configure: Miscellaneous small changes to helper functions
[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-libbs2b           Bauer stereophonic-to-binaural DSP
191   --enable-libcdio           audio CD input
192   --enable-libdc1394         IEEE 1394/Firewire camera input
193   --enable-libdcadec         DCA audio decoding
194   --enable-libfaac           AAC audio encoding
195   --enable-libfdk-aac        AAC audio encoding/decoding
196   --enable-libfontconfig     font configuration and management
197   --enable-libfreetype       font rendering
198   --enable-libgsm            GSM audio encoding/decoding
199   --enable-libhdcd           HDCD decoding filter
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libjack           JACK audio sound server
202   --enable-libkvazaar        HEVC video encoding
203   --enable-libmp3lame        MP3 audio encoding
204   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
205   --enable-libopencore-amrwb AMR-WB audio decoding
206   --enable-libopencv         computer vision
207   --enable-libopenh264       H.264 video encoding/decoding
208   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
209   --enable-libopus           Opus audio encoding/decoding
210   --enable-libpulse          Pulseaudio sound server
211   --enable-librtmp           RTMP streaming
212   --enable-libschroedinger   Dirac video encoding/decoding
213   --enable-libsnappy         snappy compression
214   --enable-libspeex          Speex audio encoding/decoding
215   --enable-libtheora         Theora video encoding/decoding
216   --enable-libtwolame        MP2 audio encoding
217   --enable-libvo-aacenc      AAC audio encoding
218   --enable-libvo-amrwbenc    AMR-WB audio encoding
219   --enable-libvorbis         Vorbis audio encoding/decoding
220   --enable-libvpx            VP* video encoding/decoding
221   --enable-libwavpack        Wavpack audio encoding/decoding
222   --enable-libwebp           WebP image encoding/decoding
223   --enable-libx264           H.264 video encoding
224   --enable-libx265           HEVC video encoding
225   --enable-libxavs           Chinese AVS video encoding
226   --enable-libxcb            X window system protocol communication
227   --enable-libxcb-shm        X11 shm communication [auto]
228   --enable-libxcb-xfixes     X11 mouse rendering [auto]
229   --enable-libxvid           MPEG-4 ASP video encoding
230   --enable-openssl           crypto
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-cuda    Nvidia CUDA (dynamically linked)
235   --enable-cuvid   Nvidia CUVID video decode acceleration
236   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
237   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
238   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
239   --enable-libnpp  Nvidia CUDA processing
240   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
241   --enable-nvenc   Nvidia video encoding
242   --enable-omx     OpenMAX IL
243   --enable-omx-rpi OpenMAX IL for Raspberry Pi
244   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
245   --enable-vda     Apple Video Decode Acceleration [auto]
246   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
247
248 Toolchain options:
249   --arch=ARCH              select architecture [$arch]
250   --cpu=CPU                select the minimum required CPU (affects
251                            instruction selection, may crash on older CPUs)
252   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
253   --enable-cross-compile   assume a cross-compiler is used
254   --sysroot=PATH           root of cross-build tree
255   --sysinclude=PATH        location of cross-build system headers
256   --target-os=OS           compiler targets OS [$target_os]
257   --target-exec=CMD        command to run executables on target
258   --target-path=DIR        path to view of build directory on target
259   --target-samples=DIR     path to samples directory on target
260   --toolchain=NAME         set tool defaults according to NAME
261   --nm=NM                  use nm tool
262   --ar=AR                  use archive tool AR [$ar_default]
263   --as=AS                  use assembler AS [$as_default]
264   --cc=CC                  use C compiler CC [$cc_default]
265   --objcc=OCC              use ObjC compiler OCC [$cc_default]
266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
267   --ld=LD                  use linker LD
268   --x86asmexe=X86ASM       use x86 assembler X86ASM
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-x86asm         disable use of standalone x86 assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --disable-valgrind-backtrace do not print a backtrace under Valgrind
341                            (only applies to --disable-optimizations builds)
342   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
343                            in the name) of tests whose result is ignored
344
345 NOTE: Object files are built at the place where configure is launched.
346 EOF
347   exit 0
348 }
349
350 quotes='""'
351
352 log(){
353     echo "$@" >> $logfile
354 }
355
356 log_file(){
357     log BEGIN $1
358     i=1
359     while read line; do
360         printf '%5s   %s\n' "${i}" "${line}"
361         i=$(($i+1))
362     done < $1 >> $logfile
363     log END $1
364 }
365
366 echolog(){
367     log "$@"
368     echo "$@"
369 }
370
371 warn(){
372     log "WARNING: $*"
373     WARNINGS="${WARNINGS}WARNING: $*\n"
374 }
375
376 die(){
377     echolog "$@"
378     cat <<EOF
379
380 If you think configure made a mistake, make sure you are using the latest
381 version from Git.  If the latest version fails, report the problem to the
382 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
383 EOF
384     if disabled logging; then
385         cat <<EOF
386 Rerun configure with logging enabled (do not use --disable-logging), and
387 include the log this produces with your report.
388 EOF
389     else
390         cat <<EOF
391 Include the log file "$logfile" produced by configure as this will help
392 solving the problem.
393 EOF
394     fi
395     exit 1
396 }
397
398 # Avoid locale weirdness, besides we really just want to translate ASCII.
399 toupper(){
400     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
401 }
402
403 tolower(){
404     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
405 }
406
407 c_escape(){
408     echo "$*" | sed 's/["\\]/\\\0/g'
409 }
410
411 sh_quote(){
412     v=$(echo "$1" | sed "s/'/'\\\\''/g")
413     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
414     echo "$v"
415 }
416
417 cleanws(){
418     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
419 }
420
421 filter(){
422     pat=$1
423     shift
424     for v; do
425         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
426     done
427 }
428
429 filter_out(){
430     pat=$1
431     shift
432     for v; do
433         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
434     done
435 }
436
437 map(){
438     m=$1
439     shift
440     for v; do eval $m; done
441 }
442
443 add_suffix(){
444     suffix=$1
445     shift
446     for v; do echo ${v}${suffix}; done
447 }
448
449 set_all(){
450     value=$1
451     shift
452     for var in $*; do
453         eval $var=$value
454     done
455 }
456
457 set_weak(){
458     value=$1
459     shift
460     for var; do
461         eval : \${$var:=$value}
462     done
463 }
464
465 sanitize_var_name(){
466     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
467 }
468
469 set_sanitized(){
470     var=$1
471     shift
472     eval $(sanitize_var_name "$var")='$*'
473 }
474
475 get_sanitized(){
476     eval echo \$$(sanitize_var_name "$1")
477 }
478
479 pushvar(){
480     for pvar in $*; do
481         eval level=\${${pvar}_level:=0}
482         eval ${pvar}_${level}="\$$pvar"
483         eval ${pvar}_level=$(($level+1))
484     done
485 }
486
487 popvar(){
488     for pvar in $*; do
489         eval level=\${${pvar}_level:-0}
490         test $level = 0 && continue
491         eval level=$(($level-1))
492         eval $pvar="\${${pvar}_${level}}"
493         eval ${pvar}_level=$level
494         eval unset ${pvar}_${level}
495     done
496 }
497
498 enable(){
499     set_all yes $*
500 }
501
502 disable(){
503     set_all no $*
504 }
505
506 enable_weak(){
507     set_weak yes $*
508 }
509
510 disable_weak(){
511     set_weak no $*
512 }
513
514 enable_sanitized(){
515     for var; do
516         enable $(sanitize_var_name $var)
517     done
518 }
519
520 disable_sanitized(){
521     for var; do
522         disable $(sanitize_var_name $var)
523     done
524 }
525
526 do_enable_deep(){
527     for var; do
528         enabled $var && continue
529         eval sel="\$${var}_select"
530         eval sgs="\$${var}_suggest"
531         pushvar var sgs
532         enable_deep $sel
533         popvar sgs
534         enable_deep_weak $sgs
535         popvar var
536     done
537 }
538
539 enable_deep(){
540     do_enable_deep $*
541     enable $*
542 }
543
544 enable_deep_weak(){
545     for var; do
546         disabled $var && continue
547         pushvar var
548         do_enable_deep $var
549         popvar var
550         enable_weak $var
551     done
552 }
553
554 enabled(){
555     test "${1#!}" = "$1" && op="=" || op="!="
556     eval test "x\$${1#!}" $op "xyes"
557 }
558
559 disabled(){
560     test "${1#!}" = "$1" && op="=" || op="!="
561     eval test "x\$${1#!}" $op "xno"
562 }
563
564 enabled_all(){
565     for opt; do
566         enabled $opt || return 1
567     done
568 }
569
570 disabled_all(){
571     for opt; do
572         disabled $opt || return 1
573     done
574 }
575
576 enabled_any(){
577     for opt; do
578         enabled $opt && return 0
579     done
580 }
581
582 disabled_any(){
583     for opt; do
584         disabled $opt && return 0
585     done
586     return 1
587 }
588
589 set_default(){
590     for opt; do
591         eval : \${$opt:=\$${opt}_default}
592     done
593 }
594
595 is_in(){
596     value=$1
597     shift
598     for var in $*; do
599         [ $var = $value ] && return 0
600     done
601     return 1
602 }
603
604 check_deps(){
605     for cfg; do
606         enabled ${cfg}_checking && die "Circular dependency for $cfg."
607         disabled ${cfg}_checking && continue
608         enable ${cfg}_checking
609
610         eval dep_all="\$${cfg}_deps"
611         eval dep_any="\$${cfg}_deps_any"
612         eval dep_con="\$${cfg}_conflict"
613         eval dep_sel="\$${cfg}_select"
614         eval dep_sgs="\$${cfg}_suggest"
615         eval dep_ifa="\$${cfg}_if"
616         eval dep_ifn="\$${cfg}_if_any"
617
618         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
619         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
620         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
621
622         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
623         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
624         enabled_all  $dep_all || disable $cfg
625         enabled_any  $dep_any || disable $cfg
626         disabled_all $dep_con || disable $cfg
627         disabled_any $dep_sel && disable $cfg
628
629         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
630
631         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
632             # filter out library deps, these do not belong in extralibs
633             is_in $dep $LIBRARY_LIST && continue
634             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
635         done
636
637         disable ${cfg}_checking
638     done
639 }
640
641 print_config(){
642     pfx=$1
643     files=$2
644     shift 2
645     map 'eval echo "$v \${$v:-no}"' "$@" |
646     awk "BEGIN { split(\"$files\", files) }
647         {
648             c = \"$pfx\" toupper(\$1);
649             v = \$2;
650             sub(/yes/, 1, v);
651             sub(/no/,  0, v);
652             for (f in files) {
653                 file = files[f];
654                 if (file ~ /\\.h\$/) {
655                     printf(\"#define %s %d\\n\", c, v) >>file;
656                 } else if (file ~ /\\.asm\$/) {
657                     printf(\"%%define %s %d\\n\", c, v) >>file;
658                 } else if (file ~ /\\.mak\$/) {
659                     n = -v ? \"\" : \"!\";
660                     printf(\"%s%s=yes\\n\", n, c) >>file;
661                 }
662             }
663         }"
664 }
665
666 print_enabled(){
667     suf=$1
668     shift
669     for v; do
670         enabled $v && printf "%s\n" ${v%$suf}
671     done
672 }
673
674 append(){
675     var=$1
676     shift
677     eval "$var=\"\$$var $*\""
678 }
679
680 prepend(){
681     var=$1
682     shift
683     eval "$var=\"$* \$$var\""
684 }
685
686 unique(){
687     var=$1
688     uniq_list=""
689     for tok in $(eval echo \$$var); do
690         uniq_list="$(filter_out $tok $uniq_list) $tok"
691     done
692     eval "$var=\"${uniq_list}\""
693 }
694
695 resolve(){
696     var=$1
697     tmpvar=
698     for entry in $(eval echo \$$var); do
699         tmpvar="$tmpvar $(eval echo \$${entry})"
700     done
701     eval "$var=\"${tmpvar}\""
702 }
703
704 add_cppflags(){
705     append CPPFLAGS "$@"
706 }
707
708 add_cflags(){
709     append CFLAGS $($cflags_filter "$@")
710 }
711
712 add_cflags_headers(){
713     append CFLAGS_HEADERS $($cflags_filter "$@")
714 }
715
716 add_asflags(){
717     append ASFLAGS $($asflags_filter "$@")
718 }
719
720 add_objcflags(){
721     append OBJCFLAGS $($objcflags_filter "$@")
722 }
723
724 add_ldflags(){
725     append LDFLAGS $($ldflags_filter "$@")
726 }
727
728 add_ldexeflags(){
729     append LDEXEFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldsoflags(){
733     append LDSOFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append STRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 check_cmd(){
763     log "$@"
764     "$@" >> $logfile 2>&1
765 }
766
767 cc_o(){
768     eval printf '%s\\n' $CC_O
769 }
770
771 cc_e(){
772     eval printf '%s\\n' $CC_E
773 }
774
775 check_cc(){
776     log check_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 check_objcc(){
783     log check_objcc "$@"
784     cat > $TMPC
785     log_file $TMPC
786     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
787 }
788
789 check_cpp(){
790     log check_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 check_as(){
801     log check_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_inline_asm(){
808     log check_inline_asm "$@"
809     name="$1"
810     code="$2"
811     shift 2
812     disable $name
813     check_cc "$@" <<EOF && enable $name
814 void foo(void){ __asm__ volatile($code); }
815 EOF
816 }
817
818 check_insn(){
819     log check_insn "$@"
820     check_inline_asm ${1}_inline "\"$2\""
821     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
822 }
823
824 check_x86asm(){
825     log check_x86asm "$@"
826     echo "$1" > $TMPS
827     log_file $TMPS
828     shift 1
829     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
830 }
831
832 ld_o(){
833     eval printf '%s\\n' $LD_O
834 }
835
836 check_ld(){
837     log check_ld "$@"
838     flags=$(filter_out '-l*' "$@")
839     libs=$(filter '-l*' "$@")
840     check_cc $($cflags_filter $flags) || return
841     flags=$($ldflags_filter $flags)
842     libs=$($ldflags_filter $libs)
843     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
844 }
845
846 print_include(){
847     hdr=$1
848     test "${hdr%.h}" = "${hdr}" &&
849         echo "#include $hdr"    ||
850         echo "#include <$hdr>"
851 }
852
853 check_code(){
854     log check_code "$@"
855     check=$1
856     headers=$2
857     code=$3
858     shift 3
859     {
860         for hdr in $headers; do
861             print_include $hdr
862         done
863         echo "int main(void) { $code; return 0; }"
864     } | check_$check "$@"
865 }
866
867 check_cppflags(){
868     log check_cppflags "$@"
869     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
870 #include <stdlib.h>;
871 EOF
872 }
873
874 test_cflags(){
875     log test_cflags "$@"
876     set -- $($cflags_filter "$@")
877     check_cc "$@" <<EOF
878 int x;
879 EOF
880 }
881
882 check_cflags(){
883     log check_cflags "$@"
884     test_cflags "$@" && add_cflags "$@"
885 }
886
887 test_objcflags(){
888     log test_objcflags "$@"
889     set -- $($objcflags_filter "$@")
890     check_objcc "$@" <<EOF
891 int x;
892 EOF
893 }
894
895 check_objcflags(){
896     log check_objcflags "$@"
897     test_objcflags "$@" && add_objcflags "$@"
898 }
899
900 test_ldflags(){
901     log test_ldflags "$@"
902     set -- $($ldflags_filter "$@")
903     check_ld "$@" <<EOF
904 int main(void){ return 0; }
905 EOF
906 }
907
908 check_ldflags(){
909     log check_ldflags "$@"
910     test_ldflags "$@" && add_ldflags "$@"
911 }
912
913 test_stripflags(){
914     log test_stripflags "$@"
915     # call check_cc to get a fresh TMPO
916     check_cc <<EOF
917 int main(void) { return 0; }
918 EOF
919     check_cmd $strip $STRIPFLAGS "$@" $TMPO
920 }
921
922 check_stripflags(){
923     log check_stripflags "$@"
924     test_stripflags "$@" && add_stripflags "$@"
925 }
926
927 check_header(){
928     log check_header "$@"
929     headers=$1
930     shift
931     disable_sanitized $headers
932     {
933         for hdr in $headers; do
934             print_include $hdr
935         done
936         echo "int x;"
937     } | check_cpp "$@" && enable_sanitized $headers
938 }
939
940 check_func(){
941     log check_func "$@"
942     func=$1
943     shift
944     disable $func
945     check_ld "$@" <<EOF && enable $func
946 extern int $func();
947 int main(void){ $func(); }
948 EOF
949 }
950
951 check_mathfunc(){
952     log check_mathfunc "$@"
953     func=$1
954     narg=$2
955     shift 2
956     test $narg = 2 && args="f, g" || args="f"
957     disable $func
958     check_ld "$@" <<EOF && enable $func
959 #include <math.h>
960 float foo(float f, float g) { return $func($args); }
961 int main(void){ return 0; }
962 EOF
963 }
964
965 check_func_headers(){
966     log check_func_headers "$@"
967     headers=$1
968     funcs=$2
969     shift 2
970     {
971         for hdr in $headers; do
972             print_include $hdr
973         done
974         for func in $funcs; do
975             echo "long check_$func(void) { return (long) $func; }"
976         done
977         echo "int main(void) { return 0; }"
978     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
979 }
980
981 check_cpp_condition(){
982     log check_cpp_condition "$@"
983     header=$1
984     condition=$2
985     shift 2
986     check_cpp "$@" <<EOF
987 #include <$header>
988 #if !($condition)
989 #error "unsatisfied condition: $condition"
990 #endif
991 EOF
992 }
993
994 test_cflags_cpp(){
995     log test_cflags_cpp "$@"
996     flags=$1
997     condition=$2
998     shift 2
999     set -- $($cflags_filter "$flags")
1000     check_cpp "$@" <<EOF
1001 #if !($condition)
1002 #error "unsatisfied condition: $condition"
1003 #endif
1004 EOF
1005 }
1006
1007 check_lib(){
1008     log check_lib "$@"
1009     name="$1"
1010     headers="$2"
1011     funcs="$3"
1012     shift 3
1013     disable $name
1014     check_func_headers "$headers" "$funcs" "$@" &&
1015         enable $name && eval ${name}_extralibs="\$@"
1016 }
1017
1018 test_pkg_config(){
1019     log test_pkg_config "$@"
1020     name="$1"
1021     pkg_version="$2"
1022     pkg="${2%% *}"
1023     headers="$3"
1024     funcs="$4"
1025     shift 4
1026     disable $name
1027     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1028     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1029     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1030     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1031         enable $name &&
1032         set_sanitized "${name}_cflags"    $pkg_cflags &&
1033         set_sanitized "${name}_extralibs" $pkg_libs
1034 }
1035
1036 check_pkg_config(){
1037     log check_pkg_config "$@"
1038     name="$1"
1039     test_pkg_config "$@" &&
1040         eval add_cflags \$${name}_cflags
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require_header "$@"
1130     headers="$1"
1131     shift
1132     check_header "$headers" "$@" || die "ERROR: $headers not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require_cpp_condition "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224 "
1225 AVFILTER_COMPONENTS="
1226     filters
1227 "
1228 AVFORMAT_COMPONENTS="
1229     demuxers
1230     muxers
1231     protocols
1232 "
1233
1234 COMPONENT_LIST="
1235     $AVCODEC_COMPONENTS
1236     $AVDEVICE_COMPONENTS
1237     $AVFILTER_COMPONENTS
1238     $AVFORMAT_COMPONENTS
1239 "
1240
1241 EXAMPLE_LIST="
1242     decode_audio_example
1243     decode_video_example
1244     encode_audio_example
1245     encode_video_example
1246     filter_audio_example
1247     metadata_example
1248     output_example
1249     qsvdec_example
1250     transcode_aac_example
1251 "
1252
1253 # catchall list of things that require external libs to link
1254 EXTRALIBS_LIST="
1255     cpu_init
1256     cws2fws
1257 "
1258
1259 HWACCEL_LIBRARY_NONFREE_LIST="
1260     cuda
1261     cuvid
1262     libnpp
1263 "
1264 HWACCEL_LIBRARY_LIST="
1265     $HWACCEL_LIBRARY_NONFREE_LIST
1266     d3d11va
1267     dxva2
1268     libmfx
1269     mmal
1270     nvenc
1271     omx
1272     vaapi
1273     vda
1274     vdpau
1275 "
1276
1277 EXTERNAL_LIBRARY_GPL_LIST="
1278     libcdio
1279     libx264
1280     libx265
1281     libxavs
1282     libxvid
1283 "
1284
1285 EXTERNAL_LIBRARY_NONFREE_LIST="
1286     libfaac
1287     libfdk_aac
1288     openssl
1289 "
1290
1291 EXTERNAL_LIBRARY_VERSION3_LIST="
1292     libopencore_amrnb
1293     libopencore_amrwb
1294     libvo_aacenc
1295     libvo_amrwbenc
1296 "
1297
1298 EXTERNAL_LIBRARY_LIST="
1299     $EXTERNAL_LIBRARY_GPL_LIST
1300     $EXTERNAL_LIBRARY_NONFREE_LIST
1301     $EXTERNAL_LIBRARY_VERSION3_LIST
1302     avisynth
1303     avxsynth
1304     frei0r
1305     gnutls
1306     libbs2b
1307     libdc1394
1308     libdcadec
1309     libfontconfig
1310     libfreetype
1311     libgsm
1312     libhdcd
1313     libilbc
1314     libjack
1315     libkvazaar
1316     libmp3lame
1317     libopencv
1318     libopenh264
1319     libopenjpeg
1320     libopus
1321     libpulse
1322     librtmp
1323     libschroedinger
1324     libsnappy
1325     libspeex
1326     libtheora
1327     libtwolame
1328     libvorbis
1329     libvpx
1330     libwavpack
1331     libwebp
1332     libxcb
1333     libxcb_shm
1334     libxcb_xfixes
1335 "
1336
1337 SYSTEM_LIBRARY_LIST="
1338     bzlib
1339     zlib
1340 "
1341
1342 FEATURE_LIST="
1343     gray
1344     hardcoded_tables
1345     omx_rpi
1346     runtime_cpudetect
1347     safe_bitstream_reader
1348     shared
1349     small
1350     sram
1351     static
1352     swscale_alpha
1353 "
1354
1355 LIBRARY_LIST="
1356     avcodec
1357     avdevice
1358     avfilter
1359     avformat
1360     avresample
1361     avutil
1362     swscale
1363 "
1364
1365 LICENSE_LIST="
1366     gpl
1367     nonfree
1368     version3
1369 "
1370
1371 PROGRAM_LIST="
1372     avconv
1373     avplay
1374     avprobe
1375 "
1376
1377 SUBSYSTEM_LIST="
1378     dct
1379     doc
1380     error_resilience
1381     faan
1382     fft
1383     lsp
1384     lzo
1385     mdct
1386     network
1387     rdft
1388 "
1389
1390 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1391 CONFIG_LIST="
1392     $EXAMPLE_LIST
1393     $EXTERNAL_LIBRARY_LIST
1394     $HWACCEL_LIBRARY_LIST
1395     $FEATURE_LIST
1396     $LICENSE_LIST
1397     $LIBRARY_LIST
1398     $PROGRAM_LIST
1399     $SUBSYSTEM_LIST
1400     $SYSTEM_LIBRARY_LIST
1401     neon_clobber_test
1402     pic
1403     pod2man
1404     texi2html
1405     thumb
1406     valgrind_backtrace
1407     xmm_clobber_test
1408     $COMPONENT_LIST
1409 "
1410
1411 THREADS_LIST="
1412     pthreads
1413     w32threads
1414 "
1415
1416 ATOMICS_LIST="
1417     atomics_gcc
1418     atomics_suncc
1419     atomics_win32
1420 "
1421
1422 ARCH_LIST="
1423     aarch64
1424     alpha
1425     arm
1426     avr32
1427     avr32_ap
1428     avr32_uc
1429     bfin
1430     ia64
1431     m68k
1432     mips
1433     mips64
1434     parisc
1435     ppc
1436     ppc64
1437     s390
1438     sh4
1439     sparc
1440     sparc64
1441     tilegx
1442     tilepro
1443     tomi
1444     x86
1445     x86_32
1446     x86_64
1447 "
1448
1449 ARCH_EXT_LIST_ARM="
1450     armv5te
1451     armv6
1452     armv6t2
1453     armv8
1454     neon
1455     vfp
1456     vfpv3
1457 "
1458
1459 ARCH_EXT_LIST_X86_SIMD="
1460     amd3dnow
1461     amd3dnowext
1462     avx
1463     avx2
1464     fma3
1465     fma4
1466     mmx
1467     mmxext
1468     sse
1469     sse2
1470     sse3
1471     sse4
1472     sse42
1473     ssse3
1474     xop
1475 "
1476
1477 ARCH_EXT_LIST_PPC="
1478     altivec
1479     dcbzl
1480     ldbrx
1481     power8
1482     ppc4xx
1483     vsx
1484 "
1485
1486 ARCH_EXT_LIST_X86="
1487     $ARCH_EXT_LIST_X86_SIMD
1488     cpunop
1489     i686
1490 "
1491
1492 ARCH_EXT_LIST_MIPS="
1493     loongson
1494     mips32r1
1495     mips64r1
1496     mips32r2
1497     mips64r2
1498     mips32r6
1499     mips64r6
1500 "
1501
1502 ARCH_EXT_LIST="
1503     $ARCH_EXT_LIST_ARM
1504     $ARCH_EXT_LIST_MIPS
1505     $ARCH_EXT_LIST_PPC
1506     $ARCH_EXT_LIST_X86
1507     vis
1508 "
1509
1510 ARCH_FEATURES="
1511     aligned_stack
1512     fast_64bit
1513     fast_clz
1514     fast_cmov
1515     local_aligned_8
1516     local_aligned_16
1517     local_aligned_32
1518     simd_align_16
1519     simd_align_32
1520 "
1521
1522 BUILTIN_LIST="
1523     atomic_cas_ptr
1524     machine_rw_barrier
1525     MemoryBarrier
1526     mm_empty
1527     rdtsc
1528     sem_timedwait
1529     sync_val_compare_and_swap
1530 "
1531 HAVE_LIST_CMDLINE="
1532     inline_asm
1533     symver
1534     x86asm
1535 "
1536
1537 HAVE_LIST_PUB="
1538     bigendian
1539     fast_unaligned
1540 "
1541
1542 HEADERS_LIST="
1543     AVFoundation_AVFoundation_h
1544     arpa_inet_h
1545     cdio_paranoia_h
1546     cdio_paranoia_paranoia_h
1547     dispatch_dispatch_h
1548     dev_bktr_ioctl_bt848_h
1549     dev_bktr_ioctl_meteor_h
1550     dev_ic_bt8xx_h
1551     dev_video_bktr_ioctl_bt848_h
1552     dev_video_meteor_ioctl_meteor_h
1553     direct_h
1554     dxgidebug_h
1555     dxva_h
1556     io_h
1557     machine_ioctl_bt848_h
1558     machine_ioctl_meteor_h
1559     malloc_h
1560     poll_h
1561     sys_param_h
1562     sys_resource_h
1563     sys_select_h
1564     sys_soundcard_h
1565     sys_time_h
1566     sys_un_h
1567     sys_videoio_h
1568     unistd_h
1569     valgrind_valgrind_h
1570     windows_h
1571     winsock2_h
1572 "
1573
1574 INTRINSICS_LIST="
1575     intrinsics_neon
1576 "
1577
1578 MATH_FUNCS="
1579     atanf
1580     atan2f
1581     cbrtf
1582     cosf
1583     exp2
1584     exp2f
1585     expf
1586     isinf
1587     isnan
1588     ldexpf
1589     llrint
1590     llrintf
1591     log2
1592     log2f
1593     log10f
1594     lrint
1595     lrintf
1596     powf
1597     rint
1598     round
1599     roundf
1600     sinf
1601     trunc
1602     truncf
1603 "
1604
1605 SYSTEM_FEATURES="
1606     dos_paths
1607     libc_msvcrt
1608     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1609     section_data_rel_ro
1610     threads
1611     uwp
1612 "
1613
1614 SYSTEM_FUNCS="
1615     aligned_malloc
1616     clock_gettime
1617     closesocket
1618     CommandLineToArgvW
1619     fcntl
1620     getaddrinfo
1621     gethrtime
1622     getopt
1623     GetProcessAffinityMask
1624     GetProcessMemoryInfo
1625     GetProcessTimes
1626     getrusage
1627     GetSystemTimeAsFileTime
1628     gettimeofday
1629     gmtime_r
1630     inet_aton
1631     isatty
1632     localtime_r
1633     mach_absolute_time
1634     MapViewOfFile
1635     memalign
1636     mmap
1637     mprotect
1638     nanosleep
1639     posix_memalign
1640     sched_getaffinity
1641     SetConsoleTextAttribute
1642     setmode
1643     setrlimit
1644     Sleep
1645     strerror_r
1646     sysconf
1647     sysctl
1648     usleep
1649     VirtualAlloc
1650 "
1651
1652 SYSTEM_LIBRARIES="
1653     sdl
1654     vaapi_1
1655     vaapi_drm
1656     vaapi_x11
1657     vdpau_x11
1658     wincrypt
1659 "
1660
1661 TOOLCHAIN_FEATURES="
1662     as_arch_directive
1663     as_fpu_directive
1664     as_func
1665     as_object_arch
1666     asm_mod_q
1667     blocks_extension
1668     ebp_available
1669     ebx_available
1670     gnu_as
1671     ibm_asm
1672     inline_asm_labels
1673     pragma_deprecated
1674     symver_asm_label
1675     symver_gnu_asm
1676     vfp_args
1677     xform_asm
1678     xmm_clobbers
1679 "
1680
1681 TYPES_LIST="
1682     CONDITION_VARIABLE_Ptr
1683     CUVIDDECODECREATEINFO_bitDepthMinus8
1684     socklen_t
1685     struct_addrinfo
1686     struct_group_source_req
1687     struct_ip_mreq_source
1688     struct_ipv6_mreq
1689     struct_pollfd
1690     struct_rusage_ru_maxrss
1691     struct_sockaddr_in6
1692     struct_sockaddr_sa_len
1693     struct_sockaddr_storage
1694     struct_v4l2_frmivalenum_discrete
1695 "
1696
1697 HAVE_LIST="
1698     $ARCH_EXT_LIST
1699     $(add_suffix _external $ARCH_EXT_LIST)
1700     $(add_suffix _inline   $ARCH_EXT_LIST)
1701     $ARCH_FEATURES
1702     $BUILTIN_LIST
1703     $HAVE_LIST_CMDLINE
1704     $HAVE_LIST_PUB
1705     $HEADERS_LIST
1706     $INTRINSICS_LIST
1707     $MATH_FUNCS
1708     $SYSTEM_FEATURES
1709     $SYSTEM_FUNCS
1710     $SYSTEM_LIBRARIES
1711     $THREADS_LIST
1712     $TOOLCHAIN_FEATURES
1713     $TYPES_LIST
1714 "
1715
1716 # options emitted with CONFIG_ prefix but not available on the command line
1717 CONFIG_EXTRA="
1718     aandcttables
1719     ac3dsp
1720     adts_header
1721     audio_frame_queue
1722     audiodsp
1723     blockdsp
1724     bswapdsp
1725     cabac
1726     cbs
1727     cbs_h264
1728     cbs_h265
1729     cbs_mpeg2
1730     dirac_parse
1731     dvprofile
1732     faandct
1733     faanidct
1734     fdctdsp
1735     flacdsp
1736     fmtconvert
1737     g722dsp
1738     gmp
1739     golomb
1740     gplv3
1741     h263dsp
1742     h264chroma
1743     h264dsp
1744     h264parse
1745     h264pred
1746     h264qpel
1747     hevcparse
1748     hpeldsp
1749     huffman
1750     huffyuvdsp
1751     huffyuvencdsp
1752     idctdsp
1753     iirfilter
1754     imdct15
1755     intrax8
1756     iso_media
1757     ividsp
1758     jpegtables
1759     lgplv3
1760     libx262
1761     libxcb_shape
1762     lpc
1763     lzf
1764     me_cmp
1765     mpeg_er
1766     mpegaudio
1767     mpegaudiodsp
1768     mpegaudioheader
1769     mpegvideo
1770     mpegvideoenc
1771     mss34dsp
1772     pixblockdsp
1773     qpeldsp
1774     qsv
1775     qsvdec
1776     qsvenc
1777     qsvvpp
1778     rangecoder
1779     riffdec
1780     riffenc
1781     rtpdec
1782     rtpenc_chain
1783     rv34dsp
1784     sinewin
1785     snappy
1786     srtp
1787     startcode
1788     texturedsp
1789     texturedspenc
1790     tpeldsp
1791     vaapi_encode
1792     vc1dsp
1793     videodsp
1794     vp3dsp
1795     vp56dsp
1796     vp8dsp
1797     wma_freqs
1798     wmv2dsp
1799 "
1800
1801 CMDLINE_SELECT="
1802     $ARCH_EXT_LIST
1803     $CONFIG_LIST
1804     $HAVE_LIST_CMDLINE
1805     $THREADS_LIST
1806     asm
1807     cross_compile
1808     debug
1809     extra_warnings
1810     logging
1811     lto
1812     optimizations
1813     rpath
1814 "
1815
1816 PATHS_LIST="
1817     bindir
1818     datadir
1819     docdir
1820     incdir
1821     libdir
1822     mandir
1823     prefix
1824     shlibdir
1825 "
1826
1827 CMDLINE_SET="
1828     $PATHS_LIST
1829     ar
1830     arch
1831     as
1832     cc
1833     objcc
1834     cpu
1835     cross_prefix
1836     custom_allocator
1837     dep_cc
1838     env
1839     extra_version
1840     host_cc
1841     host_cflags
1842     host_extralibs
1843     host_ld
1844     host_ldflags
1845     host_os
1846     ignore_tests
1847     ld
1848     logfile
1849     malloc_prefix
1850     nm
1851     optflags
1852     pkg_config
1853     pkg_config_flags
1854     samples
1855     sysinclude
1856     sysroot
1857     target_exec
1858     target_os
1859     target_path
1860     target_samples
1861     toolchain
1862     x86asmexe
1863 "
1864
1865 CMDLINE_APPEND="
1866     extra_cflags
1867     extra_objcflags
1868     host_cppflags
1869 "
1870
1871 # code dependency declarations
1872
1873 # architecture extensions
1874
1875 armv5te_deps="arm"
1876 armv6_deps="arm"
1877 armv6t2_deps="arm"
1878 armv8_deps="aarch64"
1879 neon_deps_any="aarch64 arm"
1880 intrinsics_neon_deps="neon"
1881 vfp_deps_any="aarch64 arm"
1882 vfpv3_deps="vfp"
1883
1884 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1885
1886 altivec_deps="ppc"
1887 dcbzl_deps="ppc"
1888 ldbrx_deps="ppc"
1889 ppc4xx_deps="ppc"
1890 vsx_deps="altivec"
1891 power8_deps="vsx"
1892
1893 loongson_deps="mips"
1894 mips32r1_deps="mips32"
1895 mips32r2_deps="mips32"
1896 mips32r6_deps="mips32"
1897 mips64r1_deps="mips64"
1898 mips64r2_deps="mips64"
1899 mips64r6_deps="mips64"
1900
1901 vis_deps="sparc"
1902
1903 cpunop_deps="i686"
1904 x86_64_select="i686"
1905 x86_64_suggest="fast_cmov"
1906
1907 amd3dnow_deps="mmx"
1908 amd3dnowext_deps="amd3dnow"
1909 i686_deps="x86"
1910 mmx_deps="x86"
1911 mmxext_deps="mmx"
1912 sse_deps="mmxext"
1913 sse2_deps="sse"
1914 sse3_deps="sse2"
1915 ssse3_deps="sse3"
1916 sse4_deps="ssse3"
1917 sse42_deps="sse4"
1918 avx_deps="sse42"
1919 xop_deps="avx"
1920 fma3_deps="avx"
1921 fma4_deps="avx"
1922 avx2_deps="avx"
1923
1924 mmx_external_deps="x86asm"
1925 mmx_inline_deps="inline_asm x86"
1926 mmx_suggest="mmx_external mmx_inline"
1927
1928 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1929     eval dep=\$${ext}_deps
1930     eval ${ext}_external_deps='"${dep}_external"'
1931     eval ${ext}_inline_deps='"${dep}_inline"'
1932     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1933 done
1934
1935 aligned_stack_if_any="aarch64 ppc x86"
1936 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1937 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1938 fast_unaligned_if_any="aarch64 ppc x86"
1939 simd_align_16_if_any="altivec neon sse"
1940 simd_align_32_if_any="avx"
1941
1942 # system capabilities
1943 symver_if_any="symver_asm_label symver_gnu_asm"
1944 valgrind_backtrace_conflict="optimizations"
1945 valgrind_backtrace_deps="valgrind_valgrind_h"
1946
1947 # threading support
1948 atomics_gcc_if="sync_val_compare_and_swap"
1949 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1950 atomics_win32_if="MemoryBarrier"
1951 atomics_native_if_any="$ATOMICS_LIST"
1952 w32threads_deps="atomics_native"
1953 threads_if_any="$THREADS_LIST"
1954
1955 # subsystems
1956 cbs_h264_select="cbs golomb"
1957 cbs_h265_select="cbs golomb"
1958 cbs_mpeg2_select="cbs"
1959 dct_select="rdft"
1960 dirac_parse_select="golomb"
1961 error_resilience_select="me_cmp"
1962 faandct_deps="faan"
1963 faandct_select="fdctdsp"
1964 faanidct_deps="faan"
1965 faanidct_select="idctdsp"
1966 h264dsp_select="startcode"
1967 hevcparse_select="golomb"
1968 intrax8_select="blockdsp idctdsp"
1969 mdct_select="fft"
1970 rdft_select="fft"
1971 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1972 mpeg_er_select="error_resilience"
1973 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1974 mpegaudiodsp_select="dct"
1975 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1976 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1977 vc1dsp_select="h264chroma qpeldsp startcode"
1978
1979 # decoders / encoders
1980 aac_decoder_select="adts_header imdct15 mdct sinewin"
1981 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1982 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1983 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1984 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1985 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1986 adpcm_g722_decoder_select="g722dsp"
1987 adpcm_g722_encoder_select="g722dsp"
1988 aic_decoder_select="golomb idctdsp"
1989 alac_encoder_select="lpc"
1990 als_decoder_select="bswapdsp"
1991 amrnb_decoder_select="lsp"
1992 amrwb_decoder_select="lsp"
1993 amv_decoder_select="sp5x_decoder"
1994 ape_decoder_select="bswapdsp"
1995 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1996 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1997 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1998 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1999 atrac1_decoder_select="mdct sinewin"
2000 atrac3_decoder_select="mdct"
2001 atrac3p_decoder_select="mdct sinewin"
2002 bink_decoder_select="blockdsp hpeldsp"
2003 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2004 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2005 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2006 clearvideo_decoder_select="idctdsp"
2007 cllc_decoder_select="bswapdsp"
2008 comfortnoise_encoder_select="lpc"
2009 cook_decoder_select="audiodsp mdct sinewin"
2010 cscd_decoder_select="lzo"
2011 cscd_decoder_suggest="zlib"
2012 dca_decoder_select="fmtconvert mdct"
2013 dds_decoder_select="texturedsp"
2014 dnxhd_decoder_select="blockdsp idctdsp"
2015 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2016 dvvideo_decoder_select="dvprofile idctdsp"
2017 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2018 dxa_decoder_deps="zlib"
2019 dxv_decoder_select="lzf texturedsp"
2020 eac3_decoder_select="ac3_decoder"
2021 eac3_encoder_select="ac3_encoder"
2022 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2023 eatgq_decoder_select="aandcttables idctdsp"
2024 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2025 exr_decoder_deps="zlib"
2026 ffv1_decoder_select="rangecoder"
2027 ffv1_encoder_select="rangecoder"
2028 ffvhuff_decoder_select="huffyuv_decoder"
2029 ffvhuff_encoder_select="huffyuv_encoder"
2030 fic_decoder_select="golomb"
2031 flac_decoder_select="flacdsp"
2032 flac_encoder_select="bswapdsp flacdsp lpc"
2033 flashsv_decoder_deps="zlib"
2034 flashsv_encoder_deps="zlib"
2035 flashsv2_decoder_deps="zlib"
2036 flv_decoder_select="h263_decoder"
2037 flv_encoder_select="h263_encoder"
2038 fourxm_decoder_select="blockdsp bswapdsp"
2039 fraps_decoder_select="bswapdsp huffman"
2040 g2m_decoder_deps="zlib"
2041 g2m_decoder_select="blockdsp idctdsp jpegtables"
2042 h261_decoder_select="mpeg_er mpegvideo"
2043 h261_encoder_select="aandcttables mpegvideoenc"
2044 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2045 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2046 h263i_decoder_select="h263_decoder"
2047 h263p_encoder_select="h263_encoder"
2048 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2049 h264_decoder_suggest="error_resilience"
2050 hap_decoder_select="snappy texturedsp"
2051 hap_encoder_deps="libsnappy"
2052 hap_encoder_select="texturedspenc"
2053 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2054 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2055 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2056 iac_decoder_select="imc_decoder"
2057 imc_decoder_select="bswapdsp fft mdct sinewin"
2058 indeo3_decoder_select="hpeldsp"
2059 indeo4_decoder_select="ividsp"
2060 indeo5_decoder_select="ividsp"
2061 interplay_video_decoder_select="hpeldsp"
2062 jpegls_decoder_select="mjpeg_decoder"
2063 jv_decoder_select="blockdsp"
2064 lagarith_decoder_select="huffyuvdsp"
2065 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2066 magicyuv_decoder_select="huffyuvdsp"
2067 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2068 metasound_decoder_select="lsp mdct sinewin"
2069 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2070 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2071 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2072 mjpegb_decoder_select="mjpeg_decoder"
2073 mlp_decoder_select="mlp_parser"
2074 motionpixels_decoder_select="bswapdsp"
2075 mp1_decoder_select="mpegaudio"
2076 mp1float_decoder_select="mpegaudio"
2077 mp2_decoder_select="mpegaudio"
2078 mp2float_decoder_select="mpegaudio"
2079 mp3_decoder_select="mpegaudio"
2080 mp3adu_decoder_select="mpegaudio"
2081 mp3adufloat_decoder_select="mpegaudio"
2082 mp3float_decoder_select="mpegaudio"
2083 mp3on4_decoder_select="mpegaudio"
2084 mp3on4float_decoder_select="mpegaudio"
2085 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2086 mpc8_decoder_select="mpegaudiodsp"
2087 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2088 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2089 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2090 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2091 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2092 mpeg4_encoder_select="h263_encoder"
2093 msa1_decoder_select="mss34dsp"
2094 msmpeg4v1_decoder_select="h263_decoder"
2095 msmpeg4v2_decoder_select="h263_decoder"
2096 msmpeg4v2_encoder_select="h263_encoder"
2097 msmpeg4v3_decoder_select="h263_decoder"
2098 msmpeg4v3_encoder_select="h263_encoder"
2099 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2100 mts2_decoder_select="mss34dsp"
2101 mxpeg_decoder_select="mjpeg_decoder"
2102 nellymoser_decoder_select="mdct sinewin"
2103 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2104 nuv_decoder_select="idctdsp lzo"
2105 on2avc_decoder_select="mdct"
2106 opus_decoder_deps="avresample"
2107 opus_decoder_select="imdct15"
2108 png_decoder_deps="zlib"
2109 png_encoder_deps="zlib"
2110 png_encoder_select="huffyuvencdsp"
2111 prores_decoder_select="idctdsp"
2112 prores_encoder_select="fdctdsp"
2113 qcelp_decoder_select="lsp"
2114 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2115 ra_144_encoder_select="audio_frame_queue lpc"
2116 ralf_decoder_select="golomb"
2117 rscc_decoder_deps="zlib"
2118 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2119 rv10_encoder_select="h263_encoder"
2120 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2121 rv20_encoder_select="h263_encoder"
2122 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2123 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2124 screenpresso_decoder_deps="zlib"
2125 sipr_decoder_select="lsp"
2126 sp5x_decoder_select="mjpeg_decoder"
2127 svq1_decoder_select="hpeldsp"
2128 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2129 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2130 svq3_decoder_suggest="zlib"
2131 tak_decoder_select="audiodsp"
2132 tdsc_decoder_deps="zlib"
2133 tdsc_decoder_select="mjpeg_decoder"
2134 theora_decoder_select="vp3_decoder"
2135 thp_decoder_select="mjpeg_decoder"
2136 tiff_decoder_suggest="zlib"
2137 tiff_encoder_suggest="zlib"
2138 truehd_decoder_select="mlp_decoder"
2139 truemotion2_decoder_select="bswapdsp"
2140 truespeech_decoder_select="bswapdsp"
2141 tscc_decoder_deps="zlib"
2142 txd_decoder_select="texturedsp"
2143 twinvq_decoder_select="mdct lsp sinewin"
2144 utvideo_decoder_select="bswapdsp huffyuvdsp"
2145 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2146 vble_decoder_select="huffyuvdsp"
2147 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2148 vc1image_decoder_select="vc1_decoder"
2149 vorbis_decoder_select="mdct"
2150 vorbis_encoder_select="mdct"
2151 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2152 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2153 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2154 vp6a_decoder_select="vp6_decoder"
2155 vp6f_decoder_select="vp6_decoder"
2156 vp7_decoder_select="h264pred videodsp vp8dsp"
2157 vp8_decoder_select="h264pred videodsp vp8dsp"
2158 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2159 webp_decoder_select="vp8_decoder"
2160 wmapro_decoder_select="mdct sinewin wma_freqs"
2161 wmav1_decoder_select="mdct sinewin wma_freqs"
2162 wmav1_encoder_select="mdct sinewin wma_freqs"
2163 wmav2_decoder_select="mdct sinewin wma_freqs"
2164 wmav2_encoder_select="mdct sinewin wma_freqs"
2165 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2166 wmv1_decoder_select="h263_decoder"
2167 wmv1_encoder_select="h263_encoder"
2168 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2169 wmv2_encoder_select="h263_encoder wmv2dsp"
2170 wmv3_decoder_select="vc1_decoder"
2171 wmv3image_decoder_select="wmv3_decoder"
2172 zerocodec_decoder_deps="zlib"
2173 zlib_decoder_deps="zlib"
2174 zlib_encoder_deps="zlib"
2175 zmbv_decoder_deps="zlib"
2176 zmbv_encoder_deps="zlib"
2177
2178 # hardware accelerators
2179 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2180 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2181 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2182 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2183
2184 h263_vaapi_hwaccel_deps="vaapi"
2185 h263_vaapi_hwaccel_select="h263_decoder"
2186 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2187 h264_cuvid_hwaccel_select="h264_decoder"
2188 h264_d3d11va_hwaccel_deps="d3d11va"
2189 h264_d3d11va_hwaccel_select="h264_decoder"
2190 h264_d3d11va2_hwaccel_deps="d3d11va"
2191 h264_d3d11va2_hwaccel_select="h264_decoder"
2192 h264_dxva2_hwaccel_deps="dxva2"
2193 h264_dxva2_hwaccel_select="h264_decoder"
2194 h264_mmal_hwaccel_deps="mmal"
2195 h264_qsv_hwaccel_deps="libmfx"
2196 h264_vaapi_hwaccel_deps="vaapi"
2197 h264_vaapi_hwaccel_select="h264_decoder"
2198 h264_vda_hwaccel_deps="vda"
2199 h264_vda_hwaccel_select="h264_decoder"
2200 h264_vda_old_hwaccel_deps="vda"
2201 h264_vda_old_hwaccel_select="h264_decoder"
2202 h264_vdpau_hwaccel_deps="vdpau"
2203 h264_vdpau_hwaccel_select="h264_decoder"
2204 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2205 hevc_cuvid_hwaccel_select="hevc_decoder"
2206 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2207 hevc_d3d11va_hwaccel_select="hevc_decoder"
2208 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2209 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2210 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2211 hevc_dxva2_hwaccel_select="hevc_decoder"
2212 hevc_qsv_hwaccel_deps="libmfx"
2213 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2214 hevc_vaapi_hwaccel_select="hevc_decoder"
2215 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2216 hevc_vdpau_hwaccel_select="hevc_decoder"
2217 mpeg1_vdpau_hwaccel_deps="vdpau"
2218 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2219 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2220 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2221 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2222 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2223 mpeg2_dxva2_hwaccel_deps="dxva2"
2224 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2225 mpeg2_mmal_hwaccel_deps="mmal"
2226 mpeg2_qsv_hwaccel_deps="libmfx"
2227 mpeg2_vaapi_hwaccel_deps="vaapi"
2228 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2229 mpeg2_vdpau_hwaccel_deps="vdpau"
2230 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2231 mpeg4_vaapi_hwaccel_deps="vaapi"
2232 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2233 mpeg4_vdpau_hwaccel_deps="vdpau"
2234 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2235 vc1_d3d11va_hwaccel_deps="d3d11va"
2236 vc1_d3d11va_hwaccel_select="vc1_decoder"
2237 vc1_d3d11va2_hwaccel_deps="d3d11va"
2238 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2239 vc1_dxva2_hwaccel_deps="dxva2"
2240 vc1_dxva2_hwaccel_select="vc1_decoder"
2241 vc1_mmal_hwaccel_deps="mmal"
2242 vc1_qsv_hwaccel_deps="libmfx"
2243 vc1_vaapi_hwaccel_deps="vaapi"
2244 vc1_vaapi_hwaccel_select="vc1_decoder"
2245 vc1_vdpau_hwaccel_deps="vdpau"
2246 vc1_vdpau_hwaccel_select="vc1_decoder"
2247 vp8_qsv_hwaccel_deps="libmfx"
2248 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2249 vp8_vaapi_hwaccel_select="vp8_decoder"
2250 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2251 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2252 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2253 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2254 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2255
2256 # hardware-accelerated codecs
2257 nvenc_deps_any="libdl LoadLibrary"
2258 omx_deps="libdl pthreads"
2259 omx_rpi_select="omx"
2260 qsv_deps="libmfx"
2261 qsvdec_select="qsv"
2262 qsvenc_select="qsv"
2263 qsvvpp_select="qsv"
2264 vaapi_encode_deps="vaapi"
2265
2266 hwupload_cuda_filter_deps="cuda"
2267 scale_npp_filter_deps="cuda libnpp"
2268
2269 h264_mmal_decoder_deps="mmal"
2270 h264_nvenc_encoder_deps="nvenc"
2271 h264_omx_encoder_deps="omx"
2272 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2273 h264_qsv_encoder_select="qsvenc"
2274 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2275 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2276 hevc_nvenc_encoder_deps="nvenc"
2277 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2278 hevc_qsv_encoder_select="hevcparse qsvenc"
2279 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2280 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2281 mjpeg_qsv_encoder_deps="libmfx"
2282 mjpeg_qsv_encoder_select="qsvenc"
2283 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2284 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2285 mpeg2_mmal_decoder_deps="mmal"
2286 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2287 mpeg2_qsv_encoder_select="qsvenc"
2288 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2289 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2290 mpeg4_omx_encoder_deps="omx"
2291 vc1_mmal_decoder_deps="mmal"
2292 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2293 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2294 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2295 vp8_vaapi_encoder_select="vaapi_encode"
2296 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2297 vp9_vaapi_encoder_select="vaapi_encode"
2298
2299 nvenc_h264_encoder_select="h264_nvenc_encoder"
2300 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2301
2302 # parsers
2303 aac_parser_select="adts_header"
2304 h264_parser_select="golomb h264dsp h264parse"
2305 hevc_parser_select="hevcparse"
2306 mpegaudio_parser_select="mpegaudioheader"
2307 mpegvideo_parser_select="mpegvideo"
2308 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2309 vc1_parser_select="vc1dsp"
2310
2311 # bitstream_filters
2312 aac_adtstoasc_bsf_select="adts_header"
2313 h264_metadata_bsf_select="cbs_h264"
2314 h264_redundant_pps_bsf_select="cbs_h264"
2315 hevc_metadata_bsf_select="cbs_h265"
2316 mjpeg2jpeg_bsf_select="jpegtables"
2317 mpeg2_metadata_bsf_select="cbs_mpeg2"
2318 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2319
2320 # external libraries
2321 avisynth_deps="LoadLibrary"
2322 avxsynth_deps="libdl"
2323 avisynth_demuxer_deps_any="avisynth avxsynth"
2324 avisynth_demuxer_select="riffdec"
2325 libdcadec_decoder_deps="libdcadec"
2326 libfaac_encoder_deps="libfaac"
2327 libfaac_encoder_select="audio_frame_queue"
2328 libfdk_aac_decoder_deps="libfdk_aac"
2329 libfdk_aac_encoder_deps="libfdk_aac"
2330 libfdk_aac_encoder_select="audio_frame_queue"
2331 libgsm_decoder_deps="libgsm"
2332 libgsm_encoder_deps="libgsm"
2333 libgsm_ms_decoder_deps="libgsm"
2334 libgsm_ms_encoder_deps="libgsm"
2335 libilbc_decoder_deps="libilbc"
2336 libilbc_encoder_deps="libilbc"
2337 libkvazaar_encoder_deps="libkvazaar"
2338 libmp3lame_encoder_deps="libmp3lame"
2339 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2340 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2341 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2342 libopencore_amrnb_encoder_select="audio_frame_queue"
2343 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2344 libopenh264_decoder_deps="libopenh264"
2345 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2346 libopenh264_encoder_deps="libopenh264"
2347 libopenjpeg_decoder_deps="libopenjpeg"
2348 libopenjpeg_encoder_deps="libopenjpeg"
2349 libopus_decoder_deps="libopus"
2350 libopus_encoder_deps="libopus"
2351 libopus_encoder_select="audio_frame_queue"
2352 libschroedinger_decoder_deps="libschroedinger"
2353 libschroedinger_encoder_deps="libschroedinger"
2354 libspeex_decoder_deps="libspeex"
2355 libspeex_encoder_deps="libspeex"
2356 libspeex_encoder_select="audio_frame_queue"
2357 libtheora_encoder_deps="libtheora"
2358 libtwolame_encoder_deps="libtwolame"
2359 libvo_aacenc_encoder_deps="libvo_aacenc"
2360 libvo_aacenc_encoder_select="audio_frame_queue"
2361 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2362 libvorbis_encoder_deps="libvorbis"
2363 libvorbis_encoder_select="audio_frame_queue"
2364 libvpx_vp8_decoder_deps="libvpx"
2365 libvpx_vp8_encoder_deps="libvpx"
2366 libvpx_vp9_decoder_deps="libvpx"
2367 libvpx_vp9_encoder_deps="libvpx"
2368 libwavpack_encoder_deps="libwavpack"
2369 libwavpack_encoder_select="audio_frame_queue"
2370 libwebp_encoder_deps="libwebp"
2371 libx262_encoder_deps="libx262"
2372 libx264_encoder_deps="libx264"
2373 libx265_encoder_deps="libx265"
2374 libxavs_encoder_deps="libxavs"
2375 libxvid_encoder_deps="libxvid mkstemp"
2376
2377 # demuxers / muxers
2378 ac3_demuxer_select="ac3_parser"
2379 asf_demuxer_select="riffdec"
2380 asf_muxer_select="riffenc"
2381 asf_stream_muxer_select="asf_muxer"
2382 avi_demuxer_select="iso_media riffdec"
2383 avi_muxer_select="riffenc"
2384 caf_demuxer_select="iso_media riffdec"
2385 dash_muxer_select="mp4_muxer"
2386 dirac_demuxer_select="dirac_parser"
2387 dv_demuxer_select="dvprofile"
2388 dv_muxer_select="dvprofile"
2389 dxa_demuxer_select="riffdec"
2390 eac3_demuxer_select="ac3_parser"
2391 f4v_muxer_select="mov_muxer"
2392 flac_demuxer_select="flac_parser"
2393 hds_muxer_select="flv_muxer"
2394 hls_muxer_select="mpegts_muxer"
2395 ipod_muxer_select="mov_muxer"
2396 ismv_muxer_select="mov_muxer"
2397 matroska_audio_muxer_select="matroska_muxer"
2398 matroska_demuxer_select="iso_media riffdec"
2399 matroska_demuxer_suggest="bzlib lzo zlib"
2400 matroska_muxer_select="iso_media riffenc"
2401 mmf_muxer_select="riffenc"
2402 mov_demuxer_select="iso_media riffdec"
2403 mov_demuxer_suggest="zlib"
2404 mov_muxer_select="iso_media riffenc rtpenc_chain"
2405 mp3_demuxer_select="mpegaudio_parser"
2406 mp3_muxer_select="mpegaudioheader"
2407 mp4_muxer_select="mov_muxer"
2408 mpegts_demuxer_select="iso_media"
2409 mpegts_muxer_select="adts_muxer latm_muxer"
2410 mpegtsraw_demuxer_select="mpegts_demuxer"
2411 mxf_d10_muxer_select="mxf_muxer"
2412 nut_muxer_select="riffenc"
2413 nuv_demuxer_select="riffdec"
2414 oga_muxer_select="ogg_muxer"
2415 ogg_demuxer_select="dirac_parse"
2416 opus_muxer_select="ogg_muxer"
2417 psp_muxer_select="mov_muxer"
2418 rtp_demuxer_select="sdp_demuxer"
2419 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2420 rtsp_demuxer_select="http_protocol rtpdec"
2421 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2422 sap_demuxer_select="sdp_demuxer"
2423 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2424 sdp_demuxer_select="rtpdec"
2425 smoothstreaming_muxer_select="ismv_muxer"
2426 spdif_demuxer_select="adts_header"
2427 spdif_muxer_select="adts_header"
2428 spx_muxer_select="ogg_muxer"
2429 swf_demuxer_suggest="zlib"
2430 tak_demuxer_select="tak_parser"
2431 tg2_muxer_select="mov_muxer"
2432 tgp_muxer_select="mov_muxer"
2433 w64_demuxer_select="wav_demuxer"
2434 wav_demuxer_select="riffdec"
2435 wav_muxer_select="riffenc"
2436 webm_muxer_select="iso_media riffenc"
2437 wtv_demuxer_select="mpegts_demuxer riffdec"
2438 xmv_demuxer_select="riffdec"
2439 xwma_demuxer_select="riffdec"
2440
2441 # indevs
2442 alsa_indev_deps="alsa"
2443 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2444 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2445 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2446 fbdev_indev_deps="linux_fb_h"
2447 jack_indev_deps="libjack"
2448 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2449 libcdio_indev_deps="libcdio"
2450 libdc1394_indev_deps="libdc1394"
2451 oss_indev_deps_any="sys_soundcard_h"
2452 pulse_indev_deps="libpulse"
2453 sndio_indev_deps="sndio"
2454 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2455 vfwcap_indev_deps="vfw32 vfwcap_defines"
2456 xcbgrab_indev_deps="libxcb libxcb_shape"
2457 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2458
2459 # protocols
2460 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2461 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2462 ffrtmpcrypt_protocol_select="tcp_protocol"
2463 ffrtmphttp_protocol_conflict="librtmp_protocol"
2464 ffrtmphttp_protocol_select="http_protocol"
2465 gopher_protocol_select="network"
2466 http_protocol_select="tcp_protocol"
2467 http_protocol_suggest="zlib"
2468 httpproxy_protocol_select="tcp_protocol"
2469 httpproxy_protocol_suggest="zlib"
2470 https_protocol_select="tls_protocol"
2471 https_protocol_suggest="zlib"
2472 icecast_protocol_select="http_protocol"
2473 librtmp_protocol_deps="librtmp"
2474 librtmpe_protocol_deps="librtmp"
2475 librtmps_protocol_deps="librtmp"
2476 librtmpt_protocol_deps="librtmp"
2477 librtmpte_protocol_deps="librtmp"
2478 mmsh_protocol_select="http_protocol"
2479 mmst_protocol_select="network"
2480 rtmp_protocol_conflict="librtmp_protocol"
2481 rtmp_protocol_select="tcp_protocol"
2482 rtmp_protocol_suggest="zlib"
2483 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2484 rtmpe_protocol_suggest="zlib"
2485 rtmps_protocol_conflict="librtmp_protocol"
2486 rtmps_protocol_select="tls_protocol"
2487 rtmps_protocol_suggest="zlib"
2488 rtmpt_protocol_select="ffrtmphttp_protocol"
2489 rtmpt_protocol_suggest="zlib"
2490 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2491 rtmpte_protocol_suggest="zlib"
2492 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2493 rtmpts_protocol_suggest="zlib"
2494 rtp_protocol_select="udp_protocol"
2495 sctp_protocol_deps="struct_sctp_event_subscribe"
2496 sctp_protocol_select="network"
2497 srtp_protocol_select="rtp_protocol srtp"
2498 tcp_protocol_select="network"
2499 tls_protocol_deps_any="gnutls openssl"
2500 tls_protocol_select="tcp_protocol"
2501 udp_protocol_select="network"
2502 unix_protocol_deps="sys_un_h"
2503 unix_protocol_select="network"
2504
2505 # filters
2506 asyncts_filter_deps="avresample"
2507 blackframe_filter_deps="gpl"
2508 boxblur_filter_deps="gpl"
2509 bs2b_filter_deps="libbs2b"
2510 cropdetect_filter_deps="gpl"
2511 deinterlace_qsv_filter_deps="libmfx"
2512 deinterlace_vaapi_filter_deps="vaapi"
2513 delogo_filter_deps="gpl"
2514 drawtext_filter_deps="libfreetype"
2515 drawtext_filter_suggest="libfontconfig"
2516 frei0r_filter_deps="frei0r libdl"
2517 frei0r_src_filter_deps="frei0r libdl"
2518 hdcd_filter_deps="libhdcd"
2519 hqdn3d_filter_deps="gpl"
2520 interlace_filter_deps="gpl"
2521 movie_filter_deps="avcodec avformat"
2522 ocv_filter_deps="libopencv"
2523 overlay_qsv_filter_deps="libmfx"
2524 overlay_qsv_filter_select="qsvvpp"
2525 resample_filter_deps="avresample"
2526 scale_filter_deps="swscale"
2527 scale_qsv_filter_deps="libmfx"
2528 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2529 vpp_qsv_filter_deps="libmfx"
2530 vpp_qsv_filter_select="qsvvpp"
2531
2532 # examples
2533 decode_audio_example_deps="avcodec avutil"
2534 decode_video_example_deps="avcodec avutil"
2535 encode_audio_example_deps="avcodec avutil"
2536 encode_video_example_deps="avcodec avutil"
2537 filter_audio_example_deps="avfilter avutil"
2538 metadata_example_deps="avformat avutil"
2539 output_example_deps="avcodec avformat avresample avutil swscale"
2540 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2541 transcode_aac_example_deps="avcodec avformat avresample"
2542
2543 # EXTRALIBS_LIST
2544 cpu_init_extralibs="pthreads_extralibs"
2545 cws2fws_extralibs="zlib_extralibs"
2546
2547 # libraries, in linking order
2548 avcodec_deps="avutil"
2549 avcodec_select="null_bsf"
2550 avdevice_deps="avformat avcodec avutil"
2551 avfilter_deps="avutil"
2552 avformat_deps="avcodec avutil"
2553 avformat_suggest="network"
2554 avresample_deps="avutil"
2555 swscale_deps="avutil"
2556
2557 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2558 avdevice_extralibs="libm_extralibs"
2559 avformat_extralibs="libm_extralibs"
2560 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2561 avresample_extralibs="libm_extralibs"
2562 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2563 swscale_extralibs="libm_extralibs"
2564
2565 # programs
2566 avconv_deps="avcodec avfilter avformat avresample swscale"
2567 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2568                fps_filter null_filter resample_filter scale_filter
2569                trim_filter"
2570 avconv_suggest="psapi shell32"
2571 avplay_deps="avcodec avfilter avformat avresample sdl"
2572 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2573 avplay_suggest="shell32"
2574 avprobe_deps="avcodec avformat"
2575 avprobe_suggest="shell32"
2576
2577 # documentation
2578 pod2man_deps="doc"
2579 texi2html_deps="doc"
2580
2581 # default parameters
2582
2583 logfile="avbuild/config.log"
2584
2585 # installation paths
2586 prefix_default="/usr/local"
2587 bindir_default='${prefix}/bin'
2588 datadir_default='${prefix}/share/avconv'
2589 docdir_default='${prefix}/share/doc/libav'
2590 incdir_default='${prefix}/include'
2591 libdir_default='${prefix}/lib'
2592 mandir_default='${prefix}/share/man'
2593 shlibdir_default="$libdir_default"
2594
2595 # toolchain
2596 ar_default="ar"
2597 cc_default="gcc"
2598 host_cc_default="gcc"
2599 x86asmexe_default="nasm"
2600 ln_s="ln -s -f"
2601 nm_default="nm -g"
2602 pkg_config_default=pkg-config
2603 ranlib="ranlib"
2604 strip="strip"
2605 version_script='--version-script'
2606
2607 # machine
2608 arch_default=$(uname -m)
2609 cpu="generic"
2610 intrinsics="none"
2611
2612 # OS
2613 target_os_default=$(tolower $(uname -s))
2614 host_os=$target_os_default
2615
2616 # configurable options
2617 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2618
2619 enable asm
2620 enable debug
2621 enable doc
2622 enable faan faandct faanidct
2623 enable optimizations
2624 enable safe_bitstream_reader
2625 enable static
2626 enable swscale_alpha
2627 enable valgrind_backtrace
2628
2629 # By default, enable only those hwaccels that have no external dependencies.
2630 enable d3d11va dxva2 vda vdpau
2631
2632 # internal components are enabled by default
2633 enable $EXTRALIBS_LIST
2634
2635 # Avoid external, non-system, libraries getting enabled by dependency resolution
2636 disable $EXTERNAL_LIBRARY_LIST
2637
2638 # build settings
2639 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2640 LIBPREF="lib"
2641 LIBSUF=".a"
2642 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2643 SLIBPREF="lib"
2644 SLIBSUF=".so"
2645 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2646 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2647 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2648 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2649 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2650 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2651 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2652
2653 asflags_filter=echo
2654 cflags_filter=echo
2655 ldflags_filter=echo
2656
2657 AS_C='-c'
2658 AS_O='-o $@'
2659 CC_C='-c'
2660 CC_E='-E -o $@'
2661 CC_O='-o $@'
2662 OBJCC_C='-c'
2663 OBJCC_E='-E -o $@'
2664 OBJCC_O='-o $@'
2665 X86ASM_O='-o $@'
2666 LD_O='-o $@'
2667 LD_LIB='-l%'
2668 LD_PATH='-L'
2669 HOSTCC_C='-c'
2670 HOSTCC_E='-E -o $@'
2671 HOSTCC_O='-o $@'
2672 HOSTLD_O='-o $@'
2673
2674 host_extralibs='-lm'
2675 host_cflags_filter=echo
2676 host_ldflags_filter=echo
2677
2678 target_path='$(CURDIR)'
2679
2680 # since the object filename is not given with the -MM flag, the compiler
2681 # is only able to print the basename, and we must add the path ourselves
2682 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2683 DEPFLAGS='-MM'
2684
2685 mkdir -p avbuild
2686
2687 # find source path
2688 if test -f configure; then
2689     source_path=.
2690 else
2691     source_path=$(cd $(dirname "$0"); pwd)
2692     echo "$source_path" | grep -q '[[:blank:]]' &&
2693         die "Out of tree builds are impossible with whitespace in source path."
2694     test -e "$source_path/config.h" &&
2695         die "Out of tree builds are impossible with config.h in source dir."
2696 fi
2697
2698 for v in "$@"; do
2699     r=${v#*=}
2700     l=${v%"$r"}
2701     r=$(sh_quote "$r")
2702     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2703 done
2704
2705 find_things(){
2706     thing=$1
2707     pattern=$2
2708     file=$source_path/$3
2709     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2710 }
2711
2712 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2713 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2714 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2715 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2716 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2717 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2718 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2719 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2720
2721 find_things_extern(){
2722     thing=$1
2723     pattern=$2
2724     file=$source_path/$3
2725     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2726 }
2727
2728 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2729 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2730
2731 AVCODEC_COMPONENTS_LIST="
2732     $BSF_LIST
2733     $DECODER_LIST
2734     $ENCODER_LIST
2735     $HWACCEL_LIST
2736     $PARSER_LIST
2737 "
2738
2739 AVDEVICE_COMPONENTS_LIST="
2740     $INDEV_LIST
2741 "
2742
2743 AVFILTER_COMPONENTS_LIST="
2744     $FILTER_LIST
2745 "
2746
2747 AVFORMAT_COMPONENTS_LIST="
2748     $DEMUXER_LIST
2749     $MUXER_LIST
2750     $PROTOCOL_LIST
2751 "
2752
2753 ALL_COMPONENTS="
2754     $AVCODEC_COMPONENTS_LIST
2755     $AVDEVICE_COMPONENTS_LIST
2756     $AVFILTER_COMPONENTS_LIST
2757     $AVFORMAT_COMPONENTS_LIST
2758 "
2759
2760 for n in $COMPONENT_LIST; do
2761     v=$(toupper ${n%s})_LIST
2762     eval enable \$$v
2763     eval ${n}_if_any="\$$v"
2764 done
2765
2766 enable $ARCH_EXT_LIST
2767
2768 die_unknown(){
2769     echo "Unknown option \"$1\"."
2770     echo "See $0 --help for available options."
2771     exit 1
2772 }
2773
2774 print_3_columns() {
2775     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2776 }
2777
2778 show_list() {
2779     suffix=_$1
2780     shift
2781     echo $* | sed s/$suffix//g | print_3_columns
2782     exit 0
2783 }
2784
2785 for opt do
2786     optval="${opt#*=}"
2787     case "$opt" in
2788         --extra-ldflags=*)
2789             add_ldflags $optval
2790         ;;
2791         --extra-ldexeflags=*)
2792             add_ldexeflags $optval
2793         ;;
2794         --extra-ldsoflags=*)
2795             add_ldsoflags $optval
2796         ;;
2797         --extra-libs=*)
2798             add_extralibs $optval
2799         ;;
2800         --disable-devices)
2801             disable $INDEV_LIST
2802         ;;
2803         --enable-debug=*)
2804             debuglevel="$optval"
2805         ;;
2806         --disable-programs)
2807             disable $PROGRAM_LIST
2808         ;;
2809         --disable-everything)
2810             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2811         ;;
2812         --disable-all)
2813             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2814             disable $LIBRARY_LIST $PROGRAM_LIST doc
2815         ;;
2816         --enable-*=*|--disable-*=*)
2817             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2818             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2819             eval list=\$$(toupper $thing)_LIST
2820             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2821             $action $(filter "$name" $list)
2822         ;;
2823         --enable-yasm|--disable-yasm)
2824             warn "The ${opt} option is only provided for compatibility and will be\n"\
2825                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2826             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2827         ;;
2828         --enable-?*|--disable-?*)
2829             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2830             if is_in $option $COMPONENT_LIST; then
2831                 test $action = disable && action=unset
2832                 eval $action \$$(toupper ${option%s})_LIST
2833             elif is_in $option $CMDLINE_SELECT; then
2834                 $action $option
2835             else
2836                 die_unknown $opt
2837             fi
2838         ;;
2839         --list-*)
2840             NAME="${opt#--list-}"
2841             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2842             NAME=${NAME%s}
2843             eval show_list $NAME \$$(toupper $NAME)_LIST
2844         ;;
2845         --help|-h) show_help
2846         ;;
2847         --quiet|-q) quiet=yes
2848         ;;
2849         *)
2850             optname="${opt%%=*}"
2851             optname="${optname#--}"
2852             optname=$(echo "$optname" | sed 's/-/_/g')
2853             if is_in $optname $CMDLINE_SET; then
2854                 eval $optname='$optval'
2855             elif is_in $optname $CMDLINE_APPEND; then
2856                 append $optname "$optval"
2857             else
2858                 die_unknown $opt
2859             fi
2860         ;;
2861     esac
2862 done
2863
2864 for e in $env; do
2865     eval "export $e"
2866 done
2867
2868 disabled logging && logfile=/dev/null
2869
2870 # we need to build at least one lib type
2871 if ! enabled_any static shared; then
2872     cat <<EOF
2873 At least one library type must be built.
2874 Specify --enable-static to build the static libraries or --enable-shared to
2875 build the shared libraries as well. To only build the shared libraries specify
2876 --disable-static in addition to --enable-shared.
2877 EOF
2878     exit 1
2879 fi
2880
2881 # Die early if licensing-related configure options are incompatible.
2882 die_license_disabled() {
2883     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2884 }
2885
2886 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2887 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2888 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2889
2890 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2891
2892 enabled_all gnutls openssl &&
2893     die "GnuTLS and OpenSSL must not be enabled at the same time."
2894
2895 # Disable all the library-specific components if the library itself
2896 # is disabled, see AVCODEC_LIST and following _LIST variables.
2897
2898 disable_components(){
2899     disabled ${1} && disable $(
2900         eval components="\$$(toupper ${1})_COMPONENTS"
2901         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2902     )
2903 }
2904
2905 map 'disable_components $v' $LIBRARY_LIST
2906
2907 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2908 set >> $logfile
2909
2910 case "$toolchain" in
2911     *-asan)
2912         cc_default="${toolchain%-asan}"
2913         add_cflags  -fsanitize=address
2914         add_ldflags -fsanitize=address
2915     ;;
2916     *-msan)
2917         cc_default="${toolchain%-msan}"
2918         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2919         add_ldflags -fsanitize=memory
2920     ;;
2921     *-tsan)
2922         cc_default="${toolchain%-tsan}"
2923         add_cflags  -fsanitize=thread -fPIE
2924         add_ldflags -fsanitize=thread -pie
2925         case "$toolchain" in
2926             gcc-tsan)
2927                 add_cflags  -fPIC
2928                 add_ldflags -fPIC
2929                 ;;
2930         esac
2931     ;;
2932     *-usan)
2933         cc_default="${toolchain%-usan}"
2934         add_cflags  -fsanitize=undefined
2935         add_ldflags -fsanitize=undefined
2936         case "$toolchain" in
2937             clang-usan)
2938                 add_cflags -O1
2939                 ;;
2940         esac
2941     ;;
2942     valgrind-*)
2943         target_exec_default="valgrind"
2944         case "$toolchain" in
2945             valgrind-massif)
2946                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2947                 ;;
2948             valgrind-memcheck)
2949                 target_exec_args="--track-origins=yes --leak-check=full"
2950                 ;;
2951         esac
2952     ;;
2953     msvc)
2954         # Check whether the current MSVC version needs the C99 converter.
2955         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2956         # support enough of C99 to build libav. Default to the new
2957         # behaviour if the regexp was unable to match anything, since this
2958         # successfully parses the version number of existing supported
2959         # versions that require the converter (MSVC 2010 and 2012).
2960         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2961         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2962             cc_default="cl"
2963         else
2964             cc_default="c99wrap cl"
2965         fi
2966         ld_default="$source_path/compat/windows/mslink"
2967         nm_default="dumpbin -symbols"
2968         ar_default="lib"
2969         case "$arch" in
2970         aarch64|arm64)
2971             as_default="armasm64"
2972             ;;
2973         arm*)
2974             as_default="armasm"
2975             ;;
2976         esac
2977         target_os_default="win32"
2978         # Use a relative path for TMPDIR. This makes sure all the
2979         # ffconf temp files are written with a relative path, avoiding
2980         # issues with msys/win32 path conversion for MSVC parameters
2981         # such as -Fo<file> or -out:<file>.
2982         TMPDIR=.
2983     ;;
2984     icl)
2985         cc_default="icl"
2986         ld_default="xilink"
2987         nm_default="dumpbin -symbols"
2988         ar_default="xilib"
2989         target_os_default="win32"
2990         TMPDIR=.
2991     ;;
2992     gcov)
2993         add_cflags  -fprofile-arcs -ftest-coverage
2994         add_ldflags -fprofile-arcs -ftest-coverage
2995     ;;
2996     llvm-cov)
2997         add_cflags -fprofile-arcs -ftest-coverage
2998         add_ldflags --coverage
2999     ;;
3000     hardened)
3001         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3002         add_cflags   -fno-strict-overflow -fstack-protector-all
3003         add_ldflags  -Wl,-z,relro -Wl,-z,now
3004     ;;
3005     ?*)
3006         die "Unknown toolchain $toolchain"
3007     ;;
3008 esac
3009
3010 test -n "$cross_prefix" && enable cross_compile
3011
3012 if enabled cross_compile; then
3013     test -n "$arch" && test -n "$target_os" ||
3014         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3015 fi
3016
3017 ar_default="${cross_prefix}${ar_default}"
3018 cc_default="${cross_prefix}${cc_default}"
3019 objcc_default="${cross_prefix}${objcc_default}"
3020 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3021 nm_default="${cross_prefix}${nm_default}"
3022 pkg_config_default="${cross_prefix}${pkg_config_default}"
3023 ranlib="${cross_prefix}${ranlib}"
3024 strip="${cross_prefix}${strip}"
3025
3026 sysinclude_default="${sysroot}/usr/include"
3027
3028 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3029 enabled cross_compile || host_cc_default=$cc
3030 set_default host_cc
3031
3032 if ! $pkg_config --version >/dev/null 2>&1; then
3033     warn "$pkg_config not found, library detection may fail."
3034     pkg_config=false
3035 fi
3036
3037 exesuf() {
3038     case $1 in
3039         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3040     esac
3041 }
3042
3043 EXESUF=$(exesuf $target_os)
3044 HOSTEXESUF=$(exesuf $host_os)
3045
3046 # set temporary file name
3047 : ${TMPDIR:=$TEMPDIR}
3048 : ${TMPDIR:=$TMP}
3049 : ${TMPDIR:=/tmp}
3050
3051 if ! check_cmd mktemp -u XXXXXX; then
3052     # simple replacement for missing mktemp
3053     # NOT SAFE FOR GENERAL USE
3054     mktemp(){
3055         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3056         echo "$tmpname"
3057         mkdir "$tmpname"
3058     }
3059 fi
3060
3061 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3062     die "Unable to create temporary directory in $TMPDIR."
3063
3064 tmpfile(){
3065     tmp="${AVTMPDIR}/test"$2
3066     (set -C; exec > $tmp) 2> /dev/null ||
3067         die "Unable to create temporary file in $AVTMPDIR."
3068     eval $1=$tmp
3069 }
3070
3071 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3072 trap 'exit 2' INT
3073
3074 tmpfile TMPASM .asm
3075 tmpfile TMPC   .c
3076 tmpfile TMPE   $EXESUF
3077 tmpfile TMPH   .h
3078 tmpfile TMPO   .o
3079 tmpfile TMPS   .S
3080 tmpfile TMPSH  .sh
3081 tmpfile TMPV   .ver
3082
3083 unset -f mktemp
3084
3085 chmod +x $TMPE
3086
3087 # make sure we can execute files in $TMPDIR
3088 cat > $TMPSH 2>> $logfile <<EOF
3089 #! /bin/sh
3090 EOF
3091 chmod +x $TMPSH >> $logfile 2>&1
3092 if ! $TMPSH >> $logfile 2>&1; then
3093     cat <<EOF
3094 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3095 variable to another directory and make sure that it is not mounted noexec.
3096 EOF
3097     die "Sanity test failed."
3098 fi
3099
3100 armasm_flags(){
3101     for flag; do
3102         case $flag in
3103             # Filter out MSVC cl.exe options from cflags that shouldn't
3104             # be passed to gas-preprocessor
3105             -M[TD]*)                                            ;;
3106             *)                  echo $flag                      ;;
3107         esac
3108    done
3109 }
3110
3111 cparser_flags(){
3112     for flag; do
3113         case $flag in
3114             -Wno-switch)             echo -Wno-switch-enum ;;
3115             -Wno-format-zero-length) ;;
3116             -Wdisabled-optimization) ;;
3117             -Wno-pointer-sign)       echo -Wno-other ;;
3118             *)                       echo $flag ;;
3119         esac
3120     done
3121 }
3122
3123 msvc_common_flags(){
3124     for flag; do
3125         case $flag in
3126             # In addition to specifying certain flags under the compiler
3127             # specific filters, they must be specified here as well or else the
3128             # generic catch all at the bottom will print the original flag.
3129             -Wall)                ;;
3130             -Wextra)              ;;
3131             -std=c99)             ;;
3132             # Common flags
3133             -fomit-frame-pointer) ;;
3134             -g)                   echo -Z7 ;;
3135             -fno-math-errno)      ;;
3136             -fno-common)          ;;
3137             -fno-signed-zeros)    ;;
3138             -fPIC)                ;;
3139             -mthumb)              ;;
3140             -march=*)             ;;
3141             -lz)                  echo zlib.lib ;;
3142             -lx264)               echo libx264.lib ;;
3143             -l*)                  echo ${flag#-l}.lib ;;
3144             -L*)                  echo -libpath:${flag#-L} ;;
3145             *)                    echo $flag ;;
3146         esac
3147     done
3148 }
3149
3150 msvc_flags(){
3151     msvc_common_flags "$@"
3152     for flag; do
3153         case $flag in
3154             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3155                                        -wd4554 ;;
3156             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3157                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3158                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3159                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3160         esac
3161     done
3162 }
3163
3164 icl_flags(){
3165     msvc_common_flags "$@"
3166     for flag; do
3167         case $flag in
3168             # Despite what Intel's documentation says -Wall, which is supported
3169             # on Windows, does enable remarks so disable them here.
3170             -Wall)                echo $flag -Qdiag-disable:remark ;;
3171             -std=c99)             echo -Qstd=c99 ;;
3172         esac
3173     done
3174 }
3175
3176 suncc_flags(){
3177     for flag; do
3178         case $flag in
3179             -march=*|-mcpu=*)
3180                 case "${flag#*=}" in
3181                     native)                   echo -xtarget=native       ;;
3182                     v9|niagara)               echo -xarch=sparc          ;;
3183                     ultrasparc)               echo -xarch=sparcvis       ;;
3184                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3185                     i586|pentium)             echo -xchip=pentium        ;;
3186                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3187                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3188                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3189                     pentium4*)          echo -xtarget=pentium4           ;;
3190                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3191                     *-sse3)             echo -xarch=sse3                 ;;
3192                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3193                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3194                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3195                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3196                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3197                     k8|opteron|athlon64|athlon-fx)
3198                                                echo -xarch=sse2a         ;;
3199                     athlon*)                   echo -xarch=pentium_proa  ;;
3200                 esac
3201                 ;;
3202             -std=c99)             echo -xc99              ;;
3203             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3204             -fPIC)                echo -KPIC -xcode=pic32 ;;
3205             -W*,*)                echo $flag              ;;
3206             -f*-*|-W*|-mimpure-text)                      ;;
3207             -shared)              echo -G                 ;;
3208             *)                    echo $flag              ;;
3209         esac
3210     done
3211 }
3212
3213 probe_cc(){
3214     pfx=$1
3215     _cc=$2
3216
3217     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3218     unset _ld_o _ldflags _ld_lib _ld_path
3219     unset _depflags _DEPCMD _DEPFLAGS
3220     _flags_filter=echo
3221
3222     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3223         _type=llvm_gcc
3224         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3225         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3227         _cflags_speed='-O3'
3228         _cflags_size='-Os'
3229     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3230         _type=gcc
3231         gcc_version=$($_cc --version | head -n1)
3232         gcc_basever=$($_cc -dumpversion)
3233         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3234         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3235         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3236         if ! $_cc -dumpversion | grep -q '^2\.'; then
3237             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3238         fi
3239         _cflags_speed='-O3'
3240         _cflags_size='-Os'
3241     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3242         _type=icc
3243         _ident=$($_cc --version | head -n1)
3244         _depflags='-MMD'
3245         _cflags_speed='-O3'
3246         _cflags_size='-Os'
3247         _cflags_noopt='-O1'
3248     elif $_cc -v 2>&1 | grep -q xlc; then
3249         _type=xlc
3250         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3251         _cflags_speed='-O5'
3252         _cflags_size='-O5 -qcompact'
3253     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3254         test -d "$sysroot" || die "No valid sysroot specified."
3255         _type=armcc
3256         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3257         armcc_conf="$PWD/armcc.conf"
3258         $_cc --arm_linux_configure                 \
3259              --arm_linux_config_file="$armcc_conf" \
3260              --configure_sysroot="$sysroot"        \
3261              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3262              die "Error creating armcc configuration file."
3263         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3264         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3265         as_default="${cross_prefix}gcc"
3266         _depflags='-MMD'
3267         _cflags_speed='-O3'
3268         _cflags_size='-Os'
3269     elif $_cc -v 2>&1 | grep -q clang; then
3270         _type=clang
3271         _ident=$($_cc --version 2>/dev/null | head -n1)
3272         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3273         _cflags_speed='-O3'
3274         _cflags_size='-Os'
3275     elif $_cc -V 2>&1 | grep -q Sun; then
3276         _type=suncc
3277         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3278         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3279         _DEPFLAGS='-xM1 -xc99'
3280         _ldflags='-std=c99'
3281         _cflags_speed='-O5'
3282         _cflags_size='-O5 -xspace'
3283         _flags_filter=suncc_flags
3284     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3285         _type=pathscale
3286         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3287         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3288         _cflags_speed='-O2'
3289         _cflags_size='-Os'
3290         _flags_filter='filter_out -Wdisabled-optimization'
3291     elif $_cc -v 2>&1 | grep -q Open64; then
3292         _type=open64
3293         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3294         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3295         _cflags_speed='-O2'
3296         _cflags_size='-Os'
3297         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3298     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3299         _type=armasm
3300         _ident=$($_cc | head -n1)
3301         # 4509: "This form of conditional instruction is deprecated"
3302         _flags="-nologo -ignore 4509"
3303         _flags_filter=armasm_flags
3304     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3305         _type=msvc
3306         _ident=$($_cc 2>&1 | head -n1)
3307         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3308         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3309         _cflags_speed="-O2"
3310         _cflags_size="-O1"
3311         _cflags_noopt="-O1"
3312         if $_cc -nologo- 2>&1 | grep -q Linker; then
3313             _ld_o='-out:$@'
3314         else
3315             _ld_o='-Fe$@'
3316         fi
3317         _cc_o='-Fo$@'
3318         _cc_e='-P -Fi$@'
3319         _flags_filter=msvc_flags
3320         _ld_lib='lib%.a'
3321         _ld_path='-libpath:'
3322         _flags='-nologo'
3323     elif $_cc 2>&1 | grep -q Intel; then
3324         _type=icl
3325         _ident=$($_cc 2>&1 | head -n1)
3326         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3327         # Not only is O3 broken on 13.x+ but it is slower on all previous
3328         # versions (tested) as well.
3329         _cflags_speed="-O2"
3330         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3331         if $_cc 2>&1 | grep -q Linker; then
3332             _ld_o='-out:$@'
3333         else
3334             _ld_o='-Fe$@'
3335         fi
3336         _cc_o='-Fo$@'
3337         _cc_e='-P'
3338         _flags_filter=icl_flags
3339         _ld_lib='lib%.a'
3340         _ld_path='-libpath:'
3341         # -Qdiag-error to make icl error when seeing certain unknown arguments
3342         _flags='-nologo -Qdiag-error:4044,10157'
3343         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3344         # with MSVC which enables it by default.
3345         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3346     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3347         # lld can emulate multiple different linkers; in ms link.exe mode,
3348         # the -? parameter gives the help output which contains an identifyable
3349         # string, while it gives an error in other modes.
3350         _type=lld-link
3351         # The link.exe mode doesn't have a switch for getting the version,
3352         # but we can force it back to gnu mode and get the version from there.
3353         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3354         _ld_o='-out:$@'
3355         _flags_filter=msvc_flags
3356         _ld_lib='lib%.a'
3357         _ld_path='-libpath:'
3358     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3359         _type=cparser
3360         _ident=$($_cc --version | head -n1)
3361         _depflags='-MMD'
3362         _cflags_speed='-O4'
3363         _cflags_size='-O2'
3364         _flags_filter=cparser_flags
3365     fi
3366
3367     eval ${pfx}_type=\$_type
3368     eval ${pfx}_ident=\$_ident
3369 }
3370
3371 set_ccvars(){
3372     eval ${1}_C=\${_cc_c-\${${1}_C}}
3373     eval ${1}_E=\${_cc_e-\${${1}_E}}
3374     eval ${1}_O=\${_cc_o-\${${1}_O}}
3375
3376     if [ -n "$_depflags" ]; then
3377         eval ${1}_DEPFLAGS=\$_depflags
3378     else
3379         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3380         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3381         eval DEP${1}FLAGS=\$_flags
3382     fi
3383 }
3384
3385 probe_cc cc "$cc"
3386 cflags_filter=$_flags_filter
3387 cflags_speed=$_cflags_speed
3388 cflags_size=$_cflags_size
3389 cflags_noopt=$_cflags_noopt
3390 add_cflags $_flags $_cflags
3391 cc_ldflags=$_ldflags
3392 set_ccvars CC
3393
3394 probe_cc hostcc "$host_cc"
3395 host_cflags_filter=$_flags_filter
3396 host_cflags_speed=$_cflags_speed
3397 add_host_cflags  $_flags $_cflags
3398 set_ccvars HOSTCC
3399
3400 test -n "$cc_type" && enable $cc_type ||
3401     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3402
3403 : ${as_default:=$cc}
3404 : ${objcc_default:=$cc}
3405 : ${dep_cc_default:=$cc}
3406 : ${ld_default:=$cc}
3407 : ${host_ld_default:=$host_cc}
3408 set_default ar as objcc dep_cc ld host_ld
3409
3410 probe_cc as "$as"
3411 asflags_filter=$_flags_filter
3412 add_asflags $_flags $_cflags
3413 set_ccvars AS
3414
3415 probe_cc objcc "$objcc"
3416 objcflags_filter=$_flags_filter
3417 add_objcflags $_flags $_cflags
3418 set_ccvars OBJC
3419
3420 probe_cc ld "$ld"
3421 ldflags_filter=$_flags_filter
3422 add_ldflags $_flags $_ldflags
3423 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3424 LD_O=${_ld_o-$LD_O}
3425 LD_LIB=${_ld_lib-$LD_LIB}
3426 LD_PATH=${_ld_path-$LD_PATH}
3427
3428 probe_cc hostld "$host_ld"
3429 host_ldflags_filter=$_flags_filter
3430 add_host_ldflags $_flags $_ldflags
3431 HOSTLD_O=${_ld_o-$HOSTLD_O}
3432
3433 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3434     probe_cc depcc "$dep_cc"
3435     CCDEP=${_DEPCMD:-$DEPCMD}
3436     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3437     DEPCCFLAGS=$_flags
3438 fi
3439
3440 if $ar 2>&1 | grep -q Microsoft; then
3441     arflags="-nologo"
3442     ar_o='-out:$@'
3443 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3444     arflags='-Xany -r -c'
3445     ar_o='$@'
3446 else
3447     arflags="rc"
3448     ar_o='$@'
3449 fi
3450
3451 add_cflags $extra_cflags
3452 add_objcflags $extra_objcflags
3453 add_asflags $extra_cflags
3454
3455 if test -n "$sysroot"; then
3456     case "$cc_type" in
3457         gcc|llvm_gcc|clang)
3458             add_cppflags --sysroot="$sysroot"
3459             add_ldflags --sysroot="$sysroot"
3460         ;;
3461     esac
3462 fi
3463
3464 if test "$cpu" = host; then
3465     enabled cross_compile &&
3466         die "--cpu=host makes no sense when cross-compiling."
3467
3468     case "$cc_type" in
3469         gcc|llvm_gcc)
3470             check_native(){
3471                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3472                 sed -n "/cc1.*$1=/{
3473                             s/.*$1=\\([^ ]*\\).*/\\1/
3474                             p
3475                             q
3476                         }" $TMPE
3477             }
3478             cpu=$(check_native -march || check_native -mcpu)
3479         ;;
3480     esac
3481
3482     test "${cpu:-host}" = host &&
3483         die "--cpu=host not supported with compiler $cc"
3484 fi
3485
3486 # Deal with common $arch aliases
3487 case "$arch" in
3488     aarch64|arm64)
3489         arch="aarch64"
3490     ;;
3491     arm*)
3492         arch="arm"
3493     ;;
3494     mips*|IP*)
3495         case "$arch" in
3496         *el)
3497             add_cppflags -EL
3498             add_ldflags -EL
3499         ;;
3500         *eb)
3501             add_cppflags -EB
3502             add_ldflags -EB
3503         ;;
3504         esac
3505         arch="mips"
3506     ;;
3507     parisc*|hppa*)
3508         arch="parisc"
3509     ;;
3510     "Power Macintosh"|ppc*|powerpc*)
3511         arch="ppc"
3512     ;;
3513     s390|s390x)
3514         arch="s390"
3515     ;;
3516     sh4|sh)
3517         arch="sh4"
3518     ;;
3519     sun4u|sparc*)
3520         arch="sparc"
3521     ;;
3522     tilegx|tile-gx)
3523         arch="tilegx"
3524     ;;
3525     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3526         arch="x86"
3527     ;;
3528 esac
3529
3530 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3531 enable $arch
3532
3533 # Add processor-specific flags
3534 if enabled aarch64; then
3535
3536     case $cpu in
3537         armv*)
3538             cpuflags="-march=$cpu"
3539         ;;
3540         *)
3541             cpuflags="-mcpu=$cpu"
3542         ;;
3543     esac
3544
3545 elif enabled alpha; then
3546
3547     cpuflags="-mcpu=$cpu"
3548
3549 elif enabled arm; then
3550
3551     check_arm_arch() {
3552         check_cpp_condition stddef.h \
3553             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3554             $cpuflags
3555     }
3556
3557     probe_arm_arch() {
3558         if   check_arm_arch 4;        then echo armv4
3559         elif check_arm_arch 4T;       then echo armv4t
3560         elif check_arm_arch 5;        then echo armv5
3561         elif check_arm_arch 5E;       then echo armv5e
3562         elif check_arm_arch 5T;       then echo armv5t
3563         elif check_arm_arch 5TE;      then echo armv5te
3564         elif check_arm_arch 5TEJ;     then echo armv5te
3565         elif check_arm_arch 6;        then echo armv6
3566         elif check_arm_arch 6J;       then echo armv6j
3567         elif check_arm_arch 6K;       then echo armv6k
3568         elif check_arm_arch 6Z;       then echo armv6z
3569         elif check_arm_arch 6ZK;      then echo armv6zk
3570         elif check_arm_arch 6T2;      then echo armv6t2
3571         elif check_arm_arch 7;        then echo armv7
3572         elif check_arm_arch 7A  7_A;  then echo armv7-a
3573         elif check_arm_arch 7S;       then echo armv7-a
3574         elif check_arm_arch 7R  7_R;  then echo armv7-r
3575         elif check_arm_arch 7M  7_M;  then echo armv7-m
3576         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3577         elif check_arm_arch 8A  8_A;  then echo armv8-a
3578         fi
3579     }
3580
3581     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3582
3583     case $cpu in
3584         armv*)
3585             cpuflags="-march=$cpu"
3586             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3587         ;;
3588         *)
3589             cpuflags="-mcpu=$cpu"
3590             case $cpu in
3591                 cortex-a*)                               subarch=armv7a  ;;
3592                 cortex-r*)                               subarch=armv7r  ;;
3593                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3594                 arm11*)                                  subarch=armv6   ;;
3595                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3596                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3597                 *)                             subarch=$(probe_arm_arch) ;;
3598             esac
3599         ;;
3600     esac
3601
3602     case "$subarch" in
3603         armv5t*)    enable fast_clz                ;;
3604         armv[6-8]*) enable fast_clz fast_unaligned ;;
3605     esac
3606
3607 elif enabled avr32; then
3608
3609     case $cpu in
3610         ap7[02]0[0-2])
3611             subarch="avr32_ap"
3612             cpuflags="-mpart=$cpu"
3613         ;;
3614         ap)
3615             subarch="avr32_ap"
3616             cpuflags="-march=$cpu"
3617         ;;
3618         uc3[ab]*)
3619             subarch="avr32_uc"
3620             cpuflags="-mcpu=$cpu"
3621         ;;
3622         uc)
3623             subarch="avr32_uc"
3624             cpuflags="-march=$cpu"
3625         ;;
3626     esac
3627
3628 elif enabled bfin; then
3629
3630     cpuflags="-mcpu=$cpu"
3631
3632 elif enabled mips; then
3633
3634     cpuflags="-march=$cpu"
3635
3636 elif enabled ppc; then
3637
3638     disable ldbrx
3639
3640     case $(tolower $cpu) in
3641         601|ppc601|powerpc601)
3642             cpuflags="-mcpu=601"
3643             disable altivec
3644         ;;
3645         603*|ppc603*|powerpc603*)
3646             cpuflags="-mcpu=603"
3647             disable altivec
3648         ;;
3649         604*|ppc604*|powerpc604*)
3650             cpuflags="-mcpu=604"
3651             disable altivec
3652         ;;
3653         g3|75*|ppc75*|powerpc75*)
3654             cpuflags="-mcpu=750"
3655             disable altivec
3656         ;;
3657         g4|745*|ppc745*|powerpc745*)
3658             cpuflags="-mcpu=7450"
3659             disable vsx
3660         ;;
3661         74*|ppc74*|powerpc74*)
3662             cpuflags="-mcpu=7400"
3663             disable vsx
3664         ;;
3665         g5|970|ppc970|powerpc970)
3666             cpuflags="-mcpu=970"
3667             disable vsx
3668         ;;
3669         power[3-6]*)
3670             cpuflags="-mcpu=$cpu"
3671             disable vsx
3672         ;;
3673         power[7-8]*)
3674             cpuflags="-mcpu=$cpu"
3675             enable ldbrx
3676         ;;
3677         cell)
3678             cpuflags="-mcpu=cell"
3679             enable ldbrx
3680             disable vsx
3681         ;;
3682         e500mc)
3683             cpuflags="-mcpu=e500mc"
3684             disable altivec
3685         ;;
3686         e500v2)
3687             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3688             disable altivec
3689             disable dcbzl
3690         ;;
3691         e500)
3692             cpuflags="-mcpu=8540 -mhard-float"
3693             disable altivec
3694             disable dcbzl
3695         ;;
3696     esac
3697
3698 elif enabled sparc; then
3699
3700     case $cpu in
3701         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3702             cpuflags="-mcpu=$cpu"
3703         ;;
3704         ultrasparc*|niagara[234])
3705             cpuflags="-mcpu=$cpu"
3706         ;;
3707     esac
3708
3709 elif enabled x86; then
3710
3711     case $cpu in
3712         i[345]86|pentium)
3713             cpuflags="-march=$cpu"
3714             disable i686
3715             disable mmx
3716         ;;
3717         # targets that do NOT support nopl and conditional mov (cmov)
3718         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3719             cpuflags="-march=$cpu"
3720             disable i686
3721         ;;
3722         # targets that do support nopl and conditional mov (cmov)
3723         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3724             cpuflags="-march=$cpu"
3725             enable i686
3726             enable fast_cmov
3727         ;;
3728         # targets that do support conditional mov but on which it's slow
3729         pentium4|pentium4m|prescott|nocona)
3730             cpuflags="-march=$cpu"
3731             enable i686
3732             disable fast_cmov
3733         ;;
3734     esac
3735
3736 fi
3737
3738 if [ "$cpu" != generic ]; then
3739     add_cflags  $cpuflags
3740     add_asflags $cpuflags
3741     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3742 fi
3743
3744 # compiler sanity check
3745 check_exec <<EOF
3746 int main(void){ return 0; }
3747 EOF
3748 if test "$?" != 0; then
3749     echo "$cc is unable to create an executable file."
3750     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3751         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3752         echo "Only do this if you know what cross compiling means."
3753     fi
3754     die "C compiler test failed."
3755 fi
3756
3757 add_cppflags -D_ISOC99_SOURCE
3758
3759 # some compilers silently accept -std=c11, so we also need to check that the
3760 # version macro is defined properly
3761 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3762     add_cflags -std=c11 ||
3763     check_cflags -std=c99
3764
3765 check_cppflags -D_FILE_OFFSET_BITS=64
3766 check_cppflags -D_LARGEFILE_SOURCE
3767
3768 add_host_cppflags -D_ISOC99_SOURCE
3769 check_host_cflags -std=c99
3770 check_host_cflags -Wall
3771 check_host_cflags $host_cflags_speed
3772
3773 check_64bit(){
3774     arch32=$1
3775     arch64=$2
3776     expr=$3
3777     check_code cc "" "int test[2*($expr) - 1]" &&
3778         subarch=$arch64 || subarch=$arch32
3779 }
3780
3781 case "$arch" in
3782     aarch64|alpha|ia64)
3783         spic=$shared
3784     ;;
3785     mips)
3786         check_64bit mips mips64 '_MIPS_SIM > 1'
3787         spic=$shared
3788     ;;
3789     parisc)
3790         check_64bit parisc parisc64 'sizeof(void *) > 4'
3791         spic=$shared
3792     ;;
3793     ppc)
3794         check_64bit ppc ppc64 'sizeof(void *) > 4'
3795         spic=$shared
3796     ;;
3797     s390)
3798         check_64bit s390 s390x 'sizeof(void *) > 4'
3799         spic=$shared
3800     ;;
3801     sparc)
3802         check_64bit sparc sparc64 'sizeof(void *) > 4'
3803         spic=$shared
3804     ;;
3805     x86)
3806         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3807         if test "$subarch" = "x86_64"; then
3808             spic=$shared
3809         fi
3810     ;;
3811 esac
3812
3813 enable $subarch
3814 enabled spic && enable_weak pic
3815
3816 enabled x86_64 && objformat=elf64 || objformat="elf32"
3817
3818 # OS specific
3819 case $target_os in
3820     aix)
3821         SHFLAGS=-shared
3822         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3823         enabled shared && add_ldflags -Wl,-brtl
3824         ;;
3825     android)
3826         disable symver
3827         enable section_data_rel_ro
3828         SLIB_INSTALL_NAME='$(SLIBNAME)'
3829         SLIB_INSTALL_LINKS=
3830         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3831         ;;
3832     haiku)
3833         prefix_default="/boot/common"
3834         network_extralibs="-lnetwork"
3835         host_extralibs=
3836         ;;
3837     sunos)
3838         SHFLAGS='-shared -Wl,-h,$$(@F)'
3839         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3840         network_extralibs="-lsocket -lnsl"
3841         # When using suncc to build, the Solaris linker will mark
3842         # an executable with each instruction set encountered by
3843         # the Solaris assembler.  As our libraries contain their own
3844         # guards for processor-specific code, instead suppress
3845         # generation of the HWCAPS ELF section on Solaris x86 only.
3846         enabled_all suncc x86 &&
3847             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3848             add_ldflags -Wl,-M,mapfile
3849         nm_default='nm -P -g'
3850         version_script='-M'
3851         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3852         ;;
3853     netbsd)
3854         disable symver
3855         oss_indev_extralibs="-lossaudio"
3856         ;;
3857     openbsd|bitrig)
3858         disable symver
3859         SHFLAGS='-shared'
3860         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3861         SLIB_INSTALL_LINKS=
3862         oss_indev_extralibs="-lossaudio"
3863         ;;
3864     dragonfly)
3865         disable symver
3866         ;;
3867     freebsd)
3868         ;;
3869     bsd/os)
3870         add_extralibs -lpoll -lgnugetopt
3871         ;;
3872     darwin)
3873         enabled ppc && add_asflags -force_cpusubtype_ALL
3874         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3875         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3876         add_ldflags -Wl,-dynamic,-search_paths_first
3877         check_cflags -Werror=partial-availability
3878         SLIBSUF=".dylib"
3879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3881         enabled x86_64 && objformat="macho64" || objformat="macho32"
3882         enabled_any pic shared ||
3883             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3884         check_header dispatch/dispatch.h &&
3885             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3886         if test -n "$sysroot"; then
3887             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3888             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3889         fi
3890         ;;
3891     msys*)
3892         die "Native MSYS builds are discouraged, please use the MINGW environment."
3893         ;;
3894     mingw32*|mingw64*)
3895         target_os=mingw32
3896         if enabled shared; then
3897             # Cannot build both shared and static libs when using dllexport.
3898             disable static
3899         fi
3900         check_ldflags -Wl,--nxcompat
3901         check_ldflags -Wl,--dynamicbase
3902         shlibdir_default="$bindir_default"
3903         SLIBPREF=""
3904         SLIBSUF=".dll"
3905         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3906         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3907         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3908         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3909         SLIB_INSTALL_LINKS=
3910         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3911         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3912         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3913         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3914         enabled x86_64 && objformat="win64" || objformat="win32"
3915         ranlib=:
3916         enable dos_paths
3917         ;;
3918     win32|win64)
3919         disable symver
3920         if enabled shared; then
3921             # Link to the import library instead of the normal static library
3922             # for shared libs.
3923             LD_LIB='%.lib'
3924             # Cannot build both shared and static libs with MSVC or icl.
3925             disable static
3926         fi
3927         shlibdir_default="$bindir_default"
3928         SLIBPREF=""
3929         SLIBSUF=".dll"
3930         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3931         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3932         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3933         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3934         SLIB_INSTALL_LINKS=
3935         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3936         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3937         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3938         enabled x86_64 && objformat="win64" || objformat="win32"
3939         ranlib=:
3940         enable dos_paths
3941         ;;
3942     cygwin*)
3943         target_os=cygwin
3944         shlibdir_default="$bindir_default"
3945         SLIBPREF="cyg"
3946         SLIBSUF=".dll"
3947         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3948         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3949         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3950         SLIB_INSTALL_LINKS=
3951         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3952         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3953         enabled x86_64 && objformat="win64" || objformat="win32"
3954         enable dos_paths
3955         ;;
3956     *-dos|freedos|opendos)
3957         network_extralibs="-lsocket"
3958         objformat="coff"
3959         enable dos_paths
3960         add_cppflags -U__STRICT_ANSI__
3961         ;;
3962     linux)
3963         enable section_data_rel_ro
3964         ;;
3965     irix*)
3966         target_os=irix
3967         ranlib="echo ignoring ranlib"
3968         ;;
3969     os/2*)
3970         ln_s="cp -f"
3971         objformat="aout"
3972         add_cppflags -D_GNU_SOURCE
3973         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
3974         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3975         LIBSUF="_s.a"
3976         SLIBPREF=""
3977         SLIBSUF=".dll"
3978         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3979         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3980         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3981             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3982             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3983             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3984             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3985         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3986             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3987         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3988         enable dos_paths
3989         ;;
3990     gnu/kfreebsd)
3991         add_cppflags -D_BSD_SOURCE
3992         ;;
3993     gnu)
3994         ;;
3995     qnx)
3996         add_cppflags -D_QNX_SOURCE
3997         network_extralibs="-lsocket"
3998         ;;
3999     symbian)
4000         SLIBSUF=".dll"
4001         enable dos_paths
4002         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4003         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4004         add_ldflags -Wl,--target1-abs,--no-undefined \
4005                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4006                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4007         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4008                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4009                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4010         ;;
4011     minix)
4012         ;;
4013     none)
4014         ;;
4015     *)
4016         die "Unknown OS '$target_os'."
4017         ;;
4018 esac
4019
4020 # determine libc flavour
4021
4022 probe_libc(){
4023     pfx=$1
4024     pfx_no_=${pfx%_}
4025     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4026     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4027         eval ${pfx}libc_type=uclibc
4028         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4029     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4030         eval ${pfx}libc_type=glibc
4031         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4032     # MinGW headers can be installed on Cygwin, so check for newlib first.
4033     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4034         eval ${pfx}libc_type=newlib
4035         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4036     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4037     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4038         eval ${pfx}libc_type=mingw64
4039         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4040         eval test \$${pfx_no_}cc_type = "gcc" &&
4041             add_${pfx}cppflags -D__printf__=__gnu_printf__
4042     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4043          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4044         eval ${pfx}libc_type=mingw32
4045         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4046             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4047             die "ERROR: MinGW32 runtime version must be >= 3.15."
4048         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4049         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4050             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4051         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4052             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4053         eval test \$${pfx_no_}cc_type = "gcc" &&
4054             add_${pfx}cppflags -D__printf__=__gnu_printf__
4055     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4056         eval ${pfx}libc_type=msvcrt
4057         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4058             if [ "$pfx" = host_ ]; then
4059                 add_host_cppflags -Dsnprintf=_snprintf
4060             else
4061                 add_compat strtod.o strtod=avpriv_strtod
4062                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4063                                              _snprintf=avpriv_snprintf  \
4064                                              vsnprintf=avpriv_vsnprintf
4065             fi
4066         fi
4067         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4068         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4069         # 0x601 by default unless something else is set by the user.
4070         # This can easily lead to us detecting functions only present
4071         # in such new versions and producing binaries requiring windows 7.0.
4072         # Therefore explicitly set the default to XP unless the user has
4073         # set something else on the command line.
4074         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4075         # family. For these cases, configure is free to use any functions
4076         # found in the SDK headers by default. (Alternatively, we could force
4077         # _WIN32_WINNT to 0x0602 in that case.)
4078         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4079             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4080 #ifdef WINAPI_FAMILY
4081 #include <winapifamily.h>
4082 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4083 #error not desktop
4084 #endif
4085 #endif
4086 EOF
4087         if [ "$pfx" = "" ]; then
4088             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4089         fi
4090     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4091         eval ${pfx}libc_type=klibc
4092     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4093         eval ${pfx}libc_type=bionic
4094     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4095         eval ${pfx}libc_type=solaris
4096         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4097     else
4098         eval ${pfx}libc_type=default
4099         add_${pfx}cppflags -D_DEFAULT_SOURCE
4100     fi
4101     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4102 }
4103
4104 probe_libc
4105 probe_libc host_
4106
4107 # hacks for compiler/libc/os combinations
4108
4109 case $libc_type in
4110     bionic)
4111         add_compat strtod.o strtod=avpriv_strtod
4112         ;;
4113 esac
4114
4115 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4116     add_cppflags '-I\$(SRC_PATH)/compat/float'
4117
4118 esc(){
4119     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4120 }
4121
4122 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4123
4124 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4125
4126 set_default $PATHS_LIST
4127 set_default nm
4128
4129 disabled optimizations || check_cflags -fomit-frame-pointer
4130
4131 enable_weak_pic() {
4132     disabled pic && return
4133     enable pic
4134     add_cppflags -DPIC
4135     case "$target_os" in
4136     mingw*|cygwin*|win*)
4137         ;;
4138     *)
4139         add_cflags -fPIC
4140         add_asflags -fPIC
4141         ;;
4142     esac
4143 }
4144
4145 enabled pic && enable_weak_pic
4146
4147 check_cc <<EOF || die "Symbol mangling check failed."
4148 int ff_extern;
4149 EOF
4150 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4151 extern_prefix=${sym%%ff_extern*}
4152
4153 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4154
4155 _restrict=
4156 for restrict_keyword in restrict __restrict__ __restrict; do
4157     check_cc <<EOF && _restrict=$restrict_keyword && break
4158 void foo(char * $restrict_keyword p);
4159 EOF
4160 done
4161
4162 check_cc <<EOF && enable pragma_deprecated
4163 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4164 EOF
4165
4166 check_cc <<EOF || die "endian test failed"
4167 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4168 EOF
4169 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4170
4171 check_gas() {
4172     log "check_gas using '$as' as AS"
4173     # :vararg is used on aarch64, arm and ppc altivec
4174     check_as <<EOF || return 1
4175 .macro m n, y:vararg=0
4176 \n: .int \y
4177 .endm
4178 m x
4179 EOF
4180     # .altmacro is only used in arm asm
4181     ! enabled arm || check_as <<EOF || return 1
4182 .altmacro
4183 EOF
4184     enable gnu_as
4185     return 0
4186 }
4187
4188 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4189     nogas=:
4190     enabled_any arm aarch64 && nogas=die
4191     enabled_all ppc altivec && nogas=warn
4192     as_noop=-v
4193
4194     case $as_type in
4195         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4196         gcc)  gaspp_as_type=gas ;;
4197         *)    gaspp_as_type=$as_type ;;
4198     esac
4199
4200     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4201
4202     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4203         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4204
4205     if ! check_gas ; then
4206         as=${gas:=$as}
4207         check_gas || \
4208             $nogas "GNU assembler not found, install/update gas-preprocessor"
4209     fi
4210
4211     check_as <<EOF && enable as_func
4212 .func test
4213 .endfunc
4214 EOF
4215 fi
4216
4217 check_inline_asm inline_asm_labels '"1:\n"'
4218
4219 if enabled aarch64; then
4220     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4221     # internal assembler in clang 3.3 does not support this instruction
4222     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4223     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4224
4225     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4226
4227 elif enabled alpha; then
4228
4229     check_cflags -mieee
4230
4231 elif enabled arm; then
4232
4233     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4234     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4235     enabled thumb && check_cflags -mthumb || check_cflags -marm
4236
4237     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4238         enable vfp_args
4239     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4240         enable vfp_args
4241     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4242         case "${cross_prefix:-$cc}" in
4243             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4244             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4245 __asm__ (".eabi_attribute 28, 1");
4246 int main(void) { return 0; }
4247 EOF
4248         esac
4249         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4250     fi
4251
4252     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4253     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4254     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4255     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4256     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4257     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4258
4259     [ $target_os = linux ] || [ $target_os = android ] ||
4260         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4261             $ARCH_EXT_LIST_ARM
4262
4263     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4264
4265     check_as <<EOF && enable as_arch_directive
4266 .arch armv7-a
4267 EOF
4268     check_as <<EOF && enable as_fpu_directive
4269 .fpu neon
4270 EOF
4271
4272     # llvm's integrated assembler supports .object_arch from llvm 3.5
4273     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4274         check_as <<EOF && enable as_object_arch
4275 .object_arch armv4
4276 EOF
4277
4278     # MS armasm fails to assemble our PIC constructs
4279     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4280
4281 elif enabled mips; then
4282
4283     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4284
4285     # make sure that only an instruction set is enabled
4286     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4287
4288     if enabled mips64; then
4289         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4290             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4291                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4292     else
4293         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4294             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4295                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4296     fi
4297
4298 elif enabled parisc; then
4299
4300     if enabled gcc; then
4301         case $($cc -dumpversion) in
4302             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4303         esac
4304     fi
4305
4306 elif enabled ppc; then
4307
4308     enable local_aligned_8 local_aligned_16 local_aligned_32
4309
4310     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4311     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4312     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4313     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4314
4315     if enabled altivec; then
4316         check_cflags -maltivec -mabi=altivec
4317
4318         # check if our compiler supports Motorola AltiVec C API
4319         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4320                                  vector signed int v2 = (vector signed int) { 1 };
4321                                  v1 = vec_add(v1, v2);" ||
4322             disable altivec
4323
4324         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4325     fi
4326
4327     if enabled vsx; then
4328         check_cflags -mvsx &&
4329         check_code cc altivec.h "int v[4] = { 0 };
4330                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4331             disable vsx
4332     fi
4333
4334     if enabled power8; then
4335         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4336     fi
4337
4338 elif enabled x86; then
4339
4340     check_builtin rdtsc    intrin.h   "__rdtsc()"
4341     check_builtin mm_empty mmintrin.h "_mm_empty()"
4342
4343     enable local_aligned_8 local_aligned_16 local_aligned_32
4344
4345     # check whether EBP is available on x86
4346     # As 'i' is stored on the stack, this program will crash
4347     # if the base pointer is used to access it because the
4348     # base pointer is cleared in the inline assembly code.
4349     check_exec_crash <<EOF && enable ebp_available
4350 volatile int i=0;
4351 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4352 return i;
4353 EOF
4354
4355     # check whether EBX is available on x86
4356     check_inline_asm ebx_available '""::"b"(0)' &&
4357         check_inline_asm ebx_available '"":::"%ebx"'
4358
4359     # check whether xmm clobbers are supported
4360     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4361
4362     # check whether binutils is new enough to compile SSSE3/MMXEXT
4363     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4364     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4365
4366     probe_x86asm(){
4367         x86asmexe_probe=$1
4368         if check_cmd $x86asmexe_probe -v; then
4369             x86asmexe=$x86asmexe_probe
4370             x86asm_type=nasm
4371             x86asm_debug="-g -F dwarf"
4372             X86ASMDEP=
4373             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4374         elif check_cmd $x86asmexe_probe --version; then
4375             x86asmexe=$x86asmexe_probe
4376             x86asm_type=yasm
4377             x86asm_debug="-g dwarf2"
4378             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4379             X86ASM_DEPFLAGS=
4380         fi
4381         check_x86asm "movbe ecx, [5]" && enable x86asm
4382     }
4383
4384     if ! disabled_any asm mmx x86asm; then
4385         disable x86asm
4386         for program in $x86asmexe nasm yasm; do
4387             probe_x86asm $program && break
4388         done
4389         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4390         X86ASMFLAGS="-f $objformat"
4391         enabled pic               && append X86ASMFLAGS "-DPIC"
4392         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4393         case "$objformat" in
4394             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4395         esac
4396
4397         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4398         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4399         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4400         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4401         check_x86asm "CPU amdnop"                      || disable cpunop
4402     fi
4403
4404     case "$cpu" in
4405         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4406             disable fast_clz
4407         ;;
4408     esac
4409
4410 fi
4411
4412 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4413
4414 check_ldflags -Wl,--as-needed
4415
4416 if ! disabled network; then
4417     check_func getaddrinfo $network_extralibs
4418     check_func inet_aton $network_extralibs
4419
4420     check_type netdb.h "struct addrinfo"
4421     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4422     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4423     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4424     check_type poll.h "struct pollfd"
4425     check_type netinet/sctp.h "struct sctp_event_subscribe"
4426     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4427     check_type netinet/in.h "struct sockaddr_in6"
4428     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4429     check_type "sys/types.h sys/socket.h" socklen_t
4430
4431     # Prefer arpa/inet.h over winsock2
4432     if check_header arpa/inet.h ; then
4433         check_func closesocket
4434     elif check_header winsock2.h ; then
4435         check_func_headers winsock2.h closesocket -lws2 &&
4436             network_extralibs="-lws2" ||
4437         { check_func_headers winsock2.h closesocket -lws2_32 &&
4438             network_extralibs="-lws2_32"; } || disable winsock2_h network
4439         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4440
4441         check_type ws2tcpip.h socklen_t
4442         check_type ws2tcpip.h "struct addrinfo"
4443         check_type ws2tcpip.h "struct group_source_req"
4444         check_type ws2tcpip.h "struct ip_mreq_source"
4445         check_type ws2tcpip.h "struct ipv6_mreq"
4446         check_type winsock2.h "struct pollfd"
4447         check_struct winsock2.h "struct sockaddr" sa_len
4448         check_type ws2tcpip.h "struct sockaddr_in6"
4449         check_type ws2tcpip.h "struct sockaddr_storage"
4450     else
4451         disable network
4452     fi
4453 fi
4454
4455 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4456 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4457 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4458 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4459
4460 case "$custom_allocator" in
4461     jemalloc)
4462         # jemalloc by default does not use a prefix
4463         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4464     ;;
4465     tcmalloc)
4466         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4467         malloc_prefix=tc_
4468     ;;
4469 esac
4470
4471 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4472 check_func  ${malloc_prefix}memalign            && enable memalign
4473 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4474
4475 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4476     { check_lib clock_gettime time.h clock_gettime ||
4477       check_lib clock_gettime time.h clock_gettime -lrt; }
4478
4479 check_func  fcntl
4480 check_func  gethrtime
4481 check_func  getopt
4482 check_func  getrusage
4483 check_func  gettimeofday
4484 check_func  gmtime_r
4485 check_func  isatty
4486 check_func  localtime_r
4487 check_func  mkstemp
4488 check_func  mmap
4489 check_func  mprotect
4490 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4491 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4492 check_func  sched_getaffinity
4493 check_func  setrlimit
4494 check_func  strerror_r
4495 check_func  sysconf
4496 check_func  sysctl
4497 check_func  usleep
4498
4499 check_func_headers io.h setmode
4500 check_func_headers mach/mach_time.h mach_absolute_time
4501 check_func_headers stdlib.h getenv
4502
4503 check_func_headers windows.h GetProcessAffinityMask
4504 check_func_headers windows.h GetProcessTimes
4505 check_func_headers windows.h GetSystemTimeAsFileTime
4506 check_func_headers windows.h LoadLibrary
4507 check_func_headers windows.h MapViewOfFile
4508 check_func_headers windows.h SetConsoleTextAttribute
4509 check_func_headers windows.h Sleep
4510 check_func_headers windows.h VirtualAlloc
4511 check_struct windows.h "CONDITION_VARIABLE" Ptr
4512
4513 check_header direct.h
4514 check_header dxgidebug.h
4515 check_header dxva.h
4516 check_header dxva2api.h
4517 check_header io.h
4518 check_header malloc.h
4519 check_header poll.h
4520 check_header sys/param.h
4521 check_header sys/resource.h
4522 check_header sys/select.h
4523 check_header sys/time.h
4524 check_header sys/un.h
4525 check_header unistd.h
4526 check_header valgrind/valgrind.h
4527 check_header VideoDecodeAcceleration/VDADecoder.h
4528 check_header windows.h
4529
4530 # it seems there are versions of clang in some distros that try to use the
4531 # gcc headers, which explodes for stdatomic
4532 # so we also check that atomics actually work here
4533 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4534
4535 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4536 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4537 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4538 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4539
4540 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4541
4542 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4543 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4544 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4545
4546 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4547 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4548 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4549
4550 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4551 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4552 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4553 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4554 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4555 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4556 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4557 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4558 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4559
4560 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4561
4562 if ! disabled w32threads && ! enabled pthreads; then
4563     check_lib w32threads "windows.h process.h" _beginthreadex
4564 fi
4565
4566 # check for some common methods of building with pthread support
4567 # do this before the optional library checks as some of them require pthreads
4568 if ! disabled pthreads && ! enabled w32threads; then
4569     if check_lib pthreads pthread.h pthread_join -pthread; then
4570         add_cflags -pthread
4571     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4572         add_cflags -pthreads
4573     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4574         :
4575     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4576         :
4577     elif check_func pthread_join; then
4578         enable pthreads
4579     fi
4580 fi
4581
4582 enabled pthreads &&
4583     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4584
4585 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4586 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4587
4588 # On some systems dynamic loading requires no extra linker flags
4589 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4590
4591 check_lib libm math.h sin -lm
4592
4593 atan2f_args=2
4594 ldexpf_args=2
4595 powf_args=2
4596
4597 for func in $MATH_FUNCS; do
4598     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4599 done
4600
4601 # these are off by default, so fail if requested and not available
4602 enabled avisynth          && require_header avisynth/avisynth_c.h
4603 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4604 enabled cuda              && require cuda cuda.h cuInit -lcuda
4605 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4606 enabled frei0r            && require_header frei0r.h
4607 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4608                              check_lib gmp gmp.h mpz_export -lgmp
4609 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4610 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4611 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4612 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4613 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4614 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4615 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4616 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4617 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4618 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4619 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4620 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4621 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4622 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4623 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4624 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4625 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4626 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4627 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4628                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4629 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4630 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4631 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4632 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4633 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4634 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4635 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4636 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4637 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4638 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4639 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4640 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4641                              { enabled libvpx_vp8_decoder &&
4642                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4643                                enabled libvpx_vp8_encoder &&
4644                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4645                                enabled libvpx_vp9_decoder &&
4646                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4647                                enabled libvpx_vp9_encoder &&
4648                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4649                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4650                                    die "libvpx enabled but no supported decoders/encoders found"
4651                              }
4652 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4653 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4654 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4655                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4656                              { check_cpp_condition x264.h "X264_MPEG2" &&
4657                                enable libx262; }
4658 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4659                              require_cpp_condition x265.h "X265_BUILD >= 57"
4660 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4661 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4662 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4663                                { ! enabled cross_compile &&
4664                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4665                                  add_ldflags -L/opt/vc/lib/ &&
4666                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4667                                die "ERROR: mmal not found" &&
4668                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4669 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4670 enabled omx               && require_header OMX_Core.h
4671 enabled omx_rpi           && { check_header OMX_Core.h ||
4672                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4673                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4674 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4675                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4676                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4677                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4678                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4679                                die "ERROR: openssl not found"; }
4680
4681 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4682 enabled avplay &&
4683     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4684
4685 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4686 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4687
4688 check_header linux/fb.h
4689 check_header linux/videodev2.h
4690 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4691
4692 check_header AVFoundation/AVFoundation.h
4693
4694 check_header sys/videoio.h
4695
4696 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4697 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4698 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4699 # w32api 3.12 had it defined wrong
4700 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4701
4702 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4703 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4704     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4705     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4706     check_header "dev/ic/bt8xx.h"
4707
4708 check_header sys/soundcard.h
4709
4710 enabled alsa_indev &&
4711     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4712
4713 enabled libjack &&
4714     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4715
4716 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4717
4718 if enabled libcdio; then
4719     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4720     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4721     die "ERROR: No usable libcdio/cdparanoia found"
4722 fi
4723
4724 if enabled libxcb; then
4725     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4726     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4727     disabled libxcb_shm ||
4728         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4729     disabled libxcb_xfixes ||
4730         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4731 fi
4732
4733 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4734 # the desktop api partition
4735 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4736 #ifdef WINAPI_FAMILY
4737 #include <winapifamily.h>
4738 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4739 #error desktop, not uwp
4740 #else
4741 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4742 #endif
4743 #else
4744 #error no family set
4745 #endif
4746 EOF
4747
4748 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4749
4750 enabled vaapi &&
4751     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4752     disable vaapi
4753
4754 enabled vaapi &&
4755     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4756
4757 enabled vaapi &&
4758     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4759
4760 enabled vaapi &&
4761     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4762     enable vaapi_1
4763
4764 enabled vdpau &&
4765     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4766     disable vdpau
4767
4768 enabled vdpau &&
4769     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4770
4771 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4772
4773 # add some useful compiler flags if supported
4774 check_cflags -Wdeclaration-after-statement
4775 check_cflags -Wall
4776 check_cflags -Wdisabled-optimization
4777 check_cflags -Wpointer-arith
4778 check_cflags -Wredundant-decls
4779 check_cflags -Wwrite-strings
4780 check_cflags -Wtype-limits
4781 check_cflags -Wundef
4782 check_cflags -Wmissing-prototypes
4783 check_cflags -Wstrict-prototypes
4784
4785 if enabled extra_warnings; then
4786     check_cflags -Wcast-qual
4787     check_cflags -Wextra
4788     check_cflags -Wpedantic
4789 fi
4790
4791 check_disable_warning(){
4792     warning_flag=-W${1#-Wno-}
4793     test_cflags $warning_flag && add_cflags $1
4794 }
4795
4796 check_disable_warning -Wno-parentheses
4797 check_disable_warning -Wno-switch
4798 check_disable_warning -Wno-format-zero-length
4799 check_disable_warning -Wno-pointer-sign
4800
4801 check_disable_warning_headers(){
4802     warning_flag=-W${1#-Wno-}
4803     test_cflags $warning_flag && add_cflags_headers $1
4804 }
4805
4806 check_disable_warning_headers -Wno-deprecated-declarations
4807 check_disable_warning_headers -Wno-unused-variable
4808
4809 check_objcflags -fobjc-arc && enable objc_arc
4810
4811 check_cc <<EOF && enable blocks_extension
4812 void (^block)(void);
4813 EOF
4814
4815 # add some linker flags
4816 check_ldflags -Wl,--warn-common
4817 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4818 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4819 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4820
4821 # add some strip flags
4822 # -wN '..@*' is more selective than -x, but not available everywhere.
4823 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4824
4825 enabled neon_clobber_test &&
4826     check_ldflags -Wl,--wrap,avcodec_open2              \
4827                   -Wl,--wrap,avcodec_decode_audio4      \
4828                   -Wl,--wrap,avcodec_decode_video2      \
4829                   -Wl,--wrap,avcodec_decode_subtitle2   \
4830                   -Wl,--wrap,avcodec_encode_audio2      \
4831                   -Wl,--wrap,avcodec_encode_video2      \
4832                   -Wl,--wrap,avcodec_encode_subtitle    \
4833                   -Wl,--wrap,avcodec_send_packet        \
4834                   -Wl,--wrap,avcodec_receive_packet     \
4835                   -Wl,--wrap,avcodec_send_frame         \
4836                   -Wl,--wrap,avcodec_receive_frame      \
4837                   -Wl,--wrap,avresample_convert ||
4838     disable neon_clobber_test
4839
4840 enabled xmm_clobber_test &&
4841     check_ldflags -Wl,--wrap,avcodec_open2              \
4842                   -Wl,--wrap,avcodec_decode_audio4      \
4843                   -Wl,--wrap,avcodec_decode_video2      \
4844                   -Wl,--wrap,avcodec_decode_subtitle2   \
4845                   -Wl,--wrap,avcodec_encode_audio2      \
4846                   -Wl,--wrap,avcodec_encode_video2      \
4847                   -Wl,--wrap,avcodec_encode_subtitle    \
4848                   -Wl,--wrap,avcodec_send_packet        \
4849                   -Wl,--wrap,avcodec_receive_packet     \
4850                   -Wl,--wrap,avcodec_send_frame         \
4851                   -Wl,--wrap,avcodec_receive_frame      \
4852                   -Wl,--wrap,avresample_convert         \
4853                   -Wl,--wrap,sws_scale ||
4854     disable xmm_clobber_test
4855
4856 check_ld <<EOF && enable proper_dce
4857 extern const int array[512];
4858 static inline int func(void) { return array[0]; }