configure: Extend check_header() to allow checking for multiple headers
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-pod2man        do not build manual pages
117   --disable-texi2html      do not build HTML documentation
118   --disable-avdevice       disable libavdevice build
119   --disable-avcodec        disable libavcodec build
120   --disable-avformat       disable libavformat build
121   --disable-avutil         disable libavutil build
122   --disable-swscale        disable libswscale build
123   --disable-avfilter       disable video filter support [no]
124   --disable-avresample     disable libavresample build [no]
125   --disable-pthreads       disable pthreads [auto]
126   --disable-w32threads     disable Win32 threads [auto]
127   --disable-network        disable network support [no]
128   --disable-dct            disable DCT code
129   --disable-error-resilience disable error resilience code
130   --disable-lsp            disable LSP code
131   --disable-lzo            disable LZO decoder code
132   --disable-mdct           disable MDCT code
133   --disable-rdft           disable RDFT code
134   --disable-fft            disable FFT code
135   --disable-faan           disable floating point AAN (I)DCT code
136
137 Individual component options:
138   --disable-everything     disable all components listed below
139   --disable-encoder=NAME   disable encoder NAME
140   --enable-encoder=NAME    enable encoder NAME
141   --disable-encoders       disable all encoders
142   --disable-decoder=NAME   disable decoder NAME
143   --enable-decoder=NAME    enable decoder NAME
144   --disable-decoders       disable all decoders
145   --disable-hwaccel=NAME   disable hwaccel NAME
146   --enable-hwaccel=NAME    enable hwaccel NAME
147   --disable-hwaccels       disable all hwaccels
148   --disable-muxer=NAME     disable muxer NAME
149   --enable-muxer=NAME      enable muxer NAME
150   --disable-muxers         disable all muxers
151   --disable-demuxer=NAME   disable demuxer NAME
152   --enable-demuxer=NAME    enable demuxer NAME
153   --disable-demuxers       disable all demuxers
154   --enable-parser=NAME     enable parser NAME
155   --disable-parser=NAME    disable parser NAME
156   --disable-parsers        disable all parsers
157   --enable-bsf=NAME        enable bitstream filter NAME
158   --disable-bsf=NAME       disable bitstream filter NAME
159   --disable-bsfs           disable all bitstream filters
160   --enable-protocol=NAME   enable protocol NAME
161   --disable-protocol=NAME  disable protocol NAME
162   --disable-protocols      disable all protocols
163   --enable-indev=NAME      enable input device NAME
164   --disable-indev=NAME     disable input device NAME
165   --disable-indevs         disable input devices
166   --enable-outdev=NAME     enable output device NAME
167   --disable-outdev=NAME    disable output device NAME
168   --disable-outdevs        disable output devices
169   --disable-devices        disable all devices
170   --enable-filter=NAME     enable filter NAME
171   --disable-filter=NAME    disable filter NAME
172   --disable-filters        disable all filters
173
174 External library support:
175
176   Using any of the following switches will allow Libav to link to the
177   corresponding external library. All the components depending on that library
178   will become enabled, if all their other dependencies are met and they are not
179   explicitly disabled. E.g. --enable-libwavpack will enable linking to
180   libwavpack and allow the libwavpack encoder to be built, unless it is
181   specifically disabled with --disable-encoder=libwavpack.
182
183   Note that only the system libraries are auto-detected. All the other external
184   libraries must be explicitly enabled.
185
186   Also note that the following help text describes the purpose of the libraries
187   themselves, not all their features will necessarily be usable by Libav.
188
189   --enable-avisynth          video frameserver
190   --enable-avxsynth          Linux version of AviSynth
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libjack           JACK audio sound server
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-cuvid   Nvidia CUVID video decode acceleration
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
287   --extra-libs=ELIBS       add ELIBS [$ELIBS]
288   --extra-version=STRING   version string suffix []
289   --optflags=OPTFLAGS      override optimization-related compiler flags
290   --enable-pic             build position-independent code
291   --enable-thumb           compile for Thumb instruction set
292   --enable-lto             use link-time optimization
293   --env="ENV=override"     override the environment variables
294
295 Advanced options (experts only):
296   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
297   --custom-allocator=NAME  use a supported custom allocator
298   --disable-symver         disable symbol versioning
299   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
300   --disable-safe-bitstream-reader
301                            disable buffer boundary checking in bitreaders
302                            (faster, but may crash)
303   --enable-sram            allow use of on-chip SRAM
304
305 Optimization options (experts only):
306   --disable-asm            disable all assembly optimizations
307   --disable-altivec        disable AltiVec optimizations
308   --disable-vsx            disable VSX optimizations
309   --disable-power8         disable POWER8 optimizations
310   --disable-amd3dnow       disable 3DNow! optimizations
311   --disable-amd3dnowext    disable 3DNow! extended optimizations
312   --disable-mmx            disable MMX optimizations
313   --disable-mmxext         disable MMXEXT optimizations
314   --disable-sse            disable SSE optimizations
315   --disable-sse2           disable SSE2 optimizations
316   --disable-sse3           disable SSE3 optimizations
317   --disable-ssse3          disable SSSE3 optimizations
318   --disable-sse4           disable SSE4 optimizations
319   --disable-sse42          disable SSE4.2 optimizations
320   --disable-avx            disable AVX optimizations
321   --disable-xop            disable XOP optimizations
322   --disable-fma3           disable FMA3 optimizations
323   --disable-fma4           disable FMA4 optimizations
324   --disable-avx2           disable AVX2 optimizations
325   --disable-armv5te        disable armv5te optimizations
326   --disable-armv6          disable armv6 optimizations
327   --disable-armv6t2        disable armv6t2 optimizations
328   --disable-vfp            disable VFP optimizations
329   --disable-neon           disable NEON optimizations
330   --disable-inline-asm     disable use of inline assembly
331   --disable-x86asm         disable use of standalone x86 assembly
332
333 Developer options (useful when working on Libav itself):
334   --disable-debug          disable debugging symbols
335   --enable-debug=LEVEL     set the debug level [$debuglevel]
336   --disable-optimizations  disable compiler optimizations
337   --enable-extra-warnings  enable more compiler warnings
338   --samples=PATH           location of test samples for FATE, if not set use
339                            \$LIBAV_SAMPLES at make invocation time.
340   --enable-neon-clobber-test check NEON registers for clobbering (should be
341                            used only for debugging purposes)
342   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
343                            should be used only for debugging purposes)
344   --disable-valgrind-backtrace do not print a backtrace under Valgrind
345                            (only applies to --disable-optimizations builds)
346   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
347                            in the name) of tests whose result is ignored
348
349 NOTE: Object files are built at the place where configure is launched.
350 EOF
351   exit 0
352 }
353
354 quotes='""'
355
356 log(){
357     echo "$@" >> $logfile
358 }
359
360 log_file(){
361     log BEGIN $1
362     i=1
363     while read line; do
364         printf '%5s   %s\n' "${i}" "${line}"
365         i=$(($i+1))
366     done < $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_sanitized(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_sanitized(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_sanitized(){
519     for var; do
520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
521     done
522 }
523
524 disable_sanitized(){
525     for var; do
526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op== || op=!=
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 check_deps(){
609     for cfg; do
610         enabled ${cfg}_checking && die "Circular dependency for $cfg."
611         disabled ${cfg}_checking && continue
612         enable ${cfg}_checking
613
614         eval dep_all="\$${cfg}_deps"
615         eval dep_any="\$${cfg}_deps_any"
616         eval dep_con="\$${cfg}_conflict"
617         eval dep_sel="\$${cfg}_select"
618         eval dep_sgs="\$${cfg}_suggest"
619         eval dep_ifa="\$${cfg}_if"
620         eval dep_ifn="\$${cfg}_if_any"
621
622         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
623         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
624         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
625
626         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
627         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
628         enabled_all  $dep_all || disable $cfg
629         enabled_any  $dep_any || disable $cfg
630         disabled_all $dep_con || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
634
635         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
636             # filter out library deps, these do not belong in extralibs
637             is_in $dep $LIBRARY_LIST && continue
638             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
639         done
640
641         disable ${cfg}_checking
642     done
643 }
644
645 print_config(){
646     pfx=$1
647     files=$2
648     shift 2
649     map 'eval echo "$v \${$v:-no}"' "$@" |
650     awk "BEGIN { split(\"$files\", files) }
651         {
652             c = \"$pfx\" toupper(\$1);
653             v = \$2;
654             sub(/yes/, 1, v);
655             sub(/no/,  0, v);
656             for (f in files) {
657                 file = files[f];
658                 if (file ~ /\\.h\$/) {
659                     printf(\"#define %s %d\\n\", c, v) >>file;
660                 } else if (file ~ /\\.asm\$/) {
661                     printf(\"%%define %s %d\\n\", c, v) >>file;
662                 } else if (file ~ /\\.mak\$/) {
663                     n = -v ? \"\" : \"!\";
664                     printf(\"%s%s=yes\\n\", n, c) >>file;
665                 }
666             }
667         }"
668 }
669
670 print_enabled(){
671     suf=$1
672     shift
673     for v; do
674         enabled $v && printf "%s\n" ${v%$suf}
675     done
676 }
677
678 append(){
679     var=$1
680     shift
681     eval "$var=\"\$$var $*\""
682 }
683
684 prepend(){
685     var=$1
686     shift
687     eval "$var=\"$* \$$var\""
688 }
689
690 unique(){
691     var=$1
692     uniq_list=""
693     for tok in $(eval echo \$$var); do
694         uniq_list="$(filter_out $tok $uniq_list) $tok"
695     done
696     eval "$var=\"${uniq_list}\""
697 }
698
699 resolve(){
700     var=$1
701     tmpvar=
702     for entry in $(eval echo \$$var); do
703         tmpvar="$tmpvar $(eval echo \$${entry})"
704     done
705     eval "$var=\"${tmpvar}\""
706 }
707
708 add_cppflags(){
709     append CPPFLAGS "$@"
710 }
711
712 add_cflags(){
713     append CFLAGS $($cflags_filter "$@")
714 }
715
716 add_cflags_headers(){
717     append CFLAGS_HEADERS $($cflags_filter "$@")
718 }
719
720 add_asflags(){
721     append ASFLAGS $($asflags_filter "$@")
722 }
723
724 add_objcflags(){
725     append OBJCFLAGS $($objcflags_filter "$@")
726 }
727
728 add_ldflags(){
729     append LDFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldexeflags(){
733     append LDEXEFLAGS $($ldflags_filter "$@")
734 }
735
736 add_ldsoflags(){
737     append LDSOFLAGS $($ldflags_filter "$@")
738 }
739
740 add_stripflags(){
741     append STRIPFLAGS "$@"
742 }
743
744 add_extralibs(){
745     prepend extralibs $($ldflags_filter "$@")
746 }
747
748 add_host_cppflags(){
749     append host_cppflags "$@"
750 }
751
752 add_host_cflags(){
753     append host_cflags $($host_cflags_filter "$@")
754 }
755
756 add_host_ldflags(){
757     append host_ldflags $($host_ldflags_filter "$@")
758 }
759
760 add_compat(){
761     append compat_objs $1
762     shift
763     map 'add_cppflags -D$v' "$@"
764 }
765
766 check_cmd(){
767     log "$@"
768     "$@" >> $logfile 2>&1
769 }
770
771 cc_o(){
772     eval printf '%s\\n' $CC_O
773 }
774
775 cc_e(){
776     eval printf '%s\\n' $CC_E
777 }
778
779 check_cc(){
780     log check_cc "$@"
781     cat > $TMPC
782     log_file $TMPC
783     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
784 }
785
786 check_objcc(){
787     log check_objcc "$@"
788     cat > $TMPC
789     log_file $TMPC
790     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
791 }
792
793 check_cpp(){
794     log check_cpp "$@"
795     cat > $TMPC
796     log_file $TMPC
797     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
798 }
799
800 as_o(){
801     eval printf '%s\\n' $AS_O
802 }
803
804 check_as(){
805     log check_as "$@"
806     cat > $TMPS
807     log_file $TMPS
808     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
809 }
810
811 check_inline_asm(){
812     log check_inline_asm "$@"
813     name="$1"
814     code="$2"
815     shift 2
816     disable $name
817     check_cc "$@" <<EOF && enable $name
818 void foo(void){ __asm__ volatile($code); }
819 EOF
820 }
821
822 check_insn(){
823     log check_insn "$@"
824     check_inline_asm ${1}_inline "\"$2\""
825     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
826 }
827
828 check_x86asm(){
829     log check_x86asm "$@"
830     echo "$1" > $TMPS
831     log_file $TMPS
832     shift 1
833     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
834 }
835
836 ld_o(){
837     eval printf '%s\\n' $LD_O
838 }
839
840 check_ld(){
841     log check_ld "$@"
842     flags=$(filter_out '-l*' "$@")
843     libs=$(filter '-l*' "$@")
844     check_cc $($cflags_filter $flags) || return
845     flags=$($ldflags_filter $flags)
846     libs=$($ldflags_filter $libs)
847     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
848 }
849
850 print_include(){
851     hdr=$1
852     test "${hdr%.h}" = "${hdr}" &&
853         echo "#include $hdr"    ||
854         echo "#include <$hdr>"
855 }
856
857 check_code(){
858     log check_code "$@"
859     check=$1
860     headers=$2
861     code=$3
862     shift 3
863     {
864         for hdr in $headers; do
865             print_include $hdr
866         done
867         echo "int main(void) { $code; return 0; }"
868     } | check_$check "$@"
869 }
870
871 check_cppflags(){
872     log check_cppflags "$@"
873     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
874 #include <stdlib.h>;
875 EOF
876 }
877
878 test_cflags(){
879     log test_cflags "$@"
880     set -- $($cflags_filter "$@")
881     check_cc "$@" <<EOF
882 int x;
883 EOF
884 }
885
886 check_cflags(){
887     log check_cflags "$@"
888     test_cflags "$@" && add_cflags "$@"
889 }
890
891 test_objcflags(){
892     log test_objcflags "$@"
893     set -- $($objcflags_filter "$@")
894     check_objcc "$@" <<EOF
895 int x;
896 EOF
897 }
898
899 check_objcflags(){
900     log check_objcflags "$@"
901     test_objcflags "$@" && add_objcflags "$@"
902 }
903
904 test_ldflags(){
905     log test_ldflags "$@"
906     check_ld "$@" <<EOF
907 int main(void){ return 0; }
908 EOF
909 }
910
911 check_ldflags(){
912     log check_ldflags "$@"
913     test_ldflags "$@" && add_ldflags "$@"
914 }
915
916 test_stripflags(){
917     log test_stripflags "$@"
918     # call check_cc to get a fresh TMPO
919     check_cc <<EOF
920 int main(void) { return 0; }
921 EOF
922     check_cmd $strip $STRIPFLAGS "$@" $TMPO
923 }
924
925 check_stripflags(){
926     log check_stripflags "$@"
927     test_stripflags "$@" && add_stripflags "$@"
928 }
929
930 check_header(){
931     log check_header "$@"
932     headers=$1
933     shift
934     disable_sanitized $headers
935     {
936         for hdr in $headers; do
937             print_include $hdr
938         done
939         echo "int x;"
940     } | check_cpp "$@" && enable_sanitized $headers
941 }
942
943 check_func(){
944     log check_func "$@"
945     func=$1
946     shift
947     disable $func
948     check_ld "$@" <<EOF && enable $func
949 extern int $func();
950 int main(void){ $func(); }
951 EOF
952 }
953
954 check_mathfunc(){
955     log check_mathfunc "$@"
956     func=$1
957     narg=$2
958     shift 2
959     test $narg = 2 && args="f, g" || args="f"
960     disable $func
961     check_ld "$@" <<EOF && enable $func
962 #include <math.h>
963 float foo(float f, float g) { return $func($args); }
964 int main(void){ return 0; }
965 EOF
966 }
967
968 check_func_headers(){
969     log check_func_headers "$@"
970     headers=$1
971     funcs=$2
972     shift 2
973     {
974         for hdr in $headers; do
975             print_include $hdr
976         done
977         for func in $funcs; do
978             echo "long check_$func(void) { return (long) $func; }"
979         done
980         echo "int main(void) { return 0; }"
981     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
982 }
983
984 check_cpp_condition(){
985     log check_cpp_condition "$@"
986     header=$1
987     condition=$2
988     shift 2
989     check_cpp "$@" <<EOF
990 #include <$header>
991 #if !($condition)
992 #error "unsatisfied condition: $condition"
993 #endif
994 EOF
995 }
996
997 test_cflags_cpp(){
998     log test_cflags_cpp "$@"
999     flags=$1
1000     condition=$2
1001     shift 2
1002     set -- $($cflags_filter "$flags")
1003     check_cpp "$@" <<EOF
1004 #if !($condition)
1005 #error "unsatisfied condition: $condition"
1006 #endif
1007 EOF
1008 }
1009
1010 check_lib(){
1011     log check_lib "$@"
1012     name="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     disable $name
1017     check_func_headers "$headers" "$funcs" "$@" &&
1018         enable $name && eval ${name}_extralibs="\$@"
1019 }
1020
1021 test_pkg_config(){
1022     log test_pkg_config "$@"
1023     name="$1"
1024     pkg_version="$2"
1025     pkg="${2%% *}"
1026     headers="$3"
1027     funcs="$4"
1028     shift 4
1029     disable $name
1030     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1031     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1032     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1033     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1034         enable $name &&
1035         set_sanitized "${name}_cflags"    $pkg_cflags &&
1036         set_sanitized "${name}_extralibs" $pkg_libs
1037 }
1038
1039 check_pkg_config(){
1040     log check_pkg_config "$@"
1041     name="$1"
1042     test_pkg_config "$@" &&
1043         eval add_cflags \$${name}_cflags
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     headers="$1"
1134     shift
1135     check_header "$headers" "$@" || die "ERROR: $headers not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_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     cuvid
1266     libnpp
1267 "
1268 HWACCEL_LIBRARY_LIST="
1269     $HWACCEL_LIBRARY_NONFREE_LIST
1270     d3d11va
1271     dxva2
1272     libmfx
1273     mmal
1274     nvenc
1275     omx
1276     vaapi
1277     vda
1278     vdpau
1279 "
1280
1281 EXTERNAL_LIBRARY_GPL_LIST="
1282     libcdio
1283     libx264
1284     libx265
1285     libxavs
1286     libxvid
1287 "
1288
1289 EXTERNAL_LIBRARY_NONFREE_LIST="
1290     libfaac
1291     libfdk_aac
1292     openssl
1293 "
1294
1295 EXTERNAL_LIBRARY_VERSION3_LIST="
1296     libopencore_amrnb
1297     libopencore_amrwb
1298     libvo_aacenc
1299     libvo_amrwbenc
1300 "
1301
1302 EXTERNAL_LIBRARY_LIST="
1303     $EXTERNAL_LIBRARY_GPL_LIST
1304     $EXTERNAL_LIBRARY_NONFREE_LIST
1305     $EXTERNAL_LIBRARY_VERSION3_LIST
1306     avisynth
1307     avxsynth
1308     frei0r
1309     gnutls
1310     libbs2b
1311     libdc1394
1312     libdcadec
1313     libfontconfig
1314     libfreetype
1315     libgsm
1316     libhdcd
1317     libilbc
1318     libjack
1319     libkvazaar
1320     libmp3lame
1321     libopencv
1322     libopenh264
1323     libopenjpeg
1324     libopus
1325     libpulse
1326     librtmp
1327     libschroedinger
1328     libsnappy
1329     libspeex
1330     libtheora
1331     libtwolame
1332     libvorbis
1333     libvpx
1334     libwavpack
1335     libwebp
1336     libxcb
1337     libxcb_shm
1338     libxcb_xfixes
1339 "
1340
1341 SYSTEM_LIBRARY_LIST="
1342     bzlib
1343     zlib
1344 "
1345
1346 FEATURE_LIST="
1347     gray
1348     hardcoded_tables
1349     omx_rpi
1350     runtime_cpudetect
1351     safe_bitstream_reader
1352     shared
1353     small
1354     sram
1355     static
1356     swscale_alpha
1357 "
1358
1359 LIBRARY_LIST="
1360     avcodec
1361     avdevice
1362     avfilter
1363     avformat
1364     avresample
1365     avutil
1366     swscale
1367 "
1368
1369 LICENSE_LIST="
1370     gpl
1371     nonfree
1372     version3
1373 "
1374
1375 PROGRAM_LIST="
1376     avconv
1377     avplay
1378     avprobe
1379 "
1380
1381 SUBSYSTEM_LIST="
1382     dct
1383     doc
1384     error_resilience
1385     faan
1386     fft
1387     lsp
1388     lzo
1389     mdct
1390     network
1391     rdft
1392 "
1393
1394 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1395 CONFIG_LIST="
1396     $EXAMPLE_LIST
1397     $EXTERNAL_LIBRARY_LIST
1398     $HWACCEL_LIBRARY_LIST
1399     $FEATURE_LIST
1400     $LICENSE_LIST
1401     $LIBRARY_LIST
1402     $PROGRAM_LIST
1403     $SUBSYSTEM_LIST
1404     $SYSTEM_LIBRARY_LIST
1405     neon_clobber_test
1406     pic
1407     pod2man
1408     texi2html
1409     thumb
1410     valgrind_backtrace
1411     xmm_clobber_test
1412     $COMPONENT_LIST
1413 "
1414
1415 THREADS_LIST="
1416     pthreads
1417     w32threads
1418 "
1419
1420 ATOMICS_LIST="
1421     atomics_gcc
1422     atomics_suncc
1423     atomics_win32
1424 "
1425
1426 ARCH_LIST="
1427     aarch64
1428     alpha
1429     arm
1430     avr32
1431     avr32_ap
1432     avr32_uc
1433     bfin
1434     ia64
1435     m68k
1436     mips
1437     mips64
1438     parisc
1439     ppc
1440     ppc64
1441     s390
1442     sh4
1443     sparc
1444     sparc64
1445     tilegx
1446     tilepro
1447     tomi
1448     x86
1449     x86_32
1450     x86_64
1451 "
1452
1453 ARCH_EXT_LIST_ARM="
1454     armv5te
1455     armv6
1456     armv6t2
1457     armv8
1458     neon
1459     vfp
1460     vfpv3
1461 "
1462
1463 ARCH_EXT_LIST_X86_SIMD="
1464     amd3dnow
1465     amd3dnowext
1466     avx
1467     avx2
1468     fma3
1469     fma4
1470     mmx
1471     mmxext
1472     sse
1473     sse2
1474     sse3
1475     sse4
1476     sse42
1477     ssse3
1478     xop
1479 "
1480
1481 ARCH_EXT_LIST_PPC="
1482     altivec
1483     dcbzl
1484     ldbrx
1485     power8
1486     ppc4xx
1487     vsx
1488 "
1489
1490 ARCH_EXT_LIST_X86="
1491     $ARCH_EXT_LIST_X86_SIMD
1492     cpunop
1493     i686
1494 "
1495
1496 ARCH_EXT_LIST_MIPS="
1497     loongson
1498     mips32r1
1499     mips64r1
1500     mips32r2
1501     mips64r2
1502     mips32r6
1503     mips64r6
1504 "
1505
1506 ARCH_EXT_LIST="
1507     $ARCH_EXT_LIST_ARM
1508     $ARCH_EXT_LIST_MIPS
1509     $ARCH_EXT_LIST_PPC
1510     $ARCH_EXT_LIST_X86
1511     vis
1512 "
1513
1514 ARCH_FEATURES="
1515     aligned_stack
1516     fast_64bit
1517     fast_clz
1518     fast_cmov
1519     local_aligned_8
1520     local_aligned_16
1521     local_aligned_32
1522     simd_align_16
1523     simd_align_32
1524 "
1525
1526 BUILTIN_LIST="
1527     atomic_cas_ptr
1528     machine_rw_barrier
1529     MemoryBarrier
1530     mm_empty
1531     rdtsc
1532     sem_timedwait
1533     sync_val_compare_and_swap
1534 "
1535 HAVE_LIST_CMDLINE="
1536     inline_asm
1537     symver
1538     x86asm
1539 "
1540
1541 HAVE_LIST_PUB="
1542     bigendian
1543     fast_unaligned
1544 "
1545
1546 HEADERS_LIST="
1547     AVFoundation_AVFoundation_h
1548     arpa_inet_h
1549     cdio_paranoia_h
1550     cdio_paranoia_paranoia_h
1551     dispatch_dispatch_h
1552     dev_bktr_ioctl_bt848_h
1553     dev_bktr_ioctl_meteor_h
1554     dev_ic_bt8xx_h
1555     dev_video_bktr_ioctl_bt848_h
1556     dev_video_meteor_ioctl_meteor_h
1557     direct_h
1558     dxgidebug_h
1559     dxva_h
1560     io_h
1561     machine_ioctl_bt848_h
1562     machine_ioctl_meteor_h
1563     malloc_h
1564     poll_h
1565     stdatomic_h
1566     sys_param_h
1567     sys_resource_h
1568     sys_select_h
1569     sys_soundcard_h
1570     sys_time_h
1571     sys_un_h
1572     sys_videoio_h
1573     unistd_h
1574     valgrind_valgrind_h
1575     windows_h
1576     winsock2_h
1577 "
1578
1579 INTRINSICS_LIST="
1580     intrinsics_neon
1581 "
1582
1583 MATH_FUNCS="
1584     atanf
1585     atan2f
1586     cbrtf
1587     cosf
1588     exp2
1589     exp2f
1590     expf
1591     isinf
1592     isnan
1593     ldexpf
1594     llrint
1595     llrintf
1596     log2
1597     log2f
1598     log10f
1599     lrint
1600     lrintf
1601     powf
1602     rint
1603     round
1604     roundf
1605     sinf
1606     trunc
1607     truncf
1608 "
1609
1610 SYSTEM_FUNCS="
1611     aligned_malloc
1612     clock_gettime
1613     closesocket
1614     CommandLineToArgvW
1615     CryptGenRandom
1616     fcntl
1617     getaddrinfo
1618     gethrtime
1619     getopt
1620     GetProcessAffinityMask
1621     GetProcessMemoryInfo
1622     GetProcessTimes
1623     getrusage
1624     GetSystemTimeAsFileTime
1625     gettimeofday
1626     gmtime_r
1627     inet_aton
1628     isatty
1629     localtime_r
1630     mach_absolute_time
1631     MapViewOfFile
1632     memalign
1633     mmap
1634     mprotect
1635     nanosleep
1636     posix_memalign
1637     sched_getaffinity
1638     SetConsoleTextAttribute
1639     setmode
1640     setrlimit
1641     Sleep
1642     strerror_r
1643     sysconf
1644     sysctl
1645     usleep
1646     VirtualAlloc
1647 "
1648
1649 TOOLCHAIN_FEATURES="
1650     as_arch_directive
1651     as_fpu_directive
1652     as_func
1653     as_object_arch
1654     asm_mod_q
1655     blocks_extension
1656     ebp_available
1657     ebx_available
1658     gnu_as
1659     ibm_asm
1660     inline_asm_labels
1661     pragma_deprecated
1662     symver_asm_label
1663     symver_gnu_asm
1664     vfp_args
1665     xform_asm
1666     xmm_clobbers
1667 "
1668
1669 TYPES_LIST="
1670     CONDITION_VARIABLE_Ptr
1671     CUVIDDECODECREATEINFO_bitDepthMinus8
1672     socklen_t
1673     struct_addrinfo
1674     struct_group_source_req
1675     struct_ip_mreq_source
1676     struct_ipv6_mreq
1677     struct_pollfd
1678     struct_rusage_ru_maxrss
1679     struct_sockaddr_in6
1680     struct_sockaddr_sa_len
1681     struct_sockaddr_storage
1682     struct_v4l2_frmivalenum_discrete
1683 "
1684
1685 HAVE_LIST="
1686     $ARCH_EXT_LIST
1687     $(add_suffix _external $ARCH_EXT_LIST)
1688     $(add_suffix _inline   $ARCH_EXT_LIST)
1689     $ARCH_FEATURES
1690     $BUILTIN_LIST
1691     $HAVE_LIST_CMDLINE
1692     $HAVE_LIST_PUB
1693     $HEADERS_LIST
1694     $INTRINSICS_LIST
1695     $MATH_FUNCS
1696     $SYSTEM_FUNCS
1697     $THREADS_LIST
1698     $TOOLCHAIN_FEATURES
1699     $TYPES_LIST
1700     dos_paths
1701     libc_msvcrt
1702     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1703     sdl
1704     section_data_rel_ro
1705     threads
1706     uwp
1707     vaapi_drm
1708     vaapi_x11
1709     vdpau_x11
1710 "
1711
1712 # options emitted with CONFIG_ prefix but not available on the command line
1713 CONFIG_EXTRA="
1714     aandcttables
1715     ac3dsp
1716     adts_header
1717     audio_frame_queue
1718     audiodsp
1719     blockdsp
1720     bswapdsp
1721     cabac
1722     cbs
1723     cbs_h264
1724     cbs_h265
1725     cbs_mpeg2
1726     dirac_parse
1727     dvprofile
1728     faandct
1729     faanidct
1730     fdctdsp
1731     flacdsp
1732     fmtconvert
1733     g722dsp
1734     gmp
1735     golomb
1736     gplv3
1737     h263dsp
1738     h264chroma
1739     h264dsp
1740     h264parse
1741     h264pred
1742     h264qpel
1743     hevcparse
1744     hpeldsp
1745     huffman
1746     huffyuvdsp
1747     huffyuvencdsp
1748     idctdsp
1749     iirfilter
1750     imdct15
1751     intrax8
1752     iso_media
1753     ividsp
1754     jpegtables
1755     lgplv3
1756     libx262
1757     libxcb_shape
1758     lpc
1759     lzf
1760     me_cmp
1761     mpeg_er
1762     mpegaudio
1763     mpegaudiodsp
1764     mpegaudioheader
1765     mpegvideo
1766     mpegvideoenc
1767     mss34dsp
1768     pixblockdsp
1769     qpeldsp
1770     qsv
1771     qsvdec
1772     qsvenc
1773     qsvvpp
1774     rangecoder
1775     riffdec
1776     riffenc
1777     rtpdec
1778     rtpenc_chain
1779     rv34dsp
1780     sinewin
1781     snappy
1782     srtp
1783     startcode
1784     texturedsp
1785     texturedspenc
1786     tpeldsp
1787     vaapi_encode
1788     vc1dsp
1789     videodsp
1790     vp3dsp
1791     vp56dsp
1792     vp8dsp
1793     wma_freqs
1794     wmv2dsp
1795 "
1796
1797 CMDLINE_SELECT="
1798     $ARCH_EXT_LIST
1799     $CONFIG_LIST
1800     $HAVE_LIST_CMDLINE
1801     $THREADS_LIST
1802     asm
1803     cross_compile
1804     debug
1805     extra_warnings
1806     logging
1807     lto
1808     optimizations
1809     rpath
1810 "
1811
1812 PATHS_LIST="
1813     bindir
1814     datadir
1815     docdir
1816     incdir
1817     libdir
1818     mandir
1819     prefix
1820     shlibdir
1821 "
1822
1823 CMDLINE_SET="
1824     $PATHS_LIST
1825     ar
1826     arch
1827     as
1828     cc
1829     objcc
1830     cpu
1831     cross_prefix
1832     custom_allocator
1833     dep_cc
1834     env
1835     extra_version
1836     host_cc
1837     host_cflags
1838     host_extralibs
1839     host_ld
1840     host_ldflags
1841     host_os
1842     ignore_tests
1843     ld
1844     logfile
1845     malloc_prefix
1846     nm
1847     optflags
1848     pkg_config
1849     pkg_config_flags
1850     samples
1851     sysinclude
1852     sysroot
1853     target_exec
1854     target_os
1855     target_path
1856     target_samples
1857     toolchain
1858     x86asmexe
1859 "
1860
1861 CMDLINE_APPEND="
1862     extra_cflags
1863     extra_objcflags
1864     host_cppflags
1865 "
1866
1867 # code dependency declarations
1868
1869 # architecture extensions
1870
1871 armv5te_deps="arm"
1872 armv6_deps="arm"
1873 armv6t2_deps="arm"
1874 armv8_deps="aarch64"
1875 neon_deps_any="aarch64 arm"
1876 intrinsics_neon_deps="neon"
1877 vfp_deps_any="aarch64 arm"
1878 vfpv3_deps="vfp"
1879
1880 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1881
1882 altivec_deps="ppc"
1883 dcbzl_deps="ppc"
1884 ldbrx_deps="ppc"
1885 ppc4xx_deps="ppc"
1886 vsx_deps="altivec"
1887 power8_deps="vsx"
1888
1889 loongson_deps="mips"
1890 mips32r1_deps="mips32"
1891 mips32r2_deps="mips32"
1892 mips32r6_deps="mips32"
1893 mips64r1_deps="mips64"
1894 mips64r2_deps="mips64"
1895 mips64r6_deps="mips64"
1896
1897 vis_deps="sparc"
1898
1899 cpunop_deps="i686"
1900 x86_64_select="i686"
1901 x86_64_suggest="fast_cmov"
1902
1903 amd3dnow_deps="mmx"
1904 amd3dnowext_deps="amd3dnow"
1905 i686_deps="x86"
1906 mmx_deps="x86"
1907 mmxext_deps="mmx"
1908 sse_deps="mmxext"
1909 sse2_deps="sse"
1910 sse3_deps="sse2"
1911 ssse3_deps="sse3"
1912 sse4_deps="ssse3"
1913 sse42_deps="sse4"
1914 avx_deps="sse42"
1915 xop_deps="avx"
1916 fma3_deps="avx"
1917 fma4_deps="avx"
1918 avx2_deps="avx"
1919
1920 mmx_external_deps="x86asm"
1921 mmx_inline_deps="inline_asm x86"
1922 mmx_suggest="mmx_external mmx_inline"
1923
1924 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1925     eval dep=\$${ext}_deps
1926     eval ${ext}_external_deps='"${dep}_external"'
1927     eval ${ext}_inline_deps='"${dep}_inline"'
1928     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1929 done
1930
1931 aligned_stack_if_any="aarch64 ppc x86"
1932 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1933 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1934 fast_unaligned_if_any="aarch64 ppc x86"
1935 simd_align_16_if_any="altivec neon sse"
1936 simd_align_32_if_any="avx"
1937
1938 # system capabilities
1939 symver_if_any="symver_asm_label symver_gnu_asm"
1940 valgrind_backtrace_conflict="optimizations"
1941 valgrind_backtrace_deps="valgrind_valgrind_h"
1942
1943 # threading support
1944 atomics_gcc_if="sync_val_compare_and_swap"
1945 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1946 atomics_win32_if="MemoryBarrier"
1947 atomics_native_if_any="$ATOMICS_LIST"
1948 w32threads_deps="atomics_native"
1949 threads_if_any="$THREADS_LIST"
1950
1951 # subsystems
1952 cbs_h264_select="cbs golomb"
1953 cbs_h265_select="cbs golomb"
1954 cbs_mpeg2_select="cbs"
1955 dct_select="rdft"
1956 dirac_parse_select="golomb"
1957 error_resilience_select="me_cmp"
1958 faandct_deps="faan"
1959 faandct_select="fdctdsp"
1960 faanidct_deps="faan"
1961 faanidct_select="idctdsp"
1962 h264dsp_select="startcode"
1963 hevcparse_select="golomb"
1964 intrax8_select="blockdsp idctdsp"
1965 mdct_select="fft"
1966 rdft_select="fft"
1967 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1968 mpeg_er_select="error_resilience"
1969 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1970 mpegaudiodsp_select="dct"
1971 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1972 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1973 vc1dsp_select="h264chroma qpeldsp startcode"
1974
1975 # decoders / encoders
1976 aac_decoder_select="adts_header imdct15 mdct sinewin"
1977 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1978 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1979 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1980 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1981 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1982 adpcm_g722_decoder_select="g722dsp"
1983 adpcm_g722_encoder_select="g722dsp"
1984 aic_decoder_select="golomb idctdsp"
1985 alac_encoder_select="lpc"
1986 als_decoder_select="bswapdsp"
1987 amrnb_decoder_select="lsp"
1988 amrwb_decoder_select="lsp"
1989 amv_decoder_select="sp5x_decoder"
1990 ape_decoder_select="bswapdsp"
1991 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1992 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1993 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1994 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1995 atrac1_decoder_select="mdct sinewin"
1996 atrac3_decoder_select="mdct"
1997 atrac3p_decoder_select="mdct sinewin"
1998 bink_decoder_select="blockdsp hpeldsp"
1999 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2000 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2001 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2002 clearvideo_decoder_select="idctdsp"
2003 cllc_decoder_select="bswapdsp"
2004 comfortnoise_encoder_select="lpc"
2005 cook_decoder_select="audiodsp mdct sinewin"
2006 cscd_decoder_select="lzo"
2007 cscd_decoder_suggest="zlib"
2008 dca_decoder_select="fmtconvert mdct"
2009 dds_decoder_select="texturedsp"
2010 dnxhd_decoder_select="blockdsp idctdsp"
2011 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2012 dvvideo_decoder_select="dvprofile idctdsp"
2013 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2014 dxa_decoder_deps="zlib"
2015 dxv_decoder_select="lzf texturedsp"
2016 eac3_decoder_select="ac3_decoder"
2017 eac3_encoder_select="ac3_encoder"
2018 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2019 eatgq_decoder_select="aandcttables idctdsp"
2020 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2021 exr_decoder_deps="zlib"
2022 ffv1_decoder_select="rangecoder"
2023 ffv1_encoder_select="rangecoder"
2024 ffvhuff_decoder_select="huffyuv_decoder"
2025 ffvhuff_encoder_select="huffyuv_encoder"
2026 fic_decoder_select="golomb"
2027 flac_decoder_select="flacdsp"
2028 flac_encoder_select="bswapdsp flacdsp lpc"
2029 flashsv_decoder_deps="zlib"
2030 flashsv_encoder_deps="zlib"
2031 flashsv2_decoder_deps="zlib"
2032 flv_decoder_select="h263_decoder"
2033 flv_encoder_select="h263_encoder"
2034 fourxm_decoder_select="blockdsp bswapdsp"
2035 fraps_decoder_select="bswapdsp huffman"
2036 g2m_decoder_deps="zlib"
2037 g2m_decoder_select="blockdsp idctdsp jpegtables"
2038 h261_decoder_select="mpeg_er mpegvideo"
2039 h261_encoder_select="aandcttables mpegvideoenc"
2040 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2041 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2042 h263i_decoder_select="h263_decoder"
2043 h263p_encoder_select="h263_encoder"
2044 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2045 h264_decoder_suggest="error_resilience"
2046 hap_decoder_select="snappy texturedsp"
2047 hap_encoder_deps="libsnappy"
2048 hap_encoder_select="texturedspenc"
2049 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2050 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2051 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2052 iac_decoder_select="imc_decoder"
2053 imc_decoder_select="bswapdsp fft mdct sinewin"
2054 indeo3_decoder_select="hpeldsp"
2055 indeo4_decoder_select="ividsp"
2056 indeo5_decoder_select="ividsp"
2057 interplay_video_decoder_select="hpeldsp"
2058 jpegls_decoder_select="mjpeg_decoder"
2059 jv_decoder_select="blockdsp"
2060 lagarith_decoder_select="huffyuvdsp"
2061 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2062 magicyuv_decoder_select="huffyuvdsp"
2063 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2064 metasound_decoder_select="lsp mdct sinewin"
2065 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2066 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2067 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2068 mjpegb_decoder_select="mjpeg_decoder"
2069 mlp_decoder_select="mlp_parser"
2070 motionpixels_decoder_select="bswapdsp"
2071 mp1_decoder_select="mpegaudio"
2072 mp1float_decoder_select="mpegaudio"
2073 mp2_decoder_select="mpegaudio"
2074 mp2float_decoder_select="mpegaudio"
2075 mp3_decoder_select="mpegaudio"
2076 mp3adu_decoder_select="mpegaudio"
2077 mp3adufloat_decoder_select="mpegaudio"
2078 mp3float_decoder_select="mpegaudio"
2079 mp3on4_decoder_select="mpegaudio"
2080 mp3on4float_decoder_select="mpegaudio"
2081 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2082 mpc8_decoder_select="mpegaudiodsp"
2083 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2084 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2085 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2086 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2087 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2088 mpeg4_encoder_select="h263_encoder"
2089 msa1_decoder_select="mss34dsp"
2090 msmpeg4v1_decoder_select="h263_decoder"
2091 msmpeg4v2_decoder_select="h263_decoder"
2092 msmpeg4v2_encoder_select="h263_encoder"
2093 msmpeg4v3_decoder_select="h263_decoder"
2094 msmpeg4v3_encoder_select="h263_encoder"
2095 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2096 mts2_decoder_select="mss34dsp"
2097 mxpeg_decoder_select="mjpeg_decoder"
2098 nellymoser_decoder_select="mdct sinewin"
2099 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2100 nuv_decoder_select="idctdsp lzo"
2101 on2avc_decoder_select="mdct"
2102 opus_decoder_deps="avresample"
2103 opus_decoder_select="imdct15"
2104 png_decoder_deps="zlib"
2105 png_encoder_deps="zlib"
2106 png_encoder_select="huffyuvencdsp"
2107 prores_decoder_select="idctdsp"
2108 prores_encoder_select="fdctdsp"
2109 qcelp_decoder_select="lsp"
2110 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2111 ra_144_encoder_select="audio_frame_queue lpc"
2112 ralf_decoder_select="golomb"
2113 rscc_decoder_deps="zlib"
2114 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2115 rv10_encoder_select="h263_encoder"
2116 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2117 rv20_encoder_select="h263_encoder"
2118 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2119 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2120 screenpresso_decoder_deps="zlib"
2121 sipr_decoder_select="lsp"
2122 sp5x_decoder_select="mjpeg_decoder"
2123 svq1_decoder_select="hpeldsp"
2124 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2125 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2126 svq3_decoder_suggest="zlib"
2127 tak_decoder_select="audiodsp"
2128 tdsc_decoder_deps="zlib"
2129 tdsc_decoder_select="mjpeg_decoder"
2130 theora_decoder_select="vp3_decoder"
2131 thp_decoder_select="mjpeg_decoder"
2132 tiff_decoder_suggest="zlib"
2133 tiff_encoder_suggest="zlib"
2134 truehd_decoder_select="mlp_decoder"
2135 truemotion2_decoder_select="bswapdsp"
2136 truespeech_decoder_select="bswapdsp"
2137 tscc_decoder_deps="zlib"
2138 txd_decoder_select="texturedsp"
2139 twinvq_decoder_select="mdct lsp sinewin"
2140 utvideo_decoder_select="bswapdsp huffyuvdsp"
2141 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2142 vble_decoder_select="huffyuvdsp"
2143 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2144 vc1image_decoder_select="vc1_decoder"
2145 vorbis_decoder_select="mdct"
2146 vorbis_encoder_select="mdct"
2147 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2148 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2149 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2150 vp6a_decoder_select="vp6_decoder"
2151 vp6f_decoder_select="vp6_decoder"
2152 vp7_decoder_select="h264pred videodsp vp8dsp"
2153 vp8_decoder_select="h264pred videodsp vp8dsp"
2154 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2155 webp_decoder_select="vp8_decoder"
2156 wmapro_decoder_select="mdct sinewin wma_freqs"
2157 wmav1_decoder_select="mdct sinewin wma_freqs"
2158 wmav1_encoder_select="mdct sinewin wma_freqs"
2159 wmav2_decoder_select="mdct sinewin wma_freqs"
2160 wmav2_encoder_select="mdct sinewin wma_freqs"
2161 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2162 wmv1_decoder_select="h263_decoder"
2163 wmv1_encoder_select="h263_encoder"
2164 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2165 wmv2_encoder_select="h263_encoder wmv2dsp"
2166 wmv3_decoder_select="vc1_decoder"
2167 wmv3image_decoder_select="wmv3_decoder"
2168 zerocodec_decoder_deps="zlib"
2169 zlib_decoder_deps="zlib"
2170 zlib_encoder_deps="zlib"
2171 zmbv_decoder_deps="zlib"
2172 zmbv_encoder_deps="zlib"
2173
2174 # hardware accelerators
2175 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2176 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2177 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2178 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2179
2180 h263_vaapi_hwaccel_deps="vaapi"
2181 h263_vaapi_hwaccel_select="h263_decoder"
2182 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2183 h264_cuvid_hwaccel_select="h264_decoder"
2184 h264_d3d11va_hwaccel_deps="d3d11va"
2185 h264_d3d11va_hwaccel_select="h264_decoder"
2186 h264_d3d11va2_hwaccel_deps="d3d11va"
2187 h264_d3d11va2_hwaccel_select="h264_decoder"
2188 h264_dxva2_hwaccel_deps="dxva2"
2189 h264_dxva2_hwaccel_select="h264_decoder"
2190 h264_mmal_hwaccel_deps="mmal"
2191 h264_qsv_hwaccel_deps="libmfx"
2192 h264_vaapi_hwaccel_deps="vaapi"
2193 h264_vaapi_hwaccel_select="h264_decoder"
2194 h264_vda_hwaccel_deps="vda"
2195 h264_vda_hwaccel_select="h264_decoder"
2196 h264_vda_old_hwaccel_deps="vda"
2197 h264_vda_old_hwaccel_select="h264_decoder"
2198 h264_vdpau_hwaccel_deps="vdpau"
2199 h264_vdpau_hwaccel_select="h264_decoder"
2200 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2201 hevc_cuvid_hwaccel_select="hevc_decoder"
2202 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2203 hevc_d3d11va_hwaccel_select="hevc_decoder"
2204 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2205 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2206 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2207 hevc_dxva2_hwaccel_select="hevc_decoder"
2208 hevc_qsv_hwaccel_deps="libmfx"
2209 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2210 hevc_vaapi_hwaccel_select="hevc_decoder"
2211 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2212 hevc_vdpau_hwaccel_select="hevc_decoder"
2213 mpeg1_vdpau_hwaccel_deps="vdpau"
2214 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2215 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2216 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2217 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2218 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_dxva2_hwaccel_deps="dxva2"
2220 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2221 mpeg2_mmal_hwaccel_deps="mmal"
2222 mpeg2_qsv_hwaccel_deps="libmfx"
2223 mpeg2_vaapi_hwaccel_deps="vaapi"
2224 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2225 mpeg2_vdpau_hwaccel_deps="vdpau"
2226 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2227 mpeg4_vaapi_hwaccel_deps="vaapi"
2228 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2229 mpeg4_vdpau_hwaccel_deps="vdpau"
2230 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2231 vc1_d3d11va_hwaccel_deps="d3d11va"
2232 vc1_d3d11va_hwaccel_select="vc1_decoder"
2233 vc1_d3d11va2_hwaccel_deps="d3d11va"
2234 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2235 vc1_dxva2_hwaccel_deps="dxva2"
2236 vc1_dxva2_hwaccel_select="vc1_decoder"
2237 vc1_mmal_hwaccel_deps="mmal"
2238 vc1_qsv_hwaccel_deps="libmfx"
2239 vc1_vaapi_hwaccel_deps="vaapi"
2240 vc1_vaapi_hwaccel_select="vc1_decoder"
2241 vc1_vdpau_hwaccel_deps="vdpau"
2242 vc1_vdpau_hwaccel_select="vc1_decoder"
2243 vp8_qsv_hwaccel_deps="libmfx"
2244 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2245 vp8_vaapi_hwaccel_select="vp8_decoder"
2246 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2247 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2248 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2249 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2250 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2251
2252 # hardware-accelerated codecs
2253 nvenc_deps_any="libdl LoadLibrary"
2254 omx_deps="libdl pthreads"
2255 omx_rpi_select="omx"
2256 qsv_deps="libmfx"
2257 qsvdec_select="qsv"
2258 qsvenc_select="qsv"
2259 qsvvpp_select="qsv"
2260 vaapi_encode_deps="vaapi"
2261
2262 hwupload_cuda_filter_deps="cuda"
2263 scale_npp_filter_deps="cuda libnpp"
2264
2265 h264_mmal_decoder_deps="mmal"
2266 h264_nvenc_encoder_deps="nvenc"
2267 h264_omx_encoder_deps="omx"
2268 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2269 h264_qsv_encoder_select="qsvenc"
2270 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2271 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2272 hevc_nvenc_encoder_deps="nvenc"
2273 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2274 hevc_qsv_encoder_select="hevcparse qsvenc"
2275 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2276 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2277 mjpeg_qsv_encoder_deps="libmfx"
2278 mjpeg_qsv_encoder_select="qsvenc"
2279 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2280 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2281 mpeg2_mmal_decoder_deps="mmal"
2282 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2283 mpeg2_qsv_encoder_select="qsvenc"
2284 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2285 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2286 mpeg4_omx_encoder_deps="omx"
2287 vc1_mmal_decoder_deps="mmal"
2288 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2289 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2290 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2291 vp8_vaapi_encoder_select="vaapi_encode"
2292 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2293 vp9_vaapi_encoder_select="vaapi_encode"
2294
2295 nvenc_h264_encoder_select="h264_nvenc_encoder"
2296 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2297
2298 # parsers
2299 aac_parser_select="adts_header"
2300 h264_parser_select="golomb h264dsp h264parse"
2301 hevc_parser_select="hevcparse"
2302 mpegaudio_parser_select="mpegaudioheader"
2303 mpegvideo_parser_select="mpegvideo"
2304 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2305 vc1_parser_select="vc1dsp"
2306
2307 # bitstream_filters
2308 aac_adtstoasc_bsf_select="adts_header"
2309 h264_metadata_bsf_select="cbs_h264"
2310 h264_redundant_pps_bsf_select="cbs_h264"
2311 hevc_metadata_bsf_select="cbs_h265"
2312 mjpeg2jpeg_bsf_select="jpegtables"
2313 mpeg2_metadata_bsf_select="cbs_mpeg2"
2314 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2315
2316 # external libraries
2317 avisynth_deps="LoadLibrary"
2318 avxsynth_deps="libdl"
2319 avisynth_demuxer_deps_any="avisynth avxsynth"
2320 avisynth_demuxer_select="riffdec"
2321 libdcadec_decoder_deps="libdcadec"
2322 libfaac_encoder_deps="libfaac"
2323 libfaac_encoder_select="audio_frame_queue"
2324 libfdk_aac_decoder_deps="libfdk_aac"
2325 libfdk_aac_encoder_deps="libfdk_aac"
2326 libfdk_aac_encoder_select="audio_frame_queue"
2327 libgsm_decoder_deps="libgsm"
2328 libgsm_encoder_deps="libgsm"
2329 libgsm_ms_decoder_deps="libgsm"
2330 libgsm_ms_encoder_deps="libgsm"
2331 libilbc_decoder_deps="libilbc"
2332 libilbc_encoder_deps="libilbc"
2333 libkvazaar_encoder_deps="libkvazaar"
2334 libmp3lame_encoder_deps="libmp3lame"
2335 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2336 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2337 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2338 libopencore_amrnb_encoder_select="audio_frame_queue"
2339 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2340 libopenh264_decoder_deps="libopenh264"
2341 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2342 libopenh264_encoder_deps="libopenh264"
2343 libopenjpeg_decoder_deps="libopenjpeg"
2344 libopenjpeg_encoder_deps="libopenjpeg"
2345 libopus_decoder_deps="libopus"
2346 libopus_encoder_deps="libopus"
2347 libopus_encoder_select="audio_frame_queue"
2348 libschroedinger_decoder_deps="libschroedinger"
2349 libschroedinger_encoder_deps="libschroedinger"
2350 libspeex_decoder_deps="libspeex"
2351 libspeex_encoder_deps="libspeex"
2352 libspeex_encoder_select="audio_frame_queue"
2353 libtheora_encoder_deps="libtheora"
2354 libtwolame_encoder_deps="libtwolame"
2355 libvo_aacenc_encoder_deps="libvo_aacenc"
2356 libvo_aacenc_encoder_select="audio_frame_queue"
2357 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2358 libvorbis_encoder_deps="libvorbis"
2359 libvorbis_encoder_select="audio_frame_queue"
2360 libvpx_vp8_decoder_deps="libvpx"
2361 libvpx_vp8_encoder_deps="libvpx"
2362 libvpx_vp9_decoder_deps="libvpx"
2363 libvpx_vp9_encoder_deps="libvpx"
2364 libwavpack_encoder_deps="libwavpack"
2365 libwavpack_encoder_select="audio_frame_queue"
2366 libwebp_encoder_deps="libwebp"
2367 libx262_encoder_deps="libx262"
2368 libx264_encoder_deps="libx264"
2369 libx265_encoder_deps="libx265"
2370 libxavs_encoder_deps="libxavs"
2371 libxvid_encoder_deps="libxvid mkstemp"
2372
2373 # demuxers / muxers
2374 ac3_demuxer_select="ac3_parser"
2375 asf_demuxer_select="riffdec"
2376 asf_muxer_select="riffenc"
2377 asf_stream_muxer_select="asf_muxer"
2378 avi_demuxer_select="iso_media riffdec"
2379 avi_muxer_select="riffenc"
2380 caf_demuxer_select="iso_media riffdec"
2381 dash_muxer_select="mp4_muxer"
2382 dirac_demuxer_select="dirac_parser"
2383 dv_demuxer_select="dvprofile"
2384 dv_muxer_select="dvprofile"
2385 dxa_demuxer_select="riffdec"
2386 eac3_demuxer_select="ac3_parser"
2387 f4v_muxer_select="mov_muxer"
2388 flac_demuxer_select="flac_parser"
2389 hds_muxer_select="flv_muxer"
2390 hls_muxer_select="mpegts_muxer"
2391 ipod_muxer_select="mov_muxer"
2392 ismv_muxer_select="mov_muxer"
2393 matroska_audio_muxer_select="matroska_muxer"
2394 matroska_demuxer_select="iso_media riffdec"
2395 matroska_demuxer_suggest="bzlib lzo zlib"
2396 matroska_muxer_select="iso_media riffenc"
2397 mmf_muxer_select="riffenc"
2398 mov_demuxer_select="iso_media riffdec"
2399 mov_demuxer_suggest="zlib"
2400 mov_muxer_select="iso_media riffenc rtpenc_chain"
2401 mp3_demuxer_select="mpegaudio_parser"
2402 mp3_muxer_select="mpegaudioheader"
2403 mp4_muxer_select="mov_muxer"
2404 mpegts_demuxer_select="iso_media"
2405 mpegts_muxer_select="adts_muxer latm_muxer"
2406 mpegtsraw_demuxer_select="mpegts_demuxer"
2407 mxf_d10_muxer_select="mxf_muxer"
2408 nut_muxer_select="riffenc"
2409 nuv_demuxer_select="riffdec"
2410 oga_muxer_select="ogg_muxer"
2411 ogg_demuxer_select="dirac_parse"
2412 opus_muxer_select="ogg_muxer"
2413 psp_muxer_select="mov_muxer"
2414 rtp_demuxer_select="sdp_demuxer"
2415 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2416 rtsp_demuxer_select="http_protocol rtpdec"
2417 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2418 sap_demuxer_select="sdp_demuxer"
2419 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2420 sdp_demuxer_select="rtpdec"
2421 smoothstreaming_muxer_select="ismv_muxer"
2422 spdif_demuxer_select="adts_header"
2423 spdif_muxer_select="adts_header"
2424 spx_muxer_select="ogg_muxer"
2425 swf_demuxer_suggest="zlib"
2426 tak_demuxer_select="tak_parser"
2427 tg2_muxer_select="mov_muxer"
2428 tgp_muxer_select="mov_muxer"
2429 w64_demuxer_select="wav_demuxer"
2430 wav_demuxer_select="riffdec"
2431 wav_muxer_select="riffenc"
2432 webm_muxer_select="iso_media riffenc"
2433 wtv_demuxer_select="mpegts_demuxer riffdec"
2434 xmv_demuxer_select="riffdec"
2435 xwma_demuxer_select="riffdec"
2436
2437 # indevs / outdevs
2438 alsa_indev_deps="alsa"
2439 alsa_outdev_deps="alsa"
2440 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2441 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2442 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2443 dv1394_indev_deps="dv1394"
2444 dv1394_indev_select="dv_demuxer"
2445 fbdev_indev_deps="linux_fb_h"
2446 jack_indev_deps="libjack"
2447 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2448 libcdio_indev_deps="libcdio"
2449 libdc1394_indev_deps="libdc1394"
2450 oss_indev_deps_any="sys_soundcard_h"
2451 oss_outdev_deps_any="sys_soundcard_h"
2452 pulse_indev_deps="libpulse"
2453 sndio_indev_deps="sndio"
2454 sndio_outdev_deps="sndio"
2455 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2456 vfwcap_indev_deps="vfw32 vfwcap_defines"
2457 xcbgrab_indev_deps="libxcb libxcb_shape"
2458 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2459
2460 # protocols
2461 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2462 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2463 ffrtmpcrypt_protocol_select="tcp_protocol"
2464 ffrtmphttp_protocol_conflict="librtmp_protocol"
2465 ffrtmphttp_protocol_select="http_protocol"
2466 gopher_protocol_select="network"
2467 http_protocol_select="tcp_protocol"
2468 http_protocol_suggest="zlib"
2469 httpproxy_protocol_select="tcp_protocol"
2470 httpproxy_protocol_suggest="zlib"
2471 https_protocol_select="tls_protocol"
2472 https_protocol_suggest="zlib"
2473 icecast_protocol_select="http_protocol"
2474 librtmp_protocol_deps="librtmp"
2475 librtmpe_protocol_deps="librtmp"
2476 librtmps_protocol_deps="librtmp"
2477 librtmpt_protocol_deps="librtmp"
2478 librtmpte_protocol_deps="librtmp"
2479 mmsh_protocol_select="http_protocol"
2480 mmst_protocol_select="network"
2481 rtmp_protocol_conflict="librtmp_protocol"
2482 rtmp_protocol_select="tcp_protocol"
2483 rtmp_protocol_suggest="zlib"
2484 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2485 rtmpe_protocol_suggest="zlib"
2486 rtmps_protocol_conflict="librtmp_protocol"
2487 rtmps_protocol_select="tls_protocol"
2488 rtmps_protocol_suggest="zlib"
2489 rtmpt_protocol_select="ffrtmphttp_protocol"
2490 rtmpt_protocol_suggest="zlib"
2491 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2492 rtmpte_protocol_suggest="zlib"
2493 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2494 rtmpts_protocol_suggest="zlib"
2495 rtp_protocol_select="udp_protocol"
2496 sctp_protocol_deps="struct_sctp_event_subscribe"
2497 sctp_protocol_select="network"
2498 srtp_protocol_select="rtp_protocol srtp"
2499 tcp_protocol_select="network"
2500 tls_protocol_deps_any="gnutls openssl"
2501 tls_protocol_select="tcp_protocol"
2502 udp_protocol_select="network"
2503 unix_protocol_deps="sys_un_h"
2504 unix_protocol_select="network"
2505
2506 # filters
2507 asyncts_filter_deps="avresample"
2508 blackframe_filter_deps="gpl"
2509 boxblur_filter_deps="gpl"
2510 bs2b_filter_deps="libbs2b"
2511 cropdetect_filter_deps="gpl"
2512 deinterlace_qsv_filter_deps="libmfx"
2513 deinterlace_vaapi_filter_deps="vaapi"
2514 delogo_filter_deps="gpl"
2515 drawtext_filter_deps="libfreetype"
2516 drawtext_filter_suggest="libfontconfig"
2517 frei0r_filter_deps="frei0r libdl"
2518 frei0r_src_filter_deps="frei0r libdl"
2519 hdcd_filter_deps="libhdcd"
2520 hqdn3d_filter_deps="gpl"
2521 interlace_filter_deps="gpl"
2522 movie_filter_deps="avcodec avformat"
2523 ocv_filter_deps="libopencv"
2524 overlay_qsv_filter_deps="libmfx"
2525 overlay_qsv_filter_select="qsvvpp"
2526 resample_filter_deps="avresample"
2527 scale_filter_deps="swscale"
2528 scale_qsv_filter_deps="libmfx"
2529 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2530 vpp_qsv_filter_deps="libmfx"
2531 vpp_qsv_filter_select="qsvvpp"
2532
2533 # examples
2534 decode_audio_example_deps="avcodec avutil"
2535 decode_video_example_deps="avcodec avutil"
2536 encode_audio_example_deps="avcodec avutil"
2537 encode_video_example_deps="avcodec avutil"
2538 filter_audio_example_deps="avfilter avutil"
2539 metadata_example_deps="avformat avutil"
2540 output_example_deps="avcodec avformat avresample avutil swscale"
2541 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2542 transcode_aac_example_deps="avcodec avformat avresample"
2543
2544 # EXTRALIBS_LIST
2545 cpu_init_extralibs="pthreads_extralibs"
2546 cws2fws_extralibs="zlib_extralibs"
2547
2548 # libraries, in linking order
2549 avcodec_deps="avutil"
2550 avcodec_select="null_bsf"
2551 avdevice_deps="avformat avcodec avutil"
2552 avfilter_deps="avutil"
2553 avformat_deps="avcodec avutil"
2554 avformat_suggest="network"
2555 avresample_deps="avutil"
2556 swscale_deps="avutil"
2557
2558 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2559 avdevice_extralibs="libm_extralibs"
2560 avformat_extralibs="libm_extralibs"
2561 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2562 avresample_extralibs="libm_extralibs"
2563 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2564 swscale_extralibs="libm_extralibs"
2565
2566 # programs
2567 avconv_deps="avcodec avfilter avformat avresample swscale"
2568 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2569                fps_filter null_filter resample_filter scale_filter
2570                trim_filter"
2571 avconv_suggest="psapi shell32"
2572 avplay_deps="avcodec avfilter avformat avresample sdl"
2573 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2574 avplay_suggest="shell32"
2575 avprobe_deps="avcodec avformat"
2576 avprobe_suggest="shell32"
2577
2578 # documentation
2579 pod2man_deps="doc"
2580 texi2html_deps="doc"
2581
2582 # default parameters
2583
2584 logfile="avbuild/config.log"
2585
2586 # installation paths
2587 prefix_default="/usr/local"
2588 bindir_default='${prefix}/bin'
2589 datadir_default='${prefix}/share/avconv'
2590 docdir_default='${prefix}/share/doc/libav'
2591 incdir_default='${prefix}/include'
2592 libdir_default='${prefix}/lib'
2593 mandir_default='${prefix}/share/man'
2594 shlibdir_default="$libdir_default"
2595
2596 # toolchain
2597 ar_default="ar"
2598 cc_default="gcc"
2599 host_cc_default="gcc"
2600 x86asmexe_default="nasm"
2601 ln_s="ln -s -f"
2602 nm_default="nm -g"
2603 pkg_config_default=pkg-config
2604 ranlib="ranlib"
2605 strip="strip"
2606 version_script='--version-script'
2607
2608 # machine
2609 arch_default=$(uname -m)
2610 cpu="generic"
2611 intrinsics="none"
2612
2613 # OS
2614 target_os_default=$(tolower $(uname -s))
2615 host_os=$target_os_default
2616
2617 # configurable options
2618 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2619
2620 enable asm
2621 enable debug
2622 enable doc
2623 enable faan faandct faanidct
2624 enable optimizations
2625 enable safe_bitstream_reader
2626 enable static
2627 enable swscale_alpha
2628 enable valgrind_backtrace
2629
2630 # By default, enable only those hwaccels that have no external dependencies.
2631 enable d3d11va dxva2 vda vdpau
2632
2633 # internal components are enabled by default
2634 enable $EXTRALIBS_LIST
2635
2636 # Avoid external, non-system, libraries getting enabled by dependency resolution
2637 disable $EXTERNAL_LIBRARY_LIST
2638
2639 # build settings
2640 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2641 LIBPREF="lib"
2642 LIBSUF=".a"
2643 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2644 SLIBPREF="lib"
2645 SLIBSUF=".so"
2646 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2647 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2648 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2649 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2650 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2651 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2652 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2653
2654 asflags_filter=echo
2655 cflags_filter=echo
2656 ldflags_filter=echo
2657
2658 AS_C='-c'
2659 AS_O='-o $@'
2660 CC_C='-c'
2661 CC_E='-E -o $@'
2662 CC_O='-o $@'
2663 OBJCC_C='-c'
2664 OBJCC_E='-E -o $@'
2665 OBJCC_O='-o $@'
2666 X86ASM_O='-o $@'
2667 LD_O='-o $@'
2668 LD_LIB='-l%'
2669 LD_PATH='-L'
2670 HOSTCC_C='-c'
2671 HOSTCC_E='-E -o $@'
2672 HOSTCC_O='-o $@'
2673 HOSTLD_O='-o $@'
2674
2675 host_extralibs='-lm'
2676 host_cflags_filter=echo
2677 host_ldflags_filter=echo
2678
2679 target_path='$(CURDIR)'
2680
2681 # since the object filename is not given with the -MM flag, the compiler
2682 # is only able to print the basename, and we must add the path ourselves
2683 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2684 DEPFLAGS='-MM'
2685
2686 mkdir -p avbuild
2687
2688 # find source path
2689 if test -f configure; then
2690     source_path=.
2691 else
2692     source_path=$(cd $(dirname "$0"); pwd)
2693     echo "$source_path" | grep -q '[[:blank:]]' &&
2694         die "Out of tree builds are impossible with whitespace in source path."
2695     test -e "$source_path/config.h" &&
2696         die "Out of tree builds are impossible with config.h in source dir."
2697 fi
2698
2699 for v in "$@"; do
2700     r=${v#*=}
2701     l=${v%"$r"}
2702     r=$(sh_quote "$r")
2703     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2704 done
2705
2706 find_things(){
2707     thing=$1
2708     pattern=$2
2709     file=$source_path/$3
2710     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2711 }
2712
2713 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2714 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2715 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2716 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2717 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2718 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2719 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2720 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2721 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2722
2723 find_things_extern(){
2724     thing=$1
2725     pattern=$2
2726     file=$source_path/$3
2727     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2728 }
2729
2730 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2731 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2732
2733 AVCODEC_COMPONENTS_LIST="
2734     $BSF_LIST
2735     $DECODER_LIST
2736     $ENCODER_LIST
2737     $HWACCEL_LIST
2738     $PARSER_LIST
2739 "
2740
2741 AVDEVICE_COMPONENTS_LIST="
2742     $INDEV_LIST
2743     $OUTDEV_LIST
2744 "
2745
2746 AVFILTER_COMPONENTS_LIST="
2747     $FILTER_LIST
2748 "
2749
2750 AVFORMAT_COMPONENTS_LIST="
2751     $DEMUXER_LIST
2752     $MUXER_LIST
2753     $PROTOCOL_LIST
2754 "
2755
2756 ALL_COMPONENTS="
2757     $AVCODEC_COMPONENTS_LIST
2758     $AVDEVICE_COMPONENTS_LIST
2759     $AVFILTER_COMPONENTS_LIST
2760     $AVFORMAT_COMPONENTS_LIST
2761 "
2762
2763 for n in $COMPONENT_LIST; do
2764     v=$(toupper ${n%s})_LIST
2765     eval enable \$$v
2766     eval ${n}_if_any="\$$v"
2767 done
2768
2769 enable $ARCH_EXT_LIST
2770
2771 die_unknown(){
2772     echo "Unknown option \"$1\"."
2773     echo "See $0 --help for available options."
2774     exit 1
2775 }
2776
2777 print_3_columns() {
2778     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2779 }
2780
2781 show_list() {
2782     suffix=_$1
2783     shift
2784     echo $* | sed s/$suffix//g | print_3_columns
2785     exit 0
2786 }
2787
2788 for opt do
2789     optval="${opt#*=}"
2790     case "$opt" in
2791         --extra-ldflags=*)
2792             add_ldflags $optval
2793         ;;
2794         --extra-ldexeflags=*)
2795             add_ldexeflags $optval
2796         ;;
2797         --extra-ldsoflags=*)
2798             add_ldsoflags $optval
2799         ;;
2800         --extra-libs=*)
2801             add_extralibs $optval
2802         ;;
2803         --disable-devices)
2804             disable $INDEV_LIST $OUTDEV_LIST
2805         ;;
2806         --enable-debug=*)
2807             debuglevel="$optval"
2808         ;;
2809         --disable-programs)
2810             disable $PROGRAM_LIST
2811         ;;
2812         --disable-everything)
2813             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2814         ;;
2815         --disable-all)
2816             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2817             disable $LIBRARY_LIST $PROGRAM_LIST doc
2818         ;;
2819         --enable-*=*|--disable-*=*)
2820             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2821             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2822             eval list=\$$(toupper $thing)_LIST
2823             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2824             $action $(filter "$name" $list)
2825         ;;
2826         --enable-yasm|--disable-yasm)
2827             warn "The ${opt} option is only provided for compatibility and will be\n"\
2828                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2829             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2830         ;;
2831         --enable-?*|--disable-?*)
2832             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2833             if is_in $option $COMPONENT_LIST; then
2834                 test $action = disable && action=unset
2835                 eval $action \$$(toupper ${option%s})_LIST
2836             elif is_in $option $CMDLINE_SELECT; then
2837                 $action $option
2838             else
2839                 die_unknown $opt
2840             fi
2841         ;;
2842         --list-*)
2843             NAME="${opt#--list-}"
2844             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2845             NAME=${NAME%s}
2846             eval show_list $NAME \$$(toupper $NAME)_LIST
2847         ;;
2848         --help|-h) show_help
2849         ;;
2850         --quiet|-q) quiet=yes
2851         ;;
2852         *)
2853             optname="${opt%%=*}"
2854             optname="${optname#--}"
2855             optname=$(echo "$optname" | sed 's/-/_/g')
2856             if is_in $optname $CMDLINE_SET; then
2857                 eval $optname='$optval'
2858             elif is_in $optname $CMDLINE_APPEND; then
2859                 append $optname "$optval"
2860             else
2861                 die_unknown $opt
2862             fi
2863         ;;
2864     esac
2865 done
2866
2867 for e in $env; do
2868     eval "export $e"
2869 done
2870
2871 disabled logging && logfile=/dev/null
2872
2873 # Die early if licensing-related configure options are incompatible.
2874 die_license_disabled() {
2875     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2876 }
2877
2878 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2879 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2880 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2881
2882 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2883
2884 enabled_all gnutls openssl &&
2885     die "GnuTLS and OpenSSL must not be enabled at the same time."
2886
2887 # Disable all the library-specific components if the library itself
2888 # is disabled, see AVCODEC_LIST and following _LIST variables.
2889
2890 disable_components(){
2891     disabled ${1} && disable $(
2892         eval components="\$$(toupper ${1})_COMPONENTS"
2893         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2894     )
2895 }
2896
2897 map 'disable_components $v' $LIBRARY_LIST
2898
2899 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2900 set >> $logfile
2901
2902 case "$toolchain" in
2903     *-asan)
2904         cc_default="${toolchain%-asan}"
2905         add_cflags  -fsanitize=address
2906         add_ldflags -fsanitize=address
2907     ;;
2908     *-msan)
2909         cc_default="${toolchain%-msan}"
2910         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2911         add_ldflags -fsanitize=memory
2912     ;;
2913     *-tsan)
2914         cc_default="${toolchain%-tsan}"
2915         add_cflags  -fsanitize=thread -fPIE
2916         add_ldflags -fsanitize=thread -pie
2917         case "$toolchain" in
2918             gcc-tsan)
2919                 add_cflags  -fPIC
2920                 add_ldflags -fPIC
2921                 ;;
2922         esac
2923     ;;
2924     *-usan)
2925         cc_default="${toolchain%-usan}"
2926         add_cflags  -fsanitize=undefined
2927         add_ldflags -fsanitize=undefined
2928         case "$toolchain" in
2929             clang-usan)
2930                 add_cflags -O1
2931                 ;;
2932         esac
2933     ;;
2934     valgrind-*)
2935         target_exec_default="valgrind"
2936         case "$toolchain" in
2937             valgrind-massif)
2938                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2939                 ;;
2940             valgrind-memcheck)
2941                 target_exec_args="--track-origins=yes --leak-check=full"
2942                 ;;
2943         esac
2944     ;;
2945     msvc)
2946         # Check whether the current MSVC version needs the C99 converter.
2947         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2948         # support enough of C99 to build libav. Default to the new
2949         # behaviour if the regexp was unable to match anything, since this
2950         # successfully parses the version number of existing supported
2951         # versions that require the converter (MSVC 2010 and 2012).
2952         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2953         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2954             cc_default="cl"
2955         else
2956             cc_default="c99wrap cl"
2957         fi
2958         ld_default="$source_path/compat/windows/mslink"
2959         nm_default="dumpbin -symbols"
2960         ar_default="lib"
2961         case "$arch" in
2962         arm*)
2963             as_default="armasm"
2964             ;;
2965         esac
2966         target_os_default="win32"
2967         # Use a relative path for TMPDIR. This makes sure all the
2968         # ffconf temp files are written with a relative path, avoiding
2969         # issues with msys/win32 path conversion for MSVC parameters
2970         # such as -Fo<file> or -out:<file>.
2971         TMPDIR=.
2972     ;;
2973     icl)
2974         cc_default="icl"
2975         ld_default="xilink"
2976         nm_default="dumpbin -symbols"
2977         ar_default="xilib"
2978         target_os_default="win32"
2979         TMPDIR=.
2980     ;;
2981     gcov)
2982         add_cflags  -fprofile-arcs -ftest-coverage
2983         add_ldflags -fprofile-arcs -ftest-coverage
2984     ;;
2985     llvm-cov)
2986         add_cflags -fprofile-arcs -ftest-coverage
2987         add_ldflags --coverage
2988     ;;
2989     hardened)
2990         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2991         add_cflags   -fno-strict-overflow -fstack-protector-all
2992         add_ldflags  -Wl,-z,relro -Wl,-z,now
2993     ;;
2994     ?*)
2995         die "Unknown toolchain $toolchain"
2996     ;;
2997 esac
2998
2999 test -n "$cross_prefix" && enable cross_compile
3000
3001 if enabled cross_compile; then
3002     test -n "$arch" && test -n "$target_os" ||
3003         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3004 fi
3005
3006 ar_default="${cross_prefix}${ar_default}"
3007 cc_default="${cross_prefix}${cc_default}"
3008 objcc_default="${cross_prefix}${objcc_default}"
3009 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3010 nm_default="${cross_prefix}${nm_default}"
3011 pkg_config_default="${cross_prefix}${pkg_config_default}"
3012 ranlib="${cross_prefix}${ranlib}"
3013 strip="${cross_prefix}${strip}"
3014
3015 sysinclude_default="${sysroot}/usr/include"
3016
3017 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3018 enabled cross_compile || host_cc_default=$cc
3019 set_default host_cc
3020
3021 if ! $pkg_config --version >/dev/null 2>&1; then
3022     warn "$pkg_config not found, library detection may fail."
3023     pkg_config=false
3024 fi
3025
3026 exesuf() {
3027     case $1 in
3028         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3029     esac
3030 }
3031
3032 EXESUF=$(exesuf $target_os)
3033 HOSTEXESUF=$(exesuf $host_os)
3034
3035 # set temporary file name
3036 : ${TMPDIR:=$TEMPDIR}
3037 : ${TMPDIR:=$TMP}
3038 : ${TMPDIR:=/tmp}
3039
3040 if ! check_cmd mktemp -u XXXXXX; then
3041     # simple replacement for missing mktemp
3042     # NOT SAFE FOR GENERAL USE
3043     mktemp(){
3044         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3045         echo "$tmpname"
3046         mkdir "$tmpname"
3047     }
3048 fi
3049
3050 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3051     die "Unable to create temporary directory in $TMPDIR."
3052
3053 tmpfile(){
3054     tmp="${AVTMPDIR}/test"$2
3055     (set -C; exec > $tmp) 2> /dev/null ||
3056         die "Unable to create temporary file in $AVTMPDIR."
3057     eval $1=$tmp
3058 }
3059
3060 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3061 trap 'exit 2' INT
3062
3063 tmpfile TMPASM .asm
3064 tmpfile TMPC   .c
3065 tmpfile TMPE   $EXESUF
3066 tmpfile TMPH   .h
3067 tmpfile TMPO   .o
3068 tmpfile TMPS   .S
3069 tmpfile TMPSH  .sh
3070 tmpfile TMPV   .ver
3071
3072 unset -f mktemp
3073
3074 chmod +x $TMPE
3075
3076 # make sure we can execute files in $TMPDIR
3077 cat > $TMPSH 2>> $logfile <<EOF
3078 #! /bin/sh
3079 EOF
3080 chmod +x $TMPSH >> $logfile 2>&1
3081 if ! $TMPSH >> $logfile 2>&1; then
3082     cat <<EOF
3083 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3084 variable to another directory and make sure that it is not mounted noexec.
3085 EOF
3086     die "Sanity test failed."
3087 fi
3088
3089 armasm_flags(){
3090     for flag; do
3091         case $flag in
3092             # Filter out MSVC cl.exe options from cflags that shouldn't
3093             # be passed to gas-preprocessor
3094             -M[TD]*)                                            ;;
3095             *)                  echo $flag                      ;;
3096         esac
3097    done
3098 }
3099
3100 cparser_flags(){
3101     for flag; do
3102         case $flag in
3103             -Wno-switch)             echo -Wno-switch-enum ;;
3104             -Wno-format-zero-length) ;;
3105             -Wdisabled-optimization) ;;
3106             -Wno-pointer-sign)       echo -Wno-other ;;
3107             *)                       echo $flag ;;
3108         esac
3109     done
3110 }
3111
3112 msvc_common_flags(){
3113     for flag; do
3114         case $flag in
3115             # In addition to specifying certain flags under the compiler
3116             # specific filters, they must be specified here as well or else the
3117             # generic catch all at the bottom will print the original flag.
3118             -Wall)                ;;
3119             -Wextra)              ;;
3120             -std=c99)             ;;
3121             # Common flags
3122             -fomit-frame-pointer) ;;
3123             -g)                   echo -Z7 ;;
3124             -fno-math-errno)      ;;
3125             -fno-common)          ;;
3126             -fno-signed-zeros)    ;;
3127             -fPIC)                ;;
3128             -mthumb)              ;;
3129             -march=*)             ;;
3130             -lz)                  echo zlib.lib ;;
3131             -lx264)               echo libx264.lib ;;
3132             -l*)                  echo ${flag#-l}.lib ;;
3133             -L*)                  echo -libpath:${flag#-L} ;;
3134             *)                    echo $flag ;;
3135         esac
3136     done
3137 }
3138
3139 msvc_flags(){
3140     msvc_common_flags "$@"
3141     for flag; do
3142         case $flag in
3143             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3144                                        -wd4554 ;;
3145             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3146                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3147                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3148                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3149         esac
3150     done
3151 }
3152
3153 icl_flags(){
3154     msvc_common_flags "$@"
3155     for flag; do
3156         case $flag in
3157             # Despite what Intel's documentation says -Wall, which is supported
3158             # on Windows, does enable remarks so disable them here.
3159             -Wall)                echo $flag -Qdiag-disable:remark ;;
3160             -std=c99)             echo -Qstd=c99 ;;
3161         esac
3162     done
3163 }
3164
3165 pgi_flags(){
3166     for flag; do
3167         case $flag in
3168             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3169             -fomit-frame-pointer) echo -Mnoframe ;;
3170             -g)                   echo -gopt ;;
3171             *)                    echo $flag ;;
3172         esac
3173     done
3174 }
3175
3176 suncc_flags(){
3177     for flag; do
3178         case $flag in
3179             -march=*|-mcpu=*)
3180                 case "${flag#*=}" in
3181                     native)                   echo -xtarget=native       ;;
3182                     v9|niagara)               echo -xarch=sparc          ;;
3183                     ultrasparc)               echo -xarch=sparcvis       ;;
3184                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3185                     i586|pentium)             echo -xchip=pentium        ;;
3186                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3187                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3188                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3189                     pentium4*)          echo -xtarget=pentium4           ;;
3190                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3191                     *-sse3)             echo -xarch=sse3                 ;;
3192                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3193                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3194                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3195                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3196                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3197                     k8|opteron|athlon64|athlon-fx)
3198                                                echo -xarch=sse2a         ;;
3199                     athlon*)                   echo -xarch=pentium_proa  ;;
3200                 esac
3201                 ;;
3202             -std=c99)             echo -xc99              ;;
3203             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3204             -fPIC)                echo -KPIC -xcode=pic32 ;;
3205             -W*,*)                echo $flag              ;;
3206             -f*-*|-W*|-mimpure-text)                      ;;
3207             -shared)              echo -G                 ;;
3208             *)                    echo $flag              ;;
3209         esac
3210     done
3211 }
3212
3213 tms470_flags(){
3214     for flag; do
3215         case $flag in
3216             -march=*|-mcpu=*)
3217                 case "${flag#*=}" in
3218                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3219                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3220                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3221                     armv6*|arm11*)          echo -mv=6   ;;
3222                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3223                                             echo -mv=5e  ;;
3224                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3225                 esac
3226                 ;;
3227             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3228             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3229             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3230             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3231             -msoft-float)   echo --float_support=vfplib       ;;
3232             -O[0-3]|-mf=*)  echo $flag                        ;;
3233             -g)             echo -g -mn                       ;;
3234             -pds=*)         echo $flag                        ;;
3235             -D*|-I*)        echo $flag                        ;;
3236             --gcc|--abi=*)  echo $flag                        ;;
3237             -me)            echo $flag                        ;;
3238         esac
3239     done
3240 }
3241
3242 probe_cc(){
3243     pfx=$1
3244     _cc=$2
3245
3246     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3247     unset _ld_o _ldflags _ld_lib _ld_path
3248     unset _depflags _DEPCMD _DEPFLAGS
3249     _flags_filter=echo
3250
3251     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3252         _type=llvm_gcc
3253         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3254         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3255         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3256         _cflags_speed='-O3'
3257         _cflags_size='-Os'
3258     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3259         _type=gcc
3260         gcc_version=$($_cc --version | head -n1)
3261         gcc_basever=$($_cc -dumpversion)
3262         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3263         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3264         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3265         if ! $_cc -dumpversion | grep -q '^2\.'; then
3266             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3267         fi
3268         _cflags_speed='-O3'
3269         _cflags_size='-Os'
3270     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3271         _type=icc
3272         _ident=$($_cc --version | head -n1)
3273         _depflags='-MMD'
3274         _cflags_speed='-O3'
3275         _cflags_size='-Os'
3276         _cflags_noopt='-O1'
3277     elif $_cc -v 2>&1 | grep -q xlc; then
3278         _type=xlc
3279         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3280         _cflags_speed='-O5'
3281         _cflags_size='-O5 -qcompact'
3282     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3283         test -d "$sysroot" || die "No valid sysroot specified."
3284         _type=armcc
3285         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3286         armcc_conf="$PWD/armcc.conf"
3287         $_cc --arm_linux_configure                 \
3288              --arm_linux_config_file="$armcc_conf" \
3289              --configure_sysroot="$sysroot"        \
3290              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3291              die "Error creating armcc configuration file."
3292         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3293         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3294         as_default="${cross_prefix}gcc"
3295         _depflags='-MMD'
3296         _cflags_speed='-O3'
3297         _cflags_size='-Os'
3298     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3299         _type=tms470
3300         _ident=$($_cc -version | head -n1 | tr -s ' ')
3301         _flags='--gcc --abi=eabi -me'
3302         _cc_e='-ppl -fe=$@'
3303         _cc_o='-fe=$@'
3304         _depflags='-ppa -ppd=$(@:.o=.d)'
3305         _cflags_speed='-O3 -mf=5'
3306         _cflags_size='-O3 -mf=2'
3307         _flags_filter=tms470_flags
3308     elif $_cc -v 2>&1 | grep -q clang; then
3309         _type=clang
3310         _ident=$($_cc --version 2>/dev/null | head -n1)
3311         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314     elif $_cc -V 2>&1 | grep -q Sun; then
3315         _type=suncc
3316         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3317         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3318         _DEPFLAGS='-xM1 -xc99'
3319         _ldflags='-std=c99'
3320         _cflags_speed='-O5'
3321         _cflags_size='-O5 -xspace'
3322         _flags_filter=suncc_flags
3323     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3324         _type=pathscale
3325         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3326         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3327         _cflags_speed='-O2'
3328         _cflags_size='-Os'
3329         _flags_filter='filter_out -Wdisabled-optimization'
3330     elif $_cc -v 2>&1 | grep -q Open64; then
3331         _type=open64
3332         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3333         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3334         _cflags_speed='-O2'
3335         _cflags_size='-Os'
3336         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3337     elif $_cc -V 2>&1 | grep -q Portland; then
3338         _type=pgi
3339         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3340         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3341         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3342         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3343         _cflags_noopt="-O1"
3344         _flags_filter=pgi_flags
3345     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3346         _type=armasm
3347         _ident=$($_cc | head -n1)
3348         # 4509: "This form of conditional instruction is deprecated"
3349         _flags="-nologo -ignore 4509"
3350         _flags_filter=armasm_flags
3351     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3352         _type=msvc
3353         _ident=$($_cc 2>&1 | head -n1)
3354         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3355         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3356         _cflags_speed="-O2"
3357         _cflags_size="-O1"
3358         _cflags_noopt="-O1"
3359         if $_cc -nologo- 2>&1 | grep -q Linker; then
3360             _ld_o='-out:$@'
3361         else
3362             _ld_o='-Fe$@'
3363         fi
3364         _cc_o='-Fo$@'
3365         _cc_e='-P -Fi$@'
3366         _flags_filter=msvc_flags
3367         _ld_lib='lib%.a'
3368         _ld_path='-libpath:'
3369         _flags='-nologo'
3370     elif $_cc 2>&1 | grep -q Intel; then
3371         _type=icl
3372         _ident=$($_cc 2>&1 | head -n1)
3373         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3374         # Not only is O3 broken on 13.x+ but it is slower on all previous
3375         # versions (tested) as well.
3376         _cflags_speed="-O2"
3377         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3378         if $_cc 2>&1 | grep -q Linker; then
3379             _ld_o='-out:$@'
3380         else
3381             _ld_o='-Fe$@'
3382         fi
3383         _cc_o='-Fo$@'
3384         _cc_e='-P'
3385         _flags_filter=icl_flags
3386         _ld_lib='lib%.a'
3387         _ld_path='-libpath:'
3388         # -Qdiag-error to make icl error when seeing certain unknown arguments
3389         _flags='-nologo -Qdiag-error:4044,10157'
3390         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3391         # with MSVC which enables it by default.
3392         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3393     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3394         # lld can emulate multiple different linkers; in ms link.exe mode,
3395         # the -? parameter gives the help output which contains an identifyable
3396         # string, while it gives an error in other modes.
3397         _type=lld-link
3398         # The link.exe mode doesn't have a switch for getting the version,
3399         # but we can force it back to gnu mode and get the version from there.
3400         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3401         _ld_o='-out:$@'
3402         _flags_filter=msvc_flags
3403         _ld_lib='lib%.a'
3404         _ld_path='-libpath:'
3405     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3406         _type=cparser
3407         _ident=$($_cc --version | head -n1)
3408         _depflags='-MMD'
3409         _cflags_speed='-O4'
3410         _cflags_size='-O2'
3411         _flags_filter=cparser_flags
3412     fi
3413
3414     eval ${pfx}_type=\$_type
3415     eval ${pfx}_ident=\$_ident
3416 }
3417
3418 set_ccvars(){
3419     eval ${1}_C=\${_cc_c-\${${1}_C}}
3420     eval ${1}_E=\${_cc_e-\${${1}_E}}
3421     eval ${1}_O=\${_cc_o-\${${1}_O}}
3422
3423     if [ -n "$_depflags" ]; then
3424         eval ${1}_DEPFLAGS=\$_depflags
3425     else
3426         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3427         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3428         eval DEP${1}FLAGS=\$_flags
3429     fi
3430 }
3431
3432 probe_cc cc "$cc"
3433 cflags_filter=$_flags_filter
3434 cflags_speed=$_cflags_speed
3435 cflags_size=$_cflags_size
3436 cflags_noopt=$_cflags_noopt
3437 add_cflags $_flags $_cflags
3438 cc_ldflags=$_ldflags
3439 set_ccvars CC
3440
3441 probe_cc hostcc "$host_cc"
3442 host_cflags_filter=$_flags_filter
3443 host_cflags_speed=$_cflags_speed
3444 add_host_cflags  $_flags $_cflags
3445 set_ccvars HOSTCC
3446
3447 test -n "$cc_type" && enable $cc_type ||
3448     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3449
3450 : ${as_default:=$cc}
3451 : ${objcc_default:=$cc}
3452 : ${dep_cc_default:=$cc}
3453 : ${ld_default:=$cc}
3454 : ${host_ld_default:=$host_cc}
3455 set_default ar as objcc dep_cc ld host_ld
3456
3457 probe_cc as "$as"
3458 asflags_filter=$_flags_filter
3459 add_asflags $_flags $_cflags
3460 set_ccvars AS
3461
3462 probe_cc objcc "$objcc"
3463 objcflags_filter=$_flags_filter
3464 add_objcflags $_flags $_cflags
3465 set_ccvars OBJC
3466
3467 probe_cc ld "$ld"
3468 ldflags_filter=$_flags_filter
3469 add_ldflags $_flags $_ldflags
3470 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3471 LD_O=${_ld_o-$LD_O}
3472 LD_LIB=${_ld_lib-$LD_LIB}
3473 LD_PATH=${_ld_path-$LD_PATH}
3474
3475 probe_cc hostld "$host_ld"
3476 host_ldflags_filter=$_flags_filter
3477 add_host_ldflags $_flags $_ldflags
3478 HOSTLD_O=${_ld_o-$HOSTLD_O}
3479
3480 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3481     probe_cc depcc "$dep_cc"
3482     CCDEP=${_DEPCMD:-$DEPCMD}
3483     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3484     DEPCCFLAGS=$_flags
3485 fi
3486
3487 if $ar 2>&1 | grep -q Microsoft; then
3488     arflags="-nologo"
3489     ar_o='-out:$@'
3490 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3491     arflags="rq"
3492     ar_o='$@'
3493 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3494     arflags='-Xany -r -c'
3495     ar_o='$@'
3496 else
3497     arflags="rc"
3498     ar_o='$@'
3499 fi
3500
3501 add_cflags $extra_cflags
3502 add_objcflags $extra_objcflags
3503 add_asflags $extra_cflags
3504
3505 if test -n "$sysroot"; then
3506     case "$cc_type" in
3507         gcc|llvm_gcc|clang)
3508             add_cppflags --sysroot="$sysroot"
3509             add_ldflags --sysroot="$sysroot"
3510         ;;
3511         tms470)
3512             add_cppflags -I"$sysinclude"
3513             add_ldflags  --sysroot="$sysroot"
3514         ;;
3515     esac
3516 fi
3517
3518 if test "$cpu" = host; then
3519     enabled cross_compile &&
3520         die "--cpu=host makes no sense when cross-compiling."
3521
3522     case "$cc_type" in
3523         gcc|llvm_gcc)
3524             check_native(){
3525                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3526                 sed -n "/cc1.*$1=/{
3527                             s/.*$1=\\([^ ]*\\).*/\\1/
3528                             p
3529                             q
3530                         }" $TMPE
3531             }
3532             cpu=$(check_native -march || check_native -mcpu)
3533         ;;
3534     esac
3535
3536     test "${cpu:-host}" = host &&
3537         die "--cpu=host not supported with compiler $cc"
3538 fi
3539
3540 # Deal with common $arch aliases
3541 case "$arch" in
3542     aarch64|arm64)
3543         arch="aarch64"
3544     ;;
3545     arm*)
3546         arch="arm"
3547     ;;
3548     mips*|IP*)
3549         case "$arch" in
3550         *el)
3551             add_cppflags -EL
3552             add_ldflags -EL
3553         ;;
3554         *eb)
3555             add_cppflags -EB
3556             add_ldflags -EB
3557         ;;
3558         esac
3559         arch="mips"
3560     ;;
3561     parisc*|hppa*)
3562         arch="parisc"
3563     ;;
3564     "Power Macintosh"|ppc*|powerpc*)
3565         arch="ppc"
3566     ;;
3567     s390|s390x)
3568         arch="s390"
3569     ;;
3570     sh4|sh)
3571         arch="sh4"
3572     ;;
3573     sun4u|sparc*)
3574         arch="sparc"
3575     ;;
3576     tilegx|tile-gx)
3577         arch="tilegx"
3578     ;;
3579     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3580         arch="x86"
3581     ;;
3582 esac
3583
3584 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3585 enable $arch
3586
3587 # Add processor-specific flags
3588 if enabled aarch64; then
3589
3590     case $cpu in
3591         armv*)
3592             cpuflags="-march=$cpu"
3593         ;;
3594         *)
3595             cpuflags="-mcpu=$cpu"
3596         ;;
3597     esac
3598
3599 elif enabled alpha; then
3600
3601     cpuflags="-mcpu=$cpu"
3602
3603 elif enabled arm; then
3604
3605     check_arm_arch() {
3606         check_cpp_condition stddef.h \
3607             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3608             $cpuflags
3609     }
3610
3611     probe_arm_arch() {
3612         if   check_arm_arch 4;        then echo armv4
3613         elif check_arm_arch 4T;       then echo armv4t
3614         elif check_arm_arch 5;        then echo armv5
3615         elif check_arm_arch 5E;       then echo armv5e
3616         elif check_arm_arch 5T;       then echo armv5t
3617         elif check_arm_arch 5TE;      then echo armv5te
3618         elif check_arm_arch 5TEJ;     then echo armv5te
3619         elif check_arm_arch 6;        then echo armv6
3620         elif check_arm_arch 6J;       then echo armv6j
3621         elif check_arm_arch 6K;       then echo armv6k
3622         elif check_arm_arch 6Z;       then echo armv6z
3623         elif check_arm_arch 6ZK;      then echo armv6zk
3624         elif check_arm_arch 6T2;      then echo armv6t2
3625         elif check_arm_arch 7;        then echo armv7
3626         elif check_arm_arch 7A  7_A;  then echo armv7-a
3627         elif check_arm_arch 7S;       then echo armv7-a
3628         elif check_arm_arch 7R  7_R;  then echo armv7-r
3629         elif check_arm_arch 7M  7_M;  then echo armv7-m
3630         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3631         elif check_arm_arch 8A  8_A;  then echo armv8-a
3632         fi
3633     }
3634
3635     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3636
3637     case $cpu in
3638         armv*)
3639             cpuflags="-march=$cpu"
3640             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3641         ;;
3642         *)
3643             cpuflags="-mcpu=$cpu"
3644             case $cpu in
3645                 cortex-a*)                               subarch=armv7a  ;;
3646                 cortex-r*)                               subarch=armv7r  ;;
3647                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3648                 arm11*)                                  subarch=armv6   ;;
3649                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3650                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3651                 *)                             subarch=$(probe_arm_arch) ;;
3652             esac
3653         ;;
3654     esac
3655
3656     case "$subarch" in
3657         armv5t*)    enable fast_clz                ;;
3658         armv[6-8]*) enable fast_clz fast_unaligned ;;
3659     esac
3660
3661 elif enabled avr32; then
3662
3663     case $cpu in
3664         ap7[02]0[0-2])
3665             subarch="avr32_ap"
3666             cpuflags="-mpart=$cpu"
3667         ;;
3668         ap)
3669             subarch="avr32_ap"
3670             cpuflags="-march=$cpu"
3671         ;;
3672         uc3[ab]*)
3673             subarch="avr32_uc"
3674             cpuflags="-mcpu=$cpu"
3675         ;;
3676         uc)
3677             subarch="avr32_uc"
3678             cpuflags="-march=$cpu"
3679         ;;
3680     esac
3681
3682 elif enabled bfin; then
3683
3684     cpuflags="-mcpu=$cpu"
3685
3686 elif enabled mips; then
3687
3688     cpuflags="-march=$cpu"
3689
3690 elif enabled ppc; then
3691
3692     disable ldbrx
3693
3694     case $(tolower $cpu) in
3695         601|ppc601|powerpc601)
3696             cpuflags="-mcpu=601"
3697             disable altivec
3698         ;;
3699         603*|ppc603*|powerpc603*)
3700             cpuflags="-mcpu=603"
3701             disable altivec
3702         ;;
3703         604*|ppc604*|powerpc604*)
3704             cpuflags="-mcpu=604"
3705             disable altivec
3706         ;;
3707         g3|75*|ppc75*|powerpc75*)
3708             cpuflags="-mcpu=750"
3709             disable altivec
3710         ;;
3711         g4|745*|ppc745*|powerpc745*)
3712             cpuflags="-mcpu=7450"
3713             disable vsx
3714         ;;
3715         74*|ppc74*|powerpc74*)
3716             cpuflags="-mcpu=7400"
3717             disable vsx
3718         ;;
3719         g5|970|ppc970|powerpc970)
3720             cpuflags="-mcpu=970"
3721             disable vsx
3722         ;;
3723         power[3-6]*)
3724             cpuflags="-mcpu=$cpu"
3725             disable vsx
3726         ;;
3727         power[7-8]*)
3728             cpuflags="-mcpu=$cpu"
3729             enable ldbrx
3730         ;;
3731         cell)
3732             cpuflags="-mcpu=cell"
3733             enable ldbrx
3734             disable vsx
3735         ;;
3736         e500mc)
3737             cpuflags="-mcpu=e500mc"
3738             disable altivec
3739         ;;
3740         e500v2)
3741             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3742             disable altivec
3743             disable dcbzl
3744         ;;
3745         e500)
3746             cpuflags="-mcpu=8540 -mhard-float"
3747             disable altivec
3748             disable dcbzl
3749         ;;
3750     esac
3751
3752 elif enabled sparc; then
3753
3754     case $cpu in
3755         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3756             cpuflags="-mcpu=$cpu"
3757         ;;
3758         ultrasparc*|niagara[234])
3759             cpuflags="-mcpu=$cpu"
3760         ;;
3761     esac
3762
3763 elif enabled x86; then
3764
3765     case $cpu in
3766         i[345]86|pentium)
3767             cpuflags="-march=$cpu"
3768             disable i686
3769             disable mmx
3770         ;;
3771         # targets that do NOT support nopl and conditional mov (cmov)
3772         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3773             cpuflags="-march=$cpu"
3774             disable i686
3775         ;;
3776         # targets that do support nopl and conditional mov (cmov)
3777         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3778             cpuflags="-march=$cpu"
3779             enable i686
3780             enable fast_cmov
3781         ;;
3782         # targets that do support conditional mov but on which it's slow
3783         pentium4|pentium4m|prescott|nocona)
3784             cpuflags="-march=$cpu"
3785             enable i686
3786             disable fast_cmov
3787         ;;
3788     esac
3789
3790 fi
3791
3792 if [ "$cpu" != generic ]; then
3793     add_cflags  $cpuflags
3794     add_asflags $cpuflags
3795     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3796 fi
3797
3798 # compiler sanity check
3799 check_exec <<EOF
3800 int main(void){ return 0; }
3801 EOF
3802 if test "$?" != 0; then
3803     echo "$cc is unable to create an executable file."
3804     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3805         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3806         echo "Only do this if you know what cross compiling means."
3807     fi
3808     die "C compiler test failed."
3809 fi
3810
3811 add_cppflags -D_ISOC99_SOURCE
3812
3813 # some compilers silently accept -std=c11, so we also need to check that the
3814 # version macro is defined properly
3815 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3816     add_cflags -std=c11 ||
3817     check_cflags -std=c99
3818
3819 check_cppflags -D_FILE_OFFSET_BITS=64
3820 check_cppflags -D_LARGEFILE_SOURCE
3821
3822 add_host_cppflags -D_ISOC99_SOURCE
3823 check_host_cflags -std=c99
3824 check_host_cflags -Wall
3825 check_host_cflags $host_cflags_speed
3826
3827 check_64bit(){
3828     arch32=$1
3829     arch64=$2
3830     expr=$3
3831     check_code cc "" "int test[2*($expr) - 1]" &&
3832         subarch=$arch64 || subarch=$arch32
3833 }
3834
3835 case "$arch" in
3836     aarch64|alpha|ia64)
3837         spic=$shared
3838     ;;
3839     mips)
3840         check_64bit mips mips64 '_MIPS_SIM > 1'
3841         spic=$shared
3842     ;;
3843     parisc)
3844         check_64bit parisc parisc64 'sizeof(void *) > 4'
3845         spic=$shared
3846     ;;
3847     ppc)
3848         check_64bit ppc ppc64 'sizeof(void *) > 4'
3849         spic=$shared
3850     ;;
3851     s390)
3852         check_64bit s390 s390x 'sizeof(void *) > 4'
3853         spic=$shared
3854     ;;
3855     sparc)
3856         check_64bit sparc sparc64 'sizeof(void *) > 4'
3857         spic=$shared
3858     ;;
3859     x86)
3860         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3861         if test "$subarch" = "x86_64"; then
3862             spic=$shared
3863         fi
3864     ;;
3865 esac
3866
3867 enable $subarch
3868 enabled spic && enable_weak pic
3869
3870 enabled x86_64 && objformat=elf64 || objformat="elf32"
3871
3872 # OS specific
3873 case $target_os in
3874     aix)
3875         SHFLAGS=-shared
3876         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3877         enabled shared && add_ldflags -Wl,-brtl
3878         ;;
3879     android)
3880         disable symver
3881         enable section_data_rel_ro
3882         SLIB_INSTALL_NAME='$(SLIBNAME)'
3883         SLIB_INSTALL_LINKS=
3884         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3885         ;;
3886     haiku)
3887         prefix_default="/boot/common"
3888         network_extralibs="-lnetwork"
3889         host_extralibs=
3890         ;;
3891     sunos)
3892         SHFLAGS='-shared -Wl,-h,$$(@F)'
3893         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3894         network_extralibs="-lsocket -lnsl"
3895         # When using suncc to build, the Solaris linker will mark
3896         # an executable with each instruction set encountered by
3897         # the Solaris assembler.  As our libraries contain their own
3898         # guards for processor-specific code, instead suppress
3899         # generation of the HWCAPS ELF section on Solaris x86 only.
3900         enabled_all suncc x86 &&
3901             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3902             add_ldflags -Wl,-M,mapfile
3903         nm_default='nm -P -g'
3904         version_script='-M'
3905         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3906         ;;
3907     netbsd)
3908         disable symver
3909         oss_indev_extralibs="-lossaudio"
3910         oss_outdev_extralibs="-lossaudio"
3911         ;;
3912     openbsd|bitrig)
3913         disable symver
3914         SHFLAGS='-shared'
3915         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3916         SLIB_INSTALL_LINKS=
3917         oss_indev_extralibs="-lossaudio"
3918         oss_outdev_extralibs="-lossaudio"
3919         ;;
3920     dragonfly)
3921         disable symver
3922         ;;
3923     freebsd)
3924         ;;
3925     bsd/os)
3926         add_extralibs -lpoll -lgnugetopt
3927         ;;
3928     darwin)
3929         enabled ppc && add_asflags -force_cpusubtype_ALL
3930         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3931         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3932         add_ldflags -Wl,-dynamic,-search_paths_first
3933         check_cflags -Werror=partial-availability
3934         SLIBSUF=".dylib"
3935         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3936         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3937         enabled x86_64 && objformat="macho64" || objformat="macho32"
3938         enabled_any pic shared ||
3939             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3940         check_header dispatch/dispatch.h &&
3941             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3942         if test -n "$sysroot"; then
3943             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3944             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3945         fi
3946         ;;
3947     msys*)
3948         die "Native MSYS builds are discouraged, please use the MINGW environment."
3949         ;;
3950     mingw32*|mingw64*)
3951         target_os=mingw32
3952         LIBTARGET=i386
3953         if enabled x86_64; then
3954             LIBTARGET="i386:x86-64"
3955         fi
3956         if enabled shared; then
3957             # Cannot build both shared and static libs when using dllexport.
3958             disable static
3959         fi
3960         check_ldflags -Wl,--nxcompat
3961         check_ldflags -Wl,--dynamicbase
3962         shlibdir_default="$bindir_default"
3963         SLIBPREF=""
3964         SLIBSUF=".dll"
3965         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3966         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3967         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3968         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3969         SLIB_INSTALL_LINKS=
3970         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3971         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3972         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3973         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3974         enabled x86_64 && objformat="win64" || objformat="win32"
3975         dlltool="${cross_prefix}dlltool"
3976         ranlib=:
3977         enable dos_paths
3978         ;;
3979     win32|win64)
3980         disable symver
3981         if enabled shared; then
3982             # Link to the import library instead of the normal static library
3983             # for shared libs.
3984             LD_LIB='%.lib'
3985             # Cannot build both shared and static libs with MSVC or icl.
3986             disable static
3987         fi
3988         shlibdir_default="$bindir_default"
3989         SLIBPREF=""
3990         SLIBSUF=".dll"
3991         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3992         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3993         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3994         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3995         SLIB_INSTALL_LINKS=
3996         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3997         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3998         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3999         enabled x86_64 && objformat="win64" || objformat="win32"
4000         ranlib=:
4001         enable dos_paths
4002         ;;
4003     cygwin*)
4004         target_os=cygwin
4005         shlibdir_default="$bindir_default"
4006         SLIBPREF="cyg"
4007         SLIBSUF=".dll"
4008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_LINKS=
4012         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4013         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4014         enabled x86_64 && objformat="win64" || objformat="win32"
4015         enable dos_paths
4016         ;;
4017     *-dos|freedos|opendos)
4018         network_extralibs="-lsocket"
4019         objformat="coff"
4020         enable dos_paths
4021         add_cppflags -U__STRICT_ANSI__
4022         ;;
4023     linux)
4024         enable dv1394
4025         enable section_data_rel_ro
4026         ;;
4027     irix*)
4028         target_os=irix
4029         ranlib="echo ignoring ranlib"
4030         ;;
4031     os/2*)
4032         ln_s="cp -f"
4033         objformat="aout"
4034         add_cppflags -D_GNU_SOURCE
4035         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4036         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4037         LIBSUF="_s.a"
4038         SLIBPREF=""
4039         SLIBSUF=".dll"
4040         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4041         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4042         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4043             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4044             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4045             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4046             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4047         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4048             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4049         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4050         enable dos_paths
4051         ;;
4052     gnu/kfreebsd)
4053         add_cppflags -D_BSD_SOURCE
4054         ;;
4055     gnu)
4056         ;;
4057     qnx)
4058         add_cppflags -D_QNX_SOURCE
4059         network_extralibs="-lsocket"
4060         ;;
4061     symbian)
4062         SLIBSUF=".dll"
4063         enable dos_paths
4064         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4065         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4066         add_ldflags -Wl,--target1-abs,--no-undefined \
4067                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4068                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4069         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4070                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4071                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4072         ;;
4073     minix)
4074         ;;
4075     none)
4076         ;;
4077     *)
4078         die "Unknown OS '$target_os'."
4079         ;;
4080 esac
4081
4082 # determine libc flavour
4083
4084 probe_libc(){
4085     pfx=$1
4086     pfx_no_=${pfx%_}
4087     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4088     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4089         eval ${pfx}libc_type=uclibc
4090         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4091     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4092         eval ${pfx}libc_type=glibc
4093         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4094     # MinGW headers can be installed on Cygwin, so check for newlib first.
4095     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4096         eval ${pfx}libc_type=newlib
4097         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4098     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4099     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4100         eval ${pfx}libc_type=mingw64
4101         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4102         eval test \$${pfx_no_}cc_type = "gcc" &&
4103             add_${pfx}cppflags -D__printf__=__gnu_printf__
4104     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4105          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4106         eval ${pfx}libc_type=mingw32
4107         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4108             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4109             die "ERROR: MinGW32 runtime version must be >= 3.15."
4110         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4111         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4112             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4113         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4114             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4115         eval test \$${pfx_no_}cc_type = "gcc" &&
4116             add_${pfx}cppflags -D__printf__=__gnu_printf__
4117     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4118         eval ${pfx}libc_type=msvcrt
4119         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4120             if [ "$pfx" = host_ ]; then
4121                 add_host_cppflags -Dsnprintf=_snprintf
4122             else
4123                 add_compat strtod.o strtod=avpriv_strtod
4124                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4125                                              _snprintf=avpriv_snprintf  \
4126                                              vsnprintf=avpriv_vsnprintf
4127             fi
4128         fi
4129         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4130         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4131         # 0x601 by default unless something else is set by the user.
4132         # This can easily lead to us detecting functions only present
4133         # in such new versions and producing binaries requiring windows 7.0.
4134         # Therefore explicitly set the default to XP unless the user has
4135         # set something else on the command line.
4136         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4137         # family. For these cases, configure is free to use any functions
4138         # found in the SDK headers by default. (Alternatively, we could force
4139         # _WIN32_WINNT to 0x0602 in that case.)
4140         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4141             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4142 #ifdef WINAPI_FAMILY
4143 #include <winapifamily.h>
4144 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4145 #error not desktop
4146 #endif
4147 #endif
4148 EOF
4149         if [ "$pfx" = "" ]; then
4150             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4151         fi
4152     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4153         eval ${pfx}libc_type=klibc
4154     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4155         eval ${pfx}libc_type=bionic
4156     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4157         eval ${pfx}libc_type=solaris
4158         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4159     else
4160         eval ${pfx}libc_type=default
4161         add_${pfx}cppflags -D_DEFAULT_SOURCE
4162     fi
4163 }
4164
4165 probe_libc
4166 test -n "$libc_type" && enable libc_$libc_type
4167 probe_libc host_
4168 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4169
4170 # hacks for compiler/libc/os combinations
4171
4172 case $libc_type in
4173     bionic)
4174         add_compat strtod.o strtod=avpriv_strtod
4175         ;;
4176     glibc)
4177         if enabled tms470; then
4178             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4179             add_cppflags -D__USER_LABEL_PREFIX__=
4180             add_cppflags -D__builtin_memset=memset
4181             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4182             add_cflags   -pds=48    # incompatible redefinition of macro
4183         fi
4184         ;;
4185 esac
4186
4187 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4188     add_cppflags '-I\$(SRC_PATH)/compat/float'
4189
4190 esc(){
4191     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4192 }
4193
4194 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4195
4196 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4197
4198 set_default $PATHS_LIST
4199 set_default nm
4200
4201 # we need to build at least one lib type
4202 if ! enabled_any static shared; then
4203     cat <<EOF
4204 At least one library type must be built.
4205 Specify --enable-static to build the static libraries or --enable-shared to
4206 build the shared libraries as well. To only build the shared libraries specify
4207 --disable-static in addition to --enable-shared.
4208 EOF
4209     exit 1
4210 fi
4211
4212 disabled optimizations || check_cflags -fomit-frame-pointer
4213
4214 enable_weak_pic() {
4215     disabled pic && return
4216     enable pic
4217     add_cppflags -DPIC
4218     case "$target_os" in
4219     mingw*|cygwin*)
4220         ;;
4221     *)
4222         add_cflags -fPIC
4223         ;;
4224     esac
4225     add_asflags  -fPIC
4226 }
4227
4228 enabled pic && enable_weak_pic
4229
4230 check_cc <<EOF || die "Symbol mangling check failed."
4231 int ff_extern;
4232 EOF
4233 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4234 extern_prefix=${sym%%ff_extern*}
4235
4236 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4237
4238 _restrict=
4239 for restrict_keyword in restrict __restrict__ __restrict; do
4240     check_cc <<EOF && _restrict=$restrict_keyword && break
4241 void foo(char * $restrict_keyword p);
4242 EOF
4243 done
4244
4245 check_cc <<EOF && enable pragma_deprecated
4246 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4247 EOF
4248
4249 check_cc <<EOF || die "endian test failed"
4250 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4251 EOF
4252 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4253
4254 check_gas() {
4255     log "check_gas using '$as' as AS"
4256     # :vararg is used on aarch64, arm and ppc altivec
4257     check_as <<EOF || return 1
4258 .macro m n, y:vararg=0
4259 \n: .int \y
4260 .endm
4261 m x
4262 EOF
4263     # .altmacro is only used in arm asm
4264     ! enabled arm || check_as <<EOF || return 1
4265 .altmacro
4266 EOF
4267     enable gnu_as
4268     return 0
4269 }
4270
4271 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4272     nogas=:
4273     enabled_any arm aarch64 && nogas=die
4274     enabled_all ppc altivec && nogas=warn
4275     as_noop=-v
4276
4277     case $as_type in
4278         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4279         gcc)  gaspp_as_type=gas ;;
4280         *)    gaspp_as_type=$as_type ;;
4281     esac
4282
4283     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4284
4285     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4286         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4287
4288     if ! check_gas ; then
4289         as=${gas:=$as}
4290         check_gas || \
4291             $nogas "GNU assembler not found, install/update gas-preprocessor"
4292     fi
4293
4294     check_as <<EOF && enable as_func
4295 .func test
4296 .endfunc
4297 EOF
4298 fi
4299
4300 check_inline_asm inline_asm_labels '"1:\n"'
4301
4302 if enabled aarch64; then
4303     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4304     # internal assembler in clang 3.3 does not support this instruction
4305     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4306     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4307
4308     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4309
4310 elif enabled alpha; then
4311
4312     check_cflags -mieee
4313
4314 elif enabled arm; then
4315
4316     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4317     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4318     enabled thumb && check_cflags -mthumb || check_cflags -marm
4319
4320     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4321         enable vfp_args
4322     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4323         enable vfp_args
4324     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4325         case "${cross_prefix:-$cc}" in
4326             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4327             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4328 __asm__ (".eabi_attribute 28, 1");
4329 int main(void) { return 0; }
4330 EOF
4331         esac
4332         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4333     fi
4334
4335     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4336     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4337     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4338     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4339     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4340     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4341
4342     [ $target_os = linux ] || [ $target_os = android ] ||
4343         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4344             $ARCH_EXT_LIST_ARM
4345
4346     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4347
4348     check_as <<EOF && enable as_arch_directive
4349 .arch armv7-a
4350 EOF
4351     check_as <<EOF && enable as_fpu_directive
4352 .fpu neon
4353 EOF
4354
4355     # llvm's integrated assembler supports .object_arch from llvm 3.5
4356     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4357         check_as <<EOF && enable as_object_arch
4358 .object_arch armv4
4359 EOF
4360
4361     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4362
4363 elif enabled mips; then
4364
4365     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4366
4367     # make sure that only an instruction set is enabled
4368     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4369
4370     if enabled mips64; then
4371         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4372             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4373                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4374     else
4375         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4376             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4377                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4378     fi
4379
4380 elif enabled parisc; then
4381
4382     if enabled gcc; then
4383         case $($cc -dumpversion) in
4384             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4385         esac
4386     fi
4387
4388 elif enabled ppc; then
4389
4390     enable local_aligned_8 local_aligned_16 local_aligned_32
4391
4392     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4393     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4394     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4395     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4396
4397     if enabled altivec; then
4398         check_cflags -maltivec -mabi=altivec
4399
4400         # check if our compiler supports Motorola AltiVec C API
4401         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4402                                  vector signed int v2 = (vector signed int) { 1 };
4403                                  v1 = vec_add(v1, v2);" ||
4404             disable altivec
4405
4406         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4407     fi
4408
4409     if enabled vsx; then
4410         check_cflags -mvsx &&
4411         check_code cc altivec.h "int v[4] = { 0 };
4412                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4413             disable vsx
4414     fi
4415
4416     if enabled power8; then
4417         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4418     fi
4419
4420 elif enabled x86; then
4421
4422     check_builtin rdtsc    intrin.h   "__rdtsc()"
4423     check_builtin mm_empty mmintrin.h "_mm_empty()"
4424
4425     enable local_aligned_8 local_aligned_16 local_aligned_32
4426
4427     # check whether EBP is available on x86
4428     # As 'i' is stored on the stack, this program will crash
4429     # if the base pointer is used to access it because the
4430     # base pointer is cleared in the inline assembly code.
4431     check_exec_crash <<EOF && enable ebp_available
4432 volatile int i=0;
4433 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4434 return i;
4435 EOF
4436
4437     # check whether EBX is available on x86
4438     check_inline_asm ebx_available '""::"b"(0)' &&
4439         check_inline_asm ebx_available '"":::"%ebx"'
4440
4441     # check whether xmm clobbers are supported
4442     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4443
4444     # check whether binutils is new enough to compile SSSE3/MMXEXT
4445     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4446     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4447
4448     probe_x86asm(){
4449         x86asmexe_probe=$1
4450         if check_cmd $x86asmexe_probe -v; then
4451             x86asmexe=$x86asmexe_probe
4452             x86asm_type=nasm
4453             x86asm_debug="-g -F dwarf"
4454             X86ASMDEP=
4455             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4456         elif check_cmd $x86asmexe_probe --version; then
4457             x86asmexe=$x86asmexe_probe
4458             x86asm_type=yasm
4459             x86asm_debug="-g dwarf2"
4460             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4461             X86ASM_DEPFLAGS=
4462         fi
4463         check_x86asm "movbe ecx, [5]" && enable x86asm
4464     }
4465
4466     if ! disabled_any asm mmx x86asm; then
4467         disable x86asm
4468         for program in $x86asmexe nasm yasm; do
4469             probe_x86asm $program && break
4470         done
4471         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4472         X86ASMFLAGS="-f $objformat"
4473         enabled pic               && append X86ASMFLAGS "-DPIC"
4474         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4475         case "$objformat" in
4476             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4477         esac
4478
4479         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4480         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4481         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4482         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4483         check_x86asm "CPU amdnop"                      || disable cpunop
4484     fi
4485
4486     case "$cpu" in
4487         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4488             disable fast_clz
4489         ;;
4490     esac
4491
4492 fi
4493
4494 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4495
4496 check_ldflags -Wl,--as-needed
4497
4498 if ! disabled network; then
4499     check_func getaddrinfo $network_extralibs
4500     check_func inet_aton $network_extralibs
4501
4502     check_type netdb.h "struct addrinfo"
4503     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4504     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4505     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4506     check_type poll.h "struct pollfd"
4507     check_type netinet/sctp.h "struct sctp_event_subscribe"
4508     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4509     check_type netinet/in.h "struct sockaddr_in6"
4510     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4511     check_type "sys/types.h sys/socket.h" socklen_t
4512
4513     # Prefer arpa/inet.h over winsock2
4514     if check_header arpa/inet.h ; then
4515         check_func closesocket
4516     elif check_header winsock2.h ; then
4517         check_func_headers winsock2.h closesocket -lws2 &&
4518             network_extralibs="-lws2" ||
4519         { check_func_headers winsock2.h closesocket -lws2_32 &&
4520             network_extralibs="-lws2_32"; } || disable winsock2_h network
4521         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4522
4523         check_type ws2tcpip.h socklen_t
4524         check_type ws2tcpip.h "struct addrinfo"
4525         check_type ws2tcpip.h "struct group_source_req"
4526         check_type ws2tcpip.h "struct ip_mreq_source"
4527         check_type ws2tcpip.h "struct ipv6_mreq"
4528         check_type winsock2.h "struct pollfd"
4529         check_struct winsock2.h "struct sockaddr" sa_len
4530         check_type ws2tcpip.h "struct sockaddr_in6"
4531         check_type ws2tcpip.h "struct sockaddr_storage"
4532     else
4533         disable network
4534     fi
4535 fi
4536
4537 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4538 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4539 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4540 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4541
4542 case "$custom_allocator" in
4543     jemalloc)
4544         # jemalloc by default does not use a prefix
4545         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4546     ;;
4547     tcmalloc)
4548         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4549         malloc_prefix=tc_
4550     ;;
4551 esac
4552
4553 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4554 check_func  ${malloc_prefix}memalign            && enable memalign
4555 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4556
4557 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4558     { check_lib clock_gettime time.h clock_gettime ||
4559       check_lib clock_gettime time.h clock_gettime -lrt; }
4560
4561 check_func  fcntl
4562 check_func  gethrtime
4563 check_func  getopt
4564 check_func  getrusage
4565 check_func  gettimeofday
4566 check_func  gmtime_r
4567 check_func  isatty
4568 check_func  localtime_r
4569 check_func  mkstemp
4570 check_func  mmap
4571 check_func  mprotect
4572 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4573 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4574 check_func  sched_getaffinity
4575 check_func  setrlimit
4576 check_func  strerror_r
4577 check_func  sysconf
4578 check_func  sysctl
4579 check_func  usleep
4580
4581 check_func_headers io.h setmode
4582 check_func_headers mach/mach_time.h mach_absolute_time
4583 check_func_headers stdlib.h getenv
4584
4585 check_func_headers windows.h GetProcessAffinityMask
4586 check_func_headers windows.h GetProcessTimes
4587 check_func_headers windows.h GetSystemTimeAsFileTime
4588 check_func_headers windows.h LoadLibrary
4589 check_func_headers windows.h MapViewOfFile
4590 check_func_headers windows.h SetConsoleTextAttribute
4591 check_func_headers windows.h Sleep
4592 check_func_headers windows.h VirtualAlloc
4593 check_struct windows.h "CONDITION_VARIABLE" Ptr
4594
4595 check_header direct.h
4596 check_header dxgidebug.h
4597 check_header dxva.h
4598 check_header dxva2api.h
4599 check_header io.h
4600 check_header malloc.h
4601 check_header poll.h
4602 check_header sys/param.h
4603 check_header sys/resource.h
4604 check_header sys/select.h
4605 check_header sys/time.h
4606 check_header sys/un.h
4607 check_header unistd.h
4608 check_header valgrind/valgrind.h
4609 check_header VideoDecodeAcceleration/VDADecoder.h
4610 check_header windows.h
4611
4612 # it seems there are versions of clang in some distros that try to use the
4613 # gcc headers, which explodes for stdatomic
4614 # so we also check that atomics actually work here
4615 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4616
4617 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4618 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4619 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4620 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4621
4622 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4623
4624 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4625 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4626 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4627
4628 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4629 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4630 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4631
4632 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4633 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4634 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4635 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4636 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4637 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4638 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4639 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4640 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4641
4642 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4643
4644 if ! disabled w32threads && ! enabled pthreads; then
4645     check_lib w32threads "windows.h process.h" _beginthreadex
4646 fi
4647
4648 # check for some common methods of building with pthread support
4649 # do this before the optional library checks as some of them require pthreads
4650 if ! disabled pthreads && ! enabled w32threads; then
4651     if check_lib pthreads pthread.h pthread_join -pthread; then
4652         add_cflags -pthread
4653     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4654         add_cflags -pthreads
4655     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4656         :
4657     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4658         :
4659     elif check_func pthread_join; then
4660         enable pthreads
4661     fi
4662 fi
4663
4664 enabled pthreads &&
4665     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4666
4667 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4668 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4669
4670 # On some systems dynamic loading requires no extra linker flags
4671 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4672
4673 check_lib libm math.h sin -lm
4674
4675 atan2f_args=2
4676 ldexpf_args=2
4677 powf_args=2
4678
4679 for func in $MATH_FUNCS; do
4680     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4681 done
4682
4683 # these are off by default, so fail if requested and not available
4684 enabled avisynth          && require_header avisynth/avisynth_c.h
4685 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4686 enabled cuda              && require cuda cuda.h cuInit -lcuda
4687 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4688 enabled frei0r            && require_header frei0r.h
4689 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4690                              check_lib gmp gmp.h mpz_export -lgmp
4691 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4692 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4693 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4694 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4695 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4696 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4697 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4698 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4699 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4700 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4701 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4702 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4703 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4704 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4705 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4706 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4707 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4708 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4709 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4710                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4711 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4712 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4713 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4714 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4715 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4716 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4717 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4718 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4719 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4720 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4721 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4722 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4723                              { enabled libvpx_vp8_decoder &&
4724                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4725                                enabled libvpx_vp8_encoder &&
4726                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4727                                enabled libvpx_vp9_decoder &&
4728                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4729                                enabled libvpx_vp9_encoder &&
4730                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4731                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4732                                    die "libvpx enabled but no supported decoders/encoders found"
4733                              }
4734 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4735 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4736 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4737                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4738                              { check_cpp_condition x264.h "X264_MPEG2" &&
4739                                enable libx262; }
4740 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4741                              require_cpp_condition x265.h "X265_BUILD >= 57"
4742 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4743 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4744 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4745                                { ! enabled cross_compile &&
4746                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4747                                  add_ldflags -L/opt/vc/lib/ &&
4748                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4749                                die "ERROR: mmal not found" &&
4750                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4751 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4752 enabled omx               && require_header OMX_Core.h
4753 enabled omx_rpi           && { check_header OMX_Core.h ||
4754                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4755                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4756 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4757                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4758                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4759                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4760                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4761                                die "ERROR: openssl not found"; }
4762
4763 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4764 enabled avplay &&
4765     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4766
4767 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4768 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4769
4770 check_header linux/fb.h
4771 check_header linux/videodev2.h
4772 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4773
4774 check_header AVFoundation/AVFoundation.h
4775
4776 check_header sys/videoio.h
4777
4778 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4779 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4780 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4781 # w32api 3.12 had it defined wrong
4782 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4783
4784 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4785 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4786     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4787     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4788     check_header "dev/ic/bt8xx.h"
4789
4790 check_header sys/soundcard.h
4791
4792 enabled_any alsa_indev alsa_outdev &&
4793     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4794
4795 enabled libjack &&
4796     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4797
4798 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4799
4800 if enabled libcdio; then
4801     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4802     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4803     die "ERROR: No usable libcdio/cdparanoia found"
4804 fi
4805
4806 if enabled libxcb; then
4807     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4808     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4809     disabled libxcb_shm ||