configure: Drop feature for randomly disabling/enabling components
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-cuvid   Nvidia CUVID video decode acceleration
241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
244   --enable-libnpp  Nvidia CUDA processing
245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
246   --enable-nvenc   Nvidia video encoding
247   --enable-omx     OpenMAX IL
248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
250   --enable-vda     Apple Video Decode Acceleration [auto]
251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
252
253 Toolchain options:
254   --arch=ARCH              select architecture [$arch]
255   --cpu=CPU                select the minimum required CPU (affects
256                            instruction selection, may crash on older CPUs)
257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
258   --enable-cross-compile   assume a cross-compiler is used
259   --sysroot=PATH           root of cross-build tree
260   --sysinclude=PATH        location of cross-build system headers
261   --target-os=OS           compiler targets OS [$target_os]
262   --target-exec=CMD        command to run executables on target
263   --target-path=DIR        path to view of build directory on target
264   --target-samples=DIR     path to samples directory on target
265   --toolchain=NAME         set tool defaults according to NAME
266   --nm=NM                  use nm tool
267   --ar=AR                  use archive tool AR [$ar_default]
268   --as=AS                  use assembler AS [$as_default]
269   --cc=CC                  use C compiler CC [$cc_default]
270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
272   --ld=LD                  use linker LD
273   --x86asmexe=X86ASM       use x86 assembler X86ASM
274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
276   --host-cc=HOSTCC         use host C compiler HOSTCC
277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
279   --host-ld=HOSTLD         use host linker HOSTLD
280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
281   --host-libs=HLIBS        use libs HLIBS when linking for host
282   --host-os=OS             compiler host OS [$target_os]
283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --enable-pic             build position-independent code
292   --enable-thumb           compile for Thumb instruction set
293   --enable-lto             use link-time optimization
294   --env="ENV=override"     override the environment variables
295
296 Advanced options (experts only):
297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
298   --custom-allocator=NAME  use a supported custom allocator
299   --disable-symver         disable symbol versioning
300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
301   --disable-safe-bitstream-reader
302                            disable buffer boundary checking in bitreaders
303                            (faster, but may crash)
304   --enable-sram            allow use of on-chip SRAM
305
306 Optimization options (experts only):
307   --disable-asm            disable all assembly optimizations
308   --disable-altivec        disable AltiVec optimizations
309   --disable-vsx            disable VSX optimizations
310   --disable-power8         disable POWER8 optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-xop            disable XOP optimizations
323   --disable-fma3           disable FMA3 optimizations
324   --disable-fma4           disable FMA4 optimizations
325   --disable-avx2           disable AVX2 optimizations
326   --disable-armv5te        disable armv5te optimizations
327   --disable-armv6          disable armv6 optimizations
328   --disable-armv6t2        disable armv6t2 optimizations
329   --disable-vfp            disable VFP optimizations
330   --disable-neon           disable NEON optimizations
331   --disable-inline-asm     disable use of inline assembly
332   --disable-x86asm         disable use of standalone x86 assembly
333
334 Developer options (useful when working on Libav itself):
335   --disable-debug          disable debugging symbols
336   --enable-debug=LEVEL     set the debug level [$debuglevel]
337   --disable-optimizations  disable compiler optimizations
338   --enable-extra-warnings  enable more compiler warnings
339   --samples=PATH           location of test samples for FATE, if not set use
340                            \$LIBAV_SAMPLES at make invocation time.
341   --enable-neon-clobber-test check NEON registers for clobbering (should be
342                            used only for debugging purposes)
343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
344                            should be used only for debugging purposes)
345   --disable-valgrind-backtrace do not print a backtrace under Valgrind
346                            (only applies to --disable-optimizations builds)
347   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
348                            in the name) of tests whose result is ignored
349
350 NOTE: Object files are built at the place where configure is launched.
351 EOF
352   exit 0
353 }
354
355 quotes='""'
356
357 log(){
358     echo "$@" >> $logfile
359 }
360
361 log_file(){
362     log BEGIN $1
363     i=1
364     while read line; do
365         printf '%5s   %s\n' "${i}" "${line}"
366         i=$(($i+1))
367     done < $1 >> $logfile
368     log END $1
369 }
370
371 echolog(){
372     log "$@"
373     echo "$@"
374 }
375
376 warn(){
377     log "WARNING: $*"
378     WARNINGS="${WARNINGS}WARNING: $*\n"
379 }
380
381 die(){
382     echolog "$@"
383     cat <<EOF
384
385 If you think configure made a mistake, make sure you are using the latest
386 version from Git.  If the latest version fails, report the problem to the
387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
388 EOF
389     if disabled logging; then
390         cat <<EOF
391 Rerun configure with logging enabled (do not use --disable-logging), and
392 include the log this produces with your report.
393 EOF
394     else
395         cat <<EOF
396 Include the log file "$logfile" produced by configure as this will help
397 solving the problem.
398 EOF
399     fi
400     exit 1
401 }
402
403 # Avoid locale weirdness, besides we really just want to translate ASCII.
404 toupper(){
405     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
406 }
407
408 tolower(){
409     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
410 }
411
412 c_escape(){
413     echo "$*" | sed 's/["\\]/\\\0/g'
414 }
415
416 sh_quote(){
417     v=$(echo "$1" | sed "s/'/'\\\\''/g")
418     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
419     echo "$v"
420 }
421
422 cleanws(){
423     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
424 }
425
426 filter(){
427     pat=$1
428     shift
429     for v; do
430         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
431     done
432 }
433
434 filter_out(){
435     pat=$1
436     shift
437     for v; do
438         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
439     done
440 }
441
442 map(){
443     m=$1
444     shift
445     for v; do eval $m; done
446 }
447
448 add_suffix(){
449     suffix=$1
450     shift
451     for v; do echo ${v}${suffix}; done
452 }
453
454 set_all(){
455     value=$1
456     shift
457     for var in $*; do
458         eval $var=$value
459     done
460 }
461
462 set_weak(){
463     value=$1
464     shift
465     for var; do
466         eval : \${$var:=$value}
467     done
468 }
469
470 sanitize_var_name(){
471     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
472 }
473
474 set_sanitized(){
475     var=$1
476     shift
477     eval $(sanitize_var_name "$var")='$*'
478 }
479
480 get_sanitized(){
481     eval echo \$$(sanitize_var_name "$1")
482 }
483
484 pushvar(){
485     for pvar in $*; do
486         eval level=\${${pvar}_level:=0}
487         eval ${pvar}_${level}="\$$pvar"
488         eval ${pvar}_level=$(($level+1))
489     done
490 }
491
492 popvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:-0}
495         test $level = 0 && continue
496         eval level=$(($level-1))
497         eval $pvar="\${${pvar}_${level}}"
498         eval ${pvar}_level=$level
499         eval unset ${pvar}_${level}
500     done
501 }
502
503 enable(){
504     set_all yes $*
505 }
506
507 disable(){
508     set_all no $*
509 }
510
511 enable_weak(){
512     set_weak yes $*
513 }
514
515 disable_weak(){
516     set_weak no $*
517 }
518
519 enable_sanitized(){
520     for var; do
521         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
522     done
523 }
524
525 disable_sanitized(){
526     for var; do
527         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 do_enable_deep(){
532     for var; do
533         enabled $var && continue
534         eval sel="\$${var}_select"
535         eval sgs="\$${var}_suggest"
536         pushvar var sgs
537         enable_deep $sel
538         popvar sgs
539         enable_deep_weak $sgs
540         popvar var
541     done
542 }
543
544 enable_deep(){
545     do_enable_deep $*
546     enable $*
547 }
548
549 enable_deep_weak(){
550     for var; do
551         disabled $var && continue
552         pushvar var
553         do_enable_deep $var
554         popvar var
555         enable_weak $var
556     done
557 }
558
559 enabled(){
560     test "${1#!}" = "$1" && op== || op=!=
561     eval test "x\$${1#!}" $op "xyes"
562 }
563
564 disabled(){
565     test "${1#!}" = "$1" && op== || op=!=
566     eval test "x\$${1#!}" $op "xno"
567 }
568
569 enabled_all(){
570     for opt; do
571         enabled $opt || return 1
572     done
573 }
574
575 disabled_all(){
576     for opt; do
577         disabled $opt || return 1
578     done
579 }
580
581 enabled_any(){
582     for opt; do
583         enabled $opt && return 0
584     done
585 }
586
587 disabled_any(){
588     for opt; do
589         disabled $opt && return 0
590     done
591     return 1
592 }
593
594 set_default(){
595     for opt; do
596         eval : \${$opt:=\$${opt}_default}
597     done
598 }
599
600 is_in(){
601     value=$1
602     shift
603     for var in $*; do
604         [ $var = $value ] && return 0
605     done
606     return 1
607 }
608
609 check_deps(){
610     for cfg; do
611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
612         disabled ${cfg}_checking && continue
613         enable ${cfg}_checking
614
615         eval dep_all="\$${cfg}_deps"
616         eval dep_any="\$${cfg}_deps_any"
617         eval dep_con="\$${cfg}_conflict"
618         eval dep_sel="\$${cfg}_select"
619         eval dep_sgs="\$${cfg}_suggest"
620         eval dep_ifa="\$${cfg}_if"
621         eval dep_ifn="\$${cfg}_if_any"
622
623         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
624         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
625         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
626
627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
629         enabled_all  $dep_all || disable $cfg
630         enabled_any  $dep_any || disable $cfg
631         disabled_all $dep_con || disable $cfg
632         disabled_any $dep_sel && disable $cfg
633
634         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
635
636         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
637             # filter out library deps, these do not belong in extralibs
638             is_in $dep $LIBRARY_LIST && continue
639             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
640         done
641
642         disable ${cfg}_checking
643     done
644 }
645
646 print_config(){
647     pfx=$1
648     files=$2
649     shift 2
650     map 'eval echo "$v \${$v:-no}"' "$@" |
651     awk "BEGIN { split(\"$files\", files) }
652         {
653             c = \"$pfx\" toupper(\$1);
654             v = \$2;
655             sub(/yes/, 1, v);
656             sub(/no/,  0, v);
657             for (f in files) {
658                 file = files[f];
659                 if (file ~ /\\.h\$/) {
660                     printf(\"#define %s %d\\n\", c, v) >>file;
661                 } else if (file ~ /\\.asm\$/) {
662                     printf(\"%%define %s %d\\n\", c, v) >>file;
663                 } else if (file ~ /\\.mak\$/) {
664                     n = -v ? \"\" : \"!\";
665                     printf(\"%s%s=yes\\n\", n, c) >>file;
666                 }
667             }
668         }"
669 }
670
671 print_enabled(){
672     suf=$1
673     shift
674     for v; do
675         enabled $v && printf "%s\n" ${v%$suf}
676     done
677 }
678
679 append(){
680     var=$1
681     shift
682     eval "$var=\"\$$var $*\""
683 }
684
685 prepend(){
686     var=$1
687     shift
688     eval "$var=\"$* \$$var\""
689 }
690
691 unique(){
692     var=$1
693     uniq_list=""
694     for tok in $(eval echo \$$var); do
695         uniq_list="$(filter_out $tok $uniq_list) $tok"
696     done
697     eval "$var=\"${uniq_list}\""
698 }
699
700 resolve(){
701     var=$1
702     tmpvar=
703     for entry in $(eval echo \$$var); do
704         tmpvar="$tmpvar $(eval echo \$${entry})"
705     done
706     eval "$var=\"${tmpvar}\""
707 }
708
709 add_cppflags(){
710     append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714     append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_cflags_headers(){
718     append CFLAGS_HEADERS $($cflags_filter "$@")
719 }
720
721 add_asflags(){
722     append ASFLAGS $($asflags_filter "$@")
723 }
724
725 add_objcflags(){
726     append OBJCFLAGS $($objcflags_filter "$@")
727 }
728
729 add_ldflags(){
730     append LDFLAGS $($ldflags_filter "$@")
731 }
732
733 add_ldexeflags(){
734     append LDEXEFLAGS $($ldflags_filter "$@")
735 }
736
737 add_ldsoflags(){
738     append LDSOFLAGS $($ldflags_filter "$@")
739 }
740
741 add_stripflags(){
742     append STRIPFLAGS "$@"
743 }
744
745 add_extralibs(){
746     prepend extralibs $($ldflags_filter "$@")
747 }
748
749 add_host_cppflags(){
750     append host_cppflags "$@"
751 }
752
753 add_host_cflags(){
754     append host_cflags $($host_cflags_filter "$@")
755 }
756
757 add_host_ldflags(){
758     append host_ldflags $($host_ldflags_filter "$@")
759 }
760
761 add_compat(){
762     append compat_objs $1
763     shift
764     map 'add_cppflags -D$v' "$@"
765 }
766
767 check_cmd(){
768     log "$@"
769     "$@" >> $logfile 2>&1
770 }
771
772 cc_o(){
773     eval printf '%s\\n' $CC_O
774 }
775
776 cc_e(){
777     eval printf '%s\\n' $CC_E
778 }
779
780 check_cc(){
781     log check_cc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
785 }
786
787 check_objcc(){
788     log check_objcc "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
792 }
793
794 check_cpp(){
795     log check_cpp "$@"
796     cat > $TMPC
797     log_file $TMPC
798     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
799 }
800
801 as_o(){
802     eval printf '%s\\n' $AS_O
803 }
804
805 check_as(){
806     log check_as "$@"
807     cat > $TMPS
808     log_file $TMPS
809     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
810 }
811
812 check_inline_asm(){
813     log check_inline_asm "$@"
814     name="$1"
815     code="$2"
816     shift 2
817     disable $name
818     check_cc "$@" <<EOF && enable $name
819 void foo(void){ __asm__ volatile($code); }
820 EOF
821 }
822
823 check_insn(){
824     log check_insn "$@"
825     check_inline_asm ${1}_inline "\"$2\""
826     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
827 }
828
829 check_x86asm(){
830     log check_x86asm "$@"
831     echo "$1" > $TMPS
832     log_file $TMPS
833     shift 1
834     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
835 }
836
837 ld_o(){
838     eval printf '%s\\n' $LD_O
839 }
840
841 check_ld(){
842     log check_ld "$@"
843     flags=$(filter_out '-l*' "$@")
844     libs=$(filter '-l*' "$@")
845     check_cc $($cflags_filter $flags) || return
846     flags=$($ldflags_filter $flags)
847     libs=$($ldflags_filter $libs)
848     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
849 }
850
851 print_include(){
852     hdr=$1
853     test "${hdr%.h}" = "${hdr}" &&
854         echo "#include $hdr"    ||
855         echo "#include <$hdr>"
856 }
857
858 check_code(){
859     log check_code "$@"
860     check=$1
861     headers=$2
862     code=$3
863     shift 3
864     {
865         for hdr in $headers; do
866             print_include $hdr
867         done
868         echo "int main(void) { $code; return 0; }"
869     } | check_$check "$@"
870 }
871
872 check_cppflags(){
873     log check_cppflags "$@"
874     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
875 #include <stdlib.h>;
876 EOF
877 }
878
879 test_cflags(){
880     log test_cflags "$@"
881     set -- $($cflags_filter "$@")
882     check_cc "$@" <<EOF
883 int x;
884 EOF
885 }
886
887 check_cflags(){
888     log check_cflags "$@"
889     test_cflags "$@" && add_cflags "$@"
890 }
891
892 test_objcflags(){
893     log test_objcflags "$@"
894     set -- $($objcflags_filter "$@")
895     check_objcc "$@" <<EOF
896 int x;
897 EOF
898 }
899
900 check_objcflags(){
901     log check_objcflags "$@"
902     test_objcflags "$@" && add_objcflags "$@"
903 }
904
905 test_ldflags(){
906     log test_ldflags "$@"
907     check_ld "$@" <<EOF
908 int main(void){ return 0; }
909 EOF
910 }
911
912 check_ldflags(){
913     log check_ldflags "$@"
914     test_ldflags "$@" && add_ldflags "$@"
915 }
916
917 test_stripflags(){
918     log test_stripflags "$@"
919     # call check_cc to get a fresh TMPO
920     check_cc <<EOF
921 int main(void) { return 0; }
922 EOF
923     check_cmd $strip $STRIPFLAGS "$@" $TMPO
924 }
925
926 check_stripflags(){
927     log check_stripflags "$@"
928     test_stripflags "$@" && add_stripflags "$@"
929 }
930
931 check_header(){
932     log check_header "$@"
933     header=$1
934     shift
935     disable_sanitized $header
936     check_cpp "$@" <<EOF && enable_sanitized $header
937 #include <$header>
938 int x;
939 EOF
940 }
941
942 check_func(){
943     log check_func "$@"
944     func=$1
945     shift
946     disable $func
947     check_ld "$@" <<EOF && enable $func
948 extern int $func();
949 int main(void){ $func(); }
950 EOF
951 }
952
953 check_mathfunc(){
954     log check_mathfunc "$@"
955     func=$1
956     narg=$2
957     shift 2
958     test $narg = 2 && args="f, g" || args="f"
959     disable $func
960     check_ld "$@" <<EOF && enable $func
961 #include <math.h>
962 float foo(float f, float g) { return $func($args); }
963 int main(void){ return 0; }
964 EOF
965 }
966
967 check_func_headers(){
968     log check_func_headers "$@"
969     headers=$1
970     funcs=$2
971     shift 2
972     {
973         for hdr in $headers; do
974             print_include $hdr
975         done
976         for func in $funcs; do
977             echo "long check_$func(void) { return (long) $func; }"
978         done
979         echo "int main(void) { return 0; }"
980     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
981 }
982
983 check_cpp_condition(){
984     log check_cpp_condition "$@"
985     header=$1
986     condition=$2
987     shift 2
988     check_cpp "$@" <<EOF
989 #include <$header>
990 #if !($condition)
991 #error "unsatisfied condition: $condition"
992 #endif
993 EOF
994 }
995
996 test_cflags_cpp(){
997     log test_cflags_cpp "$@"
998     flags=$1
999     condition=$2
1000     shift 2
1001     set -- $($cflags_filter "$flags")
1002     check_cpp "$@" <<EOF
1003 #if !($condition)
1004 #error "unsatisfied condition: $condition"
1005 #endif
1006 EOF
1007 }
1008
1009 check_lib(){
1010     log check_lib "$@"
1011     name="$1"
1012     headers="$2"
1013     funcs="$3"
1014     shift 3
1015     disable $name
1016     check_func_headers "$headers" "$funcs" "$@" &&
1017         enable $name && eval ${name}_extralibs="\$@"
1018 }
1019
1020 test_pkg_config(){
1021     log test_pkg_config "$@"
1022     name="$1"
1023     pkg_version="$2"
1024     pkg="${2%% *}"
1025     headers="$3"
1026     funcs="$4"
1027     shift 4
1028     disable $name
1029     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1030     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1031     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1032     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1033         enable $name &&
1034         set_sanitized "${name}_cflags"    $pkg_cflags &&
1035         set_sanitized "${name}_extralibs" $pkg_libs
1036 }
1037
1038 check_pkg_config(){
1039     log check_pkg_config "$@"
1040     name="$1"
1041     test_pkg_config "$@" &&
1042         eval add_cflags \$${name}_cflags
1043 }
1044
1045 check_exec(){
1046     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1047 }
1048
1049 check_exec_crash(){
1050     log check_exec_crash "$@"
1051     code=$(cat)
1052
1053     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1054     # are safe but may not be available everywhere.  Thus we use
1055     # raise(SIGTERM) instead.  The check is run in a subshell so we
1056     # can redirect the "Terminated" message from the shell.  SIGBUS
1057     # is not defined by standard C so it is used conditionally.
1058
1059     (check_exec "$@") >> $logfile 2>&1 <<EOF
1060 #include <signal.h>
1061 static void sighandler(int sig){
1062     raise(SIGTERM);
1063 }
1064 int foo(void){
1065     $code
1066 }
1067 int (*func_ptr)(void) = foo;
1068 int main(void){
1069     signal(SIGILL, sighandler);
1070     signal(SIGFPE, sighandler);
1071     signal(SIGSEGV, sighandler);
1072 #ifdef SIGBUS
1073     signal(SIGBUS, sighandler);
1074 #endif
1075     return func_ptr();
1076 }
1077 EOF
1078 }
1079
1080 check_type(){
1081     log check_type "$@"
1082     headers=$1
1083     type=$2
1084     shift 2
1085     disable_sanitized "$type"
1086     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1087 }
1088
1089 check_struct(){
1090     log check_struct "$@"
1091     headers=$1
1092     struct=$2
1093     member=$3
1094     shift 3
1095     disable_sanitized "${struct}_${member}"
1096     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1097         enable_sanitized "${struct}_${member}"
1098 }
1099
1100 check_builtin(){
1101     log check_builtin "$@"
1102     name=$1
1103     headers=$2
1104     builtin=$3
1105     shift 3
1106     disable "$name"
1107     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1108 }
1109
1110 check_compile_assert(){
1111     log check_compile_assert "$@"
1112     name=$1
1113     headers=$2
1114     condition=$3
1115     shift 3
1116     disable "$name"
1117     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1118 }
1119
1120 require(){
1121     log require "$@"
1122     name_version="$1"
1123     name="${1%% *}"
1124     headers="$2"
1125     func="$3"
1126     shift 3
1127     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1128 }
1129
1130 require_header(){
1131     log require "$@"
1132     header="$1"
1133     shift
1134     check_header "$header" "$@" || die "ERROR: $header not found"
1135 }
1136
1137 require_cpp_condition(){
1138     log require "$@"
1139     header="$1"
1140     condition="$2"
1141     shift 2
1142     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1143 }
1144
1145 require_pkg_config(){
1146     log require_pkg_config "$@"
1147     pkg_version="$2"
1148     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1149 }
1150
1151 hostcc_e(){
1152     eval printf '%s\\n' $HOSTCC_E
1153 }
1154
1155 hostcc_o(){
1156     eval printf '%s\\n' $HOSTCC_O
1157 }
1158
1159 check_host_cc(){
1160     log check_host_cc "$@"
1161     cat > $TMPC
1162     log_file $TMPC
1163     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1164 }
1165
1166 check_host_cpp(){
1167     log check_host_cpp "$@"
1168     cat > $TMPC
1169     log_file $TMPC
1170     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1171 }
1172
1173 check_host_cppflags(){
1174     log check_host_cppflags "$@"
1175     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1176 #include <stdlib.h>;
1177 EOF
1178 }
1179
1180 check_host_cflags(){
1181     log check_host_cflags "$@"
1182     set -- $($host_cflags_filter "$@")
1183     check_host_cc "$@" <<EOF && append host_cflags "$@"
1184 int x;
1185 EOF
1186 }
1187
1188 check_host_cpp_condition(){
1189     log check_host_cpp_condition "$@"
1190     header=$1
1191     condition=$2
1192     shift 2
1193     check_host_cpp "$@" <<EOF
1194 #include <$header>
1195 #if !($condition)
1196 #error "unsatisfied condition: $condition"
1197 #endif
1198 EOF
1199 }
1200
1201 apply(){
1202     file=$1
1203     shift
1204     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1205 }
1206
1207 cp_if_changed(){
1208     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1209     mkdir -p "$(dirname $2)"
1210     cp -f "$1" "$2"
1211 }
1212
1213 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1214 # system-dependent things.
1215
1216 AVCODEC_COMPONENTS="
1217     bsfs
1218     decoders
1219     encoders
1220     hwaccels
1221     parsers
1222 "
1223
1224 AVDEVICE_COMPONENTS="
1225     indevs
1226     outdevs
1227 "
1228 AVFILTER_COMPONENTS="
1229     filters
1230 "
1231 AVFORMAT_COMPONENTS="
1232     demuxers
1233     muxers
1234     protocols
1235 "
1236
1237 COMPONENT_LIST="
1238     $AVCODEC_COMPONENTS
1239     $AVDEVICE_COMPONENTS
1240     $AVFILTER_COMPONENTS
1241     $AVFORMAT_COMPONENTS
1242 "
1243
1244 EXAMPLE_LIST="
1245     decode_audio_example
1246     decode_video_example
1247     encode_audio_example
1248     encode_video_example
1249     filter_audio_example
1250     metadata_example
1251     output_example
1252     qsvdec_example
1253     transcode_aac_example
1254 "
1255
1256 # catchall list of things that require external libs to link
1257 EXTRALIBS_LIST="
1258     cpu_init
1259     cws2fws
1260 "
1261
1262 HWACCEL_LIBRARY_NONFREE_LIST="
1263     cuda
1264     cuvid
1265     libnpp
1266 "
1267 HWACCEL_LIBRARY_LIST="
1268     $HWACCEL_LIBRARY_NONFREE_LIST
1269     d3d11va
1270     dxva2
1271     libmfx
1272     mmal
1273     nvenc
1274     omx
1275     vaapi
1276     vda
1277     vdpau
1278 "
1279
1280 EXTERNAL_LIBRARY_GPL_LIST="
1281     libcdio
1282     libx264
1283     libx265
1284     libxavs
1285     libxvid
1286 "
1287
1288 EXTERNAL_LIBRARY_NONFREE_LIST="
1289     libfaac
1290     libfdk_aac
1291     openssl
1292 "
1293
1294 EXTERNAL_LIBRARY_VERSION3_LIST="
1295     libopencore_amrnb
1296     libopencore_amrwb
1297     libvo_aacenc
1298     libvo_amrwbenc
1299 "
1300
1301 EXTERNAL_LIBRARY_LIST="
1302     $EXTERNAL_LIBRARY_GPL_LIST
1303     $EXTERNAL_LIBRARY_NONFREE_LIST
1304     $EXTERNAL_LIBRARY_VERSION3_LIST
1305     avisynth
1306     avxsynth
1307     frei0r
1308     gnutls
1309     libbs2b
1310     libdc1394
1311     libdcadec
1312     libfontconfig
1313     libfreetype
1314     libgsm
1315     libhdcd
1316     libilbc
1317     libjack
1318     libkvazaar
1319     libmp3lame
1320     libopencv
1321     libopenh264
1322     libopenjpeg
1323     libopus
1324     libpulse
1325     librtmp
1326     libschroedinger
1327     libsnappy
1328     libspeex
1329     libtheora
1330     libtwolame
1331     libvorbis
1332     libvpx
1333     libwavpack
1334     libwebp
1335     libxcb
1336     libxcb_shm
1337     libxcb_xfixes
1338 "
1339
1340 SYSTEM_LIBRARY_LIST="
1341     bzlib
1342     zlib
1343 "
1344
1345 FEATURE_LIST="
1346     gray
1347     hardcoded_tables
1348     omx_rpi
1349     runtime_cpudetect
1350     safe_bitstream_reader
1351     shared
1352     small
1353     sram
1354     static
1355     swscale_alpha
1356 "
1357
1358 LIBRARY_LIST="
1359     avcodec
1360     avdevice
1361     avfilter
1362     avformat
1363     avresample
1364     avutil
1365     swscale
1366 "
1367
1368 LICENSE_LIST="
1369     gpl
1370     nonfree
1371     version3
1372 "
1373
1374 PROGRAM_LIST="
1375     avconv
1376     avplay
1377     avprobe
1378 "
1379
1380 SUBSYSTEM_LIST="
1381     dct
1382     doc
1383     error_resilience
1384     faan
1385     fft
1386     lsp
1387     lzo
1388     mdct
1389     network
1390     rdft
1391 "
1392
1393 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1394 CONFIG_LIST="
1395     $EXAMPLE_LIST
1396     $EXTERNAL_LIBRARY_LIST
1397     $HWACCEL_LIBRARY_LIST
1398     $FEATURE_LIST
1399     $LICENSE_LIST
1400     $LIBRARY_LIST
1401     $PROGRAM_LIST
1402     $SUBSYSTEM_LIST
1403     $SYSTEM_LIBRARY_LIST
1404     neon_clobber_test
1405     pic
1406     pod2man
1407     texi2html
1408     thumb
1409     valgrind_backtrace
1410     xmm_clobber_test
1411     $COMPONENT_LIST
1412 "
1413
1414 THREADS_LIST="
1415     pthreads
1416     w32threads
1417 "
1418
1419 ATOMICS_LIST="
1420     atomics_gcc
1421     atomics_suncc
1422     atomics_win32
1423 "
1424
1425 ARCH_LIST="
1426     aarch64
1427     alpha
1428     arm
1429     avr32
1430     avr32_ap
1431     avr32_uc
1432     bfin
1433     ia64
1434     m68k
1435     mips
1436     mips64
1437     parisc
1438     ppc
1439     ppc64
1440     s390
1441     sh4
1442     sparc
1443     sparc64
1444     tilegx
1445     tilepro
1446     tomi
1447     x86
1448     x86_32
1449     x86_64
1450 "
1451
1452 ARCH_EXT_LIST_ARM="
1453     armv5te
1454     armv6
1455     armv6t2
1456     armv8
1457     neon
1458     vfp
1459     vfpv3
1460 "
1461
1462 ARCH_EXT_LIST_X86_SIMD="
1463     amd3dnow
1464     amd3dnowext
1465     avx
1466     avx2
1467     fma3
1468     fma4
1469     mmx
1470     mmxext
1471     sse
1472     sse2
1473     sse3
1474     sse4
1475     sse42
1476     ssse3
1477     xop
1478 "
1479
1480 ARCH_EXT_LIST_PPC="
1481     altivec
1482     dcbzl
1483     ldbrx
1484     power8
1485     ppc4xx
1486     vsx
1487 "
1488
1489 ARCH_EXT_LIST_X86="
1490     $ARCH_EXT_LIST_X86_SIMD
1491     cpunop
1492     i686
1493 "
1494
1495 ARCH_EXT_LIST_MIPS="
1496     loongson
1497     mips32r1
1498     mips64r1
1499     mips32r2
1500     mips64r2
1501     mips32r6
1502     mips64r6
1503 "
1504
1505 ARCH_EXT_LIST="
1506     $ARCH_EXT_LIST_ARM
1507     $ARCH_EXT_LIST_MIPS
1508     $ARCH_EXT_LIST_PPC
1509     $ARCH_EXT_LIST_X86
1510     vis
1511 "
1512
1513 ARCH_FEATURES="
1514     aligned_stack
1515     fast_64bit
1516     fast_clz
1517     fast_cmov
1518     local_aligned_8
1519     local_aligned_16
1520     local_aligned_32
1521     simd_align_16
1522     simd_align_32
1523 "
1524
1525 BUILTIN_LIST="
1526     atomic_cas_ptr
1527     machine_rw_barrier
1528     MemoryBarrier
1529     mm_empty
1530     rdtsc
1531     sem_timedwait
1532     sync_val_compare_and_swap
1533 "
1534 HAVE_LIST_CMDLINE="
1535     inline_asm
1536     symver
1537     x86asm
1538 "
1539
1540 HAVE_LIST_PUB="
1541     bigendian
1542     fast_unaligned
1543 "
1544
1545 HEADERS_LIST="
1546     AVFoundation_AVFoundation_h
1547     arpa_inet_h
1548     cdio_paranoia_h
1549     cdio_paranoia_paranoia_h
1550     dispatch_dispatch_h
1551     dev_bktr_ioctl_bt848_h
1552     dev_bktr_ioctl_meteor_h
1553     dev_ic_bt8xx_h
1554     dev_video_bktr_ioctl_bt848_h
1555     dev_video_meteor_ioctl_meteor_h
1556     direct_h
1557     dxgidebug_h
1558     dxva_h
1559     io_h
1560     mach_mach_time_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-avserver|--disable-avserver*)
2827             warn "avserver has been removed, the ${opt} option is only"\
2828                  "provided for compatibility and will be removed in the future"
2829         ;;
2830         --enable-yasm|--disable-yasm)
2831             warn "The ${opt} option is only provided for compatibility and will be\n"\
2832                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2833             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2834         ;;
2835         --enable-?*|--disable-?*)
2836             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2837             if is_in $option $COMPONENT_LIST; then
2838                 test $action = disable && action=unset
2839                 eval $action \$$(toupper ${option%s})_LIST
2840             elif is_in $option $CMDLINE_SELECT; then
2841                 $action $option
2842             else
2843                 die_unknown $opt
2844             fi
2845         ;;
2846         --list-*)
2847             NAME="${opt#--list-}"
2848             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2849             NAME=${NAME%s}
2850             eval show_list $NAME \$$(toupper $NAME)_LIST
2851         ;;
2852         --help|-h) show_help
2853         ;;
2854         --quiet|-q) quiet=yes
2855         ;;
2856         *)
2857             optname="${opt%%=*}"
2858             optname="${optname#--}"
2859             optname=$(echo "$optname" | sed 's/-/_/g')
2860             if is_in $optname $CMDLINE_SET; then
2861                 eval $optname='$optval'
2862             elif is_in $optname $CMDLINE_APPEND; then
2863                 append $optname "$optval"
2864             else
2865                 die_unknown $opt
2866             fi
2867         ;;
2868     esac
2869 done
2870
2871 for e in $env; do
2872     eval "export $e"
2873 done
2874
2875 disabled logging && logfile=/dev/null
2876
2877 # Die early if licensing-related configure options are incompatible.
2878 die_license_disabled() {
2879     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2880 }
2881
2882 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2883 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2884 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2885
2886 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2887
2888 enabled_all gnutls openssl &&
2889     die "GnuTLS and OpenSSL must not be enabled at the same time."
2890
2891 # Disable all the library-specific components if the library itself
2892 # is disabled, see AVCODEC_LIST and following _LIST variables.
2893
2894 disable_components(){
2895     disabled ${1} && disable $(
2896         eval components="\$$(toupper ${1})_COMPONENTS"
2897         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2898     )
2899 }
2900
2901 map 'disable_components $v' $LIBRARY_LIST
2902
2903 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2904 set >> $logfile
2905
2906 case "$toolchain" in
2907     *-asan)
2908         cc_default="${toolchain%-asan}"
2909         add_cflags  -fsanitize=address
2910         add_ldflags -fsanitize=address
2911     ;;
2912     *-msan)
2913         cc_default="${toolchain%-msan}"
2914         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2915         add_ldflags -fsanitize=memory
2916     ;;
2917     *-tsan)
2918         cc_default="${toolchain%-tsan}"
2919         add_cflags  -fsanitize=thread -fPIE
2920         add_ldflags -fsanitize=thread -pie
2921         case "$toolchain" in
2922             gcc-tsan)
2923                 add_cflags  -fPIC
2924                 add_ldflags -fPIC
2925                 ;;
2926         esac
2927     ;;
2928     *-usan)
2929         cc_default="${toolchain%-usan}"
2930         add_cflags  -fsanitize=undefined
2931         add_ldflags -fsanitize=undefined
2932         case "$toolchain" in
2933             clang-usan)
2934                 add_cflags -O1
2935                 ;;
2936         esac
2937     ;;
2938     valgrind-*)
2939         target_exec_default="valgrind"
2940         case "$toolchain" in
2941             valgrind-massif)
2942                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2943                 ;;
2944             valgrind-memcheck)
2945                 target_exec_args="--track-origins=yes --leak-check=full"
2946                 ;;
2947         esac
2948     ;;
2949     msvc)
2950         # Check whether the current MSVC version needs the C99 converter.
2951         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2952         # support enough of C99 to build libav. Default to the new
2953         # behaviour if the regexp was unable to match anything, since this
2954         # successfully parses the version number of existing supported
2955         # versions that require the converter (MSVC 2010 and 2012).
2956         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2957         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2958             cc_default="cl"
2959         else
2960             cc_default="c99wrap cl"
2961         fi
2962         ld_default="$source_path/compat/windows/mslink"
2963         nm_default="dumpbin -symbols"
2964         ar_default="lib"
2965         case "$arch" in
2966         arm*)
2967             as_default="armasm"
2968             ;;
2969         esac
2970         target_os_default="win32"
2971         # Use a relative path for TMPDIR. This makes sure all the
2972         # ffconf temp files are written with a relative path, avoiding
2973         # issues with msys/win32 path conversion for MSVC parameters
2974         # such as -Fo<file> or -out:<file>.
2975         TMPDIR=.
2976     ;;
2977     icl)
2978         cc_default="icl"
2979         ld_default="xilink"
2980         nm_default="dumpbin -symbols"
2981         ar_default="xilib"
2982         target_os_default="win32"
2983         TMPDIR=.
2984     ;;
2985     gcov)
2986         add_cflags  -fprofile-arcs -ftest-coverage
2987         add_ldflags -fprofile-arcs -ftest-coverage
2988     ;;
2989     llvm-cov)
2990         add_cflags -fprofile-arcs -ftest-coverage
2991         add_ldflags --coverage
2992     ;;
2993     hardened)
2994         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2995         add_cflags   -fno-strict-overflow -fstack-protector-all
2996         add_ldflags  -Wl,-z,relro -Wl,-z,now
2997     ;;
2998     ?*)
2999         die "Unknown toolchain $toolchain"
3000     ;;
3001 esac
3002
3003 test -n "$cross_prefix" && enable cross_compile
3004
3005 if enabled cross_compile; then
3006     test -n "$arch" && test -n "$target_os" ||
3007         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3008 fi
3009
3010 ar_default="${cross_prefix}${ar_default}"
3011 cc_default="${cross_prefix}${cc_default}"
3012 objcc_default="${cross_prefix}${objcc_default}"
3013 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3014 nm_default="${cross_prefix}${nm_default}"
3015 pkg_config_default="${cross_prefix}${pkg_config_default}"
3016 ranlib="${cross_prefix}${ranlib}"
3017 strip="${cross_prefix}${strip}"
3018
3019 sysinclude_default="${sysroot}/usr/include"
3020
3021 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3022 enabled cross_compile || host_cc_default=$cc
3023 set_default host_cc
3024
3025 if ! $pkg_config --version >/dev/null 2>&1; then
3026     warn "$pkg_config not found, library detection may fail."
3027     pkg_config=false
3028 fi
3029
3030 exesuf() {
3031     case $1 in
3032         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3033     esac
3034 }
3035
3036 EXESUF=$(exesuf $target_os)
3037 HOSTEXESUF=$(exesuf $host_os)
3038
3039 # set temporary file name
3040 : ${TMPDIR:=$TEMPDIR}
3041 : ${TMPDIR:=$TMP}
3042 : ${TMPDIR:=/tmp}
3043
3044 if ! check_cmd mktemp -u XXXXXX; then
3045     # simple replacement for missing mktemp
3046     # NOT SAFE FOR GENERAL USE
3047     mktemp(){
3048         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3049         echo "$tmpname"
3050         mkdir "$tmpname"
3051     }
3052 fi
3053
3054 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3055     die "Unable to create temporary directory in $TMPDIR."
3056
3057 tmpfile(){
3058     tmp="${AVTMPDIR}/test"$2
3059     (set -C; exec > $tmp) 2> /dev/null ||
3060         die "Unable to create temporary file in $AVTMPDIR."
3061     eval $1=$tmp
3062 }
3063
3064 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3065 trap 'exit 2' INT
3066
3067 tmpfile TMPASM .asm
3068 tmpfile TMPC   .c
3069 tmpfile TMPE   $EXESUF
3070 tmpfile TMPH   .h
3071 tmpfile TMPO   .o
3072 tmpfile TMPS   .S
3073 tmpfile TMPSH  .sh
3074 tmpfile TMPV   .ver
3075
3076 unset -f mktemp
3077
3078 chmod +x $TMPE
3079
3080 # make sure we can execute files in $TMPDIR
3081 cat > $TMPSH 2>> $logfile <<EOF
3082 #! /bin/sh
3083 EOF
3084 chmod +x $TMPSH >> $logfile 2>&1
3085 if ! $TMPSH >> $logfile 2>&1; then
3086     cat <<EOF
3087 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3088 variable to another directory and make sure that it is not mounted noexec.
3089 EOF
3090     die "Sanity test failed."
3091 fi
3092
3093 armasm_flags(){
3094     for flag; do
3095         case $flag in
3096             # Filter out MSVC cl.exe options from cflags that shouldn't
3097             # be passed to gas-preprocessor
3098             -M[TD]*)                                            ;;
3099             *)                  echo $flag                      ;;
3100         esac
3101    done
3102 }
3103
3104 cparser_flags(){
3105     for flag; do
3106         case $flag in
3107             -Wno-switch)             echo -Wno-switch-enum ;;
3108             -Wno-format-zero-length) ;;
3109             -Wdisabled-optimization) ;;
3110             -Wno-pointer-sign)       echo -Wno-other ;;
3111             *)                       echo $flag ;;
3112         esac
3113     done
3114 }
3115
3116 msvc_common_flags(){
3117     for flag; do
3118         case $flag in
3119             # In addition to specifying certain flags under the compiler
3120             # specific filters, they must be specified here as well or else the
3121             # generic catch all at the bottom will print the original flag.
3122             -Wall)                ;;
3123             -Wextra)              ;;
3124             -std=c99)             ;;
3125             # Common flags
3126             -fomit-frame-pointer) ;;
3127             -g)                   echo -Z7 ;;
3128             -fno-math-errno)      ;;
3129             -fno-common)          ;;
3130             -fno-signed-zeros)    ;;
3131             -fPIC)                ;;
3132             -mthumb)              ;;
3133             -march=*)             ;;
3134             -lz)                  echo zlib.lib ;;
3135             -lx264)               echo libx264.lib ;;
3136             -l*)                  echo ${flag#-l}.lib ;;
3137             -L*)                  echo -libpath:${flag#-L} ;;
3138             *)                    echo $flag ;;
3139         esac
3140     done
3141 }
3142
3143 msvc_flags(){
3144     msvc_common_flags "$@"
3145     for flag; do
3146         case $flag in
3147             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3148                                        -wd4554 ;;
3149             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3150                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3151                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3152                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3153         esac
3154     done
3155 }
3156
3157 icl_flags(){
3158     msvc_common_flags "$@"
3159     for flag; do
3160         case $flag in
3161             # Despite what Intel's documentation says -Wall, which is supported
3162             # on Windows, does enable remarks so disable them here.
3163             -Wall)                echo $flag -Qdiag-disable:remark ;;
3164             -std=c99)             echo -Qstd=c99 ;;
3165         esac
3166     done
3167 }
3168
3169 pgi_flags(){
3170     for flag; do
3171         case $flag in
3172             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3173             -fomit-frame-pointer) echo -Mnoframe ;;
3174             -g)                   echo -gopt ;;
3175             *)                    echo $flag ;;
3176         esac
3177     done
3178 }
3179
3180 suncc_flags(){
3181     for flag; do
3182         case $flag in
3183             -march=*|-mcpu=*)
3184                 case "${flag#*=}" in
3185                     native)                   echo -xtarget=native       ;;
3186                     v9|niagara)               echo -xarch=sparc          ;;
3187                     ultrasparc)               echo -xarch=sparcvis       ;;
3188                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3189                     i586|pentium)             echo -xchip=pentium        ;;
3190                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3191                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3192                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3193                     pentium4*)          echo -xtarget=pentium4           ;;
3194                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3195                     *-sse3)             echo -xarch=sse3                 ;;
3196                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3197                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3198                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3199                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3200                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3201                     k8|opteron|athlon64|athlon-fx)
3202                                                echo -xarch=sse2a         ;;
3203                     athlon*)                   echo -xarch=pentium_proa  ;;
3204                 esac
3205                 ;;
3206             -std=c99)             echo -xc99              ;;
3207             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3208             -fPIC)                echo -KPIC -xcode=pic32 ;;
3209             -W*,*)                echo $flag              ;;
3210             -f*-*|-W*|-mimpure-text)                      ;;
3211             -shared)              echo -G                 ;;
3212             *)                    echo $flag              ;;
3213         esac
3214     done
3215 }
3216
3217 tms470_flags(){
3218     for flag; do
3219         case $flag in
3220             -march=*|-mcpu=*)
3221                 case "${flag#*=}" in
3222                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3223                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3224                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3225                     armv6*|arm11*)          echo -mv=6   ;;
3226                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3227                                             echo -mv=5e  ;;
3228                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3229                 esac
3230                 ;;
3231             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3232             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3233             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3234             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3235             -msoft-float)   echo --float_support=vfplib       ;;
3236             -O[0-3]|-mf=*)  echo $flag                        ;;
3237             -g)             echo -g -mn                       ;;
3238             -pds=*)         echo $flag                        ;;
3239             -D*|-I*)        echo $flag                        ;;
3240             --gcc|--abi=*)  echo $flag                        ;;
3241             -me)            echo $flag                        ;;
3242         esac
3243     done
3244 }
3245
3246 probe_cc(){
3247     pfx=$1
3248     _cc=$2
3249
3250     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3251     unset _ld_o _ldflags _ld_lib _ld_path
3252     unset _depflags _DEPCMD _DEPFLAGS
3253     _flags_filter=echo
3254
3255     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3256         _type=llvm_gcc
3257         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3258         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3260         _cflags_speed='-O3'
3261         _cflags_size='-Os'
3262     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3263         _type=gcc
3264         gcc_version=$($_cc --version | head -n1)
3265         gcc_basever=$($_cc -dumpversion)
3266         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3267         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3268         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3269         if ! $_cc -dumpversion | grep -q '^2\.'; then
3270             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3271         fi
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3275         _type=icc
3276         _ident=$($_cc --version | head -n1)
3277         _depflags='-MMD'
3278         _cflags_speed='-O3'
3279         _cflags_size='-Os'
3280         _cflags_noopt='-O1'
3281     elif $_cc -v 2>&1 | grep -q xlc; then
3282         _type=xlc
3283         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3284         _cflags_speed='-O5'
3285         _cflags_size='-O5 -qcompact'
3286     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3287         test -d "$sysroot" || die "No valid sysroot specified."
3288         _type=armcc
3289         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3290         armcc_conf="$PWD/armcc.conf"
3291         $_cc --arm_linux_configure                 \
3292              --arm_linux_config_file="$armcc_conf" \
3293              --configure_sysroot="$sysroot"        \
3294              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3295              die "Error creating armcc configuration file."
3296         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3297         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3298         as_default="${cross_prefix}gcc"
3299         _depflags='-MMD'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3303         _type=tms470
3304         _ident=$($_cc -version | head -n1 | tr -s ' ')
3305         _flags='--gcc --abi=eabi -me'
3306         _cc_e='-ppl -fe=$@'
3307         _cc_o='-fe=$@'
3308         _depflags='-ppa -ppd=$(@:.o=.d)'
3309         _cflags_speed='-O3 -mf=5'
3310         _cflags_size='-O3 -mf=2'
3311         _flags_filter=tms470_flags
3312     elif $_cc -v 2>&1 | grep -q clang; then
3313         _type=clang
3314         _ident=$($_cc --version 2>/dev/null | head -n1)
3315         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3316         _cflags_speed='-O3'
3317         _cflags_size='-Os'
3318     elif $_cc -V 2>&1 | grep -q Sun; then
3319         _type=suncc
3320         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3321         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3322         _DEPFLAGS='-xM1 -xc99'
3323         _ldflags='-std=c99'
3324         _cflags_speed='-O5'
3325         _cflags_size='-O5 -xspace'
3326         _flags_filter=suncc_flags
3327     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3328         _type=pathscale
3329         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3330         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3331         _cflags_speed='-O2'
3332         _cflags_size='-Os'
3333         _flags_filter='filter_out -Wdisabled-optimization'
3334     elif $_cc -v 2>&1 | grep -q Open64; then
3335         _type=open64
3336         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3337         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3338         _cflags_speed='-O2'
3339         _cflags_size='-Os'
3340         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3341     elif $_cc -V 2>&1 | grep -q Portland; then
3342         _type=pgi
3343         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3344         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3345         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3346         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3347         _cflags_noopt="-O1"
3348         _flags_filter=pgi_flags
3349     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3350         _type=armasm
3351         _ident=$($_cc | head -n1)
3352         # 4509: "This form of conditional instruction is deprecated"
3353         _flags="-nologo -ignore 4509"
3354         _flags_filter=armasm_flags
3355     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3356         _type=msvc
3357         _ident=$($_cc 2>&1 | head -n1)
3358         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3359         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3360         _cflags_speed="-O2"
3361         _cflags_size="-O1"
3362         _cflags_noopt="-O1"
3363         if $_cc -nologo- 2>&1 | grep -q Linker; then
3364             _ld_o='-out:$@'
3365         else
3366             _ld_o='-Fe$@'
3367         fi
3368         _cc_o='-Fo$@'
3369         _cc_e='-P -Fi$@'
3370         _flags_filter=msvc_flags
3371         _ld_lib='lib%.a'
3372         _ld_path='-libpath:'
3373         _flags='-nologo'
3374     elif $_cc 2>&1 | grep -q Intel; then
3375         _type=icl
3376         _ident=$($_cc 2>&1 | head -n1)
3377         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3378         # Not only is O3 broken on 13.x+ but it is slower on all previous
3379         # versions (tested) as well.
3380         _cflags_speed="-O2"
3381         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3382         if $_cc 2>&1 | grep -q Linker; then
3383             _ld_o='-out:$@'
3384         else
3385             _ld_o='-Fe$@'
3386         fi
3387         _cc_o='-Fo$@'
3388         _cc_e='-P'
3389         _flags_filter=icl_flags
3390         _ld_lib='lib%.a'
3391         _ld_path='-libpath:'
3392         # -Qdiag-error to make icl error when seeing certain unknown arguments
3393         _flags='-nologo -Qdiag-error:4044,10157'
3394         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3395         # with MSVC which enables it by default.
3396         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3397     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3398         # lld can emulate multiple different linkers; in ms link.exe mode,
3399         # the -? parameter gives the help output which contains an identifyable
3400         # string, while it gives an error in other modes.
3401         _type=lld-link
3402         # The link.exe mode doesn't have a switch for getting the version,
3403         # but we can force it back to gnu mode and get the version from there.
3404         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3405         _ld_o='-out:$@'
3406         _flags_filter=msvc_flags
3407         _ld_lib='lib%.a'
3408         _ld_path='-libpath:'
3409     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3410         _type=cparser
3411         _ident=$($_cc --version | head -n1)
3412         _depflags='-MMD'
3413         _cflags_speed='-O4'
3414         _cflags_size='-O2'
3415         _flags_filter=cparser_flags
3416     fi
3417
3418     eval ${pfx}_type=\$_type
3419     eval ${pfx}_ident=\$_ident
3420 }
3421
3422 set_ccvars(){
3423     eval ${1}_C=\${_cc_c-\${${1}_C}}
3424     eval ${1}_E=\${_cc_e-\${${1}_E}}
3425     eval ${1}_O=\${_cc_o-\${${1}_O}}
3426
3427     if [ -n "$_depflags" ]; then
3428         eval ${1}_DEPFLAGS=\$_depflags
3429     else
3430         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3431         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3432         eval DEP${1}FLAGS=\$_flags
3433     fi
3434 }
3435
3436 probe_cc cc "$cc"
3437 cflags_filter=$_flags_filter
3438 cflags_speed=$_cflags_speed
3439 cflags_size=$_cflags_size
3440 cflags_noopt=$_cflags_noopt
3441 add_cflags $_flags $_cflags
3442 cc_ldflags=$_ldflags
3443 set_ccvars CC
3444
3445 probe_cc hostcc "$host_cc"
3446 host_cflags_filter=$_flags_filter
3447 host_cflags_speed=$_cflags_speed
3448 add_host_cflags  $_flags $_cflags
3449 set_ccvars HOSTCC
3450
3451 test -n "$cc_type" && enable $cc_type ||
3452     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3453
3454 : ${as_default:=$cc}
3455 : ${objcc_default:=$cc}
3456 : ${dep_cc_default:=$cc}
3457 : ${ld_default:=$cc}
3458 : ${host_ld_default:=$host_cc}
3459 set_default ar as objcc dep_cc ld host_ld
3460
3461 probe_cc as "$as"
3462 asflags_filter=$_flags_filter
3463 add_asflags $_flags $_cflags
3464 set_ccvars AS
3465
3466 probe_cc objcc "$objcc"
3467 objcflags_filter=$_flags_filter
3468 add_objcflags $_flags $_cflags
3469 set_ccvars OBJC
3470
3471 probe_cc ld "$ld"
3472 ldflags_filter=$_flags_filter
3473 add_ldflags $_flags $_ldflags
3474 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3475 LD_O=${_ld_o-$LD_O}
3476 LD_LIB=${_ld_lib-$LD_LIB}
3477 LD_PATH=${_ld_path-$LD_PATH}
3478
3479 probe_cc hostld "$host_ld"
3480 host_ldflags_filter=$_flags_filter
3481 add_host_ldflags $_flags $_ldflags
3482 HOSTLD_O=${_ld_o-$HOSTLD_O}
3483
3484 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3485     probe_cc depcc "$dep_cc"
3486     CCDEP=${_DEPCMD:-$DEPCMD}
3487     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3488     DEPCCFLAGS=$_flags
3489 fi
3490
3491 if $ar 2>&1 | grep -q Microsoft; then
3492     arflags="-nologo"
3493     ar_o='-out:$@'
3494 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3495     arflags="rq"
3496     ar_o='$@'
3497 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3498     arflags='-Xany -r -c'
3499     ar_o='$@'
3500 else
3501     arflags="rc"
3502     ar_o='$@'
3503 fi
3504
3505 add_cflags $extra_cflags
3506 add_objcflags $extra_objcflags
3507 add_asflags $extra_cflags
3508
3509 if test -n "$sysroot"; then
3510     case "$cc_type" in
3511         gcc|llvm_gcc|clang)
3512             add_cppflags --sysroot="$sysroot"
3513             add_ldflags --sysroot="$sysroot"
3514         ;;
3515         tms470)
3516             add_cppflags -I"$sysinclude"
3517             add_ldflags  --sysroot="$sysroot"
3518         ;;
3519     esac
3520 fi
3521
3522 if test "$cpu" = host; then
3523     enabled cross_compile &&
3524         die "--cpu=host makes no sense when cross-compiling."
3525
3526     case "$cc_type" in
3527         gcc|llvm_gcc)
3528             check_native(){
3529                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3530                 sed -n "/cc1.*$1=/{
3531                             s/.*$1=\\([^ ]*\\).*/\\1/
3532                             p
3533                             q
3534                         }" $TMPE
3535             }
3536             cpu=$(check_native -march || check_native -mcpu)
3537         ;;
3538     esac
3539
3540     test "${cpu:-host}" = host &&
3541         die "--cpu=host not supported with compiler $cc"
3542 fi
3543
3544 # Deal with common $arch aliases
3545 case "$arch" in
3546     aarch64|arm64)
3547         arch="aarch64"
3548     ;;
3549     arm*)
3550         arch="arm"
3551     ;;
3552     mips*|IP*)
3553         case "$arch" in
3554         *el)
3555             add_cppflags -EL
3556             add_ldflags -EL
3557         ;;
3558         *eb)
3559             add_cppflags -EB
3560             add_ldflags -EB
3561         ;;
3562         esac
3563         arch="mips"
3564     ;;
3565     parisc*|hppa*)
3566         arch="parisc"
3567     ;;
3568     "Power Macintosh"|ppc*|powerpc*)
3569         arch="ppc"
3570     ;;
3571     s390|s390x)
3572         arch="s390"
3573     ;;
3574     sh4|sh)
3575         arch="sh4"
3576     ;;
3577     sun4u|sparc*)
3578         arch="sparc"
3579     ;;
3580     tilegx|tile-gx)
3581         arch="tilegx"
3582     ;;
3583     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3584         arch="x86"
3585     ;;
3586 esac
3587
3588 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3589 enable $arch
3590
3591 # Add processor-specific flags
3592 if enabled aarch64; then
3593
3594     case $cpu in
3595         armv*)
3596             cpuflags="-march=$cpu"
3597         ;;
3598         *)
3599             cpuflags="-mcpu=$cpu"
3600         ;;
3601     esac
3602
3603 elif enabled alpha; then
3604
3605     cpuflags="-mcpu=$cpu"
3606
3607 elif enabled arm; then
3608
3609     check_arm_arch() {
3610         check_cpp_condition stddef.h \
3611             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3612             $cpuflags
3613     }
3614
3615     probe_arm_arch() {
3616         if   check_arm_arch 4;        then echo armv4
3617         elif check_arm_arch 4T;       then echo armv4t
3618         elif check_arm_arch 5;        then echo armv5
3619         elif check_arm_arch 5E;       then echo armv5e
3620         elif check_arm_arch 5T;       then echo armv5t
3621         elif check_arm_arch 5TE;      then echo armv5te
3622         elif check_arm_arch 5TEJ;     then echo armv5te
3623         elif check_arm_arch 6;        then echo armv6
3624         elif check_arm_arch 6J;       then echo armv6j
3625         elif check_arm_arch 6K;       then echo armv6k
3626         elif check_arm_arch 6Z;       then echo armv6z
3627         elif check_arm_arch 6ZK;      then echo armv6zk
3628         elif check_arm_arch 6T2;      then echo armv6t2
3629         elif check_arm_arch 7;        then echo armv7
3630         elif check_arm_arch 7A  7_A;  then echo armv7-a
3631         elif check_arm_arch 7S;       then echo armv7-a
3632         elif check_arm_arch 7R  7_R;  then echo armv7-r
3633         elif check_arm_arch 7M  7_M;  then echo armv7-m
3634         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3635         elif check_arm_arch 8A  8_A;  then echo armv8-a
3636         fi
3637     }
3638
3639     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3640
3641     case $cpu in
3642         armv*)
3643             cpuflags="-march=$cpu"
3644             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3645         ;;
3646         *)
3647             cpuflags="-mcpu=$cpu"
3648             case $cpu in
3649                 cortex-a*)                               subarch=armv7a  ;;
3650                 cortex-r*)                               subarch=armv7r  ;;
3651                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3652                 arm11*)                                  subarch=armv6   ;;
3653                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3654                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3655                 *)                             subarch=$(probe_arm_arch) ;;
3656             esac
3657         ;;
3658     esac
3659
3660     case "$subarch" in
3661         armv5t*)    enable fast_clz                ;;
3662         armv[6-8]*) enable fast_clz fast_unaligned ;;
3663     esac
3664
3665 elif enabled avr32; then
3666
3667     case $cpu in
3668         ap7[02]0[0-2])
3669             subarch="avr32_ap"
3670             cpuflags="-mpart=$cpu"
3671         ;;
3672         ap)
3673             subarch="avr32_ap"
3674             cpuflags="-march=$cpu"
3675         ;;
3676         uc3[ab]*)
3677             subarch="avr32_uc"
3678             cpuflags="-mcpu=$cpu"
3679         ;;
3680         uc)
3681             subarch="avr32_uc"
3682             cpuflags="-march=$cpu"
3683         ;;
3684     esac
3685
3686 elif enabled bfin; then
3687
3688     cpuflags="-mcpu=$cpu"
3689
3690 elif enabled mips; then
3691
3692     cpuflags="-march=$cpu"
3693
3694 elif enabled ppc; then
3695
3696     disable ldbrx
3697
3698     case $(tolower $cpu) in
3699         601|ppc601|powerpc601)
3700             cpuflags="-mcpu=601"
3701             disable altivec
3702         ;;
3703         603*|ppc603*|powerpc603*)
3704             cpuflags="-mcpu=603"
3705             disable altivec
3706         ;;
3707         604*|ppc604*|powerpc604*)
3708             cpuflags="-mcpu=604"
3709             disable altivec
3710         ;;
3711         g3|75*|ppc75*|powerpc75*)
3712             cpuflags="-mcpu=750"
3713             disable altivec
3714         ;;
3715         g4|745*|ppc745*|powerpc745*)
3716             cpuflags="-mcpu=7450"
3717             disable vsx
3718         ;;
3719         74*|ppc74*|powerpc74*)
3720             cpuflags="-mcpu=7400"
3721             disable vsx
3722         ;;
3723         g5|970|ppc970|powerpc970)
3724             cpuflags="-mcpu=970"
3725             disable vsx
3726         ;;
3727         power[3-6]*)
3728             cpuflags="-mcpu=$cpu"
3729             disable vsx
3730         ;;
3731         power[7-8]*)
3732             cpuflags="-mcpu=$cpu"
3733             enable ldbrx
3734         ;;
3735         cell)
3736             cpuflags="-mcpu=cell"
3737             enable ldbrx
3738             disable vsx
3739         ;;
3740         e500mc)
3741             cpuflags="-mcpu=e500mc"
3742             disable altivec
3743         ;;
3744         e500v2)
3745             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3746             disable altivec
3747             disable dcbzl
3748         ;;
3749         e500)
3750             cpuflags="-mcpu=8540 -mhard-float"
3751             disable altivec
3752             disable dcbzl
3753         ;;
3754     esac
3755
3756 elif enabled sparc; then
3757
3758     case $cpu in
3759         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3760             cpuflags="-mcpu=$cpu"
3761         ;;
3762         ultrasparc*|niagara[234])
3763             cpuflags="-mcpu=$cpu"
3764         ;;
3765     esac
3766
3767 elif enabled x86; then
3768
3769     case $cpu in
3770         i[345]86|pentium)
3771             cpuflags="-march=$cpu"
3772             disable i686
3773             disable mmx
3774         ;;
3775         # targets that do NOT support nopl and conditional mov (cmov)
3776         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3777             cpuflags="-march=$cpu"
3778             disable i686
3779         ;;
3780         # targets that do support nopl and conditional mov (cmov)
3781         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3782             cpuflags="-march=$cpu"
3783             enable i686
3784             enable fast_cmov
3785         ;;
3786         # targets that do support conditional mov but on which it's slow
3787         pentium4|pentium4m|prescott|nocona)
3788             cpuflags="-march=$cpu"
3789             enable i686
3790             disable fast_cmov
3791         ;;
3792     esac
3793
3794 fi
3795
3796 if [ "$cpu" != generic ]; then
3797     add_cflags  $cpuflags
3798     add_asflags $cpuflags
3799     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3800 fi
3801
3802 # compiler sanity check
3803 check_exec <<EOF
3804 int main(void){ return 0; }
3805 EOF
3806 if test "$?" != 0; then
3807     echo "$cc is unable to create an executable file."
3808     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3809         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3810         echo "Only do this if you know what cross compiling means."
3811     fi
3812     die "C compiler test failed."
3813 fi
3814
3815 add_cppflags -D_ISOC99_SOURCE
3816
3817 # some compilers silently accept -std=c11, so we also need to check that the
3818 # version macro is defined properly
3819 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3820     add_cflags -std=c11 ||
3821     check_cflags -std=c99
3822
3823 check_cppflags -D_FILE_OFFSET_BITS=64
3824 check_cppflags -D_LARGEFILE_SOURCE
3825
3826 add_host_cppflags -D_ISOC99_SOURCE
3827 check_host_cflags -std=c99
3828 check_host_cflags -Wall
3829 check_host_cflags $host_cflags_speed
3830
3831 check_64bit(){
3832     arch32=$1
3833     arch64=$2
3834     expr=$3
3835     check_code cc "" "int test[2*($expr) - 1]" &&
3836         subarch=$arch64 || subarch=$arch32
3837 }
3838
3839 case "$arch" in
3840     aarch64|alpha|ia64)
3841         spic=$shared
3842     ;;
3843     mips)
3844         check_64bit mips mips64 '_MIPS_SIM > 1'
3845         spic=$shared
3846     ;;
3847     parisc)
3848         check_64bit parisc parisc64 'sizeof(void *) > 4'
3849         spic=$shared
3850     ;;
3851     ppc)
3852         check_64bit ppc ppc64 'sizeof(void *) > 4'
3853         spic=$shared
3854     ;;
3855     s390)
3856         check_64bit s390 s390x 'sizeof(void *) > 4'
3857         spic=$shared
3858     ;;
3859     sparc)
3860         check_64bit sparc sparc64 'sizeof(void *) > 4'
3861         spic=$shared
3862     ;;
3863     x86)
3864         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3865         if test "$subarch" = "x86_64"; then
3866             spic=$shared
3867         fi
3868     ;;
3869 esac
3870
3871 enable $subarch
3872 enabled spic && enable_weak pic
3873
3874 enabled x86_64 && objformat=elf64 || objformat="elf32"
3875
3876 # OS specific
3877 case $target_os in
3878     aix)
3879         SHFLAGS=-shared
3880         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3881         enabled shared && add_ldflags -Wl,-brtl
3882         ;;
3883     android)
3884         disable symver
3885         enable section_data_rel_ro
3886         SLIB_INSTALL_NAME='$(SLIBNAME)'
3887         SLIB_INSTALL_LINKS=
3888         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3889         ;;
3890     haiku)
3891         prefix_default="/boot/common"
3892         network_extralibs="-lnetwork"
3893         host_extralibs=
3894         ;;
3895     sunos)
3896         SHFLAGS='-shared -Wl,-h,$$(@F)'
3897         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3898         network_extralibs="-lsocket -lnsl"
3899         # When using suncc to build, the Solaris linker will mark
3900         # an executable with each instruction set encountered by
3901         # the Solaris assembler.  As our libraries contain their own
3902         # guards for processor-specific code, instead suppress
3903         # generation of the HWCAPS ELF section on Solaris x86 only.
3904         enabled_all suncc x86 &&
3905             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3906             add_ldflags -Wl,-M,mapfile
3907         nm_default='nm -P -g'
3908         version_script='-M'
3909         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3910         ;;
3911     netbsd)
3912         disable symver
3913         oss_indev_extralibs="-lossaudio"
3914         oss_outdev_extralibs="-lossaudio"
3915         ;;
3916     openbsd|bitrig)
3917         disable symver
3918         SHFLAGS='-shared'
3919         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3920         SLIB_INSTALL_LINKS=
3921         oss_indev_extralibs="-lossaudio"
3922         oss_outdev_extralibs="-lossaudio"
3923         ;;
3924     dragonfly)
3925         disable symver
3926         ;;
3927     freebsd)
3928         ;;
3929     bsd/os)
3930         add_extralibs -lpoll -lgnugetopt
3931         ;;
3932     darwin)
3933         enabled ppc && add_asflags -force_cpusubtype_ALL
3934         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3935         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3936         add_ldflags -Wl,-dynamic,-search_paths_first
3937         check_cflags -Werror=partial-availability
3938         SLIBSUF=".dylib"
3939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3941         enabled x86_64 && objformat="macho64" || objformat="macho32"
3942         enabled_any pic shared ||
3943             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3944         check_header dispatch/dispatch.h &&
3945             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3946         if test -n "$sysroot"; then
3947             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3948             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3949         fi
3950         ;;
3951     msys*)
3952         die "Native MSYS builds are discouraged, please use the MINGW environment."
3953         ;;
3954     mingw32*|mingw64*)
3955         target_os=mingw32
3956         LIBTARGET=i386
3957         if enabled x86_64; then
3958             LIBTARGET="i386:x86-64"
3959         fi
3960         if enabled shared; then
3961             # Cannot build both shared and static libs when using dllexport.
3962             disable static
3963         fi
3964         check_ldflags -Wl,--nxcompat
3965         check_ldflags -Wl,--dynamicbase
3966         shlibdir_default="$bindir_default"
3967         SLIBPREF=""
3968         SLIBSUF=".dll"
3969         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3970         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3971         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3972         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3973         SLIB_INSTALL_LINKS=
3974         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3975         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3976         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3977         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3978         enabled x86_64 && objformat="win64" || objformat="win32"
3979         dlltool="${cross_prefix}dlltool"
3980         ranlib=:
3981         enable dos_paths
3982         ;;
3983     win32|win64)
3984         disable symver
3985         if enabled shared; then
3986             # Link to the import library instead of the normal static library
3987             # for shared libs.
3988             LD_LIB='%.lib'
3989             # Cannot build both shared and static libs with MSVC or icl.
3990             disable static
3991         fi
3992         shlibdir_default="$bindir_default"
3993         SLIBPREF=""
3994         SLIBSUF=".dll"
3995         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3996         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3997         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3998         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3999         SLIB_INSTALL_LINKS=
4000         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4001         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4002         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4003         enabled x86_64 && objformat="win64" || objformat="win32"
4004         ranlib=:
4005         enable dos_paths
4006         ;;
4007     cygwin*)
4008         target_os=cygwin
4009         shlibdir_default="$bindir_default"
4010         SLIBPREF="cyg"
4011         SLIBSUF=".dll"
4012         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4013         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4017         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4018         enabled x86_64 && objformat="win64" || objformat="win32"
4019         enable dos_paths
4020         ;;
4021     *-dos|freedos|opendos)
4022         network_extralibs="-lsocket"
4023         objformat="coff"
4024         enable dos_paths
4025         add_cppflags -U__STRICT_ANSI__
4026         ;;
4027     linux)
4028         enable dv1394
4029         enable section_data_rel_ro
4030         ;;
4031     irix*)
4032         target_os=irix
4033         ranlib="echo ignoring ranlib"
4034         ;;
4035     os/2*)
4036         ln_s="cp -f"
4037         objformat="aout"
4038         add_cppflags -D_GNU_SOURCE
4039         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4040         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4041         LIBSUF="_s.a"
4042         SLIBPREF=""
4043         SLIBSUF=".dll"
4044         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4045         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4046         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4047             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4048             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4049             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4050             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4051         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4052             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4053         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4054         enable dos_paths
4055         ;;
4056     gnu/kfreebsd)
4057         add_cppflags -D_BSD_SOURCE
4058         ;;
4059     gnu)
4060         ;;
4061     qnx)
4062         add_cppflags -D_QNX_SOURCE
4063         network_extralibs="-lsocket"
4064         ;;
4065     symbian)
4066         SLIBSUF=".dll"
4067         enable dos_paths
4068         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4069         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4070         add_ldflags -Wl,--target1-abs,--no-undefined \
4071                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4072                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4073         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4074                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4075                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4076         ;;
4077     minix)
4078         ;;
4079     none)
4080         ;;
4081     *)
4082         die "Unknown OS '$target_os'."
4083         ;;
4084 esac
4085
4086 # determine libc flavour
4087
4088 probe_libc(){
4089     pfx=$1
4090     pfx_no_=${pfx%_}
4091     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4092     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4093         eval ${pfx}libc_type=uclibc
4094         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4095     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4096         eval ${pfx}libc_type=glibc
4097         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4098     # MinGW headers can be installed on Cygwin, so check for newlib first.
4099     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4100         eval ${pfx}libc_type=newlib
4101         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4102     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4103     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4104         eval ${pfx}libc_type=mingw64
4105         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4106         eval test \$${pfx_no_}cc_type = "gcc" &&
4107             add_${pfx}cppflags -D__printf__=__gnu_printf__
4108     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4109          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4110         eval ${pfx}libc_type=mingw32
4111         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4112             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4113             die "ERROR: MinGW32 runtime version must be >= 3.15."
4114         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4115         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4116             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4117         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4118             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4119         eval test \$${pfx_no_}cc_type = "gcc" &&
4120             add_${pfx}cppflags -D__printf__=__gnu_printf__
4121     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4122         eval ${pfx}libc_type=msvcrt
4123         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4124             if [ "$pfx" = host_ ]; then
4125                 add_host_cppflags -Dsnprintf=_snprintf
4126             else
4127                 add_compat strtod.o strtod=avpriv_strtod
4128                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4129                                              _snprintf=avpriv_snprintf  \
4130                                              vsnprintf=avpriv_vsnprintf
4131             fi
4132         fi
4133         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4134         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4135         # 0x601 by default unless something else is set by the user.
4136         # This can easily lead to us detecting functions only present
4137         # in such new versions and producing binaries requiring windows 7.0.
4138         # Therefore explicitly set the default to XP unless the user has
4139         # set something else on the command line.
4140         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4141         # family. For these cases, configure is free to use any functions
4142         # found in the SDK headers by default. (Alternatively, we could force
4143         # _WIN32_WINNT to 0x0602 in that case.)
4144         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4145             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4146 #ifdef WINAPI_FAMILY
4147 #include <winapifamily.h>
4148 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4149 #error not desktop
4150 #endif
4151 #endif
4152 EOF
4153         if [ "$pfx" = "" ]; then
4154             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4155         fi
4156     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4157         eval ${pfx}libc_type=klibc
4158     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4159         eval ${pfx}libc_type=bionic
4160     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4161         eval ${pfx}libc_type=solaris
4162         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4163     else
4164         eval ${pfx}libc_type=default
4165         add_${pfx}cppflags -D_DEFAULT_SOURCE
4166     fi
4167 }
4168
4169 probe_libc
4170 test -n "$libc_type" && enable libc_$libc_type
4171 probe_libc host_
4172 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4173
4174 # hacks for compiler/libc/os combinations
4175
4176 case $libc_type in
4177     bionic)
4178         add_compat strtod.o strtod=avpriv_strtod
4179         ;;
4180     glibc)
4181         if enabled tms470; then
4182             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4183             add_cppflags -D__USER_LABEL_PREFIX__=
4184             add_cppflags -D__builtin_memset=memset
4185             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4186             add_cflags   -pds=48    # incompatible redefinition of macro
4187         fi
4188         ;;
4189 esac
4190
4191 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4192     add_cppflags '-I\$(SRC_PATH)/compat/float'
4193
4194 esc(){
4195     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4196 }
4197
4198 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4199
4200 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4201
4202 set_default $PATHS_LIST
4203 set_default nm
4204
4205 # we need to build at least one lib type
4206 if ! enabled_any static shared; then
4207     cat <<EOF
4208 At least one library type must be built.
4209 Specify --enable-static to build the static libraries or --enable-shared to
4210 build the shared libraries as well. To only build the shared libraries specify
4211 --disable-static in addition to --enable-shared.
4212 EOF
4213     exit 1
4214 fi
4215
4216 disabled optimizations || check_cflags -fomit-frame-pointer
4217
4218 enable_weak_pic() {
4219     disabled pic && return
4220     enable pic
4221     add_cppflags -DPIC
4222     case "$target_os" in
4223     mingw*|cygwin*)
4224         ;;
4225     *)
4226         add_cflags -fPIC
4227         ;;
4228     esac
4229     add_asflags  -fPIC
4230 }
4231
4232 enabled pic && enable_weak_pic
4233
4234 check_cc <<EOF || die "Symbol mangling check failed."
4235 int ff_extern;
4236 EOF
4237 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4238 extern_prefix=${sym%%ff_extern*}
4239
4240 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4241
4242 _restrict=
4243 for restrict_keyword in restrict __restrict__ __restrict; do
4244     check_cc <<EOF && _restrict=$restrict_keyword && break
4245 void foo(char * $restrict_keyword p);
4246 EOF
4247 done
4248
4249 check_cc <<EOF && enable pragma_deprecated
4250 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4251 EOF
4252
4253 check_cc <<EOF || die "endian test failed"
4254 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4255 EOF
4256 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4257
4258 check_gas() {
4259     log "check_gas using '$as' as AS"
4260     # :vararg is used on aarch64, arm and ppc altivec
4261     check_as <<EOF || return 1
4262 .macro m n, y:vararg=0
4263 \n: .int \y
4264 .endm
4265 m x
4266 EOF
4267     # .altmacro is only used in arm asm
4268     ! enabled arm || check_as <<EOF || return 1
4269 .altmacro
4270 EOF
4271     enable gnu_as
4272     return 0
4273 }
4274
4275 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4276     nogas=:
4277     enabled_any arm aarch64 && nogas=die
4278     enabled_all ppc altivec && nogas=warn
4279     as_noop=-v
4280
4281     case $as_type in
4282         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4283         gcc)  gaspp_as_type=gas ;;
4284         *)    gaspp_as_type=$as_type ;;
4285     esac
4286
4287     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4288
4289     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4290         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4291
4292     if ! check_gas ; then
4293         as=${gas:=$as}
4294         check_gas || \
4295             $nogas "GNU assembler not found, install/update gas-preprocessor"
4296     fi
4297
4298     check_as <<EOF && enable as_func
4299 .func test
4300 .endfunc
4301 EOF
4302 fi
4303
4304 check_inline_asm inline_asm_labels '"1:\n"'
4305
4306 if enabled aarch64; then
4307     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4308     # internal assembler in clang 3.3 does not support this instruction
4309     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4310     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4311
4312     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4313
4314 elif enabled alpha; then
4315
4316     check_cflags -mieee
4317
4318 elif enabled arm; then
4319
4320     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4321     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4322     enabled thumb && check_cflags -mthumb || check_cflags -marm
4323
4324     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4325         enable vfp_args
4326     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4327         enable vfp_args
4328     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4329         case "${cross_prefix:-$cc}" in
4330             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4331             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4332 __asm__ (".eabi_attribute 28, 1");
4333 int main(void) { return 0; }
4334 EOF
4335         esac
4336         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4337     fi
4338
4339     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4340     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4341     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4342     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4343     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4344     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4345
4346     [ $target_os = linux ] || [ $target_os = android ] ||
4347         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4348             $ARCH_EXT_LIST_ARM
4349
4350     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4351
4352     check_as <<EOF && enable as_arch_directive
4353 .arch armv7-a
4354 EOF
4355     check_as <<EOF && enable as_fpu_directive
4356 .fpu neon
4357 EOF
4358
4359     # llvm's integrated assembler supports .object_arch from llvm 3.5
4360     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4361         check_as <<EOF && enable as_object_arch
4362 .object_arch armv4
4363 EOF
4364
4365     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4366
4367 elif enabled mips; then
4368
4369     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4370
4371     # make sure that only an instruction set is enabled
4372     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4373
4374     if enabled mips64; then
4375         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4376             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4377                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4378     else
4379         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4380             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4381                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4382     fi
4383
4384 elif enabled parisc; then
4385
4386     if enabled gcc; then
4387         case $($cc -dumpversion) in
4388             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4389         esac
4390     fi
4391
4392 elif enabled ppc; then
4393
4394     enable local_aligned_8 local_aligned_16 local_aligned_32
4395
4396     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4397     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4398     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4399     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4400
4401     if enabled altivec; then
4402         check_cflags -maltivec -mabi=altivec
4403
4404         # check if our compiler supports Motorola AltiVec C API
4405         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4406                                  vector signed int v2 = (vector signed int) { 1 };
4407                                  v1 = vec_add(v1, v2);" ||
4408             disable altivec
4409
4410         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4411     fi
4412
4413     if enabled vsx; then
4414         check_cflags -mvsx &&
4415         check_code cc altivec.h "int v[4] = { 0 };
4416                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4417             disable vsx
4418     fi
4419
4420     if enabled power8; then
4421         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4422     fi
4423
4424 elif enabled x86; then
4425
4426     check_builtin rdtsc    intrin.h   "__rdtsc()"
4427     check_builtin mm_empty mmintrin.h "_mm_empty()"
4428
4429     enable local_aligned_8 local_aligned_16 local_aligned_32
4430
4431     # check whether EBP is available on x86
4432     # As 'i' is stored on the stack, this program will crash
4433     # if the base pointer is used to access it because the
4434     # base pointer is cleared in the inline assembly code.
4435     check_exec_crash <<EOF && enable ebp_available
4436 volatile int i=0;
4437 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4438 return i;
4439 EOF
4440
4441     # check whether EBX is available on x86
4442     check_inline_asm ebx_available '""::"b"(0)' &&
4443         check_inline_asm ebx_available '"":::"%ebx"'
4444
4445     # check whether xmm clobbers are supported
4446     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4447
4448     # check whether binutils is new enough to compile SSSE3/MMXEXT
4449     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4450     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4451
4452     probe_x86asm(){
4453         x86asmexe_probe=$1
4454         if check_cmd $x86asmexe_probe -v; then
4455             x86asmexe=$x86asmexe_probe
4456             x86asm_type=nasm
4457             x86asm_debug="-g -F dwarf"
4458             X86ASMDEP=
4459             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4460         elif check_cmd $x86asmexe_probe --version; then
4461             x86asmexe=$x86asmexe_probe
4462             x86asm_type=yasm
4463             x86asm_debug="-g dwarf2"
4464             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4465             X86ASM_DEPFLAGS=
4466         fi
4467         check_x86asm "movbe ecx, [5]" && enable x86asm
4468     }
4469
4470     if ! disabled_any asm mmx x86asm; then
4471         disable x86asm
4472         for program in $x86asmexe nasm yasm; do
4473             probe_x86asm $program && break
4474         done
4475         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4476         X86ASMFLAGS="-f $objformat"
4477         enabled pic               && append X86ASMFLAGS "-DPIC"
4478         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4479         case "$objformat" in
4480             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4481         esac
4482
4483         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4484         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4485         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4486         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4487         check_x86asm "CPU amdnop"                      || disable cpunop
4488     fi
4489
4490     case "$cpu" in
4491         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4492             disable fast_clz
4493         ;;
4494     esac
4495
4496 fi
4497
4498 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4499
4500 check_ldflags -Wl,--as-needed
4501
4502 if ! disabled network; then
4503     check_func getaddrinfo $network_extralibs
4504     check_func inet_aton $network_extralibs
4505
4506     check_type netdb.h "struct addrinfo"
4507     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4508     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4509     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4510     check_type poll.h "struct pollfd"
4511     check_type netinet/sctp.h "struct sctp_event_subscribe"
4512     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4513     check_type netinet/in.h "struct sockaddr_in6"
4514     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4515     check_type "sys/types.h sys/socket.h" socklen_t
4516
4517     # Prefer arpa/inet.h over winsock2
4518     if check_header arpa/inet.h ; then
4519         check_func closesocket
4520     elif check_header winsock2.h ; then
4521         check_func_headers winsock2.h closesocket -lws2 &&
4522             network_extralibs="-lws2" ||
4523         { check_func_headers winsock2.h closesocket -lws2_32 &&
4524             network_extralibs="-lws2_32"; } || disable winsock2_h network
4525         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4526
4527         check_type ws2tcpip.h socklen_t
4528         check_type ws2tcpip.h "struct addrinfo"
4529         check_type ws2tcpip.h "struct group_source_req"
4530         check_type ws2tcpip.h "struct ip_mreq_source"
4531         check_type ws2tcpip.h "struct ipv6_mreq"
4532         check_type winsock2.h "struct pollfd"
4533         check_struct winsock2.h "struct sockaddr" sa_len
4534         check_type ws2tcpip.h "struct sockaddr_in6"
4535         check_type ws2tcpip.h "struct sockaddr_storage"
4536     else
4537         disable network
4538     fi
4539 fi
4540
4541 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4542 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4543 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4544 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4545
4546 case "$custom_allocator" in
4547     jemalloc)
4548         # jemalloc by default does not use a prefix
4549         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4550     ;;
4551     tcmalloc)
4552         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4553         malloc_prefix=tc_
4554     ;;
4555 esac
4556
4557 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4558 check_func  ${malloc_prefix}memalign            && enable memalign
4559 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4560
4561 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4562     { check_lib clock_gettime time.h clock_gettime ||
4563       check_lib clock_gettime time.h clock_gettime -lrt; }
4564
4565 check_func  fcntl
4566 check_func  gethrtime
4567 check_func  getopt
4568 check_func  getrusage
4569 check_func  gettimeofday
4570 check_func  gmtime_r
4571 check_func  isatty
4572 check_func  localtime_r
4573 check_func  mach_absolute_time
4574 check_func  mkstemp
4575 check_func  mmap
4576 check_func  mprotect
4577 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4578 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4579 check_func  sched_getaffinity
4580 check_func  setrlimit
4581 check_func  strerror_r
4582 check_func  sysconf
4583 check_func  sysctl
4584 check_func  usleep
4585
4586 check_func_headers io.h setmode
4587 check_func_headers stdlib.h getenv
4588
4589 check_func_headers windows.h GetProcessAffinityMask
4590 check_func_headers windows.h GetProcessTimes
4591 check_func_headers windows.h GetSystemTimeAsFileTime
4592 check_func_headers windows.h LoadLibrary
4593 check_func_headers windows.h MapViewOfFile
4594 check_func_headers windows.h SetConsoleTextAttribute
4595 check_func_headers windows.h Sleep
4596 check_func_headers windows.h VirtualAlloc
4597 check_struct windows.h "CONDITION_VARIABLE" Ptr
4598
4599 check_header direct.h
4600 check_header dxgidebug.h
4601 check_header dxva.h
4602 check_header dxva2api.h
4603 check_header io.h
4604 check_header mach/mach_time.h
4605 check_header malloc.h
4606 check_header poll.h
4607 check_header sys/param.h
4608 check_header sys/resource.h
4609 check_header sys/select.h
4610 check_header sys/time.h
4611 check_header sys/un.h
4612 check_header unistd.h
4613 check_header valgrind/valgrind.h
4614 check_header VideoDecodeAcceleration/VDADecoder.h
4615 check_header windows.h
4616
4617 # it seems there are versions of clang in some distros that try to use the
4618 # gcc headers, which explodes for stdatomic
4619 # so we also check that atomics actually work here
4620 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4621
4622 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4623 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4624 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4625 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4626
4627 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4628
4629 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4630 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4631 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4632
4633 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4634 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4635 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4636
4637 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4638 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4639 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4640 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4641 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4642 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4643 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4644 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4645 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4646
4647 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4648
4649 if ! disabled w32threads && ! enabled pthreads; then
4650     check_lib w32threads "windows.h process.h" _beginthreadex
4651 fi
4652
4653 # check for some common methods of building with pthread support
4654 # do this before the optional library checks as some of them require pthreads
4655 if ! disabled pthreads && ! enabled w32threads; then
4656     if check_lib pthreads pthread.h pthread_join -pthread; then
4657         add_cflags -pthread
4658     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4659         add_cflags -pthreads
4660     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4661         :
4662     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4663         :
4664     elif check_func pthread_join; then
4665         enable pthreads
4666     fi
4667 fi
4668
4669 enabled pthreads &&
4670     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4671
4672 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4673 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4674
4675 # On some systems dynamic loading requires no extra linker flags
4676 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4677
4678 check_lib libm math.h sin -lm
4679
4680 atan2f_args=2
4681 ldexpf_args=2
4682 powf_args=2
4683
4684 for func in $MATH_FUNCS; do
4685     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4686 done
4687
4688 # these are off by default, so fail if requested and not available
4689 enabled avisynth          && require_header avisynth/avisynth_c.h
4690 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4691 enabled cuda              && require cuda cuda.h cuInit -lcuda
4692 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4693 enabled frei0r            && require_header frei0r.h
4694 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4695 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4696 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4697 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4698 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4699 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4700 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4701 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4702 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4703 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4704 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4705 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4706 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4707 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4708 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4709 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4710 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4711 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4712 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4713 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4714                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4715 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4716 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4717 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4718 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4719 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4720 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4721 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4722 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4723 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4724 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4725 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4726 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4727                              { enabled libvpx_vp8_decoder &&
4728                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4729                                enabled libvpx_vp8_encoder &&
4730                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4731                                enabled libvpx_vp9_decoder &&
4732                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4733                                enabled libvpx_vp9_encoder &&
4734                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4735                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4736                                    die "libvpx enabled but no supported decoders/encoders found"
4737                              }
4738 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4739 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4740 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4741                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4742                              { check_cpp_condition x264.h "X264_MPEG2" &&
4743                                enable libx262; }
4744 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4745                              require_cpp_condition x265.h "X265_BUILD >= 57"
4746 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4747 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4748 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4749                                { ! enabled cross_compile &&
4750                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4751                                  add_ldflags -L/opt/vc/lib/ &&
4752                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4753                                die "ERROR: mmal not found" &&
4754                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4755 enabled omx               && require_header OMX_Core.h
4756 enabled omx_rpi           && { check_header OMX_Core.h ||
4757                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4758                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4759 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4760                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4761                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4762                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4763                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4764                                die "ERROR: openssl not found"; }
4765
4766 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4767
4768 if enabled nvenc; then
4769     require_header nvEncodeAPI.h
4770     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4771 fi
4772
4773 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4774 enabled avplay &&
4775     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4776
4777 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4778 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4779
4780 check_header linux/fb.h
4781 check_header linux/videodev2.h
4782 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4783
4784 check_header AVFoundation/AVFoundation.h
4785
4786 check_header sys/videoio.h
4787
4788 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4789 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4790 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4791 # w32api 3.12 had it defined wrong
4792 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4793
4794 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4795 { check_header dev/bktr/ioctl_meteor.h &&
4796   check_header dev/bktr/ioctl_bt848.h; } ||
4797 { check_header machine/ioctl_meteor.h &&
4798   check_header machine/ioctl_bt848.h; } ||
4799 { check_header dev/video/meteor/ioctl_meteor.h &&
4800   check_header dev/video/bktr/ioctl_bt848.h; } ||
4801 check_header dev/ic/bt8xx.h
4802
4803 check_header sys/soundcard.h
4804
4805 enabled_any alsa_indev alsa_outdev &&
4806     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4807
4808 enabled libjack &&
4809     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4810
4811 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4812
4813 if enabled libcdio; then
4814     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4815     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4816     die "ERROR: No usable libcdio/cdparanoia found"
4817 fi
4818
4819 if enabled libxcb; then
4820     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4821     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4822     disabled libxcb_shm ||
4823         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4824     disabled libxcb_xfixes ||
4825         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4826 fi
4827
4828 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4829 # the desktop api partition
4830 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4831 #ifdef WINAPI_FAMILY
4832 #include <winapifamily.h>
4833 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4834 #error desktop, not uwp
4835 #else
4836 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4837 #endif
4838 #else
4839 #error no family set
4840 #endif
4841 EOF
4842
4843 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4844
4845 enabled vaapi &&