel
544         popvar sgs
545         enable_deep_weak $sgs
546         popvar var
547     done
548 }
549
550 enable_deep(){
551     do_enable_deep $*
552     enable $*
553 }
554
555 enable_deep_weak(){
556     for var; do
557         disabled $var && continue
558         pushvar var
559         do_enable_deep $var
560         popvar var
561         enable_weak $var
562     done
563 }
564
565 enabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xyes"
568 }
569
570 disabled(){
571     test "${1#!}" = "$1" && op== || op=!=
572     eval test "x\$${1#!}" $op "xno"
573 }
574
575 enabled_all(){
576     for opt; do
577         enabled $opt || return 1
578     done
579 }
580
581 disabled_all(){
582     for opt; do
583         disabled $opt || return 1
584     done
585 }
586
587 enabled_any(){
588     for opt; do
589         enabled $opt && return 0
590     done
591 }
592
593 disabled_any(){
594     for opt; do
595         disabled $opt && return 0
596     done
597     return 1
598 }
599
600 set_default(){
601     for opt; do
602         eval : \${$opt:=\$${opt}_default}
603     done
604 }
605
606 is_in(){
607     value=$1
608     shift
609     for var in $*; do
610         [ $var = $value ] && return 0
611     done
612     return 1
613 }
614
615 check_deps(){
616     for cfg; do
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_con="\$${cfg}_conflict"
625         eval dep_sel="\$${cfg}_select"
626         eval dep_sgs="\$${cfg}_suggest"
627         eval dep_ifa="\$${cfg}_if"
628         eval dep_ifn="\$${cfg}_if_any"
629
630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
633
634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
636         enabled_all  $dep_all || disable $cfg
637         enabled_any  $dep_any || disable $cfg
638         disabled_all $dep_con || disable $cfg
639         disabled_any $dep_sel && disable $cfg
640
641         if enabled $cfg; then
642             enable_deep $dep_sel
643             enable_deep_weak $dep_sgs
644             for dep in $dep_all $dep_any $dep_sgs; do
645                 # filter out library deps, these do not belong in extralibs
646                 is_in $dep $LIBRARY_LIST && continue
647                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
648             done
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 resolve(){
710     var=$1
711     tmpvar=
712     for entry in $(eval echo \$$var); do
713         tmpvar="$tmpvar $(eval echo \$${entry})"
714     done
715     eval "$var=\"${tmpvar}\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cflags_headers(){
727     append CFLAGS_HEADERS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_objcflags(){
735     append OBJCFLAGS $($objcflags_filter "$@")
736 }
737
738 add_ldflags(){
739     append LDFLAGS $($ldflags_filter "$@")
740 }
741
742 add_ldexeflags(){
743     append LDEXEFLAGS $($ldflags_filter "$@")
744 }
745
746 add_stripflags(){
747     append STRIPFLAGS "$@"
748 }
749
750 add_extralibs(){
751     prepend extralibs $($ldflags_filter "$@")
752 }
753
754 add_host_cppflags(){
755     append host_cppflags "$@"
756 }
757
758 add_host_cflags(){
759     append host_cflags $($host_cflags_filter "$@")
760 }
761
762 add_host_ldflags(){
763     append host_ldflags $($host_ldflags_filter "$@")
764 }
765
766 add_compat(){
767     append compat_objs $1
768     shift
769     map 'add_cppflags -D$v' "$@"
770 }
771
772 check_cmd(){
773     log "$@"
774     "$@" >> $logfile 2>&1
775 }
776
777 cc_o(){
778     eval printf '%s\\n' $CC_O
779 }
780
781 cc_e(){
782     eval printf '%s\\n' $CC_E
783 }
784
785 check_cc(){
786     log check_cc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_objcc(){
793     log check_objcc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cpp(){
800     log check_cpp "$@"
801     cat > $TMPC
802     log_file $TMPC
803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
804 }
805
806 as_o(){
807     eval printf '%s\\n' $AS_O
808 }
809
810 check_as(){
811     log check_as "$@"
812     cat > $TMPS
813     log_file $TMPS
814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
815 }
816
817 check_inline_asm(){
818     log check_inline_asm "$@"
819     name="$1"
820     code="$2"
821     shift 2
822     disable $name
823     check_cc "$@" <<EOF && enable $name
824 void foo(void){ __asm__ volatile($code); }
825 EOF
826 }
827
828 check_insn(){
829     log check_insn "$@"
830     check_inline_asm ${1}_inline "\"$2\""
831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
832 }
833
834 check_x86asm(){
835     log check_x86asm "$@"
836     echo "$1" > $TMPS
837     log_file $TMPS
838     shift 1
839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
840 }
841
842 ld_o(){
843     eval printf '%s\\n' $LD_O
844 }
845
846 check_ld(){
847     log check_ld "$@"
848     flags=$(filter_out '-l*' "$@")
849     libs=$(filter '-l*' "$@")
850     check_cc $($cflags_filter $flags) || return
851     flags=$($ldflags_filter $flags)
852     libs=$($ldflags_filter $libs)
853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
854 }
855
856 print_include(){
857     hdr=$1
858     test "${hdr%.h}" = "${hdr}" &&
859         echo "#include $hdr"    ||
860         echo "#include <$hdr>"
861 }
862
863 check_code(){
864     log check_code "$@"
865     check=$1
866     headers=$2
867     code=$3
868     shift 3
869     {
870         for hdr in $headers; do
871             print_include $hdr
872         done
873         echo "int main(void) { $code; return 0; }"
874     } | check_$check "$@"
875 }
876
877 check_cppflags(){
878     log check_cppflags "$@"
879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
880 #include <stdlib.h>;
881 EOF
882 }
883
884 test_cflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_cc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_cflags(){
893     log check_cflags "$@"
894     test_cflags "$@" && add_cflags "$@"
895 }
896
897 test_objcflags(){
898     log test_objcflags "$@"
899     set -- $($objcflags_filter "$@")
900     check_objcc "$@" <<EOF
901 int x;
902 EOF
903 }
904
905 check_objcflags(){
906     log check_objcflags "$@"
907     test_objcflags "$@" && add_objcflags "$@"
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_sanitized $header
941     check_cpp "$@" <<EOF && enable_sanitized $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     check_ld "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return 0; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     check_cpp "$@" <<EOF
994 #include <$header>
995 #if !($condition)
996 #error "unsatisfied condition: $condition"
997 #endif
998 EOF
999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     check_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     altivec_h
1551     arpa_inet_h
1552     cdio_paranoia_h
1553     cdio_paranoia_paranoia_h
1554     d3d11_h
1555     dispatch_dispatch_h
1556     dev_bktr_ioctl_bt848_h
1557     dev_bktr_ioctl_meteor_h
1558     dev_ic_bt8xx_h
1559     dev_video_bktr_ioctl_bt848_h
1560     dev_video_meteor_ioctl_meteor_h
1561     direct_h
1562     dlfcn_h
1563     dxva_h
1564     gsm_h
1565     io_h
1566     mach_mach_time_h
1567     machine_ioctl_bt848_h
1568     machine_ioctl_meteor_h
1569     malloc_h
1570     poll_h
1571     sndio_h
1572     soundcard_h
1573     stdatomic_h
1574     sys_mman_h
1575     sys_param_h
1576     sys_resource_h
1577     sys_select_h
1578     sys_soundcard_h
1579     sys_time_h
1580     sys_un_h
1581     sys_videoio_h
1582     unistd_h
1583     valgrind_valgrind_h
1584     windows_h
1585     winsock2_h
1586 "
1587
1588 INTRINSICS_LIST="
1589     intrinsics_neon
1590 "
1591
1592 MATH_FUNCS="
1593     atanf
1594     atan2f
1595     cbrtf
1596     cosf
1597     exp2
1598     exp2f
1599     expf
1600     isinf
1601     isnan
1602     ldexpf
1603     llrint
1604     llrintf
1605     log2
1606     log2f
1607     log10f
1608     lrint
1609     lrintf
1610     powf
1611     rint
1612     round
1613     roundf
1614     sinf
1615     trunc
1616     truncf
1617 "
1618
1619 SYSTEM_FUNCS="
1620     aligned_malloc
1621     clock_gettime
1622     closesocket
1623     CommandLineToArgvW
1624     CoTaskMemFree
1625     CryptGenRandom
1626     fcntl
1627     flt_lim
1628     fork
1629     getaddrinfo
1630     gethrtime
1631     getopt
1632     GetProcessAffinityMask
1633     GetProcessMemoryInfo
1634     GetProcessTimes
1635     getrusage
1636     GetSystemTimeAsFileTime
1637     gettimeofday
1638     gmtime_r
1639     inet_aton
1640     isatty
1641     LoadLibrary
1642     localtime_r
1643     mach_absolute_time
1644     MapViewOfFile
1645     memalign
1646     mkstemp
1647     mmap
1648     mprotect
1649     nanosleep
1650     posix_memalign
1651     sched_getaffinity
1652     SetConsoleTextAttribute
1653     setmode
1654     setrlimit
1655     Sleep
1656     strerror_r
1657     sysconf
1658     sysctl
1659     usleep
1660     VirtualAlloc
1661 "
1662
1663 TOOLCHAIN_FEATURES="
1664     as_dn_directive
1665     as_fpu_directive
1666     as_func
1667     as_object_arch
1668     asm_mod_q
1669     attribute_may_alias
1670     attribute_packed
1671     blocks_extension
1672     ebp_available
1673     ebx_available
1674     gnu_as
1675     ibm_asm
1676     inline_asm_labels
1677     pragma_deprecated
1678     symver_asm_label
1679     symver_gnu_asm
1680     vfp_args
1681     xform_asm
1682     xmm_clobbers
1683 "
1684
1685 TYPES_LIST="
1686     CONDITION_VARIABLE_Ptr
1687     socklen_t
1688     struct_addrinfo
1689     struct_group_source_req
1690     struct_ip_mreq_source
1691     struct_ipv6_mreq
1692     struct_pollfd
1693     struct_rusage_ru_maxrss
1694     struct_sockaddr_in6
1695     struct_sockaddr_sa_len
1696     struct_sockaddr_storage
1697     struct_v4l2_frmivalenum_discrete
1698 "
1699
1700 HAVE_LIST="
1701     $ARCH_EXT_LIST
1702     $(add_suffix _external $ARCH_EXT_LIST)
1703     $(add_suffix _inline   $ARCH_EXT_LIST)
1704     $ARCH_FEATURES
1705     $BUILTIN_LIST
1706     $HAVE_LIST_CMDLINE
1707     $HAVE_LIST_PUB
1708     $HEADERS_LIST
1709     $INTRINSICS_LIST
1710     $MATH_FUNCS
1711     $SYSTEM_FUNCS
1712     $THREADS_LIST
1713     $TOOLCHAIN_FEATURES
1714     $TYPES_LIST
1715     dos_paths
1716     dxva2_lib
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     vaapi_drm
1723     vaapi_x11
1724     vdpau_x11
1725 "
1726
1727 # options emitted with CONFIG_ prefix but not available on the command line
1728 CONFIG_EXTRA="
1729     aandcttables
1730     ac3dsp
1731     audio_frame_queue
1732     audiodsp
1733     blockdsp
1734     bswapdsp
1735     cabac
1736     dirac_parse
1737     dvprofile
1738     faandct
1739     faanidct
1740     fdctdsp
1741     flacdsp
1742     fmtconvert
1743     g722dsp
1744     gmp
1745     golomb
1746     gplv3
1747     h263dsp
1748     h264chroma
1749     h264dsp
1750     h264parse
1751     h264pred
1752     h264qpel
1753     hevc_ps
1754     hpeldsp
1755     huffman
1756     huffyuvdsp
1757     huffyuvencdsp
1758     idctdsp
1759     iirfilter
1760     imdct15
1761     intrax8
1762     iso_media
1763     ividsp
1764     jpegtables
1765     lgplv3
1766     libx262
1767     libxcb_shape
1768     lpc
1769     lzf
1770     me_cmp
1771     mpeg_er
1772     mpegaudio
1773     mpegaudiodsp
1774     mpegaudioheader
1775     mpegvideo
1776     mpegvideoenc
1777     mss34dsp
1778     pixblockdsp
1779     qpeldsp
1780     qsv
1781     qsvdec
1782     qsvenc
1783     rangecoder
1784     riffdec
1785     riffenc
1786     rtpdec
1787     rtpenc_chain
1788     rv34dsp
1789     sinewin
1790     snappy
1791     srtp
1792     startcode
1793     texturedsp
1794     texturedspenc
1795     tpeldsp
1796     vaapi_encode
1797     vc1dsp
1798     videodsp
1799     vp3dsp
1800     vp56dsp
1801     vp8dsp
1802     wma_freqs
1803     wmv2dsp
1804 "
1805
1806 CMDLINE_SELECT="
1807     $ARCH_EXT_LIST
1808     $CONFIG_LIST
1809     $HAVE_LIST_CMDLINE
1810     $THREADS_LIST
1811     asm
1812     cross_compile
1813     debug
1814     extra_warnings
1815     logging
1816     lto
1817     optimizations
1818     rpath
1819 "
1820
1821 PATHS_LIST="
1822     bindir
1823     datadir
1824     docdir
1825     incdir
1826     libdir
1827     mandir
1828     prefix
1829     shlibdir
1830 "
1831
1832 CMDLINE_SET="
1833     $PATHS_LIST
1834     ar
1835     arch
1836     as
1837     cc
1838     objcc
1839     cpu
1840     cross_prefix
1841     custom_allocator
1842     dep_cc
1843     env
1844     extra_version
1845     host_cc
1846     host_cflags
1847     host_extralibs
1848     host_ld
1849     host_ldflags
1850     host_os
1851     ignore_tests
1852     ld
1853     logfile
1854     malloc_prefix
1855     nm
1856     optflags
1857     pkg_config
1858     pkg_config_flags
1859     random_seed
1860     samples
1861     sysinclude
1862     sysroot
1863     target_exec
1864     target_os
1865     target_path
1866     target_samples
1867     toolchain
1868     x86asmexe
1869 "
1870
1871 CMDLINE_APPEND="
1872     extra_cflags
1873     extra_objcflags
1874     host_cppflags
1875 "
1876
1877 # code dependency declarations
1878
1879 # architecture extensions
1880
1881 armv5te_deps="arm"
1882 armv6_deps="arm"
1883 armv6t2_deps="arm"
1884 armv8_deps="aarch64"
1885 neon_deps_any="aarch64 arm"
1886 intrinsics_neon_deps="neon"
1887 vfp_deps_any="aarch64 arm"
1888 vfpv3_deps="vfp"
1889
1890 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1891
1892 altivec_deps="ppc"
1893 ppc4xx_deps="ppc"
1894 vsx_deps="altivec"
1895 power8_deps="vsx"
1896
1897 cpunop_deps="i686"
1898 x86_64_select="i686"
1899 x86_64_suggest="fast_cmov"
1900
1901 amd3dnow_deps="mmx"
1902 amd3dnowext_deps="amd3dnow"
1903 i686_deps="x86"
1904 mmx_deps="x86"
1905 mmxext_deps="mmx"
1906 sse_deps="mmxext"
1907 sse2_deps="sse"
1908 sse3_deps="sse2"
1909 ssse3_deps="sse3"
1910 sse4_deps="ssse3"
1911 sse42_deps="sse4"
1912 avx_deps="sse42"
1913 xop_deps="avx"
1914 fma3_deps="avx"
1915 fma4_deps="avx"
1916 avx2_deps="avx"
1917
1918 mmx_external_deps="x86asm"
1919 mmx_inline_deps="inline_asm"
1920 mmx_suggest="mmx_external mmx_inline"
1921
1922 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1923     eval dep=\$${ext}_deps
1924     eval ${ext}_external_deps='"${dep}_external"'
1925     eval ${ext}_inline_deps='"${dep}_inline"'
1926     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1927 done
1928
1929 aligned_stack_if_any="aarch64 ppc x86"
1930 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1931 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1932 fast_unaligned_if_any="aarch64 ppc x86"
1933 simd_align_16_if_any="altivec neon sse"
1934 simd_align_32_if_any="avx"
1935
1936 # system capabilities
1937 symver_if_any="symver_asm_label symver_gnu_asm"
1938 valgrind_backtrace_conflict="optimizations"
1939 valgrind_backtrace_deps="valgrind_valgrind_h"
1940
1941 # threading support
1942 atomics_gcc_if="sync_val_compare_and_swap"
1943 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1944 atomics_win32_if="MemoryBarrier"
1945 atomics_native_if_any="$ATOMICS_LIST"
1946 w32threads_deps="atomics_native"
1947 threads_if_any="$THREADS_LIST"
1948
1949 # subsystems
1950 dct_select="rdft"
1951 dirac_parse_select="golomb"
1952 error_resilience_select="me_cmp"
1953 faandct_deps="faan fdctdsp"
1954 faanidct_deps="faan idctdsp"
1955 h264dsp_select="startcode"
1956 hevc_ps_select="golomb"
1957 intrax8_select="blockdsp idctdsp"
1958 mdct_select="fft"
1959 rdft_select="fft"
1960 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1961 mpeg_er_select="error_resilience"
1962 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1963 mpegaudiodsp_select="dct"
1964 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1965 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1966 vc1dsp_select="h264chroma qpeldsp startcode"
1967
1968 # decoders / encoders
1969 aac_decoder_select="imdct15 mdct sinewin"
1970 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1971 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1972 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1973 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1974 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 adpcm_g722_decoder_select="g722dsp"
1976 adpcm_g722_encoder_select="g722dsp"
1977 aic_decoder_select="golomb idctdsp"
1978 alac_encoder_select="lpc"
1979 als_decoder_select="bswapdsp"
1980 amrnb_decoder_select="lsp"
1981 amrwb_decoder_select="lsp"
1982 amv_decoder_select="sp5x_decoder"
1983 ape_decoder_select="bswapdsp"
1984 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1985 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1986 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1987 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1988 atrac1_decoder_select="mdct sinewin"
1989 atrac3_decoder_select="mdct"
1990 atrac3p_decoder_select="mdct sinewin"
1991 bink_decoder_select="blockdsp hpeldsp"
1992 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1993 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1994 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1995 cllc_decoder_select="bswapdsp"
1996 comfortnoise_encoder_select="lpc"
1997 cook_decoder_select="audiodsp mdct sinewin"
1998 cscd_decoder_select="lzo"
1999 cscd_decoder_suggest="zlib"
2000 dca_decoder_select="fmtconvert mdct"
2001 dds_decoder_select="texturedsp"
2002 dnxhd_decoder_select="blockdsp idctdsp"
2003 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2004 dvvideo_decoder_select="dvprofile idctdsp"
2005 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2006 dxa_decoder_deps="zlib"
2007 dxv_decoder_select="lzf texturedsp"
2008 eac3_decoder_select="ac3_decoder"
2009 eac3_encoder_select="ac3_encoder"
2010 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2011 eatgq_decoder_select="aandcttables idctdsp"
2012 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2013 exr_decoder_deps="zlib"
2014 ffv1_decoder_select="rangecoder"
2015 ffv1_encoder_select="rangecoder"
2016 ffvhuff_decoder_select="huffyuv_decoder"
2017 ffvhuff_encoder_select="huffyuv_encoder"
2018 fic_decoder_select="golomb"
2019 flac_decoder_select="flacdsp"
2020 flac_encoder_select="bswapdsp flacdsp lpc"
2021 flashsv_decoder_deps="zlib"
2022 flashsv_encoder_deps="zlib"
2023 flashsv2_decoder_deps="zlib"
2024 flv_decoder_select="h263_decoder"
2025 flv_encoder_select="h263_encoder"
2026 fourxm_decoder_select="blockdsp bswapdsp"
2027 fraps_decoder_select="bswapdsp huffman"
2028 g2m_decoder_deps="zlib"
2029 g2m_decoder_select="blockdsp idctdsp jpegtables"
2030 h261_decoder_select="mpeg_er mpegvideo"
2031 h261_encoder_select="aandcttables mpegvideoenc"
2032 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2033 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2034 h263i_decoder_select="h263_decoder"
2035 h263p_encoder_select="h263_encoder"
2036 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2037 h264_decoder_suggest="error_resilience"
2038 hap_decoder_select="snappy texturedsp"
2039 hap_encoder_deps="libsnappy"
2040 hap_encoder_select="texturedspenc"
2041 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2042 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2043 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2044 iac_decoder_select="imc_decoder"
2045 imc_decoder_select="bswapdsp fft mdct sinewin"
2046 indeo3_decoder_select="hpeldsp"
2047 indeo4_decoder_select="ividsp"
2048 indeo5_decoder_select="ividsp"
2049 interplay_video_decoder_select="hpeldsp"
2050 jpegls_decoder_select="mjpeg_decoder"
2051 jv_decoder_select="blockdsp"
2052 lagarith_decoder_select="huffyuvdsp"
2053 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2054 magicyuv_decoder_select="huffyuvdsp"
2055 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2056 metasound_decoder_select="lsp mdct sinewin"
2057 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2058 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2059 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2060 mjpegb_decoder_select="mjpeg_decoder"
2061 mlp_decoder_select="mlp_parser"
2062 motionpixels_decoder_select="bswapdsp"
2063 mp1_decoder_select="mpegaudio"
2064 mp1float_decoder_select="mpegaudio"
2065 mp2_decoder_select="mpegaudio"
2066 mp2float_decoder_select="mpegaudio"
2067 mp3_decoder_select="mpegaudio"
2068 mp3adu_decoder_select="mpegaudio"
2069 mp3adufloat_decoder_select="mpegaudio"
2070 mp3float_decoder_select="mpegaudio"
2071 mp3on4_decoder_select="mpegaudio"
2072 mp3on4float_decoder_select="mpegaudio"
2073 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2074 mpc8_decoder_select="mpegaudiodsp"
2075 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2076 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2077 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2078 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2079 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2080 mpeg4_encoder_select="h263_encoder"
2081 msa1_decoder_select="mss34dsp"
2082 msmpeg4v1_decoder_select="h263_decoder"
2083 msmpeg4v2_decoder_select="h263_decoder"
2084 msmpeg4v2_encoder_select="h263_encoder"
2085 msmpeg4v3_decoder_select="h263_decoder"
2086 msmpeg4v3_encoder_select="h263_encoder"
2087 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2088 mts2_decoder_select="mss34dsp"
2089 mxpeg_decoder_select="mjpeg_decoder"
2090 nellymoser_decoder_select="mdct sinewin"
2091 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2092 nuv_decoder_select="idctdsp lzo"
2093 on2avc_decoder_select="mdct"
2094 opus_decoder_deps="avresample"
2095 opus_decoder_select="imdct15"
2096 png_decoder_deps="zlib"
2097 png_encoder_deps="zlib"
2098 png_encoder_select="huffyuvencdsp"
2099 prores_decoder_select="idctdsp"
2100 prores_encoder_select="fdctdsp"
2101 qcelp_decoder_select="lsp"
2102 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2103 ra_144_encoder_select="audio_frame_queue lpc"
2104 ralf_decoder_select="golomb"
2105 rscc_decoder_deps="zlib"
2106 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2107 rv10_encoder_select="h263_encoder"
2108 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2109 rv20_encoder_select="h263_encoder"
2110 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2111 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 screenpresso_decoder_deps="zlib"
2113 sipr_decoder_select="lsp"
2114 sp5x_decoder_select="mjpeg_decoder"
2115 svq1_decoder_select="hpeldsp"
2116 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2117 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2118 svq3_decoder_suggest="zlib"
2119 tak_decoder_select="audiodsp"
2120 tdsc_decoder_deps="zlib"
2121 tdsc_decoder_select="mjpeg_decoder"
2122 theora_decoder_select="vp3_decoder"
2123 thp_decoder_select="mjpeg_decoder"
2124 tiff_decoder_suggest="zlib"
2125 tiff_encoder_suggest="zlib"
2126 truehd_decoder_select="mlp_decoder"
2127 truemotion2_decoder_select="bswapdsp"
2128 truespeech_decoder_select="bswapdsp"
2129 tscc_decoder_deps="zlib"
2130 txd_decoder_select="texturedsp"
2131 twinvq_decoder_select="mdct lsp sinewin"
2132 utvideo_decoder_select="bswapdsp huffyuvdsp"
2133 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2134 vble_decoder_select="huffyuvdsp"
2135 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2136 vc1image_decoder_select="vc1_decoder"
2137 vorbis_decoder_select="mdct"
2138 vorbis_encoder_select="mdct"
2139 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2140 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2141 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2142 vp6a_decoder_select="vp6_decoder"
2143 vp6f_decoder_select="vp6_decoder"
2144 vp7_decoder_select="h264pred videodsp vp8dsp"
2145 vp8_decoder_select="h264pred videodsp vp8dsp"
2146 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2147 webp_decoder_select="vp8_decoder"
2148 wmapro_decoder_select="mdct sinewin wma_freqs"
2149 wmav1_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_encoder_select="mdct sinewin wma_freqs"
2151 wmav2_decoder_select="mdct sinewin wma_freqs"
2152 wmav2_encoder_select="mdct sinewin wma_freqs"
2153 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2154 wmv1_decoder_select="h263_decoder"
2155 wmv1_encoder_select="h263_encoder"
2156 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2157 wmv2_encoder_select="h263_encoder wmv2dsp"
2158 wmv3_decoder_select="vc1_decoder"
2159 wmv3image_decoder_select="wmv3_decoder"
2160 zerocodec_decoder_deps="zlib"
2161 zlib_decoder_deps="zlib"
2162 zlib_encoder_deps="zlib"
2163 zmbv_decoder_deps="zlib"
2164 zmbv_encoder_deps="zlib"
2165
2166 # hardware accelerators
2167 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2168 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2169 dxva2_lib_deps="dxva2"
2170 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2171 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2172
2173 h263_vaapi_hwaccel_deps="vaapi"
2174 h263_vaapi_hwaccel_select="h263_decoder"
2175 h264_d3d11va_hwaccel_deps="d3d11va"
2176 h264_d3d11va_hwaccel_select="h264_decoder"
2177 h264_dxva2_hwaccel_deps="dxva2"
2178 h264_dxva2_hwaccel_select="h264_decoder"
2179 h264_mmal_hwaccel_deps="mmal"
2180 h264_qsv_hwaccel_deps="libmfx"
2181 h264_vaapi_hwaccel_deps="vaapi"
2182 h264_vaapi_hwaccel_select="h264_decoder"
2183 h264_vda_hwaccel_deps="vda"
2184 h264_vda_hwaccel_select="h264_decoder"
2185 h264_vda_old_hwaccel_deps="vda"
2186 h264_vda_old_hwaccel_select="h264_decoder"
2187 h264_vdpau_hwaccel_deps="vdpau"
2188 h264_vdpau_hwaccel_select="h264_decoder"
2189 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2190 hevc_d3d11va_hwaccel_select="hevc_decoder"
2191 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2192 hevc_dxva2_hwaccel_select="hevc_decoder"
2193 hevc_qsv_hwaccel_deps="libmfx"
2194 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2195 hevc_vaapi_hwaccel_select="hevc_decoder"
2196 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2197 hevc_vdpau_hwaccel_select="hevc_decoder"
2198 mpeg1_vdpau_hwaccel_deps="vdpau"
2199 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2200 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2201 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2202 mpeg2_dxva2_hwaccel_deps="dxva2"
2203 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2204 mpeg2_mmal_hwaccel_deps="mmal"
2205 mpeg2_qsv_hwaccel_deps="libmfx"
2206 mpeg2_vaapi_hwaccel_deps="vaapi"
2207 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2208 mpeg2_vdpau_hwaccel_deps="vdpau"
2209 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2210 mpeg4_vaapi_hwaccel_deps="vaapi"
2211 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2212 mpeg4_vdpau_hwaccel_deps="vdpau"
2213 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2214 vc1_d3d11va_hwaccel_deps="d3d11va"
2215 vc1_d3d11va_hwaccel_select="vc1_decoder"
2216 vc1_dxva2_hwaccel_deps="dxva2"
2217 vc1_dxva2_hwaccel_select="vc1_decoder"
2218 vc1_mmal_hwaccel_deps="mmal"
2219 vc1_qsv_hwaccel_deps="libmfx"
2220 vc1_vaapi_hwaccel_deps="vaapi"
2221 vc1_vaapi_hwaccel_select="vc1_decoder"
2222 vc1_vdpau_hwaccel_deps="vdpau"
2223 vc1_vdpau_hwaccel_select="vc1_decoder"
2224 vp8_qsv_hwaccel_deps="libmfx"
2225 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2226 vp8_vaapi_hwaccel_select="vp8_decoder"
2227 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2228 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2229 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2230 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2231
2232 # hardware-accelerated codecs
2233 nvenc_deps_any="libdl LoadLibrary"
2234 omx_deps="libdl pthreads"
2235 omx_rpi_select="omx"
2236 qsvdec_select="qsv"
2237 qsvenc_select="qsv"
2238 vaapi_encode_deps="vaapi"
2239
2240 hwupload_cuda_filter_deps="cuda"
2241 scale_npp_filter_deps="cuda libnpp"
2242
2243 h264_mmal_decoder_deps="mmal"
2244 h264_nvenc_encoder_deps="nvenc"
2245 h264_omx_encoder_deps="omx"
2246 h264_qsv_decoder_deps="libmfx"
2247 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2248 h264_qsv_encoder_deps="libmfx"
2249 h264_qsv_encoder_select="qsvenc"
2250 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2251 h264_vaapi_encoder_select="vaapi_encode golomb"
2252 hevc_nvenc_encoder_deps="nvenc"
2253 hevc_qsv_decoder_deps="libmfx"
2254 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2255 hevc_qsv_encoder_deps="libmfx"
2256 hevc_qsv_encoder_select="hevc_ps qsvenc"
2257 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2258 hevc_vaapi_encoder_select="vaapi_encode golomb"
2259 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2260 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2261 mpeg2_mmal_decoder_deps="mmal"
2262 mpeg2_qsv_decoder_deps="libmfx"
2263 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2264 mpeg2_qsv_encoder_deps="libmfx"
2265 mpeg2_qsv_encoder_select="qsvenc"
2266 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2267 mpeg2_vaapi_encoder_select="vaapi_encode"
2268 mpeg4_omx_encoder_deps="omx"
2269 vc1_mmal_decoder_deps="mmal"
2270 vc1_qsv_decoder_deps="libmfx"
2271 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2272 vp8_qsv_decoder_deps="libmfx"
2273 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2274 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2275 vp8_vaapi_encoder_select="vaapi_encode"
2276 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2277 vp9_vaapi_encoder_select="vaapi_encode"
2278
2279 nvenc_h264_encoder_select="h264_nvenc_encoder"
2280 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2281
2282 # parsers
2283 h264_parser_select="golomb h264dsp h264parse"
2284 hevc_parser_select="hevc_ps"
2285 mpegaudio_parser_select="mpegaudioheader"
2286 mpegvideo_parser_select="mpegvideo"
2287 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2288 vc1_parser_select="vc1dsp"
2289
2290 # bitstream_filters
2291 mjpeg2jpeg_bsf_select="jpegtables"
2292
2293 # external libraries
2294 avisynth_deps="LoadLibrary"
2295 avxsynth_deps="libdl"
2296 avisynth_demuxer_deps_any="avisynth avxsynth"
2297 avisynth_demuxer_select="riffdec"
2298 libdcadec_decoder_deps="libdcadec"
2299 libfaac_encoder_deps="libfaac"
2300 libfaac_encoder_select="audio_frame_queue"
2301 libfdk_aac_decoder_deps="libfdk_aac"
2302 libfdk_aac_encoder_deps="libfdk_aac"
2303 libfdk_aac_encoder_select="audio_frame_queue"
2304 libgsm_decoder_deps="libgsm"
2305 libgsm_encoder_deps="libgsm"
2306 libgsm_ms_decoder_deps="libgsm"
2307 libgsm_ms_encoder_deps="libgsm"
2308 libilbc_decoder_deps="libilbc"
2309 libilbc_encoder_deps="libilbc"
2310 libkvazaar_encoder_deps="libkvazaar"
2311 libmp3lame_encoder_deps="libmp3lame"
2312 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2313 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2314 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2315 libopencore_amrnb_encoder_select="audio_frame_queue"
2316 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2317 libopenh264_decoder_deps="libopenh264"
2318 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2319 libopenh264_encoder_deps="libopenh264"
2320 libopenjpeg_decoder_deps="libopenjpeg"
2321 libopenjpeg_encoder_deps="libopenjpeg"
2322 libopus_decoder_deps="libopus"
2323 libopus_encoder_deps="libopus"
2324 libopus_encoder_select="audio_frame_queue"
2325 libschroedinger_decoder_deps="libschroedinger"
2326 libschroedinger_encoder_deps="libschroedinger"
2327 libspeex_decoder_deps="libspeex"
2328 libspeex_encoder_deps="libspeex"
2329 libspeex_encoder_select="audio_frame_queue"
2330 libtheora_encoder_deps="libtheora"
2331 libtwolame_encoder_deps="libtwolame"
2332 libvo_aacenc_encoder_deps="libvo_aacenc"
2333 libvo_aacenc_encoder_select="audio_frame_queue"
2334 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2335 libvorbis_encoder_deps="libvorbis"
2336 libvorbis_encoder_select="audio_frame_queue"
2337 libvpx_vp8_decoder_deps="libvpx"
2338 libvpx_vp8_encoder_deps="libvpx"
2339 libvpx_vp9_decoder_deps="libvpx"
2340 libvpx_vp9_encoder_deps="libvpx"
2341 libwavpack_encoder_deps="libwavpack"
2342 libwavpack_encoder_select="audio_frame_queue"
2343 libwebp_encoder_deps="libwebp"
2344 libx262_encoder_deps="libx262"
2345 libx264_encoder_deps="libx264"
2346 libx265_encoder_deps="libx265"
2347 libxavs_encoder_deps="libxavs"
2348 libxvid_encoder_deps="libxvid mkstemp"
2349
2350 # demuxers / muxers
2351 ac3_demuxer_select="ac3_parser"
2352 asf_demuxer_select="riffdec"
2353 asf_muxer_select="riffenc"
2354 asf_stream_muxer_select="asf_muxer"
2355 avi_demuxer_select="iso_media riffdec"
2356 avi_muxer_select="riffenc"
2357 caf_demuxer_select="iso_media riffdec"
2358 dash_muxer_select="mp4_muxer"
2359 dirac_demuxer_select="dirac_parser"
2360 dv_demuxer_select="dvprofile"
2361 dv_muxer_select="dvprofile"
2362 dxa_demuxer_select="riffdec"
2363 eac3_demuxer_select="ac3_parser"
2364 f4v_muxer_select="mov_muxer"
2365 flac_demuxer_select="flac_parser"
2366 hds_muxer_select="flv_muxer"
2367 hls_muxer_select="mpegts_muxer"
2368 ipod_muxer_select="mov_muxer"
2369 ismv_muxer_select="mov_muxer"
2370 matroska_audio_muxer_select="matroska_muxer"
2371 matroska_demuxer_select="iso_media riffdec"
2372 matroska_demuxer_suggest="bzlib lzo zlib"
2373 matroska_muxer_select="iso_media riffenc"
2374 mmf_muxer_select="riffenc"
2375 mov_demuxer_select="iso_media riffdec"
2376 mov_demuxer_suggest="zlib"
2377 mov_muxer_select="iso_media riffenc rtpenc_chain"
2378 mp3_demuxer_select="mpegaudio_parser"
2379 mp3_muxer_select="mpegaudioheader"
2380 mp4_muxer_select="mov_muxer"
2381 mpegts_demuxer_select="iso_media"
2382 mpegts_muxer_select="adts_muxer latm_muxer"
2383 mpegtsraw_demuxer_select="mpegts_demuxer"
2384 mxf_d10_muxer_select="mxf_muxer"
2385 nut_muxer_select="riffenc"
2386 nuv_demuxer_select="riffdec"
2387 oga_muxer_select="ogg_muxer"
2388 ogg_demuxer_select="dirac_parse"
2389 opus_muxer_select="ogg_muxer"
2390 psp_muxer_select="mov_muxer"
2391 rtp_demuxer_select="sdp_demuxer"
2392 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2393 rtsp_demuxer_select="http_protocol rtpdec"
2394 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2395 sap_demuxer_select="sdp_demuxer"
2396 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2397 sdp_demuxer_select="rtpdec"
2398 smoothstreaming_muxer_select="ismv_muxer"
2399 spdif_muxer_select="aac_parser"
2400 spx_muxer_select="ogg_muxer"
2401 swf_demuxer_suggest="zlib"
2402 tak_demuxer_select="tak_parser"
2403 tg2_muxer_select="mov_muxer"
2404 tgp_muxer_select="mov_muxer"
2405 w64_demuxer_select="wav_demuxer"
2406 wav_demuxer_select="riffdec"
2407 wav_muxer_select="riffenc"
2408 webm_muxer_select="iso_media riffenc"
2409 wtv_demuxer_select="mpegts_demuxer riffdec"
2410 xmv_demuxer_select="riffdec"
2411 xwma_demuxer_select="riffdec"
2412
2413 # indevs / outdevs
2414 alsa_indev_deps="alsa"
2415 alsa_outdev_deps="alsa"
2416 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2417 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2418 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2419 dv1394_indev_deps="dv1394"
2420 dv1394_indev_select="dv_demuxer"
2421 fbdev_indev_deps="linux_fb_h"
2422 jack_indev_deps="libjack"
2423 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2424 libcdio_indev_deps="libcdio"
2425 libdc1394_indev_deps="libdc1394"
2426 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2427 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2428 pulse_indev_deps="libpulse"
2429 sndio_indev_deps="sndio"
2430 sndio_outdev_deps="sndio"
2431 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2432 vfwcap_indev_deps="vfw32 vfwcap_defines"
2433 xcbgrab_indev_deps="libxcb libxcb_shape"
2434 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2435
2436 # protocols
2437 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2438 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2439 ffrtmpcrypt_protocol_select="tcp_protocol"
2440 ffrtmphttp_protocol_conflict="librtmp_protocol"
2441 ffrtmphttp_protocol_select="http_protocol"
2442 gopher_protocol_select="network"
2443 http_protocol_select="tcp_protocol"
2444 httpproxy_protocol_select="tcp_protocol"
2445 https_protocol_select="tls_protocol"
2446 icecast_protocol_select="http_protocol"
2447 librtmp_protocol_deps="librtmp"
2448 librtmpe_protocol_deps="librtmp"
2449 librtmps_protocol_deps="librtmp"
2450 librtmpt_protocol_deps="librtmp"
2451 librtmpte_protocol_deps="librtmp"
2452 mmsh_protocol_select="http_protocol"
2453 mmst_protocol_select="network"
2454 rtmp_protocol_conflict="librtmp_protocol"
2455 rtmp_protocol_select="tcp_protocol"
2456 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2457 rtmps_protocol_conflict="librtmp_protocol"
2458 rtmps_protocol_select="tls_protocol"
2459 rtmpt_protocol_select="ffrtmphttp_protocol"
2460 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2461 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2462 rtp_protocol_select="udp_protocol"
2463 sctp_protocol_deps="struct_sctp_event_subscribe"
2464 sctp_protocol_select="network"
2465 srtp_protocol_select="rtp_protocol srtp"
2466 tcp_protocol_select="network"
2467 tls_gnutls_protocol_deps="gnutls"
2468 tls_gnutls_protocol_select="tcp_protocol"
2469 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2470 tls_openssl_protocol_deps="openssl"
2471 tls_openssl_protocol_select="tcp_protocol"
2472 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2473 udp_protocol_select="network"
2474 unix_protocol_deps="sys_un_h"
2475 unix_protocol_select="network"
2476
2477 # filters
2478 asyncts_filter_deps="avresample"
2479 blackframe_filter_deps="gpl"
2480 boxblur_filter_deps="gpl"
2481 bs2b_filter_deps="libbs2b"
2482 cropdetect_filter_deps="gpl"
2483 deinterlace_qsv_filter_deps="libmfx"
2484 deinterlace_vaapi_filter_deps="vaapi"
2485 delogo_filter_deps="gpl"
2486 drawtext_filter_deps="libfreetype"
2487 drawtext_filter_suggest="libfontconfig"
2488 frei0r_filter_deps="frei0r libdl"
2489 frei0r_src_filter_deps="frei0r libdl"
2490 hdcd_filter_deps="libhdcd"
2491 hqdn3d_filter_deps="gpl"
2492 interlace_filter_deps="gpl"
2493 movie_filter_deps="avcodec avformat"
2494 ocv_filter_deps="libopencv"
2495 resample_filter_deps="avresample"
2496 scale_filter_deps="swscale"
2497 scale_qsv_filter_deps="libmfx"
2498 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2499
2500 # examples
2501 decode_audio_example_deps="avcodec avutil"
2502 decode_video_example_deps="avcodec avutil"
2503 encode_audio_example_deps="avcodec avutil"
2504 encode_video_example_deps="avcodec avutil"
2505 filter_audio_example_deps="avfilter avutil"
2506 metadata_example_deps="avformat avutil"
2507 output_example_deps="avcodec avformat avresample avutil swscale"
2508 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2509 transcode_aac_example_deps="avcodec avformat avresample"
2510
2511 # EXTRALIBS_LIST
2512 cpu_init_extralibs="pthreads_extralibs"
2513 cws2fws_extralibs="zlib_extralibs"
2514
2515 # libraries, in linking order
2516 avcodec_deps="avutil"
2517 avcodec_select="null_bsf"
2518 avdevice_deps="avformat avcodec avutil"
2519 avfilter_deps="avutil"
2520 avformat_deps="avcodec avutil"
2521 avformat_suggest="network"
2522 avresample_deps="avutil"
2523 swscale_deps="avutil"
2524
2525 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2526 avdevice_extralibs="libm_extralibs"
2527 avformat_extralibs="libm_extralibs"
2528 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2529 avresample_extralibs="libm_extralibs"
2530 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2531 swscale_extralibs="libm_extralibs"
2532
2533 # programs
2534 avconv_deps="avcodec avfilter avformat avresample swscale"
2535 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2536                fps_filter null_filter resample_filter scale_filter
2537                trim_filter"
2538 avconv_suggest="dxva2_lib ole32 psapi shell32"
2539 avplay_deps="avcodec avfilter avformat avresample sdl"
2540 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2541 avplay_suggest="shell32"
2542 avprobe_deps="avcodec avformat"
2543 avprobe_suggest="shell32"
2544
2545 # documentation
2546 pod2man_deps="doc"
2547 texi2html_deps="doc"
2548
2549 # default parameters
2550
2551 logfile="avbuild/config.log"
2552
2553 # installation paths
2554 prefix_default="/usr/local"
2555 bindir_default='${prefix}/bin'
2556 datadir_default='${prefix}/share/avconv'
2557 docdir_default='${prefix}/share/doc/libav'
2558 incdir_default='${prefix}/include'
2559 libdir_default='${prefix}/lib'
2560 mandir_default='${prefix}/share/man'
2561 shlibdir_default="$libdir_default"
2562
2563 # toolchain
2564 ar_default="ar"
2565 cc_default="gcc"
2566 host_cc_default="gcc"
2567 x86asmexe_default="nasm"
2568 ln_s="ln -s -f"
2569 nm_default="nm -g"
2570 pkg_config_default=pkg-config
2571 ranlib="ranlib"
2572 strip="strip"
2573 version_script='--version-script'
2574
2575 # machine
2576 arch_default=$(uname -m)
2577 cpu="generic"
2578 intrinsics="none"
2579
2580 # OS
2581 target_os_default=$(tolower $(uname -s))
2582 host_os=$target_os_default
2583
2584 # configurable options
2585 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2586
2587 enable asm
2588 enable debug
2589 enable doc
2590 enable faan faandct faanidct
2591 enable optimizations
2592 enable safe_bitstream_reader
2593 enable static
2594 enable swscale_alpha
2595 enable valgrind_backtrace
2596
2597 # By default, enable only those hwaccels that have no external dependencies.
2598 enable d3d11va dxva2 vda vdpau
2599
2600 # internal components are enabled by default
2601 enable $EXTRALIBS_LIST
2602
2603 # Avoid external, non-system, libraries getting enabled by dependency resolution
2604 disable $EXTERNAL_LIBRARY_LIST
2605
2606 # build settings
2607 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2608 LIBPREF="lib"
2609 LIBSUF=".a"
2610 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2611 SLIBPREF="lib"
2612 SLIBSUF=".so"
2613 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2614 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2615 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2616 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2617 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2618 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2619 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2620
2621 asflags_filter=echo
2622 cflags_filter=echo
2623 ldflags_filter=echo
2624
2625 AS_C='-c'
2626 AS_O='-o $@'
2627 CC_C='-c'
2628 CC_E='-E -o $@'
2629 CC_O='-o $@'
2630 OBJCC_C='-c'
2631 OBJCC_E='-E -o $@'
2632 OBJCC_O='-o $@'
2633 X86ASM_O='-o $@'
2634 LD_O='-o $@'
2635 LD_LIB='-l%'
2636 LD_PATH='-L'
2637 HOSTCC_C='-c'
2638 HOSTCC_E='-E -o $@'
2639 HOSTCC_O='-o $@'
2640 HOSTLD_O='-o $@'
2641
2642 host_extralibs='-lm'
2643 host_cflags_filter=echo
2644 host_ldflags_filter=echo
2645
2646 target_path='$(CURDIR)'
2647
2648 # since the object filename is not given with the -MM flag, the compiler
2649 # is only able to print the basename, and we must add the path ourselves
2650 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2651 DEPFLAGS='-MM'
2652
2653 mkdir -p avbuild
2654
2655 # find source path
2656 if test -f configure; then
2657     source_path=.
2658 else
2659     source_path=$(cd $(dirname "$0"); pwd)
2660     echo "$source_path" | grep -q '[[:blank:]]' &&
2661         die "Out of tree builds are impossible with whitespace in source path."
2662     test -e "$source_path/config.h" &&
2663         die "Out of tree builds are impossible with config.h in source dir."
2664 fi
2665
2666 for v in "$@"; do
2667     r=${v#*=}
2668     l=${v%"$r"}
2669     r=$(sh_quote "$r")
2670     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2671 done
2672
2673 find_things(){
2674     thing=$1
2675     pattern=$2
2676     file=$source_path/$3
2677     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2678 }
2679
2680 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2681 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2682 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2683 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2684 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2685 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2686 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2687 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2688 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2689
2690 find_things_extern(){
2691     thing=$1
2692     pattern=$2
2693     file=$source_path/$3
2694     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2695 }
2696
2697 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2698 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2699
2700 AVCODEC_COMPONENTS_LIST="
2701     $BSF_LIST
2702     $DECODER_LIST
2703     $ENCODER_LIST
2704     $HWACCEL_LIST
2705     $PARSER_LIST
2706 "
2707
2708 AVDEVICE_COMPONENTS_LIST="
2709     $INDEV_LIST
2710     $OUTDEV_LIST
2711 "
2712
2713 AVFILTER_COMPONENTS_LIST="
2714     $FILTER_LIST
2715 "
2716
2717 AVFORMAT_COMPONENTS_LIST="
2718     $DEMUXER_LIST
2719     $MUXER_LIST
2720     $PROTOCOL_LIST
2721 "
2722
2723 ALL_COMPONENTS="
2724     $AVCODEC_COMPONENTS_LIST
2725     $AVDEVICE_COMPONENTS_LIST
2726     $AVFILTER_COMPONENTS_LIST
2727     $AVFORMAT_COMPONENTS_LIST
2728 "
2729
2730 for n in $COMPONENT_LIST; do
2731     v=$(toupper ${n%s})_LIST
2732     eval enable \$$v
2733     eval ${n}_if_any="\$$v"
2734 done
2735
2736 enable $ARCH_EXT_LIST
2737
2738 die_unknown(){
2739     echo "Unknown option \"$1\"."
2740     echo "See $0 --help for available options."
2741     exit 1
2742 }
2743
2744 print_3_columns() {
2745     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2746 }
2747
2748 show_list() {
2749     suffix=_$1
2750     shift
2751     echo $* | sed s/$suffix//g | print_3_columns
2752     exit 0
2753 }
2754
2755 rand_list(){
2756     IFS=', '
2757     set -- $*
2758     unset IFS
2759     for thing; do
2760         comp=${thing%:*}
2761         prob=${thing#$comp}
2762         prob=${prob#:}
2763         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2764         echo "prob ${prob:-0.5}"
2765         printf '%s\n' $comp
2766     done
2767 }
2768
2769 do_random(){
2770     action=$1
2771     shift
2772     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2773     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2774 }
2775
2776 for opt do
2777     optval="${opt#*=}"
2778     case "$opt" in
2779         --extra-ldflags=*)
2780             add_ldflags $optval
2781         ;;
2782         --extra-ldexeflags=*)
2783             add_ldexeflags $optval
2784         ;;
2785         --extra-libs=*)
2786             add_extralibs $optval
2787         ;;
2788         --disable-devices)
2789             disable $INDEV_LIST $OUTDEV_LIST
2790         ;;
2791         --enable-debug=*)
2792             debuglevel="$optval"
2793         ;;
2794         --disable-programs)
2795             disable $PROGRAM_LIST
2796         ;;
2797         --disable-everything)
2798             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2799         ;;
2800         --disable-all)
2801             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2802             disable $LIBRARY_LIST $PROGRAM_LIST doc
2803         ;;
2804         --enable-random|--disable-random)
2805             action=${opt%%-random}
2806             do_random ${action#--} $COMPONENT_LIST
2807         ;;
2808         --enable-random=*|--disable-random=*)
2809             action=${opt%%-random=*}
2810             do_random ${action#--} $optval
2811         ;;
2812         --enable-*=*|--disable-*=*)
2813             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2814             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2815             eval list=\$$(toupper $thing)_LIST
2816             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2817             $action $(filter "$name" $list)
2818         ;;
2819         --enable-avserver|--disable-avserver*)
2820             warn "avserver has been removed, the ${opt} option is only"\
2821                  "provided for compatibility and will be removed in the future"
2822         ;;
2823         --enable-yasm|--disable-yasm)
2824             warn "The ${opt} option is only provided for compatibility and will be\n"\
2825                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2826             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2827         ;;
2828         --enable-?*|--disable-?*)
2829             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2830             if is_in $option $COMPONENT_LIST; then
2831                 test $action = disable && action=unset
2832                 eval $action \$$(toupper ${option%s})_LIST
2833             elif is_in $option $CMDLINE_SELECT; then
2834                 $action $option
2835             else
2836                 die_unknown $opt
2837             fi
2838         ;;
2839         --list-*)
2840             NAME="${opt#--list-}"
2841             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2842             NAME=${NAME%s}
2843             eval show_list $NAME \$$(toupper $NAME)_LIST
2844         ;;
2845         --help|-h) show_help
2846         ;;
2847         --quiet|-q) quiet=yes
2848         ;;
2849         *)
2850             optname="${opt%%=*}"
2851             optname="${optname#--}"
2852             optname=$(echo "$optname" | sed 's/-/_/g')
2853             if is_in $optname $CMDLINE_SET; then
2854                 eval $optname='$optval'
2855             elif is_in $optname $CMDLINE_APPEND; then
2856                 append $optname "$optval"
2857             else
2858                 die_unknown $opt
2859             fi
2860         ;;
2861     esac
2862 done
2863
2864 for e in $env; do
2865     eval "export $e"
2866 done
2867
2868 disabled logging && logfile=/dev/null
2869
2870 # Die early if licensing-related configure options are incompatible.
2871 die_license_disabled() {
2872     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2873 }
2874
2875 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2876 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2877 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2878
2879 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2880
2881 # Disable all the library-specific components if the library itself
2882 # is disabled, see AVCODEC_LIST and following _LIST variables.
2883
2884 disable_components(){
2885     disabled ${1} && disable $(
2886         eval components="\$$(toupper ${1})_COMPONENTS"
2887         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2888     )
2889 }
2890
2891 map 'disable_components $v' $LIBRARY_LIST
2892
2893 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2894 set >> $logfile
2895
2896 case "$toolchain" in
2897     *-asan)
2898         cc_default="${toolchain%-asan}"
2899         add_cflags  -fsanitize=address
2900         add_ldflags -fsanitize=address
2901     ;;
2902     *-msan)
2903         cc_default="${toolchain%-msan}"
2904         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2905         add_ldflags -fsanitize=memory
2906     ;;
2907     *-tsan)
2908         cc_default="${toolchain%-tsan}"
2909         add_cflags  -fsanitize=thread -fPIE
2910         add_ldflags -fsanitize=thread -pie
2911         case "$toolchain" in
2912             gcc-tsan)
2913                 add_cflags  -fPIC
2914                 add_ldflags -fPIC
2915                 ;;
2916         esac
2917     ;;
2918     *-usan)
2919         cc_default="${toolchain%-usan}"
2920         add_cflags  -fsanitize=undefined
2921         add_ldflags -fsanitize=undefined
2922         case "$toolchain" in
2923             clang-usan)
2924                 add_cflags -O1
2925                 ;;
2926         esac
2927     ;;
2928     valgrind-*)
2929         target_exec_default="valgrind"
2930         case "$toolchain" in
2931             valgrind-massif)
2932                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2933                 ;;
2934             valgrind-memcheck)
2935                 target_exec_args="--track-origins=yes --leak-check=full"
2936                 ;;
2937         esac
2938     ;;
2939     msvc)
2940         # Check whether the current MSVC version needs the C99 converter.
2941         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2942         # support enough of C99 to build libav. Default to the new
2943         # behaviour if the regexp was unable to match anything, since this
2944         # successfully parses the version number of existing supported
2945         # versions that require the converter (MSVC 2010 and 2012).
2946         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2947         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2948             cc_default="cl"
2949         else
2950             cc_default="c99wrap cl"
2951         fi
2952         ld_default="$source_path/compat/windows/mslink"
2953         nm_default="dumpbin -symbols"
2954         ar_default="lib"
2955         case "$arch" in
2956         arm*)
2957             as_default="armasm"
2958             ;;
2959         esac
2960         target_os_default="win32"
2961         # Use a relative path for TMPDIR. This makes sure all the
2962         # ffconf temp files are written with a relative path, avoiding
2963         # issues with msys/win32 path conversion for MSVC parameters
2964         # such as -Fo<file> or -out:<file>.
2965         TMPDIR=.
2966     ;;
2967     icl)
2968         cc_default="icl"
2969         ld_default="xilink"
2970         nm_default="dumpbin -symbols"
2971         ar_default="xilib"
2972         target_os_default="win32"
2973         TMPDIR=.
2974     ;;
2975     gcov)
2976         add_cflags  -fprofile-arcs -ftest-coverage
2977         add_ldflags -fprofile-arcs -ftest-coverage
2978     ;;
2979     llvm-cov)
2980         add_cflags -fprofile-arcs -ftest-coverage
2981         add_ldflags --coverage
2982     ;;
2983     hardened)
2984         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2985         add_cflags   -fno-strict-overflow -fstack-protector-all
2986         add_ldflags  -Wl,-z,relro -Wl,-z,now
2987     ;;
2988     ?*)
2989         die "Unknown toolchain $toolchain"
2990     ;;
2991 esac
2992
2993 test -n "$cross_prefix" && enable cross_compile
2994
2995 if enabled cross_compile; then
2996     test -n "$arch" && test -n "$target_os" ||
2997         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2998 fi
2999
3000 ar_default="${cross_prefix}${ar_default}"
3001 cc_default="${cross_prefix}${cc_default}"
3002 objcc_default="${cross_prefix}${objcc_default}"
3003 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3004 nm_default="${cross_prefix}${nm_default}"
3005 pkg_config_default="${cross_prefix}${pkg_config_default}"
3006 ranlib="${cross_prefix}${ranlib}"
3007 strip="${cross_prefix}${strip}"
3008
3009 sysinclude_default="${sysroot}/usr/include"
3010
3011 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3012 enabled cross_compile || host_cc_default=$cc
3013 set_default host_cc
3014
3015 if ! $pkg_config --version >/dev/null 2>&1; then
3016     warn "$pkg_config not found, library detection may fail."
3017     pkg_config=false
3018 fi
3019
3020 exesuf() {
3021     case $1 in
3022         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3023     esac
3024 }
3025
3026 EXESUF=$(exesuf $target_os)
3027 HOSTEXESUF=$(exesuf $host_os)
3028
3029 # set temporary file name
3030 : ${TMPDIR:=$TEMPDIR}
3031 : ${TMPDIR:=$TMP}
3032 : ${TMPDIR:=/tmp}
3033
3034 if ! check_cmd mktemp -u XXXXXX; then
3035     # simple replacement for missing mktemp
3036     # NOT SAFE FOR GENERAL USE
3037     mktemp(){
3038         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3039         echo "$tmpname"
3040         mkdir "$tmpname"
3041     }
3042 fi
3043
3044 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3045     die "Unable to create temporary directory in $TMPDIR."
3046
3047 tmpfile(){
3048     tmp="${AVTMPDIR}/test"$2
3049     (set -C; exec > $tmp) 2> /dev/null ||
3050         die "Unable to create temporary file in $AVTMPDIR."
3051     eval $1=$tmp
3052 }
3053
3054 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3055 trap 'exit 2' INT
3056
3057 tmpfile TMPASM .asm
3058 tmpfile TMPC   .c
3059 tmpfile TMPE   $EXESUF
3060 tmpfile TMPH   .h
3061 tmpfile TMPO   .o
3062 tmpfile TMPS   .S
3063 tmpfile TMPSH  .sh
3064 tmpfile TMPV   .ver
3065
3066 unset -f mktemp
3067
3068 chmod +x $TMPE
3069
3070 # make sure we can execute files in $TMPDIR
3071 cat > $TMPSH 2>> $logfile <<EOF
3072 #! /bin/sh
3073 EOF
3074 chmod +x $TMPSH >> $logfile 2>&1
3075 if ! $TMPSH >> $logfile 2>&1; then
3076     cat <<EOF
3077 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3078 variable to another directory and make sure that it is not mounted noexec.
3079 EOF
3080     die "Sanity test failed."
3081 fi
3082
3083 armasm_flags(){
3084     for flag; do
3085         case $flag in
3086             # Filter out MSVC cl.exe options from cflags that shouldn't
3087             # be passed to gas-preprocessor
3088             -M[TD]*)                                            ;;
3089             *)                  echo $flag                      ;;
3090         esac
3091    done
3092 }
3093
3094 ccc_flags(){
3095     for flag; do
3096         case $flag in
3097             -std=c99)           echo -c99                       ;;
3098             -mcpu=*)            echo -arch ${flag#*=}           ;;
3099             -mieee)             echo -ieee                      ;;
3100             -O*|-fast)          echo $flag                      ;;
3101             -fno-math-errno)    echo -assume nomath_errno       ;;
3102             -g)                 echo -g3                        ;;
3103             -Wall)              echo -msg_enable level2         ;;
3104             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3105             -Wl,*)              echo $flag                      ;;
3106             -f*|-W*)                                            ;;
3107             *)                  echo $flag                      ;;
3108         esac
3109    done
3110 }
3111
3112 cparser_flags(){
3113     for flag; do
3114         case $flag in
3115             -Wno-switch)             echo -Wno-switch-enum ;;
3116             -Wno-format-zero-length) ;;
3117             -Wdisabled-optimization) ;;
3118             -Wno-pointer-sign)       echo -Wno-other ;;
3119             *)                       echo $flag ;;
3120         esac
3121     done
3122 }
3123
3124 msvc_common_flags(){
3125     for flag; do
3126         case $flag in
3127             # In addition to specifying certain flags under the compiler
3128             # specific filters, they must be specified here as well or else the
3129             # generic catch all at the bottom will print the original flag.
3130             -Wall)                ;;
3131             -Wextra)              ;;
3132             -std=c99)             ;;
3133             # Common flags
3134             -fomit-frame-pointer) ;;
3135             -g)                   echo -Z7 ;;
3136             -fno-math-errno)      ;;
3137             -fno-common)          ;;
3138             -fno-signed-zeros)    ;;
3139             -fPIC)                ;;
3140             -mthumb)              ;;
3141             -march=*)             ;;
3142             -lz)                  echo zlib.lib ;;
3143             -lx264)               echo libx264.lib ;;
3144             -l*)                  echo ${flag#-l}.lib ;;
3145             -L*)                  echo -libpath:${flag#-L} ;;
3146             *)                    echo $flag ;;
3147         esac
3148     done
3149 }
3150
3151 msvc_flags(){
3152     msvc_common_flags "$@"
3153     for flag; do
3154         case $flag in
3155             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3156                                        -wd4554 ;;
3157             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3158                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3159                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3160                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3161         esac
3162     done
3163 }
3164
3165 icl_flags(){
3166     msvc_common_flags "$@"
3167     for flag; do
3168         case $flag in
3169             # Despite what Intel's documentation says -Wall, which is supported
3170             # on Windows, does enable remarks so disable them here.
3171             -Wall)                echo $flag -Qdiag-disable:remark ;;
3172             -std=c99)             echo -Qstd=c99 ;;
3173         esac
3174     done
3175 }
3176
3177 pgi_flags(){
3178     for flag; do
3179         case $flag in
3180             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3181             -fomit-frame-pointer) echo -Mnoframe ;;
3182             -g)                   echo -gopt ;;
3183             *)                    echo $flag ;;
3184         esac
3185     done
3186 }
3187
3188 suncc_flags(){
3189     for flag; do
3190         case $flag in
3191             -march=*|-mcpu=*)
3192                 case "${flag#*=}" in
3193                     native)                   echo -xtarget=native       ;;
3194                     v9|niagara)               echo -xarch=sparc          ;;
3195                     ultrasparc)               echo -xarch=sparcvis       ;;
3196                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3197                     i586|pentium)             echo -xchip=pentium        ;;
3198                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3199                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3200                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3201                     pentium4*)          echo -xtarget=pentium4           ;;
3202                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3203                     *-sse3)             echo -xarch=sse3                 ;;
3204                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3205                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3206                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3207                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3208                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3209                     k8|opteron|athlon64|athlon-fx)
3210                                                echo -xarch=sse2a         ;;
3211                     athlon*)                   echo -xarch=pentium_proa  ;;
3212                 esac
3213                 ;;
3214             -std=c99)             echo -xc99              ;;
3215             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3216             -fPIC)                echo -KPIC -xcode=pic32 ;;
3217             -W*,*)                echo $flag              ;;
3218             -f*-*|-W*|-mimpure-text)                      ;;
3219             -shared)              echo -G                 ;;
3220             *)                    echo $flag              ;;
3221         esac
3222     done
3223 }
3224
3225 tms470_flags(){
3226     for flag; do
3227         case $flag in
3228             -march=*|-mcpu=*)
3229                 case "${flag#*=}" in
3230                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3231                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3232                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3233                     armv6*|arm11*)          echo -mv=6   ;;
3234                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3235                                             echo -mv=5e  ;;
3236                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3237                 esac
3238                 ;;
3239             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3240             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3241             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3242             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3243             -msoft-float)   echo --float_support=vfplib       ;;
3244             -O[0-3]|-mf=*)  echo $flag                        ;;
3245             -g)             echo -g -mn                       ;;
3246             -pds=*)         echo $flag                        ;;
3247             -D*|-I*)        echo $flag                        ;;
3248             --gcc|--abi=*)  echo $flag                        ;;
3249             -me)            echo $flag                        ;;
3250         esac
3251     done
3252 }
3253
3254 probe_cc(){
3255     pfx=$1
3256     _cc=$2
3257
3258     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3259     unset _ld_o _ldflags _ld_lib _ld_path
3260     unset _depflags _DEPCMD _DEPFLAGS
3261     _flags_filter=echo
3262
3263     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3264         _type=llvm_gcc
3265         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3266         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3267         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3268         _cflags_speed='-O3'
3269         _cflags_size='-Os'
3270     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3271         _type=gcc
3272         gcc_version=$($_cc --version | head -n1)
3273         gcc_basever=$($_cc -dumpversion)
3274         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3275         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3276         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3277         if ! $_cc -dumpversion | grep -q '^2\.'; then
3278             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3279         fi
3280         _cflags_speed='-O3'
3281         _cflags_size='-Os'
3282     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3283         _type=icc
3284         _ident=$($_cc --version | head -n1)
3285         _depflags='-MMD'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288         _cflags_noopt='-O1'
3289     elif $_cc -v 2>&1 | grep -q xlc; then
3290         _type=xlc
3291         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3292         _cflags_speed='-O5'
3293         _cflags_size='-O5 -qcompact'
3294     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3295         _type=ccc
3296         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3297         _DEPFLAGS='-M'
3298         _cflags_speed='-fast'
3299         _cflags_size='-O1'
3300         _flags_filter=ccc_flags
3301     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3302         test -d "$sysroot" || die "No valid sysroot specified."
3303         _type=armcc
3304         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3305         armcc_conf="$PWD/armcc.conf"
3306         $_cc --arm_linux_configure                 \
3307              --arm_linux_config_file="$armcc_conf" \
3308              --configure_sysroot="$sysroot"        \
3309              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3310              die "Error creating armcc configuration file."
3311         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3312         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3313         as_default="${cross_prefix}gcc"
3314         _depflags='-MMD'
3315         _cflags_speed='-O3'
3316         _cflags_size='-Os'
3317     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3318         _type=tms470
3319         _ident=$($_cc -version | head -n1 | tr -s ' ')
3320         _flags='--gcc --abi=eabi -me'
3321         _cc_e='-ppl -fe=$@'
3322         _cc_o='-fe=$@'
3323         _depflags='-ppa -ppd=$(@:.o=.d)'
3324         _cflags_speed='-O3 -mf=5'
3325         _cflags_size='-O3 -mf=2'
3326         _flags_filter=tms470_flags
3327     elif $_cc -v 2>&1 | grep -q clang; then
3328         _type=clang
3329         _ident=$($_cc --version 2>/dev/null | head -n1)
3330         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3331         _cflags_speed='-O3'
3332         _cflags_size='-Os'
3333     elif $_cc -V 2>&1 | grep -q Sun; then
3334         _type=suncc
3335         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3336         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3337         _DEPFLAGS='-xM1 -xc99'
3338         _ldflags='-std=c99'
3339         _cflags_speed='-O5'
3340         _cflags_size='-O5 -xspace'
3341         _flags_filter=suncc_flags
3342     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3343         _type=pathscale
3344         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3346         _cflags_speed='-O2'
3347         _cflags_size='-Os'
3348         _flags_filter='filter_out -Wdisabled-optimization'
3349     elif $_cc -v 2>&1 | grep -q Open64; then
3350         _type=open64
3351         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3352         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3353         _cflags_speed='-O2'
3354         _cflags_size='-Os'
3355         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3356     elif $_cc -V 2>&1 | grep -q Portland; then
3357         _type=pgi
3358         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3359         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3360         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3361         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3362         _cflags_noopt="-O1"
3363         _flags_filter=pgi_flags
3364     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3365         _type=armasm
3366         _ident=$($_cc | head -n1)
3367         # 4509: "This form of conditional instruction is deprecated"
3368         _flags="-nologo -ignore 4509"
3369         _flags_filter=armasm_flags
3370     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3371         _type=msvc
3372         _ident=$($_cc 2>&1 | head -n1)
3373         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3374         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3375         _cflags_speed="-O2"
3376         _cflags_size="-O1"
3377         _cflags_noopt="-O1"
3378         if $_cc -nologo- 2>&1 | grep -q Linker; then
3379             _ld_o='-out:$@'
3380         else
3381             _ld_o='-Fe$@'
3382         fi
3383         _cc_o='-Fo$@'
3384         _cc_e='-P -Fi$@'
3385         _flags_filter=msvc_flags
3386         _ld_lib='lib%.a'
3387         _ld_path='-libpath:'
3388         _flags='-nologo'
3389     elif $_cc 2>&1 | grep -q Intel; then
3390         _type=icl
3391         _ident=$($_cc 2>&1 | head -n1)
3392         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3393         # Not only is O3 broken on 13.x+ but it is slower on all previous
3394         # versions (tested) as well.
3395         _cflags_speed="-O2"
3396         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3397         if $_cc 2>&1 | grep -q Linker; then
3398             _ld_o='-out:$@'
3399         else
3400             _ld_o='-Fe$@'
3401         fi
3402         _cc_o='-Fo$@'
3403         _cc_e='-P'
3404         _flags_filter=icl_flags
3405         _ld_lib='lib%.a'
3406         _ld_path='-libpath:'
3407         # -Qdiag-error to make icl error when seeing certain unknown arguments
3408         _flags='-nologo -Qdiag-error:4044,10157'
3409         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3410         # with MSVC which enables it by default.
3411         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3412     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3413         # lld can emulate multiple different linkers; in ms link.exe mode,
3414         # the -? parameter gives the help output which contains an identifyable
3415         # string, while it gives an error in other modes.
3416         _type=lld-link
3417         # The link.exe mode doesn't have a switch for getting the version,
3418         # but we can force it back to gnu mode and get the version from there.
3419         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3420         _ld_o='-out:$@'
3421         _flags_filter=msvc_flags
3422         _ld_lib='lib%.a'
3423         _ld_path='-libpath:'
3424     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3425         _type=cparser
3426         _ident=$($_cc --version | head -n1)
3427         _depflags='-MMD'
3428         _cflags_speed='-O4'
3429         _cflags_size='-O2'
3430         _flags_filter=cparser_flags
3431     fi
3432
3433     eval ${pfx}_type=\$_type
3434     eval ${pfx}_ident=\$_ident
3435 }
3436
3437 set_ccvars(){
3438     eval ${1}_C=\${_cc_c-\${${1}_C}}
3439     eval ${1}_E=\${_cc_e-\${${1}_E}}
3440     eval ${1}_O=\${_cc_o-\${${1}_O}}
3441
3442     if [ -n "$_depflags" ]; then
3443         eval ${1}_DEPFLAGS=\$_depflags
3444     else
3445         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3446         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3447         eval DEP${1}FLAGS=\$_flags
3448     fi
3449 }
3450
3451 probe_cc cc "$cc"
3452 cflags_filter=$_flags_filter
3453 cflags_speed=$_cflags_speed
3454 cflags_size=$_cflags_size
3455 cflags_noopt=$_cflags_noopt
3456 add_cflags $_flags $_cflags
3457 cc_ldflags=$_ldflags
3458 set_ccvars CC
3459
3460 probe_cc hostcc "$host_cc"
3461 host_cflags_filter=$_flags_filter
3462 host_cflags_speed=$_cflags_speed
3463 add_host_cflags  $_flags $_cflags
3464 set_ccvars HOSTCC
3465
3466 test -n "$cc_type" && enable $cc_type ||
3467     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3468
3469 : ${as_default:=$cc}
3470 : ${objcc_default:=$cc}
3471 : ${dep_cc_default:=$cc}
3472 : ${ld_default:=$cc}
3473 : ${host_ld_default:=$host_cc}
3474 set_default ar as objcc dep_cc ld host_ld
3475
3476 probe_cc as "$as"
3477 asflags_filter=$_flags_filter
3478 add_asflags $_flags $_cflags
3479 set_ccvars AS
3480
3481 probe_cc objcc "$objcc"
3482 objcflags_filter=$_flags_filter
3483 add_objcflags $_flags $_cflags
3484 set_ccvars OBJC
3485
3486 probe_cc ld "$ld"
3487 ldflags_filter=$_flags_filter
3488 add_ldflags $_flags $_ldflags
3489 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3490 LD_O=${_ld_o-$LD_O}
3491 LD_LIB=${_ld_lib-$LD_LIB}
3492 LD_PATH=${_ld_path-$LD_PATH}
3493
3494 probe_cc hostld "$host_ld"
3495 host_ldflags_filter=$_flags_filter
3496 add_host_ldflags $_flags $_ldflags
3497 HOSTLD_O=${_ld_o-$HOSTLD_O}
3498
3499 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3500     probe_cc depcc "$dep_cc"
3501     CCDEP=${_DEPCMD:-$DEPCMD}
3502     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3503     DEPCCFLAGS=$_flags
3504 fi
3505
3506 if $ar 2>&1 | grep -q Microsoft; then
3507     arflags="-nologo"
3508     ar_o='-out:$@'
3509 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3510     arflags="rq"
3511     ar_o='$@'
3512 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3513     arflags='-Xany -r -c'
3514     ar_o='$@'
3515 else
3516     arflags="rc"
3517     ar_o='$@'
3518 fi
3519
3520 add_cflags $extra_cflags
3521 add_objcflags $extra_objcflags
3522 add_asflags $extra_cflags
3523
3524 if test -n "$sysroot"; then
3525     case "$cc_type" in
3526         gcc|llvm_gcc|clang)
3527             add_cppflags --sysroot="$sysroot"
3528             add_ldflags --sysroot="$sysroot"
3529         ;;
3530         tms470)
3531             add_cppflags -I"$sysinclude"
3532             add_ldflags  --sysroot="$sysroot"
3533         ;;
3534     esac
3535 fi
3536
3537 if test "$cpu" = host; then
3538     enabled cross_compile &&
3539         die "--cpu=host makes no sense when cross-compiling."
3540
3541     case "$cc_type" in
3542         gcc|llvm_gcc)
3543             check_native(){
3544                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3545                 sed -n "/cc1.*$1=/{
3546                             s/.*$1=\\([^ ]*\\).*/\\1/
3547                             p
3548                             q
3549                         }" $TMPE
3550             }
3551             cpu=$(check_native -march || check_native -mcpu)
3552         ;;
3553     esac
3554
3555     test "${cpu:-host}" = host &&
3556         die "--cpu=host not supported with compiler $cc"
3557 fi
3558
3559 # Deal with common $arch aliases
3560 case "$arch" in
3561     aarch64|arm64)
3562         arch="aarch64"
3563     ;;
3564     arm*)
3565         arch="arm"
3566     ;;
3567     mips*|IP*)
3568         case "$arch" in
3569         *el)
3570             add_cppflags -EL
3571             add_ldflags -EL
3572         ;;
3573         *eb)
3574             add_cppflags -EB
3575             add_ldflags -EB
3576         ;;
3577         esac
3578         arch="mips"
3579     ;;
3580     parisc*|hppa*)
3581         arch="parisc"
3582     ;;
3583     "Power Macintosh"|ppc*|powerpc*)
3584         arch="ppc"
3585     ;;
3586     s390|s390x)
3587         arch="s390"
3588     ;;
3589     sh4|sh)
3590         arch="sh4"
3591     ;;
3592     sun4u|sparc*)
3593         arch="sparc"
3594     ;;
3595     tilegx|tile-gx)
3596         arch="tilegx"
3597     ;;
3598     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3599         arch="x86"
3600     ;;
3601 esac
3602
3603 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3604 enable $arch
3605
3606 # Add processor-specific flags
3607 if enabled aarch64; then
3608
3609     case $cpu in
3610         armv*)
3611             cpuflags="-march=$cpu"
3612         ;;
3613         *)
3614             cpuflags="-mcpu=$cpu"
3615         ;;
3616     esac
3617
3618 elif enabled alpha; then
3619
3620     cpuflags="-mcpu=$cpu"
3621
3622 elif enabled arm; then
3623
3624     check_arm_arch() {
3625         check_cpp_condition stddef.h \
3626             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3627             $cpuflags
3628     }
3629
3630     probe_arm_arch() {
3631         if   check_arm_arch 4;        then echo armv4
3632         elif check_arm_arch 4T;       then echo armv4t
3633         elif check_arm_arch 5;        then echo armv5
3634         elif check_arm_arch 5E;       then echo armv5e
3635         elif check_arm_arch 5T;       then echo armv5t
3636         elif check_arm_arch 5TE;      then echo armv5te
3637         elif check_arm_arch 5TEJ;     then echo armv5te
3638         elif check_arm_arch 6;        then echo armv6
3639         elif check_arm_arch 6J;       then echo armv6j
3640         elif check_arm_arch 6K;       then echo armv6k
3641         elif check_arm_arch 6Z;       then echo armv6z
3642         elif check_arm_arch 6ZK;      then echo armv6zk
3643         elif check_arm_arch 6T2;      then echo armv6t2
3644         elif check_arm_arch 7;        then echo armv7
3645         elif check_arm_arch 7A  7_A;  then echo armv7-a
3646         elif check_arm_arch 7S;       then echo armv7-a
3647         elif check_arm_arch 7R  7_R;  then echo armv7-r
3648         elif check_arm_arch 7M  7_M;  then echo armv7-m
3649         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3650         elif check_arm_arch 8A  8_A;  then echo armv8-a
3651         fi
3652     }
3653
3654     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3655
3656     case $cpu in
3657         armv*)
3658             cpuflags="-march=$cpu"
3659             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3660         ;;
3661         *)
3662             cpuflags="-mcpu=$cpu"
3663             case $cpu in
3664                 cortex-a*)                               subarch=armv7a  ;;
3665                 cortex-r*)                               subarch=armv7r  ;;
3666                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3667                 arm11*)                                  subarch=armv6   ;;
3668                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3669                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3670                 *)                             subarch=$(probe_arm_arch) ;;
3671             esac
3672         ;;
3673     esac
3674
3675     case "$subarch" in
3676         armv5t*)    enable fast_clz                ;;
3677         armv[6-8]*) enable fast_clz fast_unaligned ;;
3678     esac
3679
3680 elif enabled avr32; then
3681
3682     case $cpu in
3683         ap7[02]0[0-2])
3684             subarch="avr32_ap"
3685             cpuflags="-mpart=$cpu"
3686         ;;
3687         ap)
3688             subarch="avr32_ap"
3689             cpuflags="-march=$cpu"
3690         ;;
3691         uc3[ab]*)
3692             subarch="avr32_uc"
3693             cpuflags="-mcpu=$cpu"
3694         ;;
3695         uc)
3696             subarch="avr32_uc"
3697             cpuflags="-march=$cpu"
3698         ;;
3699     esac
3700
3701 elif enabled bfin; then
3702
3703     cpuflags="-mcpu=$cpu"
3704
3705 elif enabled mips; then
3706
3707     cpuflags="-march=$cpu"
3708
3709 elif enabled ppc; then
3710
3711     disable ldbrx
3712
3713     case $(tolower $cpu) in
3714         601|ppc601|powerpc601)
3715             cpuflags="-mcpu=601"
3716             disable altivec
3717         ;;
3718         603*|ppc603*|powerpc603*)
3719             cpuflags="-mcpu=603"
3720             disable altivec
3721         ;;
3722         604*|ppc604*|powerpc604*)
3723             cpuflags="-mcpu=604"
3724             disable altivec
3725         ;;
3726         g3|75*|ppc75*|powerpc75*)
3727             cpuflags="-mcpu=750"
3728             disable altivec
3729         ;;
3730         g4|745*|ppc745*|powerpc745*)
3731             cpuflags="-mcpu=7450"
3732             disable vsx
3733         ;;
3734         74*|ppc74*|powerpc74*)
3735             cpuflags="-mcpu=7400"
3736             disable vsx
3737         ;;
3738         g5|970|ppc970|powerpc970)
3739             cpuflags="-mcpu=970"
3740             disable vsx
3741         ;;
3742         power[3-6]*)
3743             cpuflags="-mcpu=$cpu"
3744             disable vsx
3745         ;;
3746         power[7-8]*)
3747             cpuflags="-mcpu=$cpu"
3748             enable ldbrx
3749         ;;
3750         cell)
3751             cpuflags="-mcpu=cell"
3752             enable ldbrx
3753             disable vsx
3754         ;;
3755         e500mc)
3756             cpuflags="-mcpu=e500mc"
3757             disable altivec
3758         ;;
3759         e500v2)
3760             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3761             disable altivec
3762             disable dcbzl
3763         ;;
3764         e500)
3765             cpuflags="-mcpu=8540 -mhard-float"
3766             disable altivec
3767             disable dcbzl
3768         ;;
3769     esac
3770
3771 elif enabled sparc; then
3772
3773     case $cpu in
3774         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3775             cpuflags="-mcpu=$cpu"
3776         ;;
3777         ultrasparc*|niagara[234])
3778             cpuflags="-mcpu=$cpu"
3779         ;;
3780     esac
3781
3782 elif enabled x86; then
3783
3784     case $cpu in
3785         i[345]86|pentium)
3786             cpuflags="-march=$cpu"
3787             disable i686
3788             disable mmx
3789         ;;
3790         # targets that do NOT support nopl and conditional mov (cmov)
3791         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3792             cpuflags="-march=$cpu"
3793             disable i686
3794         ;;
3795         # targets that do support nopl and conditional mov (cmov)
3796         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3797             cpuflags="-march=$cpu"
3798             enable i686
3799             enable fast_cmov
3800         ;;
3801         # targets that do support conditional mov but on which it's slow
3802         pentium4|pentium4m|prescott|nocona)
3803             cpuflags="-march=$cpu"
3804             enable i686
3805             disable fast_cmov
3806         ;;
3807     esac
3808
3809 fi
3810
3811 if [ "$cpu" != generic ]; then
3812     add_cflags  $cpuflags
3813     add_asflags $cpuflags
3814     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3815 fi
3816
3817 # compiler sanity check
3818 check_exec <<EOF
3819 int main(void){ return 0; }
3820 EOF
3821 if test "$?" != 0; then
3822     echo "$cc is unable to create an executable file."
3823     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3824         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3825         echo "Only do this if you know what cross compiling means."
3826     fi
3827     die "C compiler test failed."
3828 fi
3829
3830 add_cppflags -D_ISOC99_SOURCE
3831
3832 # some compilers silently accept -std=c11, so we also need to check that the
3833 # version macro is defined properly
3834 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3835     add_cflags -std=c11 ||
3836     check_cflags -std=c99
3837
3838 check_cppflags -D_FILE_OFFSET_BITS=64
3839 check_cppflags -D_LARGEFILE_SOURCE
3840
3841 add_host_cppflags -D_ISOC99_SOURCE
3842 check_host_cflags -std=c99
3843 check_host_cflags -Wall
3844 check_host_cflags $host_cflags_speed
3845
3846 check_64bit(){
3847     arch32=$1
3848     arch64=$2
3849     expr=$3
3850     check_code cc "" "int test[2*($expr) - 1]" &&
3851         subarch=$arch64 || subarch=$arch32
3852 }
3853
3854 case "$arch" in
3855     aarch64|alpha|ia64)
3856         spic=$shared
3857     ;;
3858     mips)
3859         check_64bit mips mips64 '_MIPS_SIM > 1'
3860         spic=$shared
3861     ;;
3862     parisc)
3863         check_64bit parisc parisc64 'sizeof(void *) > 4'
3864         spic=$shared
3865     ;;
3866     ppc)
3867         check_64bit ppc ppc64 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     s390)
3871         check_64bit s390 s390x 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     sparc)
3875         check_64bit sparc sparc64 'sizeof(void *) > 4'
3876         spic=$shared
3877     ;;
3878     x86)
3879         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3880         if test "$subarch" = "x86_64"; then
3881             spic=$shared
3882         fi
3883     ;;
3884 esac
3885
3886 enable $subarch
3887 enabled spic && enable_weak pic
3888
3889 enabled x86_64 && objformat=elf64 || objformat="elf32"
3890
3891 # OS specific
3892 case $target_os in
3893     aix)
3894         SHFLAGS=-shared
3895         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3896         enabled shared && add_ldflags -Wl,-brtl
3897         ;;
3898     android)
3899         disable symver
3900         enable section_data_rel_ro
3901         SLIB_INSTALL_NAME='$(SLIBNAME)'
3902         SLIB_INSTALL_LINKS=
3903         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3904         ;;
3905     haiku)
3906         prefix_default="/boot/common"
3907         network_extralibs="-lnetwork"
3908         host_extralibs=
3909         ;;
3910     sunos)
3911         SHFLAGS='-shared -Wl,-h,$$(@F)'
3912         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3913         network_extralibs="-lsocket -lnsl"
3914         # When using suncc to build, the Solaris linker will mark
3915         # an executable with each instruction set encountered by
3916         # the Solaris assembler.  As our libraries contain their own
3917         # guards for processor-specific code, instead suppress
3918         # generation of the HWCAPS ELF section on Solaris x86 only.
3919         enabled_all suncc x86 &&
3920             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3921             add_ldflags -Wl,-M,mapfile
3922         nm_default='nm -P -g'
3923         version_script='-M'
3924         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3925         ;;
3926     netbsd)
3927         disable symver
3928         oss_indev_extralibs="-lossaudio"
3929         oss_outdev_extralibs="-lossaudio"
3930         ;;
3931     openbsd|bitrig)
3932         disable symver
3933         SHFLAGS='-shared'
3934         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3935         SLIB_INSTALL_LINKS=
3936         oss_indev_extralibs="-lossaudio"
3937         oss_outdev_extralibs="-lossaudio"
3938         ;;
3939     dragonfly)
3940         disable symver
3941         ;;
3942     freebsd)
3943         ;;
3944     bsd/os)
3945         add_extralibs -lpoll -lgnugetopt
3946         ;;
3947     darwin)
3948         enabled ppc && add_asflags -force_cpusubtype_ALL
3949         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3950         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3951         add_ldflags -Wl,-dynamic,-search_paths_first
3952         check_cflags -Werror=partial-availability
3953         SLIBSUF=".dylib"
3954         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3955         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3956         enabled x86_64 && objformat="macho64" || objformat="macho32"
3957         enabled_any pic shared ||
3958             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3959         check_header dispatch/dispatch.h &&
3960             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3961         ;;
3962     msys*)
3963         die "Native MSYS builds are discouraged, please use the MINGW environment."
3964         ;;
3965     mingw32*|mingw64*)
3966         if test $target_os = "mingw32ce"; then
3967             disable network
3968         else
3969             target_os=mingw32
3970         fi
3971         LIBTARGET=i386
3972         if enabled x86_64; then
3973             LIBTARGET="i386:x86-64"
3974         elif enabled arm; then
3975             LIBTARGET=arm-wince
3976         fi
3977         check_ldflags -Wl,--nxcompat
3978         check_ldflags -Wl,--dynamicbase
3979         shlibdir_default="$bindir_default"
3980         SLIBPREF=""
3981         SLIBSUF=".dll"
3982         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3983         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3984         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3985         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3986         SLIB_INSTALL_LINKS=
3987         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3988         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3989         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3990         enabled x86_64 && objformat="win64" || objformat="win32"
3991         dlltool="${cross_prefix}dlltool"
3992         ranlib=:
3993         enable dos_paths
3994         ;;
3995     win32|win64)
3996         disable symver
3997         if enabled shared; then
3998             # Link to the import library instead of the normal static library
3999             # for shared libs.
4000             LD_LIB='%.lib'
4001             # Cannot build both shared and static libs with MSVC or icl.
4002             disable static
4003         fi
4004         shlibdir_default="$bindir_default"
4005         SLIBPREF=""
4006         SLIBSUF=".dll"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4009         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_LINKS=
4012         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4013         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4014         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4015         enabled x86_64 && objformat="win64" || objformat="win32"
4016         ranlib=:
4017         enable dos_paths
4018         ;;
4019     cygwin*)
4020         target_os=cygwin
4021         shlibdir_default="$bindir_default"
4022         SLIBPREF="cyg"
4023         SLIBSUF=".dll"
4024         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4025         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4026         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4027         SLIB_INSTALL_LINKS=
4028         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4029         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4030         enabled x86_64 && objformat="win64" || objformat="win32"
4031         enable dos_paths
4032         ;;
4033     *-dos|freedos|opendos)
4034         network_extralibs="-lsocket"
4035         objformat="coff"
4036         enable dos_paths
4037         add_cppflags -U__STRICT_ANSI__
4038         ;;
4039     linux)
4040         enable dv1394
4041         enable section_data_rel_ro
4042         ;;
4043     irix*)
4044         target_os=irix
4045         ranlib="echo ignoring ranlib"
4046         ;;
4047     os/2*)
4048         ln_s="cp -f"
4049         objformat="aout"
4050         add_cppflags -D_GNU_SOURCE
4051         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4052         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4053         LIBSUF="_s.a"
4054         SLIBPREF=""
4055         SLIBSUF=".dll"
4056         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4057         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4058         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4059             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4060             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4061             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4062             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4063         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4064             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4065         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4066         enable dos_paths
4067         ;;
4068     gnu/kfreebsd)
4069         add_cppflags -D_BSD_SOURCE
4070         ;;
4071     gnu)
4072         ;;
4073     qnx)
4074         add_cppflags -D_QNX_SOURCE
4075         network_extralibs="-lsocket"
4076         ;;
4077     symbian)
4078         SLIBSUF=".dll"
4079         enable dos_paths
4080         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4081         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4082         add_ldflags -Wl,--target1-abs,--no-undefined \
4083                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4084                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4085         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4086                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4087                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4088         ;;
4089     osf1)
4090         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4091         ;;
4092     minix)
4093         ;;
4094     none)
4095         ;;
4096     *)
4097         die "Unknown OS '$target_os'."
4098         ;;
4099 esac
4100
4101 # determine libc flavour
4102
4103 probe_libc(){
4104     pfx=$1
4105     pfx_no_=${pfx%_}
4106     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4107     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4108         eval ${pfx}libc_type=uclibc
4109         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4110     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4111         eval ${pfx}libc_type=glibc
4112         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4113     # MinGW headers can be installed on Cygwin, so check for newlib first.
4114     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4115         eval ${pfx}libc_type=newlib
4116         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4117     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4118     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4119         eval ${pfx}libc_type=mingw64
4120         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4121         eval test \$${pfx_no_}cc_type = "gcc" &&
4122             add_${pfx}cppflags -D__printf__=__gnu_printf__
4123     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4124          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4125         eval ${pfx}libc_type=mingw32
4126         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4127             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4128             die "ERROR: MinGW32 runtime version must be >= 3.15."
4129         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4130         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4131             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4132         eval test \$${pfx_no_}cc_type = "gcc" &&
4133             add_${pfx}cppflags -D__printf__=__gnu_printf__
4134     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4135         eval ${pfx}libc_type=msvcrt
4136         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4137             if [ "$pfx" = host_ ]; then
4138                 add_host_cppflags -Dsnprintf=_snprintf
4139             else
4140                 add_compat strtod.o strtod=avpriv_strtod
4141                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4142                                              _snprintf=avpriv_snprintf  \
4143                                              vsnprintf=avpriv_vsnprintf
4144             fi
4145         fi
4146         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4147         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4148         # 0x601 by default unless something else is set by the user.
4149         # This can easily lead to us detecting functions only present
4150         # in such new versions and producing binaries requiring windows 7.0.
4151         # Therefore explicitly set the default to XP unless the user has
4152         # set something else on the command line.
4153         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4154         # family. For these cases, configure is free to use any functions
4155         # found in the SDK headers by default. (Alternatively, we could force
4156         # _WIN32_WINNT to 0x0602 in that case.)
4157         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4158             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4159 #ifdef WINAPI_FAMILY
4160 #include <winapifamily.h>
4161 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4162 #error not desktop
4163 #endif
4164 #endif
4165 EOF
4166         if [ "$pfx" = "" ]; then
4167             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4168         fi
4169     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4170         eval ${pfx}libc_type=klibc
4171     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4172         eval ${pfx}libc_type=bionic
4173     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4174         eval ${pfx}libc_type=solaris
4175         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4176     else
4177         eval ${pfx}libc_type=default
4178         add_${pfx}cppflags -D_DEFAULT_SOURCE
4179     fi
4180 }
4181
4182 probe_libc
4183 test -n "$libc_type" && enable libc_$libc_type
4184 probe_libc host_
4185 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4186
4187 # hacks for compiler/libc/os combinations
4188
4189 case $libc_type in
4190     bionic)
4191         add_compat strtod.o strtod=avpriv_strtod
4192         ;;
4193     glibc)
4194         if enabled tms470; then
4195             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4196             add_cppflags -D__USER_LABEL_PREFIX__=
4197             add_cppflags -D__builtin_memset=memset
4198             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4199             add_cflags   -pds=48    # incompatible redefinition of macro
4200         elif enabled ccc; then
4201             add_ldflags -Wl,-z,now  # calls to libots crash without this
4202         fi
4203         ;;
4204 esac
4205
4206 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4207     add_cppflags '-I\$(SRC_PATH)/compat/float'
4208
4209 esc(){
4210     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4211 }
4212
4213 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4214
4215 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4216
4217 set_default $PATHS_LIST
4218 set_default nm
4219
4220 # we need to build at least one lib type
4221 if ! enabled_any static shared; then
4222     cat <<EOF
4223 At least one library type must be built.
4224 Specify --enable-static to build the static libraries or --enable-shared to
4225 build the shared libraries as well. To only build the shared libraries specify
4226 --disable-static in addition to --enable-shared.
4227 EOF
4228     exit 1
4229 fi
4230
4231 disabled optimizations || check_cflags -fomit-frame-pointer
4232
4233 enable_weak_pic() {
4234     disabled pic && return
4235     enable pic
4236     add_cppflags -DPIC
4237     case "$target_os" in
4238     mingw*|cygwin*)
4239         ;;
4240     *)
4241         add_cflags -fPIC
4242         ;;
4243     esac
4244     add_asflags  -fPIC
4245 }
4246
4247 enabled pic && enable_weak_pic
4248
4249 check_cc <<EOF || die "Symbol mangling check failed."
4250 int ff_extern;
4251 EOF
4252 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4253 extern_prefix=${sym%%ff_extern*}
4254
4255 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4256
4257 _restrict=
4258 for restrict_keyword in restrict __restrict__ __restrict; do
4259     check_cc <<EOF && _restrict=$restrict_keyword && break
4260 void foo(char * $restrict_keyword p);
4261 EOF
4262 done
4263
4264 check_cc <<EOF && enable pragma_deprecated
4265 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4266 EOF
4267
4268 check_cc <<EOF && enable attribute_packed
4269 struct { int x; } __attribute__((packed)) x;
4270 EOF
4271
4272 check_cc <<EOF && enable attribute_may_alias
4273 union { int x; } __attribute__((may_alias)) x;
4274 EOF
4275
4276 check_cc <<EOF || die "endian test failed"
4277 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4278 EOF
4279 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4280
4281 check_gas() {
4282     log "check_gas using '$as' as AS"
4283     # :vararg is used on aarch64, arm and ppc altivec
4284     check_as <<EOF || return 1
4285 .macro m n, y:vararg=0
4286 \n: .int \y
4287 .endm
4288 m x
4289 EOF
4290     # .altmacro is only used in arm asm
4291     ! enabled arm || check_as <<EOF || return 1
4292 .altmacro
4293 EOF
4294     enable gnu_as
4295     return 0
4296 }
4297
4298 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4299     nogas=:
4300     enabled_any arm aarch64 && nogas=die
4301     enabled_all ppc altivec && nogas=warn
4302     as_noop=-v
4303
4304     case $as_type in
4305         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4306         gcc)  gaspp_as_type=gas ;;
4307         *)    gaspp_as_type=$as_type ;;
4308     esac
4309
4310     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4311
4312     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4313         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4314
4315     if ! check_gas ; then
4316         as=${gas:=$as}
4317         check_gas || \
4318             $nogas "GNU assembler not found, install/update gas-preprocessor"
4319     fi
4320
4321     check_as <<EOF && enable as_func
4322 .func test
4323 .endfunc
4324 EOF
4325 fi
4326
4327 check_inline_asm inline_asm_labels '"1:\n"'
4328
4329 if enabled aarch64; then
4330     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4331     # internal assembler in clang 3.3 does not support this instruction
4332     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4333     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4334
4335     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4336
4337 elif enabled alpha; then
4338
4339     check_cflags -mieee
4340
4341 elif enabled arm; then
4342
4343     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4344     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4345     enabled thumb && check_cflags -mthumb || check_cflags -marm
4346
4347     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4348         enable vfp_args
4349     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4350         enable vfp_args
4351     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4352         case "${cross_prefix:-$cc}" in
4353             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4354             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4355 __asm__ (".eabi_attribute 28, 1");
4356 int main(void) { return 0; }
4357 EOF
4358         esac
4359         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4360     fi
4361
4362     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4363     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4364     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4365     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4366     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4367     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4368
4369     [ $target_os = linux ] || [ $target_os = android ] ||
4370         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4371             $ARCH_EXT_LIST_ARM
4372
4373     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4374
4375     check_as <<EOF && enable as_dn_directive
4376 ra .dn d0.i16
4377 .unreq ra
4378 EOF
4379     check_as <<EOF && enable as_fpu_directive
4380 .fpu neon
4381 EOF
4382
4383     # llvm's integrated assembler supports .object_arch from llvm 3.5
4384     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4385         check_as <<EOF && enable as_object_arch
4386 .object_arch armv4
4387 EOF
4388
4389     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4390
4391 elif enabled mips; then
4392
4393     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4394
4395     # make sure that only an instruction set is enabled
4396     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4397
4398     if enabled mips64; then
4399         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4400             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4401                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4402     else
4403         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4404             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4405                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4406     fi
4407
4408 elif enabled parisc; then
4409
4410     if enabled gcc; then
4411         case $($cc -dumpversion) in
4412             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4413         esac
4414     fi
4415
4416 elif enabled ppc; then
4417
4418     enable local_aligned_8 local_aligned_16 local_aligned_32
4419
4420     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4421     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4422     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4423     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4424
4425     # AltiVec flags: The FSF version of GCC differs from the Apple version
4426     if enabled altivec; then
4427         check_cflags -maltivec -mabi=altivec &&
4428         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4429         check_cflags -faltivec
4430
4431         # check if our compiler supports Motorola AltiVec C API
4432         check_cc <<EOF || disable altivec
4433 $inc_altivec_h
4434 int main(void) {
4435     vector signed int v1 = (vector signed int) { 0 };
4436     vector signed int v2 = (vector signed int) { 1 };
4437     v1 = vec_add(v1, v2);
4438     return 0;
4439 }
4440 EOF
4441
4442         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4443     fi
4444
4445     if enabled vsx; then
4446         check_cflags -mvsx &&
4447         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4448     fi
4449
4450     if enabled power8; then
4451         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4452     fi
4453
4454 elif enabled x86; then
4455
4456     check_builtin rdtsc    intrin.h   "__rdtsc()"
4457     check_builtin mm_empty mmintrin.h "_mm_empty()"
4458
4459     enable local_aligned_8 local_aligned_16 local_aligned_32
4460
4461     # check whether EBP is available on x86
4462     # As 'i' is stored on the stack, this program will crash
4463     # if the base pointer is used to access it because the
4464     # base pointer is cleared in the inline assembly code.
4465     check_exec_crash <<EOF && enable ebp_available
4466 volatile int i=0;
4467 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4468 return i;
4469 EOF
4470
4471     # check whether EBX is available on x86
4472     check_inline_asm ebx_available '""::"b"(0)' &&
4473         check_inline_asm ebx_available '"":::"%ebx"'
4474
4475     # check whether xmm clobbers are supported
4476     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4477
4478     # check whether binutils is new enough to compile SSSE3/MMXEXT
4479     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4480     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4481
4482     probe_x86asm(){
4483         x86asmexe_probe=$1
4484         if check_cmd $x86asmexe_probe -v; then
4485             x86asmexe=$x86asmexe_probe
4486             x86asm_type=nasm
4487             x86asm_debug="-g -F dwarf"
4488             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4489         elif check_cmd $x86asmexe_probe --version; then
4490             x86asmexe=$x86asmexe_probe
4491             x86asm_type=yasm
4492             x86asm_debug="-g dwarf2"
4493             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4494         fi
4495     }
4496
4497     if ! disabled_any asm mmx x86asm; then
4498         for program in $x86asmexe nasm yasm; do
4499             probe_x86asm $program
4500             test -n "$x86asm_type" && break
4501         done
4502         X86ASMFLAGS="-f $objformat"
4503         enabled pic               && append X86ASMFLAGS "-DPIC"
4504         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4505         case "$objformat" in
4506             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4507         esac
4508
4509         check_x86asm "movbe ecx, [5]" && enable x86asm ||
4510             die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4511         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4512         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4513         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4514         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4515         check_x86asm "CPU amdnop"                      || disable cpunop
4516     fi
4517
4518     case "$cpu" in
4519         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4520             disable fast_clz
4521         ;;
4522     esac
4523
4524 fi
4525
4526 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4527
4528 check_ldflags -Wl,--as-needed
4529
4530 if ! disabled network; then
4531     check_func getaddrinfo $network_extralibs
4532     check_func inet_aton $network_extralibs
4533
4534     check_type netdb.h "struct addrinfo"
4535     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4536     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4537     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4538     check_type poll.h "struct pollfd"
4539     check_type netinet/sctp.h "struct sctp_event_subscribe"
4540     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4541     check_type netinet/in.h "struct sockaddr_in6"
4542     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4543     check_type "sys/types.h sys/socket.h" socklen_t
4544
4545     # Prefer arpa/inet.h over winsock2
4546     if check_header arpa/inet.h ; then
4547         check_func closesocket
4548     elif check_header winsock2.h ; then
4549         check_func_headers winsock2.h closesocket -lws2 &&
4550             network_extralibs="-lws2" ||
4551         { check_func_headers winsock2.h closesocket -lws2_32 &&
4552             network_extralibs="-lws2_32"; } || disable winsock2_h network
4553         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4554
4555         check_type ws2tcpip.h socklen_t
4556         check_type ws2tcpip.h "struct addrinfo"
4557         check_type ws2tcpip.h "struct group_source_req"
4558         check_type ws2tcpip.h "struct ip_mreq_source"
4559         check_type ws2tcpip.h "struct ipv6_mreq"
4560         check_type winsock2.h "struct pollfd"
4561         check_struct winsock2.h "struct sockaddr" sa_len
4562         check_type ws2tcpip.h "struct sockaddr_in6"
4563         check_type ws2tcpip.h "struct sockaddr_storage"
4564     else
4565         disable network
4566     fi
4567 fi
4568
4569 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4570 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4571 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4572 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4573
4574 case "$custom_allocator" in
4575     jemalloc)
4576         # jemalloc by default does not use a prefix
4577         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4578     ;;
4579     tcmalloc)
4580         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4581         malloc_prefix=tc_
4582     ;;
4583 esac
4584
4585 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4586 check_func  ${malloc_prefix}memalign            && enable memalign
4587 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4588
4589 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4590     { check_lib clock_gettime time.h clock_gettime ||
4591       check_lib clock_gettime time.h clock_gettime -lrt; }
4592
4593 check_func  fcntl
4594 check_func  fork
4595 check_func  gethrtime
4596 check_func  getopt
4597 check_func  getrusage
4598 check_func  gettimeofday
4599 check_func  gmtime_r
4600 check_func  isatty
4601 check_func  localtime_r
4602 check_func  mach_absolute_time
4603 check_func  mkstemp
4604 check_func  mmap
4605 check_func  mprotect
4606 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4607 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4608 check_func  sched_getaffinity
4609 check_func  setrlimit
4610 check_func  strerror_r
4611 check_func  sysconf
4612 check_func  sysctl
4613 check_func  usleep
4614
4615 check_func_headers io.h setmode
4616 check_func_headers stdlib.h getenv
4617
4618 check_func_headers windows.h GetProcessAffinityMask
4619 check_func_headers windows.h GetProcessTimes
4620 check_func_headers windows.h GetSystemTimeAsFileTime
4621 check_func_headers windows.h LoadLibrary
4622 check_func_headers windows.h MapViewOfFile
4623 check_func_headers windows.h SetConsoleTextAttribute
4624 check_func_headers windows.h Sleep
4625 check_func_headers windows.h VirtualAlloc
4626 check_struct windows.h "CONDITION_VARIABLE" Ptr
4627
4628 check_header d3d11.h
4629 check_header direct.h
4630 check_header dlfcn.h
4631 check_header dxva.h
4632 check_header dxva2api.h
4633 check_header io.h
4634 check_header mach/mach_time.h
4635 check_header malloc.h
4636 check_header poll.h
4637 check_header sys/mman.h
4638 check_header sys/param.h
4639 check_header sys/resource.h
4640 check_header sys/select.h
4641 check_header sys/time.h
4642 check_header sys/un.h
4643 check_header unistd.h
4644 check_header valgrind/valgrind.h
4645 check_header VideoDecodeAcceleration/VDADecoder.h
4646 check_header windows.h
4647
4648 # it seems there are versions of clang in some distros that try to use the
4649 # gcc headers, which explodes for stdatomic
4650 # so we also check that atomics actually work here
4651 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4652
4653 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4654 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4655 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4656
4657 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4658
4659 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4660 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4661 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4662
4663 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4664 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4665 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4666 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4667 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4668 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4669 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4670 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4671 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4672
4673 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4674
4675 if ! disabled w32threads && ! enabled pthreads; then
4676     check_lib w32threads "windows.h process.h" _beginthreadex
4677 fi
4678
4679 # check for some common methods of building with pthread support
4680 # do this before the optional library checks as some of them require pthreads
4681 if ! disabled pthreads && ! enabled w32threads; then
4682     if check_lib pthreads pthread.h pthread_join -pthread; then
4683         add_cflags -pthread
4684     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4685         add_cflags -pthreads
4686     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4687         :
4688     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4689         :
4690     elif check_func pthread_join; then
4691         enable pthreads
4692     fi
4693 fi
4694
4695 enabled pthreads &&
4696     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4697
4698 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4699 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4700
4701 # On some systems dynamic loading requires no extra linker flags
4702 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4703
4704 check_lib libm math.h sin -lm
4705
4706 atan2f_args=2
4707 ldexpf_args=2
4708 powf_args=2
4709
4710 for func in $MATH_FUNCS; do
4711     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4712 done
4713
4714 # these are off by default, so fail if requested and not available
4715 enabled avisynth          && require_header avisynth/avisynth_c.h
4716 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4717 enabled cuda              && require cuda cuda.h cuInit -lcuda
4718 enabled frei0r            && require_header frei0r.h
4719 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4720 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4721 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4722 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4723 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4724 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4725 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4726 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4727 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4728                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4729                                done || die "ERROR: libgsm not found"; }
4730 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4731 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4732 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4733 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4734 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4735 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4736 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4737 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4738 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4739 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4740 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4741                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4742 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4743 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4744 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4745 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4746 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4747 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4748 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4749 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4750 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4751 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4752 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4753 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4754                              { enabled libvpx_vp8_decoder &&
4755                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4756                                enabled libvpx_vp8_encoder &&
4757                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4758                                enabled libvpx_vp9_decoder &&
4759                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4760                                enabled libvpx_vp9_encoder &&
4761                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4762                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4763                                    die "libvpx enabled but no supported decoders/encoders found"
4764                              }
4765 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4766 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4767 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4768                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4769                              { check_cpp_condition x264.h "X264_MPEG2" &&
4770                                enable libx262; }
4771 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4772                              require_cpp_condition x265.h "X265_BUILD >= 57"
4773 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4774 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4775 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4776                                { ! enabled cross_compile &&
4777                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4778                                  add_ldflags -L/opt/vc/lib/ &&
4779                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4780                                die "ERROR: mmal not found" &&
4781                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4782 enabled omx               && require_header OMX_Core.h
4783 enabled omx_rpi           && { check_header OMX_Core.h ||
4784                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4785                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4786 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4787                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4788                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4789                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4790                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4791                                die "ERROR: openssl not found"; }
4792
4793 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4794
4795 if enabled nvenc; then
4796     require_header nvEncodeAPI.h
4797     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4798 fi
4799
4800 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4801 if enabled avplay; then
4802     CFLAGS_SAVE=$CFLAGS
4803     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4804     sdl_cflags=$pkg_cflags
4805     CFLAGS=$CFLAGS_SAVE
4806 fi
4807
4808 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4809 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4810
4811 check_header linux/fb.h
4812 check_header linux/videodev2.h
4813 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4814
4815 check_header AVFoundation/AVFoundation.h
4816
4817 check_header sys/videoio.h
4818
4819 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4820 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4821 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4822 # w32api 3.12 had it defined wrong
4823 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4824
4825 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4826 { check_header dev/bktr/ioctl_meteor.h &&
4827   check_header dev/bktr/ioctl_bt848.h; } ||
4828 { check_header machine/ioctl_meteor.h &&
4829   check_header machine/ioctl_bt848.h; } ||
4830 { check_header dev/video/meteor/ioctl_meteor.h &&
4831   check_he