build: Explicitly disable external libraries when not explicitly enabled
[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-libkvazaar        HEVC video encoding
207   --enable-libmp3lame        MP3 audio encoding
208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
209   --enable-libopencore-amrwb AMR-WB audio decoding
210   --enable-libopencv         computer vision
211   --enable-libopenh264       H.264 video encoding/decoding
212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
213   --enable-libopus           Opus audio encoding/decoding
214   --enable-libpulse          Pulseaudio sound server
215   --enable-librtmp           RTMP streaming
216   --enable-libschroedinger   Dirac video encoding/decoding
217   --enable-libsnappy         snappy compression
218   --enable-libspeex          Speex audio encoding/decoding
219   --enable-libtheora         Theora video encoding/decoding
220   --enable-libtwolame        MP2 audio encoding
221   --enable-libvo-aacenc      AAC audio encoding
222   --enable-libvo-amrwbenc    AMR-WB audio encoding
223   --enable-libvorbis         Vorbis audio encoding/decoding
224   --enable-libvpx            VP* video encoding/decoding
225   --enable-libwavpack        Wavpack audio encoding/decoding
226   --enable-libwebp           WebP image encoding/decoding
227   --enable-libx264           H.264 video encoding
228   --enable-libx265           HEVC video encoding
229   --enable-libxavs           Chinese AVS video encoding
230   --enable-libxcb            X window system protocol communication
231   --enable-libxcb-shm        X11 shm communication [auto]
232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
233   --enable-libxvid           MPEG-4 ASP video encoding
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-cuda    Nvidia CUDA (dynamically linked)
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --cc=CC                  use C compiler CC [$cc_default]
268   --objcc=OCC              use ObjC compiler OCC [$cc_default]
269   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
270   --ld=LD                  use linker LD
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
352                            in the name) of tests whose result is ignored
353
354 NOTE: Object files are built at the place where configure is launched.
355 EOF
356   exit 0
357 }
358
359 quotes='""'
360
361 log(){
362     echo "$@" >> $logfile
363 }
364
365 log_file(){
366     log BEGIN $1
367     i=1
368     while read line; do
369         printf '%5s   %s\n' "${i}" "${line}"
370         i=$(($i+1))
371     done < $1 >> $logfile
372     log END $1
373 }
374
375 echolog(){
376     log "$@"
377     echo "$@"
378 }
379
380 warn(){
381     log "WARNING: $*"
382     WARNINGS="${WARNINGS}WARNING: $*\n"
383 }
384
385 die(){
386     echolog "$@"
387     cat <<EOF
388
389 If you think configure made a mistake, make sure you are using the latest
390 version from Git.  If the latest version fails, report the problem to the
391 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
392 EOF
393     if disabled logging; then
394         cat <<EOF
395 Rerun configure with logging enabled (do not use --disable-logging), and
396 include the log this produces with your report.
397 EOF
398     else
399         cat <<EOF
400 Include the log file "$logfile" produced by configure as this will help
401 solving the problem.
402 EOF
403     fi
404     exit 1
405 }
406
407 # Avoid locale weirdness, besides we really just want to translate ASCII.
408 toupper(){
409     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
410 }
411
412 tolower(){
413     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
414 }
415
416 c_escape(){
417     echo "$*" | sed 's/["\\]/\\\0/g'
418 }
419
420 sh_quote(){
421     v=$(echo "$1" | sed "s/'/'\\\\''/g")
422     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
423     echo "$v"
424 }
425
426 cleanws(){
427     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
428 }
429
430 filter(){
431     pat=$1
432     shift
433     for v; do
434         eval "case $v in $pat) printf '%s ' $v ;; esac"
435     done
436 }
437
438 filter_out(){
439     pat=$1
440     shift
441     for v; do
442         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
443     done
444 }
445
446 map(){
447     m=$1
448     shift
449     for v; do eval $m; done
450 }
451
452 add_suffix(){
453     suffix=$1
454     shift
455     for v; do echo ${v}${suffix}; done
456 }
457
458 set_all(){
459     value=$1
460     shift
461     for var in $*; do
462         eval $var=$value
463     done
464 }
465
466 set_weak(){
467     value=$1
468     shift
469     for var; do
470         eval : \${$var:=$value}
471     done
472 }
473
474 sanitize_var_name(){
475     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
476 }
477
478 set_safe(){
479     var=$1
480     shift
481     eval $(sanitize_var_name "$var")='$*'
482 }
483
484 get_safe(){
485     eval echo \$$(sanitize_var_name "$1")
486 }
487
488 pushvar(){
489     for pvar in $*; do
490         eval level=\${${pvar}_level:=0}
491         eval ${pvar}_${level}="\$$pvar"
492         eval ${pvar}_level=$(($level+1))
493     done
494 }
495
496 popvar(){
497     for pvar in $*; do
498         eval level=\${${pvar}_level:-0}
499         test $level = 0 && continue
500         eval level=$(($level-1))
501         eval $pvar="\${${pvar}_${level}}"
502         eval ${pvar}_level=$level
503         eval unset ${pvar}_${level}
504     done
505 }
506
507 enable(){
508     set_all yes $*
509 }
510
511 disable(){
512     set_all no $*
513 }
514
515 enable_weak(){
516     set_weak yes $*
517 }
518
519 disable_weak(){
520     set_weak no $*
521 }
522
523 enable_safe(){
524     for var; do
525         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
526     done
527 }
528
529 disable_safe(){
530     for var; do
531         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
532     done
533 }
534
535 do_enable_deep(){
536     for var; do
537         enabled $var && continue
538         eval sel="\$${var}_select"
539         eval sgs="\$${var}_suggest"
540         pushvar var sgs
541         enable_deep $sel
542         popvar sgs
543         enable_deep_weak $sgs
544         popvar var
545     done
546 }
547
548 enable_deep(){
549     do_enable_deep $*
550     enable $*
551 }
552
553 enable_deep_weak(){
554     for var; do
555         disabled $var && continue
556         pushvar var
557         do_enable_deep $var
558         popvar var
559         enable_weak $var
560     done
561 }
562
563 enabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xyes"
566 }
567
568 disabled(){
569     test "${1#!}" = "$1" && op== || op=!=
570     eval test "x\$${1#!}" $op "xno"
571 }
572
573 enabled_all(){
574     for opt; do
575         enabled $opt || return 1
576     done
577 }
578
579 disabled_all(){
580     for opt; do
581         disabled $opt || return 1
582     done
583 }
584
585 enabled_any(){
586     for opt; do
587         enabled $opt && return 0
588     done
589 }
590
591 disabled_any(){
592     for opt; do
593         disabled $opt && return 0
594     done
595     return 1
596 }
597
598 set_default(){
599     for opt; do
600         eval : \${$opt:=\$${opt}_default}
601     done
602 }
603
604 is_in(){
605     value=$1
606     shift
607     for var in $*; do
608         [ $var = $value ] && return 0
609     done
610     return 1
611 }
612
613 do_check_deps(){
614     for cfg; do
615         enabled ${cfg}_checking && die "Circular dependency for $cfg."
616         disabled ${cfg}_checking && continue
617         enable ${cfg}_checking
618         append allopts $cfg
619
620         eval dep_all="\$${cfg}_deps"
621         eval dep_any="\$${cfg}_deps_any"
622         eval dep_con="\$${cfg}_conflict"
623         eval dep_sel="\$${cfg}_select"
624         eval dep_sgs="\$${cfg}_suggest"
625         eval dep_ifa="\$${cfg}_if"
626         eval dep_ifn="\$${cfg}_if_any"
627
628         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
629         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
630         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631
632         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
633         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
634         enabled_all  $dep_all || disable $cfg
635         enabled_any  $dep_any || disable $cfg
636         disabled_all $dep_con || disable $cfg
637         disabled_any $dep_sel && disable $cfg
638
639         if enabled $cfg; then
640             enable_deep $dep_sel
641             enable_deep_weak $dep_sgs
642         fi
643
644         disable ${cfg}_checking
645     done
646 }
647
648 check_deps(){
649     unset allopts
650
651     do_check_deps "$@"
652
653     for cfg in $allopts; do
654         enabled $cfg || continue
655         eval dep_extralibs="\$${cfg}_extralibs"
656         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
657     done
658 }
659
660 print_config(){
661     pfx=$1
662     files=$2
663     shift 2
664     map 'eval echo "$v \${$v:-no}"' "$@" |
665     awk "BEGIN { split(\"$files\", files) }
666         {
667             c = \"$pfx\" toupper(\$1);
668             v = \$2;
669             sub(/yes/, 1, v);
670             sub(/no/,  0, v);
671             for (f in files) {
672                 file = files[f];
673                 if (file ~ /\\.h\$/) {
674                     printf(\"#define %s %d\\n\", c, v) >>file;
675                 } else if (file ~ /\\.asm\$/) {
676                     printf(\"%%define %s %d\\n\", c, v) >>file;
677                 } else if (file ~ /\\.mak\$/) {
678                     n = -v ? \"\" : \"!\";
679                     printf(\"%s%s=yes\\n\", n, c) >>file;
680                 }
681             }
682         }"
683 }
684
685 print_enabled(){
686     suf=$1
687     shift
688     for v; do
689         enabled $v && printf "%s\n" ${v%$suf}
690     done
691 }
692
693 append(){
694     var=$1
695     shift
696     eval "$var=\"\$$var $*\""
697 }
698
699 prepend(){
700     var=$1
701     shift
702     eval "$var=\"$* \$$var\""
703 }
704
705 unique(){
706     var=$1
707     uniq_list=""
708     for tok in $(eval echo \$$var); do
709         uniq_list="$(filter_out $tok $uniq_list) $tok"
710     done
711     eval "$var=\"${uniq_list}\""
712 }
713
714 add_cppflags(){
715     append CPPFLAGS "$@"
716 }
717
718 add_cflags(){
719     append CFLAGS $($cflags_filter "$@")
720 }
721
722 add_cflags_headers(){
723     append CFLAGS_HEADERS $($cflags_filter "$@")
724 }
725
726 add_asflags(){
727     append ASFLAGS $($asflags_filter "$@")
728 }
729
730 add_objcflags(){
731     append OBJCFLAGS $($objcflags_filter "$@")
732 }
733
734 add_ldflags(){
735     append LDFLAGS $($ldflags_filter "$@")
736 }
737
738 add_ldexeflags(){
739     append LDEXEFLAGS $($ldflags_filter "$@")
740 }
741
742 add_stripflags(){
743     append STRIPFLAGS "$@"
744 }
745
746 add_extralibs(){
747     prepend extralibs $($ldflags_filter "$@")
748 }
749
750 add_host_cppflags(){
751     append host_cppflags "$@"
752 }
753
754 add_host_cflags(){
755     append host_cflags $($host_cflags_filter "$@")
756 }
757
758 add_host_ldflags(){
759     append host_ldflags $($host_ldflags_filter "$@")
760 }
761
762 add_compat(){
763     append compat_objs $1
764     shift
765     map 'add_cppflags -D$v' "$@"
766 }
767
768 check_cmd(){
769     log "$@"
770     "$@" >> $logfile 2>&1
771 }
772
773 cc_o(){
774     eval printf '%s\\n' $CC_O
775 }
776
777 cc_e(){
778     eval printf '%s\\n' $CC_E
779 }
780
781 check_cc(){
782     log check_cc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_objcc(){
789     log check_objcc "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
793 }
794
795 check_cpp(){
796     log check_cpp "$@"
797     cat > $TMPC
798     log_file $TMPC
799     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
800 }
801
802 as_o(){
803     eval printf '%s\\n' $AS_O
804 }
805
806 check_as(){
807     log check_as "$@"
808     cat > $TMPS
809     log_file $TMPS
810     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
811 }
812
813 check_inline_asm(){
814     log check_inline_asm "$@"
815     name="$1"
816     code="$2"
817     shift 2
818     disable $name
819     check_cc "$@" <<EOF && enable $name
820 void foo(void){ __asm__ volatile($code); }
821 EOF
822 }
823
824 check_insn(){
825     log check_insn "$@"
826     check_inline_asm ${1}_inline "\"$2\""
827     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
828 }
829
830 check_yasm(){
831     log check_yasm "$@"
832     echo "$1" > $TMPS
833     log_file $TMPS
834     shift 1
835     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
836 }
837
838 ld_o(){
839     eval printf '%s\\n' $LD_O
840 }
841
842 check_ld(){
843     log check_ld "$@"
844     flags=$(filter_out '-l*' "$@")
845     libs=$(filter '-l*' "$@")
846     check_cc $($cflags_filter $flags) || return
847     flags=$($ldflags_filter $flags)
848     libs=$($ldflags_filter $libs)
849     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
850 }
851
852 print_include(){
853     hdr=$1
854     test "${hdr%.h}" = "${hdr}" &&
855         echo "#include $hdr"    ||
856         echo "#include <$hdr>"
857 }
858
859 check_code(){
860     log check_code "$@"
861     check=$1
862     headers=$2
863     code=$3
864     shift 3
865     {
866         for hdr in $headers; do
867             print_include $hdr
868         done
869         echo "int main(void) { $code; return 0; }"
870     } | check_$check "$@"
871 }
872
873 check_cppflags(){
874     log check_cppflags "$@"
875     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
876 #include <stdlib.h>;
877 EOF
878 }
879
880 test_cflags(){
881     log test_cflags "$@"
882     set -- $($cflags_filter "$@")
883     check_cc "$@" <<EOF
884 int x;
885 EOF
886 }
887
888 check_cflags(){
889     log check_cflags "$@"
890     test_cflags "$@" && add_cflags "$@"
891 }
892
893 test_objcflags(){
894     log test_objcflags "$@"
895     set -- $($objcflags_filter "$@")
896     check_objcc "$@" <<EOF
897 int x;
898 EOF
899 }
900
901 check_objcflags(){
902     log check_objcflags "$@"
903     test_objcflags "$@" && add_objcflags "$@"
904 }
905
906 test_ldflags(){
907     log test_ldflags "$@"
908     check_ld "$@" <<EOF
909 int main(void){ return 0; }
910 EOF
911 }
912
913 check_ldflags(){
914     log check_ldflags "$@"
915     test_ldflags "$@" && add_ldflags "$@"
916 }
917
918 test_stripflags(){
919     log test_stripflags "$@"
920     # call check_cc to get a fresh TMPO
921     check_cc <<EOF
922 int main(void) { return 0; }
923 EOF
924     check_cmd $strip $STRIPFLAGS "$@" $TMPO
925 }
926
927 check_stripflags(){
928     log check_stripflags "$@"
929     test_stripflags "$@" && add_stripflags "$@"
930 }
931
932 check_header(){
933     log check_header "$@"
934     header=$1
935     shift
936     disable_safe $header
937     check_cpp "$@" <<EOF && enable_safe $header
938 #include <$header>
939 int x;
940 EOF
941 }
942
943 check_func(){
944     log check_func "$@"
945     func=$1
946     shift
947     disable $func
948     check_ld "$@" <<EOF && enable $func
949 extern int $func();
950 int main(void){ $func(); }
951 EOF
952 }
953
954 check_mathfunc(){
955     log check_mathfunc "$@"
956     func=$1
957     narg=$2
958     shift 2
959     test $narg = 2 && args="f, g" || args="f"
960     disable $func
961     check_ld "$@" <<EOF && enable $func
962 #include <math.h>
963 float foo(float f, float g) { return $func($args); }
964 int main(void){ return 0; }
965 EOF
966 }
967
968 check_func_headers(){
969     log check_func_headers "$@"
970     headers=$1
971     funcs=$2
972     shift 2
973     {
974         for hdr in $headers; do
975             print_include $hdr
976         done
977         for func in $funcs; do
978             echo "long check_$func(void) { return (long) $func; }"
979         done
980         echo "int main(void) { return 0; }"
981     } | check_ld "$@" && enable $funcs && enable_safe $headers
982 }
983
984 check_cpp_condition(){
985     log check_cpp_condition "$@"
986     header=$1
987     condition=$2
988     shift 2
989     check_cpp "$@" <<EOF
990 #include <$header>
991 #if !($condition)
992 #error "unsatisfied condition: $condition"
993 #endif
994 EOF
995 }
996
997 test_cflags_cpp(){
998     log test_cflags_cpp "$@"
999     flags=$1
1000     condition=$2
1001     shift 2
1002     set -- $($cflags_filter "$flags")
1003     check_cpp "$@" <<EOF
1004 #if !($condition)
1005 #error "unsatisfied condition: $condition"
1006 #endif
1007 EOF
1008 }
1009
1010 check_lib(){
1011     log check_lib "$@"
1012     name="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     disable $name
1017     check_func_headers "$headers" "$funcs" "$@" &&
1018         enable $name && add_extralibs "$@"
1019 }
1020
1021 check_pkg_config(){
1022     log check_pkg_config "$@"
1023     name="$1"
1024     pkg_version="$2"
1025     pkg="${2%% *}"
1026     headers="$3"
1027     funcs="$4"
1028     shift 4
1029     disable $name
1030     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1031     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1032     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1033     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1034         enable $name &&
1035         add_cflags    "$pkg_cflags" &&
1036         add_extralibs "$pkg_libs"
1037 }
1038
1039 check_exec(){
1040     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1041 }
1042
1043 check_exec_crash(){
1044     log check_exec_crash "$@"
1045     code=$(cat)
1046
1047     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1048     # are safe but may not be available everywhere.  Thus we use
1049     # raise(SIGTERM) instead.  The check is run in a subshell so we
1050     # can redirect the "Terminated" message from the shell.  SIGBUS
1051     # is not defined by standard C so it is used conditionally.
1052
1053     (check_exec "$@") >> $logfile 2>&1 <<EOF
1054 #include <signal.h>
1055 static void sighandler(int sig){
1056     raise(SIGTERM);
1057 }
1058 int foo(void){
1059     $code
1060 }
1061 int (*func_ptr)(void) = foo;
1062 int main(void){
1063     signal(SIGILL, sighandler);
1064     signal(SIGFPE, sighandler);
1065     signal(SIGSEGV, sighandler);
1066 #ifdef SIGBUS
1067     signal(SIGBUS, sighandler);
1068 #endif
1069     return func_ptr();
1070 }
1071 EOF
1072 }
1073
1074 check_type(){
1075     log check_type "$@"
1076     headers=$1
1077     type=$2
1078     shift 2
1079     disable_safe "$type"
1080     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1081 }
1082
1083 check_struct(){
1084     log check_struct "$@"
1085     headers=$1
1086     struct=$2
1087     member=$3
1088     shift 3
1089     disable_safe "${struct}_${member}"
1090     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1091         enable_safe "${struct}_${member}"
1092 }
1093
1094 check_builtin(){
1095     log check_builtin "$@"
1096     name=$1
1097     headers=$2
1098     builtin=$3
1099     shift 3
1100     disable "$name"
1101     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1102 }
1103
1104 check_compile_assert(){
1105     log check_compile_assert "$@"
1106     name=$1
1107     headers=$2
1108     condition=$3
1109     shift 3
1110     disable "$name"
1111     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1112 }
1113
1114 require(){
1115     log require "$@"
1116     name_version="$1"
1117     name="${1%% *}"
1118     headers="$2"
1119     func="$3"
1120     shift 3
1121     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1122 }
1123
1124 require_header(){
1125     log require "$@"
1126     header="$1"
1127     shift
1128     check_header "$header" "$@" || die "ERROR: $header not found"
1129 }
1130
1131 require_cpp_condition(){
1132     log require "$@"
1133     header="$1"
1134     condition="$2"
1135     shift 2
1136     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1137 }
1138
1139 require_pkg_config(){
1140     log require_pkg_config "$@"
1141     pkg_version="$2"
1142     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1143 }
1144
1145 hostcc_e(){
1146     eval printf '%s\\n' $HOSTCC_E
1147 }
1148
1149 hostcc_o(){
1150     eval printf '%s\\n' $HOSTCC_O
1151 }
1152
1153 check_host_cc(){
1154     log check_host_cc "$@"
1155     cat > $TMPC
1156     log_file $TMPC
1157     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1158 }
1159
1160 check_host_cpp(){
1161     log check_host_cpp "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1165 }
1166
1167 check_host_cppflags(){
1168     log check_host_cppflags "$@"
1169     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1170 #include <stdlib.h>;
1171 EOF
1172 }
1173
1174 check_host_cflags(){
1175     log check_host_cflags "$@"
1176     set -- $($host_cflags_filter "$@")
1177     check_host_cc "$@" <<EOF && append host_cflags "$@"
1178 int x;
1179 EOF
1180 }
1181
1182 check_host_cpp_condition(){
1183     log check_host_cpp_condition "$@"
1184     header=$1
1185     condition=$2
1186     shift 2
1187     check_host_cpp "$@" <<EOF
1188 #include <$header>
1189 #if !($condition)
1190 #error "unsatisfied condition: $condition"
1191 #endif
1192 EOF
1193 }
1194
1195 apply(){
1196     file=$1
1197     shift
1198     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1199 }
1200
1201 cp_if_changed(){
1202     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1203     mkdir -p "$(dirname $2)"
1204     cp -f "$1" "$2"
1205 }
1206
1207 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1208 # system-dependent things.
1209
1210 AVCODEC_COMPONENTS="
1211     bsfs
1212     decoders
1213     encoders
1214     hwaccels
1215     parsers
1216 "
1217
1218 AVDEVICE_COMPONENTS="
1219     indevs
1220     outdevs
1221 "
1222 AVFILTER_COMPONENTS="
1223     filters
1224 "
1225 AVFORMAT_COMPONENTS="
1226     demuxers
1227     muxers
1228     protocols
1229 "
1230
1231 AVRESAMPLE_COMPONENTS=""
1232 AVUTIL_COMPONENTS=""
1233
1234 COMPONENT_LIST="
1235     $AVCODEC_COMPONENTS
1236     $AVDEVICE_COMPONENTS
1237     $AVFILTER_COMPONENTS
1238     $AVFORMAT_COMPONENTS
1239     $AVRESAMPLE_COMPONENTS
1240     $AVUTIL_COMPONENTS
1241 "
1242
1243 EXAMPLE_LIST="
1244     decode_audio_example
1245     decode_video_example
1246     encode_audio_example
1247     encode_video_example
1248     filter_audio_example
1249     metadata_example
1250     output_example
1251     qsvdec_example
1252     transcode_aac_example
1253 "
1254
1255 HWACCEL_LIBRARY_NONFREE_LIST="
1256     cuda
1257     libnpp
1258 "
1259 HWACCEL_LIBRARY_LIST="
1260     $HWACCEL_LIBRARY_NONFREE_LIST
1261     d3d11va
1262     dxva2
1263     libmfx
1264     mmal
1265     nvenc
1266     omx
1267     vaapi
1268     vda
1269     vdpau
1270 "
1271
1272 EXTERNAL_LIBRARY_GPL_LIST="
1273     libcdio
1274     libx264
1275     libx265
1276     libxavs
1277     libxvid
1278 "
1279
1280 EXTERNAL_LIBRARY_NONFREE_LIST="
1281     libfaac
1282     libfdk_aac
1283     openssl
1284 "
1285
1286 EXTERNAL_LIBRARY_VERSION3_LIST="
1287     libopencore_amrnb
1288     libopencore_amrwb
1289     libvo_aacenc
1290     libvo_amrwbenc
1291 "
1292
1293 EXTERNAL_LIBRARY_LIST="
1294     $EXTERNAL_LIBRARY_GPL_LIST
1295     $EXTERNAL_LIBRARY_NONFREE_LIST
1296     $EXTERNAL_LIBRARY_VERSION3_LIST
1297     avisynth
1298     avxsynth
1299     frei0r
1300     gnutls
1301     libbs2b
1302     libdc1394
1303     libdcadec
1304     libfontconfig
1305     libfreetype
1306     libgsm
1307     libhdcd
1308     libilbc
1309     libkvazaar
1310     libmp3lame
1311     libopencv
1312     libopenh264
1313     libopenjpeg
1314     libopus
1315     libpulse
1316     librtmp
1317     libschroedinger
1318     libsnappy
1319     libspeex
1320     libtheora
1321     libtwolame
1322     libvorbis
1323     libvpx
1324     libwavpack
1325     libwebp
1326     libxcb
1327     libxcb_shm
1328     libxcb_xfixes
1329 "
1330
1331 SYSTEM_LIBRARY_LIST="
1332     bzlib
1333     zlib
1334 "
1335
1336 FEATURE_LIST="
1337     gray
1338     hardcoded_tables
1339     omx_rpi
1340     runtime_cpudetect
1341     safe_bitstream_reader
1342     shared
1343     small
1344     sram
1345     static
1346     swscale_alpha
1347 "
1348
1349 LIBRARY_LIST="
1350     avcodec
1351     avdevice
1352     avfilter
1353     avformat
1354     avresample
1355     avutil
1356     swscale
1357 "
1358
1359 LICENSE_LIST="
1360     gpl
1361     nonfree
1362     version3
1363 "
1364
1365 PROGRAM_LIST="
1366     avconv
1367     avplay
1368     avprobe
1369 "
1370
1371 SUBSYSTEM_LIST="
1372     dct
1373     doc
1374     error_resilience
1375     faan
1376     fft
1377     lsp
1378     lzo
1379     mdct
1380     network
1381     rdft
1382 "
1383
1384 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1385 CONFIG_LIST="
1386     $EXAMPLE_LIST
1387     $EXTERNAL_LIBRARY_LIST
1388     $HWACCEL_LIBRARY_LIST
1389     $FEATURE_LIST
1390     $LICENSE_LIST
1391     $LIBRARY_LIST
1392     $PROGRAM_LIST
1393     $SUBSYSTEM_LIST
1394     $SYSTEM_LIBRARY_LIST
1395     neon_clobber_test
1396     pic
1397     pod2man
1398     texi2html
1399     thumb
1400     valgrind_backtrace
1401     xmm_clobber_test
1402     $COMPONENT_LIST
1403 "
1404
1405 THREADS_LIST="
1406     pthreads
1407     w32threads
1408 "
1409
1410 ATOMICS_LIST="
1411     atomics_gcc
1412     atomics_suncc
1413     atomics_win32
1414 "
1415
1416 ARCH_LIST="
1417     aarch64
1418     alpha
1419     arm
1420     avr32
1421     avr32_ap
1422     avr32_uc
1423     bfin
1424     ia64
1425     m68k
1426     mips
1427     mips64
1428     parisc
1429     ppc
1430     ppc64
1431     s390
1432     sh4
1433     sparc
1434     sparc64
1435     tilegx
1436     tilepro
1437     tomi
1438     x86
1439     x86_32
1440     x86_64
1441 "
1442
1443 ARCH_EXT_LIST_ARM="
1444     armv5te
1445     armv6
1446     armv6t2
1447     armv8
1448     neon
1449     vfp
1450     vfpv3
1451 "
1452
1453 ARCH_EXT_LIST_X86_SIMD="
1454     amd3dnow
1455     amd3dnowext
1456     avx
1457     avx2
1458     fma3
1459     fma4
1460     mmx
1461     mmxext
1462     sse
1463     sse2
1464     sse3
1465     sse4
1466     sse42
1467     ssse3
1468     xop
1469 "
1470
1471 ARCH_EXT_LIST_PPC="
1472     altivec
1473     dcbzl
1474     ldbrx
1475     power8
1476     ppc4xx
1477     vsx
1478 "
1479
1480 ARCH_EXT_LIST_X86="
1481     $ARCH_EXT_LIST_X86_SIMD
1482     cpunop
1483     i686
1484 "
1485
1486 ARCH_EXT_LIST_MIPS="
1487     loongson
1488     mips32r1
1489     mips64r1
1490     mips32r2
1491     mips64r2
1492     mips32r6
1493     mips64r6
1494 "
1495
1496 ARCH_EXT_LIST="
1497     $ARCH_EXT_LIST_ARM
1498     $ARCH_EXT_LIST_MIPS
1499     $ARCH_EXT_LIST_PPC
1500     $ARCH_EXT_LIST_X86
1501     vis
1502 "
1503
1504 ARCH_FEATURES="
1505     aligned_stack
1506     fast_64bit
1507     fast_clz
1508     fast_cmov
1509     local_aligned_8
1510     local_aligned_16
1511     local_aligned_32
1512     simd_align_16
1513     simd_align_32
1514 "
1515
1516 BUILTIN_LIST="
1517     atomic_cas_ptr
1518     machine_rw_barrier
1519     MemoryBarrier
1520     mm_empty
1521     rdtsc
1522     sem_timedwait
1523     sync_val_compare_and_swap
1524 "
1525 HAVE_LIST_CMDLINE="
1526     inline_asm
1527     symver
1528     yasm
1529 "
1530
1531 HAVE_LIST_PUB="
1532     bigendian
1533     fast_unaligned
1534 "
1535
1536 HEADERS_LIST="
1537     AVFoundation_AVFoundation_h
1538     alsa_asoundlib_h
1539     altivec_h
1540     arpa_inet_h
1541     cdio_paranoia_h
1542     cdio_paranoia_paranoia_h
1543     d3d11_h
1544     dispatch_dispatch_h
1545     dev_bktr_ioctl_bt848_h
1546     dev_bktr_ioctl_meteor_h
1547     dev_ic_bt8xx_h
1548     dev_video_bktr_ioctl_bt848_h
1549     dev_video_meteor_ioctl_meteor_h
1550     direct_h
1551     dlfcn_h
1552     dxva_h
1553     gsm_h
1554     io_h
1555     mach_mach_time_h
1556     machine_ioctl_bt848_h
1557     machine_ioctl_meteor_h
1558     malloc_h
1559     poll_h
1560     sndio_h
1561     soundcard_h
1562     stdatomic_h
1563     sys_mman_h
1564     sys_param_h
1565     sys_resource_h
1566     sys_select_h
1567     sys_soundcard_h
1568     sys_time_h
1569     sys_un_h
1570     sys_videoio_h
1571     unistd_h
1572     valgrind_valgrind_h
1573     windows_h
1574     winsock2_h
1575 "
1576
1577 INTRINSICS_LIST="
1578     intrinsics_neon
1579 "
1580
1581 MATH_FUNCS="
1582     atanf
1583     atan2f
1584     cbrtf
1585     cosf
1586     exp2
1587     exp2f
1588     expf
1589     isinf
1590     isnan
1591     ldexpf
1592     llrint
1593     llrintf
1594     log2
1595     log2f
1596     log10f
1597     lrint
1598     lrintf
1599     powf
1600     rint
1601     round
1602     roundf
1603     sinf
1604     trunc
1605     truncf
1606 "
1607
1608 SYSTEM_FUNCS="
1609     aligned_malloc
1610     clock_gettime
1611     closesocket
1612     CommandLineToArgvW
1613     CoTaskMemFree
1614     CryptGenRandom
1615     dlopen
1616     fcntl
1617     flt_lim
1618     fork
1619     getaddrinfo
1620     gethrtime
1621     getopt
1622     GetProcessAffinityMask
1623     GetProcessMemoryInfo
1624     GetProcessTimes
1625     getrusage
1626     GetSystemTimeAsFileTime
1627     gettimeofday
1628     gmtime_r
1629     inet_aton
1630     isatty
1631     jack_port_get_latency_range
1632     LoadLibrary
1633     localtime_r
1634     mach_absolute_time
1635     MapViewOfFile
1636     memalign
1637     mkstemp
1638     mmap
1639     mprotect
1640     nanosleep
1641     posix_memalign
1642     sched_getaffinity
1643     SetConsoleTextAttribute
1644     setmode
1645     setrlimit
1646     Sleep
1647     strerror_r
1648     sysconf
1649     sysctl
1650     usleep
1651     VirtualAlloc
1652 "
1653
1654 TOOLCHAIN_FEATURES="
1655     as_dn_directive
1656     as_fpu_directive
1657     as_func
1658     as_object_arch
1659     asm_mod_q
1660     attribute_may_alias
1661     attribute_packed
1662     blocks_extension
1663     ebp_available
1664     ebx_available
1665     gnu_as
1666     ibm_asm
1667     inline_asm_labels
1668     pragma_deprecated
1669     symver_asm_label
1670     symver_gnu_asm
1671     vfp_args
1672     xform_asm
1673     xmm_clobbers
1674 "
1675
1676 TYPES_LIST="
1677     CONDITION_VARIABLE_Ptr
1678     socklen_t
1679     struct_addrinfo
1680     struct_group_source_req
1681     struct_ip_mreq_source
1682     struct_ipv6_mreq
1683     struct_pollfd
1684     struct_rusage_ru_maxrss
1685     struct_sockaddr_in6
1686     struct_sockaddr_sa_len
1687     struct_sockaddr_storage
1688     struct_v4l2_frmivalenum_discrete
1689 "
1690
1691 HAVE_LIST="
1692     $ARCH_EXT_LIST
1693     $(add_suffix _external $ARCH_EXT_LIST)
1694     $(add_suffix _inline   $ARCH_EXT_LIST)
1695     $ARCH_FEATURES
1696     $BUILTIN_LIST
1697     $HAVE_LIST_CMDLINE
1698     $HAVE_LIST_PUB
1699     $HEADERS_LIST
1700     $INTRINSICS_LIST
1701     $MATH_FUNCS
1702     $SYSTEM_FUNCS
1703     $THREADS_LIST
1704     $TOOLCHAIN_FEATURES
1705     $TYPES_LIST
1706     dos_paths
1707     dxva2_lib
1708     libc_msvcrt
1709     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1710     sdl
1711     section_data_rel_ro
1712     threads
1713     vaapi_drm
1714     vaapi_x11
1715     vdpau_x11
1716 "
1717
1718 # options emitted with CONFIG_ prefix but not available on the command line
1719 CONFIG_EXTRA="
1720     aandcttables
1721     ac3dsp
1722     audio_frame_queue
1723     audiodsp
1724     blockdsp
1725     bswapdsp
1726     cabac
1727     dirac_parse
1728     dvprofile
1729     faandct
1730     faanidct
1731     fdctdsp
1732     flacdsp
1733     fmtconvert
1734     g722dsp
1735     gmp
1736     golomb
1737     gplv3
1738     h263dsp
1739     h264chroma
1740     h264dsp
1741     h264parse
1742     h264pred
1743     h264qpel
1744     hevc_ps
1745     hpeldsp
1746     huffman
1747     huffyuvdsp
1748     huffyuvencdsp
1749     idctdsp
1750     iirfilter
1751     imdct15
1752     intrax8
1753     iso_media
1754     ividsp
1755     jpegtables
1756     lgplv3
1757     libx262
1758     libxcb_shape
1759     lpc
1760     lzf
1761     me_cmp
1762     mpeg_er
1763     mpegaudio
1764     mpegaudiodsp
1765     mpegaudioheader
1766     mpegvideo
1767     mpegvideoenc
1768     mss34dsp
1769     pixblockdsp
1770     qpeldsp
1771     qsv
1772     qsvdec
1773     qsvenc
1774     rangecoder
1775     riffdec
1776     riffenc
1777     rtpdec
1778     rtpenc_chain
1779     rv34dsp
1780     sinewin
1781     snappy
1782     srtp
1783     startcode
1784     texturedsp
1785     texturedspenc
1786     tpeldsp
1787     vaapi_encode
1788     vc1dsp
1789     videodsp
1790     vp3dsp
1791     vp56dsp
1792     vp8dsp
1793     wma_freqs
1794     wmv2dsp
1795 "
1796
1797 CMDLINE_SELECT="
1798     $ARCH_EXT_LIST
1799     $CONFIG_LIST
1800     $HAVE_LIST_CMDLINE
1801     $THREADS_LIST
1802     asm
1803     cross_compile
1804     debug
1805     extra_warnings
1806     logging
1807     lto
1808     optimizations
1809     rpath
1810 "
1811
1812 PATHS_LIST="
1813     bindir
1814     datadir
1815     docdir
1816     incdir
1817     libdir
1818     mandir
1819     prefix
1820     shlibdir
1821 "
1822
1823 CMDLINE_SET="
1824     $PATHS_LIST
1825     ar
1826     arch
1827     as
1828     cc
1829     objcc
1830     cpu
1831     cross_prefix
1832     custom_allocator
1833     dep_cc
1834     env
1835     extra_version
1836     host_cc
1837     host_cflags
1838     host_extralibs
1839     host_ld
1840     host_ldflags
1841     host_os
1842     ignore_tests
1843     ld
1844     logfile
1845     malloc_prefix
1846     nm
1847     optflags
1848     pkg_config
1849     pkg_config_flags
1850     random_seed
1851     samples
1852     sysinclude
1853     sysroot
1854     target_exec
1855     target_os
1856     target_path
1857     target_samples
1858     toolchain
1859 "
1860
1861 CMDLINE_APPEND="
1862     extra_cflags
1863     extra_objcflags
1864     host_cppflags
1865 "
1866
1867 # code dependency declarations
1868
1869 # architecture extensions
1870
1871 armv5te_deps="arm"
1872 armv6_deps="arm"
1873 armv6t2_deps="arm"
1874 armv8_deps="aarch64"
1875 neon_deps_any="aarch64 arm"
1876 intrinsics_neon_deps="neon"
1877 vfp_deps_any="aarch64 arm"
1878 vfpv3_deps="vfp"
1879
1880 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1881
1882 altivec_deps="ppc"
1883 ppc4xx_deps="ppc"
1884 vsx_deps="altivec"
1885 power8_deps="vsx"
1886
1887 cpunop_deps="i686"
1888 x86_64_select="i686"
1889 x86_64_suggest="fast_cmov"
1890
1891 amd3dnow_deps="mmx"
1892 amd3dnowext_deps="amd3dnow"
1893 i686_deps="x86"
1894 mmx_deps="x86"
1895 mmxext_deps="mmx"
1896 sse_deps="mmxext"
1897 sse2_deps="sse"
1898 sse3_deps="sse2"
1899 ssse3_deps="sse3"
1900 sse4_deps="ssse3"
1901 sse42_deps="sse4"
1902 avx_deps="sse42"
1903 xop_deps="avx"
1904 fma3_deps="avx"
1905 fma4_deps="avx"
1906 avx2_deps="avx"
1907
1908 mmx_external_deps="yasm"
1909 mmx_inline_deps="inline_asm"
1910 mmx_suggest="mmx_external mmx_inline"
1911
1912 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1913     eval dep=\$${ext}_deps
1914     eval ${ext}_external_deps='"${dep}_external"'
1915     eval ${ext}_inline_deps='"${dep}_inline"'
1916     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1917 done
1918
1919 aligned_stack_if_any="aarch64 ppc x86"
1920 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1921 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1922 fast_unaligned_if_any="aarch64 ppc x86"
1923 simd_align_16_if_any="altivec neon sse"
1924 simd_align_32_if_any="avx"
1925
1926 # system capabilities
1927 symver_if_any="symver_asm_label symver_gnu_asm"
1928 valgrind_backtrace_conflict="optimizations"
1929 valgrind_backtrace_deps="valgrind_valgrind_h"
1930
1931 # threading support
1932 atomics_gcc_if="sync_val_compare_and_swap"
1933 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1934 atomics_win32_if="MemoryBarrier"
1935 atomics_native_if_any="$ATOMICS_LIST"
1936 w32threads_deps="atomics_native"
1937 threads_if_any="$THREADS_LIST"
1938
1939 # subsystems
1940 dct_select="rdft"
1941 dirac_parse_select="golomb"
1942 error_resilience_select="me_cmp"
1943 faandct_deps="faan fdctdsp"
1944 faanidct_deps="faan idctdsp"
1945 h264dsp_select="startcode"
1946 hevc_ps_select="golomb"
1947 intrax8_select="blockdsp idctdsp"
1948 mdct_select="fft"
1949 rdft_select="fft"
1950 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1951 mpeg_er_select="error_resilience"
1952 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1953 mpegaudiodsp_select="dct"
1954 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1955 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1956 vc1dsp_select="h264chroma qpeldsp startcode"
1957
1958 # decoders / encoders
1959 aac_decoder_select="imdct15 mdct sinewin"
1960 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1961 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1962 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1963 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1964 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1965 adpcm_g722_decoder_select="g722dsp"
1966 adpcm_g722_encoder_select="g722dsp"
1967 aic_decoder_select="golomb idctdsp"
1968 alac_encoder_select="lpc"
1969 als_decoder_select="bswapdsp"
1970 amrnb_decoder_select="lsp"
1971 amrwb_decoder_select="lsp"
1972 amv_decoder_select="sp5x_decoder"
1973 ape_decoder_select="bswapdsp"
1974 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1975 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1976 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1977 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1978 atrac1_decoder_select="mdct sinewin"
1979 atrac3_decoder_select="mdct"
1980 atrac3p_decoder_select="mdct sinewin"
1981 bink_decoder_select="blockdsp hpeldsp"
1982 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1983 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1984 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1985 cllc_decoder_select="bswapdsp"
1986 comfortnoise_encoder_select="lpc"
1987 cook_decoder_select="audiodsp mdct sinewin"
1988 cscd_decoder_select="lzo"
1989 cscd_decoder_suggest="zlib"
1990 dca_decoder_select="fmtconvert mdct"
1991 dds_decoder_select="texturedsp"
1992 dnxhd_decoder_select="blockdsp idctdsp"
1993 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1994 dvvideo_decoder_select="dvprofile idctdsp"
1995 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1996 dxa_decoder_deps="zlib"
1997 dxv_decoder_select="lzf texturedsp"
1998 eac3_decoder_select="ac3_decoder"
1999 eac3_encoder_select="ac3_encoder"
2000 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2001 eatgq_decoder_select="aandcttables idctdsp"
2002 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2003 exr_decoder_deps="zlib"
2004 ffv1_decoder_select="rangecoder"
2005 ffv1_encoder_select="rangecoder"
2006 ffvhuff_decoder_select="huffyuv_decoder"
2007 ffvhuff_encoder_select="huffyuv_encoder"
2008 fic_decoder_select="golomb"
2009 flac_decoder_select="flacdsp"
2010 flac_encoder_select="bswapdsp flacdsp lpc"
2011 flashsv_decoder_deps="zlib"
2012 flashsv_encoder_deps="zlib"
2013 flashsv2_decoder_deps="zlib"
2014 flv_decoder_select="h263_decoder"
2015 flv_encoder_select="h263_encoder"
2016 fourxm_decoder_select="blockdsp bswapdsp"
2017 fraps_decoder_select="bswapdsp huffman"
2018 g2m_decoder_deps="zlib"
2019 g2m_decoder_select="blockdsp idctdsp jpegtables"
2020 h261_decoder_select="mpeg_er mpegvideo"
2021 h261_encoder_select="aandcttables mpegvideoenc"
2022 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2023 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2024 h263i_decoder_select="h263_decoder"
2025 h263p_encoder_select="h263_encoder"
2026 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2027 h264_decoder_suggest="error_resilience"
2028 hap_decoder_select="snappy texturedsp"
2029 hap_encoder_deps="libsnappy"
2030 hap_encoder_select="texturedspenc"
2031 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2032 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2033 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2034 iac_decoder_select="imc_decoder"
2035 imc_decoder_select="bswapdsp fft mdct sinewin"
2036 indeo3_decoder_select="hpeldsp"
2037 indeo4_decoder_select="ividsp"
2038 indeo5_decoder_select="ividsp"
2039 interplay_video_decoder_select="hpeldsp"
2040 jpegls_decoder_select="mjpeg_decoder"
2041 jv_decoder_select="blockdsp"
2042 lagarith_decoder_select="huffyuvdsp"
2043 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2044 magicyuv_decoder_select="huffyuvdsp"
2045 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2046 metasound_decoder_select="lsp mdct sinewin"
2047 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2048 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2049 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2050 mjpegb_decoder_select="mjpeg_decoder"
2051 mlp_decoder_select="mlp_parser"
2052 motionpixels_decoder_select="bswapdsp"
2053 mp1_decoder_select="mpegaudio"
2054 mp1float_decoder_select="mpegaudio"
2055 mp2_decoder_select="mpegaudio"
2056 mp2float_decoder_select="mpegaudio"
2057 mp3_decoder_select="mpegaudio"
2058 mp3adu_decoder_select="mpegaudio"
2059 mp3adufloat_decoder_select="mpegaudio"
2060 mp3float_decoder_select="mpegaudio"
2061 mp3on4_decoder_select="mpegaudio"
2062 mp3on4float_decoder_select="mpegaudio"
2063 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2064 mpc8_decoder_select="mpegaudiodsp"
2065 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2066 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2067 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2068 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2069 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2070 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2071 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2072 mpeg4_encoder_select="h263_encoder"
2073 msa1_decoder_select="mss34dsp"
2074 msmpeg4v1_decoder_select="h263_decoder"
2075 msmpeg4v2_decoder_select="h263_decoder"
2076 msmpeg4v2_encoder_select="h263_encoder"
2077 msmpeg4v3_decoder_select="h263_decoder"
2078 msmpeg4v3_encoder_select="h263_encoder"
2079 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2080 mts2_decoder_select="mss34dsp"
2081 mxpeg_decoder_select="mjpeg_decoder"
2082 nellymoser_decoder_select="mdct sinewin"
2083 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2084 nuv_decoder_select="idctdsp lzo"
2085 on2avc_decoder_select="mdct"
2086 opus_decoder_deps="avresample"
2087 opus_decoder_select="imdct15"
2088 png_decoder_deps="zlib"
2089 png_encoder_deps="zlib"
2090 png_encoder_select="huffyuvencdsp"
2091 prores_decoder_select="idctdsp"
2092 prores_encoder_select="fdctdsp"
2093 qcelp_decoder_select="lsp"
2094 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2095 ra_144_encoder_select="audio_frame_queue lpc"
2096 ralf_decoder_select="golomb"
2097 rscc_decoder_deps="zlib"
2098 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2099 rv10_encoder_select="h263_encoder"
2100 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2101 rv20_encoder_select="h263_encoder"
2102 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2103 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2104 screenpresso_decoder_deps="zlib"
2105 sipr_decoder_select="lsp"
2106 sp5x_decoder_select="mjpeg_decoder"
2107 svq1_decoder_select="hpeldsp"
2108 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2109 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2110 svq3_decoder_suggest="zlib"
2111 tak_decoder_select="audiodsp"
2112 tdsc_decoder_deps="zlib"
2113 tdsc_decoder_select="mjpeg_decoder"
2114 theora_decoder_select="vp3_decoder"
2115 thp_decoder_select="mjpeg_decoder"
2116 tiff_decoder_suggest="zlib"
2117 tiff_encoder_suggest="zlib"
2118 truehd_decoder_select="mlp_decoder"
2119 truemotion2_decoder_select="bswapdsp"
2120 truespeech_decoder_select="bswapdsp"
2121 tscc_decoder_deps="zlib"
2122 txd_decoder_select="texturedsp"
2123 twinvq_decoder_select="mdct lsp sinewin"
2124 utvideo_decoder_select="bswapdsp"
2125 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2126 vble_decoder_select="huffyuvdsp"
2127 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2128 vc1image_decoder_select="vc1_decoder"
2129 vorbis_decoder_select="mdct"
2130 vorbis_encoder_select="mdct"
2131 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2132 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2133 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2134 vp6a_decoder_select="vp6_decoder"
2135 vp6f_decoder_select="vp6_decoder"
2136 vp7_decoder_select="h264pred videodsp vp8dsp"
2137 vp8_decoder_select="h264pred videodsp vp8dsp"
2138 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2139 webp_decoder_select="vp8_decoder"
2140 wmapro_decoder_select="mdct sinewin wma_freqs"
2141 wmav1_decoder_select="mdct sinewin wma_freqs"
2142 wmav1_encoder_select="mdct sinewin wma_freqs"
2143 wmav2_decoder_select="mdct sinewin wma_freqs"
2144 wmav2_encoder_select="mdct sinewin wma_freqs"
2145 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2146 wmv1_decoder_select="h263_decoder"
2147 wmv1_encoder_select="h263_encoder"
2148 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2149 wmv2_encoder_select="h263_encoder wmv2dsp"
2150 wmv3_decoder_select="vc1_decoder"
2151 wmv3image_decoder_select="wmv3_decoder"
2152 zerocodec_decoder_deps="zlib"
2153 zlib_decoder_deps="zlib"
2154 zlib_encoder_deps="zlib"
2155 zmbv_decoder_deps="zlib"
2156 zmbv_encoder_deps="zlib"
2157
2158 # hardware accelerators
2159 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2160 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2161 dxva2_lib_deps="dxva2"
2162 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2163 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2164
2165 h263_vaapi_hwaccel_deps="vaapi"
2166 h263_vaapi_hwaccel_select="h263_decoder"
2167 h264_d3d11va_hwaccel_deps="d3d11va"
2168 h264_d3d11va_hwaccel_select="h264_decoder"
2169 h264_dxva2_hwaccel_deps="dxva2"
2170 h264_dxva2_hwaccel_select="h264_decoder"
2171 h264_mmal_hwaccel_deps="mmal"
2172 h264_qsv_hwaccel_deps="libmfx"
2173 h264_vaapi_hwaccel_deps="vaapi"
2174 h264_vaapi_hwaccel_select="h264_decoder"
2175 h264_vda_hwaccel_deps="vda"
2176 h264_vda_hwaccel_select="h264_decoder"
2177 h264_vda_old_hwaccel_deps="vda"
2178 h264_vda_old_hwaccel_select="h264_decoder"
2179 h264_vdpau_hwaccel_deps="vdpau"
2180 h264_vdpau_hwaccel_select="h264_decoder"
2181 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2182 hevc_d3d11va_hwaccel_select="hevc_decoder"
2183 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2184 hevc_dxva2_hwaccel_select="hevc_decoder"
2185 hevc_qsv_hwaccel_deps="libmfx"
2186 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2187 hevc_vaapi_hwaccel_select="hevc_decoder"
2188 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2189 hevc_vdpau_hwaccel_select="hevc_decoder"
2190 mpeg1_vdpau_hwaccel_deps="vdpau"
2191 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2192 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2193 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2194 mpeg2_dxva2_hwaccel_deps="dxva2"
2195 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2196 mpeg2_mmal_hwaccel_deps="mmal"
2197 mpeg2_qsv_hwaccel_deps="libmfx"
2198 mpeg2_vaapi_hwaccel_deps="vaapi"
2199 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2200 mpeg2_vdpau_hwaccel_deps="vdpau"
2201 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2202 mpeg4_vaapi_hwaccel_deps="vaapi"
2203 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2204 mpeg4_vdpau_hwaccel_deps="vdpau"
2205 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2206 vc1_d3d11va_hwaccel_deps="d3d11va"
2207 vc1_d3d11va_hwaccel_select="vc1_decoder"
2208 vc1_dxva2_hwaccel_deps="dxva2"
2209 vc1_dxva2_hwaccel_select="vc1_decoder"
2210 vc1_mmal_hwaccel_deps="mmal"
2211 vc1_qsv_hwaccel_deps="libmfx"
2212 vc1_vaapi_hwaccel_deps="vaapi"
2213 vc1_vaapi_hwaccel_select="vc1_decoder"
2214 vc1_vdpau_hwaccel_deps="vdpau"
2215 vc1_vdpau_hwaccel_select="vc1_decoder"
2216 vp8_qsv_hwaccel_deps="libmfx"
2217 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2218 vp8_vaapi_hwaccel_select="vp8_decoder"
2219 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2220 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2221 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2222 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2223
2224 # hardware-accelerated codecs
2225 nvenc_deps_any="dlopen LoadLibrary"
2226 nvenc_extralibs='$ldl'
2227 omx_deps="dlopen pthreads"
2228 omx_extralibs='$ldl'
2229 omx_rpi_select="omx"
2230 qsvdec_select="qsv"
2231 qsvenc_select="qsv"
2232 vaapi_encode_deps="vaapi"
2233
2234 hwupload_cuda_filter_deps="cuda"
2235 scale_npp_filter_deps="cuda libnpp"
2236
2237 h264_mmal_decoder_deps="mmal"
2238 h264_nvenc_encoder_deps="nvenc"
2239 h264_omx_encoder_deps="omx"
2240 h264_qsv_decoder_deps="libmfx"
2241 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2242 h264_qsv_encoder_deps="libmfx"
2243 h264_qsv_encoder_select="qsvenc"
2244 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2245 h264_vaapi_encoder_select="vaapi_encode golomb"
2246 hevc_nvenc_encoder_deps="nvenc"
2247 hevc_qsv_decoder_deps="libmfx"
2248 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2249 hevc_qsv_encoder_deps="libmfx"
2250 hevc_qsv_encoder_select="hevc_ps qsvenc"
2251 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2252 hevc_vaapi_encoder_select="vaapi_encode golomb"
2253 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2254 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2255 mpeg2_mmal_decoder_deps="mmal"
2256 mpeg2_qsv_decoder_deps="libmfx"
2257 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2258 mpeg2_qsv_encoder_deps="libmfx"
2259 mpeg2_qsv_encoder_select="qsvenc"
2260 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2261 mpeg2_vaapi_encoder_select="vaapi_encode"
2262 mpeg4_omx_encoder_deps="omx"
2263 vc1_mmal_decoder_deps="mmal"
2264 vc1_qsv_decoder_deps="libmfx"
2265 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2266 vp8_qsv_decoder_deps="libmfx"
2267 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2268 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2269 vp8_vaapi_encoder_select="vaapi_encode"
2270
2271 nvenc_h264_encoder_select="h264_nvenc_encoder"
2272 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2273
2274 # parsers
2275 h264_parser_select="golomb h264dsp h264parse"
2276 hevc_parser_select="hevc_ps"
2277 mpegaudio_parser_select="mpegaudioheader"
2278 mpegvideo_parser_select="mpegvideo"
2279 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2280 vc1_parser_select="vc1dsp"
2281
2282 # bitstream_filters
2283 mjpeg2jpeg_bsf_select="jpegtables"
2284
2285 # external libraries
2286 avisynth_deps="LoadLibrary"
2287 avxsynth_deps="dlopen"
2288 avisynth_demuxer_deps_any="avisynth avxsynth"
2289 avisynth_demuxer_select="riffdec"
2290 libdcadec_decoder_deps="libdcadec"
2291 libfaac_encoder_deps="libfaac"
2292 libfaac_encoder_select="audio_frame_queue"
2293 libfdk_aac_decoder_deps="libfdk_aac"
2294 libfdk_aac_encoder_deps="libfdk_aac"
2295 libfdk_aac_encoder_select="audio_frame_queue"
2296 libgsm_decoder_deps="libgsm"
2297 libgsm_encoder_deps="libgsm"
2298 libgsm_ms_decoder_deps="libgsm"
2299 libgsm_ms_encoder_deps="libgsm"
2300 libilbc_decoder_deps="libilbc"
2301 libilbc_encoder_deps="libilbc"
2302 libkvazaar_encoder_deps="libkvazaar"
2303 libmp3lame_encoder_deps="libmp3lame"
2304 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2305 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2306 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2307 libopencore_amrnb_encoder_select="audio_frame_queue"
2308 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2309 libopenh264_decoder_deps="libopenh264"
2310 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2311 libopenh264_encoder_deps="libopenh264"
2312 libopenjpeg_decoder_deps="libopenjpeg"
2313 libopenjpeg_encoder_deps="libopenjpeg"
2314 libopus_decoder_deps="libopus"
2315 libopus_encoder_deps="libopus"
2316 libopus_encoder_select="audio_frame_queue"
2317 libschroedinger_decoder_deps="libschroedinger"
2318 libschroedinger_encoder_deps="libschroedinger"
2319 libspeex_decoder_deps="libspeex"
2320 libspeex_encoder_deps="libspeex"
2321 libspeex_encoder_select="audio_frame_queue"
2322 libtheora_encoder_deps="libtheora"
2323 libtwolame_encoder_deps="libtwolame"
2324 libvo_aacenc_encoder_deps="libvo_aacenc"
2325 libvo_aacenc_encoder_select="audio_frame_queue"
2326 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2327 libvorbis_encoder_deps="libvorbis"
2328 libvorbis_encoder_select="audio_frame_queue"
2329 libvpx_vp8_decoder_deps="libvpx"
2330 libvpx_vp8_encoder_deps="libvpx"
2331 libvpx_vp9_decoder_deps="libvpx"
2332 libvpx_vp9_encoder_deps="libvpx"
2333 libwavpack_encoder_deps="libwavpack"
2334 libwavpack_encoder_select="audio_frame_queue"
2335 libwebp_encoder_deps="libwebp"
2336 libx262_encoder_deps="libx262"
2337 libx264_encoder_deps="libx264"
2338 libx265_encoder_deps="libx265"
2339 libxavs_encoder_deps="libxavs"
2340 libxvid_encoder_deps="libxvid mkstemp"
2341
2342 # demuxers / muxers
2343 ac3_demuxer_select="ac3_parser"
2344 asf_demuxer_select="riffdec"
2345 asf_muxer_select="riffenc"
2346 asf_stream_muxer_select="asf_muxer"
2347 avi_demuxer_select="iso_media riffdec"
2348 avi_muxer_select="riffenc"
2349 caf_demuxer_select="iso_media riffdec"
2350 dash_muxer_select="mp4_muxer"
2351 dirac_demuxer_select="dirac_parser"
2352 dv_demuxer_select="dvprofile"
2353 dv_muxer_select="dvprofile"
2354 dxa_demuxer_select="riffdec"
2355 eac3_demuxer_select="ac3_parser"
2356 f4v_muxer_select="mov_muxer"
2357 flac_demuxer_select="flac_parser"
2358 hds_muxer_select="flv_muxer"
2359 hls_muxer_select="mpegts_muxer"
2360 ipod_muxer_select="mov_muxer"
2361 ismv_muxer_select="mov_muxer"
2362 matroska_audio_muxer_select="matroska_muxer"
2363 matroska_demuxer_select="iso_media riffdec"
2364 matroska_demuxer_suggest="bzlib lzo zlib"
2365 matroska_muxer_select="iso_media riffenc"
2366 mmf_muxer_select="riffenc"
2367 mov_demuxer_select="iso_media riffdec"
2368 mov_demuxer_suggest="zlib"
2369 mov_muxer_select="iso_media riffenc rtpenc_chain"
2370 mp3_demuxer_select="mpegaudio_parser"
2371 mp3_muxer_select="mpegaudioheader"
2372 mp4_muxer_select="mov_muxer"
2373 mpegts_demuxer_select="iso_media"
2374 mpegts_muxer_select="adts_muxer latm_muxer"
2375 mpegtsraw_demuxer_select="mpegts_demuxer"
2376 mxf_d10_muxer_select="mxf_muxer"
2377 nut_muxer_select="riffenc"
2378 nuv_demuxer_select="riffdec"
2379 oga_muxer_select="ogg_muxer"
2380 ogg_demuxer_select="dirac_parse"
2381 opus_muxer_select="ogg_muxer"
2382 psp_muxer_select="mov_muxer"
2383 rtp_demuxer_select="sdp_demuxer"
2384 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2385 rtsp_demuxer_select="http_protocol rtpdec"
2386 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2387 sap_demuxer_select="sdp_demuxer"
2388 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2389 sdp_demuxer_select="rtpdec"
2390 smoothstreaming_muxer_select="ismv_muxer"
2391 spdif_muxer_select="aac_parser"
2392 spx_muxer_select="ogg_muxer"
2393 swf_demuxer_suggest="zlib"
2394 tak_demuxer_select="tak_parser"
2395 tg2_muxer_select="mov_muxer"
2396 tgp_muxer_select="mov_muxer"
2397 w64_demuxer_select="wav_demuxer"
2398 wav_demuxer_select="riffdec"
2399 wav_muxer_select="riffenc"
2400 webm_muxer_select="iso_media riffenc"
2401 wtv_demuxer_select="mpegts_demuxer riffdec"
2402 xmv_demuxer_select="riffdec"
2403 xwma_demuxer_select="riffdec"
2404
2405 # indevs / outdevs
2406 alsa_indev_deps="alsa"
2407 alsa_outdev_deps="alsa"
2408 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2409 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2410 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2411 dv1394_indev_deps="dv1394"
2412 dv1394_indev_select="dv_demuxer"
2413 fbdev_indev_deps="linux_fb_h"
2414 jack_indev_deps="jack"
2415 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2416 libcdio_indev_deps="libcdio"
2417 libdc1394_indev_deps="libdc1394"
2418 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2419 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2420 pulse_indev_deps="libpulse"
2421 sndio_indev_deps="sndio"
2422 sndio_outdev_deps="sndio"
2423 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2424 vfwcap_indev_deps="vfw32 vfwcap_defines"
2425 xcbgrab_indev_deps="libxcb libxcb_shape"
2426 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2427
2428 # protocols
2429 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2430 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2431 ffrtmpcrypt_protocol_select="tcp_protocol"
2432 ffrtmphttp_protocol_conflict="librtmp_protocol"
2433 ffrtmphttp_protocol_select="http_protocol"
2434 gopher_protocol_select="network"
2435 http_protocol_select="tcp_protocol"
2436 httpproxy_protocol_select="tcp_protocol"
2437 https_protocol_select="tls_protocol"
2438 icecast_protocol_select="http_protocol"
2439 librtmp_protocol_deps="librtmp"
2440 librtmpe_protocol_deps="librtmp"
2441 librtmps_protocol_deps="librtmp"
2442 librtmpt_protocol_deps="librtmp"
2443 librtmpte_protocol_deps="librtmp"
2444 mmsh_protocol_select="http_protocol"
2445 mmst_protocol_select="network"
2446 rtmp_protocol_conflict="librtmp_protocol"
2447 rtmp_protocol_select="tcp_protocol"
2448 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2449 rtmps_protocol_conflict="librtmp_protocol"
2450 rtmps_protocol_select="tls_protocol"
2451 rtmpt_protocol_select="ffrtmphttp_protocol"
2452 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2453 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2454 rtp_protocol_select="udp_protocol"
2455 sctp_protocol_deps="struct_sctp_event_subscribe"
2456 sctp_protocol_select="network"
2457 srtp_protocol_select="rtp_protocol srtp"
2458 tcp_protocol_select="network"
2459 tls_gnutls_protocol_deps="gnutls"
2460 tls_gnutls_protocol_select="tcp_protocol"
2461 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2462 tls_openssl_protocol_deps="openssl"
2463 tls_openssl_protocol_select="tcp_protocol"
2464 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2465 udp_protocol_select="network"
2466 unix_protocol_deps="sys_un_h"
2467 unix_protocol_select="network"
2468
2469 # filters
2470 asyncts_filter_deps="avresample"
2471 blackframe_filter_deps="gpl"
2472 boxblur_filter_deps="gpl"
2473 bs2b_filter_deps="libbs2b"
2474 cropdetect_filter_deps="gpl"
2475 deinterlace_qsv_filter_deps="libmfx"
2476 deinterlace_vaapi_filter_deps="vaapi"
2477 delogo_filter_deps="gpl"
2478 drawtext_filter_deps="libfreetype"
2479 drawtext_filter_suggest="libfontconfig"
2480 frei0r_filter_deps="frei0r dlopen"
2481 frei0r_filter_extralibs='$ldl'
2482 frei0r_src_filter_deps="frei0r dlopen"
2483 frei0r_src_filter_extralibs='$ldl'
2484 hdcd_filter_deps="libhdcd"
2485 hqdn3d_filter_deps="gpl"
2486 interlace_filter_deps="gpl"
2487 movie_filter_deps="avcodec avformat"
2488 ocv_filter_deps="libopencv"
2489 resample_filter_deps="avresample"
2490 scale_filter_deps="swscale"
2491 scale_qsv_filter_deps="libmfx"
2492 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2493
2494 # examples
2495 decode_audio_example_deps="avcodec avutil"
2496 decode_video_example_deps="avcodec avutil"
2497 encode_audio_example_deps="avcodec avutil"
2498 encode_video_example_deps="avcodec avutil"
2499 filter_audio_example_deps="avfilter avutil"
2500 metadata_example_deps="avformat avutil"
2501 output_example_deps="avcodec avformat avresample avutil swscale"
2502 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2503 transcode_aac_example_deps="avcodec avformat avresample"
2504
2505 # libraries, in linking order
2506 avcodec_deps="avutil"
2507 avcodec_select="null_bsf"
2508 avdevice_deps="avformat avcodec avutil"
2509 avfilter_deps="avutil"
2510 avformat_deps="avcodec avutil"
2511 avformat_suggest="network"
2512 avresample_deps="avutil"
2513 swscale_deps="avutil"
2514
2515 # programs
2516 avconv_deps="avcodec avfilter avformat avresample swscale"
2517 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2518                fps_filter null_filter resample_filter scale_filter
2519                trim_filter"
2520 avplay_deps="avcodec avfilter avformat avresample sdl"
2521 avplay_extralibs='$sdl_extralibs'
2522 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2523 avprobe_deps="avcodec avformat"
2524
2525 # documentation
2526 pod2man_deps="doc"
2527 texi2html_deps="doc"
2528
2529 # default parameters
2530
2531 logfile="avbuild/config.log"
2532
2533 # installation paths
2534 prefix_default="/usr/local"
2535 bindir_default='${prefix}/bin'
2536 datadir_default='${prefix}/share/avconv'
2537 docdir_default='${prefix}/share/doc/libav'
2538 incdir_default='${prefix}/include'
2539 libdir_default='${prefix}/lib'
2540 mandir_default='${prefix}/share/man'
2541 shlibdir_default="$libdir_default"
2542
2543 # toolchain
2544 ar_default="ar"
2545 cc_default="gcc"
2546 host_cc_default="gcc"
2547 ln_s="ln -s -f"
2548 nm_default="nm -g"
2549 objformat="elf"
2550 pkg_config_default=pkg-config
2551 ranlib="ranlib"
2552 strip="strip"
2553 version_script='--version-script'
2554 yasmexe="yasm"
2555
2556 # machine
2557 arch_default=$(uname -m)
2558 cpu="generic"
2559 intrinsics="none"
2560
2561 # OS
2562 target_os_default=$(tolower $(uname -s))
2563 host_os=$target_os_default
2564
2565 # configurable options
2566 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2567
2568 enable asm
2569 enable debug
2570 enable doc
2571 enable faan faandct faanidct
2572 enable optimizations
2573 enable safe_bitstream_reader
2574 enable static
2575 enable swscale_alpha
2576 enable valgrind_backtrace
2577
2578 # By default, enable only those hwaccels that have no external dependencies.
2579 enable d3d11va dxva2 vda vdpau
2580
2581 # Avoid external, non-system, libraries getting enabled by dependency resolution
2582 disable $EXTERNAL_LIBRARY_LIST
2583
2584 # build settings
2585 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2586 LIBPREF="lib"
2587 LIBSUF=".a"
2588 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2589 SLIBPREF="lib"
2590 SLIBSUF=".so"
2591 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2592 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2593 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2594 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2595 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2596 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2597 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2598
2599 asflags_filter=echo
2600 cflags_filter=echo
2601 ldflags_filter=echo
2602
2603 AS_C='-c'
2604 AS_O='-o $@'
2605 CC_C='-c'
2606 CC_E='-E -o $@'
2607 CC_O='-o $@'
2608 OBJCC_C='-c'
2609 OBJCC_E='-E -o $@'
2610 OBJCC_O='-o $@'
2611 LD_O='-o $@'
2612 LD_LIB='-l%'
2613 LD_PATH='-L'
2614 HOSTCC_C='-c'
2615 HOSTCC_E='-E -o $@'
2616 HOSTCC_O='-o $@'
2617 HOSTLD_O='-o $@'
2618
2619 host_extralibs='-lm'
2620 host_cflags_filter=echo
2621 host_ldflags_filter=echo
2622
2623 target_path='$(CURDIR)'
2624
2625 # since the object filename is not given with the -MM flag, the compiler
2626 # is only able to print the basename, and we must add the path ourselves
2627 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2628 DEPFLAGS='-MM'
2629
2630 mkdir -p avbuild
2631
2632 # find source path
2633 if test -f configure; then
2634     source_path=.
2635 else
2636     source_path=$(cd $(dirname "$0"); pwd)
2637     echo "$source_path" | grep -q '[[:blank:]]' &&
2638         die "Out of tree builds are impossible with whitespace in source path."
2639     test -e "$source_path/config.h" &&
2640         die "Out of tree builds are impossible with config.h in source dir."
2641 fi
2642
2643 for v in "$@"; do
2644     r=${v#*=}
2645     l=${v%"$r"}
2646     r=$(sh_quote "$r")
2647     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2648 done
2649
2650 find_things(){
2651     thing=$1
2652     pattern=$2
2653     file=$source_path/$3
2654     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2655 }
2656
2657 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2658 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2659 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2660 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2661 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2662 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2663 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2664 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2665 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2666
2667 find_things_extern(){
2668     thing=$1
2669     pattern=$2
2670     file=$source_path/$3
2671     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2672 }
2673
2674 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2675 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2676
2677 ALL_COMPONENTS="
2678     $BSF_LIST
2679     $DECODER_LIST
2680     $DEMUXER_LIST
2681     $ENCODER_LIST
2682     $FILTER_LIST
2683     $HWACCEL_LIST
2684     $INDEV_LIST
2685     $MUXER_LIST
2686     $OUTDEV_LIST
2687     $PARSER_LIST
2688     $PROTOCOL_LIST
2689 "
2690
2691 for n in $COMPONENT_LIST; do
2692     v=$(toupper ${n%s})_LIST
2693     eval enable \$$v
2694     eval ${n}_if_any="\$$v"
2695 done
2696
2697 enable $ARCH_EXT_LIST
2698
2699 die_unknown(){
2700     echo "Unknown option \"$1\"."
2701     echo "See $0 --help for available options."
2702     exit 1
2703 }
2704
2705 print_3_columns() {
2706     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2707 }
2708
2709 show_list() {
2710     suffix=_$1
2711     shift
2712     echo $* | sed s/$suffix//g | print_3_columns
2713     exit 0
2714 }
2715
2716 rand_list(){
2717     IFS=', '
2718     set -- $*
2719     unset IFS
2720     for thing; do
2721         comp=${thing%:*}
2722         prob=${thing#$comp}
2723         prob=${prob#:}
2724         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2725         echo "prob ${prob:-0.5}"
2726         printf '%s\n' $comp
2727     done
2728 }
2729
2730 do_random(){
2731     action=$1
2732     shift
2733     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2734     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2735 }
2736
2737 for opt do
2738     optval="${opt#*=}"
2739     case "$opt" in
2740         --extra-ldflags=*)
2741             add_ldflags $optval
2742         ;;
2743         --extra-ldexeflags=*)
2744             add_ldexeflags $optval
2745         ;;
2746         --extra-libs=*)
2747             add_extralibs $optval
2748         ;;
2749         --disable-devices)
2750             disable $INDEV_LIST $OUTDEV_LIST
2751         ;;
2752         --enable-debug=*)
2753             debuglevel="$optval"
2754         ;;
2755         --disable-programs)
2756             disable $PROGRAM_LIST
2757         ;;
2758         --disable-everything)
2759             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2760         ;;
2761         --disable-all)
2762             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2763             disable $LIBRARY_LIST $PROGRAM_LIST doc
2764         ;;
2765         --enable-random|--disable-random)
2766             action=${opt%%-random}
2767             do_random ${action#--} $COMPONENT_LIST
2768         ;;
2769         --enable-random=*|--disable-random=*)
2770             action=${opt%%-random=*}
2771             do_random ${action#--} $optval
2772         ;;
2773         --enable-*=*|--disable-*=*)
2774             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2775             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2776             eval list=\$$(toupper $thing)_LIST
2777             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2778             $action $(filter "$name" $list)
2779         ;;
2780         --enable-avserver|--disable-avserver*)
2781             warn "avserver has been removed, the ${opt} option is only"\
2782                  "provided for compatibility and will be removed in the future"
2783         ;;
2784         --enable-?*|--disable-?*)
2785             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2786             if is_in $option $COMPONENT_LIST; then
2787                 test $action = disable && action=unset
2788                 eval $action \$$(toupper ${option%s})_LIST
2789             elif is_in $option $CMDLINE_SELECT; then
2790                 $action $option
2791             else
2792                 die_unknown $opt
2793             fi
2794         ;;
2795         --list-*)
2796             NAME="${opt#--list-}"
2797             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2798             NAME=${NAME%s}
2799             eval show_list $NAME \$$(toupper $NAME)_LIST
2800         ;;
2801         --help|-h) show_help
2802         ;;
2803         --quiet|-q) quiet=yes
2804         ;;
2805         *)
2806             optname="${opt%%=*}"
2807             optname="${optname#--}"
2808             optname=$(echo "$optname" | sed 's/-/_/g')
2809             if is_in $optname $CMDLINE_SET; then
2810                 eval $optname='$optval'
2811             elif is_in $optname $CMDLINE_APPEND; then
2812                 append $optname "$optval"
2813             else
2814                 die_unknown $opt
2815             fi
2816         ;;
2817     esac
2818 done
2819
2820 for e in $env; do
2821     eval "export $e"
2822 done
2823
2824 disabled logging && logfile=/dev/null
2825
2826 # Die early if licensing-related configure options are incompatible.
2827 die_license_disabled() {
2828     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2829 }
2830
2831 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2832 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2833 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2834
2835 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2836
2837 # Disable all the library-specific components if the library itself
2838 # is disabled, see AVCODEC_LIST and following _LIST variables.
2839
2840 disable_components(){
2841     disabled ${1} && disable $(
2842         eval components="\$$(toupper ${1})_COMPONENTS"
2843         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2844     )
2845 }
2846
2847 map 'disable_components $v' $LIBRARY_LIST
2848
2849 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2850 set >> $logfile
2851
2852 case "$toolchain" in
2853     *-asan)
2854         cc_default="${toolchain%-asan}"
2855         add_cflags  -fsanitize=address
2856         add_ldflags -fsanitize=address
2857     ;;
2858     *-msan)
2859         cc_default="${toolchain%-msan}"
2860         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2861         add_ldflags -fsanitize=memory
2862     ;;
2863     *-tsan)
2864         cc_default="${toolchain%-tsan}"
2865         add_cflags  -fsanitize=thread -fPIE
2866         add_ldflags -fsanitize=thread -pie
2867         case "$toolchain" in
2868             gcc-tsan)
2869                 add_cflags  -fPIC
2870                 add_ldflags -fPIC
2871                 ;;
2872         esac
2873     ;;
2874     *-usan)
2875         cc_default="${toolchain%-usan}"
2876         add_cflags  -fsanitize=undefined
2877         add_ldflags -fsanitize=undefined
2878         case "$toolchain" in
2879             clang-usan)
2880                 add_cflags -O1
2881                 ;;
2882         esac
2883     ;;
2884     valgrind-*)
2885         target_exec_default="valgrind"
2886         case "$toolchain" in
2887             valgrind-massif)
2888                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2889                 ;;
2890             valgrind-memcheck)
2891                 target_exec_args="--track-origins=yes --leak-check=full"
2892                 ;;
2893         esac
2894     ;;
2895     msvc)
2896         # Check whether the current MSVC version needs the C99 converter.
2897         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2898         # support enough of C99 to build libav. Default to the new
2899         # behaviour if the regexp was unable to match anything, since this
2900         # successfully parses the version number of existing supported
2901         # versions that require the converter (MSVC 2010 and 2012).
2902         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2903         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2904             cc_default="cl"
2905         else
2906             cc_default="c99wrap cl"
2907         fi
2908         ld_default="$source_path/compat/windows/mslink"
2909         nm_default="dumpbin -symbols"
2910         ar_default="lib"
2911         case "$arch" in
2912         arm*)
2913             as_default="armasm"
2914             ;;
2915         esac
2916         target_os_default="win32"
2917         # Use a relative path for TMPDIR. This makes sure all the
2918         # ffconf temp files are written with a relative path, avoiding
2919         # issues with msys/win32 path conversion for MSVC parameters
2920         # such as -Fo<file> or -out:<file>.
2921         TMPDIR=.
2922     ;;
2923     icl)
2924         cc_default="icl"
2925         ld_default="xilink"
2926         nm_default="dumpbin -symbols"
2927         ar_default="xilib"
2928         target_os_default="win32"
2929         TMPDIR=.
2930     ;;
2931     gcov)
2932         add_cflags  -fprofile-arcs -ftest-coverage
2933         add_ldflags -fprofile-arcs -ftest-coverage
2934     ;;
2935     llvm-cov)
2936         add_cflags -fprofile-arcs -ftest-coverage
2937         add_ldflags --coverage
2938     ;;
2939     hardened)
2940         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2941         add_cflags   -fno-strict-overflow -fstack-protector-all
2942         add_ldflags  -Wl,-z,relro -Wl,-z,now
2943     ;;
2944     ?*)
2945         die "Unknown toolchain $toolchain"
2946     ;;
2947 esac
2948
2949 test -n "$cross_prefix" && enable cross_compile
2950
2951 if enabled cross_compile; then
2952     test -n "$arch" && test -n "$target_os" ||
2953         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2954 fi
2955
2956 ar_default="${cross_prefix}${ar_default}"
2957 cc_default="${cross_prefix}${cc_default}"
2958 occ_default="${cross_prefix}${occ_default}"
2959 nm_default="${cross_prefix}${nm_default}"
2960 pkg_config_default="${cross_prefix}${pkg_config_default}"
2961 ranlib="${cross_prefix}${ranlib}"
2962 strip="${cross_prefix}${strip}"
2963
2964 sysinclude_default="${sysroot}/usr/include"
2965
2966 set_default arch cc pkg_config sysinclude target_exec target_os
2967 enabled cross_compile || host_cc_default=$cc
2968 set_default host_cc
2969
2970 if ! $pkg_config --version >/dev/null 2>&1; then
2971     warn "$pkg_config not found, library detection may fail."
2972     pkg_config=false
2973 fi
2974
2975 exesuf() {
2976     case $1 in
2977         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2978     esac
2979 }
2980
2981 EXESUF=$(exesuf $target_os)
2982 HOSTEXESUF=$(exesuf $host_os)
2983
2984 # set temporary file name
2985 : ${TMPDIR:=$TEMPDIR}
2986 : ${TMPDIR:=$TMP}
2987 : ${TMPDIR:=/tmp}
2988
2989 if ! check_cmd mktemp -u XXXXXX; then
2990     # simple replacement for missing mktemp
2991     # NOT SAFE FOR GENERAL USE
2992     mktemp(){
2993         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2994         echo "$tmpname"
2995         mkdir "$tmpname"
2996     }
2997 fi
2998
2999 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3000     die "Unable to create temporary directory in $TMPDIR."
3001
3002 tmpfile(){
3003     tmp="${AVTMPDIR}/test"$2
3004     (set -C; exec > $tmp) 2> /dev/null ||
3005         die "Unable to create temporary file in $AVTMPDIR."
3006     eval $1=$tmp
3007 }
3008
3009 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3010 trap 'exit 2' INT
3011
3012 tmpfile TMPASM .asm
3013 tmpfile TMPC   .c
3014 tmpfile TMPE   $EXESUF
3015 tmpfile TMPH   .h
3016 tmpfile TMPO   .o
3017 tmpfile TMPS   .S
3018 tmpfile TMPSH  .sh
3019 tmpfile TMPV   .ver
3020
3021 unset -f mktemp
3022
3023 chmod +x $TMPE
3024
3025 # make sure we can execute files in $TMPDIR
3026 cat > $TMPSH 2>> $logfile <<EOF
3027 #! /bin/sh
3028 EOF
3029 chmod +x $TMPSH >> $logfile 2>&1
3030 if ! $TMPSH >> $logfile 2>&1; then
3031     cat <<EOF
3032 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3033 variable to another directory and make sure that it is not mounted noexec.
3034 EOF
3035     die "Sanity test failed."
3036 fi
3037
3038 armasm_flags(){
3039     for flag; do
3040         case $flag in
3041             # Filter out MSVC cl.exe options from cflags that shouldn't
3042             # be passed to gas-preprocessor
3043             -M[TD]*)                                            ;;
3044             *)                  echo $flag                      ;;
3045         esac
3046    done
3047 }
3048
3049 ccc_flags(){
3050     for flag; do
3051         case $flag in
3052             -std=c99)           echo -c99                       ;;
3053             -mcpu=*)            echo -arch ${flag#*=}           ;;
3054             -mieee)             echo -ieee                      ;;
3055             -O*|-fast)          echo $flag                      ;;
3056             -fno-math-errno)    echo -assume nomath_errno       ;;
3057             -g)                 echo -g3                        ;;
3058             -Wall)              echo -msg_enable level2         ;;
3059             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3060             -Wl,*)              echo $flag                      ;;
3061             -f*|-W*)                                            ;;
3062             *)                  echo $flag                      ;;
3063         esac
3064    done
3065 }
3066
3067 cparser_flags(){
3068     for flag; do
3069         case $flag in
3070             -Wno-switch)             echo -Wno-switch-enum ;;
3071             -Wno-format-zero-length) ;;
3072             -Wdisabled-optimization) ;;
3073             -Wno-pointer-sign)       echo -Wno-other ;;
3074             *)                       echo $flag ;;
3075         esac
3076     done
3077 }
3078
3079 msvc_common_flags(){
3080     for flag; do
3081         case $flag in
3082             # In addition to specifying certain flags under the compiler
3083             # specific filters, they must be specified here as well or else the
3084             # generic catch all at the bottom will print the original flag.
3085             -Wall)                ;;
3086             -Wextra)              ;;
3087             -std=c99)             ;;
3088             # Common flags
3089             -fomit-frame-pointer) ;;
3090             -g)                   echo -Z7 ;;
3091             -fno-math-errno)      ;;
3092             -fno-common)          ;;
3093             -fno-signed-zeros)    ;;
3094             -fPIC)                ;;
3095             -mthumb)              ;;
3096             -march=*)             ;;
3097             -lz)                  echo zlib.lib ;;
3098             -lx264)               echo libx264.lib ;;
3099             -l*)                  echo ${flag#-l}.lib ;;
3100             -L*)                  echo -libpath:${flag#-L} ;;
3101             *)                    echo $flag ;;
3102         esac
3103     done
3104 }
3105
3106 msvc_flags(){
3107     msvc_common_flags "$@"
3108     for flag; do
3109         case $flag in
3110             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3111                                        -wd4554 ;;
3112             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3113                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3114                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3115                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3116         esac
3117     done
3118 }
3119
3120 icl_flags(){
3121     msvc_common_flags "$@"
3122     for flag; do
3123         case $flag in
3124             # Despite what Intel's documentation says -Wall, which is supported
3125             # on Windows, does enable remarks so disable them here.
3126             -Wall)                echo $flag -Qdiag-disable:remark ;;
3127             -std=c99)             echo -Qstd=c99 ;;
3128         esac
3129     done
3130 }
3131
3132 pgi_flags(){
3133     for flag; do
3134         case $flag in
3135             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3136             -fomit-frame-pointer) echo -Mnoframe ;;
3137             -g)                   echo -gopt ;;
3138             *)                    echo $flag ;;
3139         esac
3140     done
3141 }
3142
3143 suncc_flags(){
3144     for flag; do
3145         case $flag in
3146             -march=*|-mcpu=*)
3147                 case "${flag#*=}" in
3148                     native)                   echo -xtarget=native       ;;
3149                     v9|niagara)               echo -xarch=sparc          ;;
3150                     ultrasparc)               echo -xarch=sparcvis       ;;
3151                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3152                     i586|pentium)             echo -xchip=pentium        ;;
3153                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3154                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3155                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3156                     pentium4*)          echo -xtarget=pentium4           ;;
3157                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3158                     *-sse3)             echo -xarch=sse3                 ;;
3159                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3160                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3161                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3162                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3163                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3164                     k8|opteron|athlon64|athlon-fx)
3165                                                echo -xarch=sse2a         ;;
3166                     athlon*)                   echo -xarch=pentium_proa  ;;
3167                 esac
3168                 ;;
3169             -std=c99)             echo -xc99              ;;
3170             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3171             -fPIC)                echo -KPIC -xcode=pic32 ;;
3172             -W*,*)                echo $flag              ;;
3173             -f*-*|-W*|-mimpure-text)                      ;;
3174             -shared)              echo -G                 ;;
3175             *)                    echo $flag              ;;
3176         esac
3177     done
3178 }
3179
3180 tms470_flags(){
3181     for flag; do
3182         case $flag in
3183             -march=*|-mcpu=*)
3184                 case "${flag#*=}" in
3185                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3186                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3187                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3188                     armv6*|arm11*)          echo -mv=6   ;;
3189                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3190                                             echo -mv=5e  ;;
3191                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3192                 esac
3193                 ;;
3194             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3195             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3196             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3197             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3198             -msoft-float)   echo --float_support=vfplib       ;;
3199             -O[0-3]|-mf=*)  echo $flag                        ;;
3200             -g)             echo -g -mn                       ;;
3201             -pds=*)         echo $flag                        ;;
3202             -D*|-I*)        echo $flag                        ;;
3203             --gcc|--abi=*)  echo $flag                        ;;
3204             -me)            echo $flag                        ;;
3205         esac
3206     done
3207 }
3208
3209 probe_cc(){
3210     pfx=$1
3211     _cc=$2
3212
3213     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3214     unset _ld_o _ldflags _ld_lib _ld_path
3215     unset _depflags _DEPCMD _DEPFLAGS
3216     _flags_filter=echo
3217
3218     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3219         _type=llvm_gcc
3220         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3221         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3223         _cflags_speed='-O3'
3224         _cflags_size='-Os'
3225     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3226         _type=gcc
3227         gcc_version=$($_cc --version | head -n1)
3228         gcc_basever=$($_cc -dumpversion)
3229         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3230         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3231         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3232         if ! $_cc -dumpversion | grep -q '^2\.'; then
3233             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3234         fi
3235         _cflags_speed='-O3'
3236         _cflags_size='-Os'
3237     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3238         _type=icc
3239         _ident=$($_cc --version | head -n1)
3240         _depflags='-MMD'
3241         _cflags_speed='-O3'
3242         _cflags_size='-Os'
3243         _cflags_noopt='-O1'
3244     elif $_cc -v 2>&1 | grep -q xlc; then
3245         _type=xlc
3246         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3247         _cflags_speed='-O5'
3248         _cflags_size='-O5 -qcompact'
3249     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3250         _type=ccc
3251         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3252         _DEPFLAGS='-M'
3253         _cflags_speed='-fast'
3254         _cflags_size='-O1'
3255         _flags_filter=ccc_flags
3256     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3257         test -d "$sysroot" || die "No valid sysroot specified."
3258         _type=armcc
3259         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3260         armcc_conf="$PWD/armcc.conf"
3261         $_cc --arm_linux_configure                 \
3262              --arm_linux_config_file="$armcc_conf" \
3263              --configure_sysroot="$sysroot"        \
3264              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3265              die "Error creating armcc configuration file."
3266         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3267         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3268         as_default="${cross_prefix}gcc"
3269         _depflags='-MMD'
3270         _cflags_speed='-O3'
3271         _cflags_size='-Os'
3272     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3273         _type=tms470
3274         _ident=$($_cc -version | head -n1 | tr -s ' ')
3275         _flags='--gcc --abi=eabi -me'
3276         _cc_e='-ppl -fe=$@'
3277         _cc_o='-fe=$@'
3278         _depflags='-ppa -ppd=$(@:.o=.d)'
3279         _cflags_speed='-O3 -mf=5'
3280         _cflags_size='-O3 -mf=2'
3281         _flags_filter=tms470_flags
3282     elif $_cc -v 2>&1 | grep -q clang; then
3283         _type=clang
3284         _ident=$($_cc --version 2>/dev/null | head -n1)
3285         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc -V 2>&1 | grep -q Sun; then
3289         _type=suncc
3290         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3291         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3292         _DEPFLAGS='-xM1 -xc99'
3293         _ldflags='-std=c99'
3294         _cflags_speed='-O5'
3295         _cflags_size='-O5 -xspace'
3296         _flags_filter=suncc_flags
3297     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3298         _type=pathscale
3299         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3300         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3301         _cflags_speed='-O2'
3302         _cflags_size='-Os'
3303         _flags_filter='filter_out -Wdisabled-optimization'
3304     elif $_cc -v 2>&1 | grep -q Open64; then
3305         _type=open64
3306         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3307         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3308         _cflags_speed='-O2'
3309         _cflags_size='-Os'
3310         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3311     elif $_cc -V 2>&1 | grep -q Portland; then
3312         _type=pgi
3313         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3314         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3315         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3316         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3317         _cflags_noopt="-O1"
3318         _flags_filter=pgi_flags
3319     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3320         _type=armasm
3321         _ident=$($_cc | head -n1)
3322         # 4509: "This form of conditional instruction is deprecated"
3323         _flags="-nologo -ignore 4509"
3324         _flags_filter=armasm_flags
3325     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3326         _type=msvc
3327         _ident=$($_cc 2>&1 | head -n1)
3328         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3329         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3330         _cflags_speed="-O2"
3331         _cflags_size="-O1"
3332         _cflags_noopt="-O1"
3333         if $_cc -nologo- 2>&1 | grep -q Linker; then
3334             _ld_o='-out:$@'
3335         else
3336             _ld_o='-Fe$@'
3337         fi
3338         _cc_o='-Fo$@'
3339         _cc_e='-P -Fi$@'
3340         _flags_filter=msvc_flags
3341         _ld_lib='lib%.a'
3342         _ld_path='-libpath:'
3343         _flags='-nologo'
3344     elif $_cc 2>&1 | grep -q Intel; then
3345         _type=icl
3346         _ident=$($_cc 2>&1 | head -n1)
3347         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3348         # Not only is O3 broken on 13.x+ but it is slower on all previous
3349         # versions (tested) as well.
3350         _cflags_speed="-O2"
3351         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3352         if $_cc 2>&1 | grep -q Linker; then
3353             _ld_o='-out:$@'
3354         else
3355             _ld_o='-Fe$@'
3356         fi
3357         _cc_o='-Fo$@'
3358         _cc_e='-P'
3359         _flags_filter=icl_flags
3360         _ld_lib='lib%.a'
3361         _ld_path='-libpath:'
3362         # -Qdiag-error to make icl error when seeing certain unknown arguments
3363         _flags='-nologo -Qdiag-error:4044,10157'
3364         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3365         # with MSVC which enables it by default.
3366         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3367     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3368         # lld can emulate multiple different linkers; in ms link.exe mode,
3369         # the -? parameter gives the help output which contains an identifyable
3370         # string, while it gives an error in other modes.
3371         _type=lld-link
3372         # The link.exe mode doesn't have a switch for getting the version,
3373         # but we can force it back to gnu mode and get the version from there.
3374         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3375         _ld_o='-out:$@'
3376         _flags_filter=msvc_flags
3377         _ld_lib='lib%.a'
3378         _ld_path='-libpath:'
3379     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3380         _type=cparser
3381         _ident=$($_cc --version | head -n1)
3382         _depflags='-MMD'
3383         _cflags_speed='-O4'
3384         _cflags_size='-O2'
3385         _flags_filter=cparser_flags
3386     fi
3387
3388     eval ${pfx}_type=\$_type
3389     eval ${pfx}_ident=\$_ident
3390 }
3391
3392 set_ccvars(){
3393     eval ${1}_C=\${_cc_c-\${${1}_C}}
3394     eval ${1}_E=\${_cc_e-\${${1}_E}}
3395     eval ${1}_O=\${_cc_o-\${${1}_O}}
3396
3397     if [ -n "$_depflags" ]; then
3398         eval ${1}_DEPFLAGS=\$_depflags
3399     else
3400         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3401         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3402         eval DEP${1}FLAGS=\$_flags
3403     fi
3404 }
3405
3406 probe_cc cc "$cc"
3407 cflags_filter=$_flags_filter
3408 cflags_speed=$_cflags_speed
3409 cflags_size=$_cflags_size
3410 cflags_noopt=$_cflags_noopt
3411 add_cflags $_flags $_cflags
3412 cc_ldflags=$_ldflags
3413 set_ccvars CC
3414
3415 probe_cc hostcc "$host_cc"
3416 host_cflags_filter=$_flags_filter
3417 host_cflags_speed=$_cflags_speed
3418 add_host_cflags  $_flags $_cflags
3419 set_ccvars HOSTCC
3420
3421 test -n "$cc_type" && enable $cc_type ||
3422     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3423
3424 : ${as_default:=$cc}
3425 : ${objcc_default:=$cc}
3426 : ${dep_cc_default:=$cc}
3427 : ${ld_default:=$cc}
3428 : ${host_ld_default:=$host_cc}
3429 set_default ar as objcc dep_cc ld host_ld
3430
3431 probe_cc as "$as"
3432 asflags_filter=$_flags_filter
3433 add_asflags $_flags $_cflags
3434 set_ccvars AS
3435
3436 probe_cc objcc "$objcc"
3437 objcflags_filter=$_flags_filter
3438 add_objcflags $_flags $_cflags
3439 set_ccvars OBJC
3440
3441 probe_cc ld "$ld"
3442 ldflags_filter=$_flags_filter
3443 add_ldflags $_flags $_ldflags
3444 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3445 LD_O=${_ld_o-$LD_O}
3446 LD_LIB=${_ld_lib-$LD_LIB}
3447 LD_PATH=${_ld_path-$LD_PATH}
3448
3449 probe_cc hostld "$host_ld"
3450 host_ldflags_filter=$_flags_filter
3451 add_host_ldflags $_flags $_ldflags
3452 HOSTLD_O=${_ld_o-$HOSTLD_O}
3453
3454 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3455     probe_cc depcc "$dep_cc"
3456     CCDEP=${_DEPCMD:-$DEPCMD}
3457     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3458     DEPCCFLAGS=$_flags
3459 fi
3460
3461 if $ar 2>&1 | grep -q Microsoft; then
3462     arflags="-nologo"
3463     ar_o='-out:$@'
3464 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3465     arflags="rq"
3466     ar_o='$@'
3467 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3468     arflags='-Xany -r -c'
3469     ar_o='$@'
3470 else
3471     arflags="rc"
3472     ar_o='$@'
3473 fi
3474
3475 add_cflags $extra_cflags
3476 add_objcflags $extra_objcflags
3477 add_asflags $extra_cflags
3478
3479 if test -n "$sysroot"; then
3480     case "$cc_type" in
3481         gcc|llvm_gcc|clang)
3482             add_cppflags --sysroot="$sysroot"
3483             add_ldflags --sysroot="$sysroot"
3484         ;;
3485         tms470)
3486             add_cppflags -I"$sysinclude"
3487             add_ldflags  --sysroot="$sysroot"
3488         ;;
3489     esac
3490 fi
3491
3492 if test "$cpu" = host; then
3493     enabled cross_compile &&
3494         die "--cpu=host makes no sense when cross-compiling."
3495
3496     case "$cc_type" in
3497         gcc|llvm_gcc)
3498             check_native(){
3499                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3500                 sed -n "/cc1.*$1=/{
3501                             s/.*$1=\\([^ ]*\\).*/\\1/
3502                             p
3503                             q
3504                         }" $TMPE
3505             }
3506             cpu=$(check_native -march || check_native -mcpu)
3507         ;;
3508     esac
3509
3510     test "${cpu:-host}" = host &&
3511         die "--cpu=host not supported with compiler $cc"
3512 fi
3513
3514 # Deal with common $arch aliases
3515 case "$arch" in
3516     aarch64|arm64)
3517         arch="aarch64"
3518     ;;
3519     arm*)
3520         arch="arm"
3521     ;;
3522     mips*|IP*)
3523         case "$arch" in
3524         *el)
3525             add_cppflags -EL
3526             add_ldflags -EL
3527         ;;
3528         *eb)
3529             add_cppflags -EB
3530             add_ldflags -EB
3531         ;;
3532         esac
3533         arch="mips"
3534     ;;
3535     parisc*|hppa*)
3536         arch="parisc"
3537     ;;
3538     "Power Macintosh"|ppc*|powerpc*)
3539         arch="ppc"
3540     ;;
3541     s390|s390x)
3542         arch="s390"
3543     ;;
3544     sh4|sh)
3545         arch="sh4"
3546     ;;
3547     sun4u|sparc*)
3548         arch="sparc"
3549     ;;
3550     tilegx|tile-gx)
3551         arch="tilegx"
3552     ;;
3553     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3554         arch="x86"
3555     ;;
3556 esac
3557
3558 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3559 enable $arch
3560
3561 # Add processor-specific flags
3562 if enabled aarch64; then
3563
3564     case $cpu in
3565         armv*)
3566             cpuflags="-march=$cpu"
3567         ;;
3568         *)
3569             cpuflags="-mcpu=$cpu"
3570         ;;
3571     esac
3572
3573 elif enabled alpha; then
3574
3575     cpuflags="-mcpu=$cpu"
3576
3577 elif enabled arm; then
3578
3579     check_arm_arch() {
3580         check_cpp_condition stddef.h \
3581             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3582             $cpuflags
3583     }
3584
3585     probe_arm_arch() {
3586         if   check_arm_arch 4;        then echo armv4
3587         elif check_arm_arch 4T;       then echo armv4t
3588         elif check_arm_arch 5;        then echo armv5
3589         elif check_arm_arch 5E;       then echo armv5e
3590         elif check_arm_arch 5T;       then echo armv5t
3591         elif check_arm_arch 5TE;      then echo armv5te
3592         elif check_arm_arch 5TEJ;     then echo armv5te
3593         elif check_arm_arch 6;        then echo armv6
3594         elif check_arm_arch 6J;       then echo armv6j
3595         elif check_arm_arch 6K;       then echo armv6k
3596         elif check_arm_arch 6Z;       then echo armv6z
3597         elif check_arm_arch 6ZK;      then echo armv6zk
3598         elif check_arm_arch 6T2;      then echo armv6t2
3599         elif check_arm_arch 7;        then echo armv7
3600         elif check_arm_arch 7A  7_A;  then echo armv7-a
3601         elif check_arm_arch 7S;       then echo armv7-a
3602         elif check_arm_arch 7R  7_R;  then echo armv7-r
3603         elif check_arm_arch 7M  7_M;  then echo armv7-m
3604         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3605         elif check_arm_arch 8A  8_A;  then echo armv8-a
3606         fi
3607     }
3608
3609     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3610
3611     case $cpu in
3612         armv*)
3613             cpuflags="-march=$cpu"
3614             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3615         ;;
3616         *)
3617             cpuflags="-mcpu=$cpu"
3618             case $cpu in
3619                 cortex-a*)                               subarch=armv7a  ;;
3620                 cortex-r*)                               subarch=armv7r  ;;
3621                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3622                 arm11*)                                  subarch=armv6   ;;
3623                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3624                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3625                 *)                             subarch=$(probe_arm_arch) ;;
3626             esac
3627         ;;
3628     esac
3629
3630     case "$subarch" in
3631         armv5t*)    enable fast_clz                ;;
3632         armv[6-8]*) enable fast_clz fast_unaligned ;;
3633     esac
3634
3635 elif enabled avr32; then
3636
3637     case $cpu in
3638         ap7[02]0[0-2])
3639             subarch="avr32_ap"
3640             cpuflags="-mpart=$cpu"
3641         ;;
3642         ap)
3643             subarch="avr32_ap"
3644             cpuflags="-march=$cpu"
3645         ;;
3646         uc3[ab]*)
3647             subarch="avr32_uc"
3648             cpuflags="-mcpu=$cpu"
3649         ;;
3650         uc)
3651             subarch="avr32_uc"
3652             cpuflags="-march=$cpu"
3653         ;;
3654     esac
3655
3656 elif enabled bfin; then
3657
3658     cpuflags="-mcpu=$cpu"
3659
3660 elif enabled mips; then
3661
3662     cpuflags="-march=$cpu"
3663
3664 elif enabled ppc; then
3665
3666     disable ldbrx
3667
3668     case $(tolower $cpu) in
3669         601|ppc601|powerpc601)
3670             cpuflags="-mcpu=601"
3671             disable altivec
3672         ;;
3673         603*|ppc603*|powerpc603*)
3674             cpuflags="-mcpu=603"
3675             disable altivec
3676         ;;
3677         604*|ppc604*|powerpc604*)
3678             cpuflags="-mcpu=604"
3679             disable altivec
3680         ;;
3681         g3|75*|ppc75*|powerpc75*)
3682             cpuflags="-mcpu=750"
3683             disable altivec
3684         ;;
3685         g4|745*|ppc745*|powerpc745*)
3686             cpuflags="-mcpu=7450"
3687             disable vsx
3688         ;;
3689         74*|ppc74*|powerpc74*)
3690             cpuflags="-mcpu=7400"
3691             disable vsx
3692         ;;
3693         g5|970|ppc970|powerpc970)
3694             cpuflags="-mcpu=970"
3695             disable vsx
3696         ;;
3697         power[3-6]*)
3698             cpuflags="-mcpu=$cpu"
3699             disable vsx
3700         ;;
3701         power[7-8]*)
3702             cpuflags="-mcpu=$cpu"
3703             enable ldbrx
3704         ;;
3705         cell)
3706             cpuflags="-mcpu=cell"
3707             enable ldbrx
3708             disable vsx
3709         ;;
3710         e500mc)
3711             cpuflags="-mcpu=e500mc"
3712             disable altivec
3713         ;;
3714         e500v2)
3715             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3716             disable altivec
3717             disable dcbzl
3718         ;;
3719         e500)
3720             cpuflags="-mcpu=8540 -mhard-float"
3721             disable altivec
3722             disable dcbzl
3723         ;;
3724     esac
3725
3726 elif enabled sparc; then
3727
3728     case $cpu in
3729         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3730             cpuflags="-mcpu=$cpu"
3731         ;;
3732         ultrasparc*|niagara[234])
3733             cpuflags="-mcpu=$cpu"
3734         ;;
3735     esac
3736
3737 elif enabled x86; then
3738
3739     case $cpu in
3740         i[345]86|pentium)
3741             cpuflags="-march=$cpu"
3742             disable i686
3743             disable mmx
3744         ;;
3745         # targets that do NOT support nopl and conditional mov (cmov)
3746         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3747             cpuflags="-march=$cpu"
3748             disable i686
3749         ;;
3750         # targets that do support nopl and conditional mov (cmov)
3751         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3752             cpuflags="-march=$cpu"
3753             enable i686
3754             enable fast_cmov
3755         ;;
3756         # targets that do support conditional mov but on which it's slow
3757         pentium4|pentium4m|prescott|nocona)
3758             cpuflags="-march=$cpu"
3759             enable i686
3760             disable fast_cmov
3761         ;;
3762     esac
3763
3764 fi
3765
3766 if [ "$cpu" != generic ]; then
3767     add_cflags  $cpuflags
3768     add_asflags $cpuflags
3769     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3770 fi
3771
3772 # compiler sanity check
3773 check_exec <<EOF
3774 int main(void){ return 0; }
3775 EOF
3776 if test "$?" != 0; then
3777     echo "$cc is unable to create an executable file."
3778     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3779         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3780         echo "Only do this if you know what cross compiling means."
3781     fi
3782     die "C compiler test failed."
3783 fi
3784
3785 add_cppflags -D_ISOC99_SOURCE
3786
3787 # some compilers silently accept -std=c11, so we also need to check that the
3788 # version macro is defined properly
3789 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3790     add_cflags -std=c11 ||
3791     check_cflags -std=c99
3792
3793 check_cppflags -D_FILE_OFFSET_BITS=64
3794 check_cppflags -D_LARGEFILE_SOURCE
3795
3796 add_host_cppflags -D_ISOC99_SOURCE
3797 check_host_cflags -std=c99
3798 check_host_cflags -Wall
3799 check_host_cflags $host_cflags_speed
3800
3801 check_64bit(){
3802     arch32=$1
3803     arch64=$2
3804     expr=$3
3805     check_code cc "" "int test[2*($expr) - 1]" &&
3806         subarch=$arch64 || subarch=$arch32
3807 }
3808
3809 case "$arch" in
3810     aarch64|alpha|ia64)
3811         spic=$shared
3812     ;;
3813     mips)
3814         check_64bit mips mips64 '_MIPS_SIM > 1'
3815         spic=$shared
3816     ;;
3817     parisc)
3818         check_64bit parisc parisc64 'sizeof(void *) > 4'
3819         spic=$shared
3820     ;;
3821     ppc)
3822         check_64bit ppc ppc64 'sizeof(void *) > 4'
3823         spic=$shared
3824     ;;
3825     s390)
3826         check_64bit s390 s390x 'sizeof(void *) > 4'
3827         spic=$shared
3828     ;;
3829     sparc)
3830         check_64bit sparc sparc64 'sizeof(void *) > 4'
3831         spic=$shared
3832     ;;
3833     x86)
3834         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3835         if test "$subarch" = "x86_64"; then
3836             spic=$shared
3837         fi
3838     ;;
3839 esac
3840
3841 enable $subarch
3842 enabled spic && enable_weak pic
3843
3844 # OS specific
3845 case $target_os in
3846     aix)
3847         SHFLAGS=-shared
3848         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3849         enabled shared && add_ldflags -Wl,-brtl
3850         ;;
3851     android)
3852         disable symver
3853         enable section_data_rel_ro
3854         SLIB_INSTALL_NAME='$(SLIBNAME)'
3855         SLIB_INSTALL_LINKS=
3856         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3857         ;;
3858     haiku)
3859         prefix_default="/boot/common"
3860         network_extralibs="-lnetwork"
3861         host_extralibs=
3862         ;;
3863     sunos)
3864         SHFLAGS='-shared -Wl,-h,$$(@F)'
3865         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3866         network_extralibs="-lsocket -lnsl"
3867         # When using suncc to build, the Solaris linker will mark
3868         # an executable with each instruction set encountered by
3869         # the Solaris assembler.  As our libraries contain their own
3870         # guards for processor-specific code, instead suppress
3871         # generation of the HWCAPS ELF section on Solaris x86 only.
3872         enabled_all suncc x86 &&
3873             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3874             add_ldflags -Wl,-M,mapfile
3875         nm_default='nm -P -g'
3876         version_script='-M'
3877         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3878         ;;
3879     netbsd)
3880         disable symver
3881         oss_indev_extralibs="-lossaudio"
3882         oss_outdev_extralibs="-lossaudio"
3883         ;;
3884     openbsd|bitrig)
3885         disable symver
3886         SHFLAGS='-shared'
3887         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3888         SLIB_INSTALL_LINKS=
3889         oss_indev_extralibs="-lossaudio"
3890         oss_outdev_extralibs="-lossaudio"
3891         ;;
3892     dragonfly)
3893         disable symver
3894         ;;
3895     freebsd)
3896         ;;
3897     bsd/os)
3898         add_extralibs -lpoll -lgnugetopt
3899         ;;
3900     darwin)
3901         enabled ppc && add_asflags -force_cpusubtype_ALL
3902         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3903         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3904         add_ldflags -Wl,-dynamic,-search_paths_first
3905         SLIBSUF=".dylib"
3906         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3907         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3908         objformat="macho"
3909         enabled x86_64 && objformat="macho64"
3910         enabled_any pic shared ||
3911             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3912         check_header dispatch/dispatch.h &&
3913             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3914         ;;
3915     msys*)
3916         die "Native MSYS builds are discouraged, please use the MINGW environment."
3917         ;;
3918     mingw32*|mingw64*)
3919         if test $target_os = "mingw32ce"; then
3920             disable network
3921         else
3922             target_os=mingw32
3923         fi
3924         LIBTARGET=i386
3925         if enabled x86_64; then
3926             LIBTARGET="i386:x86-64"
3927         elif enabled arm; then
3928             LIBTARGET=arm-wince
3929         fi
3930         check_ldflags -Wl,--nxcompat
3931         check_ldflags -Wl,--dynamicbase
3932         shlibdir_default="$bindir_default"
3933         SLIBPREF=""
3934         SLIBSUF=".dll"
3935         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3936         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3937         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3938         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3939         SLIB_INSTALL_LINKS=
3940         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3941         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3942         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3943         objformat="win32"
3944         dlltool="${cross_prefix}dlltool"
3945         ranlib=:
3946         enable dos_paths
3947         ;;
3948     win32|win64)
3949         disable symver
3950         if enabled shared; then
3951             # Link to the import library instead of the normal static library
3952             # for shared libs.
3953             LD_LIB='%.lib'
3954             # Cannot build both shared and static libs with MSVC or icl.
3955             disable static
3956         fi
3957         shlibdir_default="$bindir_default"
3958         SLIBPREF=""
3959         SLIBSUF=".dll"
3960         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3961         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3962         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3963         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3964         SLIB_INSTALL_LINKS=
3965         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3966         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3967         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3968         objformat="win32"
3969         ranlib=:
3970         enable dos_paths
3971         ;;
3972     cygwin*)
3973         target_os=cygwin
3974         shlibdir_default="$bindir_default"
3975         SLIBPREF="cyg"
3976         SLIBSUF=".dll"
3977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3979         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3980         SLIB_INSTALL_LINKS=
3981         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3982         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3983         objformat="win32"
3984         enable dos_paths
3985         ;;
3986     *-dos|freedos|opendos)
3987         network_extralibs="-lsocket"
3988         objformat="coff"
3989         enable dos_paths
3990         add_cppflags -U__STRICT_ANSI__
3991         ;;
3992     linux)
3993         enable dv1394
3994         enable section_data_rel_ro
3995         ;;
3996     irix*)
3997         target_os=irix
3998         ranlib="echo ignoring ranlib"
3999         ;;
4000     os/2*)
4001         ln_s="cp -f"
4002         objformat="aout"
4003         add_cppflags -D_GNU_SOURCE
4004         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4005         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4006         LIBSUF="_s.a"
4007         SLIBPREF=""
4008         SLIBSUF=".dll"
4009         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4010         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4011         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4012             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4013             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4014             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4015             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4016         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4017             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4018         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4019         enable dos_paths
4020         ;;
4021     gnu/kfreebsd)
4022         add_cppflags -D_BSD_SOURCE
4023         ;;
4024     gnu)
4025         ;;
4026     qnx)
4027         add_cppflags -D_QNX_SOURCE
4028         network_extralibs="-lsocket"
4029         ;;
4030     symbian)
4031         SLIBSUF=".dll"
4032         enable dos_paths
4033         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4034         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4035         add_ldflags -Wl,--target1-abs,--no-undefined \
4036                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4037                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4038         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4039                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4040                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4041         ;;
4042     osf1)
4043         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4044         ;;
4045     minix)
4046         ;;
4047     none)
4048         ;;
4049     *)
4050         die "Unknown OS '$target_os'."
4051         ;;
4052 esac
4053
4054 # determine libc flavour
4055
4056 probe_libc(){
4057     pfx=$1
4058     pfx_no_=${pfx%_}
4059     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4060     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4061         eval ${pfx}libc_type=uclibc
4062         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4063     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4064         eval ${pfx}libc_type=glibc
4065         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4066     # MinGW headers can be installed on Cygwin, so check for newlib first.
4067     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4068         eval ${pfx}libc_type=newlib
4069         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4070     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4071     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4072         eval ${pfx}libc_type=mingw64
4073         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4074         eval test \$${pfx_no_}cc_type = "gcc" &&
4075             add_${pfx}cppflags -D__printf__=__gnu_printf__
4076     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4077          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4078         eval ${pfx}libc_type=mingw32
4079         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4080             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4081             die "ERROR: MinGW32 runtime version must be >= 3.15."
4082         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4083         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4084             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4085         eval test \$${pfx_no_}cc_type = "gcc" &&
4086             add_${pfx}cppflags -D__printf__=__gnu_printf__
4087     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4088         eval ${pfx}libc_type=msvcrt
4089         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4090             if [ "$pfx" = host_ ]; then
4091                 add_host_cppflags -Dsnprintf=_snprintf
4092             else
4093                 add_compat strtod.o strtod=avpriv_strtod
4094                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4095                                              _snprintf=avpriv_snprintf  \
4096                                              vsnprintf=avpriv_vsnprintf
4097             fi
4098         fi
4099         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4100         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4101         # 0x601 by default unless something else is set by the user.
4102         # This can easily lead to us detecting functions only present
4103         # in such new versions and producing binaries requiring windows 7.0.
4104         # Therefore explicitly set the default to XP unless the user has
4105         # set something else on the command line.
4106         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4107         # family. For these cases, configure is free to use any functions
4108         # found in the SDK headers by default. (Alternatively, we could force
4109         # _WIN32_WINNT to 0x0602 in that case.)
4110         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4111             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4112 #ifdef WINAPI_FAMILY
4113 #include <winapifamily.h>
4114 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4115 #error not desktop
4116 #endif
4117 #endif
4118 EOF
4119         if [ "$pfx" = "" ]; then
4120             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4121         fi
4122     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4123         eval ${pfx}libc_type=klibc
4124     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4125         eval ${pfx}libc_type=bionic
4126     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4127         eval ${pfx}libc_type=solaris
4128         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4129     else
4130         eval ${pfx}libc_type=default
4131         add_${pfx}cppflags -D_DEFAULT_SOURCE
4132     fi
4133 }
4134
4135 probe_libc
4136 test -n "$libc_type" && enable libc_$libc_type
4137 probe_libc host_
4138 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4139
4140 # hacks for compiler/libc/os combinations
4141
4142 case $libc_type in
4143     bionic)
4144         add_compat strtod.o strtod=avpriv_strtod
4145         ;;
4146     glibc)
4147         if enabled tms470; then
4148             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4149             add_cppflags -D__USER_LABEL_PREFIX__=
4150             add_cppflags -D__builtin_memset=memset
4151             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4152             add_cflags   -pds=48    # incompatible redefinition of macro
4153         elif enabled ccc; then
4154             add_ldflags -Wl,-z,now  # calls to libots crash without this
4155         fi
4156         ;;
4157 esac
4158
4159 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4160     add_cppflags '-I\$(SRC_PATH)/compat/float'
4161
4162 esc(){
4163     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4164 }
4165
4166 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4167
4168 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4169
4170 set_default $PATHS_LIST
4171 set_default nm
4172
4173 # we need to build at least one lib type
4174 if ! enabled_any static shared; then
4175     cat <<EOF
4176 At least one library type must be built.
4177 Specify --enable-static to build the static libraries or --enable-shared to
4178 build the shared libraries as well. To only build the shared libraries specify
4179 --disable-static in addition to --enable-shared.
4180 EOF
4181     exit 1
4182 fi
4183
4184 disabled optimizations || check_cflags -fomit-frame-pointer
4185
4186 enable_weak_pic() {
4187     disabled pic && return
4188     enable pic
4189     add_cppflags -DPIC
4190     case "$target_os" in
4191     mingw*|cygwin*)
4192         ;;
4193     *)
4194         add_cflags -fPIC
4195         ;;
4196     esac
4197     add_asflags  -fPIC
4198 }
4199
4200 enabled pic && enable_weak_pic
4201
4202 check_cc <<EOF || die "Symbol mangling check failed."
4203 int ff_extern;
4204 EOF
4205 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4206 extern_prefix=${sym%%ff_extern*}
4207
4208 check_inline_asm inline_asm '"" ::'
4209
4210 _restrict=
4211 for restrict_keyword in restrict __restrict__ __restrict; do
4212     check_cc <<EOF && _restrict=$restrict_keyword && break
4213 void foo(char * $restrict_keyword p);
4214 EOF
4215 done
4216
4217 check_cc <<EOF && enable pragma_deprecated
4218 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4219 EOF
4220
4221 check_cc <<EOF && enable attribute_packed
4222 struct { int x; } __attribute__((packed)) x;
4223 EOF
4224
4225 check_cc <<EOF && enable attribute_may_alias
4226 union { int x; } __attribute__((may_alias)) x;
4227 EOF
4228
4229 check_cc <<EOF || die "endian test failed"
4230 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4231 EOF
4232 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4233
4234 check_gas() {
4235     log "check_gas using '$as' as AS"
4236     # :vararg is used on aarch64, arm and ppc altivec
4237     check_as <<EOF || return 1
4238 .macro m n, y:vararg=0
4239 \n: .int \y
4240 .endm
4241 m x
4242 EOF
4243     # .altmacro is only used in arm asm
4244     ! enabled arm || check_as <<EOF || return 1
4245 .altmacro
4246 EOF
4247     enable gnu_as
4248     return 0
4249 }
4250
4251 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4252     nogas=:
4253     enabled_any arm aarch64 && nogas=die
4254     enabled_all ppc altivec && nogas=warn
4255     as_noop=-v
4256
4257     case $as_type in
4258         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4259         gcc)  gaspp_as_type=gas ;;
4260         *)    gaspp_as_type=$as_type ;;
4261     esac
4262
4263     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4264
4265     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4266         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4267
4268     if ! check_gas ; then
4269         as=${gas:=$as}
4270         check_gas || \
4271             $nogas "GNU assembler not found, install/update gas-preprocessor"
4272     fi
4273
4274     check_as <<EOF && enable as_func
4275 .func test
4276 .endfunc
4277 EOF
4278 fi
4279
4280 check_inline_asm inline_asm_labels '"1:\n"'
4281
4282 if enabled aarch64; then
4283     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4284     # internal assembler in clang 3.3 does not support this instruction
4285     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4286     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4287
4288     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4289
4290 elif enabled alpha; then
4291
4292     check_cflags -mieee
4293
4294 elif enabled arm; then
4295
4296     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4297     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4298     enabled thumb && check_cflags -mthumb || check_cflags -marm
4299
4300     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4301         enable vfp_args
4302     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4303         enable vfp_args
4304     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4305         case "${cross_prefix:-$cc}" in
4306             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4307             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4308 __asm__ (".eabi_attribute 28, 1");
4309 int main(void) { return 0; }
4310 EOF
4311         esac
4312         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4313     fi
4314
4315     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4316     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4317     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4318     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4319     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4320     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4321
4322     [ $target_os = linux ] || [ $target_os = android ] ||
4323         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4324             $ARCH_EXT_LIST_ARM
4325
4326     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4327
4328     check_as <<EOF && enable as_dn_directive
4329 ra .dn d0.i16
4330 .unreq ra
4331 EOF
4332     check_as <<EOF && enable as_fpu_directive
4333 .fpu neon
4334 EOF
4335
4336     # llvm's integrated assembler supports .object_arch from llvm 3.5
4337     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4338 .object_arch armv4
4339 EOF
4340
4341     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4342
4343 elif enabled mips; then
4344
4345     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4346
4347     # make sure that only an instruction set is enabled
4348     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4349
4350     if enabled mips64; then
4351         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4352             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4353                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4354     else
4355         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4356             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4357                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4358     fi
4359
4360 elif enabled parisc; then
4361
4362     if enabled gcc; then
4363         case $($cc -dumpversion) in
4364             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4365         esac
4366     fi
4367
4368 elif enabled ppc; then
4369
4370     enable local_aligned_8 local_aligned_16 local_aligned_32
4371
4372     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4373     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4374     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4375     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4376
4377     # AltiVec flags: The FSF version of GCC differs from the Apple version
4378     if enabled altivec; then
4379         check_cflags -maltivec -mabi=altivec &&
4380         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4381         check_cflags -faltivec
4382
4383         # check if our compiler supports Motorola AltiVec C API
4384         check_cc <<EOF || disable altivec
4385 $inc_altivec_h
4386 int main(void) {
4387     vector signed int v1 = (vector signed int) { 0 };
4388     vector signed int v2 = (vector signed int) { 1 };
4389     v1 = vec_add(v1, v2);
4390     return 0;
4391 }
4392 EOF
4393
4394         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4395     fi
4396
4397     if enabled vsx; then
4398         check_cflags -mvsx &&
4399         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4400     fi
4401
4402     if enabled power8; then
4403         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4404     fi
4405
4406 elif enabled x86; then
4407
4408     check_builtin rdtsc    intrin.h   "__rdtsc()"
4409     check_builtin mm_empty mmintrin.h "_mm_empty()"
4410
4411     enable local_aligned_8 local_aligned_16 local_aligned_32
4412
4413     # check whether EBP is available on x86
4414     # As 'i' is stored on the stack, this program will crash
4415     # if the base pointer is used to access it because the
4416     # base pointer is cleared in the inline assembly code.
4417     check_exec_crash <<EOF && enable ebp_available
4418 volatile int i=0;
4419 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4420 return i;
4421 EOF
4422
4423     # check whether EBX is available on x86
4424     check_inline_asm ebx_available '""::"b"(0)' &&
4425         check_inline_asm ebx_available '"":::"%ebx"'
4426
4427     # check whether xmm clobbers are supported
4428     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4429
4430     # check whether binutils is new enough to compile SSSE3/MMXEXT
4431     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4432     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4433
4434     if ! disabled_any asm mmx yasm; then
4435         if check_cmd $yasmexe --version; then
4436             enabled x86_64 && yasm_extra="-m amd64"
4437             yasm_debug="-g dwarf2"
4438         elif check_cmd nasm -v; then
4439             yasmexe=nasm
4440             yasm_debug="-g -F dwarf"
4441             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4442         fi
4443
4444         YASMFLAGS="-f $objformat $yasm_extra"
4445         enabled pic               && append YASMFLAGS "-DPIC"
4446         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4447         case "$objformat" in
4448             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4449         esac
4450
4451         check_yasm "movbe ecx, [5]" && enable yasm ||
4452             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4453         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4454         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4455         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4456         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4457         check_yasm "CPU amdnop" || disable cpunop
4458     fi
4459
4460     case "$cpu" in
4461         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4462             disable fast_clz
4463         ;;
4464     esac
4465
4466 fi
4467
4468 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4469
4470 check_ldflags -Wl,--as-needed
4471
4472 if check_func dlopen; then
4473     ldl=
4474 elif check_func dlopen -ldl; then
4475     ldl=-ldl
4476 fi
4477
4478 if ! disabled network; then
4479     check_func getaddrinfo $network_extralibs
4480     check_func inet_aton $network_extralibs
4481
4482     check_type netdb.h "struct addrinfo"
4483     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4484     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4485     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4486     check_type poll.h "struct pollfd"
4487     check_type netinet/sctp.h "struct sctp_event_subscribe"
4488     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4489     check_type netinet/in.h "struct sockaddr_in6"
4490     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4491     check_type "sys/types.h sys/socket.h" socklen_t
4492
4493     # Prefer arpa/inet.h over winsock2
4494     if check_header arpa/inet.h ; then
4495         check_func closesocket
4496     elif check_header winsock2.h ; then
4497         check_func_headers winsock2.h closesocket -lws2 &&
4498             network_extralibs="-lws2" ||
4499         { check_func_headers winsock2.h closesocket -lws2_32 &&
4500             network_extralibs="-lws2_32"; } || disable winsock2_h network
4501         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4502
4503         check_type ws2tcpip.h socklen_t
4504         check_type ws2tcpip.h "struct addrinfo"
4505         check_type ws2tcpip.h "struct group_source_req"
4506         check_type ws2tcpip.h "struct ip_mreq_source"
4507         check_type ws2tcpip.h "struct ipv6_mreq"
4508         check_type winsock2.h "struct pollfd"
4509         check_struct winsock2.h "struct sockaddr" sa_len
4510         check_type ws2tcpip.h "struct sockaddr_in6"
4511         check_type ws2tcpip.h "struct sockaddr_storage"
4512     else
4513         disable network
4514     fi
4515 fi
4516
4517 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4518 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4519 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4520 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4521
4522 case "$custom_allocator" in
4523     jemalloc)
4524         # jemalloc by default does not use a prefix
4525         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4526     ;;
4527     tcmalloc)
4528         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4529         malloc_prefix=tc_
4530     ;;
4531 esac
4532
4533 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4534 check_func  ${malloc_prefix}memalign            && enable memalign
4535 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4536
4537 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4538     check_func_headers time.h clock_gettime ||
4539         { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
4540
4541 check_func  fcntl
4542 check_func  fork
4543 check_func  gethrtime
4544 check_func  getopt
4545 check_func  getrusage
4546 check_func  gettimeofday
4547 check_func  gmtime_r
4548 check_func  isatty
4549 check_func  localtime_r
4550 check_func  mach_absolute_time
4551 check_func  mkstemp
4552 check_func  mmap
4553 check_func  mprotect
4554 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4555 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4556 check_func  sched_getaffinity
4557 check_func  setrlimit
4558 check_func  strerror_r
4559 check_func  sysconf
4560 check_func  sysctl
4561 check_func  usleep
4562
4563 check_func_headers io.h setmode
4564 check_func_headers stdlib.h getenv
4565
4566 check_func_headers windows.h GetProcessAffinityMask
4567 check_func_headers windows.h GetProcessTimes
4568 check_func_headers windows.h GetSystemTimeAsFileTime
4569 check_func_headers windows.h LoadLibrary
4570 check_func_headers windows.h MapViewOfFile
4571 check_func_headers windows.h SetConsoleTextAttribute
4572 check_func_headers windows.h Sleep
4573 check_func_headers windows.h VirtualAlloc
4574 check_struct windows.h "CONDITION_VARIABLE" Ptr
4575
4576 check_header d3d11.h
4577 check_header direct.h
4578 check_header dlfcn.h
4579 check_header dxva.h
4580 check_header dxva2api.h
4581 check_header io.h
4582 check_header mach/mach_time.h
4583 check_header malloc.h
4584 check_header poll.h
4585 check_header sys/mman.h
4586 check_header sys/param.h
4587 check_header sys/resource.h
4588 check_header sys/select.h
4589 check_header sys/time.h
4590 check_header sys/un.h
4591 check_header unistd.h
4592 check_header valgrind/valgrind.h
4593 check_header VideoDecodeAcceleration/VDADecoder.h
4594 check_header windows.h
4595 check_header X11/extensions/XvMClib.h
4596
4597 # it seems there are versions of clang in some distros that try to use the
4598 # gcc headers, which explodes for stdatomic
4599 # so we also check that atomics actually work here
4600 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4601
4602 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4603 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4604 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4605
4606 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4607
4608 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4609 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4610 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4611
4612 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4613 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4614 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4615 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4616 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4617 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4618 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4619 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4620
4621 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4622
4623 if ! disabled w32threads && ! enabled pthreads; then
4624     check_lib w32threads "windows.h process.h" _beginthreadex
4625 fi
4626
4627 # check for some common methods of building with pthread support
4628 # do this before the optional library checks as some of them require pthreads
4629 if ! disabled pthreads && ! enabled w32threads; then
4630     if check_lib pthreads pthread.h pthread_join -pthread; then
4631         add_cflags -pthread
4632     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4633         add_cflags -pthreads
4634     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4635         :
4636     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4637         :
4638     elif check_func pthread_join; then
4639         enable pthreads
4640     fi
4641 fi
4642
4643 enabled pthreads &&
4644     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4645
4646 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4647 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4648
4649 check_lib libm math.h sin -lm && LIBM="-lm"
4650
4651 atan2f_args=2
4652 ldexpf_args=2
4653 powf_args=2
4654
4655 for func in $MATH_FUNCS; do
4656     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4657 done
4658
4659 # these are off by default, so fail if requested and not available
4660 enabled avisynth          && require_header avisynth/avisynth_c.h
4661 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4662 enabled cuda              && require cuda cuda.h cuInit -lcuda
4663 enabled frei0r            && require_header frei0r.h
4664 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4665 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4666 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4667 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4668 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4669 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4670 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4671 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4672 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4673                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4674                                done || die "ERROR: libgsm not found"; }
4675 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4676 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4677 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4678 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4679 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4680 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4681 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4682 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4683 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4684 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4685 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4686                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4687 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4688 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4689 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4690 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4691 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4692 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4693 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4694 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4695 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4696 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4697 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4698 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4699                              { enabled libvpx_vp8_decoder &&
4700                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4701                                enabled libvpx_vp8_encoder &&
4702                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4703                                enabled libvpx_vp9_decoder &&
4704                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4705                                enabled libvpx_vp9_encoder &&
4706                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4707                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4708                                    die "libvpx enabled but no supported decoders/encoders found"
4709                              }
4710 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4711 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4712 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4713                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4714                              { check_cpp_condition x264.h "X264_MPEG2" &&
4715                                enable libx262; }
4716 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4717                              require_cpp_condition x265.h "X265_BUILD >= 57"
4718 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4719 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4720 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4721                                { ! enabled cross_compile &&
4722                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4723                                  add_ldflags -L/opt/vc/lib/ &&
4724                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4725                                die "ERROR: mmal not found" &&
4726                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4727 enabled omx_rpi           && { check_header OMX_Core.h ||
4728                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4729                                die "ERROR: OpenMAX IL headers not found"; }
4730 enabled omx               && require_header OMX_Core.h
4731 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4732                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4733                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4734                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4735                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4736                                die "ERROR: openssl not found"; }
4737
4738 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4739
4740 if enabled nvenc; then
4741     require_header nvEncodeAPI.h
4742     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4743 fi
4744
4745 check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4746
4747 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4748 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4749
4750 check_header linux/fb.h
4751 check_header linux/videodev2.h
4752 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4753
4754 check_header AVFoundation/AVFoundation.h
4755
4756 check_header sys/videoio.h
4757
4758 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4759 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4760 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4761 # w32api 3.12 had it defined wrong
4762 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4763
4764 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4765 { check_header dev/bktr/ioctl_meteor.h &&
4766   check_header dev/bktr/ioctl_bt848.h; } ||
4767 { check_header machine/ioctl_meteor.h &&
4768   check_header machine/ioctl_bt848.h; } ||
4769 { check_header dev/video/meteor/ioctl_meteor.h &&
4770   check_header dev/video/bktr/ioctl_bt848.h; } ||
4771 check_header dev/ic/bt8xx.h
4772
4773 check_header sys/soundcard.h
4774 check_header soundcard.h
4775
4776 enabled_any alsa_indev alsa_outdev &&
4777     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4778
4779 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
4780     check_func jack_port_get_latency_range -ljack
4781
4782 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4783
4784 if enabled libcdio; then
4785     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4786     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4787     die "ERROR: No usable libcdio/cdparanoia found"
4788 fi
4789
4790 if enabled libxcb; then
4791     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4792     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4793     disabled libxcb_shm ||
4794         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4795     disabled libxcb_xfixes ||
4796         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4797 fi
4798
4799 enabled dxva2 &&
4800     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
4801
4802 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4803
4804 enabled vaapi &&
4805     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4806     disable vaapi
4807
4808 enabled vaapi &&
4809     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4810
4811 enabled vaapi &&
4812     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4813
4814 enabled vdpau &&
4815     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4816     disable vdpau
4817
4818 enabled vdpau &&
4819     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4820
4821 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4822
4823 # add some useful compiler flags if supported
4824 check_cflags -Wdeclaration-after-statement
4825 check_cflags -Wall
4826 check_cflags -Wdisabled-optimization
4827 check_cflags -Wpointer-arith
4828 check_cflags -Wredundant-decls
4829 check_cflags -Wwrite-strings
4830 check_cflags -Wtype-limits
4831 check_cflags -Wundef
4832 check_cflags -Wmissing-prototypes
4833 check_cflags -Wstrict-prototypes
4834
4835 if enabled extra_warnings; then
4836     check_cflags -Wcast-qual
4837     check_cflags -Wextra
4838     check_cflags -Wpedantic
4839 fi