build: Drop support for legacy TI ARM compiler
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$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 $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
517     done
518 }
519
520 disable_sanitized(){
521     for var; do
522         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
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     check_ld "$@" <<EOF
903 int main(void){ return 0; }
904 EOF
905 }
906
907 check_ldflags(){
908     log check_ldflags "$@"
909     test_ldflags "$@" && add_ldflags "$@"
910 }
911
912 test_stripflags(){
913     log test_stripflags "$@"
914     # call check_cc to get a fresh TMPO
915     check_cc <<EOF
916 int main(void) { return 0; }
917 EOF
918     check_cmd $strip $STRIPFLAGS "$@" $TMPO
919 }
920
921 check_stripflags(){
922     log check_stripflags "$@"
923     test_stripflags "$@" && add_stripflags "$@"
924 }
925
926 check_header(){
927     log check_header "$@"
928     headers=$1
929     shift
930     disable_sanitized $headers
931     {
932         for hdr in $headers; do
933             print_include $hdr
934         done
935         echo "int x;"
936     } | check_cpp "$@" && enable_sanitized $headers
937 }
938
939 check_func(){
940     log check_func "$@"
941     func=$1
942     shift
943     disable $func
944     check_ld "$@" <<EOF && enable $func
945 extern int $func();
946 int main(void){ $func(); }
947 EOF
948 }
949
950 check_mathfunc(){
951     log check_mathfunc "$@"
952     func=$1
953     narg=$2
954     shift 2
955     test $narg = 2 && args="f, g" || args="f"
956     disable $func
957     check_ld "$@" <<EOF && enable $func
958 #include <math.h>
959 float foo(float f, float g) { return $func($args); }
960 int main(void){ return 0; }
961 EOF
962 }
963
964 check_func_headers(){
965     log check_func_headers "$@"
966     headers=$1
967     funcs=$2
968     shift 2
969     {
970         for hdr in $headers; do
971             print_include $hdr
972         done
973         for func in $funcs; do
974             echo "long check_$func(void) { return (long) $func; }"
975         done
976         echo "int main(void) { return 0; }"
977     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
978 }
979
980 check_cpp_condition(){
981     log check_cpp_condition "$@"
982     header=$1
983     condition=$2
984     shift 2
985     check_cpp "$@" <<EOF
986 #include <$header>
987 #if !($condition)
988 #error "unsatisfied condition: $condition"
989 #endif
990 EOF
991 }
992
993 test_cflags_cpp(){
994     log test_cflags_cpp "$@"
995     flags=$1
996     condition=$2
997     shift 2
998     set -- $($cflags_filter "$flags")
999     check_cpp "$@" <<EOF
1000 #if !($condition)
1001 #error "unsatisfied condition: $condition"
1002 #endif
1003 EOF
1004 }
1005
1006 check_lib(){
1007     log check_lib "$@"
1008     name="$1"
1009     headers="$2"
1010     funcs="$3"
1011     shift 3
1012     disable $name
1013     check_func_headers "$headers" "$funcs" "$@" &&
1014         enable $name && eval ${name}_extralibs="\$@"
1015 }
1016
1017 test_pkg_config(){
1018     log test_pkg_config "$@"
1019     name="$1"
1020     pkg_version="$2"
1021     pkg="${2%% *}"
1022     headers="$3"
1023     funcs="$4"
1024     shift 4
1025     disable $name
1026     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1027     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1028     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1029     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1030         enable $name &&
1031         set_sanitized "${name}_cflags"    $pkg_cflags &&
1032         set_sanitized "${name}_extralibs" $pkg_libs
1033 }
1034
1035 check_pkg_config(){
1036     log check_pkg_config "$@"
1037     name="$1"
1038     test_pkg_config "$@" &&
1039         eval add_cflags \$${name}_cflags
1040 }
1041
1042 check_exec(){
1043     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1044 }
1045
1046 check_exec_crash(){
1047     log check_exec_crash "$@"
1048     code=$(cat)
1049
1050     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1051     # are safe but may not be available everywhere.  Thus we use
1052     # raise(SIGTERM) instead.  The check is run in a subshell so we
1053     # can redirect the "Terminated" message from the shell.  SIGBUS
1054     # is not defined by standard C so it is used conditionally.
1055
1056     (check_exec "$@") >> $logfile 2>&1 <<EOF
1057 #include <signal.h>
1058 static void sighandler(int sig){
1059     raise(SIGTERM);
1060 }
1061 int foo(void){
1062     $code
1063 }
1064 int (*func_ptr)(void) = foo;
1065 int main(void){
1066     signal(SIGILL, sighandler);
1067     signal(SIGFPE, sighandler);
1068     signal(SIGSEGV, sighandler);
1069 #ifdef SIGBUS
1070     signal(SIGBUS, sighandler);
1071 #endif
1072     return func_ptr();
1073 }
1074 EOF
1075 }
1076
1077 check_type(){
1078     log check_type "$@"
1079     headers=$1
1080     type=$2
1081     shift 2
1082     disable_sanitized "$type"
1083     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1084 }
1085
1086 check_struct(){
1087     log check_struct "$@"
1088     headers=$1
1089     struct=$2
1090     member=$3
1091     shift 3
1092     disable_sanitized "${struct}_${member}"
1093     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1094         enable_sanitized "${struct}_${member}"
1095 }
1096
1097 check_builtin(){
1098     log check_builtin "$@"
1099     name=$1
1100     headers=$2
1101     builtin=$3
1102     shift 3
1103     disable "$name"
1104     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1105 }
1106
1107 check_compile_assert(){
1108     log check_compile_assert "$@"
1109     name=$1
1110     headers=$2
1111     condition=$3
1112     shift 3
1113     disable "$name"
1114     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1115 }
1116
1117 require(){
1118     log require "$@"
1119     name_version="$1"
1120     name="${1%% *}"
1121     headers="$2"
1122     func="$3"
1123     shift 3
1124     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1125 }
1126
1127 require_header(){
1128     log require "$@"
1129     headers="$1"
1130     shift
1131     check_header "$headers" "$@" || die "ERROR: $headers not found"
1132 }
1133
1134 require_cpp_condition(){
1135     log require "$@"
1136     header="$1"
1137     condition="$2"
1138     shift 2
1139     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1140 }
1141
1142 require_pkg_config(){
1143     log require_pkg_config "$@"
1144     pkg_version="$2"
1145     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1146 }
1147
1148 hostcc_e(){
1149     eval printf '%s\\n' $HOSTCC_E
1150 }
1151
1152 hostcc_o(){
1153     eval printf '%s\\n' $HOSTCC_O
1154 }
1155
1156 check_host_cc(){
1157     log check_host_cc "$@"
1158     cat > $TMPC
1159     log_file $TMPC
1160     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1161 }
1162
1163 check_host_cpp(){
1164     log check_host_cpp "$@"
1165     cat > $TMPC
1166     log_file $TMPC
1167     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1168 }
1169
1170 check_host_cppflags(){
1171     log check_host_cppflags "$@"
1172     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1173 #include <stdlib.h>;
1174 EOF
1175 }
1176
1177 check_host_cflags(){
1178     log check_host_cflags "$@"
1179     set -- $($host_cflags_filter "$@")
1180     check_host_cc "$@" <<EOF && append host_cflags "$@"
1181 int x;
1182 EOF
1183 }
1184
1185 check_host_cpp_condition(){
1186     log check_host_cpp_condition "$@"
1187     header=$1
1188     condition=$2
1189     shift 2
1190     check_host_cpp "$@" <<EOF
1191 #include <$header>
1192 #if !($condition)
1193 #error "unsatisfied condition: $condition"
1194 #endif
1195 EOF
1196 }
1197
1198 apply(){
1199     file=$1
1200     shift
1201     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1202 }
1203
1204 cp_if_changed(){
1205     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1206     mkdir -p "$(dirname $2)"
1207     cp -f "$1" "$2"
1208 }
1209
1210 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1211 # system-dependent things.
1212
1213 AVCODEC_COMPONENTS="
1214     bsfs
1215     decoders
1216     encoders
1217     hwaccels
1218     parsers
1219 "
1220
1221 AVDEVICE_COMPONENTS="
1222     indevs
1223 "
1224 AVFILTER_COMPONENTS="
1225     filters
1226 "
1227 AVFORMAT_COMPONENTS="
1228     demuxers
1229     muxers
1230     protocols
1231 "
1232
1233 COMPONENT_LIST="
1234     $AVCODEC_COMPONENTS
1235     $AVDEVICE_COMPONENTS
1236     $AVFILTER_COMPONENTS
1237     $AVFORMAT_COMPONENTS
1238 "
1239
1240 EXAMPLE_LIST="
1241     decode_audio_example
1242     decode_video_example
1243     encode_audio_example
1244     encode_video_example
1245     filter_audio_example
1246     metadata_example
1247     output_example
1248     qsvdec_example
1249     transcode_aac_example
1250 "
1251
1252 # catchall list of things that require external libs to link
1253 EXTRALIBS_LIST="
1254     cpu_init
1255     cws2fws
1256 "
1257
1258 HWACCEL_LIBRARY_NONFREE_LIST="
1259     cuda
1260     cuvid
1261     libnpp
1262 "
1263 HWACCEL_LIBRARY_LIST="
1264     $HWACCEL_LIBRARY_NONFREE_LIST
1265     d3d11va
1266     dxva2
1267     libmfx
1268     mmal
1269     nvenc
1270     omx
1271     vaapi
1272     vda
1273     vdpau
1274 "
1275
1276 EXTERNAL_LIBRARY_GPL_LIST="
1277     libcdio
1278     libx264
1279     libx265
1280     libxavs
1281     libxvid
1282 "
1283
1284 EXTERNAL_LIBRARY_NONFREE_LIST="
1285     libfaac
1286     libfdk_aac
1287     openssl
1288 "
1289
1290 EXTERNAL_LIBRARY_VERSION3_LIST="
1291     libopencore_amrnb
1292     libopencore_amrwb
1293     libvo_aacenc
1294     libvo_amrwbenc
1295 "
1296
1297 EXTERNAL_LIBRARY_LIST="
1298     $EXTERNAL_LIBRARY_GPL_LIST
1299     $EXTERNAL_LIBRARY_NONFREE_LIST
1300     $EXTERNAL_LIBRARY_VERSION3_LIST
1301     avisynth
1302     avxsynth
1303     frei0r
1304     gnutls
1305     libbs2b
1306     libdc1394
1307     libdcadec
1308     libfontconfig
1309     libfreetype
1310     libgsm
1311     libhdcd
1312     libilbc
1313     libjack
1314     libkvazaar
1315     libmp3lame
1316     libopencv
1317     libopenh264
1318     libopenjpeg
1319     libopus
1320     libpulse
1321     librtmp
1322     libschroedinger
1323     libsnappy
1324     libspeex
1325     libtheora
1326     libtwolame
1327     libvorbis
1328     libvpx
1329     libwavpack
1330     libwebp
1331     libxcb
1332     libxcb_shm
1333     libxcb_xfixes
1334 "
1335
1336 SYSTEM_LIBRARY_LIST="
1337     bzlib
1338     zlib
1339 "
1340
1341 FEATURE_LIST="
1342     gray
1343     hardcoded_tables
1344     omx_rpi
1345     runtime_cpudetect
1346     safe_bitstream_reader
1347     shared
1348     small
1349     sram
1350     static
1351     swscale_alpha
1352 "
1353
1354 LIBRARY_LIST="
1355     avcodec
1356     avdevice
1357     avfilter
1358     avformat
1359     avresample
1360     avutil
1361     swscale
1362 "
1363
1364 LICENSE_LIST="
1365     gpl
1366     nonfree
1367     version3
1368 "
1369
1370 PROGRAM_LIST="
1371     avconv
1372     avplay
1373     avprobe
1374 "
1375
1376 SUBSYSTEM_LIST="
1377     dct
1378     doc
1379     error_resilience
1380     faan
1381     fft
1382     lsp
1383     lzo
1384     mdct
1385     network
1386     rdft
1387 "
1388
1389 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1390 CONFIG_LIST="
1391     $EXAMPLE_LIST
1392     $EXTERNAL_LIBRARY_LIST
1393     $HWACCEL_LIBRARY_LIST
1394     $FEATURE_LIST
1395     $LICENSE_LIST
1396     $LIBRARY_LIST
1397     $PROGRAM_LIST
1398     $SUBSYSTEM_LIST
1399     $SYSTEM_LIBRARY_LIST
1400     neon_clobber_test
1401     pic
1402     pod2man
1403     texi2html
1404     thumb
1405     valgrind_backtrace
1406     xmm_clobber_test
1407     $COMPONENT_LIST
1408 "
1409
1410 THREADS_LIST="
1411     pthreads
1412     w32threads
1413 "
1414
1415 ATOMICS_LIST="
1416     atomics_gcc
1417     atomics_suncc
1418     atomics_win32
1419 "
1420
1421 ARCH_LIST="
1422     aarch64
1423     alpha
1424     arm
1425     avr32
1426     avr32_ap
1427     avr32_uc
1428     bfin
1429     ia64
1430     m68k
1431     mips
1432     mips64
1433     parisc
1434     ppc
1435     ppc64
1436     s390
1437     sh4
1438     sparc
1439     sparc64
1440     tilegx
1441     tilepro
1442     tomi
1443     x86
1444     x86_32
1445     x86_64
1446 "
1447
1448 ARCH_EXT_LIST_ARM="
1449     armv5te
1450     armv6
1451     armv6t2
1452     armv8
1453     neon
1454     vfp
1455     vfpv3
1456 "
1457
1458 ARCH_EXT_LIST_X86_SIMD="
1459     amd3dnow
1460     amd3dnowext
1461     avx
1462     avx2
1463     fma3
1464     fma4
1465     mmx
1466     mmxext
1467     sse
1468     sse2
1469     sse3
1470     sse4
1471     sse42
1472     ssse3
1473     xop
1474 "
1475
1476 ARCH_EXT_LIST_PPC="
1477     altivec
1478     dcbzl
1479     ldbrx
1480     power8
1481     ppc4xx
1482     vsx
1483 "
1484
1485 ARCH_EXT_LIST_X86="
1486     $ARCH_EXT_LIST_X86_SIMD
1487     cpunop
1488     i686
1489 "
1490
1491 ARCH_EXT_LIST_MIPS="
1492     loongson
1493     mips32r1
1494     mips64r1
1495     mips32r2
1496     mips64r2
1497     mips32r6
1498     mips64r6
1499 "
1500
1501 ARCH_EXT_LIST="
1502     $ARCH_EXT_LIST_ARM
1503     $ARCH_EXT_LIST_MIPS
1504     $ARCH_EXT_LIST_PPC
1505     $ARCH_EXT_LIST_X86
1506     vis
1507 "
1508
1509 ARCH_FEATURES="
1510     aligned_stack
1511     fast_64bit
1512     fast_clz
1513     fast_cmov
1514     local_aligned_8
1515     local_aligned_16
1516     local_aligned_32
1517     simd_align_16
1518     simd_align_32
1519 "
1520
1521 BUILTIN_LIST="
1522     atomic_cas_ptr
1523     machine_rw_barrier
1524     MemoryBarrier
1525     mm_empty
1526     rdtsc
1527     sem_timedwait
1528     sync_val_compare_and_swap
1529 "
1530 HAVE_LIST_CMDLINE="
1531     inline_asm
1532     symver
1533     x86asm
1534 "
1535
1536 HAVE_LIST_PUB="
1537     bigendian
1538     fast_unaligned
1539 "
1540
1541 HEADERS_LIST="
1542     AVFoundation_AVFoundation_h
1543     arpa_inet_h
1544     cdio_paranoia_h
1545     cdio_paranoia_paranoia_h
1546     dispatch_dispatch_h
1547     dev_bktr_ioctl_bt848_h
1548     dev_bktr_ioctl_meteor_h
1549     dev_ic_bt8xx_h
1550     dev_video_bktr_ioctl_bt848_h
1551     dev_video_meteor_ioctl_meteor_h
1552     direct_h
1553     dxgidebug_h
1554     dxva_h
1555     io_h
1556     machine_ioctl_bt848_h
1557     machine_ioctl_meteor_h
1558     malloc_h
1559     poll_h
1560     sys_param_h
1561     sys_resource_h
1562     sys_select_h
1563     sys_soundcard_h
1564     sys_time_h
1565     sys_un_h
1566     sys_videoio_h
1567     unistd_h
1568     valgrind_valgrind_h
1569     windows_h
1570     winsock2_h
1571 "
1572
1573 INTRINSICS_LIST="
1574     intrinsics_neon
1575 "
1576
1577 MATH_FUNCS="
1578     atanf
1579     atan2f
1580     cbrtf
1581     cosf
1582     exp2
1583     exp2f
1584     expf
1585     isinf
1586     isnan
1587     ldexpf
1588     llrint
1589     llrintf
1590     log2
1591     log2f
1592     log10f
1593     lrint
1594     lrintf
1595     powf
1596     rint
1597     round
1598     roundf
1599     sinf
1600     trunc
1601     truncf
1602 "
1603
1604 SYSTEM_FEATURES="
1605     dos_paths
1606     libc_msvcrt
1607     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1608     section_data_rel_ro
1609     threads
1610     uwp
1611 "
1612
1613 SYSTEM_FUNCS="
1614     aligned_malloc
1615     clock_gettime
1616     closesocket
1617     CommandLineToArgvW
1618     fcntl
1619     getaddrinfo
1620     gethrtime
1621     getopt
1622     GetProcessAffinityMask
1623     GetProcessMemoryInfo
1624     GetProcessTimes
1625     getrusage
1626     GetSystemTimeAsFileTime
1627     gettimeofday
1628     gmtime_r
1629     inet_aton
1630     isatty
1631     localtime_r
1632     mach_absolute_time
1633     MapViewOfFile
1634     memalign
1635     mmap
1636     mprotect
1637     nanosleep
1638     posix_memalign
1639     sched_getaffinity
1640     SetConsoleTextAttribute
1641     setmode
1642     setrlimit
1643     Sleep
1644     strerror_r
1645     sysconf
1646     sysctl
1647     usleep
1648     VirtualAlloc
1649 "
1650
1651 SYSTEM_LIBRARIES="
1652     sdl
1653     vaapi_1
1654     vaapi_drm
1655     vaapi_x11
1656     vdpau_x11
1657     wincrypt
1658 "
1659
1660 TOOLCHAIN_FEATURES="
1661     as_arch_directive
1662     as_fpu_directive
1663     as_func
1664     as_object_arch
1665     asm_mod_q
1666     blocks_extension
1667     ebp_available
1668     ebx_available
1669     gnu_as
1670     ibm_asm
1671     inline_asm_labels
1672     pragma_deprecated
1673     symver_asm_label
1674     symver_gnu_asm
1675     vfp_args
1676     xform_asm
1677     xmm_clobbers
1678 "
1679
1680 TYPES_LIST="
1681     CONDITION_VARIABLE_Ptr
1682     CUVIDDECODECREATEINFO_bitDepthMinus8
1683     socklen_t
1684     struct_addrinfo
1685     struct_group_source_req
1686     struct_ip_mreq_source
1687     struct_ipv6_mreq
1688     struct_pollfd
1689     struct_rusage_ru_maxrss
1690     struct_sockaddr_in6
1691     struct_sockaddr_sa_len
1692     struct_sockaddr_storage
1693     struct_v4l2_frmivalenum_discrete
1694 "
1695
1696 HAVE_LIST="
1697     $ARCH_EXT_LIST
1698     $(add_suffix _external $ARCH_EXT_LIST)
1699     $(add_suffix _inline   $ARCH_EXT_LIST)
1700     $ARCH_FEATURES
1701     $BUILTIN_LIST
1702     $HAVE_LIST_CMDLINE
1703     $HAVE_LIST_PUB
1704     $HEADERS_LIST
1705     $INTRINSICS_LIST
1706     $MATH_FUNCS
1707     $SYSTEM_FEATURES
1708     $SYSTEM_FUNCS
1709     $SYSTEM_LIBRARIES
1710     $THREADS_LIST
1711     $TOOLCHAIN_FEATURES
1712     $TYPES_LIST
1713 "
1714
1715 # options emitted with CONFIG_ prefix but not available on the command line
1716 CONFIG_EXTRA="
1717     aandcttables
1718     ac3dsp
1719     adts_header
1720     audio_frame_queue
1721     audiodsp
1722     blockdsp
1723     bswapdsp
1724     cabac
1725     cbs
1726     cbs_h264
1727     cbs_h265
1728     cbs_mpeg2
1729     dirac_parse
1730     dvprofile
1731     faandct
1732     faanidct
1733     fdctdsp
1734     flacdsp
1735     fmtconvert
1736     g722dsp
1737     gmp
1738     golomb
1739     gplv3
1740     h263dsp
1741     h264chroma
1742     h264dsp
1743     h264parse
1744     h264pred
1745     h264qpel
1746     hevcparse
1747     hpeldsp
1748     huffman
1749     huffyuvdsp
1750     huffyuvencdsp
1751     idctdsp
1752     iirfilter
1753     imdct15
1754     intrax8
1755     iso_media
1756     ividsp
1757     jpegtables
1758     lgplv3
1759     libx262
1760     libxcb_shape
1761     lpc
1762     lzf
1763     me_cmp
1764     mpeg_er
1765     mpegaudio
1766     mpegaudiodsp
1767     mpegaudioheader
1768     mpegvideo
1769     mpegvideoenc
1770     mss34dsp
1771     pixblockdsp
1772     qpeldsp
1773     qsv
1774     qsvdec
1775     qsvenc
1776     qsvvpp
1777     rangecoder
1778     riffdec
1779     riffenc
1780     rtpdec
1781     rtpenc_chain
1782     rv34dsp
1783     sinewin
1784     snappy
1785     srtp
1786     startcode
1787     texturedsp
1788     texturedspenc
1789     tpeldsp
1790     vaapi_encode
1791     vc1dsp
1792     videodsp
1793     vp3dsp
1794     vp56dsp
1795     vp8dsp
1796     wma_freqs
1797     wmv2dsp
1798 "
1799
1800 CMDLINE_SELECT="
1801     $ARCH_EXT_LIST
1802     $CONFIG_LIST
1803     $HAVE_LIST_CMDLINE
1804     $THREADS_LIST
1805     asm
1806     cross_compile
1807     debug
1808     extra_warnings
1809     logging
1810     lto
1811     optimizations
1812     rpath
1813 "
1814
1815 PATHS_LIST="
1816     bindir
1817     datadir
1818     docdir
1819     incdir
1820     libdir
1821     mandir
1822     prefix
1823     shlibdir
1824 "
1825
1826 CMDLINE_SET="
1827     $PATHS_LIST
1828     ar
1829     arch
1830     as
1831     cc
1832     objcc
1833     cpu
1834     cross_prefix
1835     custom_allocator
1836     dep_cc
1837     env
1838     extra_version
1839     host_cc
1840     host_cflags
1841     host_extralibs
1842     host_ld
1843     host_ldflags
1844     host_os
1845     ignore_tests
1846     ld
1847     logfile
1848     malloc_prefix
1849     nm
1850     optflags
1851     pkg_config
1852     pkg_config_flags
1853     samples
1854     sysinclude
1855     sysroot
1856     target_exec
1857     target_os
1858     target_path
1859     target_samples
1860     toolchain
1861     x86asmexe
1862 "
1863
1864 CMDLINE_APPEND="
1865     extra_cflags
1866     extra_objcflags
1867     host_cppflags
1868 "
1869
1870 # code dependency declarations
1871
1872 # architecture extensions
1873
1874 armv5te_deps="arm"
1875 armv6_deps="arm"
1876 armv6t2_deps="arm"
1877 armv8_deps="aarch64"
1878 neon_deps_any="aarch64 arm"
1879 intrinsics_neon_deps="neon"
1880 vfp_deps_any="aarch64 arm"
1881 vfpv3_deps="vfp"
1882
1883 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1884
1885 altivec_deps="ppc"
1886 dcbzl_deps="ppc"
1887 ldbrx_deps="ppc"
1888 ppc4xx_deps="ppc"
1889 vsx_deps="altivec"
1890 power8_deps="vsx"
1891
1892 loongson_deps="mips"
1893 mips32r1_deps="mips32"
1894 mips32r2_deps="mips32"
1895 mips32r6_deps="mips32"
1896 mips64r1_deps="mips64"
1897 mips64r2_deps="mips64"
1898 mips64r6_deps="mips64"
1899
1900 vis_deps="sparc"
1901
1902 cpunop_deps="i686"
1903 x86_64_select="i686"
1904 x86_64_suggest="fast_cmov"
1905
1906 amd3dnow_deps="mmx"
1907 amd3dnowext_deps="amd3dnow"
1908 i686_deps="x86"
1909 mmx_deps="x86"
1910 mmxext_deps="mmx"
1911 sse_deps="mmxext"
1912 sse2_deps="sse"
1913 sse3_deps="sse2"
1914 ssse3_deps="sse3"
1915 sse4_deps="ssse3"
1916 sse42_deps="sse4"
1917 avx_deps="sse42"
1918 xop_deps="avx"
1919 fma3_deps="avx"
1920 fma4_deps="avx"
1921 avx2_deps="avx"
1922
1923 mmx_external_deps="x86asm"
1924 mmx_inline_deps="inline_asm x86"
1925 mmx_suggest="mmx_external mmx_inline"
1926
1927 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1928     eval dep=\$${ext}_deps
1929     eval ${ext}_external_deps='"${dep}_external"'
1930     eval ${ext}_inline_deps='"${dep}_inline"'
1931     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1932 done
1933
1934 aligned_stack_if_any="aarch64 ppc x86"
1935 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1936 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1937 fast_unaligned_if_any="aarch64 ppc x86"
1938 simd_align_16_if_any="altivec neon sse"
1939 simd_align_32_if_any="avx"
1940
1941 # system capabilities
1942 symver_if_any="symver_asm_label symver_gnu_asm"
1943 valgrind_backtrace_conflict="optimizations"
1944 valgrind_backtrace_deps="valgrind_valgrind_h"
1945
1946 # threading support
1947 atomics_gcc_if="sync_val_compare_and_swap"
1948 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1949 atomics_win32_if="MemoryBarrier"
1950 atomics_native_if_any="$ATOMICS_LIST"
1951 w32threads_deps="atomics_native"
1952 threads_if_any="$THREADS_LIST"
1953
1954 # subsystems
1955 cbs_h264_select="cbs golomb"
1956 cbs_h265_select="cbs golomb"
1957 cbs_mpeg2_select="cbs"
1958 dct_select="rdft"
1959 dirac_parse_select="golomb"
1960 error_resilience_select="me_cmp"
1961 faandct_deps="faan"
1962 faandct_select="fdctdsp"
1963 faanidct_deps="faan"
1964 faanidct_select="idctdsp"
1965 h264dsp_select="startcode"
1966 hevcparse_select="golomb"
1967 intrax8_select="blockdsp idctdsp"
1968 mdct_select="fft"
1969 rdft_select="fft"
1970 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1971 mpeg_er_select="error_resilience"
1972 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1973 mpegaudiodsp_select="dct"
1974 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1975 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1976 vc1dsp_select="h264chroma qpeldsp startcode"
1977
1978 # decoders / encoders
1979 aac_decoder_select="adts_header imdct15 mdct sinewin"
1980 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1981 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1982 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1983 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1984 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1985 adpcm_g722_decoder_select="g722dsp"
1986 adpcm_g722_encoder_select="g722dsp"
1987 aic_decoder_select="golomb idctdsp"
1988 alac_encoder_select="lpc"
1989 als_decoder_select="bswapdsp"
1990 amrnb_decoder_select="lsp"
1991 amrwb_decoder_select="lsp"
1992 amv_decoder_select="sp5x_decoder"
1993 ape_decoder_select="bswapdsp"
1994 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1995 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1996 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1997 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1998 atrac1_decoder_select="mdct sinewin"
1999 atrac3_decoder_select="mdct"
2000 atrac3p_decoder_select="mdct sinewin"
2001 bink_decoder_select="blockdsp hpeldsp"
2002 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2003 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2004 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2005 clearvideo_decoder_select="idctdsp"
2006 cllc_decoder_select="bswapdsp"
2007 comfortnoise_encoder_select="lpc"
2008 cook_decoder_select="audiodsp mdct sinewin"
2009 cscd_decoder_select="lzo"
2010 cscd_decoder_suggest="zlib"
2011 dca_decoder_select="fmtconvert mdct"
2012 dds_decoder_select="texturedsp"
2013 dnxhd_decoder_select="blockdsp idctdsp"
2014 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2015 dvvideo_decoder_select="dvprofile idctdsp"
2016 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2017 dxa_decoder_deps="zlib"
2018 dxv_decoder_select="lzf texturedsp"
2019 eac3_decoder_select="ac3_decoder"
2020 eac3_encoder_select="ac3_encoder"
2021 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2022 eatgq_decoder_select="aandcttables idctdsp"
2023 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2024 exr_decoder_deps="zlib"
2025 ffv1_decoder_select="rangecoder"
2026 ffv1_encoder_select="rangecoder"
2027 ffvhuff_decoder_select="huffyuv_decoder"
2028 ffvhuff_encoder_select="huffyuv_encoder"
2029 fic_decoder_select="golomb"
2030 flac_decoder_select="flacdsp"
2031 flac_encoder_select="bswapdsp flacdsp lpc"
2032 flashsv_decoder_deps="zlib"
2033 flashsv_encoder_deps="zlib"
2034 flashsv2_decoder_deps="zlib"
2035 flv_decoder_select="h263_decoder"
2036 flv_encoder_select="h263_encoder"
2037 fourxm_decoder_select="blockdsp bswapdsp"
2038 fraps_decoder_select="bswapdsp huffman"
2039 g2m_decoder_deps="zlib"
2040 g2m_decoder_select="blockdsp idctdsp jpegtables"
2041 h261_decoder_select="mpeg_er mpegvideo"
2042 h261_encoder_select="aandcttables mpegvideoenc"
2043 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2044 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2045 h263i_decoder_select="h263_decoder"
2046 h263p_encoder_select="h263_encoder"
2047 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2048 h264_decoder_suggest="error_resilience"
2049 hap_decoder_select="snappy texturedsp"
2050 hap_encoder_deps="libsnappy"
2051 hap_encoder_select="texturedspenc"
2052 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2053 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2054 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2055 iac_decoder_select="imc_decoder"
2056 imc_decoder_select="bswapdsp fft mdct sinewin"
2057 indeo3_decoder_select="hpeldsp"
2058 indeo4_decoder_select="ividsp"
2059 indeo5_decoder_select="ividsp"
2060 interplay_video_decoder_select="hpeldsp"
2061 jpegls_decoder_select="mjpeg_decoder"
2062 jv_decoder_select="blockdsp"
2063 lagarith_decoder_select="huffyuvdsp"
2064 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2065 magicyuv_decoder_select="huffyuvdsp"
2066 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2067 metasound_decoder_select="lsp mdct sinewin"
2068 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2069 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2070 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2071 mjpegb_decoder_select="mjpeg_decoder"
2072 mlp_decoder_select="mlp_parser"
2073 motionpixels_decoder_select="bswapdsp"
2074 mp1_decoder_select="mpegaudio"
2075 mp1float_decoder_select="mpegaudio"
2076 mp2_decoder_select="mpegaudio"
2077 mp2float_decoder_select="mpegaudio"
2078 mp3_decoder_select="mpegaudio"
2079 mp3adu_decoder_select="mpegaudio"
2080 mp3adufloat_decoder_select="mpegaudio"
2081 mp3float_decoder_select="mpegaudio"
2082 mp3on4_decoder_select="mpegaudio"
2083 mp3on4float_decoder_select="mpegaudio"
2084 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2085 mpc8_decoder_select="mpegaudiodsp"
2086 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2087 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2088 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2089 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2090 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2091 mpeg4_encoder_select="h263_encoder"
2092 msa1_decoder_select="mss34dsp"
2093 msmpeg4v1_decoder_select="h263_decoder"
2094 msmpeg4v2_decoder_select="h263_decoder"
2095 msmpeg4v2_encoder_select="h263_encoder"
2096 msmpeg4v3_decoder_select="h263_decoder"
2097 msmpeg4v3_encoder_select="h263_encoder"
2098 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2099 mts2_decoder_select="mss34dsp"
2100 mxpeg_decoder_select="mjpeg_decoder"
2101 nellymoser_decoder_select="mdct sinewin"
2102 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2103 nuv_decoder_select="idctdsp lzo"
2104 on2avc_decoder_select="mdct"
2105 opus_decoder_deps="avresample"
2106 opus_decoder_select="imdct15"
2107 png_decoder_deps="zlib"
2108 png_encoder_deps="zlib"
2109 png_encoder_select="huffyuvencdsp"
2110 prores_decoder_select="idctdsp"
2111 prores_encoder_select="fdctdsp"
2112 qcelp_decoder_select="lsp"
2113 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2114 ra_144_encoder_select="audio_frame_queue lpc"
2115 ralf_decoder_select="golomb"
2116 rscc_decoder_deps="zlib"
2117 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2118 rv10_encoder_select="h263_encoder"
2119 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2120 rv20_encoder_select="h263_encoder"
2121 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2122 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2123 screenpresso_decoder_deps="zlib"
2124 sipr_decoder_select="lsp"
2125 sp5x_decoder_select="mjpeg_decoder"
2126 svq1_decoder_select="hpeldsp"
2127 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2128 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2129 svq3_decoder_suggest="zlib"
2130 tak_decoder_select="audiodsp"
2131 tdsc_decoder_deps="zlib"
2132 tdsc_decoder_select="mjpeg_decoder"
2133 theora_decoder_select="vp3_decoder"
2134 thp_decoder_select="mjpeg_decoder"
2135 tiff_decoder_suggest="zlib"
2136 tiff_encoder_suggest="zlib"
2137 truehd_decoder_select="mlp_decoder"
2138 truemotion2_decoder_select="bswapdsp"
2139 truespeech_decoder_select="bswapdsp"
2140 tscc_decoder_deps="zlib"
2141 txd_decoder_select="texturedsp"
2142 twinvq_decoder_select="mdct lsp sinewin"
2143 utvideo_decoder_select="bswapdsp huffyuvdsp"
2144 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2145 vble_decoder_select="huffyuvdsp"
2146 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2147 vc1image_decoder_select="vc1_decoder"
2148 vorbis_decoder_select="mdct"
2149 vorbis_encoder_select="mdct"
2150 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2151 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2152 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2153 vp6a_decoder_select="vp6_decoder"
2154 vp6f_decoder_select="vp6_decoder"
2155 vp7_decoder_select="h264pred videodsp vp8dsp"
2156 vp8_decoder_select="h264pred videodsp vp8dsp"
2157 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2158 webp_decoder_select="vp8_decoder"
2159 wmapro_decoder_select="mdct sinewin wma_freqs"
2160 wmav1_decoder_select="mdct sinewin wma_freqs"
2161 wmav1_encoder_select="mdct sinewin wma_freqs"
2162 wmav2_decoder_select="mdct sinewin wma_freqs"
2163 wmav2_encoder_select="mdct sinewin wma_freqs"
2164 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2165 wmv1_decoder_select="h263_decoder"
2166 wmv1_encoder_select="h263_encoder"
2167 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2168 wmv2_encoder_select="h263_encoder wmv2dsp"
2169 wmv3_decoder_select="vc1_decoder"
2170 wmv3image_decoder_select="wmv3_decoder"
2171 zerocodec_decoder_deps="zlib"
2172 zlib_decoder_deps="zlib"
2173 zlib_encoder_deps="zlib"
2174 zmbv_decoder_deps="zlib"
2175 zmbv_encoder_deps="zlib"
2176
2177 # hardware accelerators
2178 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2179 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2180 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2181 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2182
2183 h263_vaapi_hwaccel_deps="vaapi"
2184 h263_vaapi_hwaccel_select="h263_decoder"
2185 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2186 h264_cuvid_hwaccel_select="h264_decoder"
2187 h264_d3d11va_hwaccel_deps="d3d11va"
2188 h264_d3d11va_hwaccel_select="h264_decoder"
2189 h264_d3d11va2_hwaccel_deps="d3d11va"
2190 h264_d3d11va2_hwaccel_select="h264_decoder"
2191 h264_dxva2_hwaccel_deps="dxva2"
2192 h264_dxva2_hwaccel_select="h264_decoder"
2193 h264_mmal_hwaccel_deps="mmal"
2194 h264_qsv_hwaccel_deps="libmfx"
2195 h264_vaapi_hwaccel_deps="vaapi"
2196 h264_vaapi_hwaccel_select="h264_decoder"
2197 h264_vda_hwaccel_deps="vda"
2198 h264_vda_hwaccel_select="h264_decoder"
2199 h264_vda_old_hwaccel_deps="vda"
2200 h264_vda_old_hwaccel_select="h264_decoder"
2201 h264_vdpau_hwaccel_deps="vdpau"
2202 h264_vdpau_hwaccel_select="h264_decoder"
2203 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2204 hevc_cuvid_hwaccel_select="hevc_decoder"
2205 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2206 hevc_d3d11va_hwaccel_select="hevc_decoder"
2207 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2208 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2209 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2210 hevc_dxva2_hwaccel_select="hevc_decoder"
2211 hevc_qsv_hwaccel_deps="libmfx"
2212 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2213 hevc_vaapi_hwaccel_select="hevc_decoder"
2214 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2215 hevc_vdpau_hwaccel_select="hevc_decoder"
2216 mpeg1_vdpau_hwaccel_deps="vdpau"
2217 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2218 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2219 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2220 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2221 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2222 mpeg2_dxva2_hwaccel_deps="dxva2"
2223 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2224 mpeg2_mmal_hwaccel_deps="mmal"
2225 mpeg2_qsv_hwaccel_deps="libmfx"
2226 mpeg2_vaapi_hwaccel_deps="vaapi"
2227 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2228 mpeg2_vdpau_hwaccel_deps="vdpau"
2229 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2230 mpeg4_vaapi_hwaccel_deps="vaapi"
2231 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2232 mpeg4_vdpau_hwaccel_deps="vdpau"
2233 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2234 vc1_d3d11va_hwaccel_deps="d3d11va"
2235 vc1_d3d11va_hwaccel_select="vc1_decoder"
2236 vc1_d3d11va2_hwaccel_deps="d3d11va"
2237 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2238 vc1_dxva2_hwaccel_deps="dxva2"
2239 vc1_dxva2_hwaccel_select="vc1_decoder"
2240 vc1_mmal_hwaccel_deps="mmal"
2241 vc1_qsv_hwaccel_deps="libmfx"
2242 vc1_vaapi_hwaccel_deps="vaapi"
2243 vc1_vaapi_hwaccel_select="vc1_decoder"
2244 vc1_vdpau_hwaccel_deps="vdpau"
2245 vc1_vdpau_hwaccel_select="vc1_decoder"
2246 vp8_qsv_hwaccel_deps="libmfx"
2247 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2248 vp8_vaapi_hwaccel_select="vp8_decoder"
2249 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2250 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2251 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2252 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2253 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2254
2255 # hardware-accelerated codecs
2256 nvenc_deps_any="libdl LoadLibrary"
2257 omx_deps="libdl pthreads"
2258 omx_rpi_select="omx"
2259 qsv_deps="libmfx"
2260 qsvdec_select="qsv"
2261 qsvenc_select="qsv"
2262 qsvvpp_select="qsv"
2263 vaapi_encode_deps="vaapi"
2264
2265 hwupload_cuda_filter_deps="cuda"
2266 scale_npp_filter_deps="cuda libnpp"
2267
2268 h264_mmal_decoder_deps="mmal"
2269 h264_nvenc_encoder_deps="nvenc"
2270 h264_omx_encoder_deps="omx"
2271 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2272 h264_qsv_encoder_select="qsvenc"
2273 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2274 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2275 hevc_nvenc_encoder_deps="nvenc"
2276 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2277 hevc_qsv_encoder_select="hevcparse qsvenc"
2278 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2279 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2280 mjpeg_qsv_encoder_deps="libmfx"
2281 mjpeg_qsv_encoder_select="qsvenc"
2282 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2283 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2284 mpeg2_mmal_decoder_deps="mmal"
2285 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2286 mpeg2_qsv_encoder_select="qsvenc"
2287 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2288 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2289 mpeg4_omx_encoder_deps="omx"
2290 vc1_mmal_decoder_deps="mmal"
2291 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2292 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2293 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2294 vp8_vaapi_encoder_select="vaapi_encode"
2295 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2296 vp9_vaapi_encoder_select="vaapi_encode"
2297
2298 nvenc_h264_encoder_select="h264_nvenc_encoder"
2299 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2300
2301 # parsers
2302 aac_parser_select="adts_header"
2303 h264_parser_select="golomb h264dsp h264parse"
2304 hevc_parser_select="hevcparse"
2305 mpegaudio_parser_select="mpegaudioheader"
2306 mpegvideo_parser_select="mpegvideo"
2307 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2308 vc1_parser_select="vc1dsp"
2309
2310 # bitstream_filters
2311 aac_adtstoasc_bsf_select="adts_header"
2312 h264_metadata_bsf_select="cbs_h264"
2313 h264_redundant_pps_bsf_select="cbs_h264"
2314 hevc_metadata_bsf_select="cbs_h265"
2315 mjpeg2jpeg_bsf_select="jpegtables"
2316 mpeg2_metadata_bsf_select="cbs_mpeg2"
2317 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2318
2319 # external libraries
2320 avisynth_deps="LoadLibrary"
2321 avxsynth_deps="libdl"
2322 avisynth_demuxer_deps_any="avisynth avxsynth"
2323 avisynth_demuxer_select="riffdec"
2324 libdcadec_decoder_deps="libdcadec"
2325 libfaac_encoder_deps="libfaac"
2326 libfaac_encoder_select="audio_frame_queue"
2327 libfdk_aac_decoder_deps="libfdk_aac"
2328 libfdk_aac_encoder_deps="libfdk_aac"
2329 libfdk_aac_encoder_select="audio_frame_queue"
2330 libgsm_decoder_deps="libgsm"
2331 libgsm_encoder_deps="libgsm"
2332 libgsm_ms_decoder_deps="libgsm"
2333 libgsm_ms_encoder_deps="libgsm"
2334 libilbc_decoder_deps="libilbc"
2335 libilbc_encoder_deps="libilbc"
2336 libkvazaar_encoder_deps="libkvazaar"
2337 libmp3lame_encoder_deps="libmp3lame"
2338 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2339 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2340 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2341 libopencore_amrnb_encoder_select="audio_frame_queue"
2342 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2343 libopenh264_decoder_deps="libopenh264"
2344 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2345 libopenh264_encoder_deps="libopenh264"
2346 libopenjpeg_decoder_deps="libopenjpeg"
2347 libopenjpeg_encoder_deps="libopenjpeg"
2348 libopus_decoder_deps="libopus"
2349 libopus_encoder_deps="libopus"
2350 libopus_encoder_select="audio_frame_queue"
2351 libschroedinger_decoder_deps="libschroedinger"
2352 libschroedinger_encoder_deps="libschroedinger"
2353 libspeex_decoder_deps="libspeex"
2354 libspeex_encoder_deps="libspeex"
2355 libspeex_encoder_select="audio_frame_queue"
2356 libtheora_encoder_deps="libtheora"
2357 libtwolame_encoder_deps="libtwolame"
2358 libvo_aacenc_encoder_deps="libvo_aacenc"
2359 libvo_aacenc_encoder_select="audio_frame_queue"
2360 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2361 libvorbis_encoder_deps="libvorbis"
2362 libvorbis_encoder_select="audio_frame_queue"
2363 libvpx_vp8_decoder_deps="libvpx"
2364 libvpx_vp8_encoder_deps="libvpx"
2365 libvpx_vp9_decoder_deps="libvpx"
2366 libvpx_vp9_encoder_deps="libvpx"
2367 libwavpack_encoder_deps="libwavpack"
2368 libwavpack_encoder_select="audio_frame_queue"
2369 libwebp_encoder_deps="libwebp"
2370 libx262_encoder_deps="libx262"
2371 libx264_encoder_deps="libx264"
2372 libx265_encoder_deps="libx265"
2373 libxavs_encoder_deps="libxavs"
2374 libxvid_encoder_deps="libxvid mkstemp"
2375
2376 # demuxers / muxers
2377 ac3_demuxer_select="ac3_parser"
2378 asf_demuxer_select="riffdec"
2379 asf_muxer_select="riffenc"
2380 asf_stream_muxer_select="asf_muxer"
2381 avi_demuxer_select="iso_media riffdec"
2382 avi_muxer_select="riffenc"
2383 caf_demuxer_select="iso_media riffdec"
2384 dash_muxer_select="mp4_muxer"
2385 dirac_demuxer_select="dirac_parser"
2386 dv_demuxer_select="dvprofile"
2387 dv_muxer_select="dvprofile"
2388 dxa_demuxer_select="riffdec"
2389 eac3_demuxer_select="ac3_parser"
2390 f4v_muxer_select="mov_muxer"
2391 flac_demuxer_select="flac_parser"
2392 hds_muxer_select="flv_muxer"
2393 hls_muxer_select="mpegts_muxer"
2394 ipod_muxer_select="mov_muxer"
2395 ismv_muxer_select="mov_muxer"
2396 matroska_audio_muxer_select="matroska_muxer"
2397 matroska_demuxer_select="iso_media riffdec"
2398 matroska_demuxer_suggest="bzlib lzo zlib"
2399 matroska_muxer_select="iso_media riffenc"
2400 mmf_muxer_select="riffenc"
2401 mov_demuxer_select="iso_media riffdec"
2402 mov_demuxer_suggest="zlib"
2403 mov_muxer_select="iso_media riffenc rtpenc_chain"
2404 mp3_demuxer_select="mpegaudio_parser"
2405 mp3_muxer_select="mpegaudioheader"
2406 mp4_muxer_select="mov_muxer"
2407 mpegts_demuxer_select="iso_media"
2408 mpegts_muxer_select="adts_muxer latm_muxer"
2409 mpegtsraw_demuxer_select="mpegts_demuxer"
2410 mxf_d10_muxer_select="mxf_muxer"
2411 nut_muxer_select="riffenc"
2412 nuv_demuxer_select="riffdec"
2413 oga_muxer_select="ogg_muxer"
2414 ogg_demuxer_select="dirac_parse"
2415 opus_muxer_select="ogg_muxer"
2416 psp_muxer_select="mov_muxer"
2417 rtp_demuxer_select="sdp_demuxer"
2418 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2419 rtsp_demuxer_select="http_protocol rtpdec"
2420 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2421 sap_demuxer_select="sdp_demuxer"
2422 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2423 sdp_demuxer_select="rtpdec"
2424 smoothstreaming_muxer_select="ismv_muxer"
2425 spdif_demuxer_select="adts_header"
2426 spdif_muxer_select="adts_header"
2427 spx_muxer_select="ogg_muxer"
2428 swf_demuxer_suggest="zlib"
2429 tak_demuxer_select="tak_parser"
2430 tg2_muxer_select="mov_muxer"
2431 tgp_muxer_select="mov_muxer"
2432 w64_demuxer_select="wav_demuxer"
2433 wav_demuxer_select="riffdec"
2434 wav_muxer_select="riffenc"
2435 webm_muxer_select="iso_media riffenc"
2436 wtv_demuxer_select="mpegts_demuxer riffdec"
2437 xmv_demuxer_select="riffdec"
2438 xwma_demuxer_select="riffdec"
2439
2440 # indevs
2441 alsa_indev_deps="alsa"
2442 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2443 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2444 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2445 fbdev_indev_deps="linux_fb_h"
2446 jack_indev_deps="libjack"
2447 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2448 libcdio_indev_deps="libcdio"
2449 libdc1394_indev_deps="libdc1394"
2450 oss_indev_deps_any="sys_soundcard_h"
2451 pulse_indev_deps="libpulse"
2452 sndio_indev_deps="sndio"
2453 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2454 vfwcap_indev_deps="vfw32 vfwcap_defines"
2455 xcbgrab_indev_deps="libxcb libxcb_shape"
2456 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2457
2458 # protocols
2459 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2460 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2461 ffrtmpcrypt_protocol_select="tcp_protocol"
2462 ffrtmphttp_protocol_conflict="librtmp_protocol"
2463 ffrtmphttp_protocol_select="http_protocol"
2464 gopher_protocol_select="network"
2465 http_protocol_select="tcp_protocol"
2466 http_protocol_suggest="zlib"
2467 httpproxy_protocol_select="tcp_protocol"
2468 httpproxy_protocol_suggest="zlib"
2469 https_protocol_select="tls_protocol"
2470 https_protocol_suggest="zlib"
2471 icecast_protocol_select="http_protocol"
2472 librtmp_protocol_deps="librtmp"
2473 librtmpe_protocol_deps="librtmp"
2474 librtmps_protocol_deps="librtmp"
2475 librtmpt_protocol_deps="librtmp"
2476 librtmpte_protocol_deps="librtmp"
2477 mmsh_protocol_select="http_protocol"
2478 mmst_protocol_select="network"
2479 rtmp_protocol_conflict="librtmp_protocol"
2480 rtmp_protocol_select="tcp_protocol"
2481 rtmp_protocol_suggest="zlib"
2482 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2483 rtmpe_protocol_suggest="zlib"
2484 rtmps_protocol_conflict="librtmp_protocol"
2485 rtmps_protocol_select="tls_protocol"
2486 rtmps_protocol_suggest="zlib"
2487 rtmpt_protocol_select="ffrtmphttp_protocol"
2488 rtmpt_protocol_suggest="zlib"
2489 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2490 rtmpte_protocol_suggest="zlib"
2491 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2492 rtmpts_protocol_suggest="zlib"
2493 rtp_protocol_select="udp_protocol"
2494 sctp_protocol_deps="struct_sctp_event_subscribe"
2495 sctp_protocol_select="network"
2496 srtp_protocol_select="rtp_protocol srtp"
2497 tcp_protocol_select="network"
2498 tls_protocol_deps_any="gnutls openssl"
2499 tls_protocol_select="tcp_protocol"
2500 udp_protocol_select="network"
2501 unix_protocol_deps="sys_un_h"
2502 unix_protocol_select="network"
2503
2504 # filters
2505 asyncts_filter_deps="avresample"
2506 blackframe_filter_deps="gpl"
2507 boxblur_filter_deps="gpl"
2508 bs2b_filter_deps="libbs2b"
2509 cropdetect_filter_deps="gpl"
2510 deinterlace_qsv_filter_deps="libmfx"
2511 deinterlace_vaapi_filter_deps="vaapi"
2512 delogo_filter_deps="gpl"
2513 drawtext_filter_deps="libfreetype"
2514 drawtext_filter_suggest="libfontconfig"
2515 frei0r_filter_deps="frei0r libdl"
2516 frei0r_src_filter_deps="frei0r libdl"
2517 hdcd_filter_deps="libhdcd"
2518 hqdn3d_filter_deps="gpl"
2519 interlace_filter_deps="gpl"
2520 movie_filter_deps="avcodec avformat"
2521 ocv_filter_deps="libopencv"
2522 overlay_qsv_filter_deps="libmfx"
2523 overlay_qsv_filter_select="qsvvpp"
2524 resample_filter_deps="avresample"
2525 scale_filter_deps="swscale"
2526 scale_qsv_filter_deps="libmfx"
2527 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2528 vpp_qsv_filter_deps="libmfx"
2529 vpp_qsv_filter_select="qsvvpp"
2530
2531 # examples
2532 decode_audio_example_deps="avcodec avutil"
2533 decode_video_example_deps="avcodec avutil"
2534 encode_audio_example_deps="avcodec avutil"
2535 encode_video_example_deps="avcodec avutil"
2536 filter_audio_example_deps="avfilter avutil"
2537 metadata_example_deps="avformat avutil"
2538 output_example_deps="avcodec avformat avresample avutil swscale"
2539 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2540 transcode_aac_example_deps="avcodec avformat avresample"
2541
2542 # EXTRALIBS_LIST
2543 cpu_init_extralibs="pthreads_extralibs"
2544 cws2fws_extralibs="zlib_extralibs"
2545
2546 # libraries, in linking order
2547 avcodec_deps="avutil"
2548 avcodec_select="null_bsf"
2549 avdevice_deps="avformat avcodec avutil"
2550 avfilter_deps="avutil"
2551 avformat_deps="avcodec avutil"
2552 avformat_suggest="network"
2553 avresample_deps="avutil"
2554 swscale_deps="avutil"
2555
2556 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2557 avdevice_extralibs="libm_extralibs"
2558 avformat_extralibs="libm_extralibs"
2559 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2560 avresample_extralibs="libm_extralibs"
2561 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"
2562 swscale_extralibs="libm_extralibs"
2563
2564 # programs
2565 avconv_deps="avcodec avfilter avformat avresample swscale"
2566 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2567                fps_filter null_filter resample_filter scale_filter
2568                trim_filter"
2569 avconv_suggest="psapi shell32"
2570 avplay_deps="avcodec avfilter avformat avresample sdl"
2571 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2572 avplay_suggest="shell32"
2573 avprobe_deps="avcodec avformat"
2574 avprobe_suggest="shell32"
2575
2576 # documentation
2577 pod2man_deps="doc"
2578 texi2html_deps="doc"
2579
2580 # default parameters
2581
2582 logfile="avbuild/config.log"
2583
2584 # installation paths
2585 prefix_default="/usr/local"
2586 bindir_default='${prefix}/bin'
2587 datadir_default='${prefix}/share/avconv'
2588 docdir_default='${prefix}/share/doc/libav'
2589 incdir_default='${prefix}/include'
2590 libdir_default='${prefix}/lib'
2591 mandir_default='${prefix}/share/man'
2592 shlibdir_default="$libdir_default"
2593
2594 # toolchain
2595 ar_default="ar"
2596 cc_default="gcc"
2597 host_cc_default="gcc"
2598 x86asmexe_default="nasm"
2599 ln_s="ln -s -f"
2600 nm_default="nm -g"
2601 pkg_config_default=pkg-config
2602 ranlib="ranlib"
2603 strip="strip"
2604 version_script='--version-script'
2605
2606 # machine
2607 arch_default=$(uname -m)
2608 cpu="generic"
2609 intrinsics="none"
2610
2611 # OS
2612 target_os_default=$(tolower $(uname -s))
2613 host_os=$target_os_default
2614
2615 # configurable options
2616 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2617
2618 enable asm
2619 enable debug
2620 enable doc
2621 enable faan faandct faanidct
2622 enable optimizations
2623 enable safe_bitstream_reader
2624 enable static
2625 enable swscale_alpha
2626 enable valgrind_backtrace
2627
2628 # By default, enable only those hwaccels that have no external dependencies.
2629 enable d3d11va dxva2 vda vdpau
2630
2631 # internal components are enabled by default
2632 enable $EXTRALIBS_LIST
2633
2634 # Avoid external, non-system, libraries getting enabled by dependency resolution
2635 disable $EXTERNAL_LIBRARY_LIST
2636
2637 # build settings
2638 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2639 LIBPREF="lib"
2640 LIBSUF=".a"
2641 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2642 SLIBPREF="lib"
2643 SLIBSUF=".so"
2644 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2645 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2646 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2647 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2648 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2649 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2650 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2651
2652 asflags_filter=echo
2653 cflags_filter=echo
2654 ldflags_filter=echo
2655
2656 AS_C='-c'
2657 AS_O='-o $@'
2658 CC_C='-c'
2659 CC_E='-E -o $@'
2660 CC_O='-o $@'
2661 OBJCC_C='-c'
2662 OBJCC_E='-E -o $@'
2663 OBJCC_O='-o $@'
2664 X86ASM_O='-o $@'
2665 LD_O='-o $@'
2666 LD_LIB='-l%'
2667 LD_PATH='-L'
2668 HOSTCC_C='-c'
2669 HOSTCC_E='-E -o $@'
2670 HOSTCC_O='-o $@'
2671 HOSTLD_O='-o $@'
2672
2673 host_extralibs='-lm'
2674 host_cflags_filter=echo
2675 host_ldflags_filter=echo
2676
2677 target_path='$(CURDIR)'
2678
2679 # since the object filename is not given with the -MM flag, the compiler
2680 # is only able to print the basename, and we must add the path ourselves
2681 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2682 DEPFLAGS='-MM'
2683
2684 mkdir -p avbuild
2685
2686 # find source path
2687 if test -f configure; then
2688     source_path=.
2689 else
2690     source_path=$(cd $(dirname "$0"); pwd)
2691     echo "$source_path" | grep -q '[[:blank:]]' &&
2692         die "Out of tree builds are impossible with whitespace in source path."
2693     test -e "$source_path/config.h" &&
2694         die "Out of tree builds are impossible with config.h in source dir."
2695 fi
2696
2697 for v in "$@"; do
2698     r=${v#*=}
2699     l=${v%"$r"}
2700     r=$(sh_quote "$r")
2701     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2702 done
2703
2704 find_things(){
2705     thing=$1
2706     pattern=$2
2707     file=$source_path/$3
2708     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2709 }
2710
2711 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2712 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2713 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2714 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2715 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2716 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2717 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2718 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2719
2720 find_things_extern(){
2721     thing=$1
2722     pattern=$2
2723     file=$source_path/$3
2724     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2725 }
2726
2727 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2728 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2729
2730 AVCODEC_COMPONENTS_LIST="
2731     $BSF_LIST
2732     $DECODER_LIST
2733     $ENCODER_LIST
2734     $HWACCEL_LIST
2735     $PARSER_LIST
2736 "
2737
2738 AVDEVICE_COMPONENTS_LIST="
2739     $INDEV_LIST
2740 "
2741
2742 AVFILTER_COMPONENTS_LIST="
2743     $FILTER_LIST
2744 "
2745
2746 AVFORMAT_COMPONENTS_LIST="
2747     $DEMUXER_LIST
2748     $MUXER_LIST
2749     $PROTOCOL_LIST
2750 "
2751
2752 ALL_COMPONENTS="
2753     $AVCODEC_COMPONENTS_LIST
2754     $AVDEVICE_COMPONENTS_LIST
2755     $AVFILTER_COMPONENTS_LIST
2756     $AVFORMAT_COMPONENTS_LIST
2757 "
2758
2759 for n in $COMPONENT_LIST; do
2760     v=$(toupper ${n%s})_LIST
2761     eval enable \$$v
2762     eval ${n}_if_any="\$$v"
2763 done
2764
2765 enable $ARCH_EXT_LIST
2766
2767 die_unknown(){
2768     echo "Unknown option \"$1\"."
2769     echo "See $0 --help for available options."
2770     exit 1
2771 }
2772
2773 print_3_columns() {
2774     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2775 }
2776
2777 show_list() {
2778     suffix=_$1
2779     shift
2780     echo $* | sed s/$suffix//g | print_3_columns
2781     exit 0
2782 }
2783
2784 for opt do
2785     optval="${opt#*=}"
2786     case "$opt" in
2787         --extra-ldflags=*)
2788             add_ldflags $optval
2789         ;;
2790         --extra-ldexeflags=*)
2791             add_ldexeflags $optval
2792         ;;
2793         --extra-ldsoflags=*)
2794             add_ldsoflags $optval
2795         ;;
2796         --extra-libs=*)
2797             add_extralibs $optval
2798         ;;
2799         --disable-devices)
2800             disable $INDEV_LIST
2801         ;;
2802         --enable-debug=*)
2803             debuglevel="$optval"
2804         ;;
2805         --disable-programs)
2806             disable $PROGRAM_LIST
2807         ;;
2808         --disable-everything)
2809             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2810         ;;
2811         --disable-all)
2812             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2813             disable $LIBRARY_LIST $PROGRAM_LIST doc
2814         ;;
2815         --enable-*=*|--disable-*=*)
2816             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2817             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2818             eval list=\$$(toupper $thing)_LIST
2819             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2820             $action $(filter "$name" $list)
2821         ;;
2822         --enable-yasm|--disable-yasm)
2823             warn "The ${opt} option is only provided for compatibility and will be\n"\
2824                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2825             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2826         ;;
2827         --enable-?*|--disable-?*)
2828             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2829             if is_in $option $COMPONENT_LIST; then
2830                 test $action = disable && action=unset
2831                 eval $action \$$(toupper ${option%s})_LIST
2832             elif is_in $option $CMDLINE_SELECT; then
2833                 $action $option
2834             else
2835                 die_unknown $opt
2836             fi
2837         ;;
2838         --list-*)
2839             NAME="${opt#--list-}"
2840             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2841             NAME=${NAME%s}
2842             eval show_list $NAME \$$(toupper $NAME)_LIST
2843         ;;
2844         --help|-h) show_help
2845         ;;
2846         --quiet|-q) quiet=yes
2847         ;;
2848         *)
2849             optname="${opt%%=*}"
2850             optname="${optname#--}"
2851             optname=$(echo "$optname" | sed 's/-/_/g')
2852             if is_in $optname $CMDLINE_SET; then
2853                 eval $optname='$optval'
2854             elif is_in $optname $CMDLINE_APPEND; then
2855                 append $optname "$optval"
2856             else
2857                 die_unknown $opt
2858             fi
2859         ;;
2860     esac
2861 done
2862
2863 for e in $env; do
2864     eval "export $e"
2865 done
2866
2867 disabled logging && logfile=/dev/null
2868
2869 # we need to build at least one lib type
2870 if ! enabled_any static shared; then
2871     cat <<EOF
2872 At least one library type must be built.
2873 Specify --enable-static to build the static libraries or --enable-shared to
2874 build the shared libraries as well. To only build the shared libraries specify
2875 --disable-static in addition to --enable-shared.
2876 EOF
2877     exit 1
2878 fi
2879
2880 # Die early if licensing-related configure options are incompatible.
2881 die_license_disabled() {
2882     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2883 }
2884
2885 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2886 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2887 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2888
2889 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2890
2891 enabled_all gnutls openssl &&
2892     die "GnuTLS and OpenSSL must not be enabled at the same time."
2893
2894 # Disable all the library-specific components if the library itself
2895 # is disabled, see AVCODEC_LIST and following _LIST variables.
2896
2897 disable_components(){
2898     disabled ${1} && disable $(
2899         eval components="\$$(toupper ${1})_COMPONENTS"
2900         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2901     )
2902 }
2903
2904 map 'disable_components $v' $LIBRARY_LIST
2905
2906 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2907 set >> $logfile
2908
2909 case "$toolchain" in
2910     *-asan)
2911         cc_default="${toolchain%-asan}"
2912         add_cflags  -fsanitize=address
2913         add_ldflags -fsanitize=address
2914     ;;
2915     *-msan)
2916         cc_default="${toolchain%-msan}"
2917         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2918         add_ldflags -fsanitize=memory
2919     ;;
2920     *-tsan)
2921         cc_default="${toolchain%-tsan}"
2922         add_cflags  -fsanitize=thread -fPIE
2923         add_ldflags -fsanitize=thread -pie
2924         case "$toolchain" in
2925             gcc-tsan)
2926                 add_cflags  -fPIC
2927                 add_ldflags -fPIC
2928                 ;;
2929         esac
2930     ;;
2931     *-usan)
2932         cc_default="${toolchain%-usan}"
2933         add_cflags  -fsanitize=undefined
2934         add_ldflags -fsanitize=undefined
2935         case "$toolchain" in
2936             clang-usan)
2937                 add_cflags -O1
2938                 ;;
2939         esac
2940     ;;
2941     valgrind-*)
2942         target_exec_default="valgrind"
2943         case "$toolchain" in
2944             valgrind-massif)
2945                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2946                 ;;
2947             valgrind-memcheck)
2948                 target_exec_args="--track-origins=yes --leak-check=full"
2949                 ;;
2950         esac
2951     ;;
2952     msvc)
2953         # Check whether the current MSVC version needs the C99 converter.
2954         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2955         # support enough of C99 to build libav. Default to the new
2956         # behaviour if the regexp was unable to match anything, since this
2957         # successfully parses the version number of existing supported
2958         # versions that require the converter (MSVC 2010 and 2012).
2959         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2960         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2961             cc_default="cl"
2962         else
2963             cc_default="c99wrap cl"
2964         fi
2965         ld_default="$source_path/compat/windows/mslink"
2966         nm_default="dumpbin -symbols"
2967         ar_default="lib"
2968         case "$arch" in
2969         aarch64|arm64)
2970             as_default="armasm64"
2971             ;;
2972         arm*)
2973             as_default="armasm"
2974             ;;
2975         esac
2976         target_os_default="win32"
2977         # Use a relative path for TMPDIR. This makes sure all the
2978         # ffconf temp files are written with a relative path, avoiding
2979         # issues with msys/win32 path conversion for MSVC parameters
2980         # such as -Fo<file> or -out:<file>.
2981         TMPDIR=.
2982     ;;
2983     icl)
2984         cc_default="icl"
2985         ld_default="xilink"
2986         nm_default="dumpbin -symbols"
2987         ar_default="xilib"
2988         target_os_default="win32"
2989         TMPDIR=.
2990     ;;
2991     gcov)
2992         add_cflags  -fprofile-arcs -ftest-coverage
2993         add_ldflags -fprofile-arcs -ftest-coverage
2994     ;;
2995     llvm-cov)
2996         add_cflags -fprofile-arcs -ftest-coverage
2997         add_ldflags --coverage
2998     ;;
2999     hardened)
3000         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3001         add_cflags   -fno-strict-overflow -fstack-protector-all
3002         add_ldflags  -Wl,-z,relro -Wl,-z,now
3003     ;;
3004     ?*)
3005         die "Unknown toolchain $toolchain"
3006     ;;
3007 esac
3008
3009 test -n "$cross_prefix" && enable cross_compile
3010
3011 if enabled cross_compile; then
3012     test -n "$arch" && test -n "$target_os" ||
3013         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3014 fi
3015
3016 ar_default="${cross_prefix}${ar_default}"
3017 cc_default="${cross_prefix}${cc_default}"
3018 objcc_default="${cross_prefix}${objcc_default}"
3019 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3020 nm_default="${cross_prefix}${nm_default}"
3021 pkg_config_default="${cross_prefix}${pkg_config_default}"
3022 ranlib="${cross_prefix}${ranlib}"
3023 strip="${cross_prefix}${strip}"
3024
3025 sysinclude_default="${sysroot}/usr/include"
3026
3027 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3028 enabled cross_compile || host_cc_default=$cc
3029 set_default host_cc
3030
3031 if ! $pkg_config --version >/dev/null 2>&1; then
3032     warn "$pkg_config not found, library detection may fail."
3033     pkg_config=false
3034 fi
3035
3036 exesuf() {
3037     case $1 in
3038         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3039     esac
3040 }
3041
3042 EXESUF=$(exesuf $target_os)
3043 HOSTEXESUF=$(exesuf $host_os)
3044
3045 # set temporary file name
3046 : ${TMPDIR:=$TEMPDIR}
3047 : ${TMPDIR:=$TMP}
3048 : ${TMPDIR:=/tmp}
3049
3050 if ! check_cmd mktemp -u XXXXXX; then
3051     # simple replacement for missing mktemp
3052     # NOT SAFE FOR GENERAL USE
3053     mktemp(){
3054         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3055         echo "$tmpname"
3056         mkdir "$tmpname"
3057     }
3058 fi
3059
3060 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3061     die "Unable to create temporary directory in $TMPDIR."
3062
3063 tmpfile(){
3064     tmp="${AVTMPDIR}/test"$2
3065     (set -C; exec > $tmp) 2> /dev/null ||
3066         die "Unable to create temporary file in $AVTMPDIR."
3067     eval $1=$tmp
3068 }
3069
3070 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3071 trap 'exit 2' INT
3072
3073 tmpfile TMPASM .asm
3074 tmpfile TMPC   .c
3075 tmpfile TMPE   $EXESUF
3076 tmpfile TMPH   .h
3077 tmpfile TMPO   .o
3078 tmpfile TMPS   .S
3079 tmpfile TMPSH  .sh
3080 tmpfile TMPV   .ver
3081
3082 unset -f mktemp
3083
3084 chmod +x $TMPE
3085
3086 # make sure we can execute files in $TMPDIR
3087 cat > $TMPSH 2>> $logfile <<EOF
3088 #! /bin/sh
3089 EOF
3090 chmod +x $TMPSH >> $logfile 2>&1
3091 if ! $TMPSH >> $logfile 2>&1; then
3092     cat <<EOF
3093 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3094 variable to another directory and make sure that it is not mounted noexec.
3095 EOF
3096     die "Sanity test failed."
3097 fi
3098
3099 armasm_flags(){
3100     for flag; do
3101         case $flag in
3102             # Filter out MSVC cl.exe options from cflags that shouldn't
3103             # be passed to gas-preprocessor
3104             -M[TD]*)                                            ;;
3105             *)                  echo $flag                      ;;
3106         esac
3107    done
3108 }
3109
3110 cparser_flags(){
3111     for flag; do
3112         case $flag in
3113             -Wno-switch)             echo -Wno-switch-enum ;;
3114             -Wno-format-zero-length) ;;
3115             -Wdisabled-optimization) ;;
3116             -Wno-pointer-sign)       echo -Wno-other ;;
3117             *)                       echo $flag ;;
3118         esac
3119     done
3120 }
3121
3122 msvc_common_flags(){
3123     for flag; do
3124         case $flag in
3125             # In addition to specifying certain flags under the compiler
3126             # specific filters, they must be specified here as well or else the
3127             # generic catch all at the bottom will print the original flag.
3128             -Wall)                ;;
3129             -Wextra)              ;;
3130             -std=c99)             ;;
3131             # Common flags
3132             -fomit-frame-pointer) ;;
3133             -g)                   echo -Z7 ;;
3134             -fno-math-errno)      ;;
3135             -fno-common)          ;;
3136             -fno-signed-zeros)    ;;
3137             -fPIC)                ;;
3138             -mthumb)              ;;
3139             -march=*)             ;;
3140             -lz)                  echo zlib.lib ;;
3141             -lx264)               echo libx264.lib ;;
3142             -l*)                  echo ${flag#-l}.lib ;;
3143             -L*)                  echo -libpath:${flag#-L} ;;
3144             *)                    echo $flag ;;
3145         esac
3146     done
3147 }
3148
3149 msvc_flags(){
3150     msvc_common_flags "$@"
3151     for flag; do
3152         case $flag in
3153             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3154                                        -wd4554 ;;
3155             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3156                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3157                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3158                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3159         esac
3160     done
3161 }
3162
3163 icl_flags(){
3164     msvc_common_flags "$@"
3165     for flag; do
3166         case $flag in
3167             # Despite what Intel's documentation says -Wall, which is supported
3168             # on Windows, does enable remarks so disable them here.
3169             -Wall)                echo $flag -Qdiag-disable:remark ;;
3170             -std=c99)             echo -Qstd=c99 ;;
3171         esac
3172     done
3173 }
3174
3175 pgi_flags(){
3176     for flag; do
3177         case $flag in
3178             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3179             -fomit-frame-pointer) echo -Mnoframe ;;
3180             -g)                   echo -gopt ;;
3181             *)                    echo $flag ;;
3182         esac
3183     done
3184 }
3185
3186 suncc_flags(){
3187     for flag; do
3188         case $flag in
3189             -march=*|-mcpu=*)
3190                 case "${flag#*=}" in
3191                     native)                   echo -xtarget=native       ;;
3192                     v9|niagara)               echo -xarch=sparc          ;;
3193                     ultrasparc)               echo -xarch=sparcvis       ;;
3194                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3195                     i586|pentium)             echo -xchip=pentium        ;;
3196                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3197                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3198                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3199                     pentium4*)          echo -xtarget=pentium4           ;;
3200                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3201                     *-sse3)             echo -xarch=sse3                 ;;
3202                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3203                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3204                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3205                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3206                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3207                     k8|opteron|athlon64|athlon-fx)
3208                                                echo -xarch=sse2a         ;;
3209                     athlon*)                   echo -xarch=pentium_proa  ;;
3210                 esac
3211                 ;;
3212             -std=c99)             echo -xc99              ;;
3213             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3214             -fPIC)                echo -KPIC -xcode=pic32 ;;
3215             -W*,*)                echo $flag              ;;
3216             -f*-*|-W*|-mimpure-text)                      ;;
3217             -shared)              echo -G                 ;;
3218             *)                    echo $flag              ;;
3219         esac
3220     done
3221 }
3222
3223 probe_cc(){
3224     pfx=$1
3225     _cc=$2
3226
3227     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3228     unset _ld_o _ldflags _ld_lib _ld_path
3229     unset _depflags _DEPCMD _DEPFLAGS
3230     _flags_filter=echo
3231
3232     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3233         _type=llvm_gcc
3234         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3235         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3237         _cflags_speed='-O3'
3238         _cflags_size='-Os'
3239     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3240         _type=gcc
3241         gcc_version=$($_cc --version | head -n1)
3242         gcc_basever=$($_cc -dumpversion)
3243         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3244         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3245         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3246         if ! $_cc -dumpversion | grep -q '^2\.'; then
3247             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3248         fi
3249         _cflags_speed='-O3'
3250         _cflags_size='-Os'
3251     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3252         _type=icc
3253         _ident=$($_cc --version | head -n1)
3254         _depflags='-MMD'
3255         _cflags_speed='-O3'
3256         _cflags_size='-Os'
3257         _cflags_noopt='-O1'
3258     elif $_cc -v 2>&1 | grep -q xlc; then
3259         _type=xlc
3260         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3261         _cflags_speed='-O5'
3262         _cflags_size='-O5 -qcompact'
3263     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3264         test -d "$sysroot" || die "No valid sysroot specified."
3265         _type=armcc
3266         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3267         armcc_conf="$PWD/armcc.conf"
3268         $_cc --arm_linux_configure                 \
3269              --arm_linux_config_file="$armcc_conf" \
3270              --configure_sysroot="$sysroot"        \
3271              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3272              die "Error creating armcc configuration file."
3273         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3274         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3275         as_default="${cross_prefix}gcc"
3276         _depflags='-MMD'
3277         _cflags_speed='-O3'
3278         _cflags_size='-Os'
3279     elif $_cc -v 2>&1 | grep -q clang; then
3280         _type=clang
3281         _ident=$($_cc --version 2>/dev/null | head -n1)
3282         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3283         _cflags_speed='-O3'
3284         _cflags_size='-Os'
3285     elif $_cc -V 2>&1 | grep -q Sun; then
3286         _type=suncc
3287         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3288         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3289         _DEPFLAGS='-xM1 -xc99'
3290         _ldflags='-std=c99'
3291         _cflags_speed='-O5'
3292         _cflags_size='-O5 -xspace'
3293         _flags_filter=suncc_flags
3294     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3295         _type=pathscale
3296         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3297         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3298         _cflags_speed='-O2'
3299         _cflags_size='-Os'
3300         _flags_filter='filter_out -Wdisabled-optimization'
3301     elif $_cc -v 2>&1 | grep -q Open64; then
3302         _type=open64
3303         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3304         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         _cflags_speed='-O2'
3306         _cflags_size='-Os'
3307         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3308     elif $_cc -V 2>&1 | grep -q Portland; then
3309         _type=pgi
3310         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3311         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3312         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3313         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3314         _cflags_noopt="-O1"
3315         _flags_filter=pgi_flags
3316     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3317         _type=armasm
3318         _ident=$($_cc | head -n1)
3319         # 4509: "This form of conditional instruction is deprecated"
3320         _flags="-nologo -ignore 4509"
3321         _flags_filter=armasm_flags
3322     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3323         _type=msvc
3324         _ident=$($_cc 2>&1 | head -n1)
3325         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3326         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3327         _cflags_speed="-O2"
3328         _cflags_size="-O1"
3329         _cflags_noopt="-O1"
3330         if $_cc -nologo- 2>&1 | grep -q Linker; then
3331             _ld_o='-out:$@'
3332         else
3333             _ld_o='-Fe$@'
3334         fi
3335         _cc_o='-Fo$@'
3336         _cc_e='-P -Fi$@'
3337         _flags_filter=msvc_flags
3338         _ld_lib='lib%.a'
3339         _ld_path='-libpath:'
3340         _flags='-nologo'
3341     elif $_cc 2>&1 | grep -q Intel; then
3342         _type=icl
3343         _ident=$($_cc 2>&1 | head -n1)
3344         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3345         # Not only is O3 broken on 13.x+ but it is slower on all previous
3346         # versions (tested) as well.
3347         _cflags_speed="-O2"
3348         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3349         if $_cc 2>&1 | grep -q Linker; then
3350             _ld_o='-out:$@'
3351         else
3352             _ld_o='-Fe$@'
3353         fi
3354         _cc_o='-Fo$@'
3355         _cc_e='-P'
3356         _flags_filter=icl_flags
3357         _ld_lib='lib%.a'
3358         _ld_path='-libpath:'
3359         # -Qdiag-error to make icl error when seeing certain unknown arguments
3360         _flags='-nologo -Qdiag-error:4044,10157'
3361         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3362         # with MSVC which enables it by default.
3363         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3364     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3365         # lld can emulate multiple different linkers; in ms link.exe mode,
3366         # the -? parameter gives the help output which contains an identifyable
3367         # string, while it gives an error in other modes.
3368         _type=lld-link
3369         # The link.exe mode doesn't have a switch for getting the version,
3370         # but we can force it back to gnu mode and get the version from there.
3371         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3372         _ld_o='-out:$@'
3373         _flags_filter=msvc_flags
3374         _ld_lib='lib%.a'
3375         _ld_path='-libpath:'
3376     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3377         _type=cparser
3378         _ident=$($_cc --version | head -n1)
3379         _depflags='-MMD'
3380         _cflags_speed='-O4'
3381         _cflags_size='-O2'
3382         _flags_filter=cparser_flags
3383     fi
3384
3385     eval ${pfx}_type=\$_type
3386     eval ${pfx}_ident=\$_ident
3387 }
3388
3389 set_ccvars(){
3390     eval ${1}_C=\${_cc_c-\${${1}_C}}
3391     eval ${1}_E=\${_cc_e-\${${1}_E}}
3392     eval ${1}_O=\${_cc_o-\${${1}_O}}
3393
3394     if [ -n "$_depflags" ]; then
3395         eval ${1}_DEPFLAGS=\$_depflags
3396     else
3397         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3398         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3399         eval DEP${1}FLAGS=\$_flags
3400     fi
3401 }
3402
3403 probe_cc cc "$cc"
3404 cflags_filter=$_flags_filter
3405 cflags_speed=$_cflags_speed
3406 cflags_size=$_cflags_size
3407 cflags_noopt=$_cflags_noopt
3408 add_cflags $_flags $_cflags
3409 cc_ldflags=$_ldflags
3410 set_ccvars CC
3411
3412 probe_cc hostcc "$host_cc"
3413 host_cflags_filter=$_flags_filter
3414 host_cflags_speed=$_cflags_speed
3415 add_host_cflags  $_flags $_cflags
3416 set_ccvars HOSTCC
3417
3418 test -n "$cc_type" && enable $cc_type ||
3419     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3420
3421 : ${as_default:=$cc}
3422 : ${objcc_default:=$cc}
3423 : ${dep_cc_default:=$cc}
3424 : ${ld_default:=$cc}
3425 : ${host_ld_default:=$host_cc}
3426 set_default ar as objcc dep_cc ld host_ld
3427
3428 probe_cc as "$as"
3429 asflags_filter=$_flags_filter
3430 add_asflags $_flags $_cflags
3431 set_ccvars AS
3432
3433 probe_cc objcc "$objcc"
3434 objcflags_filter=$_flags_filter
3435 add_objcflags $_flags $_cflags
3436 set_ccvars OBJC
3437
3438 probe_cc ld "$ld"
3439 ldflags_filter=$_flags_filter
3440 add_ldflags $_flags $_ldflags
3441 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3442 LD_O=${_ld_o-$LD_O}
3443 LD_LIB=${_ld_lib-$LD_LIB}
3444 LD_PATH=${_ld_path-$LD_PATH}
3445
3446 probe_cc hostld "$host_ld"
3447 host_ldflags_filter=$_flags_filter
3448 add_host_ldflags $_flags $_ldflags
3449 HOSTLD_O=${_ld_o-$HOSTLD_O}
3450
3451 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3452     probe_cc depcc "$dep_cc"
3453     CCDEP=${_DEPCMD:-$DEPCMD}
3454     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3455     DEPCCFLAGS=$_flags
3456 fi
3457
3458 if $ar 2>&1 | grep -q Microsoft; then
3459     arflags="-nologo"
3460     ar_o='-out:$@'
3461 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3462     arflags='-Xany -r -c'
3463     ar_o='$@'
3464 else
3465     arflags="rc"
3466     ar_o='$@'
3467 fi
3468
3469 add_cflags $extra_cflags
3470 add_objcflags $extra_objcflags
3471 add_asflags $extra_cflags
3472
3473 if test -n "$sysroot"; then
3474     case "$cc_type" in
3475         gcc|llvm_gcc|clang)
3476             add_cppflags --sysroot="$sysroot"
3477             add_ldflags --sysroot="$sysroot"
3478         ;;
3479     esac
3480 fi
3481
3482 if test "$cpu" = host; then
3483     enabled cross_compile &&
3484         die "--cpu=host makes no sense when cross-compiling."
3485
3486     case "$cc_type" in
3487         gcc|llvm_gcc)
3488             check_native(){
3489                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3490                 sed -n "/cc1.*$1=/{
3491                             s/.*$1=\\([^ ]*\\).*/\\1/
3492                             p
3493                             q
3494                         }" $TMPE
3495             }
3496             cpu=$(check_native -march || check_native -mcpu)
3497         ;;
3498     esac
3499
3500     test "${cpu:-host}" = host &&
3501         die "--cpu=host not supported with compiler $cc"
3502 fi
3503
3504 # Deal with common $arch aliases
3505 case "$arch" in
3506     aarch64|arm64)
3507         arch="aarch64"
3508     ;;
3509     arm*)
3510         arch="arm"
3511     ;;
3512     mips*|IP*)
3513         case "$arch" in
3514         *el)
3515             add_cppflags -EL
3516             add_ldflags -EL
3517         ;;
3518         *eb)
3519             add_cppflags -EB
3520             add_ldflags -EB
3521         ;;
3522         esac
3523         arch="mips"
3524     ;;
3525     parisc*|hppa*)
3526         arch="parisc"
3527     ;;
3528     "Power Macintosh"|ppc*|powerpc*)
3529         arch="ppc"
3530     ;;
3531     s390|s390x)
3532         arch="s390"
3533     ;;
3534     sh4|sh)
3535         arch="sh4"
3536     ;;
3537     sun4u|sparc*)
3538         arch="sparc"
3539     ;;
3540     tilegx|tile-gx)
3541         arch="tilegx"
3542     ;;
3543     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3544         arch="x86"
3545     ;;
3546 esac
3547
3548 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3549 enable $arch
3550
3551 # Add processor-specific flags
3552 if enabled aarch64; then
3553
3554     case $cpu in
3555         armv*)
3556             cpuflags="-march=$cpu"
3557         ;;
3558         *)
3559             cpuflags="-mcpu=$cpu"
3560         ;;
3561     esac
3562
3563 elif enabled alpha; then
3564
3565     cpuflags="-mcpu=$cpu"
3566
3567 elif enabled arm; then
3568
3569     check_arm_arch() {
3570         check_cpp_condition stddef.h \
3571             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3572             $cpuflags
3573     }
3574
3575     probe_arm_arch() {
3576         if   check_arm_arch 4;        then echo armv4
3577         elif check_arm_arch 4T;       then echo armv4t
3578         elif check_arm_arch 5;        then echo armv5
3579         elif check_arm_arch 5E;       then echo armv5e
3580         elif check_arm_arch 5T;       then echo armv5t
3581         elif check_arm_arch 5TE;      then echo armv5te
3582         elif check_arm_arch 5TEJ;     then echo armv5te
3583         elif check_arm_arch 6;        then echo armv6
3584         elif check_arm_arch 6J;       then echo armv6j
3585         elif check_arm_arch 6K;       then echo armv6k
3586         elif check_arm_arch 6Z;       then echo armv6z
3587         elif check_arm_arch 6ZK;      then echo armv6zk
3588         elif check_arm_arch 6T2;      then echo armv6t2
3589         elif check_arm_arch 7;        then echo armv7
3590         elif check_arm_arch 7A  7_A;  then echo armv7-a
3591         elif check_arm_arch 7S;       then echo armv7-a
3592         elif check_arm_arch 7R  7_R;  then echo armv7-r
3593         elif check_arm_arch 7M  7_M;  then echo armv7-m
3594         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3595         elif check_arm_arch 8A  8_A;  then echo armv8-a
3596         fi
3597     }
3598
3599     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3600
3601     case $cpu in
3602         armv*)
3603             cpuflags="-march=$cpu"
3604             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3605         ;;
3606         *)
3607             cpuflags="-mcpu=$cpu"
3608             case $cpu in
3609                 cortex-a*)                               subarch=armv7a  ;;
3610                 cortex-r*)                               subarch=armv7r  ;;
3611                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3612                 arm11*)                                  subarch=armv6   ;;
3613                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3614                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3615                 *)                             subarch=$(probe_arm_arch) ;;
3616             esac
3617         ;;
3618     esac
3619
3620     case "$subarch" in
3621         armv5t*)    enable fast_clz                ;;
3622         armv[6-8]*) enable fast_clz fast_unaligned ;;
3623     esac
3624
3625 elif enabled avr32; then
3626
3627     case $cpu in
3628         ap7[02]0[0-2])
3629             subarch="avr32_ap"
3630             cpuflags="-mpart=$cpu"
3631         ;;
3632         ap)
3633             subarch="avr32_ap"
3634             cpuflags="-march=$cpu"
3635         ;;
3636         uc3[ab]*)
3637             subarch="avr32_uc"
3638             cpuflags="-mcpu=$cpu"
3639         ;;
3640         uc)
3641             subarch="avr32_uc"
3642             cpuflags="-march=$cpu"
3643         ;;
3644     esac
3645
3646 elif enabled bfin; then
3647
3648     cpuflags="-mcpu=$cpu"
3649
3650 elif enabled mips; then
3651
3652     cpuflags="-march=$cpu"
3653
3654 elif enabled ppc; then
3655
3656     disable ldbrx
3657
3658     case $(tolower $cpu) in
3659         601|ppc601|powerpc601)
3660             cpuflags="-mcpu=601"
3661             disable altivec
3662         ;;
3663         603*|ppc603*|powerpc603*)
3664             cpuflags="-mcpu=603"
3665             disable altivec
3666         ;;
3667         604*|ppc604*|powerpc604*)
3668             cpuflags="-mcpu=604"
3669             disable altivec
3670         ;;
3671         g3|75*|ppc75*|powerpc75*)
3672             cpuflags="-mcpu=750"
3673             disable altivec
3674         ;;
3675         g4|745*|ppc745*|powerpc745*)
3676             cpuflags="-mcpu=7450"
3677             disable vsx
3678         ;;
3679         74*|ppc74*|powerpc74*)
3680             cpuflags="-mcpu=7400"
3681             disable vsx
3682         ;;
3683         g5|970|ppc970|powerpc970)
3684             cpuflags="-mcpu=970"
3685             disable vsx
3686         ;;
3687         power[3-6]*)
3688             cpuflags="-mcpu=$cpu"
3689             disable vsx
3690         ;;
3691         power[7-8]*)
3692             cpuflags="-mcpu=$cpu"
3693             enable ldbrx
3694         ;;
3695         cell)
3696             cpuflags="-mcpu=cell"
3697             enable ldbrx
3698             disable vsx
3699         ;;
3700         e500mc)
3701             cpuflags="-mcpu=e500mc"
3702             disable altivec
3703         ;;
3704         e500v2)
3705             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3706             disable altivec
3707             disable dcbzl
3708         ;;
3709         e500)
3710             cpuflags="-mcpu=8540 -mhard-float"
3711             disable altivec
3712             disable dcbzl
3713         ;;
3714     esac
3715
3716 elif enabled sparc; then
3717
3718     case $cpu in
3719         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3720             cpuflags="-mcpu=$cpu"
3721         ;;
3722         ultrasparc*|niagara[234])
3723             cpuflags="-mcpu=$cpu"
3724         ;;
3725     esac
3726
3727 elif enabled x86; then
3728
3729     case $cpu in
3730         i[345]86|pentium)
3731             cpuflags="-march=$cpu"
3732             disable i686
3733             disable mmx
3734         ;;
3735         # targets that do NOT support nopl and conditional mov (cmov)
3736         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3737             cpuflags="-march=$cpu"
3738             disable i686
3739         ;;
3740         # targets that do support nopl and conditional mov (cmov)
3741         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3742             cpuflags="-march=$cpu"
3743             enable i686
3744             enable fast_cmov
3745         ;;
3746         # targets that do support conditional mov but on which it's slow
3747         pentium4|pentium4m|prescott|nocona)
3748             cpuflags="-march=$cpu"
3749             enable i686
3750             disable fast_cmov
3751         ;;
3752     esac
3753
3754 fi
3755
3756 if [ "$cpu" != generic ]; then
3757     add_cflags  $cpuflags
3758     add_asflags $cpuflags
3759     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3760 fi
3761
3762 # compiler sanity check
3763 check_exec <<EOF
3764 int main(void){ return 0; }
3765 EOF
3766 if test "$?" != 0; then
3767     echo "$cc is unable to create an executable file."
3768     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3769         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3770         echo "Only do this if you know what cross compiling means."
3771     fi
3772     die "C compiler test failed."
3773 fi
3774
3775 add_cppflags -D_ISOC99_SOURCE
3776
3777 # some compilers silently accept -std=c11, so we also need to check that the
3778 # version macro is defined properly
3779 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3780     add_cflags -std=c11 ||
3781     check_cflags -std=c99
3782
3783 check_cppflags -D_FILE_OFFSET_BITS=64
3784 check_cppflags -D_LARGEFILE_SOURCE
3785
3786 add_host_cppflags -D_ISOC99_SOURCE
3787 check_host_cflags -std=c99
3788 check_host_cflags -Wall
3789 check_host_cflags $host_cflags_speed
3790
3791 check_64bit(){
3792     arch32=$1
3793     arch64=$2
3794     expr=$3
3795     check_code cc "" "int test[2*($expr) - 1]" &&
3796         subarch=$arch64 || subarch=$arch32
3797 }
3798
3799 case "$arch" in
3800     aarch64|alpha|ia64)
3801         spic=$shared
3802     ;;
3803     mips)
3804         check_64bit mips mips64 '_MIPS_SIM > 1'
3805         spic=$shared
3806     ;;
3807     parisc)
3808         check_64bit parisc parisc64 'sizeof(void *) > 4'
3809         spic=$shared
3810     ;;
3811     ppc)
3812         check_64bit ppc ppc64 'sizeof(void *) > 4'
3813         spic=$shared
3814     ;;
3815     s390)
3816         check_64bit s390 s390x 'sizeof(void *) > 4'
3817         spic=$shared
3818     ;;
3819     sparc)
3820         check_64bit sparc sparc64 'sizeof(void *) > 4'
3821         spic=$shared
3822     ;;
3823     x86)
3824         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3825         if test "$subarch" = "x86_64"; then
3826             spic=$shared
3827         fi
3828     ;;
3829 esac
3830
3831 enable $subarch
3832 enabled spic && enable_weak pic
3833
3834 enabled x86_64 && objformat=elf64 || objformat="elf32"
3835
3836 # OS specific
3837 case $target_os in
3838     aix)
3839         SHFLAGS=-shared
3840         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3841         enabled shared && add_ldflags -Wl,-brtl
3842         ;;
3843     android)
3844         disable symver
3845         enable section_data_rel_ro
3846         SLIB_INSTALL_NAME='$(SLIBNAME)'
3847         SLIB_INSTALL_LINKS=
3848         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3849         ;;
3850     haiku)
3851         prefix_default="/boot/common"
3852         network_extralibs="-lnetwork"
3853         host_extralibs=
3854         ;;
3855     sunos)
3856         SHFLAGS='-shared -Wl,-h,$$(@F)'
3857         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3858         network_extralibs="-lsocket -lnsl"
3859         # When using suncc to build, the Solaris linker will mark
3860         # an executable with each instruction set encountered by
3861         # the Solaris assembler.  As our libraries contain their own
3862         # guards for processor-specific code, instead suppress
3863         # generation of the HWCAPS ELF section on Solaris x86 only.
3864         enabled_all suncc x86 &&
3865             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3866             add_ldflags -Wl,-M,mapfile
3867         nm_default='nm -P -g'
3868         version_script='-M'
3869         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3870         ;;
3871     netbsd)
3872         disable symver
3873         oss_indev_extralibs="-lossaudio"
3874         ;;
3875     openbsd|bitrig)
3876         disable symver
3877         SHFLAGS='-shared'
3878         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3879         SLIB_INSTALL_LINKS=
3880         oss_indev_extralibs="-lossaudio"
3881         ;;
3882     dragonfly)
3883         disable symver
3884         ;;
3885     freebsd)
3886         ;;
3887     bsd/os)
3888         add_extralibs -lpoll -lgnugetopt
3889         ;;
3890     darwin)
3891         enabled ppc && add_asflags -force_cpusubtype_ALL
3892         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3893         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3894         add_ldflags -Wl,-dynamic,-search_paths_first
3895         check_cflags -Werror=partial-availability
3896         SLIBSUF=".dylib"
3897         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3898         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3899         enabled x86_64 && objformat="macho64" || objformat="macho32"
3900         enabled_any pic shared ||
3901             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3902         check_header dispatch/dispatch.h &&
3903             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3904         if test -n "$sysroot"; then
3905             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3906             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3907         fi
3908         ;;
3909     msys*)
3910         die "Native MSYS builds are discouraged, please use the MINGW environment."
3911         ;;
3912     mingw32*|mingw64*)
3913         target_os=mingw32
3914         LIBTARGET=i386
3915         if enabled x86_64; then
3916             LIBTARGET="i386:x86-64"
3917         fi
3918         if enabled shared; then
3919             # Cannot build both shared and static libs when using dllexport.
3920             disable static
3921         fi
3922         check_ldflags -Wl,--nxcompat
3923         check_ldflags -Wl,--dynamicbase
3924         shlibdir_default="$bindir_default"
3925         SLIBPREF=""
3926         SLIBSUF=".dll"
3927         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3928         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3929         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3930         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3931         SLIB_INSTALL_LINKS=
3932         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3933         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3934         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3935         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3936         enabled x86_64 && objformat="win64" || objformat="win32"
3937         dlltool="${cross_prefix}dlltool"
3938         ranlib=:
3939         enable dos_paths
3940         ;;
3941     win32|win64)
3942         disable symver
3943         if enabled shared; then
3944             # Link to the import library instead of the normal static library
3945             # for shared libs.
3946             LD_LIB='%.lib'
3947             # Cannot build both shared and static libs with MSVC or icl.
3948             disable static
3949         fi
3950         shlibdir_default="$bindir_default"
3951         SLIBPREF=""
3952         SLIBSUF=".dll"
3953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3955         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3956         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3957         SLIB_INSTALL_LINKS=
3958         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3959         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3960         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3961         enabled x86_64 && objformat="win64" || objformat="win32"
3962         ranlib=:
3963         enable dos_paths
3964         ;;
3965     cygwin*)
3966         target_os=cygwin
3967         shlibdir_default="$bindir_default"
3968         SLIBPREF="cyg"
3969         SLIBSUF=".dll"
3970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3972         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3973         SLIB_INSTALL_LINKS=
3974         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3975         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3976         enabled x86_64 && objformat="win64" || objformat="win32"
3977         enable dos_paths
3978         ;;
3979     *-dos|freedos|opendos)
3980         network_extralibs="-lsocket"
3981         objformat="coff"
3982         enable dos_paths
3983         add_cppflags -U__STRICT_ANSI__
3984         ;;
3985     linux)
3986         enable section_data_rel_ro
3987         ;;
3988     irix*)
3989         target_os=irix
3990         ranlib="echo ignoring ranlib"
3991         ;;
3992     os/2*)
3993         ln_s="cp -f"
3994         objformat="aout"
3995         add_cppflags -D_GNU_SOURCE
3996         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
3997         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3998         LIBSUF="_s.a"
3999         SLIBPREF=""
4000         SLIBSUF=".dll"
4001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4003         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4004             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4005             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4006             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4007             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4008         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4009             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4010         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4011         enable dos_paths
4012         ;;
4013     gnu/kfreebsd)
4014         add_cppflags -D_BSD_SOURCE
4015         ;;
4016     gnu)
4017         ;;
4018     qnx)
4019         add_cppflags -D_QNX_SOURCE
4020         network_extralibs="-lsocket"
4021         ;;
4022     symbian)
4023         SLIBSUF=".dll"
4024         enable dos_paths
4025         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4026         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4027         add_ldflags -Wl,--target1-abs,--no-undefined \
4028                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4029                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4030         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4031                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4032                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4033         ;;
4034     minix)
4035         ;;
4036     none)
4037         ;;
4038     *)
4039         die "Unknown OS '$target_os'."
4040         ;;
4041 esac
4042
4043 # determine libc flavour
4044
4045 probe_libc(){
4046     pfx=$1
4047     pfx_no_=${pfx%_}
4048     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4049     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4050         eval ${pfx}libc_type=uclibc
4051         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4052     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4053         eval ${pfx}libc_type=glibc
4054         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4055     # MinGW headers can be installed on Cygwin, so check for newlib first.
4056     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4057         eval ${pfx}libc_type=newlib
4058         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4059     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4060     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4061         eval ${pfx}libc_type=mingw64
4062         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4063         eval test \$${pfx_no_}cc_type = "gcc" &&
4064             add_${pfx}cppflags -D__printf__=__gnu_printf__
4065     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4066          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4067         eval ${pfx}libc_type=mingw32
4068         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4069             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4070             die "ERROR: MinGW32 runtime version must be >= 3.15."
4071         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4072         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4073             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4074         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4075             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4076         eval test \$${pfx_no_}cc_type = "gcc" &&
4077             add_${pfx}cppflags -D__printf__=__gnu_printf__
4078     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4079         eval ${pfx}libc_type=msvcrt
4080         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4081             if [ "$pfx" = host_ ]; then
4082                 add_host_cppflags -Dsnprintf=_snprintf
4083             else
4084                 add_compat strtod.o strtod=avpriv_strtod
4085                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4086                                              _snprintf=avpriv_snprintf  \
4087                                              vsnprintf=avpriv_vsnprintf
4088             fi
4089         fi
4090         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4091         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4092         # 0x601 by default unless something else is set by the user.
4093         # This can easily lead to us detecting functions only present
4094         # in such new versions and producing binaries requiring windows 7.0.
4095         # Therefore explicitly set the default to XP unless the user has
4096         # set something else on the command line.
4097         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4098         # family. For these cases, configure is free to use any functions
4099         # found in the SDK headers by default. (Alternatively, we could force
4100         # _WIN32_WINNT to 0x0602 in that case.)
4101         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4102             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4103 #ifdef WINAPI_FAMILY
4104 #include <winapifamily.h>
4105 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4106 #error not desktop
4107 #endif
4108 #endif
4109 EOF
4110         if [ "$pfx" = "" ]; then
4111             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4112         fi
4113     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4114         eval ${pfx}libc_type=klibc
4115     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4116         eval ${pfx}libc_type=bionic
4117     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4118         eval ${pfx}libc_type=solaris
4119         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4120     else
4121         eval ${pfx}libc_type=default
4122         add_${pfx}cppflags -D_DEFAULT_SOURCE
4123     fi
4124     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4125 }
4126
4127 probe_libc
4128 probe_libc host_
4129
4130 # hacks for compiler/libc/os combinations
4131
4132 case $libc_type in
4133     bionic)
4134         add_compat strtod.o strtod=avpriv_strtod
4135         ;;
4136 esac
4137
4138 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4139     add_cppflags '-I\$(SRC_PATH)/compat/float'
4140
4141 esc(){
4142     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4143 }
4144
4145 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4146
4147 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4148
4149 set_default $PATHS_LIST
4150 set_default nm
4151
4152 disabled optimizations || check_cflags -fomit-frame-pointer
4153
4154 enable_weak_pic() {
4155     disabled pic && return
4156     enable pic
4157     add_cppflags -DPIC
4158     case "$target_os" in
4159     mingw*|cygwin*|win*)
4160         ;;
4161     *)
4162         add_cflags -fPIC
4163         add_asflags -fPIC
4164         ;;
4165     esac
4166 }
4167
4168 enabled pic && enable_weak_pic
4169
4170 check_cc <<EOF || die "Symbol mangling check failed."
4171 int ff_extern;
4172 EOF
4173 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4174 extern_prefix=${sym%%ff_extern*}
4175
4176 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4177
4178 _restrict=
4179 for restrict_keyword in restrict __restrict__ __restrict; do
4180     check_cc <<EOF && _restrict=$restrict_keyword && break
4181 void foo(char * $restrict_keyword p);
4182 EOF
4183 done
4184
4185 check_cc <<EOF && enable pragma_deprecated
4186 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4187 EOF
4188
4189 check_cc <<EOF || die "endian test failed"
4190 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4191 EOF
4192 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4193
4194 check_gas() {
4195     log "check_gas using '$as' as AS"
4196     # :vararg is used on aarch64, arm and ppc altivec
4197     check_as <<EOF || return 1
4198 .macro m n, y:vararg=0
4199 \n: .int \y
4200 .endm
4201 m x
4202 EOF
4203     # .altmacro is only used in arm asm
4204     ! enabled arm || check_as <<EOF || return 1
4205 .altmacro
4206 EOF
4207     enable gnu_as
4208     return 0
4209 }
4210
4211 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4212     nogas=:
4213     enabled_any arm aarch64 && nogas=die
4214     enabled_all ppc altivec && nogas=warn
4215     as_noop=-v
4216
4217     case $as_type in
4218         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4219         gcc)  gaspp_as_type=gas ;;
4220         *)    gaspp_as_type=$as_type ;;
4221     esac
4222
4223     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4224
4225     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4226         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4227
4228     if ! check_gas ; then
4229         as=${gas:=$as}
4230         check_gas || \
4231             $nogas "GNU assembler not found, install/update gas-preprocessor"
4232     fi
4233
4234     check_as <<EOF && enable as_func
4235 .func test
4236 .endfunc
4237 EOF
4238 fi
4239
4240 check_inline_asm inline_asm_labels '"1:\n"'
4241
4242 if enabled aarch64; then
4243     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4244     # internal assembler in clang 3.3 does not support this instruction
4245     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4246     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4247
4248     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4249
4250 elif enabled alpha; then
4251
4252     check_cflags -mieee
4253
4254 elif enabled arm; then
4255
4256     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4257     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4258     enabled thumb && check_cflags -mthumb || check_cflags -marm
4259
4260     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4261         enable vfp_args
4262     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4263         enable vfp_args
4264     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4265         case "${cross_prefix:-$cc}" in
4266             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4267             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4268 __asm__ (".eabi_attribute 28, 1");
4269 int main(void) { return 0; }
4270 EOF
4271         esac
4272         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4273     fi
4274
4275     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4276     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4277     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4278     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4279     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4280     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4281
4282     [ $target_os = linux ] || [ $target_os = android ] ||
4283         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4284             $ARCH_EXT_LIST_ARM
4285
4286     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4287
4288     check_as <<EOF && enable as_arch_directive
4289 .arch armv7-a
4290 EOF
4291     check_as <<EOF && enable as_fpu_directive
4292 .fpu neon
4293 EOF
4294
4295     # llvm's integrated assembler supports .object_arch from llvm 3.5
4296     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4297         check_as <<EOF && enable as_object_arch
4298 .object_arch armv4
4299 EOF
4300
4301     # MS armasm fails to assemble our PIC constructs
4302     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4303
4304 elif enabled mips; then
4305
4306     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4307
4308     # make sure that only an instruction set is enabled
4309     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4310
4311     if enabled mips64; then
4312         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4313             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4314                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4315     else
4316         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4317             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4318                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4319     fi
4320
4321 elif enabled parisc; then
4322
4323     if enabled gcc; then
4324         case $($cc -dumpversion) in
4325             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4326         esac
4327     fi
4328
4329 elif enabled ppc; then
4330
4331     enable local_aligned_8 local_aligned_16 local_aligned_32
4332
4333     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4334     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4335     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4336     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4337
4338     if enabled altivec; then
4339         check_cflags -maltivec -mabi=altivec
4340
4341         # check if our compiler supports Motorola AltiVec C API
4342         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4343                                  vector signed int v2 = (vector signed int) { 1 };
4344                                  v1 = vec_add(v1, v2);" ||
4345             disable altivec
4346
4347         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4348     fi
4349
4350     if enabled vsx; then
4351         check_cflags -mvsx &&
4352         check_code cc altivec.h "int v[4] = { 0 };
4353                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4354             disable vsx
4355     fi
4356
4357     if enabled power8; then
4358         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4359     fi
4360
4361 elif enabled x86; then
4362
4363     check_builtin rdtsc    intrin.h   "__rdtsc()"
4364     check_builtin mm_empty mmintrin.h "_mm_empty()"
4365
4366     enable local_aligned_8 local_aligned_16 local_aligned_32
4367
4368     # check whether EBP is available on x86
4369     # As 'i' is stored on the stack, this program will crash
4370     # if the base pointer is used to access it because the
4371     # base pointer is cleared in the inline assembly code.
4372     check_exec_crash <<EOF && enable ebp_available
4373 volatile int i=0;
4374 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4375 return i;
4376 EOF
4377
4378     # check whether EBX is available on x86
4379     check_inline_asm ebx_available '""::"b"(0)' &&
4380         check_inline_asm ebx_available '"":::"%ebx"'
4381
4382     # check whether xmm clobbers are supported
4383     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4384
4385     # check whether binutils is new enough to compile SSSE3/MMXEXT
4386     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4387     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4388
4389     probe_x86asm(){
4390         x86asmexe_probe=$1
4391         if check_cmd $x86asmexe_probe -v; then
4392             x86asmexe=$x86asmexe_probe
4393             x86asm_type=nasm
4394             x86asm_debug="-g -F dwarf"
4395             X86ASMDEP=
4396             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4397         elif check_cmd $x86asmexe_probe --version; then
4398             x86asmexe=$x86asmexe_probe
4399             x86asm_type=yasm
4400             x86asm_debug="-g dwarf2"
4401             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4402             X86ASM_DEPFLAGS=
4403         fi
4404         check_x86asm "movbe ecx, [5]" && enable x86asm
4405     }
4406
4407     if ! disabled_any asm mmx x86asm; then
4408         disable x86asm
4409         for program in $x86asmexe nasm yasm; do
4410             probe_x86asm $program && break
4411         done
4412         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4413         X86ASMFLAGS="-f $objformat"
4414         enabled pic               && append X86ASMFLAGS "-DPIC"
4415         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4416         case "$objformat" in
4417             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4418         esac
4419
4420         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4421         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4422         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4423         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4424         check_x86asm "CPU amdnop"                      || disable cpunop
4425     fi
4426
4427     case "$cpu" in
4428         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4429             disable fast_clz
4430         ;;
4431     esac
4432
4433 fi
4434
4435 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4436
4437 check_ldflags -Wl,--as-needed
4438
4439 if ! disabled network; then
4440     check_func getaddrinfo $network_extralibs
4441     check_func inet_aton $network_extralibs
4442
4443     check_type netdb.h "struct addrinfo"
4444     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4445     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4446     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4447     check_type poll.h "struct pollfd"
4448     check_type netinet/sctp.h "struct sctp_event_subscribe"
4449     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4450     check_type netinet/in.h "struct sockaddr_in6"
4451     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4452     check_type "sys/types.h sys/socket.h" socklen_t
4453
4454     # Prefer arpa/inet.h over winsock2
4455     if check_header arpa/inet.h ; then
4456         check_func closesocket
4457     elif check_header winsock2.h ; then
4458         check_func_headers winsock2.h closesocket -lws2 &&
4459             network_extralibs="-lws2" ||
4460         { check_func_headers winsock2.h closesocket -lws2_32 &&
4461             network_extralibs="-lws2_32"; } || disable winsock2_h network
4462         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4463
4464         check_type ws2tcpip.h socklen_t
4465         check_type ws2tcpip.h "struct addrinfo"
4466         check_type ws2tcpip.h "struct group_source_req"
4467         check_type ws2tcpip.h "struct ip_mreq_source"
4468         check_type ws2tcpip.h "struct ipv6_mreq"
4469         check_type winsock2.h "struct pollfd"
4470         check_struct winsock2.h "struct sockaddr" sa_len
4471         check_type ws2tcpip.h "struct sockaddr_in6"
4472         check_type ws2tcpip.h "struct sockaddr_storage"
4473     else
4474         disable network
4475     fi
4476 fi
4477
4478 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4479 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4480 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4481 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4482
4483 case "$custom_allocator" in
4484     jemalloc)
4485         # jemalloc by default does not use a prefix
4486         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4487     ;;
4488     tcmalloc)
4489         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4490         malloc_prefix=tc_
4491     ;;
4492 esac
4493
4494 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4495 check_func  ${malloc_prefix}memalign            && enable memalign
4496 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4497
4498 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4499     { check_lib clock_gettime time.h clock_gettime ||
4500       check_lib clock_gettime time.h clock_gettime -lrt; }
4501
4502 check_func  fcntl
4503 check_func  gethrtime
4504 check_func  getopt
4505 check_func  getrusage
4506 check_func  gettimeofday
4507 check_func  gmtime_r
4508 check_func  isatty
4509 check_func  localtime_r
4510 check_func  mkstemp
4511 check_func  mmap
4512 check_func  mprotect
4513 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4514 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4515 check_func  sched_getaffinity
4516 check_func  setrlimit
4517 check_func  strerror_r
4518 check_func  sysconf
4519 check_func  sysctl
4520 check_func  usleep
4521
4522 check_func_headers io.h setmode
4523 check_func_headers mach/mach_time.h mach_absolute_time
4524 check_func_headers stdlib.h getenv
4525
4526 check_func_headers windows.h GetProcessAffinityMask
4527 check_func_headers windows.h GetProcessTimes
4528 check_func_headers windows.h GetSystemTimeAsFileTime
4529 check_func_headers windows.h LoadLibrary
4530 check_func_headers windows.h MapViewOfFile
4531 check_func_headers windows.h SetConsoleTextAttribute
4532 check_func_headers windows.h Sleep
4533 check_func_headers windows.h VirtualAlloc
4534 check_struct windows.h "CONDITION_VARIABLE" Ptr
4535
4536 check_header direct.h
4537 check_header dxgidebug.h
4538 check_header dxva.h
4539 check_header dxva2api.h
4540 check_header io.h
4541 check_header malloc.h
4542 check_header poll.h
4543 check_header sys/param.h
4544 check_header sys/resource.h
4545 check_header sys/select.h
4546 check_header sys/time.h
4547 check_header sys/un.h
4548 check_header unistd.h
4549 check_header valgrind/valgrind.h
4550 check_header VideoDecodeAcceleration/VDADecoder.h
4551 check_header windows.h
4552
4553 # it seems there are versions of clang in some distros that try to use the
4554 # gcc headers, which explodes for stdatomic
4555 # so we also check that atomics actually work here
4556 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4557
4558 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4559 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4560 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4561 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4562
4563 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4564
4565 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4566 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4567 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4568
4569 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4570 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4571 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4572
4573 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4574 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4575 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4576 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4577 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4578 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4579 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4580 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4581 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4582
4583 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4584
4585 if ! disabled w32threads && ! enabled pthreads; then
4586     check_lib w32threads "windows.h process.h" _beginthreadex
4587 fi
4588
4589 # check for some common methods of building with pthread support
4590 # do this before the optional library checks as some of them require pthreads
4591 if ! disabled pthreads && ! enabled w32threads; then
4592     if check_lib pthreads pthread.h pthread_join -pthread; then
4593         add_cflags -pthread
4594     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4595         add_cflags -pthreads
4596     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4597         :
4598     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4599         :
4600     elif check_func pthread_join; then
4601         enable pthreads
4602     fi
4603 fi
4604
4605 enabled pthreads &&
4606     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4607
4608 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4609 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4610
4611 # On some systems dynamic loading requires no extra linker flags
4612 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4613
4614 check_lib libm math.h sin -lm
4615
4616 atan2f_args=2
4617 ldexpf_args=2
4618 powf_args=2
4619
4620 for func in $MATH_FUNCS; do
4621     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4622 done
4623
4624 # these are off by default, so fail if requested and not available
4625 enabled avisynth          && require_header avisynth/avisynth_c.h
4626 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4627 enabled cuda              && require cuda cuda.h cuInit -lcuda
4628 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4629 enabled frei0r            && require_header frei0r.h
4630 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4631                              check_lib gmp gmp.h mpz_export -lgmp
4632 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4633 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4634 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4635 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4636 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4637 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4638 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4639 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4640 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4641 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4642 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4643 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4644 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4645 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4646 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4647 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4648 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4649 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4650 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4651                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4652 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4653 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4654 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4655 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4656 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4657 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4658 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4659 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4660 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4661 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4662 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4663 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4664                              { enabled libvpx_vp8_decoder &&
4665                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4666                                enabled libvpx_vp8_encoder &&
4667                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4668                                enabled libvpx_vp9_decoder &&
4669                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4670                                enabled libvpx_vp9_encoder &&
4671                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4672                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4673                                    die "libvpx enabled but no supported decoders/encoders found"
4674                              }
4675 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4676 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4677 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4678                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4679                              { check_cpp_condition x264.h "X264_MPEG2" &&
4680                                enable libx262; }
4681 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4682                              require_cpp_condition x265.h "X265_BUILD >= 57"
4683 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4684 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4685 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4686                                { ! enabled cross_compile &&
4687                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4688                                  add_ldflags -L/opt/vc/lib/ &&
4689                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4690                                die "ERROR: mmal not found" &&
4691                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4692 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4693 enabled omx               && require_header OMX_Core.h
4694 enabled omx_rpi           && { check_header OMX_Core.h ||
4695                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4696                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4697 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4698                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4699                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4700                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4701                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4702                                die "ERROR: openssl not found"; }
4703
4704 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4705 enabled avplay &&
4706     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4707
4708 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4709 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4710
4711 check_header linux/fb.h
4712 check_header linux/videodev2.h
4713 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4714
4715 check_header AVFoundation/AVFoundation.h
4716
4717 check_header sys/videoio.h
4718
4719 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4720 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4721 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4722 # w32api 3.12 had it defined wrong
4723 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4724
4725 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4726 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4727     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4728     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4729     check_header "dev/ic/bt8xx.h"
4730
4731 check_header sys/soundcard.h
4732
4733 enabled alsa_indev &&
4734     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4735
4736 enabled libjack &&
4737     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4738
4739 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4740
4741 if enabled libcdio; then
4742     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4743     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4744     die "ERROR: No usable libcdio/cdparanoia found"
4745 fi
4746
4747 if enabled libxcb; then
4748     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4749     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4750     disabled libxcb_shm ||
4751         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4752     disabled libxcb_xfixes ||
4753         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4754 fi
4755
4756 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4757 # the desktop api partition
4758 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4759 #ifdef WINAPI_FAMILY
4760 #include <winapifamily.h>
4761 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4762 #error desktop, not uwp
4763 #else
4764 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4765 #endif
4766 #else
4767 #error no family set
4768 #endif
4769 EOF
4770
4771 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4772
4773 enabled vaapi &&
4774     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4775     disable vaapi
4776
4777 enabled vaapi &&
4778     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4779
4780 enabled vaapi &&
4781     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4782
4783 enabled vaapi &&
4784     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4785     enable vaapi_1
4786
4787 enabled vdpau &&
4788     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4789     disable vdpau
4790
4791 enabled vdpau &&
4792     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4793
4794 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4795
4796 # add some useful compiler flags if supported
4797 check_cflags -Wdeclaration-after-statement
4798 check_cflags -Wall
4799 check_cflags -Wdisabled-optimization
4800 check_cflags -Wpointer-arith
4801 check_cflags -Wredundant-decls
4802 check_cflags -Wwrite-strings
4803 check_cflags -Wtype-limits
4804 check_cflags -Wundef
4805 check_cflags -Wmissing-prototypes
4806 check_cflags -Wstrict-prototypes
4807
4808 if enabled extra_warnings; then
4809     check_cflags -Wcast-qual
4810     check_cflags -Wextra
4811     check_cflags -Wpedantic
4812 fi
4813
4814 check_disable_warning(){
4815     warning_flag=-W${1#-Wno-}
4816     test_cflags $warning_flag && add_cflags $1
4817 }
4818
4819 check_disable_warning -Wno-parentheses
4820 check_disable_warning -Wno-switch
4821 check_disable_warning -Wno-format-zero-length
4822 check_disable_warning -Wno-pointer-sign
4823
4824 check_disable_warning_headers(){
4825     warning_flag=-W${1#-Wno-}
4826     test_cflags $warning_flag && add_cflags_headers $1
4827 }
4828
4829 check_disable_warning_headers -Wno-deprecated-declarations
4830 check_disable_warning_headers -Wno-unused-variable
4831
4832 check_objcflags -fobjc-arc && enable objc_arc
4833
4834 check_cc <<EOF && enable blocks_extension
4835 void (^block)(void);