build: Special-case handling of SDL CFLAGS
[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-x86asm         disable use of standalone x86 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 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         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             for dep in $dep_all $dep_any $dep_sgs; do
643                 # filter out library deps, these do not belong in extralibs
644                 is_in $dep $LIBRARY_LIST && continue
645                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
646             done
647         fi
648
649         disable ${cfg}_checking
650     done
651 }
652
653 print_config(){
654     pfx=$1
655     files=$2
656     shift 2
657     map 'eval echo "$v \${$v:-no}"' "$@" |
658     awk "BEGIN { split(\"$files\", files) }
659         {
660             c = \"$pfx\" toupper(\$1);
661             v = \$2;
662             sub(/yes/, 1, v);
663             sub(/no/,  0, v);
664             for (f in files) {
665                 file = files[f];
666                 if (file ~ /\\.h\$/) {
667                     printf(\"#define %s %d\\n\", c, v) >>file;
668                 } else if (file ~ /\\.asm\$/) {
669                     printf(\"%%define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.mak\$/) {
671                     n = -v ? \"\" : \"!\";
672                     printf(\"%s%s=yes\\n\", n, c) >>file;
673                 }
674             }
675         }"
676 }
677
678 print_enabled(){
679     suf=$1
680     shift
681     for v; do
682         enabled $v && printf "%s\n" ${v%$suf}
683     done
684 }
685
686 append(){
687     var=$1
688     shift
689     eval "$var=\"\$$var $*\""
690 }
691
692 prepend(){
693     var=$1
694     shift
695     eval "$var=\"$* \$$var\""
696 }
697
698 unique(){
699     var=$1
700     uniq_list=""
701     for tok in $(eval echo \$$var); do
702         uniq_list="$(filter_out $tok $uniq_list) $tok"
703     done
704     eval "$var=\"${uniq_list}\""
705 }
706
707 resolve(){
708     var=$1
709     tmpvar=
710     for entry in $(eval echo \$$var); do
711         tmpvar="$tmpvar $(eval echo \$${entry})"
712     done
713     eval "$var=\"${tmpvar}\""
714 }
715
716 add_cppflags(){
717     append CPPFLAGS "$@"
718 }
719
720 add_cflags(){
721     append CFLAGS $($cflags_filter "$@")
722 }
723
724 add_cflags_headers(){
725     append CFLAGS_HEADERS $($cflags_filter "$@")
726 }
727
728 add_asflags(){
729     append ASFLAGS $($asflags_filter "$@")
730 }
731
732 add_objcflags(){
733     append OBJCFLAGS $($objcflags_filter "$@")
734 }
735
736 add_ldflags(){
737     append LDFLAGS $($ldflags_filter "$@")
738 }
739
740 add_ldexeflags(){
741     append LDEXEFLAGS $($ldflags_filter "$@")
742 }
743
744 add_stripflags(){
745     append STRIPFLAGS "$@"
746 }
747
748 add_extralibs(){
749     prepend extralibs $($ldflags_filter "$@")
750 }
751
752 add_host_cppflags(){
753     append host_cppflags "$@"
754 }
755
756 add_host_cflags(){
757     append host_cflags $($host_cflags_filter "$@")
758 }
759
760 add_host_ldflags(){
761     append host_ldflags $($host_ldflags_filter "$@")
762 }
763
764 add_compat(){
765     append compat_objs $1
766     shift
767     map 'add_cppflags -D$v' "$@"
768 }
769
770 check_cmd(){
771     log "$@"
772     "$@" >> $logfile 2>&1
773 }
774
775 cc_o(){
776     eval printf '%s\\n' $CC_O
777 }
778
779 cc_e(){
780     eval printf '%s\\n' $CC_E
781 }
782
783 check_cc(){
784     log check_cc "$@"
785     cat > $TMPC
786     log_file $TMPC
787     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
788 }
789
790 check_objcc(){
791     log check_objcc "$@"
792     cat > $TMPC
793     log_file $TMPC
794     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
795 }
796
797 check_cpp(){
798     log check_cpp "$@"
799     cat > $TMPC
800     log_file $TMPC
801     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
802 }
803
804 as_o(){
805     eval printf '%s\\n' $AS_O
806 }
807
808 check_as(){
809     log check_as "$@"
810     cat > $TMPS
811     log_file $TMPS
812     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
813 }
814
815 check_inline_asm(){
816     log check_inline_asm "$@"
817     name="$1"
818     code="$2"
819     shift 2
820     disable $name
821     check_cc "$@" <<EOF && enable $name
822 void foo(void){ __asm__ volatile($code); }
823 EOF
824 }
825
826 check_insn(){
827     log check_insn "$@"
828     check_inline_asm ${1}_inline "\"$2\""
829     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
830 }
831
832 check_x86asm(){
833     log check_x86asm "$@"
834     echo "$1" > $TMPS
835     log_file $TMPS
836     shift 1
837     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
838 }
839
840 ld_o(){
841     eval printf '%s\\n' $LD_O
842 }
843
844 check_ld(){
845     log check_ld "$@"
846     flags=$(filter_out '-l*' "$@")
847     libs=$(filter '-l*' "$@")
848     check_cc $($cflags_filter $flags) || return
849     flags=$($ldflags_filter $flags)
850     libs=$($ldflags_filter $libs)
851     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
852 }
853
854 print_include(){
855     hdr=$1
856     test "${hdr%.h}" = "${hdr}" &&
857         echo "#include $hdr"    ||
858         echo "#include <$hdr>"
859 }
860
861 check_code(){
862     log check_code "$@"
863     check=$1
864     headers=$2
865     code=$3
866     shift 3
867     {
868         for hdr in $headers; do
869             print_include $hdr
870         done
871         echo "int main(void) { $code; return 0; }"
872     } | check_$check "$@"
873 }
874
875 check_cppflags(){
876     log check_cppflags "$@"
877     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
878 #include <stdlib.h>;
879 EOF
880 }
881
882 test_cflags(){
883     log test_cflags "$@"
884     set -- $($cflags_filter "$@")
885     check_cc "$@" <<EOF
886 int x;
887 EOF
888 }
889
890 check_cflags(){
891     log check_cflags "$@"
892     test_cflags "$@" && add_cflags "$@"
893 }
894
895 test_objcflags(){
896     log test_objcflags "$@"
897     set -- $($objcflags_filter "$@")
898     check_objcc "$@" <<EOF
899 int x;
900 EOF
901 }
902
903 check_objcflags(){
904     log check_objcflags "$@"
905     test_objcflags "$@" && add_objcflags "$@"
906 }
907
908 test_ldflags(){
909     log test_ldflags "$@"
910     check_ld "$@" <<EOF
911 int main(void){ return 0; }
912 EOF
913 }
914
915 check_ldflags(){
916     log check_ldflags "$@"
917     test_ldflags "$@" && add_ldflags "$@"
918 }
919
920 test_stripflags(){
921     log test_stripflags "$@"
922     # call check_cc to get a fresh TMPO
923     check_cc <<EOF
924 int main(void) { return 0; }
925 EOF
926     check_cmd $strip $STRIPFLAGS "$@" $TMPO
927 }
928
929 check_stripflags(){
930     log check_stripflags "$@"
931     test_stripflags "$@" && add_stripflags "$@"
932 }
933
934 check_header(){
935     log check_header "$@"
936     header=$1
937     shift
938     disable_safe $header
939     check_cpp "$@" <<EOF && enable_safe $header
940 #include <$header>
941 int x;
942 EOF
943 }
944
945 check_func(){
946     log check_func "$@"
947     func=$1
948     shift
949     disable $func
950     check_ld "$@" <<EOF && enable $func
951 extern int $func();
952 int main(void){ $func(); }
953 EOF
954 }
955
956 check_mathfunc(){
957     log check_mathfunc "$@"
958     func=$1
959     narg=$2
960     shift 2
961     test $narg = 2 && args="f, g" || args="f"
962     disable $func
963     check_ld "$@" <<EOF && enable $func
964 #include <math.h>
965 float foo(float f, float g) { return $func($args); }
966 int main(void){ return 0; }
967 EOF
968 }
969
970 check_func_headers(){
971     log check_func_headers "$@"
972     headers=$1
973     funcs=$2
974     shift 2
975     {
976         for hdr in $headers; do
977             print_include $hdr
978         done
979         for func in $funcs; do
980             echo "long check_$func(void) { return (long) $func; }"
981         done
982         echo "int main(void) { return 0; }"
983     } | check_ld "$@" && enable $funcs && enable_safe $headers
984 }
985
986 check_cpp_condition(){
987     log check_cpp_condition "$@"
988     header=$1
989     condition=$2
990     shift 2
991     check_cpp "$@" <<EOF
992 #include <$header>
993 #if !($condition)
994 #error "unsatisfied condition: $condition"
995 #endif
996 EOF
997 }
998
999 test_cflags_cpp(){
1000     log test_cflags_cpp "$@"
1001     flags=$1
1002     condition=$2
1003     shift 2
1004     set -- $($cflags_filter "$flags")
1005     check_cpp "$@" <<EOF
1006 #if !($condition)
1007 #error "unsatisfied condition: $condition"
1008 #endif
1009 EOF
1010 }
1011
1012 check_lib(){
1013     log check_lib "$@"
1014     name="$1"
1015     headers="$2"
1016     funcs="$3"
1017     shift 3
1018     disable $name
1019     check_func_headers "$headers" "$funcs" "$@" &&
1020         enable $name && eval ${name}_extralibs="\$@"
1021 }
1022
1023 check_pkg_config(){
1024     log check_pkg_config "$@"
1025     name="$1"
1026     pkg_version="$2"
1027     pkg="${2%% *}"
1028     headers="$3"
1029     funcs="$4"
1030     shift 4
1031     disable $name
1032     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1033     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1034     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1035     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1036         enable $name &&
1037         add_cflags    "$pkg_cflags" &&
1038         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1039 }
1040
1041 check_exec(){
1042     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1043 }
1044
1045 check_exec_crash(){
1046     log check_exec_crash "$@"
1047     code=$(cat)
1048
1049     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1050     # are safe but may not be available everywhere.  Thus we use
1051     # raise(SIGTERM) instead.  The check is run in a subshell so we
1052     # can redirect the "Terminated" message from the shell.  SIGBUS
1053     # is not defined by standard C so it is used conditionally.
1054
1055     (check_exec "$@") >> $logfile 2>&1 <<EOF
1056 #include <signal.h>
1057 static void sighandler(int sig){
1058     raise(SIGTERM);
1059 }
1060 int foo(void){
1061     $code
1062 }
1063 int (*func_ptr)(void) = foo;
1064 int main(void){
1065     signal(SIGILL, sighandler);
1066     signal(SIGFPE, sighandler);
1067     signal(SIGSEGV, sighandler);
1068 #ifdef SIGBUS
1069     signal(SIGBUS, sighandler);
1070 #endif
1071     return func_ptr();
1072 }
1073 EOF
1074 }
1075
1076 check_type(){
1077     log check_type "$@"
1078     headers=$1
1079     type=$2
1080     shift 2
1081     disable_safe "$type"
1082     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1083 }
1084
1085 check_struct(){
1086     log check_struct "$@"
1087     headers=$1
1088     struct=$2
1089     member=$3
1090     shift 3
1091     disable_safe "${struct}_${member}"
1092     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1093         enable_safe "${struct}_${member}"
1094 }
1095
1096 check_builtin(){
1097     log check_builtin "$@"
1098     name=$1
1099     headers=$2
1100     builtin=$3
1101     shift 3
1102     disable "$name"
1103     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1104 }
1105
1106 check_compile_assert(){
1107     log check_compile_assert "$@"
1108     name=$1
1109     headers=$2
1110     condition=$3
1111     shift 3
1112     disable "$name"
1113     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1114 }
1115
1116 require(){
1117     log require "$@"
1118     name_version="$1"
1119     name="${1%% *}"
1120     headers="$2"
1121     func="$3"
1122     shift 3
1123     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1124 }
1125
1126 require_header(){
1127     log require "$@"
1128     header="$1"
1129     shift
1130     check_header "$header" "$@" || die "ERROR: $header not found"
1131 }
1132
1133 require_cpp_condition(){
1134     log require "$@"
1135     header="$1"
1136     condition="$2"
1137     shift 2
1138     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1139 }
1140
1141 require_pkg_config(){
1142     log require_pkg_config "$@"
1143     pkg_version="$2"
1144     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1145 }
1146
1147 hostcc_e(){
1148     eval printf '%s\\n' $HOSTCC_E
1149 }
1150
1151 hostcc_o(){
1152     eval printf '%s\\n' $HOSTCC_O
1153 }
1154
1155 check_host_cc(){
1156     log check_host_cc "$@"
1157     cat > $TMPC
1158     log_file $TMPC
1159     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1160 }
1161
1162 check_host_cpp(){
1163     log check_host_cpp "$@"
1164     cat > $TMPC
1165     log_file $TMPC
1166     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1167 }
1168
1169 check_host_cppflags(){
1170     log check_host_cppflags "$@"
1171     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1172 #include <stdlib.h>;
1173 EOF
1174 }
1175
1176 check_host_cflags(){
1177     log check_host_cflags "$@"
1178     set -- $($host_cflags_filter "$@")
1179     check_host_cc "$@" <<EOF && append host_cflags "$@"
1180 int x;
1181 EOF
1182 }
1183
1184 check_host_cpp_condition(){
1185     log check_host_cpp_condition "$@"
1186     header=$1
1187     condition=$2
1188     shift 2
1189     check_host_cpp "$@" <<EOF
1190 #include <$header>
1191 #if !($condition)
1192 #error "unsatisfied condition: $condition"
1193 #endif
1194 EOF
1195 }
1196
1197 apply(){
1198     file=$1
1199     shift
1200     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1201 }
1202
1203 cp_if_changed(){
1204     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1205     mkdir -p "$(dirname $2)"
1206     cp -f "$1" "$2"
1207 }
1208
1209 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1210 # system-dependent things.
1211
1212 AVCODEC_COMPONENTS="
1213     bsfs
1214     decoders
1215     encoders
1216     hwaccels
1217     parsers
1218 "
1219
1220 AVDEVICE_COMPONENTS="
1221     indevs
1222     outdevs
1223 "
1224 AVFILTER_COMPONENTS="
1225     filters
1226 "
1227 AVFORMAT_COMPONENTS="
1228     demuxers
1229     muxers
1230     protocols
1231 "
1232
1233 AVRESAMPLE_COMPONENTS=""
1234 AVUTIL_COMPONENTS=""
1235
1236 COMPONENT_LIST="
1237     $AVCODEC_COMPONENTS
1238     $AVDEVICE_COMPONENTS
1239     $AVFILTER_COMPONENTS
1240     $AVFORMAT_COMPONENTS
1241     $AVRESAMPLE_COMPONENTS
1242     $AVUTIL_COMPONENTS
1243 "
1244
1245 EXAMPLE_LIST="
1246     decode_audio_example
1247     decode_video_example
1248     encode_audio_example
1249     encode_video_example
1250     filter_audio_example
1251     metadata_example
1252     output_example
1253     qsvdec_example
1254     transcode_aac_example
1255 "
1256
1257 # catchall list of things that require external libs to link
1258 EXTRALIBS_LIST="
1259     cpu_init
1260     cws2fws
1261 "
1262
1263 HWACCEL_LIBRARY_NONFREE_LIST="
1264     cuda
1265     libnpp
1266 "
1267 HWACCEL_LIBRARY_LIST="
1268     $HWACCEL_LIBRARY_NONFREE_LIST
1269     d3d11va
1270     dxva2
1271     libmfx
1272     mmal
1273     nvenc
1274     omx
1275     vaapi
1276     vda
1277     vdpau
1278 "
1279
1280 EXTERNAL_LIBRARY_GPL_LIST="
1281     libcdio
1282     libx264
1283     libx265
1284     libxavs
1285     libxvid
1286 "
1287
1288 EXTERNAL_LIBRARY_NONFREE_LIST="
1289     libfaac
1290     libfdk_aac
1291     openssl
1292 "
1293
1294 EXTERNAL_LIBRARY_VERSION3_LIST="
1295     libopencore_amrnb
1296     libopencore_amrwb
1297     libvo_aacenc
1298     libvo_amrwbenc
1299 "
1300
1301 EXTERNAL_LIBRARY_LIST="
1302     $EXTERNAL_LIBRARY_GPL_LIST
1303     $EXTERNAL_LIBRARY_NONFREE_LIST
1304     $EXTERNAL_LIBRARY_VERSION3_LIST
1305     avisynth
1306     avxsynth
1307     frei0r
1308     gnutls
1309     libbs2b
1310     libdc1394
1311     libdcadec
1312     libfontconfig
1313     libfreetype
1314     libgsm
1315     libhdcd
1316     libilbc
1317     libkvazaar
1318     libmp3lame
1319     libopencv
1320     libopenh264
1321     libopenjpeg
1322     libopus
1323     libpulse
1324     librtmp
1325     libschroedinger
1326     libsnappy
1327     libspeex
1328     libtheora
1329     libtwolame
1330     libvorbis
1331     libvpx
1332     libwavpack
1333     libwebp
1334     libxcb
1335     libxcb_shm
1336     libxcb_xfixes
1337 "
1338
1339 SYSTEM_LIBRARY_LIST="
1340     bzlib
1341     zlib
1342 "
1343
1344 FEATURE_LIST="
1345     gray
1346     hardcoded_tables
1347     omx_rpi
1348     runtime_cpudetect
1349     safe_bitstream_reader
1350     shared
1351     small
1352     sram
1353     static
1354     swscale_alpha
1355 "
1356
1357 LIBRARY_LIST="
1358     avcodec
1359     avdevice
1360     avfilter
1361     avformat
1362     avresample
1363     avutil
1364     swscale
1365 "
1366
1367 LICENSE_LIST="
1368     gpl
1369     nonfree
1370     version3
1371 "
1372
1373 PROGRAM_LIST="
1374     avconv
1375     avplay
1376     avprobe
1377 "
1378
1379 SUBSYSTEM_LIST="
1380     dct
1381     doc
1382     error_resilience
1383     faan
1384     fft
1385     lsp
1386     lzo
1387     mdct
1388     network
1389     rdft
1390 "
1391
1392 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1393 CONFIG_LIST="
1394     $EXAMPLE_LIST
1395     $EXTERNAL_LIBRARY_LIST
1396     $HWACCEL_LIBRARY_LIST
1397     $FEATURE_LIST
1398     $LICENSE_LIST
1399     $LIBRARY_LIST
1400     $PROGRAM_LIST
1401     $SUBSYSTEM_LIST
1402     $SYSTEM_LIBRARY_LIST
1403     neon_clobber_test
1404     pic
1405     pod2man
1406     texi2html
1407     thumb
1408     valgrind_backtrace
1409     xmm_clobber_test
1410     $COMPONENT_LIST
1411 "
1412
1413 THREADS_LIST="
1414     pthreads
1415     w32threads
1416 "
1417
1418 ATOMICS_LIST="
1419     atomics_gcc
1420     atomics_suncc
1421     atomics_win32
1422 "
1423
1424 ARCH_LIST="
1425     aarch64
1426     alpha
1427     arm
1428     avr32
1429     avr32_ap
1430     avr32_uc
1431     bfin
1432     ia64
1433     m68k
1434     mips
1435     mips64
1436     parisc
1437     ppc
1438     ppc64
1439     s390
1440     sh4
1441     sparc
1442     sparc64
1443     tilegx
1444     tilepro
1445     tomi
1446     x86
1447     x86_32
1448     x86_64
1449 "
1450
1451 ARCH_EXT_LIST_ARM="
1452     armv5te
1453     armv6
1454     armv6t2
1455     armv8
1456     neon
1457     vfp
1458     vfpv3
1459 "
1460
1461 ARCH_EXT_LIST_X86_SIMD="
1462     amd3dnow
1463     amd3dnowext
1464     avx
1465     avx2
1466     fma3
1467     fma4
1468     mmx
1469     mmxext
1470     sse
1471     sse2
1472     sse3
1473     sse4
1474     sse42
1475     ssse3
1476     xop
1477 "
1478
1479 ARCH_EXT_LIST_PPC="
1480     altivec
1481     dcbzl
1482     ldbrx
1483     power8
1484     ppc4xx
1485     vsx
1486 "
1487
1488 ARCH_EXT_LIST_X86="
1489     $ARCH_EXT_LIST_X86_SIMD
1490     cpunop
1491     i686
1492 "
1493
1494 ARCH_EXT_LIST_MIPS="
1495     loongson
1496     mips32r1
1497     mips64r1
1498     mips32r2
1499     mips64r2
1500     mips32r6
1501     mips64r6
1502 "
1503
1504 ARCH_EXT_LIST="
1505     $ARCH_EXT_LIST_ARM
1506     $ARCH_EXT_LIST_MIPS
1507     $ARCH_EXT_LIST_PPC
1508     $ARCH_EXT_LIST_X86
1509     vis
1510 "
1511
1512 ARCH_FEATURES="
1513     aligned_stack
1514     fast_64bit
1515     fast_clz
1516     fast_cmov
1517     local_aligned_8
1518     local_aligned_16
1519     local_aligned_32
1520     simd_align_16
1521     simd_align_32
1522 "
1523
1524 BUILTIN_LIST="
1525     atomic_cas_ptr
1526     machine_rw_barrier
1527     MemoryBarrier
1528     mm_empty
1529     rdtsc
1530     sem_timedwait
1531     sync_val_compare_and_swap
1532 "
1533 HAVE_LIST_CMDLINE="
1534     inline_asm
1535     symver
1536     x86asm
1537 "
1538
1539 HAVE_LIST_PUB="
1540     bigendian
1541     fast_unaligned
1542 "
1543
1544 HEADERS_LIST="
1545     AVFoundation_AVFoundation_h
1546     alsa_asoundlib_h
1547     altivec_h
1548     arpa_inet_h
1549     cdio_paranoia_h
1550     cdio_paranoia_paranoia_h
1551     d3d11_h
1552     dispatch_dispatch_h
1553     dev_bktr_ioctl_bt848_h
1554     dev_bktr_ioctl_meteor_h
1555     dev_ic_bt8xx_h
1556     dev_video_bktr_ioctl_bt848_h
1557     dev_video_meteor_ioctl_meteor_h
1558     direct_h
1559     dlfcn_h
1560     dxva_h
1561     gsm_h
1562     io_h
1563     mach_mach_time_h
1564     machine_ioctl_bt848_h
1565     machine_ioctl_meteor_h
1566     malloc_h
1567     poll_h
1568     sndio_h
1569     soundcard_h
1570     stdatomic_h
1571     sys_mman_h
1572     sys_param_h
1573     sys_resource_h
1574     sys_select_h
1575     sys_soundcard_h
1576     sys_time_h
1577     sys_un_h
1578     sys_videoio_h
1579     unistd_h
1580     valgrind_valgrind_h
1581     windows_h
1582     winsock2_h
1583 "
1584
1585 INTRINSICS_LIST="
1586     intrinsics_neon
1587 "
1588
1589 MATH_FUNCS="
1590     atanf
1591     atan2f
1592     cbrtf
1593     cosf
1594     exp2
1595     exp2f
1596     expf
1597     isinf
1598     isnan
1599     ldexpf
1600     llrint
1601     llrintf
1602     log2
1603     log2f
1604     log10f
1605     lrint
1606     lrintf
1607     powf
1608     rint
1609     round
1610     roundf
1611     sinf
1612     trunc
1613     truncf
1614 "
1615
1616 SYSTEM_FUNCS="
1617     aligned_malloc
1618     clock_gettime
1619     closesocket
1620     CommandLineToArgvW
1621     CoTaskMemFree
1622     CryptGenRandom
1623     fcntl
1624     flt_lim
1625     fork
1626     getaddrinfo
1627     gethrtime
1628     getopt
1629     GetProcessAffinityMask
1630     GetProcessMemoryInfo
1631     GetProcessTimes
1632     getrusage
1633     GetSystemTimeAsFileTime
1634     gettimeofday
1635     gmtime_r
1636     inet_aton
1637     isatty
1638     jack_port_get_latency_range
1639     LoadLibrary
1640     localtime_r
1641     mach_absolute_time
1642     MapViewOfFile
1643     memalign
1644     mkstemp
1645     mmap
1646     mprotect
1647     nanosleep
1648     posix_memalign
1649     sched_getaffinity
1650     SetConsoleTextAttribute
1651     setmode
1652     setrlimit
1653     Sleep
1654     strerror_r
1655     sysconf
1656     sysctl
1657     usleep
1658     VirtualAlloc
1659 "
1660
1661 TOOLCHAIN_FEATURES="
1662     as_dn_directive
1663     as_fpu_directive
1664     as_func
1665     as_object_arch
1666     asm_mod_q
1667     attribute_may_alias
1668     attribute_packed
1669     blocks_extension
1670     ebp_available
1671     ebx_available
1672     gnu_as
1673     ibm_asm
1674     inline_asm_labels
1675     pragma_deprecated
1676     symver_asm_label
1677     symver_gnu_asm
1678     vfp_args
1679     xform_asm
1680     xmm_clobbers
1681 "
1682
1683 TYPES_LIST="
1684     CONDITION_VARIABLE_Ptr
1685     socklen_t
1686     struct_addrinfo
1687     struct_group_source_req
1688     struct_ip_mreq_source
1689     struct_ipv6_mreq
1690     struct_pollfd
1691     struct_rusage_ru_maxrss
1692     struct_sockaddr_in6
1693     struct_sockaddr_sa_len
1694     struct_sockaddr_storage
1695     struct_v4l2_frmivalenum_discrete
1696 "
1697
1698 HAVE_LIST="
1699     $ARCH_EXT_LIST
1700     $(add_suffix _external $ARCH_EXT_LIST)
1701     $(add_suffix _inline   $ARCH_EXT_LIST)
1702     $ARCH_FEATURES
1703     $BUILTIN_LIST
1704     $HAVE_LIST_CMDLINE
1705     $HAVE_LIST_PUB
1706     $HEADERS_LIST
1707     $INTRINSICS_LIST
1708     $MATH_FUNCS
1709     $SYSTEM_FUNCS
1710     $THREADS_LIST
1711     $TOOLCHAIN_FEATURES
1712     $TYPES_LIST
1713     dos_paths
1714     dxva2_lib
1715     libc_msvcrt
1716     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1717     sdl
1718     section_data_rel_ro
1719     threads
1720     vaapi_drm
1721     vaapi_x11
1722     vdpau_x11
1723 "
1724
1725 # options emitted with CONFIG_ prefix but not available on the command line
1726 CONFIG_EXTRA="
1727     aandcttables
1728     ac3dsp
1729     audio_frame_queue
1730     audiodsp
1731     blockdsp
1732     bswapdsp
1733     cabac
1734     dirac_parse
1735     dvprofile
1736     faandct
1737     faanidct
1738     fdctdsp
1739     flacdsp
1740     fmtconvert
1741     g722dsp
1742     gmp
1743     golomb
1744     gplv3
1745     h263dsp
1746     h264chroma
1747     h264dsp
1748     h264parse
1749     h264pred
1750     h264qpel
1751     hevc_ps
1752     hpeldsp
1753     huffman
1754     huffyuvdsp
1755     huffyuvencdsp
1756     idctdsp
1757     iirfilter
1758     imdct15
1759     intrax8
1760     iso_media
1761     ividsp
1762     jpegtables
1763     lgplv3
1764     libx262
1765     libxcb_shape
1766     lpc
1767     lzf
1768     me_cmp
1769     mpeg_er
1770     mpegaudio
1771     mpegaudiodsp
1772     mpegaudioheader
1773     mpegvideo
1774     mpegvideoenc
1775     mss34dsp
1776     pixblockdsp
1777     qpeldsp
1778     qsv
1779     qsvdec
1780     qsvenc
1781     rangecoder
1782     riffdec
1783     riffenc
1784     rtpdec
1785     rtpenc_chain
1786     rv34dsp
1787     sinewin
1788     snappy
1789     srtp
1790     startcode
1791     texturedsp
1792     texturedspenc
1793     tpeldsp
1794     vaapi_encode
1795     vc1dsp
1796     videodsp
1797     vp3dsp
1798     vp56dsp
1799     vp8dsp
1800     wma_freqs
1801     wmv2dsp
1802 "
1803
1804 CMDLINE_SELECT="
1805     $ARCH_EXT_LIST
1806     $CONFIG_LIST
1807     $HAVE_LIST_CMDLINE
1808     $THREADS_LIST
1809     asm
1810     cross_compile
1811     debug
1812     extra_warnings
1813     logging
1814     lto
1815     optimizations
1816     rpath
1817 "
1818
1819 PATHS_LIST="
1820     bindir
1821     datadir
1822     docdir
1823     incdir
1824     libdir
1825     mandir
1826     prefix
1827     shlibdir
1828 "
1829
1830 CMDLINE_SET="
1831     $PATHS_LIST
1832     ar
1833     arch
1834     as
1835     cc
1836     objcc
1837     cpu
1838     cross_prefix
1839     custom_allocator
1840     dep_cc
1841     env
1842     extra_version
1843     host_cc
1844     host_cflags
1845     host_extralibs
1846     host_ld
1847     host_ldflags
1848     host_os
1849     ignore_tests
1850     ld
1851     logfile
1852     malloc_prefix
1853     nm
1854     optflags
1855     pkg_config
1856     pkg_config_flags
1857     random_seed
1858     samples
1859     sysinclude
1860     sysroot
1861     target_exec
1862     target_os
1863     target_path
1864     target_samples
1865     toolchain
1866 "
1867
1868 CMDLINE_APPEND="
1869     extra_cflags
1870     extra_objcflags
1871     host_cppflags
1872 "
1873
1874 # code dependency declarations
1875
1876 # architecture extensions
1877
1878 armv5te_deps="arm"
1879 armv6_deps="arm"
1880 armv6t2_deps="arm"
1881 armv8_deps="aarch64"
1882 neon_deps_any="aarch64 arm"
1883 intrinsics_neon_deps="neon"
1884 vfp_deps_any="aarch64 arm"
1885 vfpv3_deps="vfp"
1886
1887 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1888
1889 altivec_deps="ppc"
1890 ppc4xx_deps="ppc"
1891 vsx_deps="altivec"
1892 power8_deps="vsx"
1893
1894 cpunop_deps="i686"
1895 x86_64_select="i686"
1896 x86_64_suggest="fast_cmov"
1897
1898 amd3dnow_deps="mmx"
1899 amd3dnowext_deps="amd3dnow"
1900 i686_deps="x86"
1901 mmx_deps="x86"
1902 mmxext_deps="mmx"
1903 sse_deps="mmxext"
1904 sse2_deps="sse"
1905 sse3_deps="sse2"
1906 ssse3_deps="sse3"
1907 sse4_deps="ssse3"
1908 sse42_deps="sse4"
1909 avx_deps="sse42"
1910 xop_deps="avx"
1911 fma3_deps="avx"
1912 fma4_deps="avx"
1913 avx2_deps="avx"
1914
1915 mmx_external_deps="x86asm"
1916 mmx_inline_deps="inline_asm"
1917 mmx_suggest="mmx_external mmx_inline"
1918
1919 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1920     eval dep=\$${ext}_deps
1921     eval ${ext}_external_deps='"${dep}_external"'
1922     eval ${ext}_inline_deps='"${dep}_inline"'
1923     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1924 done
1925
1926 aligned_stack_if_any="aarch64 ppc x86"
1927 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1928 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1929 fast_unaligned_if_any="aarch64 ppc x86"
1930 simd_align_16_if_any="altivec neon sse"
1931 simd_align_32_if_any="avx"
1932
1933 # system capabilities
1934 symver_if_any="symver_asm_label symver_gnu_asm"
1935 valgrind_backtrace_conflict="optimizations"
1936 valgrind_backtrace_deps="valgrind_valgrind_h"
1937
1938 # threading support
1939 atomics_gcc_if="sync_val_compare_and_swap"
1940 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1941 atomics_win32_if="MemoryBarrier"
1942 atomics_native_if_any="$ATOMICS_LIST"
1943 w32threads_deps="atomics_native"
1944 threads_if_any="$THREADS_LIST"
1945
1946 # subsystems
1947 dct_select="rdft"
1948 dirac_parse_select="golomb"
1949 error_resilience_select="me_cmp"
1950 faandct_deps="faan fdctdsp"
1951 faanidct_deps="faan idctdsp"
1952 h264dsp_select="startcode"
1953 hevc_ps_select="golomb"
1954 intrax8_select="blockdsp idctdsp"
1955 mdct_select="fft"
1956 rdft_select="fft"
1957 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1958 mpeg_er_select="error_resilience"
1959 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1960 mpegaudiodsp_select="dct"
1961 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1962 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1963 vc1dsp_select="h264chroma qpeldsp startcode"
1964
1965 # decoders / encoders
1966 aac_decoder_select="imdct15 mdct sinewin"
1967 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1968 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1969 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1970 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1971 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1972 adpcm_g722_decoder_select="g722dsp"
1973 adpcm_g722_encoder_select="g722dsp"
1974 aic_decoder_select="golomb idctdsp"
1975 alac_encoder_select="lpc"
1976 als_decoder_select="bswapdsp"
1977 amrnb_decoder_select="lsp"
1978 amrwb_decoder_select="lsp"
1979 amv_decoder_select="sp5x_decoder"
1980 ape_decoder_select="bswapdsp"
1981 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1982 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1983 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1984 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1985 atrac1_decoder_select="mdct sinewin"
1986 atrac3_decoder_select="mdct"
1987 atrac3p_decoder_select="mdct sinewin"
1988 bink_decoder_select="blockdsp hpeldsp"
1989 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1990 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1991 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1992 cllc_decoder_select="bswapdsp"
1993 comfortnoise_encoder_select="lpc"
1994 cook_decoder_select="audiodsp mdct sinewin"
1995 cscd_decoder_select="lzo"
1996 cscd_decoder_suggest="zlib"
1997 dca_decoder_select="fmtconvert mdct"
1998 dds_decoder_select="texturedsp"
1999 dnxhd_decoder_select="blockdsp idctdsp"
2000 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2001 dvvideo_decoder_select="dvprofile idctdsp"
2002 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2003 dxa_decoder_deps="zlib"
2004 dxv_decoder_select="lzf texturedsp"
2005 eac3_decoder_select="ac3_decoder"
2006 eac3_encoder_select="ac3_encoder"
2007 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2008 eatgq_decoder_select="aandcttables idctdsp"
2009 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2010 exr_decoder_deps="zlib"
2011 ffv1_decoder_select="rangecoder"
2012 ffv1_encoder_select="rangecoder"
2013 ffvhuff_decoder_select="huffyuv_decoder"
2014 ffvhuff_encoder_select="huffyuv_encoder"
2015 fic_decoder_select="golomb"
2016 flac_decoder_select="flacdsp"
2017 flac_encoder_select="bswapdsp flacdsp lpc"
2018 flashsv_decoder_deps="zlib"
2019 flashsv_encoder_deps="zlib"
2020 flashsv2_decoder_deps="zlib"
2021 flv_decoder_select="h263_decoder"
2022 flv_encoder_select="h263_encoder"
2023 fourxm_decoder_select="blockdsp bswapdsp"
2024 fraps_decoder_select="bswapdsp huffman"
2025 g2m_decoder_deps="zlib"
2026 g2m_decoder_select="blockdsp idctdsp jpegtables"
2027 h261_decoder_select="mpeg_er mpegvideo"
2028 h261_encoder_select="aandcttables mpegvideoenc"
2029 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2030 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2031 h263i_decoder_select="h263_decoder"
2032 h263p_encoder_select="h263_encoder"
2033 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2034 h264_decoder_suggest="error_resilience"
2035 hap_decoder_select="snappy texturedsp"
2036 hap_encoder_deps="libsnappy"
2037 hap_encoder_select="texturedspenc"
2038 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2039 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2040 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2041 iac_decoder_select="imc_decoder"
2042 imc_decoder_select="bswapdsp fft mdct sinewin"
2043 indeo3_decoder_select="hpeldsp"
2044 indeo4_decoder_select="ividsp"
2045 indeo5_decoder_select="ividsp"
2046 interplay_video_decoder_select="hpeldsp"
2047 jpegls_decoder_select="mjpeg_decoder"
2048 jv_decoder_select="blockdsp"
2049 lagarith_decoder_select="huffyuvdsp"
2050 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2051 magicyuv_decoder_select="huffyuvdsp"
2052 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2053 metasound_decoder_select="lsp mdct sinewin"
2054 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2055 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2056 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2057 mjpegb_decoder_select="mjpeg_decoder"
2058 mlp_decoder_select="mlp_parser"
2059 motionpixels_decoder_select="bswapdsp"
2060 mp1_decoder_select="mpegaudio"
2061 mp1float_decoder_select="mpegaudio"
2062 mp2_decoder_select="mpegaudio"
2063 mp2float_decoder_select="mpegaudio"
2064 mp3_decoder_select="mpegaudio"
2065 mp3adu_decoder_select="mpegaudio"
2066 mp3adufloat_decoder_select="mpegaudio"
2067 mp3float_decoder_select="mpegaudio"
2068 mp3on4_decoder_select="mpegaudio"
2069 mp3on4float_decoder_select="mpegaudio"
2070 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2071 mpc8_decoder_select="mpegaudiodsp"
2072 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2073 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2074 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2075 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2076 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2077 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2078 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2079 mpeg4_encoder_select="h263_encoder"
2080 msa1_decoder_select="mss34dsp"
2081 msmpeg4v1_decoder_select="h263_decoder"
2082 msmpeg4v2_decoder_select="h263_decoder"
2083 msmpeg4v2_encoder_select="h263_encoder"
2084 msmpeg4v3_decoder_select="h263_decoder"
2085 msmpeg4v3_encoder_select="h263_encoder"
2086 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2087 mts2_decoder_select="mss34dsp"
2088 mxpeg_decoder_select="mjpeg_decoder"
2089 nellymoser_decoder_select="mdct sinewin"
2090 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2091 nuv_decoder_select="idctdsp lzo"
2092 on2avc_decoder_select="mdct"
2093 opus_decoder_deps="avresample"
2094 opus_decoder_select="imdct15"
2095 png_decoder_deps="zlib"
2096 png_encoder_deps="zlib"
2097 png_encoder_select="huffyuvencdsp"
2098 prores_decoder_select="idctdsp"
2099 prores_encoder_select="fdctdsp"
2100 qcelp_decoder_select="lsp"
2101 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2102 ra_144_encoder_select="audio_frame_queue lpc"
2103 ralf_decoder_select="golomb"
2104 rscc_decoder_deps="zlib"
2105 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2106 rv10_encoder_select="h263_encoder"
2107 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2108 rv20_encoder_select="h263_encoder"
2109 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2110 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2111 screenpresso_decoder_deps="zlib"
2112 sipr_decoder_select="lsp"
2113 sp5x_decoder_select="mjpeg_decoder"
2114 svq1_decoder_select="hpeldsp"
2115 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2116 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2117 svq3_decoder_suggest="zlib"
2118 tak_decoder_select="audiodsp"
2119 tdsc_decoder_deps="zlib"
2120 tdsc_decoder_select="mjpeg_decoder"
2121 theora_decoder_select="vp3_decoder"
2122 thp_decoder_select="mjpeg_decoder"
2123 tiff_decoder_suggest="zlib"
2124 tiff_encoder_suggest="zlib"
2125 truehd_decoder_select="mlp_decoder"
2126 truemotion2_decoder_select="bswapdsp"
2127 truespeech_decoder_select="bswapdsp"
2128 tscc_decoder_deps="zlib"
2129 txd_decoder_select="texturedsp"
2130 twinvq_decoder_select="mdct lsp sinewin"
2131 utvideo_decoder_select="bswapdsp"
2132 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2133 vble_decoder_select="huffyuvdsp"
2134 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2135 vc1image_decoder_select="vc1_decoder"
2136 vorbis_decoder_select="mdct"
2137 vorbis_encoder_select="mdct"
2138 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2139 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2140 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2141 vp6a_decoder_select="vp6_decoder"
2142 vp6f_decoder_select="vp6_decoder"
2143 vp7_decoder_select="h264pred videodsp vp8dsp"
2144 vp8_decoder_select="h264pred videodsp vp8dsp"
2145 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2146 webp_decoder_select="vp8_decoder"
2147 wmapro_decoder_select="mdct sinewin wma_freqs"
2148 wmav1_decoder_select="mdct sinewin wma_freqs"
2149 wmav1_encoder_select="mdct sinewin wma_freqs"
2150 wmav2_decoder_select="mdct sinewin wma_freqs"
2151 wmav2_encoder_select="mdct sinewin wma_freqs"
2152 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2153 wmv1_decoder_select="h263_decoder"
2154 wmv1_encoder_select="h263_encoder"
2155 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2156 wmv2_encoder_select="h263_encoder wmv2dsp"
2157 wmv3_decoder_select="vc1_decoder"
2158 wmv3image_decoder_select="wmv3_decoder"
2159 zerocodec_decoder_deps="zlib"
2160 zlib_decoder_deps="zlib"
2161 zlib_encoder_deps="zlib"
2162 zmbv_decoder_deps="zlib"
2163 zmbv_encoder_deps="zlib"
2164
2165 # hardware accelerators
2166 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2167 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2168 dxva2_lib_deps="dxva2"
2169 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2170 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2171
2172 h263_vaapi_hwaccel_deps="vaapi"
2173 h263_vaapi_hwaccel_select="h263_decoder"
2174 h264_d3d11va_hwaccel_deps="d3d11va"
2175 h264_d3d11va_hwaccel_select="h264_decoder"
2176 h264_dxva2_hwaccel_deps="dxva2"
2177 h264_dxva2_hwaccel_select="h264_decoder"
2178 h264_mmal_hwaccel_deps="mmal"
2179 h264_qsv_hwaccel_deps="libmfx"
2180 h264_vaapi_hwaccel_deps="vaapi"
2181 h264_vaapi_hwaccel_select="h264_decoder"
2182 h264_vda_hwaccel_deps="vda"
2183 h264_vda_hwaccel_select="h264_decoder"
2184 h264_vda_old_hwaccel_deps="vda"
2185 h264_vda_old_hwaccel_select="h264_decoder"
2186 h264_vdpau_hwaccel_deps="vdpau"
2187 h264_vdpau_hwaccel_select="h264_decoder"
2188 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2189 hevc_d3d11va_hwaccel_select="hevc_decoder"
2190 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2191 hevc_dxva2_hwaccel_select="hevc_decoder"
2192 hevc_qsv_hwaccel_deps="libmfx"
2193 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2194 hevc_vaapi_hwaccel_select="hevc_decoder"
2195 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2196 hevc_vdpau_hwaccel_select="hevc_decoder"
2197 mpeg1_vdpau_hwaccel_deps="vdpau"
2198 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2199 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2200 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2201 mpeg2_dxva2_hwaccel_deps="dxva2"
2202 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2203 mpeg2_mmal_hwaccel_deps="mmal"
2204 mpeg2_qsv_hwaccel_deps="libmfx"
2205 mpeg2_vaapi_hwaccel_deps="vaapi"
2206 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2207 mpeg2_vdpau_hwaccel_deps="vdpau"
2208 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2209 mpeg4_vaapi_hwaccel_deps="vaapi"
2210 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2211 mpeg4_vdpau_hwaccel_deps="vdpau"
2212 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2213 vc1_d3d11va_hwaccel_deps="d3d11va"
2214 vc1_d3d11va_hwaccel_select="vc1_decoder"
2215 vc1_dxva2_hwaccel_deps="dxva2"
2216 vc1_dxva2_hwaccel_select="vc1_decoder"
2217 vc1_mmal_hwaccel_deps="mmal"
2218 vc1_qsv_hwaccel_deps="libmfx"
2219 vc1_vaapi_hwaccel_deps="vaapi"
2220 vc1_vaapi_hwaccel_select="vc1_decoder"
2221 vc1_vdpau_hwaccel_deps="vdpau"
2222 vc1_vdpau_hwaccel_select="vc1_decoder"
2223 vp8_qsv_hwaccel_deps="libmfx"
2224 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2225 vp8_vaapi_hwaccel_select="vp8_decoder"
2226 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2227 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2228 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2229 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2230
2231 # hardware-accelerated codecs
2232 nvenc_deps_any="libdl LoadLibrary"
2233 omx_deps="libdl pthreads"
2234 omx_rpi_select="omx"
2235 qsvdec_select="qsv"
2236 qsvenc_select="qsv"
2237 vaapi_encode_deps="vaapi"
2238
2239 hwupload_cuda_filter_deps="cuda"
2240 scale_npp_filter_deps="cuda libnpp"
2241
2242 h264_mmal_decoder_deps="mmal"
2243 h264_nvenc_encoder_deps="nvenc"
2244 h264_omx_encoder_deps="omx"
2245 h264_qsv_decoder_deps="libmfx"
2246 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2247 h264_qsv_encoder_deps="libmfx"
2248 h264_qsv_encoder_select="qsvenc"
2249 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2250 h264_vaapi_encoder_select="vaapi_encode golomb"
2251 hevc_nvenc_encoder_deps="nvenc"
2252 hevc_qsv_decoder_deps="libmfx"
2253 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2254 hevc_qsv_encoder_deps="libmfx"
2255 hevc_qsv_encoder_select="hevc_ps qsvenc"
2256 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2257 hevc_vaapi_encoder_select="vaapi_encode golomb"
2258 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2259 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2260 mpeg2_mmal_decoder_deps="mmal"
2261 mpeg2_qsv_decoder_deps="libmfx"
2262 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2263 mpeg2_qsv_encoder_deps="libmfx"
2264 mpeg2_qsv_encoder_select="qsvenc"
2265 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2266 mpeg2_vaapi_encoder_select="vaapi_encode"
2267 mpeg4_omx_encoder_deps="omx"
2268 vc1_mmal_decoder_deps="mmal"
2269 vc1_qsv_decoder_deps="libmfx"
2270 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2271 vp8_qsv_decoder_deps="libmfx"
2272 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2273 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2274 vp8_vaapi_encoder_select="vaapi_encode"
2275
2276 nvenc_h264_encoder_select="h264_nvenc_encoder"
2277 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2278
2279 # parsers
2280 h264_parser_select="golomb h264dsp h264parse"
2281 hevc_parser_select="hevc_ps"
2282 mpegaudio_parser_select="mpegaudioheader"
2283 mpegvideo_parser_select="mpegvideo"
2284 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2285 vc1_parser_select="vc1dsp"
2286
2287 # bitstream_filters
2288 mjpeg2jpeg_bsf_select="jpegtables"
2289
2290 # external libraries
2291 avisynth_deps="LoadLibrary"
2292 avxsynth_deps="libdl"
2293 avisynth_demuxer_deps_any="avisynth avxsynth"
2294 avisynth_demuxer_select="riffdec"
2295 libdcadec_decoder_deps="libdcadec"
2296 libfaac_encoder_deps="libfaac"
2297 libfaac_encoder_select="audio_frame_queue"
2298 libfdk_aac_decoder_deps="libfdk_aac"
2299 libfdk_aac_encoder_deps="libfdk_aac"
2300 libfdk_aac_encoder_select="audio_frame_queue"
2301 libgsm_decoder_deps="libgsm"
2302 libgsm_encoder_deps="libgsm"
2303 libgsm_ms_decoder_deps="libgsm"
2304 libgsm_ms_encoder_deps="libgsm"
2305 libilbc_decoder_deps="libilbc"
2306 libilbc_encoder_deps="libilbc"
2307 libkvazaar_encoder_deps="libkvazaar"
2308 libmp3lame_encoder_deps="libmp3lame"
2309 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2310 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2311 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2312 libopencore_amrnb_encoder_select="audio_frame_queue"
2313 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2314 libopenh264_decoder_deps="libopenh264"
2315 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2316 libopenh264_encoder_deps="libopenh264"
2317 libopenjpeg_decoder_deps="libopenjpeg"
2318 libopenjpeg_encoder_deps="libopenjpeg"
2319 libopus_decoder_deps="libopus"
2320 libopus_encoder_deps="libopus"
2321 libopus_encoder_select="audio_frame_queue"
2322 libschroedinger_decoder_deps="libschroedinger"
2323 libschroedinger_encoder_deps="libschroedinger"
2324 libspeex_decoder_deps="libspeex"
2325 libspeex_encoder_deps="libspeex"
2326 libspeex_encoder_select="audio_frame_queue"
2327 libtheora_encoder_deps="libtheora"
2328 libtwolame_encoder_deps="libtwolame"
2329 libvo_aacenc_encoder_deps="libvo_aacenc"
2330 libvo_aacenc_encoder_select="audio_frame_queue"
2331 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2332 libvorbis_encoder_deps="libvorbis"
2333 libvorbis_encoder_select="audio_frame_queue"
2334 libvpx_vp8_decoder_deps="libvpx"
2335 libvpx_vp8_encoder_deps="libvpx"
2336 libvpx_vp9_decoder_deps="libvpx"
2337 libvpx_vp9_encoder_deps="libvpx"
2338 libwavpack_encoder_deps="libwavpack"
2339 libwavpack_encoder_select="audio_frame_queue"
2340 libwebp_encoder_deps="libwebp"
2341 libx262_encoder_deps="libx262"
2342 libx264_encoder_deps="libx264"
2343 libx265_encoder_deps="libx265"
2344 libxavs_encoder_deps="libxavs"
2345 libxvid_encoder_deps="libxvid mkstemp"
2346
2347 # demuxers / muxers
2348 ac3_demuxer_select="ac3_parser"
2349 asf_demuxer_select="riffdec"
2350 asf_muxer_select="riffenc"
2351 asf_stream_muxer_select="asf_muxer"
2352 avi_demuxer_select="iso_media riffdec"
2353 avi_muxer_select="riffenc"
2354 caf_demuxer_select="iso_media riffdec"
2355 dash_muxer_select="mp4_muxer"
2356 dirac_demuxer_select="dirac_parser"
2357 dv_demuxer_select="dvprofile"
2358 dv_muxer_select="dvprofile"
2359 dxa_demuxer_select="riffdec"
2360 eac3_demuxer_select="ac3_parser"
2361 f4v_muxer_select="mov_muxer"
2362 flac_demuxer_select="flac_parser"
2363 hds_muxer_select="flv_muxer"
2364 hls_muxer_select="mpegts_muxer"
2365 ipod_muxer_select="mov_muxer"
2366 ismv_muxer_select="mov_muxer"
2367 matroska_audio_muxer_select="matroska_muxer"
2368 matroska_demuxer_select="iso_media riffdec"
2369 matroska_demuxer_suggest="bzlib lzo zlib"
2370 matroska_muxer_select="iso_media riffenc"
2371 mmf_muxer_select="riffenc"
2372 mov_demuxer_select="iso_media riffdec"
2373 mov_demuxer_suggest="zlib"
2374 mov_muxer_select="iso_media riffenc rtpenc_chain"
2375 mp3_demuxer_select="mpegaudio_parser"
2376 mp3_muxer_select="mpegaudioheader"
2377 mp4_muxer_select="mov_muxer"
2378 mpegts_demuxer_select="iso_media"
2379 mpegts_muxer_select="adts_muxer latm_muxer"
2380 mpegtsraw_demuxer_select="mpegts_demuxer"
2381 mxf_d10_muxer_select="mxf_muxer"
2382 nut_muxer_select="riffenc"
2383 nuv_demuxer_select="riffdec"
2384 oga_muxer_select="ogg_muxer"
2385 ogg_demuxer_select="dirac_parse"
2386 opus_muxer_select="ogg_muxer"
2387 psp_muxer_select="mov_muxer"
2388 rtp_demuxer_select="sdp_demuxer"
2389 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2390 rtsp_demuxer_select="http_protocol rtpdec"
2391 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2392 sap_demuxer_select="sdp_demuxer"
2393 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2394 sdp_demuxer_select="rtpdec"
2395 smoothstreaming_muxer_select="ismv_muxer"
2396 spdif_muxer_select="aac_parser"
2397 spx_muxer_select="ogg_muxer"
2398 swf_demuxer_suggest="zlib"
2399 tak_demuxer_select="tak_parser"
2400 tg2_muxer_select="mov_muxer"
2401 tgp_muxer_select="mov_muxer"
2402 w64_demuxer_select="wav_demuxer"
2403 wav_demuxer_select="riffdec"
2404 wav_muxer_select="riffenc"
2405 webm_muxer_select="iso_media riffenc"
2406 wtv_demuxer_select="mpegts_demuxer riffdec"
2407 xmv_demuxer_select="riffdec"
2408 xwma_demuxer_select="riffdec"
2409
2410 # indevs / outdevs
2411 alsa_indev_deps="alsa"
2412 alsa_outdev_deps="alsa"
2413 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2414 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2415 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2416 dv1394_indev_deps="dv1394"
2417 dv1394_indev_select="dv_demuxer"
2418 fbdev_indev_deps="linux_fb_h"
2419 jack_indev_deps="jack"
2420 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2421 libcdio_indev_deps="libcdio"
2422 libdc1394_indev_deps="libdc1394"
2423 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2424 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2425 pulse_indev_deps="libpulse"
2426 sndio_indev_deps="sndio"
2427 sndio_outdev_deps="sndio"
2428 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2429 vfwcap_indev_deps="vfw32 vfwcap_defines"
2430 xcbgrab_indev_deps="libxcb libxcb_shape"
2431 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2432
2433 # protocols
2434 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2435 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2436 ffrtmpcrypt_protocol_select="tcp_protocol"
2437 ffrtmphttp_protocol_conflict="librtmp_protocol"
2438 ffrtmphttp_protocol_select="http_protocol"
2439 gopher_protocol_select="network"
2440 http_protocol_select="tcp_protocol"
2441 httpproxy_protocol_select="tcp_protocol"
2442 https_protocol_select="tls_protocol"
2443 icecast_protocol_select="http_protocol"
2444 librtmp_protocol_deps="librtmp"
2445 librtmpe_protocol_deps="librtmp"
2446 librtmps_protocol_deps="librtmp"
2447 librtmpt_protocol_deps="librtmp"
2448 librtmpte_protocol_deps="librtmp"
2449 mmsh_protocol_select="http_protocol"
2450 mmst_protocol_select="network"
2451 rtmp_protocol_conflict="librtmp_protocol"
2452 rtmp_protocol_select="tcp_protocol"
2453 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2454 rtmps_protocol_conflict="librtmp_protocol"
2455 rtmps_protocol_select="tls_protocol"
2456 rtmpt_protocol_select="ffrtmphttp_protocol"
2457 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2458 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2459 rtp_protocol_select="udp_protocol"
2460 sctp_protocol_deps="struct_sctp_event_subscribe"
2461 sctp_protocol_select="network"
2462 srtp_protocol_select="rtp_protocol srtp"
2463 tcp_protocol_select="network"
2464 tls_gnutls_protocol_deps="gnutls"
2465 tls_gnutls_protocol_select="tcp_protocol"
2466 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2467 tls_openssl_protocol_deps="openssl"
2468 tls_openssl_protocol_select="tcp_protocol"
2469 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2470 udp_protocol_select="network"
2471 unix_protocol_deps="sys_un_h"
2472 unix_protocol_select="network"
2473
2474 # filters
2475 asyncts_filter_deps="avresample"
2476 blackframe_filter_deps="gpl"
2477 boxblur_filter_deps="gpl"
2478 bs2b_filter_deps="libbs2b"
2479 cropdetect_filter_deps="gpl"
2480 deinterlace_qsv_filter_deps="libmfx"
2481 deinterlace_vaapi_filter_deps="vaapi"
2482 delogo_filter_deps="gpl"
2483 drawtext_filter_deps="libfreetype"
2484 drawtext_filter_suggest="libfontconfig"
2485 frei0r_filter_deps="frei0r libdl"
2486 frei0r_src_filter_deps="frei0r libdl"
2487 hdcd_filter_deps="libhdcd"
2488 hqdn3d_filter_deps="gpl"
2489 interlace_filter_deps="gpl"
2490 movie_filter_deps="avcodec avformat"
2491 ocv_filter_deps="libopencv"
2492 resample_filter_deps="avresample"
2493 scale_filter_deps="swscale"
2494 scale_qsv_filter_deps="libmfx"
2495 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2496
2497 # examples
2498 decode_audio_example_deps="avcodec avutil"
2499 decode_video_example_deps="avcodec avutil"
2500 encode_audio_example_deps="avcodec avutil"
2501 encode_video_example_deps="avcodec avutil"
2502 filter_audio_example_deps="avfilter avutil"
2503 metadata_example_deps="avformat avutil"
2504 output_example_deps="avcodec avformat avresample avutil swscale"
2505 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2506 transcode_aac_example_deps="avcodec avformat avresample"
2507
2508 # EXTRALIBS_LIST
2509 cpu_init_extralibs="pthreads_extralibs"
2510 cws2fws_extralibs="zlib_extralibs"
2511
2512 # libraries, in linking order
2513 avcodec_deps="avutil"
2514 avcodec_select="null_bsf"
2515 avdevice_deps="avformat avcodec avutil"
2516 avfilter_deps="avutil"
2517 avformat_deps="avcodec avutil"
2518 avformat_suggest="network"
2519 avresample_deps="avutil"
2520 swscale_deps="avutil"
2521
2522 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2523 avdevice_extralibs="libm_extralibs"
2524 avformat_extralibs="libm_extralibs"
2525 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2526 avresample_extralibs="libm_extralibs"
2527 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2528 swscale_extralibs="libm_extralibs"
2529
2530 # programs
2531 avconv_deps="avcodec avfilter avformat avresample swscale"
2532 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2533                fps_filter null_filter resample_filter scale_filter
2534                trim_filter"
2535 avconv_suggest="dxva2_lib ole32 psapi shell32"
2536 avplay_deps="avcodec avfilter avformat avresample sdl"
2537 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2538 avplay_suggest="shell32"
2539 avprobe_deps="avcodec avformat"
2540 avprobe_suggest="shell32"
2541
2542 # documentation
2543 pod2man_deps="doc"
2544 texi2html_deps="doc"
2545
2546 # default parameters
2547
2548 logfile="avbuild/config.log"
2549
2550 # installation paths
2551 prefix_default="/usr/local"
2552 bindir_default='${prefix}/bin'
2553 datadir_default='${prefix}/share/avconv'
2554 docdir_default='${prefix}/share/doc/libav'
2555 incdir_default='${prefix}/include'
2556 libdir_default='${prefix}/lib'
2557 mandir_default='${prefix}/share/man'
2558 shlibdir_default="$libdir_default"
2559
2560 # toolchain
2561 ar_default="ar"
2562 cc_default="gcc"
2563 host_cc_default="gcc"
2564 ln_s="ln -s -f"
2565 nm_default="nm -g"
2566 pkg_config_default=pkg-config
2567 ranlib="ranlib"
2568 strip="strip"
2569 version_script='--version-script'
2570 x86asmexe="yasm"
2571
2572 # machine
2573 arch_default=$(uname -m)
2574 cpu="generic"
2575 intrinsics="none"
2576
2577 # OS
2578 target_os_default=$(tolower $(uname -s))
2579 host_os=$target_os_default
2580
2581 # configurable options
2582 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2583
2584 enable asm
2585 enable debug
2586 enable doc
2587 enable faan faandct faanidct
2588 enable optimizations
2589 enable safe_bitstream_reader
2590 enable static
2591 enable swscale_alpha
2592 enable valgrind_backtrace
2593
2594 # By default, enable only those hwaccels that have no external dependencies.
2595 enable d3d11va dxva2 vda vdpau
2596
2597 # internal components are enabled by default
2598 enable $EXTRALIBS_LIST
2599
2600 # Avoid external, non-system, libraries getting enabled by dependency resolution
2601 disable $EXTERNAL_LIBRARY_LIST
2602
2603 # build settings
2604 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2605 LIBPREF="lib"
2606 LIBSUF=".a"
2607 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2608 SLIBPREF="lib"
2609 SLIBSUF=".so"
2610 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2611 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2612 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2613 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2614 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2615 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2616 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2617
2618 asflags_filter=echo
2619 cflags_filter=echo
2620 ldflags_filter=echo
2621
2622 AS_C='-c'
2623 AS_O='-o $@'
2624 CC_C='-c'
2625 CC_E='-E -o $@'
2626 CC_O='-o $@'
2627 OBJCC_C='-c'
2628 OBJCC_E='-E -o $@'
2629 OBJCC_O='-o $@'
2630 X86ASM_O='-o $@'
2631 LD_O='-o $@'
2632 LD_LIB='-l%'
2633 LD_PATH='-L'
2634 HOSTCC_C='-c'
2635 HOSTCC_E='-E -o $@'
2636 HOSTCC_O='-o $@'
2637 HOSTLD_O='-o $@'
2638
2639 host_extralibs='-lm'
2640 host_cflags_filter=echo
2641 host_ldflags_filter=echo
2642
2643 target_path='$(CURDIR)'
2644
2645 # since the object filename is not given with the -MM flag, the compiler
2646 # is only able to print the basename, and we must add the path ourselves
2647 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2648 DEPFLAGS='-MM'
2649
2650 mkdir -p avbuild
2651
2652 # find source path
2653 if test -f configure; then
2654     source_path=.
2655 else
2656     source_path=$(cd $(dirname "$0"); pwd)
2657     echo "$source_path" | grep -q '[[:blank:]]' &&
2658         die "Out of tree builds are impossible with whitespace in source path."
2659     test -e "$source_path/config.h" &&
2660         die "Out of tree builds are impossible with config.h in source dir."
2661 fi
2662
2663 for v in "$@"; do
2664     r=${v#*=}
2665     l=${v%"$r"}
2666     r=$(sh_quote "$r")
2667     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2668 done
2669
2670 find_things(){
2671     thing=$1
2672     pattern=$2
2673     file=$source_path/$3
2674     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2675 }
2676
2677 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2678 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2679 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2680 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2681 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2682 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2683 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2684 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2685 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2686
2687 find_things_extern(){
2688     thing=$1
2689     pattern=$2
2690     file=$source_path/$3
2691     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2692 }
2693
2694 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2695 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2696
2697 AVCODEC_COMPONENTS_LIST="
2698     $BSF_LIST
2699     $DECODER_LIST
2700     $ENCODER_LIST
2701     $HWACCEL_LIST
2702     $PARSER_LIST
2703 "
2704
2705 AVDEVICE_COMPONENTS_LIST="
2706     $INDEV_LIST
2707     $OUTDEV_LIST
2708 "
2709
2710 AVFILTER_COMPONENTS_LIST="
2711     $FILTER_LIST
2712 "
2713
2714 AVFORMAT_COMPONENTS_LIST="
2715     $DEMUXER_LIST
2716     $MUXER_LIST
2717     $PROTOCOL_LIST
2718 "
2719
2720 ALL_COMPONENTS="
2721     $AVCODEC_COMPONENTS_LIST
2722     $AVDEVICE_COMPONENTS_LIST
2723     $AVFILTER_COMPONENTS_LIST
2724     $AVFORMAT_COMPONENTS_LIST
2725 "
2726
2727 for n in $COMPONENT_LIST; do
2728     v=$(toupper ${n%s})_LIST
2729     eval enable \$$v
2730     eval ${n}_if_any="\$$v"
2731 done
2732
2733 enable $ARCH_EXT_LIST
2734
2735 die_unknown(){
2736     echo "Unknown option \"$1\"."
2737     echo "See $0 --help for available options."
2738     exit 1
2739 }
2740
2741 print_3_columns() {
2742     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2743 }
2744
2745 show_list() {
2746     suffix=_$1
2747     shift
2748     echo $* | sed s/$suffix//g | print_3_columns
2749     exit 0
2750 }
2751
2752 rand_list(){
2753     IFS=', '
2754     set -- $*
2755     unset IFS
2756     for thing; do
2757         comp=${thing%:*}
2758         prob=${thing#$comp}
2759         prob=${prob#:}
2760         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2761         echo "prob ${prob:-0.5}"
2762         printf '%s\n' $comp
2763     done
2764 }
2765
2766 do_random(){
2767     action=$1
2768     shift
2769     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2770     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2771 }
2772
2773 for opt do
2774     optval="${opt#*=}"
2775     case "$opt" in
2776         --extra-ldflags=*)
2777             add_ldflags $optval
2778         ;;
2779         --extra-ldexeflags=*)
2780             add_ldexeflags $optval
2781         ;;
2782         --extra-libs=*)
2783             add_extralibs $optval
2784         ;;
2785         --disable-devices)
2786             disable $INDEV_LIST $OUTDEV_LIST
2787         ;;
2788         --enable-debug=*)
2789             debuglevel="$optval"
2790         ;;
2791         --disable-programs)
2792             disable $PROGRAM_LIST
2793         ;;
2794         --disable-everything)
2795             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2796         ;;
2797         --disable-all)
2798             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2799             disable $LIBRARY_LIST $PROGRAM_LIST doc
2800         ;;
2801         --enable-random|--disable-random)
2802             action=${opt%%-random}
2803             do_random ${action#--} $COMPONENT_LIST
2804         ;;
2805         --enable-random=*|--disable-random=*)
2806             action=${opt%%-random=*}
2807             do_random ${action#--} $optval
2808         ;;
2809         --enable-*=*|--disable-*=*)
2810             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2811             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2812             eval list=\$$(toupper $thing)_LIST
2813             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2814             $action $(filter "$name" $list)
2815         ;;
2816         --enable-avserver|--disable-avserver*)
2817             warn "avserver has been removed, the ${opt} option is only"\
2818                  "provided for compatibility and will be removed in the future"
2819         ;;
2820         --enable-yasm|--disable-yasm)
2821             warn "The ${opt} option is only provided for compatibility and will be\n"\
2822                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2823             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2824         ;;
2825         --enable-?*|--disable-?*)
2826             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2827             if is_in $option $COMPONENT_LIST; then
2828                 test $action = disable && action=unset
2829                 eval $action \$$(toupper ${option%s})_LIST
2830             elif is_in $option $CMDLINE_SELECT; then
2831                 $action $option
2832             else
2833                 die_unknown $opt
2834             fi
2835         ;;
2836         --list-*)
2837             NAME="${opt#--list-}"
2838             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2839             NAME=${NAME%s}
2840             eval show_list $NAME \$$(toupper $NAME)_LIST
2841         ;;
2842         --help|-h) show_help
2843         ;;
2844         --quiet|-q) quiet=yes
2845         ;;
2846         *)
2847             optname="${opt%%=*}"
2848             optname="${optname#--}"
2849             optname=$(echo "$optname" | sed 's/-/_/g')
2850             if is_in $optname $CMDLINE_SET; then
2851                 eval $optname='$optval'
2852             elif is_in $optname $CMDLINE_APPEND; then
2853                 append $optname "$optval"
2854             else
2855                 die_unknown $opt
2856             fi
2857         ;;
2858     esac
2859 done
2860
2861 for e in $env; do
2862     eval "export $e"
2863 done
2864
2865 disabled logging && logfile=/dev/null
2866
2867 # Die early if licensing-related configure options are incompatible.
2868 die_license_disabled() {
2869     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2870 }
2871
2872 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2873 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2874 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2875
2876 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2877
2878 # Disable all the library-specific components if the library itself
2879 # is disabled, see AVCODEC_LIST and following _LIST variables.
2880
2881 disable_components(){
2882     disabled ${1} && disable $(
2883         eval components="\$$(toupper ${1})_COMPONENTS"
2884         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2885     )
2886 }
2887
2888 map 'disable_components $v' $LIBRARY_LIST
2889
2890 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2891 set >> $logfile
2892
2893 case "$toolchain" in
2894     *-asan)
2895         cc_default="${toolchain%-asan}"
2896         add_cflags  -fsanitize=address
2897         add_ldflags -fsanitize=address
2898     ;;
2899     *-msan)
2900         cc_default="${toolchain%-msan}"
2901         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2902         add_ldflags -fsanitize=memory
2903     ;;
2904     *-tsan)
2905         cc_default="${toolchain%-tsan}"
2906         add_cflags  -fsanitize=thread -fPIE
2907         add_ldflags -fsanitize=thread -pie
2908         case "$toolchain" in
2909             gcc-tsan)
2910                 add_cflags  -fPIC
2911                 add_ldflags -fPIC
2912                 ;;
2913         esac
2914     ;;
2915     *-usan)
2916         cc_default="${toolchain%-usan}"
2917         add_cflags  -fsanitize=undefined
2918         add_ldflags -fsanitize=undefined
2919         case "$toolchain" in
2920             clang-usan)
2921                 add_cflags -O1
2922                 ;;
2923         esac
2924     ;;
2925     valgrind-*)
2926         target_exec_default="valgrind"
2927         case "$toolchain" in
2928             valgrind-massif)
2929                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2930                 ;;
2931             valgrind-memcheck)
2932                 target_exec_args="--track-origins=yes --leak-check=full"
2933                 ;;
2934         esac
2935     ;;
2936     msvc)
2937         # Check whether the current MSVC version needs the C99 converter.
2938         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2939         # support enough of C99 to build libav. Default to the new
2940         # behaviour if the regexp was unable to match anything, since this
2941         # successfully parses the version number of existing supported
2942         # versions that require the converter (MSVC 2010 and 2012).
2943         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2944         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2945             cc_default="cl"
2946         else
2947             cc_default="c99wrap cl"
2948         fi
2949         ld_default="$source_path/compat/windows/mslink"
2950         nm_default="dumpbin -symbols"
2951         ar_default="lib"
2952         case "$arch" in
2953         arm*)
2954             as_default="armasm"
2955             ;;
2956         esac
2957         target_os_default="win32"
2958         # Use a relative path for TMPDIR. This makes sure all the
2959         # ffconf temp files are written with a relative path, avoiding
2960         # issues with msys/win32 path conversion for MSVC parameters
2961         # such as -Fo<file> or -out:<file>.
2962         TMPDIR=.
2963     ;;
2964     icl)
2965         cc_default="icl"
2966         ld_default="xilink"
2967         nm_default="dumpbin -symbols"
2968         ar_default="xilib"
2969         target_os_default="win32"
2970         TMPDIR=.
2971     ;;
2972     gcov)
2973         add_cflags  -fprofile-arcs -ftest-coverage
2974         add_ldflags -fprofile-arcs -ftest-coverage
2975     ;;
2976     llvm-cov)
2977         add_cflags -fprofile-arcs -ftest-coverage
2978         add_ldflags --coverage
2979     ;;
2980     hardened)
2981         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2982         add_cflags   -fno-strict-overflow -fstack-protector-all
2983         add_ldflags  -Wl,-z,relro -Wl,-z,now
2984     ;;
2985     ?*)
2986         die "Unknown toolchain $toolchain"
2987     ;;
2988 esac
2989
2990 test -n "$cross_prefix" && enable cross_compile
2991
2992 if enabled cross_compile; then
2993     test -n "$arch" && test -n "$target_os" ||
2994         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2995 fi
2996
2997 ar_default="${cross_prefix}${ar_default}"
2998 cc_default="${cross_prefix}${cc_default}"
2999 objcc_default="${cross_prefix}${objcc_default}"
3000 nm_default="${cross_prefix}${nm_default}"
3001 pkg_config_default="${cross_prefix}${pkg_config_default}"
3002 ranlib="${cross_prefix}${ranlib}"
3003 strip="${cross_prefix}${strip}"
3004
3005 sysinclude_default="${sysroot}/usr/include"
3006
3007 set_default arch cc pkg_config sysinclude target_exec target_os
3008 enabled cross_compile || host_cc_default=$cc
3009 set_default host_cc
3010
3011 if ! $pkg_config --version >/dev/null 2>&1; then
3012     warn "$pkg_config not found, library detection may fail."
3013     pkg_config=false
3014 fi
3015
3016 exesuf() {
3017     case $1 in
3018         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3019     esac
3020 }
3021
3022 EXESUF=$(exesuf $target_os)
3023 HOSTEXESUF=$(exesuf $host_os)
3024
3025 # set temporary file name
3026 : ${TMPDIR:=$TEMPDIR}
3027 : ${TMPDIR:=$TMP}
3028 : ${TMPDIR:=/tmp}
3029
3030 if ! check_cmd mktemp -u XXXXXX; then
3031     # simple replacement for missing mktemp
3032     # NOT SAFE FOR GENERAL USE
3033     mktemp(){
3034         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3035         echo "$tmpname"
3036         mkdir "$tmpname"
3037     }
3038 fi
3039
3040 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3041     die "Unable to create temporary directory in $TMPDIR."
3042
3043 tmpfile(){
3044     tmp="${AVTMPDIR}/test"$2
3045     (set -C; exec > $tmp) 2> /dev/null ||
3046         die "Unable to create temporary file in $AVTMPDIR."
3047     eval $1=$tmp
3048 }
3049
3050 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3051 trap 'exit 2' INT
3052
3053 tmpfile TMPASM .asm
3054 tmpfile TMPC   .c
3055 tmpfile TMPE   $EXESUF
3056 tmpfile TMPH   .h
3057 tmpfile TMPO   .o
3058 tmpfile TMPS   .S
3059 tmpfile TMPSH  .sh
3060 tmpfile TMPV   .ver
3061
3062 unset -f mktemp
3063
3064 chmod +x $TMPE
3065
3066 # make sure we can execute files in $TMPDIR
3067 cat > $TMPSH 2>> $logfile <<EOF
3068 #! /bin/sh
3069 EOF
3070 chmod +x $TMPSH >> $logfile 2>&1
3071 if ! $TMPSH >> $logfile 2>&1; then
3072     cat <<EOF
3073 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3074 variable to another directory and make sure that it is not mounted noexec.
3075 EOF
3076     die "Sanity test failed."
3077 fi
3078
3079 armasm_flags(){
3080     for flag; do
3081         case $flag in
3082             # Filter out MSVC cl.exe options from cflags that shouldn't
3083             # be passed to gas-preprocessor
3084             -M[TD]*)                                            ;;
3085             *)                  echo $flag                      ;;
3086         esac
3087    done
3088 }
3089
3090 ccc_flags(){
3091     for flag; do
3092         case $flag in
3093             -std=c99)           echo -c99                       ;;
3094             -mcpu=*)            echo -arch ${flag#*=}           ;;
3095             -mieee)             echo -ieee                      ;;
3096             -O*|-fast)          echo $flag                      ;;
3097             -fno-math-errno)    echo -assume nomath_errno       ;;
3098             -g)                 echo -g3                        ;;
3099             -Wall)              echo -msg_enable level2         ;;
3100             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3101             -Wl,*)              echo $flag                      ;;
3102             -f*|-W*)                                            ;;
3103             *)                  echo $flag                      ;;
3104         esac
3105    done
3106 }
3107
3108 cparser_flags(){
3109     for flag; do
3110         case $flag in
3111             -Wno-switch)             echo -Wno-switch-enum ;;
3112             -Wno-format-zero-length) ;;
3113             -Wdisabled-optimization) ;;
3114             -Wno-pointer-sign)       echo -Wno-other ;;
3115             *)                       echo $flag ;;
3116         esac
3117     done
3118 }
3119
3120 msvc_common_flags(){
3121     for flag; do
3122         case $flag in
3123             # In addition to specifying certain flags under the compiler
3124             # specific filters, they must be specified here as well or else the
3125             # generic catch all at the bottom will print the original flag.
3126             -Wall)                ;;
3127             -Wextra)              ;;
3128             -std=c99)             ;;
3129             # Common flags
3130             -fomit-frame-pointer) ;;
3131             -g)                   echo -Z7 ;;
3132             -fno-math-errno)      ;;
3133             -fno-common)          ;;
3134             -fno-signed-zeros)    ;;
3135             -fPIC)                ;;
3136             -mthumb)              ;;
3137             -march=*)             ;;
3138             -lz)                  echo zlib.lib ;;
3139             -lx264)               echo libx264.lib ;;
3140             -l*)                  echo ${flag#-l}.lib ;;
3141             -L*)                  echo -libpath:${flag#-L} ;;
3142             *)                    echo $flag ;;
3143         esac
3144     done
3145 }
3146
3147 msvc_flags(){
3148     msvc_common_flags "$@"
3149     for flag; do
3150         case $flag in
3151             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3152                                        -wd4554 ;;
3153             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3154                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3155                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3156                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3157         esac
3158     done
3159 }
3160
3161 icl_flags(){
3162     msvc_common_flags "$@"
3163     for flag; do
3164         case $flag in
3165             # Despite what Intel's documentation says -Wall, which is supported
3166             # on Windows, does enable remarks so disable them here.
3167             -Wall)                echo $flag -Qdiag-disable:remark ;;
3168             -std=c99)             echo -Qstd=c99 ;;
3169         esac
3170     done
3171 }
3172
3173 pgi_flags(){
3174     for flag; do
3175         case $flag in
3176             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3177             -fomit-frame-pointer) echo -Mnoframe ;;
3178             -g)                   echo -gopt ;;
3179             *)                    echo $flag ;;
3180         esac
3181     done
3182 }
3183
3184 suncc_flags(){
3185     for flag; do
3186         case $flag in
3187             -march=*|-mcpu=*)
3188                 case "${flag#*=}" in
3189                     native)                   echo -xtarget=native       ;;
3190                     v9|niagara)               echo -xarch=sparc          ;;
3191                     ultrasparc)               echo -xarch=sparcvis       ;;
3192                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3193                     i586|pentium)             echo -xchip=pentium        ;;
3194                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3195                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3196                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3197                     pentium4*)          echo -xtarget=pentium4           ;;
3198                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3199                     *-sse3)             echo -xarch=sse3                 ;;
3200                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3201                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3202                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3203                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3204                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3205                     k8|opteron|athlon64|athlon-fx)
3206                                                echo -xarch=sse2a         ;;
3207                     athlon*)                   echo -xarch=pentium_proa  ;;
3208                 esac
3209                 ;;
3210             -std=c99)             echo -xc99              ;;
3211             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3212             -fPIC)                echo -KPIC -xcode=pic32 ;;
3213             -W*,*)                echo $flag              ;;
3214             -f*-*|-W*|-mimpure-text)                      ;;
3215             -shared)              echo -G                 ;;
3216             *)                    echo $flag              ;;
3217         esac
3218     done
3219 }
3220
3221 tms470_flags(){
3222     for flag; do
3223         case $flag in
3224             -march=*|-mcpu=*)
3225                 case "${flag#*=}" in
3226                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3227                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3228                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3229                     armv6*|arm11*)          echo -mv=6   ;;
3230                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3231                                             echo -mv=5e  ;;
3232                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3233                 esac
3234                 ;;
3235             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3236             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3237             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3238             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3239             -msoft-float)   echo --float_support=vfplib       ;;
3240             -O[0-3]|-mf=*)  echo $flag                        ;;
3241             -g)             echo -g -mn                       ;;
3242             -pds=*)         echo $flag                        ;;
3243             -D*|-I*)        echo $flag                        ;;
3244             --gcc|--abi=*)  echo $flag                        ;;
3245             -me)            echo $flag                        ;;
3246         esac
3247     done
3248 }
3249
3250 probe_cc(){
3251     pfx=$1
3252     _cc=$2
3253
3254     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3255     unset _ld_o _ldflags _ld_lib _ld_path
3256     unset _depflags _DEPCMD _DEPFLAGS
3257     _flags_filter=echo
3258
3259     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3260         _type=llvm_gcc
3261         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3262         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3263         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3264         _cflags_speed='-O3'
3265         _cflags_size='-Os'
3266     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3267         _type=gcc
3268         gcc_version=$($_cc --version | head -n1)
3269         gcc_basever=$($_cc -dumpversion)
3270         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3271         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3272         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3273         if ! $_cc -dumpversion | grep -q '^2\.'; then
3274             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3275         fi
3276         _cflags_speed='-O3'
3277         _cflags_size='-Os'
3278     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3279         _type=icc
3280         _ident=$($_cc --version | head -n1)
3281         _depflags='-MMD'
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284         _cflags_noopt='-O1'
3285     elif $_cc -v 2>&1 | grep -q xlc; then
3286         _type=xlc
3287         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3288         _cflags_speed='-O5'
3289         _cflags_size='-O5 -qcompact'
3290     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3291         _type=ccc
3292         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3293         _DEPFLAGS='-M'
3294         _cflags_speed='-fast'
3295         _cflags_size='-O1'
3296         _flags_filter=ccc_flags
3297     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3298         test -d "$sysroot" || die "No valid sysroot specified."
3299         _type=armcc
3300         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3301         armcc_conf="$PWD/armcc.conf"
3302         $_cc --arm_linux_configure                 \
3303              --arm_linux_config_file="$armcc_conf" \
3304              --configure_sysroot="$sysroot"        \
3305              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3306              die "Error creating armcc configuration file."
3307         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3308         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3309         as_default="${cross_prefix}gcc"
3310         _depflags='-MMD'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3314         _type=tms470
3315         _ident=$($_cc -version | head -n1 | tr -s ' ')
3316         _flags='--gcc --abi=eabi -me'
3317         _cc_e='-ppl -fe=$@'
3318         _cc_o='-fe=$@'
3319         _depflags='-ppa -ppd=$(@:.o=.d)'
3320         _cflags_speed='-O3 -mf=5'
3321         _cflags_size='-O3 -mf=2'
3322         _flags_filter=tms470_flags
3323     elif $_cc -v 2>&1 | grep -q clang; then
3324         _type=clang
3325         _ident=$($_cc --version 2>/dev/null | head -n1)
3326         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3327         _cflags_speed='-O3'
3328         _cflags_size='-Os'
3329     elif $_cc -V 2>&1 | grep -q Sun; then
3330         _type=suncc
3331         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3332         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3333         _DEPFLAGS='-xM1 -xc99'
3334         _ldflags='-std=c99'
3335         _cflags_speed='-O5'
3336         _cflags_size='-O5 -xspace'
3337         _flags_filter=suncc_flags
3338     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3339         _type=pathscale
3340         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3341         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3342         _cflags_speed='-O2'
3343         _cflags_size='-Os'
3344         _flags_filter='filter_out -Wdisabled-optimization'
3345     elif $_cc -v 2>&1 | grep -q Open64; then
3346         _type=open64
3347         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3348         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3349         _cflags_speed='-O2'
3350         _cflags_size='-Os'
3351         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3352     elif $_cc -V 2>&1 | grep -q Portland; then
3353         _type=pgi
3354         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3355         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3356         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3357         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3358         _cflags_noopt="-O1"
3359         _flags_filter=pgi_flags
3360     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3361         _type=armasm
3362         _ident=$($_cc | head -n1)
3363         # 4509: "This form of conditional instruction is deprecated"
3364         _flags="-nologo -ignore 4509"
3365         _flags_filter=armasm_flags
3366     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3367         _type=msvc
3368         _ident=$($_cc 2>&1 | head -n1)
3369         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3370         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3371         _cflags_speed="-O2"
3372         _cflags_size="-O1"
3373         _cflags_noopt="-O1"
3374         if $_cc -nologo- 2>&1 | grep -q Linker; then
3375             _ld_o='-out:$@'
3376         else
3377             _ld_o='-Fe$@'
3378         fi
3379         _cc_o='-Fo$@'
3380         _cc_e='-P -Fi$@'
3381         _flags_filter=msvc_flags
3382         _ld_lib='lib%.a'
3383         _ld_path='-libpath:'
3384         _flags='-nologo'
3385     elif $_cc 2>&1 | grep -q Intel; then
3386         _type=icl
3387         _ident=$($_cc 2>&1 | head -n1)
3388         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3389         # Not only is O3 broken on 13.x+ but it is slower on all previous
3390         # versions (tested) as well.
3391         _cflags_speed="-O2"
3392         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3393         if $_cc 2>&1 | grep -q Linker; then
3394             _ld_o='-out:$@'
3395         else
3396             _ld_o='-Fe$@'
3397         fi
3398         _cc_o='-Fo$@'
3399         _cc_e='-P'
3400         _flags_filter=icl_flags
3401         _ld_lib='lib%.a'
3402         _ld_path='-libpath:'
3403         # -Qdiag-error to make icl error when seeing certain unknown arguments
3404         _flags='-nologo -Qdiag-error:4044,10157'
3405         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3406         # with MSVC which enables it by default.
3407         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3408     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3409         # lld can emulate multiple different linkers; in ms link.exe mode,
3410         # the -? parameter gives the help output which contains an identifyable
3411         # string, while it gives an error in other modes.
3412         _type=lld-link
3413         # The link.exe mode doesn't have a switch for getting the version,
3414         # but we can force it back to gnu mode and get the version from there.
3415         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3416         _ld_o='-out:$@'
3417         _flags_filter=msvc_flags
3418         _ld_lib='lib%.a'
3419         _ld_path='-libpath:'
3420     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3421         _type=cparser
3422         _ident=$($_cc --version | head -n1)
3423         _depflags='-MMD'
3424         _cflags_speed='-O4'
3425         _cflags_size='-O2'
3426         _flags_filter=cparser_flags
3427     fi
3428
3429     eval ${pfx}_type=\$_type
3430     eval ${pfx}_ident=\$_ident
3431 }
3432
3433 set_ccvars(){
3434     eval ${1}_C=\${_cc_c-\${${1}_C}}
3435     eval ${1}_E=\${_cc_e-\${${1}_E}}
3436     eval ${1}_O=\${_cc_o-\${${1}_O}}
3437
3438     if [ -n "$_depflags" ]; then
3439         eval ${1}_DEPFLAGS=\$_depflags
3440     else
3441         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3442         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3443         eval DEP${1}FLAGS=\$_flags
3444     fi
3445 }
3446
3447 probe_cc cc "$cc"
3448 cflags_filter=$_flags_filter
3449 cflags_speed=$_cflags_speed
3450 cflags_size=$_cflags_size
3451 cflags_noopt=$_cflags_noopt
3452 add_cflags $_flags $_cflags
3453 cc_ldflags=$_ldflags
3454 set_ccvars CC
3455
3456 probe_cc hostcc "$host_cc"
3457 host_cflags_filter=$_flags_filter
3458 host_cflags_speed=$_cflags_speed
3459 add_host_cflags  $_flags $_cflags
3460 set_ccvars HOSTCC
3461
3462 test -n "$cc_type" && enable $cc_type ||
3463     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3464
3465 : ${as_default:=$cc}
3466 : ${objcc_default:=$cc}
3467 : ${dep_cc_default:=$cc}
3468 : ${ld_default:=$cc}
3469 : ${host_ld_default:=$host_cc}
3470 set_default ar as objcc dep_cc ld host_ld
3471
3472 probe_cc as "$as"
3473 asflags_filter=$_flags_filter
3474 add_asflags $_flags $_cflags
3475 set_ccvars AS
3476
3477 probe_cc objcc "$objcc"
3478 objcflags_filter=$_flags_filter
3479 add_objcflags $_flags $_cflags
3480 set_ccvars OBJC
3481
3482 probe_cc ld "$ld"
3483 ldflags_filter=$_flags_filter
3484 add_ldflags $_flags $_ldflags
3485 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3486 LD_O=${_ld_o-$LD_O}
3487 LD_LIB=${_ld_lib-$LD_LIB}
3488 LD_PATH=${_ld_path-$LD_PATH}
3489
3490 probe_cc hostld "$host_ld"
3491 host_ldflags_filter=$_flags_filter
3492 add_host_ldflags $_flags $_ldflags
3493 HOSTLD_O=${_ld_o-$HOSTLD_O}
3494
3495 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3496     probe_cc depcc "$dep_cc"
3497     CCDEP=${_DEPCMD:-$DEPCMD}
3498     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3499     DEPCCFLAGS=$_flags
3500 fi
3501
3502 if $ar 2>&1 | grep -q Microsoft; then
3503     arflags="-nologo"
3504     ar_o='-out:$@'
3505 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3506     arflags="rq"
3507     ar_o='$@'
3508 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3509     arflags='-Xany -r -c'
3510     ar_o='$@'
3511 else
3512     arflags="rc"
3513     ar_o='$@'
3514 fi
3515
3516 add_cflags $extra_cflags
3517 add_objcflags $extra_objcflags
3518 add_asflags $extra_cflags
3519
3520 if test -n "$sysroot"; then
3521     case "$cc_type" in
3522         gcc|llvm_gcc|clang)
3523             add_cppflags --sysroot="$sysroot"
3524             add_ldflags --sysroot="$sysroot"
3525         ;;
3526         tms470)
3527             add_cppflags -I"$sysinclude"
3528             add_ldflags  --sysroot="$sysroot"
3529         ;;
3530     esac
3531 fi
3532
3533 if test "$cpu" = host; then
3534     enabled cross_compile &&
3535         die "--cpu=host makes no sense when cross-compiling."
3536
3537     case "$cc_type" in
3538         gcc|llvm_gcc)
3539             check_native(){
3540                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3541                 sed -n "/cc1.*$1=/{
3542                             s/.*$1=\\([^ ]*\\).*/\\1/
3543                             p
3544                             q
3545                         }" $TMPE
3546             }
3547             cpu=$(check_native -march || check_native -mcpu)
3548         ;;
3549     esac
3550
3551     test "${cpu:-host}" = host &&
3552         die "--cpu=host not supported with compiler $cc"
3553 fi
3554
3555 # Deal with common $arch aliases
3556 case "$arch" in
3557     aarch64|arm64)
3558         arch="aarch64"
3559     ;;
3560     arm*)
3561         arch="arm"
3562     ;;
3563     mips*|IP*)
3564         case "$arch" in
3565         *el)
3566             add_cppflags -EL
3567             add_ldflags -EL
3568         ;;
3569         *eb)
3570             add_cppflags -EB
3571             add_ldflags -EB
3572         ;;
3573         esac
3574         arch="mips"
3575     ;;
3576     parisc*|hppa*)
3577         arch="parisc"
3578     ;;
3579     "Power Macintosh"|ppc*|powerpc*)
3580         arch="ppc"
3581     ;;
3582     s390|s390x)
3583         arch="s390"
3584     ;;
3585     sh4|sh)
3586         arch="sh4"
3587     ;;
3588     sun4u|sparc*)
3589         arch="sparc"
3590     ;;
3591     tilegx|tile-gx)
3592         arch="tilegx"
3593     ;;
3594     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3595         arch="x86"
3596     ;;
3597 esac
3598
3599 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3600 enable $arch
3601
3602 # Add processor-specific flags
3603 if enabled aarch64; then
3604
3605     case $cpu in
3606         armv*)
3607             cpuflags="-march=$cpu"
3608         ;;
3609         *)
3610             cpuflags="-mcpu=$cpu"
3611         ;;
3612     esac
3613
3614 elif enabled alpha; then
3615
3616     cpuflags="-mcpu=$cpu"
3617
3618 elif enabled arm; then
3619
3620     check_arm_arch() {
3621         check_cpp_condition stddef.h \
3622             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3623             $cpuflags
3624     }
3625
3626     probe_arm_arch() {
3627         if   check_arm_arch 4;        then echo armv4
3628         elif check_arm_arch 4T;       then echo armv4t
3629         elif check_arm_arch 5;        then echo armv5
3630         elif check_arm_arch 5E;       then echo armv5e
3631         elif check_arm_arch 5T;       then echo armv5t
3632         elif check_arm_arch 5TE;      then echo armv5te
3633         elif check_arm_arch 5TEJ;     then echo armv5te
3634         elif check_arm_arch 6;        then echo armv6
3635         elif check_arm_arch 6J;       then echo armv6j
3636         elif check_arm_arch 6K;       then echo armv6k
3637         elif check_arm_arch 6Z;       then echo armv6z
3638         elif check_arm_arch 6ZK;      then echo armv6zk
3639         elif check_arm_arch 6T2;      then echo armv6t2
3640         elif check_arm_arch 7;        then echo armv7
3641         elif check_arm_arch 7A  7_A;  then echo armv7-a
3642         elif check_arm_arch 7S;       then echo armv7-a
3643         elif check_arm_arch 7R  7_R;  then echo armv7-r
3644         elif check_arm_arch 7M  7_M;  then echo armv7-m
3645         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3646         elif check_arm_arch 8A  8_A;  then echo armv8-a
3647         fi
3648     }
3649
3650     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3651
3652     case $cpu in
3653         armv*)
3654             cpuflags="-march=$cpu"
3655             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3656         ;;
3657         *)
3658             cpuflags="-mcpu=$cpu"
3659             case $cpu in
3660                 cortex-a*)                               subarch=armv7a  ;;
3661                 cortex-r*)                               subarch=armv7r  ;;
3662                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3663                 arm11*)                                  subarch=armv6   ;;
3664                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3665                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3666                 *)                             subarch=$(probe_arm_arch) ;;
3667             esac
3668         ;;
3669     esac
3670
3671     case "$subarch" in
3672         armv5t*)    enable fast_clz                ;;
3673         armv[6-8]*) enable fast_clz fast_unaligned ;;
3674     esac
3675
3676 elif enabled avr32; then
3677
3678     case $cpu in
3679         ap7[02]0[0-2])
3680             subarch="avr32_ap"
3681             cpuflags="-mpart=$cpu"
3682         ;;
3683         ap)
3684             subarch="avr32_ap"
3685             cpuflags="-march=$cpu"
3686         ;;
3687         uc3[ab]*)
3688             subarch="avr32_uc"
3689             cpuflags="-mcpu=$cpu"
3690         ;;
3691         uc)
3692             subarch="avr32_uc"
3693             cpuflags="-march=$cpu"
3694         ;;
3695     esac
3696
3697 elif enabled bfin; then
3698
3699     cpuflags="-mcpu=$cpu"
3700
3701 elif enabled mips; then
3702
3703     cpuflags="-march=$cpu"
3704
3705 elif enabled ppc; then
3706
3707     disable ldbrx
3708
3709     case $(tolower $cpu) in
3710         601|ppc601|powerpc601)
3711             cpuflags="-mcpu=601"
3712             disable altivec
3713         ;;
3714         603*|ppc603*|powerpc603*)
3715             cpuflags="-mcpu=603"
3716             disable altivec
3717         ;;
3718         604*|ppc604*|powerpc604*)
3719             cpuflags="-mcpu=604"
3720             disable altivec
3721         ;;
3722         g3|75*|ppc75*|powerpc75*)
3723             cpuflags="-mcpu=750"
3724             disable altivec
3725         ;;
3726         g4|745*|ppc745*|powerpc745*)
3727             cpuflags="-mcpu=7450"
3728             disable vsx
3729         ;;
3730         74*|ppc74*|powerpc74*)
3731             cpuflags="-mcpu=7400"
3732             disable vsx
3733         ;;
3734         g5|970|ppc970|powerpc970)
3735             cpuflags="-mcpu=970"
3736             disable vsx
3737         ;;
3738         power[3-6]*)
3739             cpuflags="-mcpu=$cpu"
3740             disable vsx
3741         ;;
3742         power[7-8]*)
3743             cpuflags="-mcpu=$cpu"
3744             enable ldbrx
3745         ;;
3746         cell)
3747             cpuflags="-mcpu=cell"
3748             enable ldbrx
3749             disable vsx
3750         ;;
3751         e500mc)
3752             cpuflags="-mcpu=e500mc"
3753             disable altivec
3754         ;;
3755         e500v2)
3756             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3757             disable altivec
3758             disable dcbzl
3759         ;;
3760         e500)
3761             cpuflags="-mcpu=8540 -mhard-float"
3762             disable altivec
3763             disable dcbzl
3764         ;;
3765     esac
3766
3767 elif enabled sparc; then
3768
3769     case $cpu in
3770         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3771             cpuflags="-mcpu=$cpu"
3772         ;;
3773         ultrasparc*|niagara[234])
3774             cpuflags="-mcpu=$cpu"
3775         ;;
3776     esac
3777
3778 elif enabled x86; then
3779
3780     case $cpu in
3781         i[345]86|pentium)
3782             cpuflags="-march=$cpu"
3783             disable i686
3784             disable mmx
3785         ;;
3786         # targets that do NOT support nopl and conditional mov (cmov)
3787         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3788             cpuflags="-march=$cpu"
3789             disable i686
3790         ;;
3791         # targets that do support nopl and conditional mov (cmov)
3792         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3793             cpuflags="-march=$cpu"
3794             enable i686
3795             enable fast_cmov
3796         ;;
3797         # targets that do support conditional mov but on which it's slow
3798         pentium4|pentium4m|prescott|nocona)
3799             cpuflags="-march=$cpu"
3800             enable i686
3801             disable fast_cmov
3802         ;;
3803     esac
3804
3805 fi
3806
3807 if [ "$cpu" != generic ]; then
3808     add_cflags  $cpuflags
3809     add_asflags $cpuflags
3810     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3811 fi
3812
3813 # compiler sanity check
3814 check_exec <<EOF
3815 int main(void){ return 0; }
3816 EOF
3817 if test "$?" != 0; then
3818     echo "$cc is unable to create an executable file."
3819     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3820         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3821         echo "Only do this if you know what cross compiling means."
3822     fi
3823     die "C compiler test failed."
3824 fi
3825
3826 add_cppflags -D_ISOC99_SOURCE
3827
3828 # some compilers silently accept -std=c11, so we also need to check that the
3829 # version macro is defined properly
3830 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3831     add_cflags -std=c11 ||
3832     check_cflags -std=c99
3833
3834 check_cppflags -D_FILE_OFFSET_BITS=64
3835 check_cppflags -D_LARGEFILE_SOURCE
3836
3837 add_host_cppflags -D_ISOC99_SOURCE
3838 check_host_cflags -std=c99
3839 check_host_cflags -Wall
3840 check_host_cflags $host_cflags_speed
3841
3842 check_64bit(){
3843     arch32=$1
3844     arch64=$2
3845     expr=$3
3846     check_code cc "" "int test[2*($expr) - 1]" &&
3847         subarch=$arch64 || subarch=$arch32
3848 }
3849
3850 case "$arch" in
3851     aarch64|alpha|ia64)
3852         spic=$shared
3853     ;;
3854     mips)
3855         check_64bit mips mips64 '_MIPS_SIM > 1'
3856         spic=$shared
3857     ;;
3858     parisc)
3859         check_64bit parisc parisc64 'sizeof(void *) > 4'
3860         spic=$shared
3861     ;;
3862     ppc)
3863         check_64bit ppc ppc64 'sizeof(void *) > 4'
3864         spic=$shared
3865     ;;
3866     s390)
3867         check_64bit s390 s390x 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     sparc)
3871         check_64bit sparc sparc64 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     x86)
3875         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3876         if test "$subarch" = "x86_64"; then
3877             spic=$shared
3878         fi
3879     ;;
3880 esac
3881
3882 enable $subarch
3883 enabled spic && enable_weak pic
3884
3885 enabled x86_64 && objformat=elf64 || objformat="elf32"
3886
3887 # OS specific
3888 case $target_os in
3889     aix)
3890         SHFLAGS=-shared
3891         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3892         enabled shared && add_ldflags -Wl,-brtl
3893         ;;
3894     android)
3895         disable symver
3896         enable section_data_rel_ro
3897         SLIB_INSTALL_NAME='$(SLIBNAME)'
3898         SLIB_INSTALL_LINKS=
3899         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3900         ;;
3901     haiku)
3902         prefix_default="/boot/common"
3903         network_extralibs="-lnetwork"
3904         host_extralibs=
3905         ;;
3906     sunos)
3907         SHFLAGS='-shared -Wl,-h,$$(@F)'
3908         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3909         network_extralibs="-lsocket -lnsl"
3910         # When using suncc to build, the Solaris linker will mark
3911         # an executable with each instruction set encountered by
3912         # the Solaris assembler.  As our libraries contain their own
3913         # guards for processor-specific code, instead suppress
3914         # generation of the HWCAPS ELF section on Solaris x86 only.
3915         enabled_all suncc x86 &&
3916             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3917             add_ldflags -Wl,-M,mapfile
3918         nm_default='nm -P -g'
3919         version_script='-M'
3920         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3921         ;;
3922     netbsd)
3923         disable symver
3924         oss_indev_extralibs="-lossaudio"
3925         oss_outdev_extralibs="-lossaudio"
3926         ;;
3927     openbsd|bitrig)
3928         disable symver
3929         SHFLAGS='-shared'
3930         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3931         SLIB_INSTALL_LINKS=
3932         oss_indev_extralibs="-lossaudio"
3933         oss_outdev_extralibs="-lossaudio"
3934         ;;
3935     dragonfly)
3936         disable symver
3937         ;;
3938     freebsd)
3939         ;;
3940     bsd/os)
3941         add_extralibs -lpoll -lgnugetopt
3942         ;;
3943     darwin)
3944         enabled ppc && add_asflags -force_cpusubtype_ALL
3945         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3946         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3947         add_ldflags -Wl,-dynamic,-search_paths_first
3948         SLIBSUF=".dylib"
3949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3951         enabled x86_64 && objformat="macho64" || objformat="macho32"
3952         enabled_any pic shared ||
3953             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3954         check_header dispatch/dispatch.h &&
3955             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3956         ;;
3957     msys*)
3958         die "Native MSYS builds are discouraged, please use the MINGW environment."
3959         ;;
3960     mingw32*|mingw64*)
3961         if test $target_os = "mingw32ce"; then
3962             disable network
3963         else
3964             target_os=mingw32
3965         fi
3966         LIBTARGET=i386
3967         if enabled x86_64; then
3968             LIBTARGET="i386:x86-64"
3969         elif enabled arm; then
3970             LIBTARGET=arm-wince
3971         fi
3972         check_ldflags -Wl,--nxcompat
3973         check_ldflags -Wl,--dynamicbase
3974         shlibdir_default="$bindir_default"
3975         SLIBPREF=""
3976         SLIBSUF=".dll"
3977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3979         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3980         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3981         SLIB_INSTALL_LINKS=
3982         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3983         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3984         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3985         enabled x86_64 && objformat="win64" || objformat="win32"
3986         dlltool="${cross_prefix}dlltool"
3987         ranlib=:
3988         enable dos_paths
3989         ;;
3990     win32|win64)
3991         disable symver
3992         if enabled shared; then
3993             # Link to the import library instead of the normal static library
3994             # for shared libs.
3995             LD_LIB='%.lib'
3996             # Cannot build both shared and static libs with MSVC or icl.
3997             disable static
3998         fi
3999         shlibdir_default="$bindir_default"
4000         SLIBPREF=""
4001         SLIBSUF=".dll"
4002         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4003         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4004         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4005         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4006         SLIB_INSTALL_LINKS=
4007         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4008         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4009         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4010         enabled x86_64 && objformat="win64" || objformat="win32"
4011         ranlib=:
4012         enable dos_paths
4013         ;;
4014     cygwin*)
4015         target_os=cygwin
4016         shlibdir_default="$bindir_default"
4017         SLIBPREF="cyg"
4018         SLIBSUF=".dll"
4019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4021         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4022         SLIB_INSTALL_LINKS=
4023         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4024         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4025         enabled x86_64 && objformat="win64" || objformat="win32"
4026         enable dos_paths
4027         ;;
4028     *-dos|freedos|opendos)
4029         network_extralibs="-lsocket"
4030         objformat="coff"
4031         enable dos_paths
4032         add_cppflags -U__STRICT_ANSI__
4033         ;;
4034     linux)
4035         enable dv1394
4036         enable section_data_rel_ro
4037         ;;
4038     irix*)
4039         target_os=irix
4040         ranlib="echo ignoring ranlib"
4041         ;;
4042     os/2*)
4043         ln_s="cp -f"
4044         objformat="aout"
4045         add_cppflags -D_GNU_SOURCE
4046         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4047         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4048         LIBSUF="_s.a"
4049         SLIBPREF=""
4050         SLIBSUF=".dll"
4051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4053         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4054             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4055             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4056             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4057             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4058         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4059             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4060         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4061         enable dos_paths
4062         ;;
4063     gnu/kfreebsd)
4064         add_cppflags -D_BSD_SOURCE
4065         ;;
4066     gnu)
4067         ;;
4068     qnx)
4069         add_cppflags -D_QNX_SOURCE
4070         network_extralibs="-lsocket"
4071         ;;
4072     symbian)
4073         SLIBSUF=".dll"
4074         enable dos_paths
4075         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4076         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4077         add_ldflags -Wl,--target1-abs,--no-undefined \
4078                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4079                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4080         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4081                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4082                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4083         ;;
4084     osf1)
4085         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4086         ;;
4087     minix)
4088         ;;
4089     none)
4090         ;;
4091     *)
4092         die "Unknown OS '$target_os'."
4093         ;;
4094 esac
4095
4096 # determine libc flavour
4097
4098 probe_libc(){
4099     pfx=$1
4100     pfx_no_=${pfx%_}
4101     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4102     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4103         eval ${pfx}libc_type=uclibc
4104         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4105     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4106         eval ${pfx}libc_type=glibc
4107         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4108     # MinGW headers can be installed on Cygwin, so check for newlib first.
4109     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4110         eval ${pfx}libc_type=newlib
4111         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4112     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4113     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4114         eval ${pfx}libc_type=mingw64
4115         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4116         eval test \$${pfx_no_}cc_type = "gcc" &&
4117             add_${pfx}cppflags -D__printf__=__gnu_printf__
4118     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4119          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4120         eval ${pfx}libc_type=mingw32
4121         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4122             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4123             die "ERROR: MinGW32 runtime version must be >= 3.15."
4124         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4125         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4126             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4127         eval test \$${pfx_no_}cc_type = "gcc" &&
4128             add_${pfx}cppflags -D__printf__=__gnu_printf__
4129     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4130         eval ${pfx}libc_type=msvcrt
4131         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4132             if [ "$pfx" = host_ ]; then
4133                 add_host_cppflags -Dsnprintf=_snprintf
4134             else
4135                 add_compat strtod.o strtod=avpriv_strtod
4136                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4137                                              _snprintf=avpriv_snprintf  \
4138                                              vsnprintf=avpriv_vsnprintf
4139             fi
4140         fi
4141         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4142         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4143         # 0x601 by default unless something else is set by the user.
4144         # This can easily lead to us detecting functions only present
4145         # in such new versions and producing binaries requiring windows 7.0.
4146         # Therefore explicitly set the default to XP unless the user has
4147         # set something else on the command line.
4148         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4149         # family. For these cases, configure is free to use any functions
4150         # found in the SDK headers by default. (Alternatively, we could force
4151         # _WIN32_WINNT to 0x0602 in that case.)
4152         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4153             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4154 #ifdef WINAPI_FAMILY
4155 #include <winapifamily.h>
4156 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4157 #error not desktop
4158 #endif
4159 #endif
4160 EOF
4161         if [ "$pfx" = "" ]; then
4162             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4163         fi
4164     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4165         eval ${pfx}libc_type=klibc
4166     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4167         eval ${pfx}libc_type=bionic
4168     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4169         eval ${pfx}libc_type=solaris
4170         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4171     else
4172         eval ${pfx}libc_type=default
4173         add_${pfx}cppflags -D_DEFAULT_SOURCE
4174     fi
4175 }
4176
4177 probe_libc
4178 test -n "$libc_type" && enable libc_$libc_type
4179 probe_libc host_
4180 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4181
4182 # hacks for compiler/libc/os combinations
4183
4184 case $libc_type in
4185     bionic)
4186         add_compat strtod.o strtod=avpriv_strtod
4187         ;;
4188     glibc)
4189         if enabled tms470; then
4190             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4191             add_cppflags -D__USER_LABEL_PREFIX__=
4192             add_cppflags -D__builtin_memset=memset
4193             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4194             add_cflags   -pds=48    # incompatible redefinition of macro
4195         elif enabled ccc; then
4196             add_ldflags -Wl,-z,now  # calls to libots crash without this
4197         fi
4198         ;;
4199 esac
4200
4201 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4202     add_cppflags '-I\$(SRC_PATH)/compat/float'
4203
4204 esc(){
4205     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4206 }
4207
4208 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4209
4210 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4211
4212 set_default $PATHS_LIST
4213 set_default nm
4214
4215 # we need to build at least one lib type
4216 if ! enabled_any static shared; then
4217     cat <<EOF
4218 At least one library type must be built.
4219 Specify --enable-static to build the static libraries or --enable-shared to
4220 build the shared libraries as well. To only build the shared libraries specify
4221 --disable-static in addition to --enable-shared.
4222 EOF
4223     exit 1
4224 fi
4225
4226 disabled optimizations || check_cflags -fomit-frame-pointer
4227
4228 enable_weak_pic() {
4229     disabled pic && return
4230     enable pic
4231     add_cppflags -DPIC
4232     case "$target_os" in
4233     mingw*|cygwin*)
4234         ;;
4235     *)
4236         add_cflags -fPIC
4237         ;;
4238     esac
4239     add_asflags  -fPIC
4240 }
4241
4242 enabled pic && enable_weak_pic
4243
4244 check_cc <<EOF || die "Symbol mangling check failed."
4245 int ff_extern;
4246 EOF
4247 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4248 extern_prefix=${sym%%ff_extern*}
4249
4250 check_inline_asm inline_asm '"" ::'
4251
4252 _restrict=
4253 for restrict_keyword in restrict __restrict__ __restrict; do
4254     check_cc <<EOF && _restrict=$restrict_keyword && break
4255 void foo(char * $restrict_keyword p);
4256 EOF
4257 done
4258
4259 check_cc <<EOF && enable pragma_deprecated
4260 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4261 EOF
4262
4263 check_cc <<EOF && enable attribute_packed
4264 struct { int x; } __attribute__((packed)) x;
4265 EOF
4266
4267 check_cc <<EOF && enable attribute_may_alias
4268 union { int x; } __attribute__((may_alias)) x;
4269 EOF
4270
4271 check_cc <<EOF || die "endian test failed"
4272 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4273 EOF
4274 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4275
4276 check_gas() {
4277     log "check_gas using '$as' as AS"
4278     # :vararg is used on aarch64, arm and ppc altivec
4279     check_as <<EOF || return 1
4280 .macro m n, y:vararg=0
4281 \n: .int \y
4282 .endm
4283 m x
4284 EOF
4285     # .altmacro is only used in arm asm
4286     ! enabled arm || check_as <<EOF || return 1
4287 .altmacro
4288 EOF
4289     enable gnu_as
4290     return 0
4291 }
4292
4293 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4294     nogas=:
4295     enabled_any arm aarch64 && nogas=die
4296     enabled_all ppc altivec && nogas=warn
4297     as_noop=-v
4298
4299     case $as_type in
4300         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4301         gcc)  gaspp_as_type=gas ;;
4302         *)    gaspp_as_type=$as_type ;;
4303     esac
4304
4305     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4306
4307     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4308         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4309
4310     if ! check_gas ; then
4311         as=${gas:=$as}
4312         check_gas || \
4313             $nogas "GNU assembler not found, install/update gas-preprocessor"
4314     fi
4315
4316     check_as <<EOF && enable as_func
4317 .func test
4318 .endfunc
4319 EOF
4320 fi
4321
4322 check_inline_asm inline_asm_labels '"1:\n"'
4323
4324 if enabled aarch64; then
4325     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4326     # internal assembler in clang 3.3 does not support this instruction
4327     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4328     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4329
4330     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4331
4332 elif enabled alpha; then
4333
4334     check_cflags -mieee
4335
4336 elif enabled arm; then
4337
4338     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4339     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4340     enabled thumb && check_cflags -mthumb || check_cflags -marm
4341
4342     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4343         enable vfp_args
4344     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4345         enable vfp_args
4346     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4347         case "${cross_prefix:-$cc}" in
4348             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4349             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4350 __asm__ (".eabi_attribute 28, 1");
4351 int main(void) { return 0; }
4352 EOF
4353         esac
4354         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4355     fi
4356
4357     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4358     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4359     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4360     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4361     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4362     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4363
4364     [ $target_os = linux ] || [ $target_os = android ] ||
4365         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4366             $ARCH_EXT_LIST_ARM
4367
4368     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4369
4370     check_as <<EOF && enable as_dn_directive
4371 ra .dn d0.i16
4372 .unreq ra
4373 EOF
4374     check_as <<EOF && enable as_fpu_directive
4375 .fpu neon
4376 EOF
4377
4378     # llvm's integrated assembler supports .object_arch from llvm 3.5
4379     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4380         check_as <<EOF && enable as_object_arch
4381 .object_arch armv4
4382 EOF
4383
4384     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4385
4386 elif enabled mips; then
4387
4388     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4389
4390     # make sure that only an instruction set is enabled
4391     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4392
4393     if enabled mips64; then
4394         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4395             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4396                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4397     else
4398         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4399             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4400                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4401     fi
4402
4403 elif enabled parisc; then
4404
4405     if enabled gcc; then
4406         case $($cc -dumpversion) in
4407             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4408         esac
4409     fi
4410
4411 elif enabled ppc; then
4412
4413     enable local_aligned_8 local_aligned_16 local_aligned_32
4414
4415     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4416     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4417     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4418     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4419
4420     # AltiVec flags: The FSF version of GCC differs from the Apple version
4421     if enabled altivec; then
4422         check_cflags -maltivec -mabi=altivec &&
4423         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4424         check_cflags -faltivec
4425
4426         # check if our compiler supports Motorola AltiVec C API
4427         check_cc <<EOF || disable altivec
4428 $inc_altivec_h
4429 int main(void) {
4430     vector signed int v1 = (vector signed int) { 0 };
4431     vector signed int v2 = (vector signed int) { 1 };
4432     v1 = vec_add(v1, v2);
4433     return 0;
4434 }
4435 EOF
4436
4437         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4438     fi
4439
4440     if enabled vsx; then
4441         check_cflags -mvsx &&
4442         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4443     fi
4444
4445     if enabled power8; then
4446         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4447     fi
4448
4449 elif enabled x86; then
4450
4451     check_builtin rdtsc    intrin.h   "__rdtsc()"
4452     check_builtin mm_empty mmintrin.h "_mm_empty()"
4453
4454     enable local_aligned_8 local_aligned_16 local_aligned_32
4455
4456     # check whether EBP is available on x86
4457     # As 'i' is stored on the stack, this program will crash
4458     # if the base pointer is used to access it because the
4459     # base pointer is cleared in the inline assembly code.
4460     check_exec_crash <<EOF && enable ebp_available
4461 volatile int i=0;
4462 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4463 return i;
4464 EOF
4465
4466     # check whether EBX is available on x86
4467     check_inline_asm ebx_available '""::"b"(0)' &&
4468         check_inline_asm ebx_available '"":::"%ebx"'
4469
4470     # check whether xmm clobbers are supported
4471     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4472
4473     # check whether binutils is new enough to compile SSSE3/MMXEXT
4474     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4475     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4476
4477     if ! disabled_any asm mmx x86asm; then
4478         if check_cmd $x86asmexe --version; then
4479             x86asm_debug="-g dwarf2"
4480             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4481         elif check_cmd nasm -v; then
4482             x86asmexe=nasm
4483             x86asm_debug="-g -F dwarf"
4484             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4485         fi
4486
4487         X86ASMFLAGS="-f $objformat"
4488         enabled pic               && append X86ASMFLAGS "-DPIC"
4489         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4490         case "$objformat" in
4491             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4492         esac
4493
4494         check_x86asm "movbe ecx, [5]" && enable x86asm ||
4495             die "yasm/nasm not found or too old. Use --disable-x86asm for a crippled build."
4496         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4497         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4498         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4499         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4500         check_x86asm "CPU amdnop"                      || disable cpunop
4501     fi
4502
4503     case "$cpu" in
4504         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4505             disable fast_clz
4506         ;;
4507     esac
4508
4509 fi
4510
4511 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4512
4513 check_ldflags -Wl,--as-needed
4514
4515 if ! disabled network; then
4516     check_func getaddrinfo $network_extralibs
4517     check_func inet_aton $network_extralibs
4518
4519     check_type netdb.h "struct addrinfo"
4520     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4521     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4522     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4523     check_type poll.h "struct pollfd"
4524     check_type netinet/sctp.h "struct sctp_event_subscribe"
4525     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4526     check_type netinet/in.h "struct sockaddr_in6"
4527     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4528     check_type "sys/types.h sys/socket.h" socklen_t
4529
4530     # Prefer arpa/inet.h over winsock2
4531     if check_header arpa/inet.h ; then
4532         check_func closesocket
4533     elif check_header winsock2.h ; then
4534         check_func_headers winsock2.h closesocket -lws2 &&
4535             network_extralibs="-lws2" ||
4536         { check_func_headers winsock2.h closesocket -lws2_32 &&
4537             network_extralibs="-lws2_32"; } || disable winsock2_h network
4538         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4539
4540         check_type ws2tcpip.h socklen_t
4541         check_type ws2tcpip.h "struct addrinfo"
4542         check_type ws2tcpip.h "struct group_source_req"
4543         check_type ws2tcpip.h "struct ip_mreq_source"
4544         check_type ws2tcpip.h "struct ipv6_mreq"
4545         check_type winsock2.h "struct pollfd"
4546         check_struct winsock2.h "struct sockaddr" sa_len
4547         check_type ws2tcpip.h "struct sockaddr_in6"
4548         check_type ws2tcpip.h "struct sockaddr_storage"
4549     else
4550         disable network
4551     fi
4552 fi
4553
4554 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4555 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4556 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4557 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4558
4559 case "$custom_allocator" in
4560     jemalloc)
4561         # jemalloc by default does not use a prefix
4562         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4563     ;;
4564     tcmalloc)
4565         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4566         malloc_prefix=tc_
4567     ;;
4568 esac
4569
4570 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4571 check_func  ${malloc_prefix}memalign            && enable memalign
4572 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4573
4574 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4575     { check_lib clock_gettime time.h clock_gettime ||
4576       check_lib clock_gettime time.h clock_gettime -lrt; }
4577
4578 check_func  fcntl
4579 check_func  fork
4580 check_func  gethrtime
4581 check_func  getopt
4582 check_func  getrusage
4583 check_func  gettimeofday
4584 check_func  gmtime_r
4585 check_func  isatty
4586 check_func  localtime_r
4587 check_func  mach_absolute_time
4588 check_func  mkstemp
4589 check_func  mmap
4590 check_func  mprotect
4591 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4592 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4593 check_func  sched_getaffinity
4594 check_func  setrlimit
4595 check_func  strerror_r
4596 check_func  sysconf
4597 check_func  sysctl
4598 check_func  usleep
4599
4600 check_func_headers io.h setmode
4601 check_func_headers stdlib.h getenv
4602
4603 check_func_headers windows.h GetProcessAffinityMask
4604 check_func_headers windows.h GetProcessTimes
4605 check_func_headers windows.h GetSystemTimeAsFileTime
4606 check_func_headers windows.h LoadLibrary
4607 check_func_headers windows.h MapViewOfFile
4608 check_func_headers windows.h SetConsoleTextAttribute
4609 check_func_headers windows.h Sleep
4610 check_func_headers windows.h VirtualAlloc
4611 check_struct windows.h "CONDITION_VARIABLE" Ptr
4612
4613 check_header d3d11.h
4614 check_header direct.h
4615 check_header dlfcn.h
4616 check_header dxva.h
4617 check_header dxva2api.h
4618 check_header io.h
4619 check_header mach/mach_time.h
4620 check_header malloc.h
4621 check_header poll.h
4622 check_header sys/mman.h
4623 check_header sys/param.h
4624 check_header sys/resource.h
4625 check_header sys/select.h
4626 check_header sys/time.h
4627 check_header sys/un.h
4628 check_header unistd.h
4629 check_header valgrind/valgrind.h
4630 check_header VideoDecodeAcceleration/VDADecoder.h
4631 check_header windows.h
4632 check_header X11/extensions/XvMClib.h
4633
4634 # it seems there are versions of clang in some distros that try to use the
4635 # gcc headers, which explodes for stdatomic
4636 # so we also check that atomics actually work here
4637 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4638
4639 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4640 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4641 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4642
4643 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4644
4645 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4646 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4647 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4648
4649 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4650 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4651 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4652 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4653 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4654 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4655 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4656 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4657
4658 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4659
4660 if ! disabled w32threads && ! enabled pthreads; then
4661     check_lib w32threads "windows.h process.h" _beginthreadex
4662 fi
4663
4664 # check for some common methods of building with pthread support
4665 # do this before the optional library checks as some of them require pthreads
4666 if ! disabled pthreads && ! enabled w32threads; then
4667     if check_lib pthreads pthread.h pthread_join -pthread; then
4668         add_cflags -pthread
4669     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4670         add_cflags -pthreads
4671     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4672         :
4673     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4674         :
4675     elif check_func pthread_join; then
4676         enable pthreads
4677     fi
4678 fi
4679
4680 enabled pthreads &&
4681     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4682
4683 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4684 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4685
4686 # On some systems dynamic loading requires no extra linker flags
4687 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4688
4689 check_lib libm math.h sin -lm
4690
4691 atan2f_args=2
4692 ldexpf_args=2
4693 powf_args=2
4694
4695 for func in $MATH_FUNCS; do
4696     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4697 done
4698
4699 # these are off by default, so fail if requested and not available
4700 enabled avisynth          && require_header avisynth/avisynth_c.h
4701 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4702 enabled cuda              && require cuda cuda.h cuInit -lcuda
4703 enabled frei0r            && require_header frei0r.h
4704 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4705 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4706 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4707 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4708 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4709 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4710 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4711 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4712 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4713                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4714                                done || die "ERROR: libgsm not found"; }
4715 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4716 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4717 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4718 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4719 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4720 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4721 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4722 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4723 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4724 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4725 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4726                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4727 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4728 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4729 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4730 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4731 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4732 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4733 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4734 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4735 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4736 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4737 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4738 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4739                              { enabled libvpx_vp8_decoder &&
4740                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4741                                enabled libvpx_vp8_encoder &&
4742                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4743                                enabled libvpx_vp9_decoder &&
4744                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4745                                enabled libvpx_vp9_encoder &&
4746                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4747                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4748                                    die "libvpx enabled but no supported decoders/encoders found"
4749                              }
4750 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4751 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4752 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4753                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4754                              { check_cpp_condition x264.h "X264_MPEG2" &&
4755                                enable libx262; }
4756 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4757                              require_cpp_condition x265.h "X265_BUILD >= 57"
4758 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4759 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4760 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4761                                { ! enabled cross_compile &&
4762                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4763                                  add_ldflags -L/opt/vc/lib/ &&
4764                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4765                                die "ERROR: mmal not found" &&
4766                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4767 enabled omx               && require_header OMX_Core.h
4768 enabled omx_rpi           && { check_header OMX_Core.h ||
4769                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4770                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4771 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4772                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4773                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4774                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4775                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4776                                die "ERROR: openssl not found"; }
4777
4778 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4779
4780 if enabled nvenc; then
4781     require_header nvEncodeAPI.h
4782     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4783 fi
4784
4785 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4786 if enabled avplay; then
4787     CFLAGS_SAVE=$CFLAGS
4788     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4789     sdl_cflags=$pkg_cflags
4790     CFLAGS=$CFLAGS_SAVE
4791 fi
4792
4793 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4794 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4795
4796 check_header linux/fb.h
4797 check_header linux/videodev2.h
4798 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4799
4800 check_header AVFoundation/AVFoundation.h
4801
4802 check_header sys/videoio.h
4803
4804 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4805 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4806 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4807 # w32api 3.12 had it defined wrong
4808 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4809
4810 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4811 { check_header dev/bktr/ioctl_meteor.h &&
4812   check_header dev/bktr/ioctl_bt848.h; } ||
4813 { check_header machine/ioctl_meteor.h &&
4814   check_header machine/ioctl_bt848.h; } ||
4815 { check_header dev/video/meteor/ioctl_meteor.h &&
4816   check_header dev/video/bktr/ioctl_bt848.h; } ||
4817 check_header dev/ic/bt8xx.h
4818
4819 check_header sys/soundcard.h
4820 check_header soundcard.h
4821
4822 enabled_any alsa_indev alsa_outdev &&
4823     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4824
4825 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
4826     check_func jack_port_get_latency_range -ljack
4827
4828 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4829
4830 if enabled libcdio; then
4831     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4832     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4833     die "ERROR: No usable libcdio/cdparanoia found"