20a839c1d905a709f52291a1d52cd4005f1dc232
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libhdcd           HDCD decoding filter
201   --enable-libilbc           ILBC audio encoding/decoding
202   --enable-libjack           JACK audio sound server
203   --enable-libkvazaar        HEVC video encoding
204   --enable-libmp3lame        MP3 audio encoding
205   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
206   --enable-libopencore-amrwb AMR-WB audio decoding
207   --enable-libopencv         computer vision
208   --enable-libopenh264       H.264 video encoding/decoding
209   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
210   --enable-libopus           Opus audio encoding/decoding
211   --enable-libpulse          Pulseaudio sound server
212   --enable-librtmp           RTMP streaming
213   --enable-libschroedinger   Dirac video encoding/decoding
214   --enable-libsnappy         snappy compression
215   --enable-libspeex          Speex audio encoding/decoding
216   --enable-libsrt            Haivision SRT protocol
217   --enable-libtheora         Theora video encoding/decoding
218   --enable-libtwolame        MP2 audio encoding
219   --enable-libvo-aacenc      AAC audio encoding
220   --enable-libvo-amrwbenc    AMR-WB audio encoding
221   --enable-libvorbis         Vorbis audio encoding/decoding
222   --enable-libvpx            VP* video encoding/decoding
223   --enable-libwavpack        Wavpack audio encoding/decoding
224   --enable-libwebp           WebP image encoding/decoding
225   --enable-libx264           H.264 video encoding
226   --enable-libx265           HEVC video encoding
227   --enable-libxavs           Chinese AVS video encoding
228   --enable-libxcb            X window system protocol communication
229   --enable-libxcb-shm        X11 shm communication [auto]
230   --enable-libxcb-xfixes     X11 mouse rendering [auto]
231   --enable-libxvid           MPEG-4 ASP video encoding
232   --enable-openssl           crypto
233   --enable-zlib              compression [autodetect]
234
235   The following libraries provide various hardware acceleration features:
236   --enable-amf     AMF video encoding code [auto]
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-cuvid   Nvidia CUVID video decode acceleration
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
265                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
266                            valgrind-massif, valgrind-memcheck,
267                            msvc, icl, gcov, llvm-cov, hardened)
268   --nm=NM                  use nm tool
269   --ar=AR                  use archive tool AR [$ar_default]
270   --as=AS                  use assembler AS [$as_default]
271   --cc=CC                  use C compiler CC [$cc_default]
272   --objcc=OCC              use ObjC compiler OCC [$cc_default]
273   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
274   --ld=LD                  use linker LD
275   --x86asmexe=X86ASM       use x86 assembler X86ASM
276   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
277   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
278   --host-cc=HOSTCC         use host C compiler HOSTCC
279   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
280   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
281   --host-ld=HOSTLD         use host linker HOSTLD
282   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
283   --host-libs=HLIBS        use libs HLIBS when linking for host
284   --host-os=OS             compiler host OS [$target_os]
285   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
286   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
287   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
288   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
289   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
290   --extra-libs=ELIBS       add ELIBS [$ELIBS]
291   --extra-version=STRING   version string suffix []
292   --optflags=OPTFLAGS      override optimization-related compiler flags
293   --enable-pic             build position-independent code
294   --enable-thumb           compile for Thumb instruction set
295   --enable-lto             use link-time optimization
296   --env="ENV=override"     override the environment variables
297
298 Advanced options (experts only):
299   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
300   --custom-allocator=NAME  use a supported custom allocator
301   --disable-symver         disable symbol versioning
302   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
303   --disable-safe-bitstream-reader
304                            disable buffer boundary checking in bitreaders
305                            (faster, but may crash)
306   --enable-sram            allow use of on-chip SRAM
307
308 Optimization options (experts only):
309   --disable-asm            disable all assembly optimizations
310   --disable-altivec        disable AltiVec optimizations
311   --disable-vsx            disable VSX optimizations
312   --disable-power8         disable POWER8 optimizations
313   --disable-amd3dnow       disable 3DNow! optimizations
314   --disable-amd3dnowext    disable 3DNow! extended optimizations
315   --disable-mmx            disable MMX optimizations
316   --disable-mmxext         disable MMXEXT optimizations
317   --disable-sse            disable SSE optimizations
318   --disable-sse2           disable SSE2 optimizations
319   --disable-sse3           disable SSE3 optimizations
320   --disable-ssse3          disable SSSE3 optimizations
321   --disable-sse4           disable SSE4 optimizations
322   --disable-sse42          disable SSE4.2 optimizations
323   --disable-avx            disable AVX optimizations
324   --disable-xop            disable XOP optimizations
325   --disable-fma3           disable FMA3 optimizations
326   --disable-fma4           disable FMA4 optimizations
327   --disable-avx2           disable AVX2 optimizations
328   --disable-armv5te        disable armv5te optimizations
329   --disable-armv6          disable armv6 optimizations
330   --disable-armv6t2        disable armv6t2 optimizations
331   --disable-vfp            disable VFP optimizations
332   --disable-neon           disable NEON optimizations
333   --disable-inline-asm     disable use of inline assembly
334   --disable-x86asm         disable use of standalone x86 assembly
335
336 Developer options (useful when working on Libav itself):
337   --disable-debug          disable debugging symbols
338   --enable-debug=LEVEL     set the debug level [$debuglevel]
339   --disable-optimizations  disable compiler optimizations
340   --enable-extra-warnings  enable more compiler warnings
341   --samples=PATH           location of test samples for FATE, if not set use
342                            \$LIBAV_SAMPLES at make invocation time.
343   --enable-neon-clobber-test check NEON registers for clobbering (should be
344                            used only for debugging purposes)
345   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
346                            should be used only for debugging purposes)
347   --disable-valgrind-backtrace do not print a backtrace under Valgrind
348                            (only applies to --disable-optimizations builds)
349   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
350                            in the name) of tests whose result is ignored
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 log(){
358     echo "$@" >> $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 $(sanitize_var_name $var)
522     done
523 }
524
525 disable_sanitized(){
526     for var; do
527         disable $(sanitize_var_name $var)
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_objcflags(){
722     append OBJCFLAGS $($objcflags_filter "$@")
723 }
724
725 add_asflags(){
726     append ASFLAGS $($asflags_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_extralibs(){
742     prepend extralibs $($ldflags_filter "$@")
743 }
744
745 add_stripflags(){
746     append STRIPFLAGS "$@"
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' "$@"
765 }
766
767 test_cmd(){
768     log "$@"
769     "$@" >> $logfile 2>&1
770 }
771
772 cc_e(){
773     eval printf '%s\\n' $CC_E
774 }
775
776 cc_o(){
777     eval printf '%s\\n' $CC_O
778 }
779
780 as_o(){
781     eval printf '%s\\n' $AS_O
782 }
783
784 x86asm_o(){
785     eval printf '%s\\n' $X86ASM_O
786 }
787
788 ld_o(){
789     eval printf '%s\\n' $LD_O
790 }
791
792 hostcc_e(){
793     eval printf '%s\\n' $HOSTCC_E
794 }
795
796 hostcc_o(){
797     eval printf '%s\\n' $HOSTCC_O
798 }
799
800 test_cc(){
801     log test_cc "$@"
802     cat > $TMPC
803     log_file $TMPC
804     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
805 }
806
807 test_objcc(){
808     log test_objcc "$@"
809     cat > $TMPC
810     log_file $TMPC
811     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
812 }
813
814 test_cpp(){
815     log test_cpp "$@"
816     cat > $TMPC
817     log_file $TMPC
818     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
819 }
820
821 test_as(){
822     log test_as "$@"
823     cat > $TMPS
824     log_file $TMPS
825     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
826 }
827
828 test_x86asm(){
829     log test_x86asm "$@"
830     echo "$1" > $TMPASM
831     log_file $TMPASM
832     shift
833     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
834 }
835
836 check_cmd(){
837     log check_cmd "$@"
838     cmd=$1
839     disabled $cmd && return
840     disable $cmd
841     test_cmd $@ && enable $cmd
842 }
843
844 check_as(){
845     log check_as "$@"
846     name=$1
847     code=$2
848     shift 2
849     disable $name
850     test_as $@ <<EOF && enable $name
851 $code
852 EOF
853 }
854
855 check_inline_asm(){
856     log check_inline_asm "$@"
857     name="$1"
858     code="$2"
859     shift 2
860     disable $name
861     test_cc "$@" <<EOF && enable $name
862 void foo(void){ __asm__ volatile($code); }
863 EOF
864 }
865
866 check_insn(){
867     log check_insn "$@"
868     check_inline_asm ${1}_inline "$2"
869     check_as ${1}_external "$2"
870 }
871
872 check_x86asm(){
873     log check_x86asm "$@"
874     name=$1
875     shift
876     disable $name
877     test_x86asm "$@" && enable $name
878 }
879
880 test_ld(){
881     log test_ld "$@"
882     flags=$(filter_out '-l*' "$@")
883     libs=$(filter '-l*' "$@")
884     test_cc $($cflags_filter $flags) || return
885     flags=$($ldflags_filter $flags)
886     libs=$($ldflags_filter $libs)
887     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
888 }
889
890 check_ld(){
891     log check_ld "$@"
892     name=$1
893     shift
894     disable $name
895     test_ld $@ && enable $name
896 }
897
898 print_include(){
899     hdr=$1
900     test "${hdr%.h}" = "${hdr}" &&
901         echo "#include $hdr"    ||
902         echo "#include <$hdr>"
903 }
904
905 test_code(){
906     log test_code "$@"
907     check=$1
908     headers=$2
909     code=$3
910     shift 3
911     {
912         for hdr in $headers; do
913             print_include $hdr
914         done
915         echo "int main(void) { $code; return 0; }"
916     } | test_$check "$@"
917 }
918
919 check_cppflags(){
920     log check_cppflags "$@"
921     test_cpp "$@" <<EOF && add_cppflags "$@"
922 #include <stdlib.h>;
923 EOF
924 }
925
926 test_cflags(){
927     log test_cflags "$@"
928     set -- $($cflags_filter "$@")
929     test_cc "$@" <<EOF
930 int x;
931 EOF
932 }
933
934 check_cflags(){
935     log check_cflags "$@"
936     test_cflags "$@" && add_cflags "$@"
937 }
938
939 test_objcflags(){
940     log test_objcflags "$@"
941     set -- $($objcflags_filter "$@")
942     test_objcc "$@" <<EOF
943 int x;
944 EOF
945 }
946
947 check_objcflags(){
948     log check_objcflags "$@"
949     test_objcflags "$@" && add_objcflags "$@"
950 }
951
952 test_ldflags(){
953     log test_ldflags "$@"
954     set -- $($ldflags_filter "$@")
955     test_ld "$@" <<EOF
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_ldflags(){
961     log check_ldflags "$@"
962     test_ldflags "$@" && add_ldflags "$@"
963 }
964
965 test_stripflags(){
966     log test_stripflags "$@"
967     # call test_cc to get a fresh TMPO
968     test_cc <<EOF
969 int main(void) { return 0; }
970 EOF
971     test_cmd $strip $STRIPFLAGS "$@" $TMPO
972 }
973
974 check_stripflags(){
975     log check_stripflags "$@"
976     test_stripflags "$@" && add_stripflags "$@"
977 }
978
979 check_headers(){
980     log check_headers "$@"
981     headers=$1
982     shift
983     disable_sanitized $headers
984     {
985         for hdr in $headers; do
986             print_include $hdr
987         done
988         echo "int x;"
989     } | test_cpp "$@" && enable_sanitized $headers
990 }
991
992 check_func(){
993     log check_func "$@"
994     func=$1
995     shift
996     disable $func
997     test_ld "$@" <<EOF && enable $func
998 extern int $func();
999 int main(void){ $func(); }
1000 EOF
1001 }
1002
1003 check_mathfunc(){
1004     log check_mathfunc "$@"
1005     func=$1
1006     narg=$2
1007     shift 2
1008     test $narg = 2 && args="f, g" || args="f"
1009     disable $func
1010     test_ld "$@" <<EOF && enable $func
1011 #include <math.h>
1012 float foo(float f, float g) { return $func($args); }
1013 int main(void){ return 0; }
1014 EOF
1015 }
1016
1017 check_func_headers(){
1018     log check_func_headers "$@"
1019     headers=$1
1020     funcs=$2
1021     shift 2
1022     {
1023         for hdr in $headers; do
1024             print_include $hdr
1025         done
1026         for func in $funcs; do
1027             echo "long check_$func(void) { return (long) $func; }"
1028         done
1029         echo "int main(void) { return 0; }"
1030     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1031 }
1032
1033 test_cpp_condition(){
1034     log test_cpp_condition "$@"
1035     header=$1
1036     condition=$2
1037     shift 2
1038     test_cpp "$@" <<EOF
1039 #include <$header>
1040 #if !($condition)
1041 #error "unsatisfied condition: $condition"
1042 #endif
1043 EOF
1044 }
1045
1046 check_cpp_condition(){
1047     log check_cpp_condition "$@"
1048     name=$1
1049     shift 1
1050     disable $name
1051     test_cpp_condition "$@" && enable $name
1052 }
1053
1054 check_lib(){
1055     log check_lib "$@"
1056     name="$1"
1057     headers="$2"
1058     funcs="$3"
1059     shift 3
1060     disable $name
1061     check_func_headers "$headers" "$funcs" "$@" &&
1062         enable $name && eval ${name}_extralibs="\$@"
1063 }
1064
1065 test_pkg_config(){
1066     log test_pkg_config "$@"
1067     name="$1"
1068     pkg_version="$2"
1069     pkg="${2%% *}"
1070     headers="$3"
1071     funcs="$4"
1072     shift 4
1073     disable $name
1074     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1075     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1076     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1077     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1078         enable $name &&
1079         set_sanitized "${name}_cflags"    $pkg_cflags &&
1080         set_sanitized "${name}_extralibs" $pkg_libs
1081 }
1082
1083 check_pkg_config(){
1084     log check_pkg_config "$@"
1085     name="$1"
1086     test_pkg_config "$@" &&
1087         eval add_cflags \$${name}_cflags
1088 }
1089
1090 test_exec(){
1091     log test_exec "$@"
1092     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1093 }
1094
1095 check_exec_crash(){
1096     log check_exec_crash "$@"
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (test_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_sanitized "$type"
1132     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_sanitized "${struct}_${member}"
1142     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_sanitized "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     shift
1150     disable "$name"
1151     test_code ld "$@" && enable "$name"
1152 }
1153
1154 check_compile_assert(){
1155     log check_compile_assert "$@"
1156     name=$1
1157     headers=$2
1158     condition=$3
1159     shift 3
1160     disable "$name"
1161     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1162 }
1163
1164 check_cc(){
1165     log check_cc "$@"
1166     name=$1
1167     shift
1168     disable "$name"
1169     test_code cc "$@" && enable "$name"
1170 }
1171
1172 require(){
1173     log require "$@"
1174     name_version="$1"
1175     name="${1%% *}"
1176     shift
1177     check_lib $name "$@" || die "ERROR: $name_version not found"
1178 }
1179
1180 require_cc(){
1181     log require_cc "$@"
1182     name="$1"
1183     check_cc "$@" || die "ERROR: $name failed"
1184 }
1185
1186 require_header(){
1187     log require_header "$@"
1188     headers="$1"
1189     check_headers "$@" || die "ERROR: $headers not found"
1190 }
1191
1192 require_cpp_condition(){
1193     log require_cpp_condition "$@"
1194     condition="$2"
1195     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1196 }
1197
1198 require_pkg_config(){
1199     log require_pkg_config "$@"
1200     pkg_version="$2"
1201     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1202 }
1203
1204 test_host_cc(){
1205     log test_host_cc "$@"
1206     cat > $TMPC
1207     log_file $TMPC
1208     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1209 }
1210
1211 test_host_cpp(){
1212     log test_host_cpp "$@"
1213     cat > $TMPC
1214     log_file $TMPC
1215     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1216 }
1217
1218 check_host_cppflags(){
1219     log check_host_cppflags "$@"
1220     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1221 #include <stdlib.h>;
1222 EOF
1223 }
1224
1225 check_host_cflags(){
1226     log check_host_cflags "$@"
1227     set -- $($host_cflags_filter "$@")
1228     test_host_cc "$@" <<EOF && append host_cflags "$@"
1229 int x;
1230 EOF
1231 }
1232
1233 test_host_cpp_condition(){
1234     log test_host_cpp_condition "$@"
1235     header=$1
1236     condition=$2
1237     shift 2
1238     test_host_cpp "$@" <<EOF
1239 #include <$header>
1240 #if !($condition)
1241 #error "unsatisfied condition: $condition"
1242 #endif
1243 EOF
1244 }
1245
1246 check_host_cpp_condition(){
1247     log check_host_cpp_condition "$@"
1248     name=$1
1249     shift 1
1250     disable $name
1251     test_host_cpp_condition "$@" && enable $name
1252 }
1253
1254 cp_if_changed(){
1255     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1256     mkdir -p "$(dirname $2)"
1257     cp -f "$1" "$2"
1258 }
1259
1260 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1261 # system-dependent things.
1262
1263 AVCODEC_COMPONENTS="
1264     bsfs
1265     decoders
1266     encoders
1267     hwaccels
1268     parsers
1269 "
1270
1271 AVDEVICE_COMPONENTS="
1272     indevs
1273 "
1274 AVFILTER_COMPONENTS="
1275     filters
1276 "
1277 AVFORMAT_COMPONENTS="
1278     demuxers
1279     muxers
1280     protocols
1281 "
1282
1283 COMPONENT_LIST="
1284     $AVCODEC_COMPONENTS
1285     $AVDEVICE_COMPONENTS
1286     $AVFILTER_COMPONENTS
1287     $AVFORMAT_COMPONENTS
1288 "
1289
1290 EXAMPLE_LIST="
1291     decode_audio_example
1292     decode_video_example
1293     encode_audio_example
1294     encode_video_example
1295     filter_audio_example
1296     metadata_example
1297     output_example
1298     qsvdec_example
1299     transcode_aac_example
1300 "
1301
1302 # catchall list of things that require external libs to link
1303 EXTRALIBS_LIST="
1304     cpu_init
1305     cws2fws
1306 "
1307
1308 HWACCEL_LIBRARY_NONFREE_LIST="
1309     cuda
1310     cuvid
1311     libnpp
1312 "
1313 HWACCEL_LIBRARY_LIST="
1314     $HWACCEL_LIBRARY_NONFREE_LIST
1315     amf
1316     d3d11va
1317     dxva2
1318     libmfx
1319     mmal
1320     nvenc
1321     omx
1322     vaapi
1323     vda
1324     vdpau
1325 "
1326
1327 EXTERNAL_LIBRARY_GPL_LIST="
1328     libcdio
1329     libx264
1330     libx265
1331     libxavs
1332     libxvid
1333 "
1334
1335 EXTERNAL_LIBRARY_NONFREE_LIST="
1336     libfaac
1337     libfdk_aac
1338     openssl
1339 "
1340
1341 EXTERNAL_LIBRARY_VERSION3_LIST="
1342     libopencore_amrnb
1343     libopencore_amrwb
1344     libvo_aacenc
1345     libvo_amrwbenc
1346 "
1347
1348 EXTERNAL_LIBRARY_LIST="
1349     $EXTERNAL_LIBRARY_GPL_LIST
1350     $EXTERNAL_LIBRARY_NONFREE_LIST
1351     $EXTERNAL_LIBRARY_VERSION3_LIST
1352     avisynth
1353     avxsynth
1354     frei0r
1355     gnutls
1356     libaom
1357     libbs2b
1358     libdc1394
1359     libdcadec
1360     libfontconfig
1361     libfreetype
1362     libgsm
1363     libhdcd
1364     libilbc
1365     libjack
1366     libkvazaar
1367     libmp3lame
1368     libopencv
1369     libopenh264
1370     libopenjpeg
1371     libopus
1372     libpulse
1373     librtmp
1374     libschroedinger
1375     libsnappy
1376     libspeex
1377     libsrt
1378     libtheora
1379     libtwolame
1380     libvorbis
1381     libvpx
1382     libwavpack
1383     libwebp
1384     libxcb
1385     libxcb_shm
1386     libxcb_xfixes
1387 "
1388
1389 SYSTEM_LIBRARY_LIST="
1390     bzlib
1391     zlib
1392 "
1393
1394 FEATURE_LIST="
1395     gray
1396     hardcoded_tables
1397     omx_rpi
1398     runtime_cpudetect
1399     safe_bitstream_reader
1400     shared
1401     small
1402     sram
1403     static
1404     swscale_alpha
1405 "
1406
1407 LIBRARY_LIST="
1408     avcodec
1409     avdevice
1410     avfilter
1411     avformat
1412     avresample
1413     avutil
1414     swscale
1415 "
1416
1417 LICENSE_LIST="
1418     gpl
1419     nonfree
1420     version3
1421 "
1422
1423 PROGRAM_LIST="
1424     avconv
1425     avplay
1426     avprobe
1427 "
1428
1429 SUBSYSTEM_LIST="
1430     dct
1431     doc
1432     error_resilience
1433     faan
1434     fft
1435     lsp
1436     lzo
1437     mdct
1438     network
1439     rdft
1440 "
1441
1442 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1443 CONFIG_LIST="
1444     $EXAMPLE_LIST
1445     $EXTERNAL_LIBRARY_LIST
1446     $HWACCEL_LIBRARY_LIST
1447     $FEATURE_LIST
1448     $LICENSE_LIST
1449     $LIBRARY_LIST
1450     $PROGRAM_LIST
1451     $SUBSYSTEM_LIST
1452     $SYSTEM_LIBRARY_LIST
1453     neon_clobber_test
1454     pic
1455     pod2man
1456     texi2html
1457     thumb
1458     valgrind_backtrace
1459     xmm_clobber_test
1460     $COMPONENT_LIST
1461 "
1462
1463 THREADS_LIST="
1464     pthreads
1465     w32threads
1466 "
1467
1468 ATOMICS_LIST="
1469     atomics_gcc
1470     atomics_suncc
1471     atomics_win32
1472 "
1473
1474 ARCH_LIST="
1475     aarch64
1476     alpha
1477     arm
1478     avr32
1479     avr32_ap
1480     avr32_uc
1481     bfin
1482     ia64
1483     m68k
1484     mips
1485     mips64
1486     parisc
1487     ppc
1488     ppc64
1489     s390
1490     sh4
1491     sparc
1492     sparc64
1493     tilegx
1494     tilepro
1495     tomi
1496     x86
1497     x86_32
1498     x86_64
1499 "
1500
1501 ARCH_EXT_LIST_ARM="
1502     armv5te
1503     armv6
1504     armv6t2
1505     armv8
1506     neon
1507     vfp
1508     vfpv3
1509 "
1510
1511 ARCH_EXT_LIST_X86_SIMD="
1512     amd3dnow
1513     amd3dnowext
1514     avx
1515     avx2
1516     fma3
1517     fma4
1518     mmx
1519     mmxext
1520     sse
1521     sse2
1522     sse3
1523     sse4
1524     sse42
1525     ssse3
1526     xop
1527 "
1528
1529 ARCH_EXT_LIST_PPC="
1530     altivec
1531     dcbzl
1532     ldbrx
1533     power8
1534     ppc4xx
1535     vsx
1536 "
1537
1538 ARCH_EXT_LIST_X86="
1539     $ARCH_EXT_LIST_X86_SIMD
1540     cpunop
1541     i686
1542 "
1543
1544 ARCH_EXT_LIST_MIPS="
1545     loongson
1546     mips32r1
1547     mips64r1
1548     mips32r2
1549     mips64r2
1550     mips32r6
1551     mips64r6
1552 "
1553
1554 ARCH_EXT_LIST="
1555     $ARCH_EXT_LIST_ARM
1556     $ARCH_EXT_LIST_MIPS
1557     $ARCH_EXT_LIST_PPC
1558     $ARCH_EXT_LIST_X86
1559     vis
1560 "
1561
1562 ARCH_FEATURES="
1563     aligned_stack
1564     fast_64bit
1565     fast_clz
1566     fast_cmov
1567     local_aligned_8
1568     local_aligned_16
1569     local_aligned_32
1570     simd_align_16
1571     simd_align_32
1572 "
1573
1574 BUILTIN_LIST="
1575     atomic_cas_ptr
1576     machine_rw_barrier
1577     MemoryBarrier
1578     mm_empty
1579     rdtsc
1580     sem_timedwait
1581     sync_val_compare_and_swap
1582 "
1583 HAVE_LIST_CMDLINE="
1584     inline_asm
1585     symver
1586     x86asm
1587 "
1588
1589 HAVE_LIST_PUB="
1590     bigendian
1591     fast_unaligned
1592 "
1593
1594 HEADERS_LIST="
1595     AVFoundation_AVFoundation_h
1596     arpa_inet_h
1597     cdio_paranoia_h
1598     cdio_paranoia_paranoia_h
1599     dispatch_dispatch_h
1600     dev_bktr_ioctl_bt848_h
1601     dev_bktr_ioctl_meteor_h
1602     dev_ic_bt8xx_h
1603     dev_video_bktr_ioctl_bt848_h
1604     dev_video_meteor_ioctl_meteor_h
1605     direct_h
1606     dxgidebug_h
1607     dxva_h
1608     io_h
1609     machine_ioctl_bt848_h
1610     machine_ioctl_meteor_h
1611     malloc_h
1612     poll_h
1613     sys_param_h
1614     sys_resource_h
1615     sys_select_h
1616     sys_soundcard_h
1617     sys_time_h
1618     sys_un_h
1619     sys_videoio_h
1620     unistd_h
1621     valgrind_valgrind_h
1622     windows_h
1623     winsock2_h
1624 "
1625
1626 INTRINSICS_LIST="
1627     intrinsics_neon
1628 "
1629
1630 MATH_FUNCS="
1631     atanf
1632     atan2f
1633     cbrtf
1634     cosf
1635     exp2
1636     exp2f
1637     expf
1638     isinf
1639     isnan
1640     ldexpf
1641     llrint
1642     llrintf
1643     log2
1644     log2f
1645     log10f
1646     lrint
1647     lrintf
1648     powf
1649     rint
1650     round
1651     roundf
1652     sinf
1653     trunc
1654     truncf
1655 "
1656
1657 SYSTEM_FEATURES="
1658     dos_paths
1659     libc_msvcrt
1660     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1661     section_data_rel_ro
1662     threads
1663     uwp
1664 "
1665
1666 SYSTEM_FUNCS="
1667     aligned_malloc
1668     clock_gettime
1669     closesocket
1670     CommandLineToArgvW
1671     fcntl
1672     getaddrinfo
1673     gethrtime
1674     getopt
1675     GetProcessAffinityMask
1676     GetProcessMemoryInfo
1677     GetProcessTimes
1678     getrusage
1679     GetSystemTimeAsFileTime
1680     gettimeofday
1681     gmtime_r
1682     inet_aton
1683     isatty
1684     localtime_r
1685     mach_absolute_time
1686     MapViewOfFile
1687     memalign
1688     mmap
1689     mprotect
1690     nanosleep
1691     posix_memalign
1692     sched_getaffinity
1693     SetConsoleTextAttribute
1694     setmode
1695     setrlimit
1696     Sleep
1697     strerror_r
1698     sysconf
1699     sysctl
1700     usleep
1701     VirtualAlloc
1702 "
1703
1704 SYSTEM_LIBRARIES="
1705     bcrypt
1706     sdl
1707     vaapi_1
1708     vaapi_drm
1709     vaapi_x11
1710     vdpau_x11
1711 "
1712
1713 TOOLCHAIN_FEATURES="
1714     as_arch_directive
1715     as_fpu_directive
1716     as_func
1717     as_object_arch
1718     asm_mod_q
1719     blocks_extension
1720     ebp_available
1721     ebx_available
1722     gnu_as
1723     ibm_asm
1724     inline_asm_labels
1725     pragma_deprecated
1726     symver_asm_label
1727     symver_gnu_asm
1728     vfp_args
1729     xform_asm
1730     xmm_clobbers
1731 "
1732
1733 TYPES_LIST="
1734     CUVIDDECODECREATEINFO_bitDepthMinus8
1735     socklen_t
1736     struct_addrinfo
1737     struct_group_source_req
1738     struct_ip_mreq_source
1739     struct_ipv6_mreq
1740     struct_pollfd
1741     struct_rusage_ru_maxrss
1742     struct_sockaddr_in6
1743     struct_sockaddr_sa_len
1744     struct_sockaddr_storage
1745     struct_v4l2_frmivalenum_discrete
1746 "
1747
1748 HAVE_LIST="
1749     $ARCH_EXT_LIST
1750     $(add_suffix _external $ARCH_EXT_LIST)
1751     $(add_suffix _inline   $ARCH_EXT_LIST)
1752     $ARCH_FEATURES
1753     $BUILTIN_LIST
1754     $HAVE_LIST_CMDLINE
1755     $HAVE_LIST_PUB
1756     $HEADERS_LIST
1757     $INTRINSICS_LIST
1758     $MATH_FUNCS
1759     $SYSTEM_FEATURES
1760     $SYSTEM_FUNCS
1761     $SYSTEM_LIBRARIES
1762     $THREADS_LIST
1763     $TOOLCHAIN_FEATURES
1764     $TYPES_LIST
1765 "
1766
1767 # options emitted with CONFIG_ prefix but not available on the command line
1768 CONFIG_EXTRA="
1769     aandcttables
1770     ac3dsp
1771     adts_header
1772     audio_frame_queue
1773     audiodsp
1774     blockdsp
1775     bswapdsp
1776     cabac
1777     cbs
1778     cbs_h264
1779     cbs_h265
1780     cbs_mpeg2
1781     dirac_parse
1782     dvprofile
1783     faandct
1784     faanidct
1785     fdctdsp
1786     flacdsp
1787     fmtconvert
1788     g722dsp
1789     gmp
1790     golomb
1791     gplv3
1792     h263dsp
1793     h264chroma
1794     h264dsp
1795     h264parse
1796     h264pred
1797     h264qpel
1798     hevcparse
1799     hpeldsp
1800     huffman
1801     huffyuvdsp
1802     huffyuvencdsp
1803     idctdsp
1804     iirfilter
1805     imdct15
1806     intrax8
1807     iso_media
1808     ividsp
1809     jpegtables
1810     lgplv3
1811     libx262
1812     libxcb_shape
1813     lpc
1814     lzf
1815     me_cmp
1816     mpeg_er
1817     mpegaudio
1818     mpegaudiodsp
1819     mpegaudioheader
1820     mpegvideo
1821     mpegvideoenc
1822     mss34dsp
1823     pixblockdsp
1824     qpeldsp
1825     qsv
1826     qsvdec
1827     qsvenc
1828     qsvvpp
1829     rangecoder
1830     riffdec
1831     riffenc
1832     rtpdec
1833     rtpenc_chain
1834     rv34dsp
1835     sinewin
1836     snappy
1837     srtp
1838     startcode
1839     texturedsp
1840     texturedspenc
1841     tpeldsp
1842     vaapi_encode
1843     vc1dsp
1844     videodsp
1845     vp3dsp
1846     vp56dsp
1847     vp8dsp
1848     wma_freqs
1849     wmv2dsp
1850 "
1851
1852 CMDLINE_SELECT="
1853     $ARCH_EXT_LIST
1854     $CONFIG_LIST
1855     $HAVE_LIST_CMDLINE
1856     $THREADS_LIST
1857     asm
1858     cross_compile
1859     debug
1860     extra_warnings
1861     logging
1862     lto
1863     optimizations
1864     rpath
1865 "
1866
1867 PATHS_LIST="
1868     bindir
1869     datadir
1870     docdir
1871     incdir
1872     libdir
1873     mandir
1874     prefix
1875     shlibdir
1876 "
1877
1878 CMDLINE_SET="
1879     $PATHS_LIST
1880     ar
1881     arch
1882     as
1883     cc
1884     objcc
1885     cpu
1886     cross_prefix
1887     custom_allocator
1888     dep_cc
1889     env
1890     extra_version
1891     host_cc
1892     host_cflags
1893     host_extralibs
1894     host_ld
1895     host_ldflags
1896     host_os
1897     ignore_tests
1898     ld
1899     logfile
1900     malloc_prefix
1901     nm
1902     optflags
1903     pkg_config
1904     pkg_config_flags
1905     samples
1906     sysinclude
1907     sysroot
1908     target_exec
1909     target_os
1910     target_path
1911     target_samples
1912     toolchain
1913     x86asmexe
1914 "
1915
1916 CMDLINE_APPEND="
1917     extra_cflags
1918     extra_objcflags
1919     host_cppflags
1920 "
1921
1922 # code dependency declarations
1923
1924 # architecture extensions
1925
1926 armv5te_deps="arm"
1927 armv6_deps="arm"
1928 armv6t2_deps="arm"
1929 armv8_deps="aarch64"
1930 neon_deps_any="aarch64 arm"
1931 intrinsics_neon_deps="neon"
1932 vfp_deps_any="aarch64 arm"
1933 vfpv3_deps="vfp"
1934
1935 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1936
1937 altivec_deps="ppc"
1938 dcbzl_deps="ppc"
1939 ldbrx_deps="ppc"
1940 ppc4xx_deps="ppc"
1941 vsx_deps="altivec"
1942 power8_deps="vsx"
1943
1944 loongson_deps="mips"
1945 mips32r1_deps="mips32"
1946 mips32r2_deps="mips32"
1947 mips32r6_deps="mips32"
1948 mips64r1_deps="mips64"
1949 mips64r2_deps="mips64"
1950 mips64r6_deps="mips64"
1951
1952 vis_deps="sparc"
1953
1954 cpunop_deps="i686"
1955 x86_64_select="i686"
1956 x86_64_suggest="fast_cmov"
1957
1958 amd3dnow_deps="mmx"
1959 amd3dnowext_deps="amd3dnow"
1960 i686_deps="x86"
1961 mmx_deps="x86"
1962 mmxext_deps="mmx"
1963 sse_deps="mmxext"
1964 sse2_deps="sse"
1965 sse3_deps="sse2"
1966 ssse3_deps="sse3"
1967 sse4_deps="ssse3"
1968 sse42_deps="sse4"
1969 avx_deps="sse42"
1970 xop_deps="avx"
1971 fma3_deps="avx"
1972 fma4_deps="avx"
1973 avx2_deps="avx"
1974
1975 mmx_external_deps="x86asm"
1976 mmx_inline_deps="inline_asm x86"
1977 mmx_suggest="mmx_external mmx_inline"
1978
1979 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1980     eval dep=\$${ext}_deps
1981     eval ${ext}_external_deps='"${dep}_external"'
1982     eval ${ext}_inline_deps='"${dep}_inline"'
1983     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1984 done
1985
1986 aligned_stack_if_any="aarch64 ppc x86"
1987 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1988 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1989 fast_unaligned_if_any="aarch64 ppc x86"
1990 simd_align_16_if_any="altivec neon sse"
1991 simd_align_32_if_any="avx"
1992
1993 # system capabilities
1994 symver_if_any="symver_asm_label symver_gnu_asm"
1995 valgrind_backtrace_conflict="optimizations"
1996 valgrind_backtrace_deps="valgrind_valgrind_h"
1997
1998 # threading support
1999 atomics_gcc_if="sync_val_compare_and_swap"
2000 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2001 atomics_win32_if="MemoryBarrier"
2002 atomics_native_if_any="$ATOMICS_LIST"
2003 w32threads_deps="atomics_native CONDITION_VARIABLE"
2004 threads_if_any="$THREADS_LIST"
2005
2006 # subsystems
2007 cbs_h264_select="cbs golomb"
2008 cbs_h265_select="cbs golomb"
2009 cbs_mpeg2_select="cbs"
2010 dct_select="rdft"
2011 dirac_parse_select="golomb"
2012 error_resilience_select="me_cmp"
2013 faandct_deps="faan"
2014 faandct_select="fdctdsp"
2015 faanidct_deps="faan"
2016 faanidct_select="idctdsp"
2017 h264dsp_select="startcode"
2018 hevcparse_select="golomb"
2019 intrax8_select="blockdsp idctdsp"
2020 mdct_select="fft"
2021 rdft_select="fft"
2022 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2023 mpeg_er_select="error_resilience"
2024 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2025 mpegaudiodsp_select="dct"
2026 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2027 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2028 vc1dsp_select="h264chroma qpeldsp startcode"
2029
2030 # decoders / encoders
2031 aac_decoder_select="adts_header imdct15 mdct sinewin"
2032 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2033 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2034 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2035 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2036 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2037 adpcm_g722_decoder_select="g722dsp"
2038 adpcm_g722_encoder_select="g722dsp"
2039 aic_decoder_select="golomb idctdsp"
2040 alac_encoder_select="lpc"
2041 als_decoder_select="bswapdsp"
2042 amrnb_decoder_select="lsp"
2043 amrwb_decoder_select="lsp"
2044 amv_decoder_select="sp5x_decoder"
2045 ape_decoder_select="bswapdsp"
2046 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2047 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2048 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2049 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2050 atrac1_decoder_select="mdct sinewin"
2051 atrac3_decoder_select="mdct"
2052 atrac3p_decoder_select="mdct sinewin"
2053 bink_decoder_select="blockdsp hpeldsp"
2054 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2055 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2056 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2057 clearvideo_decoder_select="idctdsp"
2058 cllc_decoder_select="bswapdsp"
2059 comfortnoise_encoder_select="lpc"
2060 cook_decoder_select="audiodsp mdct sinewin"
2061 cscd_decoder_select="lzo"
2062 cscd_decoder_suggest="zlib"
2063 dca_decoder_select="fmtconvert mdct"
2064 dds_decoder_select="texturedsp"
2065 dnxhd_decoder_select="blockdsp idctdsp"
2066 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2067 dvvideo_decoder_select="dvprofile idctdsp"
2068 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2069 dxa_decoder_deps="zlib"
2070 dxv_decoder_select="lzf texturedsp"
2071 eac3_decoder_select="ac3_decoder"
2072 eac3_encoder_select="ac3_encoder"
2073 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2074 eatgq_decoder_select="aandcttables idctdsp"
2075 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2076 exr_decoder_deps="zlib"
2077 ffv1_decoder_select="rangecoder"
2078 ffv1_encoder_select="rangecoder"
2079 ffvhuff_decoder_select="huffyuv_decoder"
2080 ffvhuff_encoder_select="huffyuv_encoder"
2081 fic_decoder_select="golomb"
2082 flac_decoder_select="flacdsp"
2083 flac_encoder_select="bswapdsp flacdsp lpc"
2084 flashsv_decoder_deps="zlib"
2085 flashsv_encoder_deps="zlib"
2086 flashsv2_decoder_deps="zlib"
2087 flv_decoder_select="h263_decoder"
2088 flv_encoder_select="h263_encoder"
2089 fourxm_decoder_select="blockdsp bswapdsp"
2090 fraps_decoder_select="bswapdsp huffman"
2091 g2m_decoder_deps="zlib"
2092 g2m_decoder_select="blockdsp idctdsp jpegtables"
2093 h261_decoder_select="mpeg_er mpegvideo"
2094 h261_encoder_select="aandcttables mpegvideoenc"
2095 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2096 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2097 h263i_decoder_select="h263_decoder"
2098 h263p_encoder_select="h263_encoder"
2099 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2100 h264_decoder_suggest="error_resilience"
2101 hap_decoder_select="snappy texturedsp"
2102 hap_encoder_deps="libsnappy"
2103 hap_encoder_select="texturedspenc"
2104 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2105 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2106 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2107 iac_decoder_select="imc_decoder"
2108 imc_decoder_select="bswapdsp fft mdct sinewin"
2109 indeo3_decoder_select="hpeldsp"
2110 indeo4_decoder_select="ividsp"
2111 indeo5_decoder_select="ividsp"
2112 interplay_video_decoder_select="hpeldsp"
2113 jpegls_decoder_select="mjpeg_decoder"
2114 jv_decoder_select="blockdsp"
2115 lagarith_decoder_select="huffyuvdsp"
2116 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2117 magicyuv_decoder_select="huffyuvdsp"
2118 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2119 metasound_decoder_select="lsp mdct sinewin"
2120 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2121 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2122 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2123 mjpegb_decoder_select="mjpeg_decoder"
2124 mlp_decoder_select="mlp_parser"
2125 motionpixels_decoder_select="bswapdsp"
2126 mp1_decoder_select="mpegaudio"
2127 mp1float_decoder_select="mpegaudio"
2128 mp2_decoder_select="mpegaudio"
2129 mp2float_decoder_select="mpegaudio"
2130 mp3_decoder_select="mpegaudio"
2131 mp3adu_decoder_select="mpegaudio"
2132 mp3adufloat_decoder_select="mpegaudio"
2133 mp3float_decoder_select="mpegaudio"
2134 mp3on4_decoder_select="mpegaudio"
2135 mp3on4float_decoder_select="mpegaudio"
2136 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2137 mpc8_decoder_select="mpegaudiodsp"
2138 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2139 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2140 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2141 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2142 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2143 mpeg4_encoder_select="h263_encoder"
2144 msa1_decoder_select="mss34dsp"
2145 msmpeg4v1_decoder_select="h263_decoder"
2146 msmpeg4v2_decoder_select="h263_decoder"
2147 msmpeg4v2_encoder_select="h263_encoder"
2148 msmpeg4v3_decoder_select="h263_decoder"
2149 msmpeg4v3_encoder_select="h263_encoder"
2150 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2151 mts2_decoder_select="mss34dsp"
2152 mxpeg_decoder_select="mjpeg_decoder"
2153 nellymoser_decoder_select="mdct sinewin"
2154 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2155 nuv_decoder_select="idctdsp lzo"
2156 on2avc_decoder_select="mdct"
2157 opus_decoder_deps="avresample"
2158 opus_decoder_select="imdct15"
2159 png_decoder_deps="zlib"
2160 png_encoder_deps="zlib"
2161 png_encoder_select="huffyuvencdsp"
2162 prores_decoder_select="idctdsp"
2163 prores_encoder_select="fdctdsp"
2164 qcelp_decoder_select="lsp"
2165 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2166 ra_144_encoder_select="audio_frame_queue lpc"
2167 ralf_decoder_select="golomb"
2168 rscc_decoder_deps="zlib"
2169 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2170 rv10_encoder_select="h263_encoder"
2171 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2172 rv20_encoder_select="h263_encoder"
2173 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2174 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2175 screenpresso_decoder_deps="zlib"
2176 sipr_decoder_select="lsp"
2177 sp5x_decoder_select="mjpeg_decoder"
2178 svq1_decoder_select="hpeldsp"
2179 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2180 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2181 svq3_decoder_suggest="zlib"
2182 tak_decoder_select="audiodsp"
2183 tdsc_decoder_deps="zlib"
2184 tdsc_decoder_select="mjpeg_decoder"
2185 theora_decoder_select="vp3_decoder"
2186 thp_decoder_select="mjpeg_decoder"
2187 tiff_decoder_suggest="zlib"
2188 tiff_encoder_suggest="zlib"
2189 truehd_decoder_select="mlp_decoder"
2190 truemotion2_decoder_select="bswapdsp"
2191 truespeech_decoder_select="bswapdsp"
2192 tscc_decoder_deps="zlib"
2193 txd_decoder_select="texturedsp"
2194 twinvq_decoder_select="mdct lsp sinewin"
2195 utvideo_decoder_select="bswapdsp huffyuvdsp"
2196 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2197 vble_decoder_select="huffyuvdsp"
2198 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2199 vc1image_decoder_select="vc1_decoder"
2200 vorbis_decoder_select="mdct"
2201 vorbis_encoder_select="mdct"
2202 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2203 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2204 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2205 vp6a_decoder_select="vp6_decoder"
2206 vp6f_decoder_select="vp6_decoder"
2207 vp7_decoder_select="h264pred videodsp vp8dsp"
2208 vp8_decoder_select="h264pred videodsp vp8dsp"
2209 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2210 webp_decoder_select="vp8_decoder"
2211 wmapro_decoder_select="mdct sinewin wma_freqs"
2212 wmav1_decoder_select="mdct sinewin wma_freqs"
2213 wmav1_encoder_select="mdct sinewin wma_freqs"
2214 wmav2_decoder_select="mdct sinewin wma_freqs"
2215 wmav2_encoder_select="mdct sinewin wma_freqs"
2216 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2217 wmv1_decoder_select="h263_decoder"
2218 wmv1_encoder_select="h263_encoder"
2219 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2220 wmv2_encoder_select="h263_encoder wmv2dsp"
2221 wmv3_decoder_select="vc1_decoder"
2222 wmv3image_decoder_select="wmv3_decoder"
2223 zerocodec_decoder_deps="zlib"
2224 zlib_decoder_deps="zlib"
2225 zlib_encoder_deps="zlib"
2226 zmbv_decoder_deps="zlib"
2227 zmbv_encoder_deps="zlib"
2228
2229 # hardware accelerators
2230 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2231 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2232 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2233 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2234
2235 h263_vaapi_hwaccel_deps="vaapi"
2236 h263_vaapi_hwaccel_select="h263_decoder"
2237 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2238 h264_cuvid_hwaccel_select="h264_decoder"
2239 h264_d3d11va_hwaccel_deps="d3d11va"
2240 h264_d3d11va_hwaccel_select="h264_decoder"
2241 h264_d3d11va2_hwaccel_deps="d3d11va"
2242 h264_d3d11va2_hwaccel_select="h264_decoder"
2243 h264_dxva2_hwaccel_deps="dxva2"
2244 h264_dxva2_hwaccel_select="h264_decoder"
2245 h264_vaapi_hwaccel_deps="vaapi"
2246 h264_vaapi_hwaccel_select="h264_decoder"
2247 h264_vda_hwaccel_deps="vda"
2248 h264_vda_hwaccel_select="h264_decoder"
2249 h264_vda_old_hwaccel_deps="vda"
2250 h264_vda_old_hwaccel_select="h264_decoder"
2251 h264_vdpau_hwaccel_deps="vdpau"
2252 h264_vdpau_hwaccel_select="h264_decoder"
2253 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2254 hevc_cuvid_hwaccel_select="hevc_decoder"
2255 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2256 hevc_d3d11va_hwaccel_select="hevc_decoder"
2257 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2258 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2259 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2260 hevc_dxva2_hwaccel_select="hevc_decoder"
2261 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2262 hevc_vaapi_hwaccel_select="hevc_decoder"
2263 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2264 hevc_vdpau_hwaccel_select="hevc_decoder"
2265 mpeg1_vdpau_hwaccel_deps="vdpau"
2266 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2267 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2268 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2269 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2270 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2271 mpeg2_dxva2_hwaccel_deps="dxva2"
2272 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2273 mpeg2_vaapi_hwaccel_deps="vaapi"
2274 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2275 mpeg2_vdpau_hwaccel_deps="vdpau"
2276 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2277 mpeg4_vaapi_hwaccel_deps="vaapi"
2278 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2279 mpeg4_vdpau_hwaccel_deps="vdpau"
2280 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2281 vc1_d3d11va_hwaccel_deps="d3d11va"
2282 vc1_d3d11va_hwaccel_select="vc1_decoder"
2283 vc1_d3d11va2_hwaccel_deps="d3d11va"
2284 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2285 vc1_dxva2_hwaccel_deps="dxva2"
2286 vc1_dxva2_hwaccel_select="vc1_decoder"
2287 vc1_vaapi_hwaccel_deps="vaapi"
2288 vc1_vaapi_hwaccel_select="vc1_decoder"
2289 vc1_vdpau_hwaccel_deps="vdpau"
2290 vc1_vdpau_hwaccel_select="vc1_decoder"
2291 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2292 vp8_vaapi_hwaccel_select="vp8_decoder"
2293 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2294 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2295 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2296 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2297 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2298
2299 # hardware-accelerated codecs
2300 amf_deps_any="libdl LoadLibrary"
2301 nvenc_deps_any="libdl LoadLibrary"
2302 omx_deps="libdl pthreads"
2303 omx_rpi_select="omx"
2304 qsv_deps="libmfx"
2305 qsvdec_select="qsv"
2306 qsvenc_select="qsv"
2307 qsvvpp_select="qsv"
2308 vaapi_encode_deps="vaapi"
2309
2310 hwupload_cuda_filter_deps="cuda"
2311 scale_npp_filter_deps="cuda libnpp"
2312
2313 h264_amf_encoder_deps="amf"
2314 h264_mmal_decoder_deps="mmal"
2315 h264_nvenc_encoder_deps="nvenc"
2316 h264_omx_encoder_deps="omx"
2317 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2318 h264_qsv_encoder_select="qsvenc"
2319 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2320 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2321 hevc_amf_encoder_deps="amf"
2322 hevc_nvenc_encoder_deps="nvenc"
2323 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2324 hevc_qsv_encoder_select="hevcparse qsvenc"
2325 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2326 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2327 mjpeg_qsv_encoder_deps="libmfx"
2328 mjpeg_qsv_encoder_select="qsvenc"
2329 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2330 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2331 mpeg2_mmal_decoder_deps="mmal"
2332 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2333 mpeg2_qsv_encoder_select="qsvenc"
2334 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2335 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2336 mpeg4_omx_encoder_deps="omx"
2337 vc1_mmal_decoder_deps="mmal"
2338 vc1_qsv_decoder_select="qsvdec vc1_parser"
2339 vp8_qsv_decoder_select="qsvdec vp8_parser"
2340 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2341 vp8_vaapi_encoder_select="vaapi_encode"
2342 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2343 vp9_vaapi_encoder_select="vaapi_encode"
2344
2345 nvenc_h264_encoder_select="h264_nvenc_encoder"
2346 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2347
2348 # parsers
2349 aac_parser_select="adts_header"
2350 h264_parser_select="golomb h264dsp h264parse"
2351 hevc_parser_select="hevcparse"
2352 mpegaudio_parser_select="mpegaudioheader"
2353 mpegvideo_parser_select="mpegvideo"
2354 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2355 vc1_parser_select="vc1dsp"
2356
2357 # bitstream_filters
2358 aac_adtstoasc_bsf_select="adts_header"
2359 h264_metadata_bsf_select="cbs_h264"
2360 h264_redundant_pps_bsf_select="cbs_h264"
2361 hevc_metadata_bsf_select="cbs_h265"
2362 mjpeg2jpeg_bsf_select="jpegtables"
2363 mpeg2_metadata_bsf_select="cbs_mpeg2"
2364 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2365
2366 # external libraries
2367 avisynth_deps="LoadLibrary"
2368 avxsynth_deps="libdl"
2369 avisynth_demuxer_deps_any="avisynth avxsynth"
2370 avisynth_demuxer_select="riffdec"
2371 libaom_av1_decoder_deps="libaom"
2372 libaom_av1_encoder_deps="libaom"
2373 libdcadec_decoder_deps="libdcadec"
2374 libfaac_encoder_deps="libfaac"
2375 libfaac_encoder_select="audio_frame_queue"
2376 libfdk_aac_decoder_deps="libfdk_aac"
2377 libfdk_aac_encoder_deps="libfdk_aac"
2378 libfdk_aac_encoder_select="audio_frame_queue"
2379 libgsm_decoder_deps="libgsm"
2380 libgsm_encoder_deps="libgsm"
2381 libgsm_ms_decoder_deps="libgsm"
2382 libgsm_ms_encoder_deps="libgsm"
2383 libilbc_decoder_deps="libilbc"
2384 libilbc_encoder_deps="libilbc"
2385 libkvazaar_encoder_deps="libkvazaar"
2386 libmp3lame_encoder_deps="libmp3lame"
2387 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2388 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2389 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2390 libopencore_amrnb_encoder_select="audio_frame_queue"
2391 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2392 libopenh264_decoder_deps="libopenh264"
2393 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2394 libopenh264_encoder_deps="libopenh264"
2395 libopenjpeg_decoder_deps="libopenjpeg"
2396 libopenjpeg_encoder_deps="libopenjpeg"
2397 libopus_decoder_deps="libopus"
2398 libopus_encoder_deps="libopus"
2399 libopus_encoder_select="audio_frame_queue"
2400 libschroedinger_decoder_deps="libschroedinger"
2401 libschroedinger_encoder_deps="libschroedinger"
2402 libspeex_decoder_deps="libspeex"
2403 libspeex_encoder_deps="libspeex"
2404 libspeex_encoder_select="audio_frame_queue"
2405 libtheora_encoder_deps="libtheora"
2406 libtwolame_encoder_deps="libtwolame"
2407 libvo_aacenc_encoder_deps="libvo_aacenc"
2408 libvo_aacenc_encoder_select="audio_frame_queue"
2409 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2410 libvorbis_encoder_deps="libvorbis"
2411 libvorbis_encoder_select="audio_frame_queue"
2412 libvpx_vp8_decoder_deps="libvpx"
2413 libvpx_vp8_encoder_deps="libvpx"
2414 libvpx_vp9_decoder_deps="libvpx"
2415 libvpx_vp9_encoder_deps="libvpx"
2416 libwavpack_encoder_deps="libwavpack"
2417 libwavpack_encoder_select="audio_frame_queue"
2418 libwebp_encoder_deps="libwebp"
2419 libx262_encoder_deps="libx262"
2420 libx264_encoder_deps="libx264"
2421 libx265_encoder_deps="libx265"
2422 libxavs_encoder_deps="libxavs"
2423 libxvid_encoder_deps="libxvid mkstemp"
2424
2425 # demuxers / muxers
2426 ac3_demuxer_select="ac3_parser"
2427 asf_demuxer_select="riffdec"
2428 asf_muxer_select="riffenc"
2429 asf_stream_muxer_select="asf_muxer"
2430 avi_demuxer_select="iso_media riffdec"
2431 avi_muxer_select="riffenc"
2432 caf_demuxer_select="iso_media riffdec"
2433 dash_muxer_select="mp4_muxer"
2434 dirac_demuxer_select="dirac_parser"
2435 dv_demuxer_select="dvprofile"
2436 dv_muxer_select="dvprofile"
2437 dxa_demuxer_select="riffdec"
2438 eac3_demuxer_select="ac3_parser"
2439 f4v_muxer_select="mov_muxer"
2440 flac_demuxer_select="flac_parser"
2441 hds_muxer_select="flv_muxer"
2442 hls_muxer_select="mpegts_muxer"
2443 ipod_muxer_select="mov_muxer"
2444 ismv_muxer_select="mov_muxer"
2445 matroska_audio_muxer_select="matroska_muxer"
2446 matroska_demuxer_select="iso_media riffdec"
2447 matroska_demuxer_suggest="bzlib lzo zlib"
2448 matroska_muxer_select="iso_media riffenc"
2449 mmf_muxer_select="riffenc"
2450 mov_demuxer_select="iso_media riffdec"
2451 mov_demuxer_suggest="zlib"
2452 mov_muxer_select="iso_media riffenc rtpenc_chain"
2453 mp3_demuxer_select="mpegaudio_parser"
2454 mp3_muxer_select="mpegaudioheader"
2455 mp4_muxer_select="mov_muxer"
2456 mpegts_demuxer_select="iso_media"
2457 mpegts_muxer_select="adts_muxer latm_muxer"
2458 mpegtsraw_demuxer_select="mpegts_demuxer"
2459 mxf_d10_muxer_select="mxf_muxer"
2460 nut_muxer_select="riffenc"
2461 nuv_demuxer_select="riffdec"
2462 oga_muxer_select="ogg_muxer"
2463 ogg_demuxer_select="dirac_parse"
2464 opus_muxer_select="ogg_muxer"
2465 psp_muxer_select="mov_muxer"
2466 rtp_demuxer_select="sdp_demuxer"
2467 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2468 rtsp_demuxer_select="http_protocol rtpdec"
2469 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2470 sap_demuxer_select="sdp_demuxer"
2471 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2472 sdp_demuxer_select="rtpdec"
2473 smoothstreaming_muxer_select="ismv_muxer"
2474 spdif_demuxer_select="adts_header"
2475 spdif_muxer_select="adts_header"
2476 spx_muxer_select="ogg_muxer"
2477 swf_demuxer_suggest="zlib"
2478 tak_demuxer_select="tak_parser"
2479 tg2_muxer_select="mov_muxer"
2480 tgp_muxer_select="mov_muxer"
2481 w64_demuxer_select="wav_demuxer"
2482 wav_demuxer_select="riffdec"
2483 wav_muxer_select="riffenc"
2484 webm_muxer_select="iso_media riffenc"
2485 wtv_demuxer_select="mpegts_demuxer riffdec"
2486 xmv_demuxer_select="riffdec"
2487 xwma_demuxer_select="riffdec"
2488
2489 # indevs
2490 alsa_indev_deps="alsa"
2491 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2492 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2493 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2494 fbdev_indev_deps="linux_fb_h"
2495 jack_indev_deps="libjack"
2496 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2497 libcdio_indev_deps="libcdio"
2498 libdc1394_indev_deps="libdc1394"
2499 oss_indev_deps_any="sys_soundcard_h"
2500 pulse_indev_deps="libpulse"
2501 sndio_indev_deps="sndio"
2502 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2503 vfwcap_indev_deps="vfw32 vfwcap_defines"
2504 xcbgrab_indev_deps="libxcb libxcb_shape"
2505 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2506
2507 # protocols
2508 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2509 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2510 ffrtmpcrypt_protocol_select="tcp_protocol"
2511 ffrtmphttp_protocol_conflict="librtmp_protocol"
2512 ffrtmphttp_protocol_select="http_protocol"
2513 gopher_protocol_select="network"
2514 http_protocol_select="tcp_protocol"
2515 http_protocol_suggest="zlib"
2516 httpproxy_protocol_select="tcp_protocol"
2517 httpproxy_protocol_suggest="zlib"
2518 https_protocol_select="tls_protocol"
2519 https_protocol_suggest="zlib"
2520 icecast_protocol_select="http_protocol"
2521 mmsh_protocol_select="http_protocol"
2522 mmst_protocol_select="network"
2523 rtmp_protocol_conflict="librtmp_protocol"
2524 rtmp_protocol_select="tcp_protocol"
2525 rtmp_protocol_suggest="zlib"
2526 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2527 rtmpe_protocol_suggest="zlib"
2528 rtmps_protocol_conflict="librtmp_protocol"
2529 rtmps_protocol_select="tls_protocol"
2530 rtmps_protocol_suggest="zlib"
2531 rtmpt_protocol_select="ffrtmphttp_protocol"
2532 rtmpt_protocol_suggest="zlib"
2533 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2534 rtmpte_protocol_suggest="zlib"
2535 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2536 rtmpts_protocol_suggest="zlib"
2537 rtp_protocol_select="udp_protocol"
2538 sctp_protocol_deps="struct_sctp_event_subscribe"
2539 sctp_protocol_select="network"
2540 srtp_protocol_select="rtp_protocol srtp"
2541 tcp_protocol_select="network"
2542 tls_protocol_deps_any="gnutls openssl"
2543 tls_protocol_select="tcp_protocol"
2544 udp_protocol_select="network"
2545 unix_protocol_deps="sys_un_h"
2546 unix_protocol_select="network"
2547
2548 # external library protocols
2549 librtmp_protocol_deps="librtmp"
2550 librtmpe_protocol_deps="librtmp"
2551 librtmps_protocol_deps="librtmp"
2552 librtmpt_protocol_deps="librtmp"
2553 librtmpte_protocol_deps="librtmp"
2554 libsrt_protocol_deps="libsrt"
2555 libsrt_protocol_select="network"
2556
2557 # filters
2558 asyncts_filter_deps="avresample"
2559 blackframe_filter_deps="gpl"
2560 boxblur_filter_deps="gpl"
2561 bs2b_filter_deps="libbs2b"
2562 cropdetect_filter_deps="gpl"
2563 deinterlace_qsv_filter_deps="libmfx"
2564 deinterlace_vaapi_filter_deps="vaapi"
2565 delogo_filter_deps="gpl"
2566 drawtext_filter_deps="libfreetype"
2567 drawtext_filter_suggest="libfontconfig"
2568 frei0r_filter_deps="frei0r libdl"
2569 frei0r_src_filter_deps="frei0r libdl"
2570 hdcd_filter_deps="libhdcd"
2571 hqdn3d_filter_deps="gpl"
2572 interlace_filter_deps="gpl"
2573 movie_filter_deps="avcodec avformat"
2574 ocv_filter_deps="libopencv"
2575 overlay_qsv_filter_deps="libmfx"
2576 overlay_qsv_filter_select="qsvvpp"
2577 resample_filter_deps="avresample"
2578 scale_filter_deps="swscale"
2579 scale_qsv_filter_deps="libmfx"
2580 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2581 vpp_qsv_filter_deps="libmfx"
2582 vpp_qsv_filter_select="qsvvpp"
2583
2584 # examples
2585 decode_audio_example_deps="avcodec avutil"
2586 decode_video_example_deps="avcodec avutil"
2587 encode_audio_example_deps="avcodec avutil"
2588 encode_video_example_deps="avcodec avutil"
2589 filter_audio_example_deps="avfilter avutil"
2590 metadata_example_deps="avformat avutil"
2591 output_example_deps="avcodec avformat avresample avutil swscale"
2592 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2593 transcode_aac_example_deps="avcodec avformat avresample"
2594
2595 # EXTRALIBS_LIST
2596 cpu_init_extralibs="pthreads_extralibs"
2597 cws2fws_extralibs="zlib_extralibs"
2598
2599 # libraries, in linking order
2600 avcodec_deps="avutil"
2601 avcodec_select="null_bsf"
2602 avdevice_deps="avformat avcodec avutil"
2603 avfilter_deps="avutil"
2604 avformat_deps="avcodec avutil"
2605 avformat_suggest="network"
2606 avresample_deps="avutil"
2607 swscale_deps="avutil"
2608
2609 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2610 avdevice_extralibs="libm_extralibs"
2611 avformat_extralibs="libm_extralibs"
2612 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2613 avresample_extralibs="libm_extralibs"
2614 avutil_extralibs="bcrypt_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"
2615 swscale_extralibs="libm_extralibs"
2616
2617 # programs
2618 avconv_deps="avcodec avfilter avformat avresample swscale"
2619 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2620                fps_filter null_filter resample_filter scale_filter
2621                trim_filter"
2622 avconv_suggest="psapi shell32"
2623 avplay_deps="avcodec avfilter avformat avresample sdl"
2624 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2625 avplay_suggest="shell32"
2626 avprobe_deps="avcodec avformat"
2627 avprobe_suggest="shell32"
2628
2629 # documentation
2630 pod2man_deps="doc"
2631 texi2html_deps="doc"
2632
2633 # default parameters
2634
2635 logfile="avbuild/config.log"
2636
2637 # installation paths
2638 prefix_default="/usr/local"
2639 bindir_default='${prefix}/bin'
2640 datadir_default='${prefix}/share/avconv'
2641 docdir_default='${prefix}/share/doc/libav'
2642 incdir_default='${prefix}/include'
2643 libdir_default='${prefix}/lib'
2644 mandir_default='${prefix}/share/man'
2645 shlibdir_default="$libdir_default"
2646
2647 # toolchain
2648 ar_default="ar"
2649 cc_default="gcc"
2650 host_cc_default="gcc"
2651 x86asmexe_default="nasm"
2652 ln_s="ln -s -f"
2653 nm_default="nm -g"
2654 pkg_config_default=pkg-config
2655 ranlib="ranlib"
2656 strip="strip"
2657 version_script='--version-script'
2658 objformat="elf32"
2659
2660 # machine
2661 arch_default=$(uname -m)
2662 cpu="generic"
2663 intrinsics="none"
2664
2665 # OS
2666 target_os_default=$(tolower $(uname -s))
2667 host_os=$target_os_default
2668
2669 # configurable options
2670 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2671
2672 enable asm
2673 enable debug
2674 enable doc
2675 enable faan faandct faanidct
2676 enable optimizations
2677 enable safe_bitstream_reader
2678 enable static
2679 enable swscale_alpha
2680 enable valgrind_backtrace
2681
2682 # By default, enable only those hwaccels that have no external dependencies.
2683 enable d3d11va dxva2 vda vdpau
2684
2685 # internal components are enabled by default
2686 enable $EXTRALIBS_LIST
2687
2688 # Avoid external, non-system, libraries getting enabled by dependency resolution
2689 disable $EXTERNAL_LIBRARY_LIST
2690
2691 # build settings
2692 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2693 LIBPREF="lib"
2694 LIBSUF=".a"
2695 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2696 SLIBPREF="lib"
2697 SLIBSUF=".so"
2698 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2699 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2700 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2701 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2702 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2703 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2704 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2705
2706 asflags_filter=echo
2707 cflags_filter=echo
2708 ldflags_filter=echo
2709
2710 AS_C='-c'
2711 AS_O='-o $@'
2712 CC_C='-c'
2713 CC_E='-E -o $@'
2714 CC_O='-o $@'
2715 OBJCC_C='-c'
2716 OBJCC_E='-E -o $@'
2717 OBJCC_O='-o $@'
2718 X86ASM_O='-o $@'
2719 LD_O='-o $@'
2720 LD_LIB='-l%'
2721 LD_PATH='-L'
2722 HOSTCC_C='-c'
2723 HOSTCC_E='-E -o $@'
2724 HOSTCC_O='-o $@'
2725 HOSTLD_O='-o $@'
2726
2727 host_extralibs='-lm'
2728 host_cflags_filter=echo
2729 host_ldflags_filter=echo
2730
2731 target_path='$(CURDIR)'
2732
2733 # since the object filename is not given with the -MM flag, the compiler
2734 # is only able to print the basename, and we must add the path ourselves
2735 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2736 DEPFLAGS='-MM'
2737
2738 mkdir -p avbuild
2739
2740 # find source path
2741 if test -f configure; then
2742     source_path=.
2743 else
2744     source_path=$(cd $(dirname "$0"); pwd)
2745     echo "$source_path" | grep -q '[[:blank:]]' &&
2746         die "Out of tree builds are impossible with whitespace in source path."
2747     test -e "$source_path/config.h" &&
2748         die "Out of tree builds are impossible with config.h in source dir."
2749 fi
2750
2751 for v in "$@"; do
2752     r=${v#*=}
2753     l=${v%"$r"}
2754     r=$(sh_quote "$r")
2755     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2756 done
2757
2758 find_things(){
2759     thing=$1
2760     pattern=$2
2761     file=$source_path/$3
2762     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2763 }
2764
2765 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2766 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2767 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2768 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2769 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2770 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2771 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2772
2773 find_things_extern(){
2774     thing=$1
2775     pattern=$2
2776     file=$source_path/$3
2777     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2778 }
2779
2780 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2781 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2782 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2783
2784 AVCODEC_COMPONENTS_LIST="
2785     $BSF_LIST
2786     $DECODER_LIST
2787     $ENCODER_LIST
2788     $HWACCEL_LIST
2789     $PARSER_LIST
2790 "
2791
2792 AVDEVICE_COMPONENTS_LIST="
2793     $INDEV_LIST
2794 "
2795
2796 AVFILTER_COMPONENTS_LIST="
2797     $FILTER_LIST
2798 "
2799
2800 AVFORMAT_COMPONENTS_LIST="
2801     $DEMUXER_LIST
2802     $MUXER_LIST
2803     $PROTOCOL_LIST
2804 "
2805
2806 ALL_COMPONENTS="
2807     $AVCODEC_COMPONENTS_LIST
2808     $AVDEVICE_COMPONENTS_LIST
2809     $AVFILTER_COMPONENTS_LIST
2810     $AVFORMAT_COMPONENTS_LIST
2811 "
2812
2813 for n in $COMPONENT_LIST; do
2814     v=$(toupper ${n%s})_LIST
2815     eval enable \$$v
2816     eval ${n}_if_any="\$$v"
2817 done
2818
2819 enable $ARCH_EXT_LIST
2820
2821 die_unknown(){
2822     echo "Unknown option \"$1\"."
2823     echo "See $0 --help for available options."
2824     exit 1
2825 }
2826
2827 print_3_columns() {
2828     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2829 }
2830
2831 show_list() {
2832     suffix=_$1
2833     shift
2834     echo $* | sed s/$suffix//g | print_3_columns
2835     exit 0
2836 }
2837
2838 for opt do
2839     optval="${opt#*=}"
2840     case "$opt" in
2841         --extra-ldflags=*)
2842             add_ldflags $optval
2843         ;;
2844         --extra-ldexeflags=*)
2845             add_ldexeflags $optval
2846         ;;
2847         --extra-ldsoflags=*)
2848             add_ldsoflags $optval
2849         ;;
2850         --extra-libs=*)
2851             add_extralibs $optval
2852         ;;
2853         --disable-devices)
2854             disable $INDEV_LIST
2855         ;;
2856         --enable-debug=*)
2857             debuglevel="$optval"
2858         ;;
2859         --disable-programs)
2860             disable $PROGRAM_LIST
2861         ;;
2862         --disable-everything)
2863             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2864         ;;
2865         --disable-all)
2866             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2867             disable $LIBRARY_LIST $PROGRAM_LIST doc
2868         ;;
2869         --enable-*=*|--disable-*=*)
2870             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2871             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2872             eval list=\$$(toupper $thing)_LIST
2873             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2874             $action $(filter "$name" $list)
2875         ;;
2876         --enable-yasm|--disable-yasm)
2877             warn "The ${opt} option is only provided for compatibility and will be\n"\
2878                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2879             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2880         ;;
2881         --enable-?*|--disable-?*)
2882             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2883             if is_in $option $COMPONENT_LIST; then
2884                 test $action = disable && action=unset
2885                 eval $action \$$(toupper ${option%s})_LIST
2886             elif is_in $option $CMDLINE_SELECT; then
2887                 $action $option
2888             else
2889                 die_unknown $opt
2890             fi
2891         ;;
2892         --list-*)
2893             NAME="${opt#--list-}"
2894             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2895             NAME=${NAME%s}
2896             eval show_list $NAME \$$(toupper $NAME)_LIST
2897         ;;
2898         --help|-h) show_help
2899         ;;
2900         --quiet|-q) quiet=yes
2901         ;;
2902         *)
2903             optname="${opt%%=*}"
2904             optname="${optname#--}"
2905             optname=$(echo "$optname" | sed 's/-/_/g')
2906             if is_in $optname $CMDLINE_SET; then
2907                 eval $optname='$optval'
2908             elif is_in $optname $CMDLINE_APPEND; then
2909                 append $optname "$optval"
2910             else
2911                 die_unknown $opt
2912             fi
2913         ;;
2914     esac
2915 done
2916
2917 for e in $env; do
2918     eval "export $e"
2919 done
2920
2921 disabled logging && logfile=/dev/null
2922
2923 # command line configuration sanity checks
2924
2925 # we need to build at least one lib type
2926 if ! enabled_any static shared; then
2927     cat <<EOF
2928 At least one library type must be built.
2929 Specify --enable-static to build the static libraries or --enable-shared to
2930 build the shared libraries as well. To only build the shared libraries specify
2931 --disable-static in addition to --enable-shared.
2932 EOF
2933     exit 1
2934 fi
2935
2936 # Die early if licensing-related configure options are incompatible.
2937 die_license_disabled() {
2938     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2939 }
2940
2941 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2942 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2943 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2944
2945 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2946
2947 if enabled nonfree; then
2948     license="nonfree and unredistributable"
2949 elif enabled gplv3; then
2950     license="GPL version 3 or later"
2951 elif enabled lgplv3; then
2952     license="LGPL version 3 or later"
2953 elif enabled gpl; then
2954     license="GPL version 2 or later"
2955 else
2956     license="LGPL version 2.1 or later"
2957 fi
2958
2959 enabled_all gnutls openssl &&
2960     die "GnuTLS and OpenSSL must not be enabled at the same time."
2961
2962 # Disable all the library-specific components if the library itself
2963 # is disabled, see AVCODEC_LIST and following _LIST variables.
2964
2965 disable_components(){
2966     disabled ${1} && disable $(
2967         eval components="\$$(toupper ${1})_COMPONENTS"
2968         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2969     )
2970 }
2971
2972 map 'disable_components $v' $LIBRARY_LIST
2973
2974 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2975 set >> $logfile
2976
2977 case "$toolchain" in
2978     *-asan)
2979         cc_default="${toolchain%-asan}"
2980         add_cflags  -fsanitize=address
2981         add_ldflags -fsanitize=address
2982     ;;
2983     *-msan)
2984         cc_default="${toolchain%-msan}"
2985         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2986         add_ldflags -fsanitize=memory
2987     ;;
2988     *-tsan)
2989         cc_default="${toolchain%-tsan}"
2990         add_cflags  -fsanitize=thread -fPIE
2991         add_ldflags -fsanitize=thread -pie
2992         case "$toolchain" in
2993             gcc-tsan)
2994                 add_cflags  -fPIC
2995                 add_ldflags -fPIC
2996                 ;;
2997         esac
2998     ;;
2999     *-usan)
3000         cc_default="${toolchain%-usan}"
3001         add_cflags  -fsanitize=undefined
3002         add_ldflags -fsanitize=undefined
3003         case "$toolchain" in
3004             clang-usan)
3005                 add_cflags -O1
3006                 ;;
3007         esac
3008     ;;
3009     valgrind-*)
3010         target_exec_default="valgrind"
3011         case "$toolchain" in
3012             valgrind-massif)
3013                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3014                 ;;
3015             valgrind-memcheck)
3016                 target_exec_args="--track-origins=yes --leak-check=full"
3017                 ;;
3018         esac
3019     ;;
3020     msvc)
3021         # Check whether the current MSVC version needs the C99 converter.
3022         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3023         # support enough of C99 to build libav. Default to the new
3024         # behaviour if the regexp was unable to match anything, since this
3025         # successfully parses the version number of existing supported
3026         # versions that require the converter (MSVC 2010 and 2012).
3027         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3028         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3029             cc_default="cl"
3030         else
3031             cc_default="c99wrap cl"
3032         fi
3033         ld_default="$source_path/compat/windows/mslink"
3034         nm_default="dumpbin -symbols"
3035         ar_default="lib"
3036         case "$arch" in
3037         aarch64|arm64)
3038             as_default="armasm64"
3039             ;;
3040         arm*)
3041             as_default="armasm"
3042             ;;
3043         esac
3044         target_os_default="win32"
3045         # Use a relative path for TMPDIR. This makes sure all the
3046         # ffconf temp files are written with a relative path, avoiding
3047         # issues with msys/win32 path conversion for MSVC parameters
3048         # such as -Fo<file> or -out:<file>.
3049         TMPDIR=.
3050     ;;
3051     icl)
3052         cc_default="icl"
3053         ld_default="xilink"
3054         nm_default="dumpbin -symbols"
3055         ar_default="xilib"
3056         target_os_default="win32"
3057         TMPDIR=.
3058     ;;
3059     gcov)
3060         add_cflags  -fprofile-arcs -ftest-coverage
3061         add_ldflags -fprofile-arcs -ftest-coverage
3062     ;;
3063     llvm-cov)
3064         add_cflags -fprofile-arcs -ftest-coverage
3065         add_ldflags --coverage
3066     ;;
3067     hardened)
3068         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3069         add_cflags   -fno-strict-overflow -fstack-protector-all
3070         add_ldflags  -Wl,-z,relro -Wl,-z,now
3071     ;;
3072     ?*)
3073         die "Unknown toolchain $toolchain"
3074     ;;
3075 esac
3076
3077 if test -n "$cross_prefix"; then
3078     test -n "$arch" && test -n "$target_os" ||
3079         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3080     enable cross_compile
3081 fi
3082
3083 ar_default="${cross_prefix}${ar_default}"
3084 cc_default="${cross_prefix}${cc_default}"
3085 objcc_default="${cross_prefix}${objcc_default}"
3086 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3087 nm_default="${cross_prefix}${nm_default}"
3088 pkg_config_default="${cross_prefix}${pkg_config_default}"
3089 ranlib="${cross_prefix}${ranlib}"
3090 strip="${cross_prefix}${strip}"
3091
3092 sysinclude_default="${sysroot}/usr/include"
3093
3094 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3095 enabled cross_compile || host_cc_default=$cc
3096 set_default host_cc
3097
3098 if ! $pkg_config --version >/dev/null 2>&1; then
3099     warn "$pkg_config not found, library detection may fail."
3100     pkg_config=false
3101 fi
3102
3103 exesuf() {
3104     case $1 in
3105         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3106     esac
3107 }
3108
3109 EXESUF=$(exesuf $target_os)
3110 HOSTEXESUF=$(exesuf $host_os)
3111
3112 # set temporary file name
3113 : ${TMPDIR:=$TEMPDIR}
3114 : ${TMPDIR:=$TMP}
3115 : ${TMPDIR:=/tmp}
3116
3117 if ! test_cmd mktemp -u XXXXXX; then
3118     # simple replacement for missing mktemp
3119     # NOT SAFE FOR GENERAL USE
3120     mktemp(){
3121         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3122         echo "$tmpname"
3123         mkdir "$tmpname"
3124     }
3125 fi
3126
3127 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3128     die "Unable to create temporary directory in $TMPDIR."
3129
3130 tmpfile(){
3131     tmp="${AVTMPDIR}/test"$2
3132     (set -C; exec > $tmp) 2> /dev/null ||
3133         die "Unable to create temporary file in $AVTMPDIR."
3134     eval $1=$tmp
3135 }
3136
3137 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3138 trap 'exit 2' INT
3139
3140 tmpfile TMPASM .asm
3141 tmpfile TMPC   .c
3142 tmpfile TMPE   $EXESUF
3143 tmpfile TMPH   .h
3144 tmpfile TMPO   .o
3145 tmpfile TMPS   .S
3146 tmpfile TMPSH  .sh
3147 tmpfile TMPV   .ver
3148
3149 unset -f mktemp
3150
3151 chmod +x $TMPE
3152
3153 # make sure we can execute files in $TMPDIR
3154 cat > $TMPSH 2>> $logfile <<EOF
3155 #! /bin/sh
3156 EOF
3157 chmod +x $TMPSH >> $logfile 2>&1
3158 if ! $TMPSH >> $logfile 2>&1; then
3159     cat <<EOF
3160 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3161 variable to another directory and make sure that it is not mounted noexec.
3162 EOF
3163     die "Sanity test failed."
3164 fi
3165
3166 armasm_flags(){
3167     for flag; do
3168         case $flag in
3169             # Filter out MSVC cl.exe options from cflags that shouldn't
3170             # be passed to gas-preprocessor
3171             -M[TD]*)                                            ;;
3172             *)                  echo $flag                      ;;
3173         esac
3174    done
3175 }
3176
3177 cparser_flags(){
3178     for flag; do
3179         case $flag in
3180             -Wno-switch)             echo -Wno-switch-enum ;;
3181             -Wno-format-zero-length) ;;
3182             -Wdisabled-optimization) ;;
3183             -Wno-pointer-sign)       echo -Wno-other ;;
3184             *)                       echo $flag ;;
3185         esac
3186     done
3187 }
3188
3189 msvc_common_flags(){
3190     for flag; do
3191         case $flag in
3192             # In addition to specifying certain flags under the compiler
3193             # specific filters, they must be specified here as well or else the
3194             # generic catch all at the bottom will print the original flag.
3195             -Wall)                ;;
3196             -Wextra)              ;;
3197             -std=c99)             ;;
3198             # Common flags
3199             -fomit-frame-pointer) ;;
3200             -g)                   echo -Z7 ;;
3201             -fno-math-errno)      ;;
3202             -fno-common)          ;;
3203             -fno-signed-zeros)    ;;
3204             -fPIC)                ;;
3205             -mthumb)              ;;
3206             -march=*)             ;;
3207             -lz)                  echo zlib.lib ;;
3208             -lx264)               echo libx264.lib ;;
3209             -l*)                  echo ${flag#-l}.lib ;;
3210             -L*)                  echo -libpath:${flag#-L} ;;
3211             *)                    echo $flag ;;
3212         esac
3213     done
3214 }
3215
3216 msvc_flags(){
3217     msvc_common_flags "$@"
3218     for flag; do
3219         case $flag in
3220             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3221                                        -wd4554 ;;
3222             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3223                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3224                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3225                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3226         esac
3227     done
3228 }
3229
3230 icl_flags(){
3231     msvc_common_flags "$@"
3232     for flag; do
3233         case $flag in
3234             # Despite what Intel's documentation says -Wall, which is supported
3235             # on Windows, does enable remarks so disable them here.
3236             -Wall)                echo $flag -Qdiag-disable:remark ;;
3237             -std=c99)             echo -Qstd=c99 ;;
3238         esac
3239     done
3240 }
3241
3242 suncc_flags(){
3243     for flag; do
3244         case $flag in
3245             -march=*|-mcpu=*)
3246                 case "${flag#*=}" in
3247                     native)                   echo -xtarget=native       ;;
3248                     v9|niagara)               echo -xarch=sparc          ;;
3249                     ultrasparc)               echo -xarch=sparcvis       ;;
3250                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3251                     i586|pentium)             echo -xchip=pentium        ;;
3252                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3253                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3254                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3255                     pentium4*)          echo -xtarget=pentium4           ;;
3256                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3257                     *-sse3)             echo -xarch=sse3                 ;;
3258                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3259                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3260                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3261                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3262                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3263                     k8|opteron|athlon64|athlon-fx)
3264                                                echo -xarch=sse2a         ;;
3265                     athlon*)                   echo -xarch=pentium_proa  ;;
3266                 esac
3267                 ;;
3268             -std=c99)             echo -xc99              ;;
3269             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3270             -fPIC)                echo -KPIC -xcode=pic32 ;;
3271             -W*,*)                echo $flag              ;;
3272             -f*-*|-W*|-mimpure-text)                      ;;
3273             -shared)              echo -G                 ;;
3274             *)                    echo $flag              ;;
3275         esac
3276     done
3277 }
3278
3279 probe_cc(){
3280     pfx=$1
3281     _cc=$2
3282
3283     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3284     unset _ld_o _ldflags _ld_lib _ld_path
3285     unset _depflags _DEPCMD _DEPFLAGS
3286     _flags_filter=echo
3287
3288     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3289         _type=llvm_gcc
3290         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3291         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3292         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3293         _cflags_speed='-O3'
3294         _cflags_size='-Os'
3295     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3296         _type=gcc
3297         gcc_version=$($_cc --version | head -n1)
3298         gcc_basever=$($_cc -dumpversion)
3299         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3300         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3301         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3302         if ! $_cc -dumpversion | grep -q '^2\.'; then
3303             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3304         fi
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3308         _type=icc
3309         _ident=$($_cc --version | head -n1)
3310         _depflags='-MMD'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313         _cflags_noopt='-O1'
3314     elif $_cc -v 2>&1 | grep -q xlc; then
3315         _type=xlc
3316         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3317         _cflags_speed='-O5'
3318         _cflags_size='-O5 -qcompact'
3319     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3320         test -d "$sysroot" || die "No valid sysroot specified."
3321         _type=armcc
3322         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3323         armcc_conf="$PWD/armcc.conf"
3324         $_cc --arm_linux_configure                 \
3325              --arm_linux_config_file="$armcc_conf" \
3326              --configure_sysroot="$sysroot"        \
3327              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3328              die "Error creating armcc configuration file."
3329         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3330         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3331         as_default="${cross_prefix}gcc"
3332         _depflags='-MMD'
3333         _cflags_speed='-O3'
3334         _cflags_size='-Os'
3335     elif $_cc -v 2>&1 | grep -q clang; then
3336         _type=clang
3337         _ident=$($_cc --version 2>/dev/null | head -n1)
3338         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3339         _cflags_speed='-O3'
3340         _cflags_size='-Os'
3341     elif $_cc -V 2>&1 | grep -q Sun; then
3342         _type=suncc
3343         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3344         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3345         _DEPFLAGS='-xM1 -xc99'
3346         _ldflags='-std=c99'
3347         _cflags_speed='-O5'
3348         _cflags_size='-O5 -xspace'
3349         _flags_filter=suncc_flags
3350     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3351         _type=pathscale
3352         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3354         _cflags_speed='-O2'
3355         _cflags_size='-Os'
3356         _flags_filter='filter_out -Wdisabled-optimization'
3357     elif $_cc -v 2>&1 | grep -q Open64; then
3358         _type=open64
3359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3361         _cflags_speed='-O2'
3362         _cflags_size='-Os'
3363         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3364     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3365         _type=armasm
3366         _ident=$($_cc | head -n1)
3367         # 4509: "This form of conditional instruction is deprecated"
3368         _flags="-nologo -ignore 4509"
3369         _flags_filter=armasm_flags
3370     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3371         _type=msvc
3372         _ident=$($_cc 2>&1 | head -n1)
3373         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3374         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3375         _cflags_speed="-O2"
3376         _cflags_size="-O1"
3377         _cflags_noopt="-O1"
3378         if $_cc -nologo- 2>&1 | grep -q Linker; then
3379             _ld_o='-out:$@'
3380         else
3381             _ld_o='-Fe$@'
3382         fi
3383         _cc_o='-Fo$@'
3384         _cc_e='-P -Fi$@'
3385         _flags_filter=msvc_flags
3386         _ld_lib='lib%.a'
3387         _ld_path='-libpath:'
3388         _flags='-nologo'
3389     elif $_cc 2>&1 | grep -q Intel; then
3390         _type=icl
3391         _ident=$($_cc 2>&1 | head -n1)
3392         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3393         # Not only is O3 broken on 13.x+ but it is slower on all previous
3394         # versions (tested) as well.
3395         _cflags_speed="-O2"
3396         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3397         if $_cc 2>&1 | grep -q Linker; then
3398             _ld_o='-out:$@'
3399         else
3400             _ld_o='-Fe$@'
3401         fi
3402         _cc_o='-Fo$@'
3403         _cc_e='-P'
3404         _flags_filter=icl_flags
3405         _ld_lib='lib%.a'
3406         _ld_path='-libpath:'
3407         # -Qdiag-error to make icl error when seeing certain unknown arguments
3408         _flags='-nologo -Qdiag-error:4044,10157'
3409         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3410         # with MSVC which enables it by default.
3411         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3412     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3413         # lld can emulate multiple different linkers; in ms link.exe mode,
3414         # the -? parameter gives the help output which contains an identifyable
3415         # string, while it gives an error in other modes.
3416         _type=lld-link
3417         # The link.exe mode doesn't have a switch for getting the version,
3418         # but we can force it back to gnu mode and get the version from there.
3419         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3420         _ld_o='-out:$@'
3421         _flags_filter=msvc_flags
3422         _ld_lib='lib%.a'
3423         _ld_path='-libpath:'
3424     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3425         _type=cparser
3426         _ident=$($_cc --version | head -n1)
3427         _depflags='-MMD'
3428         _cflags_speed='-O4'
3429         _cflags_size='-O2'
3430         _flags_filter=cparser_flags
3431     fi
3432
3433     eval ${pfx}_type=\$_type
3434     eval ${pfx}_ident=\$_ident
3435 }
3436
3437 set_ccvars(){
3438     eval ${1}_C=\${_cc_c-\${${1}_C}}
3439     eval ${1}_E=\${_cc_e-\${${1}_E}}
3440     eval ${1}_O=\${_cc_o-\${${1}_O}}
3441
3442     if [ -n "$_depflags" ]; then
3443         eval ${1}_DEPFLAGS=\$_depflags
3444     else
3445         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3446         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3447         eval DEP${1}FLAGS=\$_flags
3448     fi
3449 }
3450
3451 probe_cc cc "$cc"
3452 cflags_filter=$_flags_filter
3453 cflags_speed=$_cflags_speed
3454 cflags_size=$_cflags_size
3455 cflags_noopt=$_cflags_noopt
3456 add_cflags $_flags $_cflags
3457 cc_ldflags=$_ldflags
3458 set_ccvars CC
3459
3460 probe_cc hostcc "$host_cc"
3461 host_cflags_filter=$_flags_filter
3462 host_cflags_speed=$_cflags_speed
3463 add_host_cflags  $_flags $_cflags
3464 set_ccvars HOSTCC
3465
3466 test -n "$cc_type" && enable $cc_type ||
3467     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3468
3469 : ${as_default:=$cc}
3470 : ${objcc_default:=$cc}
3471 : ${dep_cc_default:=$cc}
3472 : ${ld_default:=$cc}
3473 : ${host_ld_default:=$host_cc}
3474 set_default ar as objcc dep_cc ld host_ld
3475
3476 probe_cc as "$as"
3477 asflags_filter=$_flags_filter
3478 add_asflags $_flags $_cflags
3479 set_ccvars AS
3480
3481 probe_cc objcc "$objcc"
3482 objcflags_filter=$_flags_filter
3483 add_objcflags $_flags $_cflags
3484 set_ccvars OBJC
3485
3486 probe_cc ld "$ld"
3487 ldflags_filter=$_flags_filter
3488 add_ldflags $_flags $_ldflags
3489 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3490 LD_O=${_ld_o-$LD_O}
3491 LD_LIB=${_ld_lib-$LD_LIB}
3492 LD_PATH=${_ld_path-$LD_PATH}
3493
3494 probe_cc hostld "$host_ld"
3495 host_ldflags_filter=$_flags_filter
3496 add_host_ldflags $_flags $_ldflags
3497 HOSTLD_O=${_ld_o-$HOSTLD_O}
3498
3499 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3500     probe_cc depcc "$dep_cc"
3501     CCDEP=${_DEPCMD:-$DEPCMD}
3502     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3503     DEPCCFLAGS=$_flags
3504 fi
3505
3506 if $ar 2>&1 | grep -q Microsoft; then
3507     arflags="-nologo"
3508     ar_o='-out:$@'
3509 else
3510     arflags="rc"
3511     ar_o='$@'
3512 fi
3513
3514 add_cflags $extra_cflags
3515 add_objcflags $extra_objcflags
3516 add_asflags $extra_cflags
3517
3518 if test -n "$sysroot"; then
3519     case "$cc_type" in
3520         gcc|llvm_gcc|clang)
3521             add_cppflags --sysroot="$sysroot"
3522             add_ldflags --sysroot="$sysroot"
3523         ;;
3524     esac
3525 fi
3526
3527 if test "$cpu" = host; then
3528     enabled cross_compile &&
3529         die "--cpu=host makes no sense when cross-compiling."
3530
3531     case "$cc_type" in
3532         gcc|llvm_gcc)
3533             check_native(){
3534                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3535                 sed -n "/cc1.*$1=/{
3536                             s/.*$1=\\([^ ]*\\).*/\\1/
3537                             p
3538                             q
3539                         }" $TMPE
3540             }
3541             cpu=$(check_native -march || check_native -mcpu)
3542         ;;
3543     esac
3544
3545     test "${cpu:-host}" = host &&
3546         die "--cpu=host not supported with compiler $cc"
3547 fi
3548
3549 # Deal with common $arch aliases
3550 case "$arch" in
3551     aarch64|arm64)
3552         arch="aarch64"
3553     ;;
3554     arm*)
3555         arch="arm"
3556     ;;
3557     mips*|IP*)
3558         case "$arch" in
3559         *el)
3560             add_cppflags -EL
3561             add_ldflags -EL
3562         ;;
3563         *eb)
3564             add_cppflags -EB
3565             add_ldflags -EB
3566         ;;
3567         esac
3568         arch="mips"
3569     ;;
3570     parisc*|hppa*)
3571         arch="parisc"
3572     ;;
3573     "Power Macintosh"|ppc*|powerpc*)
3574         arch="ppc"
3575     ;;
3576     s390|s390x)
3577         arch="s390"
3578     ;;
3579     sh4|sh)
3580         arch="sh4"
3581     ;;
3582     sun4u|sparc*)
3583         arch="sparc"
3584     ;;
3585     tilegx|tile-gx)
3586         arch="tilegx"
3587     ;;
3588     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3589         arch="x86"
3590     ;;
3591 esac
3592
3593 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3594 enable $arch
3595
3596 # Add processor-specific flags
3597 if enabled aarch64; then
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605         ;;
3606     esac
3607
3608 elif enabled alpha; then
3609
3610     cpuflags="-mcpu=$cpu"
3611
3612 elif enabled arm; then
3613
3614     check_arm_arch() {
3615         test_cpp_condition stddef.h \
3616             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3617             $cpuflags
3618     }
3619
3620     probe_arm_arch() {
3621         if   check_arm_arch 4;        then echo armv4
3622         elif check_arm_arch 4T;       then echo armv4t
3623         elif check_arm_arch 5;        then echo armv5
3624         elif check_arm_arch 5E;       then echo armv5e
3625         elif check_arm_arch 5T;       then echo armv5t
3626         elif check_arm_arch 5TE;      then echo armv5te
3627         elif check_arm_arch 5TEJ;     then echo armv5te
3628         elif check_arm_arch 6;        then echo armv6
3629         elif check_arm_arch 6J;       then echo armv6j
3630         elif check_arm_arch 6K;       then echo armv6k
3631         elif check_arm_arch 6Z;       then echo armv6z
3632         elif check_arm_arch 6ZK;      then echo armv6zk
3633         elif check_arm_arch 6T2;      then echo armv6t2
3634         elif check_arm_arch 7;        then echo armv7
3635         elif check_arm_arch 7A  7_A;  then echo armv7-a
3636         elif check_arm_arch 7S;       then echo armv7-a
3637         elif check_arm_arch 7R  7_R;  then echo armv7-r
3638         elif check_arm_arch 7M  7_M;  then echo armv7-m
3639         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3640         elif check_arm_arch 8A  8_A;  then echo armv8-a
3641         fi
3642     }
3643
3644     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3645
3646     case $cpu in
3647         armv*)
3648             cpuflags="-march=$cpu"
3649             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3650         ;;
3651         *)
3652             cpuflags="-mcpu=$cpu"
3653             case $cpu in
3654                 cortex-a*)                               subarch=armv7a  ;;
3655                 cortex-r*)                               subarch=armv7r  ;;
3656                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3657                 arm11*)                                  subarch=armv6   ;;
3658                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3659                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3660                 *)                             subarch=$(probe_arm_arch) ;;
3661             esac
3662         ;;
3663     esac
3664
3665     case "$subarch" in
3666         armv5t*)    enable fast_clz                ;;
3667         armv[6-8]*) enable fast_clz fast_unaligned ;;
3668     esac
3669
3670 elif enabled avr32; then
3671
3672     case $cpu in
3673         ap7[02]0[0-2])
3674             subarch="avr32_ap"
3675             cpuflags="-mpart=$cpu"
3676         ;;
3677         ap)
3678             subarch="avr32_ap"
3679             cpuflags="-march=$cpu"
3680         ;;
3681         uc3[ab]*)
3682             subarch="avr32_uc"
3683             cpuflags="-mcpu=$cpu"
3684         ;;
3685         uc)
3686             subarch="avr32_uc"
3687             cpuflags="-march=$cpu"
3688         ;;
3689     esac
3690
3691 elif enabled bfin; then
3692
3693     cpuflags="-mcpu=$cpu"
3694
3695 elif enabled mips; then
3696
3697     cpuflags="-march=$cpu"
3698
3699 elif enabled ppc; then
3700
3701     disable ldbrx
3702
3703     case $(tolower $cpu) in
3704         601|ppc601|powerpc601)
3705             cpuflags="-mcpu=601"
3706             disable altivec
3707         ;;
3708         603*|ppc603*|powerpc603*)
3709             cpuflags="-mcpu=603"
3710             disable altivec
3711         ;;
3712         604*|ppc604*|powerpc604*)
3713             cpuflags="-mcpu=604"
3714             disable altivec
3715         ;;
3716         g3|75*|ppc75*|powerpc75*)
3717             cpuflags="-mcpu=750"
3718             disable altivec
3719         ;;
3720         g4|745*|ppc745*|powerpc745*)
3721             cpuflags="-mcpu=7450"
3722             disable vsx
3723         ;;
3724         74*|ppc74*|powerpc74*)
3725             cpuflags="-mcpu=7400"
3726             disable vsx
3727         ;;
3728         g5|970|ppc970|powerpc970)
3729             cpuflags="-mcpu=970"
3730             disable vsx
3731         ;;
3732         power[3-6]*)
3733             cpuflags="-mcpu=$cpu"
3734             disable vsx
3735         ;;
3736         power[7-8]*)
3737             cpuflags="-mcpu=$cpu"
3738             enable ldbrx
3739         ;;
3740         cell)
3741             cpuflags="-mcpu=cell"
3742             enable ldbrx
3743             disable vsx
3744         ;;
3745         e500mc)
3746             cpuflags="-mcpu=e500mc"
3747             disable altivec
3748         ;;
3749         e500v2)
3750             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3751             disable altivec
3752             disable dcbzl
3753         ;;
3754         e500)
3755             cpuflags="-mcpu=8540 -mhard-float"
3756             disable altivec
3757             disable dcbzl
3758         ;;
3759     esac
3760
3761 elif enabled sparc; then
3762
3763     case $cpu in
3764         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3765             cpuflags="-mcpu=$cpu"
3766         ;;
3767         ultrasparc*|niagara[234])
3768             cpuflags="-mcpu=$cpu"
3769         ;;
3770     esac
3771
3772 elif enabled x86; then
3773
3774     case $cpu in
3775         i[345]86|pentium)
3776             cpuflags="-march=$cpu"
3777             disable i686
3778             disable mmx
3779         ;;
3780         # targets that do NOT support nopl and conditional mov (cmov)
3781         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3782             cpuflags="-march=$cpu"
3783             disable i686
3784         ;;
3785         # targets that do support nopl and conditional mov (cmov)
3786         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3787             cpuflags="-march=$cpu"
3788             enable i686
3789             enable fast_cmov
3790         ;;
3791         # targets that do support conditional mov but on which it's slow
3792         pentium4|pentium4m|prescott|nocona)
3793             cpuflags="-march=$cpu"
3794             enable i686
3795             disable fast_cmov
3796         ;;
3797     esac
3798
3799 fi
3800
3801 if [ "$cpu" != generic ]; then
3802     add_cflags  $cpuflags
3803     add_asflags $cpuflags
3804     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3805 fi
3806
3807 # compiler sanity check
3808 test_exec <<EOF
3809 int main(void){ return 0; }
3810 EOF
3811 if test "$?" != 0; then
3812     echo "$cc is unable to create an executable file."
3813     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3814         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3815         echo "Only do this if you know what cross compiling means."
3816     fi
3817     die "C compiler test failed."
3818 fi
3819
3820 add_cppflags -D_ISOC99_SOURCE
3821
3822 # some compilers silently accept -std=c11, so we also need to check that the
3823 # version macro is defined properly
3824 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3825     add_cflags -std=c11 ||
3826     check_cflags -std=c99
3827
3828 check_cppflags -D_FILE_OFFSET_BITS=64
3829 check_cppflags -D_LARGEFILE_SOURCE
3830
3831 add_host_cppflags -D_ISOC99_SOURCE
3832 check_host_cflags -std=c99
3833 check_host_cflags -Wall
3834 check_host_cflags $host_cflags_speed
3835
3836 check_64bit(){
3837     arch32=$1
3838     arch64=$2
3839     expr=${3:-'sizeof(void *) > 4'}
3840     test_code cc "" "int test[2*($expr) - 1]" &&
3841         subarch=$arch64 || subarch=$arch32
3842     enable $subarch
3843 }
3844
3845 case "$arch" in
3846     aarch64|alpha|ia64)
3847         enabled shared && enable_weak pic
3848     ;;
3849     mips)
3850         check_64bit mips mips64 '_MIPS_SIM > 1'
3851         enabled shared && enable_weak pic
3852     ;;
3853     parisc)
3854         check_64bit parisc parisc64
3855         enabled shared && enable_weak pic
3856     ;;
3857     ppc)
3858         check_64bit ppc ppc64
3859         enabled shared && enable_weak pic
3860     ;;
3861     s390)
3862         check_64bit s390 s390x
3863         enabled shared && enable_weak pic
3864     ;;
3865     sparc)
3866         check_64bit sparc sparc64
3867         enabled shared && enable_weak pic
3868     ;;
3869     x86)
3870         check_64bit x86_32 x86_64
3871         if enabled x86_64; then
3872             enabled shared && enable_weak pic
3873             objformat=elf64
3874         fi
3875     ;;
3876 esac
3877
3878 # OS specific
3879 case $target_os in
3880     aix)
3881         SHFLAGS=-shared
3882         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3883         enabled shared && add_ldflags -Wl,-brtl
3884         arflags='-Xany -r -c'
3885         ;;
3886     android)
3887         disable symver
3888         enable section_data_rel_ro
3889         SLIB_INSTALL_NAME='$(SLIBNAME)'
3890         SLIB_INSTALL_LINKS=
3891         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3892         ;;
3893     haiku)
3894         prefix_default="/boot/common"
3895         network_extralibs="-lnetwork"
3896         host_extralibs=
3897         ;;
3898     sunos)
3899         SHFLAGS='-shared -Wl,-h,$$(@F)'
3900         enabled x86 && append SHFLAGS -mimpure-text
3901         network_extralibs="-lsocket -lnsl"
3902         # When using suncc to build, the Solaris linker will mark
3903         # an executable with each instruction set encountered by
3904         # the Solaris assembler.  As our libraries contain their own
3905         # guards for processor-specific code, instead suppress
3906         # generation of the HWCAPS ELF section on Solaris x86 only.
3907         enabled_all suncc x86 &&
3908             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3909             add_ldflags -Wl,-M,mapfile
3910         nm_default='nm -P -g'
3911         version_script='-M'
3912         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3913         ;;
3914     netbsd)
3915         disable symver
3916         oss_indev_extralibs="-lossaudio"
3917         ;;
3918     openbsd|bitrig)
3919         disable symver
3920         SHFLAGS='-shared'
3921         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3922         SLIB_INSTALL_LINKS=
3923         oss_indev_extralibs="-lossaudio"
3924         ;;
3925     dragonfly)
3926         disable symver
3927         ;;
3928     freebsd)
3929         ;;
3930     bsd/os)
3931         add_extralibs -lpoll -lgnugetopt
3932         ;;
3933     darwin)
3934         enabled ppc && add_asflags -force_cpusubtype_ALL
3935         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3936         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3937         add_ldflags -Wl,-dynamic,-search_paths_first
3938         check_cflags -Werror=partial-availability
3939         SLIBSUF=".dylib"
3940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3942         enabled x86_64 && objformat="macho64" || objformat="macho32"
3943         enabled_any pic shared ||
3944             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3945         check_headers dispatch/dispatch.h &&
3946             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3947         if test -n "$sysroot"; then
3948             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3949             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3950         fi
3951         ;;
3952     msys*)
3953         die "Native MSYS builds are discouraged, please use the MINGW environment."
3954         ;;
3955     mingw32*|mingw64*)
3956         target_os=mingw32
3957         LIBTARGET=i386
3958         if enabled x86_64; then
3959             LIBTARGET="i386:x86-64"
3960         elif enabled arm; then
3961             LIBTARGET="arm"
3962         elif enabled aarch64; then
3963             LIBTARGET="arm64"
3964         fi
3965         if enabled shared; then
3966             # Cannot build both shared and static libs when using dllimport.
3967             disable static
3968         fi
3969         check_ldflags -Wl,--nxcompat
3970         check_ldflags -Wl,--dynamicbase
3971         shlibdir_default="$bindir_default"
3972         SLIBPREF=""
3973         SLIBSUF=".dll"
3974         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3975         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3976         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3978         SLIB_INSTALL_LINKS=
3979         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3980         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3981         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3982         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3983         enabled x86_64 && objformat="win64" || objformat="win32"
3984         dlltool="${cross_prefix}dlltool"
3985         ranlib=:
3986         enable dos_paths
3987         ;;
3988     win32|win64)
3989         disable symver
3990         if enabled shared; then
3991             # Link to the import library instead of the normal static library
3992             # for shared libs.
3993             LD_LIB='%.lib'
3994             # Cannot build both shared and static libs with MSVC or icl.
3995             disable static
3996         fi
3997         shlibdir_default="$bindir_default"
3998         SLIBPREF=""
3999         SLIBSUF=".dll"
4000         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4001         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4002         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4003         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4004         SLIB_INSTALL_LINKS=
4005         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4006         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4007         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4008         enabled x86_64 && objformat="win64" || objformat="win32"
4009         ranlib=:
4010         enable dos_paths
4011         ;;
4012     cygwin*)
4013         target_os=cygwin
4014         shlibdir_default="$bindir_default"
4015         SLIBPREF="cyg"
4016         SLIBSUF=".dll"
4017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4020         SLIB_INSTALL_LINKS=
4021         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4022         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4023         enabled x86_64 && objformat="win64" || objformat="win32"
4024         enable dos_paths
4025         ;;
4026     *-dos|freedos|opendos)
4027         network_extralibs="-lsocket"
4028         objformat="coff"
4029         enable dos_paths
4030         add_cppflags -U__STRICT_ANSI__
4031         ;;
4032     linux)
4033         enable section_data_rel_ro
4034         ;;
4035     irix*)
4036         target_os=irix
4037         ranlib="echo ignoring ranlib"
4038         ;;
4039     os/2*)
4040         ln_s="cp -f"
4041         objformat="aout"
4042         add_cppflags -D_GNU_SOURCE
4043         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4044         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4045         LIBSUF="_s.a"
4046         SLIBPREF=""
4047         SLIBSUF=".dll"
4048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4050         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4051             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4052             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4053             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4054             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4055         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4056             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4057         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4058         enable dos_paths
4059         ;;
4060     gnu/kfreebsd)
4061         add_cppflags -D_BSD_SOURCE
4062         ;;
4063     gnu)
4064         ;;
4065     qnx)
4066         add_cppflags -D_QNX_SOURCE
4067         network_extralibs="-lsocket"
4068         ;;
4069     symbian)
4070         SLIBSUF=".dll"
4071         enable dos_paths
4072         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4073         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4074         add_ldflags -Wl,--target1-abs,--no-undefined \
4075                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4076                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4077         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4078                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4079                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4080         ;;
4081     minix)
4082         ;;
4083     none)
4084         ;;
4085     *)
4086         die "Unknown OS '$target_os'."
4087         ;;
4088 esac
4089
4090 # determine libc flavour
4091
4092 probe_libc(){
4093     pfx=$1
4094     pfx_no_=${pfx%_}
4095     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4096     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4097         eval ${pfx}libc_type=uclibc
4098         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4099     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4100         eval ${pfx}libc_type=glibc
4101         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4102     # MinGW headers can be installed on Cygwin, so check for newlib first.
4103     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4104         eval ${pfx}libc_type=newlib
4105         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4106         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4107             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4108     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4109     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4110         eval ${pfx}libc_type=mingw64
4111         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4112         eval test \$${pfx_no_}cc_type = "gcc" &&
4113             add_${pfx}cppflags -D__printf__=__gnu_printf__
4114         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4115             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4116     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4117          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4118         eval ${pfx}libc_type=mingw32
4119         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4120             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4121             die "ERROR: MinGW32 runtime version must be >= 3.15."
4122         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4123         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4124             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4125         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4126             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4127         eval test \$${pfx_no_}cc_type = "gcc" &&
4128             add_${pfx}cppflags -D__printf__=__gnu_printf__
4129     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4130         eval ${pfx}libc_type=msvcrt
4131         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4132             if [ "$pfx" = host_ ]; then
4133                 add_host_cppflags -Dsnprintf=_snprintf
4134             else
4135                 add_compat strtod.o strtod=avpriv_strtod
4136                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4137                                              _snprintf=avpriv_snprintf  \
4138                                              vsnprintf=avpriv_vsnprintf
4139             fi
4140         fi
4141         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4142         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4143         # 0x601 by default unless something else is set by the user.
4144         # This can easily lead to us detecting functions only present
4145         # in such new versions and producing binaries requiring windows 7.0.
4146         # Therefore explicitly set the default to Vista unless the user has
4147         # set something else on the command line.
4148         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4149         # family. For these cases, configure is free to use any functions
4150         # found in the SDK headers by default. (Alternatively, we could force
4151         # _WIN32_WINNT to 0x0602 in that case.)
4152         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4153             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
4154 #ifdef WINAPI_FAMILY
4155 #include <winapifamily.h>
4156 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4157 #error not desktop
4158 #endif
4159 #endif
4160 EOF
4161         if [ "$pfx" = "" ]; then
4162             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4163         fi
4164     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4165         eval ${pfx}libc_type=klibc
4166     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4167         eval ${pfx}libc_type=bionic
4168     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4169         eval ${pfx}libc_type=solaris
4170         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4171     else
4172         eval ${pfx}libc_type=default
4173         add_${pfx}cppflags -D_DEFAULT_SOURCE
4174     fi
4175     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4176 }
4177
4178 probe_libc
4179 probe_libc host_
4180
4181 # hacks for compiler/libc/os combinations
4182
4183 case $libc_type in
4184     bionic)
4185         add_compat strtod.o strtod=avpriv_strtod
4186         ;;
4187 esac
4188
4189 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4190     add_cppflags '-I\$(SRC_PATH)/compat/float'
4191
4192 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4193
4194 set_default $PATHS_LIST
4195 set_default nm
4196
4197 disabled optimizations || check_cflags -fomit-frame-pointer
4198
4199 enable_weak_pic() {
4200     disabled pic && return
4201     enable pic
4202     add_cppflags -DPIC
4203     case "$target_os" in
4204     mingw*|cygwin*|win*)
4205         ;;
4206     *)
4207         add_cflags -fPIC
4208         add_asflags -fPIC
4209         ;;
4210     esac
4211 }
4212
4213 enabled pic && enable_weak_pic
4214
4215 test_cc <<EOF || die "Symbol mangling check failed."
4216 int ff_extern;
4217 EOF
4218 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4219 extern_prefix=${sym%%ff_extern*}
4220
4221 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4222
4223 for restrict_keyword in restrict __restrict__ __restrict ""; do
4224     test_code cc "" "char * $restrict_keyword p" && break
4225 done
4226
4227 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
4228
4229 # The global variable ensures the bits appear unchanged in the object file.
4230 test_cc <<EOF || die "endian test failed"
4231 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4232 EOF
4233 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4234
4235 check_gas() {
4236     log "check_gas using '$as' as AS"
4237     # :vararg is used on aarch64, arm and ppc altivec
4238     check_as vararg "
4239 .macro m n, y:vararg=0
4240 \n: .int \y
4241 .endm
4242 m x" || return 1
4243     # .altmacro is only used in arm asm
4244     ! enabled arm || check_as gnu_as ".altmacro"
4245 }
4246
4247 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4248     nogas=:
4249     enabled_any arm aarch64 && nogas=die
4250     enabled_all ppc altivec && nogas=warn
4251     as_noop=-v
4252
4253     case $as_type in
4254         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4255         gcc)  gaspp_as_type=gas ;;
4256         *)    gaspp_as_type=$as_type ;;
4257     esac
4258
4259     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4260
4261     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4262         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4263
4264     if ! check_gas ; then
4265         as=${gas:=$as}
4266         check_gas || \
4267             $nogas "GNU assembler not found, install/update gas-preprocessor"
4268     fi
4269
4270     check_as as_func ".func test
4271                       .endfunc"
4272 fi
4273
4274 check_inline_asm inline_asm_labels '"1:\n"'
4275
4276 if enabled aarch64; then
4277     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4278     # internal assembler in clang 3.3 does not support this instruction
4279     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4280     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4281
4282     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4283
4284 elif enabled alpha; then
4285
4286     check_cflags -mieee
4287
4288 elif enabled arm; then
4289
4290     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
4291     test_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4292     enabled thumb && check_cflags -mthumb || check_cflags -marm
4293
4294     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
4295         :
4296     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4297         :
4298     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4299         case "${cross_prefix:-$cc}" in
4300             *hardfloat*) enable vfp_args; fpabi=vfp ;;
4301             *) check_ld vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
4302 __asm__ (".eabi_attribute 28, 1");
4303 int main(void) { return 0; }
4304 EOF
4305         esac
4306         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4307     fi
4308
4309     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4310     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4311     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4312     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4313     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4314     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4315
4316     [ $target_os = linux ] || [ $target_os = android ] ||
4317         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4318             $ARCH_EXT_LIST_ARM
4319
4320     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4321
4322     check_as as_arch_directive ".arch armv7-a"
4323     check_as as_fpu_directive  ".fpu neon"
4324
4325     # llvm's integrated assembler supports .object_arch from llvm 3.5
4326     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4327         check_as as_object_arch ".object_arch armv4"
4328
4329     # MS armasm fails to assemble our PIC constructs
4330     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4331
4332 elif enabled mips; then
4333
4334     # make sure that only one instruction set is enabled
4335     disable $ARCH_EXT_LIST_MIPS
4336
4337     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4338
4339     if enabled mips64; then
4340         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4341             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4342                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4343     else
4344         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4345             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4346                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4347     fi
4348
4349 elif enabled parisc; then
4350
4351     if enabled gcc; then
4352         case $($cc -dumpversion) in
4353             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4354         esac
4355     fi
4356
4357 elif enabled ppc; then
4358
4359     enable local_aligned_8 local_aligned_16 local_aligned_32
4360
4361     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4362     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4363     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4364     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4365
4366     if enabled altivec; then
4367         check_cflags -maltivec -mabi=altivec
4368
4369         # check if our compiler supports Motorola AltiVec C API
4370         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
4371                                     vector signed int v2 = (vector signed int) { 1 };
4372                                     v1 = vec_add(v1, v2);"
4373
4374         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4375     fi
4376
4377     if enabled vsx; then
4378         check_cflags -mvsx &&
4379         check_cc vsx altivec.h "int v[4] = { 0 };
4380                                 vector signed int v1 = vec_vsx_ld(0, v);"
4381     fi
4382
4383     if enabled power8; then
4384         check_cpp_condition power8 altivec.h "defined(_ARCH_PWR8)"
4385     fi
4386
4387 elif enabled x86; then
4388
4389     check_builtin rdtsc    intrin.h   "__rdtsc()"
4390     check_builtin mm_empty mmintrin.h "_mm_empty()"
4391
4392     enable local_aligned_8 local_aligned_16 local_aligned_32
4393
4394     # check whether EBP is available on x86
4395     # As 'i' is stored on the stack, this program will crash
4396     # if the base pointer is used to access it because the
4397     # base pointer is cleared in the inline assembly code.
4398     check_exec_crash <<EOF && enable ebp_available
4399 volatile int i=0;
4400 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4401 return i;
4402 EOF
4403
4404     # check whether EBX is available on x86
4405     check_inline_asm ebx_available '""::"b"(0)' &&
4406         check_inline_asm ebx_available '"":::"%ebx"'
4407
4408     # check whether xmm clobbers are supported
4409     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4410
4411     # check whether binutils is new enough to compile SSSE3/MMXEXT
4412     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4413     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4414
4415     probe_x86asm(){
4416         x86asmexe_probe=$1
4417         if test_cmd $x86asmexe_probe -v; then
4418             x86asmexe=$x86asmexe_probe
4419             x86asm_type=nasm
4420             x86asm_debug="-g -F dwarf"
4421             X86ASMDEP=
4422             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4423         elif test_cmd $x86asmexe_probe --version; then
4424             x86asmexe=$x86asmexe_probe
4425             x86asm_type=yasm
4426             x86asm_debug="-g dwarf2"
4427             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4428             X86ASM_DEPFLAGS=
4429         fi
4430         check_x86asm x86asm "movbe ecx, [5]"
4431     }
4432
4433     if ! disabled_any asm mmx x86asm; then
4434         disable x86asm
4435         for program in $x86asmexe nasm yasm; do
4436             probe_x86asm $program && break
4437         done
4438         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4439         X86ASMFLAGS="-f $objformat"
4440         enabled pic               && append X86ASMFLAGS "-DPIC"
4441         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4442         case "$objformat" in
4443             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4444         esac
4445
4446         check_x86asm avx2_external "vextracti128 xmm0, ymm0, 0"
4447         check_x86asm  xop_external "vpmacsdd xmm0, xmm1, xmm2, xmm3"
4448         check_x86asm fma3_external "vfmadd132ps ymm0, ymm1, ymm2"
4449         check_x86asm fma4_external "vfmaddps ymm0, ymm1, ymm2, ymm3"
4450         check_x86asm cpunop        "CPU amdnop"
4451     fi
4452
4453     case "$cpu" in
4454         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4455             disable fast_clz
4456         ;;
4457     esac
4458
4459 fi
4460
4461 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
4462
4463 check_ldflags -Wl,--as-needed
4464
4465 if ! disabled network; then
4466     check_func getaddrinfo $network_extralibs
4467     check_func inet_aton $network_extralibs
4468
4469     check_type netdb.h "struct addrinfo"
4470     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4471     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4472     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4473     check_type poll.h "struct pollfd"
4474     check_type netinet/sctp.h "struct sctp_event_subscribe"
4475     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4476     check_type netinet/in.h "struct sockaddr_in6"
4477     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4478     check_type "sys/types.h sys/socket.h" socklen_t
4479
4480     # Prefer arpa/inet.h over winsock2
4481     if check_headers arpa/inet.h ; then
4482         check_func closesocket
4483     elif check_headers winsock2.h ; then
4484         check_func_headers winsock2.h closesocket -lws2 &&
4485             network_extralibs="-lws2" ||
4486         { check_func_headers winsock2.h closesocket -lws2_32 &&
4487             network_extralibs="-lws2_32"; } || disable winsock2_h network
4488         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4489
4490         check_type ws2tcpip.h socklen_t
4491         check_type ws2tcpip.h "struct addrinfo"
4492         check_type ws2tcpip.h "struct group_source_req"
4493         check_type ws2tcpip.h "struct ip_mreq_source"
4494         check_type ws2tcpip.h "struct ipv6_mreq"
4495         check_type winsock2.h "struct pollfd"
4496         check_struct winsock2.h "struct sockaddr" sa_len
4497         check_type ws2tcpip.h "struct sockaddr_in6"
4498         check_type ws2tcpip.h "struct sockaddr_storage"
4499     else
4500         disable network
4501     fi
4502 fi
4503
4504 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4505 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4506 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4507 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4508
4509 case "$custom_allocator" in
4510     jemalloc)
4511         # jemalloc by default does not use a prefix
4512         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4513     ;;
4514     tcmalloc)
4515         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4516         malloc_prefix=tc_
4517     ;;
4518 esac
4519
4520 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4521 check_func  ${malloc_prefix}memalign            && enable memalign
4522 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4523
4524 test_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4525     { check_lib clock_gettime time.h clock_gettime ||
4526       check_lib clock_gettime time.h clock_gettime -lrt; }
4527
4528 check_func  fcntl
4529 check_func  gethrtime
4530 check_func  getopt
4531 check_func  getrusage
4532 check_func  gettimeofday
4533 check_func  gmtime_r
4534 check_func  isatty
4535 check_func  localtime_r
4536 check_func  mkstemp
4537 check_func  mmap
4538 check_func  mprotect
4539 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4540 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4541 check_func  sched_getaffinity
4542 check_func  setrlimit
4543 check_func  strerror_r
4544 check_func  sysconf
4545 check_func  sysctl
4546 check_func  usleep
4547
4548 check_func_headers io.h setmode
4549 check_func_headers mach/mach_time.h mach_absolute_time
4550 check_func_headers stdlib.h getenv
4551
4552 check_func_headers windows.h GetProcessAffinityMask
4553 check_func_headers windows.h GetProcessTimes
4554 check_func_headers windows.h GetSystemTimeAsFileTime
4555 check_func_headers windows.h LoadLibrary
4556 check_func_headers windows.h MapViewOfFile
4557 check_func_headers windows.h SetConsoleTextAttribute
4558 check_func_headers windows.h Sleep
4559 check_func_headers windows.h VirtualAlloc
4560
4561 check_headers direct.h
4562 check_headers dxgidebug.h
4563 check_headers dxva.h
4564 check_headers dxva2api.h
4565 check_headers io.h
4566 check_headers malloc.h
4567 check_headers poll.h
4568 check_headers sys/param.h
4569 check_headers sys/resource.h
4570 check_headers sys/select.h
4571 check_headers sys/time.h
4572 check_headers sys/un.h
4573 check_headers unistd.h
4574 check_headers valgrind/valgrind.h
4575 check_headers VideoDecodeAcceleration/VDADecoder.h
4576 check_headers windows.h
4577
4578 # it seems there are versions of clang in some distros that try to use the
4579 # gcc headers, which explodes for stdatomic
4580 # so we also check that atomics actually work here
4581 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4582
4583 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
4584     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
4585 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4586 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4587 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4588
4589 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4590
4591 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4592 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4593 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4594
4595 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4596 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4597 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4598
4599 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4600 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4601 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4602 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4603 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4604 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4605 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4606 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4607 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4608
4609 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4610
4611 if ! disabled w32threads && ! enabled pthreads; then
4612     check_lib w32threads "windows.h process.h" _beginthreadex &&
4613         check_type "windows.h" CONDITION_VARIABLE
4614 fi
4615
4616 # check for some common methods of building with pthread support
4617 # do this before the optional library checks as some of them require pthreads
4618 if ! disabled pthreads && ! enabled w32threads; then
4619     if check_lib pthreads pthread.h pthread_join -pthread; then
4620         add_cflags -pthread
4621     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4622         add_cflags -pthreads
4623     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4624         :
4625     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4626         :
4627     elif check_func pthread_join; then
4628         enable pthreads
4629     fi
4630     enabled pthreads &&
4631         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4632 fi
4633
4634 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4635 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4636
4637 # On some systems dynamic loading requires no extra linker flags
4638 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4639
4640 check_lib libm math.h sin -lm
4641
4642 atan2f_args=2
4643 ldexpf_args=2
4644 powf_args=2
4645
4646 for func in $MATH_FUNCS; do
4647     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4648 done
4649
4650 # these are off by default, so fail if requested and not available
4651 enabled amf               && require_cpp_condition amf AMF/core/Version.h "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
4652 enabled avisynth          && require_headers avisynth/avisynth_c.h
4653 enabled avxsynth          && require_headers avxsynth/avxsynth_c.h
4654 enabled cuda              && require cuda cuda.h cuInit -lcuda
4655 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4656 enabled frei0r            && require_headers frei0r.h
4657 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4658                              check_lib gmp gmp.h mpz_export -lgmp
4659 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
4660 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4661 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4662 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4663 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4664 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4665 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4666 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4667 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4668 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4669 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4670 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4671 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4672 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4673 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4674 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4675 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4676 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4677 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4678 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4679                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4680 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4681 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4682 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4683 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4684 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4685 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4686 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
4687 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4688 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4689 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4690 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4691 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4692 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4693                              { enabled libvpx_vp8_decoder &&
4694                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4695                                enabled libvpx_vp8_encoder &&
4696                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4697                                enabled libvpx_vp9_decoder &&
4698                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4699                                enabled libvpx_vp9_encoder &&
4700                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4701                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4702                                    die "libvpx enabled but no supported decoders/encoders found"
4703                              }
4704 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4705 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4706 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4707                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
4708                              check_cpp_condition libx262 x264.h "X264_MPEG2"
4709 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4710                              require_cpp_condition libx265 x265.h "X265_BUILD >= 57"
4711 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4712 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4713 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4714                                { ! enabled cross_compile &&
4715                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4716                                  add_ldflags -L/opt/vc/lib/ &&
4717                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4718                                die "ERROR: mmal not found" &&
4719                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4720 enabled nvenc             && require_cpp_condition nvenc nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4721 enabled omx               && require_headers OMX_Core.h
4722 enabled omx_rpi           && { check_headers OMX_Core.h ||
4723                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
4724                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4725 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4726                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4727                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4728                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4729                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4730                                die "ERROR: openssl not found"; }
4731
4732 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4733 enabled avplay &&
4734     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4735
4736 check_headers linux/fb.h
4737 check_headers linux/videodev2.h
4738 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4739
4740 check_headers AVFoundation/AVFoundation.h
4741
4742 check_headers sys/videoio.h
4743
4744 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4745 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4746 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4747 # w32api 3.12 had it defined wrong
4748 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
4749
4750 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4751 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4752     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4753     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4754     check_headers "dev/ic/bt8xx.h"
4755
4756 check_headers sys/soundcard.h
4757
4758 enabled alsa_indev &&
4759     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4760
4761 enabled libjack &&
4762     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4763
4764 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4765
4766 if enabled libcdio; then
4767     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4768     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4769     die "ERROR: No usable libcdio/cdparanoia found"
4770 fi
4771
4772 if enabled libxcb; then
4773     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4774     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4775     disabled libxcb_shm ||
4776         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4777     disabled libxcb_xfixes ||
4778         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4779 fi
4780
4781 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4782 # the desktop api partition
4783 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4784 #ifdef WINAPI_FAMILY
4785 #include <winapifamily.h>
4786 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4787 #error desktop, not uwp
4788 #else
4789 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4790 #endif
4791 #else
4792 #error no family set
4793 #endif
4794 EOF
4795
4796 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4797
4798 if enabled vaapi; then
4799      require_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
4800      check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4801      check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4802 fi
4803
4804 enabled vaapi &&
4805     test_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4806     enable vaapi_1
4807
4808 enabled vdpau &&
4809     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
4810
4811 enabled vdpau &&
4812     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4813
4814 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4815
4816 # add some useful compiler flags if supported
4817 check_cflags -Wdeclaration-after-statement
4818 check_cflags -Wall
4819 check_cflags -Wdisabled-optimization
4820 check_cflags -Wpointer-arith
4821 check_cflags -Wredundant-decls
4822 check_cflags -Wwrite-strings
4823 check_cflags -Wtype-limits
4824 check_cflags -Wundef
4825 check_cflags -Wmissing-prototypes
4826 check_cflags -Wstrict-prototypes
4827
4828 if enabled extra_warnings; then
4829     check_cflags -Wcast-qual
4830     check_cflags -Wextra
4831     check_cflags -Wpedantic
4832 fi
4833
4834 check_disable_warning(){
4835     warning_flag=-W${1#-Wno-}
4836     test_cflags $warning_flag && add_cflags $1
4837 }
4838
4839 check_disable_warning -Wno-parentheses
4840 check_disable_warning -Wno-switch
4841 check_disable_warning -Wno-format-zero-length
4842 check_disable_warning -Wno-pointer-sign
4843
4844 check_disable_warning_headers(){
4845     warning_flag=-W${1#-Wno-}
4846     test_cflags $warning_flag && add_cflags_headers $1
4847 }
4848
4849 check_disable_warning_headers -Wno-deprecated-declarations
4850 check_disable_warning_headers -Wno-unused-variable
4851
4852 check_objcflags -fobjc-arc && enable objc_arc
4853
4854 test_cc <<EOF && enable blocks_extension
4855 void (^block)(void);
4856 EOF
4857
4858 # add some linker flags
4859 check_ldflags -Wl,--warn-common
4860 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4861 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4862 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4863
4864 # add some strip flags
4865 # -wN '..@*' is more selective than -x, but not available everywhere.
4866 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4867
4868 enabled neon_clobber_test &&
4869     check_ldflags -Wl,--wrap,avcodec_open2              \
4870                   -Wl,--wrap,avcodec_decode_audio4      \
4871                   -Wl,--wrap,avcodec_decode_video2      \
4872                   -Wl,--wrap,avcodec_decode_subtitle2   \
4873                   -Wl,--wrap,avcodec_encode_audio2      \
4874                   -Wl,--wrap,avcodec_encode_video2      \
4875                   -Wl,--wrap,avcodec_encode_subtitle    \
4876                   -Wl,--wrap,avcodec_send_packet        \
4877                   -Wl,--wrap,avcodec_receive_packet     \
4878                   -Wl,--wrap,avcodec_send_frame         \
4879                   -Wl,--wrap,avcodec_receive_frame      \
4880                   -Wl,--wrap,avresample_convert ||
4881     disable neon_clobber_test
4882
4883 enabled xmm_clobber_test &&
4884     check_ldflags -Wl,--wrap,avcodec_open2              \
4885                   -Wl,--wrap,avcodec_decode_audio4      \
4886                   -Wl,--wrap,avcodec_decode_video