95e60064401e1bb1a09aa199083a98662ce45285
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libhdcd           HDCD decoding filter
201   --enable-libilbc           ILBC audio encoding/decoding
202   --enable-libjack           JACK audio sound server
203   --enable-libkvazaar        HEVC video encoding
204   --enable-libmp3lame        MP3 audio encoding
205   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
206   --enable-libopencore-amrwb AMR-WB audio decoding
207   --enable-libopencv         computer vision
208   --enable-libopenh264       H.264 video encoding/decoding
209   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
210   --enable-libopus           Opus audio encoding/decoding
211   --enable-libpulse          Pulseaudio sound server
212   --enable-librtmp           RTMP streaming
213   --enable-libschroedinger   Dirac video encoding/decoding
214   --enable-libsnappy         snappy compression
215   --enable-libspeex          Speex audio encoding/decoding
216   --enable-libtheora         Theora video encoding/decoding
217   --enable-libtwolame        MP2 audio encoding
218   --enable-libvo-aacenc      AAC audio encoding
219   --enable-libvo-amrwbenc    AMR-WB audio encoding
220   --enable-libvorbis         Vorbis audio encoding/decoding
221   --enable-libvpx            VP* video encoding/decoding
222   --enable-libwavpack        Wavpack audio encoding/decoding
223   --enable-libwebp           WebP image encoding/decoding
224   --enable-libx264           H.264 video encoding
225   --enable-libx265           HEVC video encoding
226   --enable-libxavs           Chinese AVS video encoding
227   --enable-libxcb            X window system protocol communication
228   --enable-libxcb-shm        X11 shm communication [auto]
229   --enable-libxcb-xfixes     X11 mouse rendering [auto]
230   --enable-libxvid           MPEG-4 ASP video encoding
231   --enable-openssl           crypto
232   --enable-zlib              compression [autodetect]
233
234   The following libraries provide various hardware acceleration features:
235   --enable-amf     AMF video encoding code [auto]
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-cuvid   Nvidia CUVID video decode acceleration
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --x86asmexe=X86ASM       use x86 assembler X86ASM
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
285   --extra-libs=ELIBS       add ELIBS [$ELIBS]
286   --extra-version=STRING   version string suffix []
287   --optflags=OPTFLAGS      override optimization-related compiler flags
288   --enable-pic             build position-independent code
289   --enable-thumb           compile for Thumb instruction set
290   --enable-lto             use link-time optimization
291   --env="ENV=override"     override the environment variables
292
293 Advanced options (experts only):
294   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
295   --custom-allocator=NAME  use a supported custom allocator
296   --disable-symver         disable symbol versioning
297   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
298   --disable-safe-bitstream-reader
299                            disable buffer boundary checking in bitreaders
300                            (faster, but may crash)
301   --enable-sram            allow use of on-chip SRAM
302
303 Optimization options (experts only):
304   --disable-asm            disable all assembly optimizations
305   --disable-altivec        disable AltiVec optimizations
306   --disable-vsx            disable VSX optimizations
307   --disable-power8         disable POWER8 optimizations
308   --disable-amd3dnow       disable 3DNow! optimizations
309   --disable-amd3dnowext    disable 3DNow! extended optimizations
310   --disable-mmx            disable MMX optimizations
311   --disable-mmxext         disable MMXEXT optimizations
312   --disable-sse            disable SSE optimizations
313   --disable-sse2           disable SSE2 optimizations
314   --disable-sse3           disable SSE3 optimizations
315   --disable-ssse3          disable SSSE3 optimizations
316   --disable-sse4           disable SSE4 optimizations
317   --disable-sse42          disable SSE4.2 optimizations
318   --disable-avx            disable AVX optimizations
319   --disable-xop            disable XOP optimizations
320   --disable-fma3           disable FMA3 optimizations
321   --disable-fma4           disable FMA4 optimizations
322   --disable-avx2           disable AVX2 optimizations
323   --disable-armv5te        disable armv5te optimizations
324   --disable-armv6          disable armv6 optimizations
325   --disable-armv6t2        disable armv6t2 optimizations
326   --disable-vfp            disable VFP optimizations
327   --disable-neon           disable NEON optimizations
328   --disable-inline-asm     disable use of inline assembly
329   --disable-x86asm         disable use of standalone x86 assembly
330
331 Developer options (useful when working on Libav itself):
332   --disable-debug          disable debugging symbols
333   --enable-debug=LEVEL     set the debug level [$debuglevel]
334   --disable-optimizations  disable compiler optimizations
335   --enable-extra-warnings  enable more compiler warnings
336   --samples=PATH           location of test samples for FATE, if not set use
337                            \$LIBAV_SAMPLES at make invocation time.
338   --enable-neon-clobber-test check NEON registers for clobbering (should be
339                            used only for debugging purposes)
340   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
341                            should be used only for debugging purposes)
342   --disable-valgrind-backtrace do not print a backtrace under Valgrind
343                            (only applies to --disable-optimizations builds)
344   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
345                            in the name) of tests whose result is ignored
346
347 NOTE: Object files are built at the place where configure is launched.
348 EOF
349   exit 0
350 }
351
352 log(){
353     echo "$@" >> $logfile
354 }
355
356 log_file(){
357     log BEGIN $1
358     i=1
359     while read line; do
360         printf '%5s   %s\n' "${i}" "${line}"
361         i=$(($i+1))
362     done < $1 >> $logfile
363     log END $1
364 }
365
366 echolog(){
367     log "$@"
368     echo "$@"
369 }
370
371 warn(){
372     log "WARNING: $*"
373     WARNINGS="${WARNINGS}WARNING: $*\n"
374 }
375
376 die(){
377     echolog "$@"
378     cat <<EOF
379
380 If you think configure made a mistake, make sure you are using the latest
381 version from Git.  If the latest version fails, report the problem to the
382 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
383 EOF
384     if disabled logging; then
385         cat <<EOF
386 Rerun configure with logging enabled (do not use --disable-logging), and
387 include the log this produces with your report.
388 EOF
389     else
390         cat <<EOF
391 Include the log file "$logfile" produced by configure as this will help
392 solving the problem.
393 EOF
394     fi
395     exit 1
396 }
397
398 # Avoid locale weirdness, besides we really just want to translate ASCII.
399 toupper(){
400     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
401 }
402
403 tolower(){
404     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
405 }
406
407 c_escape(){
408     echo "$*" | sed 's/["\\]/\\\0/g'
409 }
410
411 sh_quote(){
412     v=$(echo "$1" | sed "s/'/'\\\\''/g")
413     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
414     echo "$v"
415 }
416
417 cleanws(){
418     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
419 }
420
421 filter(){
422     pat=$1
423     shift
424     for v; do
425         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
426     done
427 }
428
429 filter_out(){
430     pat=$1
431     shift
432     for v; do
433         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
434     done
435 }
436
437 map(){
438     m=$1
439     shift
440     for v; do eval $m; done
441 }
442
443 add_suffix(){
444     suffix=$1
445     shift
446     for v; do echo ${v}${suffix}; done
447 }
448
449 set_all(){
450     value=$1
451     shift
452     for var in $*; do
453         eval $var=$value
454     done
455 }
456
457 set_weak(){
458     value=$1
459     shift
460     for var; do
461         eval : \${$var:=$value}
462     done
463 }
464
465 sanitize_var_name(){
466     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
467 }
468
469 set_sanitized(){
470     var=$1
471     shift
472     eval $(sanitize_var_name "$var")='$*'
473 }
474
475 get_sanitized(){
476     eval echo \$$(sanitize_var_name "$1")
477 }
478
479 pushvar(){
480     for pvar in $*; do
481         eval level=\${${pvar}_level:=0}
482         eval ${pvar}_${level}="\$$pvar"
483         eval ${pvar}_level=$(($level+1))
484     done
485 }
486
487 popvar(){
488     for pvar in $*; do
489         eval level=\${${pvar}_level:-0}
490         test $level = 0 && continue
491         eval level=$(($level-1))
492         eval $pvar="\${${pvar}_${level}}"
493         eval ${pvar}_level=$level
494         eval unset ${pvar}_${level}
495     done
496 }
497
498 enable(){
499     set_all yes $*
500 }
501
502 disable(){
503     set_all no $*
504 }
505
506 enable_weak(){
507     set_weak yes $*
508 }
509
510 disable_weak(){
511     set_weak no $*
512 }
513
514 enable_sanitized(){
515     for var; do
516         enable $(sanitize_var_name $var)
517     done
518 }
519
520 disable_sanitized(){
521     for var; do
522         disable $(sanitize_var_name $var)
523     done
524 }
525
526 do_enable_deep(){
527     for var; do
528         enabled $var && continue
529         eval sel="\$${var}_select"
530         eval sgs="\$${var}_suggest"
531         pushvar var sgs
532         enable_deep $sel
533         popvar sgs
534         enable_deep_weak $sgs
535         popvar var
536     done
537 }
538
539 enable_deep(){
540     do_enable_deep $*
541     enable $*
542 }
543
544 enable_deep_weak(){
545     for var; do
546         disabled $var && continue
547         pushvar var
548         do_enable_deep $var
549         popvar var
550         enable_weak $var
551     done
552 }
553
554 enabled(){
555     test "${1#!}" = "$1" && op="=" || op="!="
556     eval test "x\$${1#!}" $op "xyes"
557 }
558
559 disabled(){
560     test "${1#!}" = "$1" && op="=" || op="!="
561     eval test "x\$${1#!}" $op "xno"
562 }
563
564 enabled_all(){
565     for opt; do
566         enabled $opt || return 1
567     done
568 }
569
570 disabled_all(){
571     for opt; do
572         disabled $opt || return 1
573     done
574 }
575
576 enabled_any(){
577     for opt; do
578         enabled $opt && return 0
579     done
580 }
581
582 disabled_any(){
583     for opt; do
584         disabled $opt && return 0
585     done
586     return 1
587 }
588
589 set_default(){
590     for opt; do
591         eval : \${$opt:=\$${opt}_default}
592     done
593 }
594
595 is_in(){
596     value=$1
597     shift
598     for var in $*; do
599         [ $var = $value ] && return 0
600     done
601     return 1
602 }
603
604 check_deps(){
605     for cfg; do
606         enabled ${cfg}_checking && die "Circular dependency for $cfg."
607         disabled ${cfg}_checking && continue
608         enable ${cfg}_checking
609
610         eval dep_all="\$${cfg}_deps"
611         eval dep_any="\$${cfg}_deps_any"
612         eval dep_con="\$${cfg}_conflict"
613         eval dep_sel="\$${cfg}_select"
614         eval dep_sgs="\$${cfg}_suggest"
615         eval dep_ifa="\$${cfg}_if"
616         eval dep_ifn="\$${cfg}_if_any"
617
618         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
619         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
620         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
621
622         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
623         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
624         enabled_all  $dep_all || disable $cfg
625         enabled_any  $dep_any || disable $cfg
626         disabled_all $dep_con || disable $cfg
627         disabled_any $dep_sel && disable $cfg
628
629         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
630
631         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
632             # filter out library deps, these do not belong in extralibs
633             is_in $dep $LIBRARY_LIST && continue
634             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
635         done
636
637         disable ${cfg}_checking
638     done
639 }
640
641 print_config(){
642     pfx=$1
643     files=$2
644     shift 2
645     map 'eval echo "$v \${$v:-no}"' "$@" |
646     awk "BEGIN { split(\"$files\", files) }
647         {
648             c = \"$pfx\" toupper(\$1);
649             v = \$2;
650             sub(/yes/, 1, v);
651             sub(/no/,  0, v);
652             for (f in files) {
653                 file = files[f];
654                 if (file ~ /\\.h\$/) {
655                     printf(\"#define %s %d\\n\", c, v) >>file;
656                 } else if (file ~ /\\.asm\$/) {
657                     printf(\"%%define %s %d\\n\", c, v) >>file;
658                 } else if (file ~ /\\.mak\$/) {
659                     n = -v ? \"\" : \"!\";
660                     printf(\"%s%s=yes\\n\", n, c) >>file;
661                 }
662             }
663         }"
664 }
665
666 print_enabled(){
667     suf=$1
668     shift
669     for v; do
670         enabled $v && printf "%s\n" ${v%$suf}
671     done
672 }
673
674 append(){
675     var=$1
676     shift
677     eval "$var=\"\$$var $*\""
678 }
679
680 prepend(){
681     var=$1
682     shift
683     eval "$var=\"$* \$$var\""
684 }
685
686 unique(){
687     var=$1
688     uniq_list=""
689     for tok in $(eval echo \$$var); do
690         uniq_list="$(filter_out $tok $uniq_list) $tok"
691     done
692     eval "$var=\"${uniq_list}\""
693 }
694
695 resolve(){
696     var=$1
697     tmpvar=
698     for entry in $(eval echo \$$var); do
699         tmpvar="$tmpvar $(eval echo \$${entry})"
700     done
701     eval "$var=\"${tmpvar}\""
702 }
703
704 add_cppflags(){
705     append CPPFLAGS "$@"
706 }
707
708 add_cflags(){
709     append CFLAGS $($cflags_filter "$@")
710 }
711
712 add_cflags_headers(){
713     append CFLAGS_HEADERS $($cflags_filter "$@")
714 }
715
716 add_asflags(){
717     append ASFLAGS $($asflags_filter "$@")
718 }
719
720 add_objcflags(){
721     append OBJCFLAGS $($objcflags_filter "$@")
722 }
723
724 add_ldflags(){
725     append LDFLAGS $($ldflags_filter "$@")
726 }
727
728 add_ldexeflags(){
729     append LDEXEFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldsoflags(){
733     append LDSOFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append STRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 test_cmd(){
763     log "$@"
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' $CC_E
773 }
774
775 test_cc(){
776     log test_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 test_objcc(){
783     log test_objcc "$@"
784     cat > $TMPC
785     log_file $TMPC
786     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
787 }
788
789 test_cpp(){
790     log test_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 test_as(){
801     log test_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_cmd(){
808     log check_cmd "$@"
809     cmd=$1
810     disabled $cmd && return
811     disable $cmd
812     test_cmd $@ && enable $cmd
813 }
814
815 check_as(){
816     log check_as "$@"
817     name=$1
818     code=$2
819     shift 2
820     disable $name
821     test_as $@ <<EOF && enable $name
822 $code
823 EOF
824 }
825
826 check_inline_asm(){
827     log check_inline_asm "$@"
828     name="$1"
829     code="$2"
830     shift 2
831     disable $name
832     test_cc "$@" <<EOF && enable $name
833 void foo(void){ __asm__ volatile($code); }
834 EOF
835 }
836
837 check_insn(){
838     log check_insn "$@"
839     check_inline_asm ${1}_inline "$2"
840     check_as ${1}_external "$2"
841 }
842
843 test_x86asm(){
844     log test_x86asm "$@"
845     echo "$1" > $TMPS
846     log_file $TMPS
847     shift 1
848     test_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
849 }
850
851 ld_o(){
852     eval printf '%s\\n' $LD_O
853 }
854
855 test_ld(){
856     log test_ld "$@"
857     flags=$(filter_out '-l*' "$@")
858     libs=$(filter '-l*' "$@")
859     test_cc $($cflags_filter $flags) || return
860     flags=$($ldflags_filter $flags)
861     libs=$($ldflags_filter $libs)
862     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
863 }
864
865 check_ld(){
866     log check_ld "$@"
867     name=$1
868     shift
869     disable $name
870     test_ld $@ && enable $name
871 }
872
873 print_include(){
874     hdr=$1
875     test "${hdr%.h}" = "${hdr}" &&
876         echo "#include $hdr"    ||
877         echo "#include <$hdr>"
878 }
879
880 test_code(){
881     log test_code "$@"
882     check=$1
883     headers=$2
884     code=$3
885     shift 3
886     {
887         for hdr in $headers; do
888             print_include $hdr
889         done
890         echo "int main(void) { $code; return 0; }"
891     } | test_$check "$@"
892 }
893
894 check_cppflags(){
895     log check_cppflags "$@"
896     test_cpp "$@" <<EOF && add_cppflags "$@"
897 #include <stdlib.h>;
898 EOF
899 }
900
901 test_cflags(){
902     log test_cflags "$@"
903     set -- $($cflags_filter "$@")
904     test_cc "$@" <<EOF
905 int x;
906 EOF
907 }
908
909 check_cflags(){
910     log check_cflags "$@"
911     test_cflags "$@" && add_cflags "$@"
912 }
913
914 test_objcflags(){
915     log test_objcflags "$@"
916     set -- $($objcflags_filter "$@")
917     test_objcc "$@" <<EOF
918 int x;
919 EOF
920 }
921
922 check_objcflags(){
923     log check_objcflags "$@"
924     test_objcflags "$@" && add_objcflags "$@"
925 }
926
927 test_ldflags(){
928     log test_ldflags "$@"
929     set -- $($ldflags_filter "$@")
930     test_ld "$@" <<EOF
931 int main(void){ return 0; }
932 EOF
933 }
934
935 check_ldflags(){
936     log check_ldflags "$@"
937     test_ldflags "$@" && add_ldflags "$@"
938 }
939
940 test_stripflags(){
941     log test_stripflags "$@"
942     # call test_cc to get a fresh TMPO
943     test_cc <<EOF
944 int main(void) { return 0; }
945 EOF
946     test_cmd $strip $STRIPFLAGS "$@" $TMPO
947 }
948
949 check_stripflags(){
950     log check_stripflags "$@"
951     test_stripflags "$@" && add_stripflags "$@"
952 }
953
954 check_header(){
955     log check_header "$@"
956     headers=$1
957     shift
958     disable_sanitized $headers
959     {
960         for hdr in $headers; do
961             print_include $hdr
962         done
963         echo "int x;"
964     } | test_cpp "$@" && enable_sanitized $headers
965 }
966
967 check_func(){
968     log check_func "$@"
969     func=$1
970     shift
971     disable $func
972     test_ld "$@" <<EOF && enable $func
973 extern int $func();
974 int main(void){ $func(); }
975 EOF
976 }
977
978 check_mathfunc(){
979     log check_mathfunc "$@"
980     func=$1
981     narg=$2
982     shift 2
983     test $narg = 2 && args="f, g" || args="f"
984     disable $func
985     test_ld "$@" <<EOF && enable $func
986 #include <math.h>
987 float foo(float f, float g) { return $func($args); }
988 int main(void){ return 0; }
989 EOF
990 }
991
992 check_func_headers(){
993     log check_func_headers "$@"
994     headers=$1
995     funcs=$2
996     shift 2
997     {
998         for hdr in $headers; do
999             print_include $hdr
1000         done
1001         for func in $funcs; do
1002             echo "long check_$func(void) { return (long) $func; }"
1003         done
1004         echo "int main(void) { return 0; }"
1005     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1006 }
1007
1008 test_cpp_condition(){
1009     log test_cpp_condition "$@"
1010     header=$1
1011     condition=$2
1012     shift 2
1013     test_cpp "$@" <<EOF
1014 #include <$header>
1015 #if !($condition)
1016 #error "unsatisfied condition: $condition"
1017 #endif
1018 EOF
1019 }
1020
1021 check_cpp_condition(){
1022     log check_cpp_condition "$@"
1023     name=$1
1024     shift 1
1025     disable $name
1026     test_cpp_condition "$@" && enable $name
1027 }
1028
1029 test_cflags_cpp(){
1030     log test_cflags_cpp "$@"
1031     flags=$1
1032     condition=$2
1033     shift 2
1034     set -- $($cflags_filter "$flags")
1035     test_cpp "$@" <<EOF
1036 #if !($condition)
1037 #error "unsatisfied condition: $condition"
1038 #endif
1039 EOF
1040 }
1041
1042 check_lib(){
1043     log check_lib "$@"
1044     name="$1"
1045     headers="$2"
1046     funcs="$3"
1047     shift 3
1048     disable $name
1049     check_func_headers "$headers" "$funcs" "$@" &&
1050         enable $name && eval ${name}_extralibs="\$@"
1051 }
1052
1053 test_pkg_config(){
1054     log test_pkg_config "$@"
1055     name="$1"
1056     pkg_version="$2"
1057     pkg="${2%% *}"
1058     headers="$3"
1059     funcs="$4"
1060     shift 4
1061     disable $name
1062     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1063     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1064     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1065     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1066         enable $name &&
1067         set_sanitized "${name}_cflags"    $pkg_cflags &&
1068         set_sanitized "${name}_extralibs" $pkg_libs
1069 }
1070
1071 check_pkg_config(){
1072     log check_pkg_config "$@"
1073     name="$1"
1074     test_pkg_config "$@" &&
1075         eval add_cflags \$${name}_cflags
1076 }
1077
1078 test_exec(){
1079     log test_exec "$@"
1080     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1081 }
1082
1083 check_exec_crash(){
1084     log check_exec_crash "$@"
1085     code=$(cat)
1086
1087     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1088     # are safe but may not be available everywhere.  Thus we use
1089     # raise(SIGTERM) instead.  The check is run in a subshell so we
1090     # can redirect the "Terminated" message from the shell.  SIGBUS
1091     # is not defined by standard C so it is used conditionally.
1092
1093     (test_exec "$@") >> $logfile 2>&1 <<EOF
1094 #include <signal.h>
1095 static void sighandler(int sig){
1096     raise(SIGTERM);
1097 }
1098 int foo(void){
1099     $code
1100 }
1101 int (*func_ptr)(void) = foo;
1102 int main(void){
1103     signal(SIGILL, sighandler);
1104     signal(SIGFPE, sighandler);
1105     signal(SIGSEGV, sighandler);
1106 #ifdef SIGBUS
1107     signal(SIGBUS, sighandler);
1108 #endif
1109     return func_ptr();
1110 }
1111 EOF
1112 }
1113
1114 check_type(){
1115     log check_type "$@"
1116     headers=$1
1117     type=$2
1118     shift 2
1119     disable_sanitized "$type"
1120     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1121 }
1122
1123 check_struct(){
1124     log check_struct "$@"
1125     headers=$1
1126     struct=$2
1127     member=$3
1128     shift 3
1129     disable_sanitized "${struct}_${member}"
1130     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1131         enable_sanitized "${struct}_${member}"
1132 }
1133
1134 check_builtin(){
1135     log check_builtin "$@"
1136     name=$1
1137     shift
1138     disable "$name"
1139     test_code ld "$@" && enable "$name"
1140 }
1141
1142 check_compile_assert(){
1143     log check_compile_assert "$@"
1144     name=$1
1145     headers=$2
1146     condition=$3
1147     shift 3
1148     disable "$name"
1149     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1150 }
1151
1152 check_cc(){
1153     log check_cc "$@"
1154     name=$1
1155     shift
1156     disable "$name"
1157     test_code cc "$@" && enable "$name"
1158 }
1159
1160 require(){
1161     log require "$@"
1162     name_version="$1"
1163     name="${1%% *}"
1164     shift
1165     check_lib $name "$@" || die "ERROR: $name_version not found"
1166 }
1167
1168 require_cc(){
1169     log require_cc "$@"
1170     name="$1"
1171     shift
1172     test_code cc "$@" || die "ERROR: $name failed"
1173 }
1174
1175 require_header(){
1176     log require_header "$@"
1177     headers="$1"
1178     check_header "$@" || die "ERROR: $headers not found"
1179 }
1180
1181 require_cpp_condition(){
1182     log require_cpp_condition "$@"
1183     condition="$2"
1184     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1185 }
1186
1187 require_pkg_config(){
1188     log require_pkg_config "$@"
1189     pkg_version="$2"
1190     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1191 }
1192
1193 hostcc_e(){
1194     eval printf '%s\\n' $HOSTCC_E
1195 }
1196
1197 hostcc_o(){
1198     eval printf '%s\\n' $HOSTCC_O
1199 }
1200
1201 test_host_cc(){
1202     log test_host_cc "$@"
1203     cat > $TMPC
1204     log_file $TMPC
1205     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1206 }
1207
1208 test_host_cpp(){
1209     log test_host_cpp "$@"
1210     cat > $TMPC
1211     log_file $TMPC
1212     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1213 }
1214
1215 check_host_cppflags(){
1216     log check_host_cppflags "$@"
1217     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1218 #include <stdlib.h>;
1219 EOF
1220 }
1221
1222 check_host_cflags(){
1223     log check_host_cflags "$@"
1224     set -- $($host_cflags_filter "$@")
1225     test_host_cc "$@" <<EOF && append host_cflags "$@"
1226 int x;
1227 EOF
1228 }
1229
1230 test_host_cpp_condition(){
1231     log test_host_cpp_condition "$@"
1232     header=$1
1233     condition=$2
1234     shift 2
1235     test_host_cpp "$@" <<EOF
1236 #include <$header>
1237 #if !($condition)
1238 #error "unsatisfied condition: $condition"
1239 #endif
1240 EOF
1241 }
1242
1243 check_host_cpp_condition(){
1244     log check_host_cpp_condition "$@"
1245     name=$1
1246     shift 1
1247     disable $name
1248     test_host_cpp_condition "$@" && enable $name
1249 }
1250
1251 cp_if_changed(){
1252     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1253     mkdir -p "$(dirname $2)"
1254     cp -f "$1" "$2"
1255 }
1256
1257 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1258 # system-dependent things.
1259
1260 AVCODEC_COMPONENTS="
1261     bsfs
1262     decoders
1263     encoders
1264     hwaccels
1265     parsers
1266 "
1267
1268 AVDEVICE_COMPONENTS="
1269     indevs
1270 "
1271 AVFILTER_COMPONENTS="
1272     filters
1273 "
1274 AVFORMAT_COMPONENTS="
1275     demuxers
1276     muxers
1277     protocols
1278 "
1279
1280 COMPONENT_LIST="
1281     $AVCODEC_COMPONENTS
1282     $AVDEVICE_COMPONENTS
1283     $AVFILTER_COMPONENTS
1284     $AVFORMAT_COMPONENTS
1285 "
1286
1287 EXAMPLE_LIST="
1288     decode_audio_example
1289     decode_video_example
1290     encode_audio_example
1291     encode_video_example
1292     filter_audio_example
1293     metadata_example
1294     output_example
1295     qsvdec_example
1296     transcode_aac_example
1297 "
1298
1299 # catchall list of things that require external libs to link
1300 EXTRALIBS_LIST="
1301     cpu_init
1302     cws2fws
1303 "
1304
1305 HWACCEL_LIBRARY_NONFREE_LIST="
1306     cuda
1307     cuvid
1308     libnpp
1309 "
1310 HWACCEL_LIBRARY_LIST="
1311     $HWACCEL_LIBRARY_NONFREE_LIST
1312     amf
1313     d3d11va
1314     dxva2
1315     libmfx
1316     mmal
1317     nvenc
1318     omx
1319     vaapi
1320     vda
1321     vdpau
1322 "
1323
1324 EXTERNAL_LIBRARY_GPL_LIST="
1325     libcdio
1326     libx264
1327     libx265
1328     libxavs
1329     libxvid
1330 "
1331
1332 EXTERNAL_LIBRARY_NONFREE_LIST="
1333     libfaac
1334     libfdk_aac
1335     openssl
1336 "
1337
1338 EXTERNAL_LIBRARY_VERSION3_LIST="
1339     libopencore_amrnb
1340     libopencore_amrwb
1341     libvo_aacenc
1342     libvo_amrwbenc
1343 "
1344
1345 EXTERNAL_LIBRARY_LIST="
1346     $EXTERNAL_LIBRARY_GPL_LIST
1347     $EXTERNAL_LIBRARY_NONFREE_LIST
1348     $EXTERNAL_LIBRARY_VERSION3_LIST
1349     avisynth
1350     avxsynth
1351     frei0r
1352     gnutls
1353     libaom
1354     libbs2b
1355     libdc1394
1356     libdcadec
1357     libfontconfig
1358     libfreetype
1359     libgsm
1360     libhdcd
1361     libilbc
1362     libjack
1363     libkvazaar
1364     libmp3lame
1365     libopencv
1366     libopenh264
1367     libopenjpeg
1368     libopus
1369     libpulse
1370     librtmp
1371     libschroedinger
1372     libsnappy
1373     libspeex
1374     libtheora
1375     libtwolame
1376     libvorbis
1377     libvpx
1378     libwavpack
1379     libwebp
1380     libxcb
1381     libxcb_shm
1382     libxcb_xfixes
1383 "
1384
1385 SYSTEM_LIBRARY_LIST="
1386     bzlib
1387     zlib
1388 "
1389
1390 FEATURE_LIST="
1391     gray
1392     hardcoded_tables
1393     omx_rpi
1394     runtime_cpudetect
1395     safe_bitstream_reader
1396     shared
1397     small
1398     sram
1399     static
1400     swscale_alpha
1401 "
1402
1403 LIBRARY_LIST="
1404     avcodec
1405     avdevice
1406     avfilter
1407     avformat
1408     avresample
1409     avutil
1410     swscale
1411 "
1412
1413 LICENSE_LIST="
1414     gpl
1415     nonfree
1416     version3
1417 "
1418
1419 PROGRAM_LIST="
1420     avconv
1421     avplay
1422     avprobe
1423 "
1424
1425 SUBSYSTEM_LIST="
1426     dct
1427     doc
1428     error_resilience
1429     faan
1430     fft
1431     lsp
1432     lzo
1433     mdct
1434     network
1435     rdft
1436 "
1437
1438 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1439 CONFIG_LIST="
1440     $EXAMPLE_LIST
1441     $EXTERNAL_LIBRARY_LIST
1442     $HWACCEL_LIBRARY_LIST
1443     $FEATURE_LIST
1444     $LICENSE_LIST
1445     $LIBRARY_LIST
1446     $PROGRAM_LIST
1447     $SUBSYSTEM_LIST
1448     $SYSTEM_LIBRARY_LIST
1449     neon_clobber_test
1450     pic
1451     pod2man
1452     texi2html
1453     thumb
1454     valgrind_backtrace
1455     xmm_clobber_test
1456     $COMPONENT_LIST
1457 "
1458
1459 THREADS_LIST="
1460     pthreads
1461     w32threads
1462 "
1463
1464 ATOMICS_LIST="
1465     atomics_gcc
1466     atomics_suncc
1467     atomics_win32
1468 "
1469
1470 ARCH_LIST="
1471     aarch64
1472     alpha
1473     arm
1474     avr32
1475     avr32_ap
1476     avr32_uc
1477     bfin
1478     ia64
1479     m68k
1480     mips
1481     mips64
1482     parisc
1483     ppc
1484     ppc64
1485     s390
1486     sh4
1487     sparc
1488     sparc64
1489     tilegx
1490     tilepro
1491     tomi
1492     x86
1493     x86_32
1494     x86_64
1495 "
1496
1497 ARCH_EXT_LIST_ARM="
1498     armv5te
1499     armv6
1500     armv6t2
1501     armv8
1502     neon
1503     vfp
1504     vfpv3
1505 "
1506
1507 ARCH_EXT_LIST_X86_SIMD="
1508     amd3dnow
1509     amd3dnowext
1510     avx
1511     avx2
1512     fma3
1513     fma4
1514     mmx
1515     mmxext
1516     sse
1517     sse2
1518     sse3
1519     sse4
1520     sse42
1521     ssse3
1522     xop
1523 "
1524
1525 ARCH_EXT_LIST_PPC="
1526     altivec
1527     dcbzl
1528     ldbrx
1529     power8
1530     ppc4xx
1531     vsx
1532 "
1533
1534 ARCH_EXT_LIST_X86="
1535     $ARCH_EXT_LIST_X86_SIMD
1536     cpunop
1537     i686
1538 "
1539
1540 ARCH_EXT_LIST_MIPS="
1541     loongson
1542     mips32r1
1543     mips64r1
1544     mips32r2
1545     mips64r2
1546     mips32r6
1547     mips64r6
1548 "
1549
1550 ARCH_EXT_LIST="
1551     $ARCH_EXT_LIST_ARM
1552     $ARCH_EXT_LIST_MIPS
1553     $ARCH_EXT_LIST_PPC
1554     $ARCH_EXT_LIST_X86
1555     vis
1556 "
1557
1558 ARCH_FEATURES="
1559     aligned_stack
1560     fast_64bit
1561     fast_clz
1562     fast_cmov
1563     local_aligned_8
1564     local_aligned_16
1565     local_aligned_32
1566     simd_align_16
1567     simd_align_32
1568 "
1569
1570 BUILTIN_LIST="
1571     atomic_cas_ptr
1572     machine_rw_barrier
1573     MemoryBarrier
1574     mm_empty
1575     rdtsc
1576     sem_timedwait
1577     sync_val_compare_and_swap
1578 "
1579 HAVE_LIST_CMDLINE="
1580     inline_asm
1581     symver
1582     x86asm
1583 "
1584
1585 HAVE_LIST_PUB="
1586     bigendian
1587     fast_unaligned
1588 "
1589
1590 HEADERS_LIST="
1591     AVFoundation_AVFoundation_h
1592     arpa_inet_h
1593     cdio_paranoia_h
1594     cdio_paranoia_paranoia_h
1595     dispatch_dispatch_h
1596     dev_bktr_ioctl_bt848_h
1597     dev_bktr_ioctl_meteor_h
1598     dev_ic_bt8xx_h
1599     dev_video_bktr_ioctl_bt848_h
1600     dev_video_meteor_ioctl_meteor_h
1601     direct_h
1602     dxgidebug_h
1603     dxva_h
1604     io_h
1605     machine_ioctl_bt848_h
1606     machine_ioctl_meteor_h
1607     malloc_h
1608     poll_h
1609     sys_param_h
1610     sys_resource_h
1611     sys_select_h
1612     sys_soundcard_h
1613     sys_time_h
1614     sys_un_h
1615     sys_videoio_h
1616     unistd_h
1617     valgrind_valgrind_h
1618     windows_h
1619     winsock2_h
1620 "
1621
1622 INTRINSICS_LIST="
1623     intrinsics_neon
1624 "
1625
1626 MATH_FUNCS="
1627     atanf
1628     atan2f
1629     cbrtf
1630     cosf
1631     exp2
1632     exp2f
1633     expf
1634     isinf
1635     isnan
1636     ldexpf
1637     llrint
1638     llrintf
1639     log2
1640     log2f
1641     log10f
1642     lrint
1643     lrintf
1644     powf
1645     rint
1646     round
1647     roundf
1648     sinf
1649     trunc
1650     truncf
1651 "
1652
1653 SYSTEM_FEATURES="
1654     dos_paths
1655     libc_msvcrt
1656     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1657     section_data_rel_ro
1658     threads
1659     uwp
1660 "
1661
1662 SYSTEM_FUNCS="
1663     aligned_malloc
1664     clock_gettime
1665     closesocket
1666     CommandLineToArgvW
1667     fcntl
1668     getaddrinfo
1669     gethrtime
1670     getopt
1671     GetProcessAffinityMask
1672     GetProcessMemoryInfo
1673     GetProcessTimes
1674     getrusage
1675     GetSystemTimeAsFileTime
1676     gettimeofday
1677     gmtime_r
1678     inet_aton
1679     isatty
1680     localtime_r
1681     mach_absolute_time
1682     MapViewOfFile
1683     memalign
1684     mmap
1685     mprotect
1686     nanosleep
1687     posix_memalign
1688     sched_getaffinity
1689     SetConsoleTextAttribute
1690     setmode
1691     setrlimit
1692     Sleep
1693     strerror_r
1694     sysconf
1695     sysctl
1696     usleep
1697     VirtualAlloc
1698 "
1699
1700 SYSTEM_LIBRARIES="
1701     sdl
1702     vaapi_1
1703     vaapi_drm
1704     vaapi_x11
1705     vdpau_x11
1706     wincrypt
1707 "
1708
1709 TOOLCHAIN_FEATURES="
1710     as_arch_directive
1711     as_fpu_directive
1712     as_func
1713     as_object_arch
1714     asm_mod_q
1715     blocks_extension
1716     ebp_available
1717     ebx_available
1718     gnu_as
1719     ibm_asm
1720     inline_asm_labels
1721     pragma_deprecated
1722     symver_asm_label
1723     symver_gnu_asm
1724     vfp_args
1725     xform_asm
1726     xmm_clobbers
1727 "
1728
1729 TYPES_LIST="
1730     CONDITION_VARIABLE_Ptr
1731     CUVIDDECODECREATEINFO_bitDepthMinus8
1732     socklen_t
1733     struct_addrinfo
1734     struct_group_source_req
1735     struct_ip_mreq_source
1736     struct_ipv6_mreq
1737     struct_pollfd
1738     struct_rusage_ru_maxrss
1739     struct_sockaddr_in6
1740     struct_sockaddr_sa_len
1741     struct_sockaddr_storage
1742     struct_v4l2_frmivalenum_discrete
1743 "
1744
1745 HAVE_LIST="
1746     $ARCH_EXT_LIST
1747     $(add_suffix _external $ARCH_EXT_LIST)
1748     $(add_suffix _inline   $ARCH_EXT_LIST)
1749     $ARCH_FEATURES
1750     $BUILTIN_LIST
1751     $HAVE_LIST_CMDLINE
1752     $HAVE_LIST_PUB
1753     $HEADERS_LIST
1754     $INTRINSICS_LIST
1755     $MATH_FUNCS
1756     $SYSTEM_FEATURES
1757     $SYSTEM_FUNCS
1758     $SYSTEM_LIBRARIES
1759     $THREADS_LIST
1760     $TOOLCHAIN_FEATURES
1761     $TYPES_LIST
1762 "
1763
1764 # options emitted with CONFIG_ prefix but not available on the command line
1765 CONFIG_EXTRA="
1766     aandcttables
1767     ac3dsp
1768     adts_header
1769     audio_frame_queue
1770     audiodsp
1771     blockdsp
1772     bswapdsp
1773     cabac
1774     cbs
1775     cbs_h264
1776     cbs_h265
1777     cbs_mpeg2
1778     dirac_parse
1779     dvprofile
1780     faandct
1781     faanidct
1782     fdctdsp
1783     flacdsp
1784     fmtconvert
1785     g722dsp
1786     gmp
1787     golomb
1788     gplv3
1789     h263dsp
1790     h264chroma
1791     h264dsp
1792     h264parse
1793     h264pred
1794     h264qpel
1795     hevcparse
1796     hpeldsp
1797     huffman
1798     huffyuvdsp
1799     huffyuvencdsp
1800     idctdsp
1801     iirfilter
1802     imdct15
1803     intrax8
1804     iso_media
1805     ividsp
1806     jpegtables
1807     lgplv3
1808     libx262
1809     libxcb_shape
1810     lpc
1811     lzf
1812     me_cmp
1813     mpeg_er
1814     mpegaudio
1815     mpegaudiodsp
1816     mpegaudioheader
1817     mpegvideo
1818     mpegvideoenc
1819     mss34dsp
1820     pixblockdsp
1821     qpeldsp
1822     qsv
1823     qsvdec
1824     qsvenc
1825     qsvvpp
1826     rangecoder
1827     riffdec
1828     riffenc
1829     rtpdec
1830     rtpenc_chain
1831     rv34dsp
1832     sinewin
1833     snappy
1834     srtp
1835     startcode
1836     texturedsp
1837     texturedspenc
1838     tpeldsp
1839     vaapi_encode
1840     vc1dsp
1841     videodsp
1842     vp3dsp
1843     vp56dsp
1844     vp8dsp
1845     wma_freqs
1846     wmv2dsp
1847 "
1848
1849 CMDLINE_SELECT="
1850     $ARCH_EXT_LIST
1851     $CONFIG_LIST
1852     $HAVE_LIST_CMDLINE
1853     $THREADS_LIST
1854     asm
1855     cross_compile
1856     debug
1857     extra_warnings
1858     logging
1859     lto
1860     optimizations
1861     rpath
1862 "
1863
1864 PATHS_LIST="
1865     bindir
1866     datadir
1867     docdir
1868     incdir
1869     libdir
1870     mandir
1871     prefix
1872     shlibdir
1873 "
1874
1875 CMDLINE_SET="
1876     $PATHS_LIST
1877     ar
1878     arch
1879     as
1880     cc
1881     objcc
1882     cpu
1883     cross_prefix
1884     custom_allocator
1885     dep_cc
1886     env
1887     extra_version
1888     host_cc
1889     host_cflags
1890     host_extralibs
1891     host_ld
1892     host_ldflags
1893     host_os
1894     ignore_tests
1895     ld
1896     logfile
1897     malloc_prefix
1898     nm
1899     optflags
1900     pkg_config
1901     pkg_config_flags
1902     samples
1903     sysinclude
1904     sysroot
1905     target_exec
1906     target_os
1907     target_path
1908     target_samples
1909     toolchain
1910     x86asmexe
1911 "
1912
1913 CMDLINE_APPEND="
1914     extra_cflags
1915     extra_objcflags
1916     host_cppflags
1917 "
1918
1919 # code dependency declarations
1920
1921 # architecture extensions
1922
1923 armv5te_deps="arm"
1924 armv6_deps="arm"
1925 armv6t2_deps="arm"
1926 armv8_deps="aarch64"
1927 neon_deps_any="aarch64 arm"
1928 intrinsics_neon_deps="neon"
1929 vfp_deps_any="aarch64 arm"
1930 vfpv3_deps="vfp"
1931
1932 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1933
1934 altivec_deps="ppc"
1935 dcbzl_deps="ppc"
1936 ldbrx_deps="ppc"
1937 ppc4xx_deps="ppc"
1938 vsx_deps="altivec"
1939 power8_deps="vsx"
1940
1941 loongson_deps="mips"
1942 mips32r1_deps="mips32"
1943 mips32r2_deps="mips32"
1944 mips32r6_deps="mips32"
1945 mips64r1_deps="mips64"
1946 mips64r2_deps="mips64"
1947 mips64r6_deps="mips64"
1948
1949 vis_deps="sparc"
1950
1951 cpunop_deps="i686"
1952 x86_64_select="i686"
1953 x86_64_suggest="fast_cmov"
1954
1955 amd3dnow_deps="mmx"
1956 amd3dnowext_deps="amd3dnow"
1957 i686_deps="x86"
1958 mmx_deps="x86"
1959 mmxext_deps="mmx"
1960 sse_deps="mmxext"
1961 sse2_deps="sse"
1962 sse3_deps="sse2"
1963 ssse3_deps="sse3"
1964 sse4_deps="ssse3"
1965 sse42_deps="sse4"
1966 avx_deps="sse42"
1967 xop_deps="avx"
1968 fma3_deps="avx"
1969 fma4_deps="avx"
1970 avx2_deps="avx"
1971
1972 mmx_external_deps="x86asm"
1973 mmx_inline_deps="inline_asm x86"
1974 mmx_suggest="mmx_external mmx_inline"
1975
1976 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1977     eval dep=\$${ext}_deps
1978     eval ${ext}_external_deps='"${dep}_external"'
1979     eval ${ext}_inline_deps='"${dep}_inline"'
1980     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1981 done
1982
1983 aligned_stack_if_any="aarch64 ppc x86"
1984 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1985 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1986 fast_unaligned_if_any="aarch64 ppc x86"
1987 simd_align_16_if_any="altivec neon sse"
1988 simd_align_32_if_any="avx"
1989
1990 # system capabilities
1991 symver_if_any="symver_asm_label symver_gnu_asm"
1992 valgrind_backtrace_conflict="optimizations"
1993 valgrind_backtrace_deps="valgrind_valgrind_h"
1994
1995 # threading support
1996 atomics_gcc_if="sync_val_compare_and_swap"
1997 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1998 atomics_win32_if="MemoryBarrier"
1999 atomics_native_if_any="$ATOMICS_LIST"
2000 w32threads_deps="atomics_native"
2001 threads_if_any="$THREADS_LIST"
2002
2003 # subsystems
2004 cbs_h264_select="cbs golomb"
2005 cbs_h265_select="cbs golomb"
2006 cbs_mpeg2_select="cbs"
2007 dct_select="rdft"
2008 dirac_parse_select="golomb"
2009 error_resilience_select="me_cmp"
2010 faandct_deps="faan"
2011 faandct_select="fdctdsp"
2012 faanidct_deps="faan"
2013 faanidct_select="idctdsp"
2014 h264dsp_select="startcode"
2015 hevcparse_select="golomb"
2016 intrax8_select="blockdsp idctdsp"
2017 mdct_select="fft"
2018 rdft_select="fft"
2019 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2020 mpeg_er_select="error_resilience"
2021 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2022 mpegaudiodsp_select="dct"
2023 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2024 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2025 vc1dsp_select="h264chroma qpeldsp startcode"
2026
2027 # decoders / encoders
2028 aac_decoder_select="adts_header imdct15 mdct sinewin"
2029 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2030 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2031 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2032 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2033 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2034 adpcm_g722_decoder_select="g722dsp"
2035 adpcm_g722_encoder_select="g722dsp"
2036 aic_decoder_select="golomb idctdsp"
2037 alac_encoder_select="lpc"
2038 als_decoder_select="bswapdsp"
2039 amrnb_decoder_select="lsp"
2040 amrwb_decoder_select="lsp"
2041 amv_decoder_select="sp5x_decoder"
2042 ape_decoder_select="bswapdsp"
2043 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2044 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2045 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2046 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2047 atrac1_decoder_select="mdct sinewin"
2048 atrac3_decoder_select="mdct"
2049 atrac3p_decoder_select="mdct sinewin"
2050 bink_decoder_select="blockdsp hpeldsp"
2051 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2052 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2053 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2054 clearvideo_decoder_select="idctdsp"
2055 cllc_decoder_select="bswapdsp"
2056 comfortnoise_encoder_select="lpc"
2057 cook_decoder_select="audiodsp mdct sinewin"
2058 cscd_decoder_select="lzo"
2059 cscd_decoder_suggest="zlib"
2060 dca_decoder_select="fmtconvert mdct"
2061 dds_decoder_select="texturedsp"
2062 dnxhd_decoder_select="blockdsp idctdsp"
2063 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2064 dvvideo_decoder_select="dvprofile idctdsp"
2065 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2066 dxa_decoder_deps="zlib"
2067 dxv_decoder_select="lzf texturedsp"
2068 eac3_decoder_select="ac3_decoder"
2069 eac3_encoder_select="ac3_encoder"
2070 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2071 eatgq_decoder_select="aandcttables idctdsp"
2072 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2073 exr_decoder_deps="zlib"
2074 ffv1_decoder_select="rangecoder"
2075 ffv1_encoder_select="rangecoder"
2076 ffvhuff_decoder_select="huffyuv_decoder"
2077 ffvhuff_encoder_select="huffyuv_encoder"
2078 fic_decoder_select="golomb"
2079 flac_decoder_select="flacdsp"
2080 flac_encoder_select="bswapdsp flacdsp lpc"
2081 flashsv_decoder_deps="zlib"
2082 flashsv_encoder_deps="zlib"
2083 flashsv2_decoder_deps="zlib"
2084 flv_decoder_select="h263_decoder"
2085 flv_encoder_select="h263_encoder"
2086 fourxm_decoder_select="blockdsp bswapdsp"
2087 fraps_decoder_select="bswapdsp huffman"
2088 g2m_decoder_deps="zlib"
2089 g2m_decoder_select="blockdsp idctdsp jpegtables"
2090 h261_decoder_select="mpeg_er mpegvideo"
2091 h261_encoder_select="aandcttables mpegvideoenc"
2092 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2093 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2094 h263i_decoder_select="h263_decoder"
2095 h263p_encoder_select="h263_encoder"
2096 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2097 h264_decoder_suggest="error_resilience"
2098 hap_decoder_select="snappy texturedsp"
2099 hap_encoder_deps="libsnappy"
2100 hap_encoder_select="texturedspenc"
2101 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2102 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2103 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2104 iac_decoder_select="imc_decoder"
2105 imc_decoder_select="bswapdsp fft mdct sinewin"
2106 indeo3_decoder_select="hpeldsp"
2107 indeo4_decoder_select="ividsp"
2108 indeo5_decoder_select="ividsp"
2109 interplay_video_decoder_select="hpeldsp"
2110 jpegls_decoder_select="mjpeg_decoder"
2111 jv_decoder_select="blockdsp"
2112 lagarith_decoder_select="huffyuvdsp"
2113 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2114 magicyuv_decoder_select="huffyuvdsp"
2115 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2116 metasound_decoder_select="lsp mdct sinewin"
2117 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2118 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2119 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2120 mjpegb_decoder_select="mjpeg_decoder"
2121 mlp_decoder_select="mlp_parser"
2122 motionpixels_decoder_select="bswapdsp"
2123 mp1_decoder_select="mpegaudio"
2124 mp1float_decoder_select="mpegaudio"
2125 mp2_decoder_select="mpegaudio"
2126 mp2float_decoder_select="mpegaudio"
2127 mp3_decoder_select="mpegaudio"
2128 mp3adu_decoder_select="mpegaudio"
2129 mp3adufloat_decoder_select="mpegaudio"
2130 mp3float_decoder_select="mpegaudio"
2131 mp3on4_decoder_select="mpegaudio"
2132 mp3on4float_decoder_select="mpegaudio"
2133 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2134 mpc8_decoder_select="mpegaudiodsp"
2135 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2136 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2137 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2138 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2139 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2140 mpeg4_encoder_select="h263_encoder"
2141 msa1_decoder_select="mss34dsp"
2142 msmpeg4v1_decoder_select="h263_decoder"
2143 msmpeg4v2_decoder_select="h263_decoder"
2144 msmpeg4v2_encoder_select="h263_encoder"
2145 msmpeg4v3_decoder_select="h263_decoder"
2146 msmpeg4v3_encoder_select="h263_encoder"
2147 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2148 mts2_decoder_select="mss34dsp"
2149 mxpeg_decoder_select="mjpeg_decoder"
2150 nellymoser_decoder_select="mdct sinewin"
2151 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2152 nuv_decoder_select="idctdsp lzo"
2153 on2avc_decoder_select="mdct"
2154 opus_decoder_deps="avresample"
2155 opus_decoder_select="imdct15"
2156 png_decoder_deps="zlib"
2157 png_encoder_deps="zlib"
2158 png_encoder_select="huffyuvencdsp"
2159 prores_decoder_select="idctdsp"
2160 prores_encoder_select="fdctdsp"
2161 qcelp_decoder_select="lsp"
2162 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2163 ra_144_encoder_select="audio_frame_queue lpc"
2164 ralf_decoder_select="golomb"
2165 rscc_decoder_deps="zlib"
2166 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2167 rv10_encoder_select="h263_encoder"
2168 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2169 rv20_encoder_select="h263_encoder"
2170 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2171 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2172 screenpresso_decoder_deps="zlib"
2173 sipr_decoder_select="lsp"
2174 sp5x_decoder_select="mjpeg_decoder"
2175 svq1_decoder_select="hpeldsp"
2176 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2177 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2178 svq3_decoder_suggest="zlib"
2179 tak_decoder_select="audiodsp"
2180 tdsc_decoder_deps="zlib"
2181 tdsc_decoder_select="mjpeg_decoder"
2182 theora_decoder_select="vp3_decoder"
2183 thp_decoder_select="mjpeg_decoder"
2184 tiff_decoder_suggest="zlib"
2185 tiff_encoder_suggest="zlib"
2186 truehd_decoder_select="mlp_decoder"
2187 truemotion2_decoder_select="bswapdsp"
2188 truespeech_decoder_select="bswapdsp"
2189 tscc_decoder_deps="zlib"
2190 txd_decoder_select="texturedsp"
2191 twinvq_decoder_select="mdct lsp sinewin"
2192 utvideo_decoder_select="bswapdsp huffyuvdsp"
2193 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2194 vble_decoder_select="huffyuvdsp"
2195 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2196 vc1image_decoder_select="vc1_decoder"
2197 vorbis_decoder_select="mdct"
2198 vorbis_encoder_select="mdct"
2199 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2200 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2201 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2202 vp6a_decoder_select="vp6_decoder"
2203 vp6f_decoder_select="vp6_decoder"
2204 vp7_decoder_select="h264pred videodsp vp8dsp"
2205 vp8_decoder_select="h264pred videodsp vp8dsp"
2206 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2207 webp_decoder_select="vp8_decoder"
2208 wmapro_decoder_select="mdct sinewin wma_freqs"
2209 wmav1_decoder_select="mdct sinewin wma_freqs"
2210 wmav1_encoder_select="mdct sinewin wma_freqs"
2211 wmav2_decoder_select="mdct sinewin wma_freqs"
2212 wmav2_encoder_select="mdct sinewin wma_freqs"
2213 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2214 wmv1_decoder_select="h263_decoder"
2215 wmv1_encoder_select="h263_encoder"
2216 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2217 wmv2_encoder_select="h263_encoder wmv2dsp"
2218 wmv3_decoder_select="vc1_decoder"
2219 wmv3image_decoder_select="wmv3_decoder"
2220 zerocodec_decoder_deps="zlib"
2221 zlib_decoder_deps="zlib"
2222 zlib_encoder_deps="zlib"
2223 zmbv_decoder_deps="zlib"
2224 zmbv_encoder_deps="zlib"
2225
2226 # hardware accelerators
2227 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2228 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2229 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2230 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2231
2232 h263_vaapi_hwaccel_deps="vaapi"
2233 h263_vaapi_hwaccel_select="h263_decoder"
2234 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2235 h264_cuvid_hwaccel_select="h264_decoder"
2236 h264_d3d11va_hwaccel_deps="d3d11va"
2237 h264_d3d11va_hwaccel_select="h264_decoder"
2238 h264_d3d11va2_hwaccel_deps="d3d11va"
2239 h264_d3d11va2_hwaccel_select="h264_decoder"
2240 h264_dxva2_hwaccel_deps="dxva2"
2241 h264_dxva2_hwaccel_select="h264_decoder"
2242 h264_vaapi_hwaccel_deps="vaapi"
2243 h264_vaapi_hwaccel_select="h264_decoder"
2244 h264_vda_hwaccel_deps="vda"
2245 h264_vda_hwaccel_select="h264_decoder"
2246 h264_vda_old_hwaccel_deps="vda"
2247 h264_vda_old_hwaccel_select="h264_decoder"
2248 h264_vdpau_hwaccel_deps="vdpau"
2249 h264_vdpau_hwaccel_select="h264_decoder"
2250 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2251 hevc_cuvid_hwaccel_select="hevc_decoder"
2252 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2253 hevc_d3d11va_hwaccel_select="hevc_decoder"
2254 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2255 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2256 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2257 hevc_dxva2_hwaccel_select="hevc_decoder"
2258 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2259 hevc_vaapi_hwaccel_select="hevc_decoder"
2260 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2261 hevc_vdpau_hwaccel_select="hevc_decoder"
2262 mpeg1_vdpau_hwaccel_deps="vdpau"
2263 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2264 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2265 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2266 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2267 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2268 mpeg2_dxva2_hwaccel_deps="dxva2"
2269 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2270 mpeg2_vaapi_hwaccel_deps="vaapi"
2271 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_vdpau_hwaccel_deps="vdpau"
2273 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2274 mpeg4_vaapi_hwaccel_deps="vaapi"
2275 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2276 mpeg4_vdpau_hwaccel_deps="vdpau"
2277 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2278 vc1_d3d11va_hwaccel_deps="d3d11va"
2279 vc1_d3d11va_hwaccel_select="vc1_decoder"
2280 vc1_d3d11va2_hwaccel_deps="d3d11va"
2281 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2282 vc1_dxva2_hwaccel_deps="dxva2"
2283 vc1_dxva2_hwaccel_select="vc1_decoder"
2284 vc1_vaapi_hwaccel_deps="vaapi"
2285 vc1_vaapi_hwaccel_select="vc1_decoder"
2286 vc1_vdpau_hwaccel_deps="vdpau"
2287 vc1_vdpau_hwaccel_select="vc1_decoder"
2288 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2289 vp8_vaapi_hwaccel_select="vp8_decoder"
2290 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2291 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2292 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2293 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2294 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2295
2296 # hardware-accelerated codecs
2297 amf_deps_any="libdl LoadLibrary"
2298 nvenc_deps_any="libdl LoadLibrary"
2299 omx_deps="libdl pthreads"
2300 omx_rpi_select="omx"
2301 qsv_deps="libmfx"
2302 qsvdec_select="qsv"
2303 qsvenc_select="qsv"
2304 qsvvpp_select="qsv"
2305 vaapi_encode_deps="vaapi"
2306
2307 hwupload_cuda_filter_deps="cuda"
2308 scale_npp_filter_deps="cuda libnpp"
2309
2310 h264_amf_encoder_deps="amf"
2311 h264_mmal_decoder_deps="mmal"
2312 h264_nvenc_encoder_deps="nvenc"
2313 h264_omx_encoder_deps="omx"
2314 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2315 h264_qsv_encoder_select="qsvenc"
2316 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2317 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2318 hevc_amf_encoder_deps="amf"
2319 hevc_nvenc_encoder_deps="nvenc"
2320 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2321 hevc_qsv_encoder_select="hevcparse qsvenc"
2322 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2323 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2324 mjpeg_qsv_encoder_deps="libmfx"
2325 mjpeg_qsv_encoder_select="qsvenc"
2326 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2327 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2328 mpeg2_mmal_decoder_deps="mmal"
2329 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2330 mpeg2_qsv_encoder_select="qsvenc"
2331 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2332 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2333 mpeg4_omx_encoder_deps="omx"
2334 vc1_mmal_decoder_deps="mmal"
2335 vc1_qsv_decoder_select="qsvdec vc1_parser"
2336 vp8_qsv_decoder_select="qsvdec vp8_parser"
2337 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2338 vp8_vaapi_encoder_select="vaapi_encode"
2339 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2340 vp9_vaapi_encoder_select="vaapi_encode"
2341
2342 nvenc_h264_encoder_select="h264_nvenc_encoder"
2343 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2344
2345 # parsers
2346 aac_parser_select="adts_header"
2347 h264_parser_select="golomb h264dsp h264parse"
2348 hevc_parser_select="hevcparse"
2349 mpegaudio_parser_select="mpegaudioheader"
2350 mpegvideo_parser_select="mpegvideo"
2351 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2352 vc1_parser_select="vc1dsp"
2353
2354 # bitstream_filters
2355 aac_adtstoasc_bsf_select="adts_header"
2356 h264_metadata_bsf_select="cbs_h264"
2357 h264_redundant_pps_bsf_select="cbs_h264"
2358 hevc_metadata_bsf_select="cbs_h265"
2359 mjpeg2jpeg_bsf_select="jpegtables"
2360 mpeg2_metadata_bsf_select="cbs_mpeg2"
2361 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2362
2363 # external libraries
2364 avisynth_deps="LoadLibrary"
2365 avxsynth_deps="libdl"
2366 avisynth_demuxer_deps_any="avisynth avxsynth"
2367 avisynth_demuxer_select="riffdec"
2368 libaom_av1_decoder_deps="libaom"
2369 libaom_av1_encoder_deps="libaom"
2370 libdcadec_decoder_deps="libdcadec"
2371 libfaac_encoder_deps="libfaac"
2372 libfaac_encoder_select="audio_frame_queue"
2373 libfdk_aac_decoder_deps="libfdk_aac"
2374 libfdk_aac_encoder_deps="libfdk_aac"
2375 libfdk_aac_encoder_select="audio_frame_queue"
2376 libgsm_decoder_deps="libgsm"
2377 libgsm_encoder_deps="libgsm"
2378 libgsm_ms_decoder_deps="libgsm"
2379 libgsm_ms_encoder_deps="libgsm"
2380 libilbc_decoder_deps="libilbc"
2381 libilbc_encoder_deps="libilbc"
2382 libkvazaar_encoder_deps="libkvazaar"
2383 libmp3lame_encoder_deps="libmp3lame"
2384 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2385 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2386 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2387 libopencore_amrnb_encoder_select="audio_frame_queue"
2388 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2389 libopenh264_decoder_deps="libopenh264"
2390 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2391 libopenh264_encoder_deps="libopenh264"
2392 libopenjpeg_decoder_deps="libopenjpeg"
2393 libopenjpeg_encoder_deps="libopenjpeg"
2394 libopus_decoder_deps="libopus"
2395 libopus_encoder_deps="libopus"
2396 libopus_encoder_select="audio_frame_queue"
2397 libschroedinger_decoder_deps="libschroedinger"
2398 libschroedinger_encoder_deps="libschroedinger"
2399 libspeex_decoder_deps="libspeex"
2400 libspeex_encoder_deps="libspeex"
2401 libspeex_encoder_select="audio_frame_queue"
2402 libtheora_encoder_deps="libtheora"
2403 libtwolame_encoder_deps="libtwolame"
2404 libvo_aacenc_encoder_deps="libvo_aacenc"
2405 libvo_aacenc_encoder_select="audio_frame_queue"
2406 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2407 libvorbis_encoder_deps="libvorbis"
2408 libvorbis_encoder_select="audio_frame_queue"
2409 libvpx_vp8_decoder_deps="libvpx"
2410 libvpx_vp8_encoder_deps="libvpx"
2411 libvpx_vp9_decoder_deps="libvpx"
2412 libvpx_vp9_encoder_deps="libvpx"
2413 libwavpack_encoder_deps="libwavpack"
2414 libwavpack_encoder_select="audio_frame_queue"
2415 libwebp_encoder_deps="libwebp"
2416 libx262_encoder_deps="libx262"
2417 libx264_encoder_deps="libx264"
2418 libx265_encoder_deps="libx265"
2419 libxavs_encoder_deps="libxavs"
2420 libxvid_encoder_deps="libxvid mkstemp"
2421
2422 # demuxers / muxers
2423 ac3_demuxer_select="ac3_parser"
2424 asf_demuxer_select="riffdec"
2425 asf_muxer_select="riffenc"
2426 asf_stream_muxer_select="asf_muxer"
2427 avi_demuxer_select="iso_media riffdec"
2428 avi_muxer_select="riffenc"
2429 caf_demuxer_select="iso_media riffdec"
2430 dash_muxer_select="mp4_muxer"
2431 dirac_demuxer_select="dirac_parser"
2432 dv_demuxer_select="dvprofile"
2433 dv_muxer_select="dvprofile"
2434 dxa_demuxer_select="riffdec"
2435 eac3_demuxer_select="ac3_parser"
2436 f4v_muxer_select="mov_muxer"
2437 flac_demuxer_select="flac_parser"
2438 hds_muxer_select="flv_muxer"
2439 hls_muxer_select="mpegts_muxer"
2440 ipod_muxer_select="mov_muxer"
2441 ismv_muxer_select="mov_muxer"
2442 matroska_audio_muxer_select="matroska_muxer"
2443 matroska_demuxer_select="iso_media riffdec"
2444 matroska_demuxer_suggest="bzlib lzo zlib"
2445 matroska_muxer_select="iso_media riffenc"
2446 mmf_muxer_select="riffenc"
2447 mov_demuxer_select="iso_media riffdec"
2448 mov_demuxer_suggest="zlib"
2449 mov_muxer_select="iso_media riffenc rtpenc_chain"
2450 mp3_demuxer_select="mpegaudio_parser"
2451 mp3_muxer_select="mpegaudioheader"
2452 mp4_muxer_select="mov_muxer"
2453 mpegts_demuxer_select="iso_media"
2454 mpegts_muxer_select="adts_muxer latm_muxer"
2455 mpegtsraw_demuxer_select="mpegts_demuxer"
2456 mxf_d10_muxer_select="mxf_muxer"
2457 nut_muxer_select="riffenc"
2458 nuv_demuxer_select="riffdec"
2459 oga_muxer_select="ogg_muxer"
2460 ogg_demuxer_select="dirac_parse"
2461 opus_muxer_select="ogg_muxer"
2462 psp_muxer_select="mov_muxer"
2463 rtp_demuxer_select="sdp_demuxer"
2464 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2465 rtsp_demuxer_select="http_protocol rtpdec"
2466 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2467 sap_demuxer_select="sdp_demuxer"
2468 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2469 sdp_demuxer_select="rtpdec"
2470 smoothstreaming_muxer_select="ismv_muxer"
2471 spdif_demuxer_select="adts_header"
2472 spdif_muxer_select="adts_header"
2473 spx_muxer_select="ogg_muxer"
2474 swf_demuxer_suggest="zlib"
2475 tak_demuxer_select="tak_parser"
2476 tg2_muxer_select="mov_muxer"
2477 tgp_muxer_select="mov_muxer"
2478 w64_demuxer_select="wav_demuxer"
2479 wav_demuxer_select="riffdec"
2480 wav_muxer_select="riffenc"
2481 webm_muxer_select="iso_media riffenc"
2482 wtv_demuxer_select="mpegts_demuxer riffdec"
2483 xmv_demuxer_select="riffdec"
2484 xwma_demuxer_select="riffdec"
2485
2486 # indevs
2487 alsa_indev_deps="alsa"
2488 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2489 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2490 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2491 fbdev_indev_deps="linux_fb_h"
2492 jack_indev_deps="libjack"
2493 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2494 libcdio_indev_deps="libcdio"
2495 libdc1394_indev_deps="libdc1394"
2496 oss_indev_deps_any="sys_soundcard_h"
2497 pulse_indev_deps="libpulse"
2498 sndio_indev_deps="sndio"
2499 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2500 vfwcap_indev_deps="vfw32 vfwcap_defines"
2501 xcbgrab_indev_deps="libxcb libxcb_shape"
2502 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2503
2504 # protocols
2505 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2506 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2507 ffrtmpcrypt_protocol_select="tcp_protocol"
2508 ffrtmphttp_protocol_conflict="librtmp_protocol"
2509 ffrtmphttp_protocol_select="http_protocol"
2510 gopher_protocol_select="network"
2511 http_protocol_select="tcp_protocol"
2512 http_protocol_suggest="zlib"
2513 httpproxy_protocol_select="tcp_protocol"
2514 httpproxy_protocol_suggest="zlib"
2515 https_protocol_select="tls_protocol"
2516 https_protocol_suggest="zlib"
2517 icecast_protocol_select="http_protocol"
2518 librtmp_protocol_deps="librtmp"
2519 librtmpe_protocol_deps="librtmp"
2520 librtmps_protocol_deps="librtmp"
2521 librtmpt_protocol_deps="librtmp"
2522 librtmpte_protocol_deps="librtmp"
2523 mmsh_protocol_select="http_protocol"
2524 mmst_protocol_select="network"
2525 rtmp_protocol_conflict="librtmp_protocol"
2526 rtmp_protocol_select="tcp_protocol"
2527 rtmp_protocol_suggest="zlib"
2528 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2529 rtmpe_protocol_suggest="zlib"
2530 rtmps_protocol_conflict="librtmp_protocol"
2531 rtmps_protocol_select="tls_protocol"
2532 rtmps_protocol_suggest="zlib"
2533 rtmpt_protocol_select="ffrtmphttp_protocol"
2534 rtmpt_protocol_suggest="zlib"
2535 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2536 rtmpte_protocol_suggest="zlib"
2537 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2538 rtmpts_protocol_suggest="zlib"
2539 rtp_protocol_select="udp_protocol"
2540 sctp_protocol_deps="struct_sctp_event_subscribe"
2541 sctp_protocol_select="network"
2542 srtp_protocol_select="rtp_protocol srtp"
2543 tcp_protocol_select="network"
2544 tls_protocol_deps_any="gnutls openssl"
2545 tls_protocol_select="tcp_protocol"
2546 udp_protocol_select="network"
2547 unix_protocol_deps="sys_un_h"
2548 unix_protocol_select="network"
2549
2550 # filters
2551 asyncts_filter_deps="avresample"
2552 blackframe_filter_deps="gpl"
2553 boxblur_filter_deps="gpl"
2554 bs2b_filter_deps="libbs2b"
2555 cropdetect_filter_deps="gpl"
2556 deinterlace_qsv_filter_deps="libmfx"
2557 deinterlace_vaapi_filter_deps="vaapi"
2558 delogo_filter_deps="gpl"
2559 drawtext_filter_deps="libfreetype"
2560 drawtext_filter_suggest="libfontconfig"
2561 frei0r_filter_deps="frei0r libdl"
2562 frei0r_src_filter_deps="frei0r libdl"
2563 hdcd_filter_deps="libhdcd"
2564 hqdn3d_filter_deps="gpl"
2565 interlace_filter_deps="gpl"
2566 movie_filter_deps="avcodec avformat"
2567 ocv_filter_deps="libopencv"
2568 overlay_qsv_filter_deps="libmfx"
2569 overlay_qsv_filter_select="qsvvpp"
2570 resample_filter_deps="avresample"
2571 scale_filter_deps="swscale"
2572 scale_qsv_filter_deps="libmfx"
2573 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2574 vpp_qsv_filter_deps="libmfx"
2575 vpp_qsv_filter_select="qsvvpp"
2576
2577 # examples
2578 decode_audio_example_deps="avcodec avutil"
2579 decode_video_example_deps="avcodec avutil"
2580 encode_audio_example_deps="avcodec avutil"
2581 encode_video_example_deps="avcodec avutil"
2582 filter_audio_example_deps="avfilter avutil"
2583 metadata_example_deps="avformat avutil"
2584 output_example_deps="avcodec avformat avresample avutil swscale"
2585 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2586 transcode_aac_example_deps="avcodec avformat avresample"
2587
2588 # EXTRALIBS_LIST
2589 cpu_init_extralibs="pthreads_extralibs"
2590 cws2fws_extralibs="zlib_extralibs"
2591
2592 # libraries, in linking order
2593 avcodec_deps="avutil"
2594 avcodec_select="null_bsf"
2595 avdevice_deps="avformat avcodec avutil"
2596 avfilter_deps="avutil"
2597 avformat_deps="avcodec avutil"
2598 avformat_suggest="network"
2599 avresample_deps="avutil"
2600 swscale_deps="avutil"
2601
2602 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2603 avdevice_extralibs="libm_extralibs"
2604 avformat_extralibs="libm_extralibs"
2605 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2606 avresample_extralibs="libm_extralibs"
2607 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"
2608 swscale_extralibs="libm_extralibs"
2609
2610 # programs
2611 avconv_deps="avcodec avfilter avformat avresample swscale"
2612 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2613                fps_filter null_filter resample_filter scale_filter
2614                trim_filter"
2615 avconv_suggest="psapi shell32"
2616 avplay_deps="avcodec avfilter avformat avresample sdl"
2617 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2618 avplay_suggest="shell32"
2619 avprobe_deps="avcodec avformat"
2620 avprobe_suggest="shell32"
2621
2622 # documentation
2623 pod2man_deps="doc"
2624 texi2html_deps="doc"
2625
2626 # default parameters
2627
2628 logfile="avbuild/config.log"
2629
2630 # installation paths
2631 prefix_default="/usr/local"
2632 bindir_default='${prefix}/bin'
2633 datadir_default='${prefix}/share/avconv'
2634 docdir_default='${prefix}/share/doc/libav'
2635 incdir_default='${prefix}/include'
2636 libdir_default='${prefix}/lib'
2637 mandir_default='${prefix}/share/man'
2638 shlibdir_default="$libdir_default"
2639
2640 # toolchain
2641 ar_default="ar"
2642 cc_default="gcc"
2643 host_cc_default="gcc"
2644 x86asmexe_default="nasm"
2645 ln_s="ln -s -f"
2646 nm_default="nm -g"
2647 pkg_config_default=pkg-config
2648 ranlib="ranlib"
2649 strip="strip"
2650 version_script='--version-script'
2651 objformat="elf32"
2652
2653 # machine
2654 arch_default=$(uname -m)
2655 cpu="generic"
2656 intrinsics="none"
2657
2658 # OS
2659 target_os_default=$(tolower $(uname -s))
2660 host_os=$target_os_default
2661
2662 # configurable options
2663 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2664
2665 enable asm
2666 enable debug
2667 enable doc
2668 enable faan faandct faanidct
2669 enable optimizations
2670 enable safe_bitstream_reader
2671 enable static
2672 enable swscale_alpha
2673 enable valgrind_backtrace
2674
2675 # By default, enable only those hwaccels that have no external dependencies.
2676 enable d3d11va dxva2 vda vdpau
2677
2678 # internal components are enabled by default
2679 enable $EXTRALIBS_LIST
2680
2681 # Avoid external, non-system, libraries getting enabled by dependency resolution
2682 disable $EXTERNAL_LIBRARY_LIST
2683
2684 # build settings
2685 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2686 LIBPREF="lib"
2687 LIBSUF=".a"
2688 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2689 SLIBPREF="lib"
2690 SLIBSUF=".so"
2691 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2692 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2693 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2694 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2695 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2696 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2697 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2698
2699 asflags_filter=echo
2700 cflags_filter=echo
2701 ldflags_filter=echo
2702
2703 AS_C='-c'
2704 AS_O='-o $@'
2705 CC_C='-c'
2706 CC_E='-E -o $@'
2707 CC_O='-o $@'
2708 OBJCC_C='-c'
2709 OBJCC_E='-E -o $@'
2710 OBJCC_O='-o $@'
2711 X86ASM_O='-o $@'
2712 LD_O='-o $@'
2713 LD_LIB='-l%'
2714 LD_PATH='-L'
2715 HOSTCC_C='-c'
2716 HOSTCC_E='-E -o $@'
2717 HOSTCC_O='-o $@'
2718 HOSTLD_O='-o $@'
2719
2720 host_extralibs='-lm'
2721 host_cflags_filter=echo
2722 host_ldflags_filter=echo
2723
2724 target_path='$(CURDIR)'
2725
2726 # since the object filename is not given with the -MM flag, the compiler
2727 # is only able to print the basename, and we must add the path ourselves
2728 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2729 DEPFLAGS='-MM'
2730
2731 mkdir -p avbuild
2732
2733 # find source path
2734 if test -f configure; then
2735     source_path=.
2736 else
2737     source_path=$(cd $(dirname "$0"); pwd)
2738     echo "$source_path" | grep -q '[[:blank:]]' &&
2739         die "Out of tree builds are impossible with whitespace in source path."
2740     test -e "$source_path/config.h" &&
2741         die "Out of tree builds are impossible with config.h in source dir."
2742 fi
2743
2744 for v in "$@"; do
2745     r=${v#*=}
2746     l=${v%"$r"}
2747     r=$(sh_quote "$r")
2748     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2749 done
2750
2751 find_things(){
2752     thing=$1
2753     pattern=$2
2754     file=$source_path/$3
2755     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2756 }
2757
2758 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2759 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2760 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2761 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2762 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2763 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2764 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2765
2766 find_things_extern(){
2767     thing=$1
2768     pattern=$2
2769     file=$source_path/$3
2770     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2771 }
2772
2773 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2774 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2775 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2776
2777 AVCODEC_COMPONENTS_LIST="
2778     $BSF_LIST
2779     $DECODER_LIST
2780     $ENCODER_LIST
2781     $HWACCEL_LIST
2782     $PARSER_LIST
2783 "
2784
2785 AVDEVICE_COMPONENTS_LIST="
2786     $INDEV_LIST
2787 "
2788
2789 AVFILTER_COMPONENTS_LIST="
2790     $FILTER_LIST
2791 "
2792
2793 AVFORMAT_COMPONENTS_LIST="
2794     $DEMUXER_LIST
2795     $MUXER_LIST
2796     $PROTOCOL_LIST
2797 "
2798
2799 ALL_COMPONENTS="
2800     $AVCODEC_COMPONENTS_LIST
2801     $AVDEVICE_COMPONENTS_LIST
2802     $AVFILTER_COMPONENTS_LIST
2803     $AVFORMAT_COMPONENTS_LIST
2804 "
2805
2806 for n in $COMPONENT_LIST; do
2807     v=$(toupper ${n%s})_LIST
2808     eval enable \$$v
2809     eval ${n}_if_any="\$$v"
2810 done
2811
2812 enable $ARCH_EXT_LIST
2813
2814 die_unknown(){
2815     echo "Unknown option \"$1\"."
2816     echo "See $0 --help for available options."
2817     exit 1
2818 }
2819
2820 print_3_columns() {
2821     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2822 }
2823
2824 show_list() {
2825     suffix=_$1
2826     shift
2827     echo $* | sed s/$suffix//g | print_3_columns
2828     exit 0
2829 }
2830
2831 for opt do
2832     optval="${opt#*=}"
2833     case "$opt" in
2834         --extra-ldflags=*)
2835             add_ldflags $optval
2836         ;;
2837         --extra-ldexeflags=*)
2838             add_ldexeflags $optval
2839         ;;
2840         --extra-ldsoflags=*)
2841             add_ldsoflags $optval
2842         ;;
2843         --extra-libs=*)
2844             add_extralibs $optval
2845         ;;
2846         --disable-devices)
2847             disable $INDEV_LIST
2848         ;;
2849         --enable-debug=*)
2850             debuglevel="$optval"
2851         ;;
2852         --disable-programs)
2853             disable $PROGRAM_LIST
2854         ;;
2855         --disable-everything)
2856             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2857         ;;
2858         --disable-all)
2859             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2860             disable $LIBRARY_LIST $PROGRAM_LIST doc
2861         ;;
2862         --enable-*=*|--disable-*=*)
2863             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2864             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2865             eval list=\$$(toupper $thing)_LIST
2866             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2867             $action $(filter "$name" $list)
2868         ;;
2869         --enable-yasm|--disable-yasm)
2870             warn "The ${opt} option is only provided for compatibility and will be\n"\
2871                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2872             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2873         ;;
2874         --enable-?*|--disable-?*)
2875             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2876             if is_in $option $COMPONENT_LIST; then
2877                 test $action = disable && action=unset
2878                 eval $action \$$(toupper ${option%s})_LIST
2879             elif is_in $option $CMDLINE_SELECT; then
2880                 $action $option
2881             else
2882                 die_unknown $opt
2883             fi
2884         ;;
2885         --list-*)
2886             NAME="${opt#--list-}"
2887             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2888             NAME=${NAME%s}
2889             eval show_list $NAME \$$(toupper $NAME)_LIST
2890         ;;
2891         --help|-h) show_help
2892         ;;
2893         --quiet|-q) quiet=yes
2894         ;;
2895         *)
2896             optname="${opt%%=*}"
2897             optname="${optname#--}"
2898             optname=$(echo "$optname" | sed 's/-/_/g')
2899             if is_in $optname $CMDLINE_SET; then
2900                 eval $optname='$optval'
2901             elif is_in $optname $CMDLINE_APPEND; then
2902                 append $optname "$optval"
2903             else
2904                 die_unknown $opt
2905             fi
2906         ;;
2907     esac
2908 done
2909
2910 for e in $env; do
2911     eval "export $e"
2912 done
2913
2914 disabled logging && logfile=/dev/null
2915
2916 # command line configuration sanity checks
2917
2918 # we need to build at least one lib type
2919 if ! enabled_any static shared; then
2920     cat <<EOF
2921 At least one library type must be built.
2922 Specify --enable-static to build the static libraries or --enable-shared to
2923 build the shared libraries as well. To only build the shared libraries specify
2924 --disable-static in addition to --enable-shared.
2925 EOF
2926     exit 1
2927 fi
2928
2929 # Die early if licensing-related configure options are incompatible.
2930 die_license_disabled() {
2931     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2932 }
2933
2934 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2935 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2936 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2937
2938 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2939
2940 if enabled nonfree; then
2941     license="nonfree and unredistributable"
2942 elif enabled gplv3; then
2943     license="GPL version 3 or later"
2944 elif enabled lgplv3; then
2945     license="LGPL version 3 or later"
2946 elif enabled gpl; then
2947     license="GPL version 2 or later"
2948 else
2949     license="LGPL version 2.1 or later"
2950 fi
2951
2952 enabled_all gnutls openssl &&
2953     die "GnuTLS and OpenSSL must not be enabled at the same time."
2954
2955 # Disable all the library-specific components if the library itself
2956 # is disabled, see AVCODEC_LIST and following _LIST variables.
2957
2958 disable_components(){
2959     disabled ${1} && disable $(
2960         eval components="\$$(toupper ${1})_COMPONENTS"
2961         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2962     )
2963 }
2964
2965 map 'disable_components $v' $LIBRARY_LIST
2966
2967 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2968 set >> $logfile
2969
2970 case "$toolchain" in
2971     *-asan)
2972         cc_default="${toolchain%-asan}"
2973         add_cflags  -fsanitize=address
2974         add_ldflags -fsanitize=address
2975     ;;
2976     *-msan)
2977         cc_default="${toolchain%-msan}"
2978         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2979         add_ldflags -fsanitize=memory
2980     ;;
2981     *-tsan)
2982         cc_default="${toolchain%-tsan}"
2983         add_cflags  -fsanitize=thread -fPIE
2984         add_ldflags -fsanitize=thread -pie
2985         case "$toolchain" in
2986             gcc-tsan)
2987                 add_cflags  -fPIC
2988                 add_ldflags -fPIC
2989                 ;;
2990         esac
2991     ;;
2992     *-usan)
2993         cc_default="${toolchain%-usan}"
2994         add_cflags  -fsanitize=undefined
2995         add_ldflags -fsanitize=undefined
2996         case "$toolchain" in
2997             clang-usan)
2998                 add_cflags -O1
2999                 ;;
3000         esac
3001     ;;
3002     valgrind-*)
3003         target_exec_default="valgrind"
3004         case "$toolchain" in
3005             valgrind-massif)
3006                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3007                 ;;
3008             valgrind-memcheck)
3009                 target_exec_args="--track-origins=yes --leak-check=full"
3010                 ;;
3011         esac
3012     ;;
3013     msvc)
3014         # Check whether the current MSVC version needs the C99 converter.
3015         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3016         # support enough of C99 to build libav. Default to the new
3017         # behaviour if the regexp was unable to match anything, since this
3018         # successfully parses the version number of existing supported
3019         # versions that require the converter (MSVC 2010 and 2012).
3020         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3021         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3022             cc_default="cl"
3023         else
3024             cc_default="c99wrap cl"
3025         fi
3026         ld_default="$source_path/compat/windows/mslink"
3027         nm_default="dumpbin -symbols"
3028         ar_default="lib"
3029         case "$arch" in
3030         aarch64|arm64)
3031             as_default="armasm64"
3032             ;;
3033         arm*)
3034             as_default="armasm"
3035             ;;
3036         esac
3037         target_os_default="win32"
3038         # Use a relative path for TMPDIR. This makes sure all the
3039         # ffconf temp files are written with a relative path, avoiding
3040         # issues with msys/win32 path conversion for MSVC parameters
3041         # such as -Fo<file> or -out:<file>.
3042         TMPDIR=.
3043     ;;
3044     icl)
3045         cc_default="icl"
3046         ld_default="xilink"
3047         nm_default="dumpbin -symbols"
3048         ar_default="xilib"
3049         target_os_default="win32"
3050         TMPDIR=.
3051     ;;
3052     gcov)
3053         add_cflags  -fprofile-arcs -ftest-coverage
3054         add_ldflags -fprofile-arcs -ftest-coverage
3055     ;;
3056     llvm-cov)
3057         add_cflags -fprofile-arcs -ftest-coverage
3058         add_ldflags --coverage
3059     ;;
3060     hardened)
3061         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3062         add_cflags   -fno-strict-overflow -fstack-protector-all
3063         add_ldflags  -Wl,-z,relro -Wl,-z,now
3064     ;;
3065     ?*)
3066         die "Unknown toolchain $toolchain"
3067     ;;
3068 esac
3069
3070 if test -n "$cross_prefix"; then
3071     test -n "$arch" && test -n "$target_os" ||
3072         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3073     enable cross_compile
3074 fi
3075
3076 ar_default="${cross_prefix}${ar_default}"
3077 cc_default="${cross_prefix}${cc_default}"
3078 objcc_default="${cross_prefix}${objcc_default}"
3079 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3080 nm_default="${cross_prefix}${nm_default}"
3081 pkg_config_default="${cross_prefix}${pkg_config_default}"
3082 ranlib="${cross_prefix}${ranlib}"
3083 strip="${cross_prefix}${strip}"
3084
3085 sysinclude_default="${sysroot}/usr/include"
3086
3087 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3088 enabled cross_compile || host_cc_default=$cc
3089 set_default host_cc
3090
3091 if ! $pkg_config --version >/dev/null 2>&1; then
3092     warn "$pkg_config not found, library detection may fail."
3093     pkg_config=false
3094 fi
3095
3096 exesuf() {
3097     case $1 in
3098         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3099     esac
3100 }
3101
3102 EXESUF=$(exesuf $target_os)
3103 HOSTEXESUF=$(exesuf $host_os)
3104
3105 # set temporary file name
3106 : ${TMPDIR:=$TEMPDIR}
3107 : ${TMPDIR:=$TMP}
3108 : ${TMPDIR:=/tmp}
3109
3110 if ! test_cmd mktemp -u XXXXXX; then
3111     # simple replacement for missing mktemp
3112     # NOT SAFE FOR GENERAL USE
3113     mktemp(){
3114         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3115         echo "$tmpname"
3116         mkdir "$tmpname"
3117     }
3118 fi
3119
3120 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3121     die "Unable to create temporary directory in $TMPDIR."
3122
3123 tmpfile(){
3124     tmp="${AVTMPDIR}/test"$2
3125     (set -C; exec > $tmp) 2> /dev/null ||
3126         die "Unable to create temporary file in $AVTMPDIR."
3127     eval $1=$tmp
3128 }
3129
3130 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3131 trap 'exit 2' INT
3132
3133 tmpfile TMPASM .asm
3134 tmpfile TMPC   .c
3135 tmpfile TMPE   $EXESUF
3136 tmpfile TMPH   .h
3137 tmpfile TMPO   .o
3138 tmpfile TMPS   .S
3139 tmpfile TMPSH  .sh
3140 tmpfile TMPV   .ver
3141
3142 unset -f mktemp
3143
3144 chmod +x $TMPE
3145
3146 # make sure we can execute files in $TMPDIR
3147 cat > $TMPSH 2>> $logfile <<EOF
3148 #! /bin/sh
3149 EOF
3150 chmod +x $TMPSH >> $logfile 2>&1
3151 if ! $TMPSH >> $logfile 2>&1; then
3152     cat <<EOF
3153 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3154 variable to another directory and make sure that it is not mounted noexec.
3155 EOF
3156     die "Sanity test failed."
3157 fi
3158
3159 armasm_flags(){
3160     for flag; do
3161         case $flag in
3162             # Filter out MSVC cl.exe options from cflags that shouldn't
3163             # be passed to gas-preprocessor
3164             -M[TD]*)                                            ;;
3165             *)                  echo $flag                      ;;
3166         esac
3167    done
3168 }
3169
3170 cparser_flags(){
3171     for flag; do
3172         case $flag in
3173             -Wno-switch)             echo -Wno-switch-enum ;;
3174             -Wno-format-zero-length) ;;
3175             -Wdisabled-optimization) ;;
3176             -Wno-pointer-sign)       echo -Wno-other ;;
3177             *)                       echo $flag ;;
3178         esac
3179     done
3180 }
3181
3182 msvc_common_flags(){
3183     for flag; do
3184         case $flag in
3185             # In addition to specifying certain flags under the compiler
3186             # specific filters, they must be specified here as well or else the
3187             # generic catch all at the bottom will print the original flag.
3188             -Wall)                ;;
3189             -Wextra)              ;;
3190             -std=c99)             ;;
3191             # Common flags
3192             -fomit-frame-pointer) ;;
3193             -g)                   echo -Z7 ;;
3194             -fno-math-errno)      ;;
3195             -fno-common)          ;;
3196             -fno-signed-zeros)    ;;
3197             -fPIC)                ;;
3198             -mthumb)              ;;
3199             -march=*)             ;;
3200             -lz)                  echo zlib.lib ;;
3201             -lx264)               echo libx264.lib ;;
3202             -l*)                  echo ${flag#-l}.lib ;;
3203             -L*)                  echo -libpath:${flag#-L} ;;
3204             *)                    echo $flag ;;
3205         esac
3206     done
3207 }
3208
3209 msvc_flags(){
3210     msvc_common_flags "$@"
3211     for flag; do
3212         case $flag in
3213             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3214                                        -wd4554 ;;
3215             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3216                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3217                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3218                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3219         esac
3220     done
3221 }
3222
3223 icl_flags(){
3224     msvc_common_flags "$@"
3225     for flag; do
3226         case $flag in
3227             # Despite what Intel's documentation says -Wall, which is supported
3228             # on Windows, does enable remarks so disable them here.
3229             -Wall)                echo $flag -Qdiag-disable:remark ;;
3230             -std=c99)             echo -Qstd=c99 ;;
3231         esac
3232     done
3233 }
3234
3235 suncc_flags(){
3236     for flag; do
3237         case $flag in
3238             -march=*|-mcpu=*)
3239                 case "${flag#*=}" in
3240                     native)                   echo -xtarget=native       ;;
3241                     v9|niagara)               echo -xarch=sparc          ;;
3242                     ultrasparc)               echo -xarch=sparcvis       ;;
3243                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3244                     i586|pentium)             echo -xchip=pentium        ;;
3245                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3246                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3247                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3248                     pentium4*)          echo -xtarget=pentium4           ;;
3249                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3250                     *-sse3)             echo -xarch=sse3                 ;;
3251                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3252                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3253                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3254                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3255                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3256                     k8|opteron|athlon64|athlon-fx)
3257                                                echo -xarch=sse2a         ;;
3258                     athlon*)                   echo -xarch=pentium_proa  ;;
3259                 esac
3260                 ;;
3261             -std=c99)             echo -xc99              ;;
3262             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3263             -fPIC)                echo -KPIC -xcode=pic32 ;;
3264             -W*,*)                echo $flag              ;;
3265             -f*-*|-W*|-mimpure-text)                      ;;
3266             -shared)              echo -G                 ;;
3267             *)                    echo $flag              ;;
3268         esac
3269     done
3270 }
3271
3272 probe_cc(){
3273     pfx=$1
3274     _cc=$2
3275
3276     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3277     unset _ld_o _ldflags _ld_lib _ld_path
3278     unset _depflags _DEPCMD _DEPFLAGS
3279     _flags_filter=echo
3280
3281     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3282         _type=llvm_gcc
3283         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3284         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3285         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3289         _type=gcc
3290         gcc_version=$($_cc --version | head -n1)
3291         gcc_basever=$($_cc -dumpversion)
3292         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3293         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3294         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3295         if ! $_cc -dumpversion | grep -q '^2\.'; then
3296             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3297         fi
3298         _cflags_speed='-O3'
3299         _cflags_size='-Os'
3300     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3301         _type=icc
3302         _ident=$($_cc --version | head -n1)
3303         _depflags='-MMD'
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306         _cflags_noopt='-O1'
3307     elif $_cc -v 2>&1 | grep -q xlc; then
3308         _type=xlc
3309         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3310         _cflags_speed='-O5'
3311         _cflags_size='-O5 -qcompact'
3312     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3313         test -d "$sysroot" || die "No valid sysroot specified."
3314         _type=armcc
3315         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3316         armcc_conf="$PWD/armcc.conf"
3317         $_cc --arm_linux_configure                 \
3318              --arm_linux_config_file="$armcc_conf" \
3319              --configure_sysroot="$sysroot"        \
3320              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3321              die "Error creating armcc configuration file."
3322         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3323         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3324         as_default="${cross_prefix}gcc"
3325         _depflags='-MMD'
3326         _cflags_speed='-O3'
3327         _cflags_size='-Os'
3328     elif $_cc -v 2>&1 | grep -q clang; then
3329         _type=clang
3330         _ident=$($_cc --version 2>/dev/null | head -n1)
3331         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3332         _cflags_speed='-O3'
3333         _cflags_size='-Os'
3334     elif $_cc -V 2>&1 | grep -q Sun; then
3335         _type=suncc
3336         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3337         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3338         _DEPFLAGS='-xM1 -xc99'
3339         _ldflags='-std=c99'
3340         _cflags_speed='-O5'
3341         _cflags_size='-O5 -xspace'
3342         _flags_filter=suncc_flags
3343     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3344         _type=pathscale
3345         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3346         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3347         _cflags_speed='-O2'
3348         _cflags_size='-Os'
3349         _flags_filter='filter_out -Wdisabled-optimization'
3350     elif $_cc -v 2>&1 | grep -q Open64; then
3351         _type=open64
3352         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3354         _cflags_speed='-O2'
3355         _cflags_size='-Os'
3356         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3357     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3358         _type=armasm
3359         _ident=$($_cc | head -n1)
3360         # 4509: "This form of conditional instruction is deprecated"
3361         _flags="-nologo -ignore 4509"
3362         _flags_filter=armasm_flags
3363     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3364         _type=msvc
3365         _ident=$($_cc 2>&1 | head -n1)
3366         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3367         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3368         _cflags_speed="-O2"
3369         _cflags_size="-O1"
3370         _cflags_noopt="-O1"
3371         if $_cc -nologo- 2>&1 | grep -q Linker; then
3372             _ld_o='-out:$@'
3373         else
3374             _ld_o='-Fe$@'
3375         fi
3376         _cc_o='-Fo$@'
3377         _cc_e='-P -Fi$@'
3378         _flags_filter=msvc_flags
3379         _ld_lib='lib%.a'
3380         _ld_path='-libpath:'
3381         _flags='-nologo'
3382     elif $_cc 2>&1 | grep -q Intel; then
3383         _type=icl
3384         _ident=$($_cc 2>&1 | head -n1)
3385         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3386         # Not only is O3 broken on 13.x+ but it is slower on all previous
3387         # versions (tested) as well.
3388         _cflags_speed="-O2"
3389         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3390         if $_cc 2>&1 | grep -q Linker; then
3391             _ld_o='-out:$@'
3392         else
3393             _ld_o='-Fe$@'
3394         fi
3395         _cc_o='-Fo$@'
3396         _cc_e='-P'
3397         _flags_filter=icl_flags
3398         _ld_lib='lib%.a'
3399         _ld_path='-libpath:'
3400         # -Qdiag-error to make icl error when seeing certain unknown arguments
3401         _flags='-nologo -Qdiag-error:4044,10157'
3402         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3403         # with MSVC which enables it by default.
3404         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3405     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3406         # lld can emulate multiple different linkers; in ms link.exe mode,
3407         # the -? parameter gives the help output which contains an identifyable
3408         # string, while it gives an error in other modes.
3409         _type=lld-link
3410         # The link.exe mode doesn't have a switch for getting the version,
3411         # but we can force it back to gnu mode and get the version from there.
3412         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3413         _ld_o='-out:$@'
3414         _flags_filter=msvc_flags
3415         _ld_lib='lib%.a'
3416         _ld_path='-libpath:'
3417     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3418         _type=cparser
3419         _ident=$($_cc --version | head -n1)
3420         _depflags='-MMD'
3421         _cflags_speed='-O4'
3422         _cflags_size='-O2'
3423         _flags_filter=cparser_flags
3424     fi
3425
3426     eval ${pfx}_type=\$_type
3427     eval ${pfx}_ident=\$_ident
3428 }
3429
3430 set_ccvars(){
3431     eval ${1}_C=\${_cc_c-\${${1}_C}}
3432     eval ${1}_E=\${_cc_e-\${${1}_E}}
3433     eval ${1}_O=\${_cc_o-\${${1}_O}}
3434
3435     if [ -n "$_depflags" ]; then
3436         eval ${1}_DEPFLAGS=\$_depflags
3437     else
3438         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3439         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3440         eval DEP${1}FLAGS=\$_flags
3441     fi
3442 }
3443
3444 probe_cc cc "$cc"
3445 cflags_filter=$_flags_filter
3446 cflags_speed=$_cflags_speed
3447 cflags_size=$_cflags_size
3448 cflags_noopt=$_cflags_noopt
3449 add_cflags $_flags $_cflags
3450 cc_ldflags=$_ldflags
3451 set_ccvars CC
3452
3453 probe_cc hostcc "$host_cc"
3454 host_cflags_filter=$_flags_filter
3455 host_cflags_speed=$_cflags_speed
3456 add_host_cflags  $_flags $_cflags
3457 set_ccvars HOSTCC
3458
3459 test -n "$cc_type" && enable $cc_type ||
3460     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3461
3462 : ${as_default:=$cc}
3463 : ${objcc_default:=$cc}
3464 : ${dep_cc_default:=$cc}
3465 : ${ld_default:=$cc}
3466 : ${host_ld_default:=$host_cc}
3467 set_default ar as objcc dep_cc ld host_ld
3468
3469 probe_cc as "$as"
3470 asflags_filter=$_flags_filter
3471 add_asflags $_flags $_cflags
3472 set_ccvars AS
3473
3474 probe_cc objcc "$objcc"
3475 objcflags_filter=$_flags_filter
3476 add_objcflags $_flags $_cflags
3477 set_ccvars OBJC
3478
3479 probe_cc ld "$ld"
3480 ldflags_filter=$_flags_filter
3481 add_ldflags $_flags $_ldflags
3482 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3483 LD_O=${_ld_o-$LD_O}
3484 LD_LIB=${_ld_lib-$LD_LIB}
3485 LD_PATH=${_ld_path-$LD_PATH}
3486
3487 probe_cc hostld "$host_ld"
3488 host_ldflags_filter=$_flags_filter
3489 add_host_ldflags $_flags $_ldflags
3490 HOSTLD_O=${_ld_o-$HOSTLD_O}
3491
3492 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3493     probe_cc depcc "$dep_cc"
3494     CCDEP=${_DEPCMD:-$DEPCMD}
3495     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3496     DEPCCFLAGS=$_flags
3497 fi
3498
3499 if $ar 2>&1 | grep -q Microsoft; then
3500     arflags="-nologo"
3501     ar_o='-out:$@'
3502 else
3503     arflags="rc"
3504     ar_o='$@'
3505 fi
3506
3507 add_cflags $extra_cflags
3508 add_objcflags $extra_objcflags
3509 add_asflags $extra_cflags
3510
3511 if test -n "$sysroot"; then
3512     case "$cc_type" in
3513         gcc|llvm_gcc|clang)
3514             add_cppflags --sysroot="$sysroot"
3515             add_ldflags --sysroot="$sysroot"
3516         ;;
3517     esac
3518 fi
3519
3520 if test "$cpu" = host; then
3521     enabled cross_compile &&
3522         die "--cpu=host makes no sense when cross-compiling."
3523
3524     case "$cc_type" in
3525         gcc|llvm_gcc)
3526             check_native(){
3527                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3528                 sed -n "/cc1.*$1=/{
3529                             s/.*$1=\\([^ ]*\\).*/\\1/
3530                             p
3531                             q
3532                         }" $TMPE
3533             }
3534             cpu=$(check_native -march || check_native -mcpu)
3535         ;;
3536     esac
3537
3538     test "${cpu:-host}" = host &&
3539         die "--cpu=host not supported with compiler $cc"
3540 fi
3541
3542 # Deal with common $arch aliases
3543 case "$arch" in
3544     aarch64|arm64)
3545         arch="aarch64"
3546     ;;
3547     arm*)
3548         arch="arm"
3549     ;;
3550     mips*|IP*)
3551         case "$arch" in
3552         *el)
3553             add_cppflags -EL
3554             add_ldflags -EL
3555         ;;
3556         *eb)
3557             add_cppflags -EB
3558             add_ldflags -EB
3559         ;;
3560         esac
3561         arch="mips"
3562     ;;
3563     parisc*|hppa*)
3564         arch="parisc"
3565     ;;
3566     "Power Macintosh"|ppc*|powerpc*)
3567         arch="ppc"
3568     ;;
3569     s390|s390x)
3570         arch="s390"
3571     ;;
3572     sh4|sh)
3573         arch="sh4"
3574     ;;
3575     sun4u|sparc*)
3576         arch="sparc"
3577     ;;
3578     tilegx|tile-gx)
3579         arch="tilegx"
3580     ;;
3581     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3582         arch="x86"
3583     ;;
3584 esac
3585
3586 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3587 enable $arch
3588
3589 # Add processor-specific flags
3590 if enabled aarch64; then
3591
3592     case $cpu in
3593         armv*)
3594             cpuflags="-march=$cpu"
3595         ;;
3596         *)
3597             cpuflags="-mcpu=$cpu"
3598         ;;
3599     esac
3600
3601 elif enabled alpha; then
3602
3603     cpuflags="-mcpu=$cpu"
3604
3605 elif enabled arm; then
3606
3607     check_arm_arch() {
3608         test_cpp_condition stddef.h \
3609             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3610             $cpuflags
3611     }
3612
3613     probe_arm_arch() {
3614         if   check_arm_arch 4;        then echo armv4
3615         elif check_arm_arch 4T;       then echo armv4t
3616         elif check_arm_arch 5;        then echo armv5
3617         elif check_arm_arch 5E;       then echo armv5e
3618         elif check_arm_arch 5T;       then echo armv5t
3619         elif check_arm_arch 5TE;      then echo armv5te
3620         elif check_arm_arch 5TEJ;     then echo armv5te
3621         elif check_arm_arch 6;        then echo armv6
3622         elif check_arm_arch 6J;       then echo armv6j
3623         elif check_arm_arch 6K;       then echo armv6k
3624         elif check_arm_arch 6Z;       then echo armv6z
3625         elif check_arm_arch 6ZK;      then echo armv6zk
3626         elif check_arm_arch 6T2;      then echo armv6t2
3627         elif check_arm_arch 7;        then echo armv7
3628         elif check_arm_arch 7A  7_A;  then echo armv7-a
3629         elif check_arm_arch 7S;       then echo armv7-a
3630         elif check_arm_arch 7R  7_R;  then echo armv7-r
3631         elif check_arm_arch 7M  7_M;  then echo armv7-m
3632         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3633         elif check_arm_arch 8A  8_A;  then echo armv8-a
3634         fi
3635     }
3636
3637     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3638
3639     case $cpu in
3640         armv*)
3641             cpuflags="-march=$cpu"
3642             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3643         ;;
3644         *)
3645             cpuflags="-mcpu=$cpu"
3646             case $cpu in
3647                 cortex-a*)                               subarch=armv7a  ;;
3648                 cortex-r*)                               subarch=armv7r  ;;
3649                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3650                 arm11*)                                  subarch=armv6   ;;
3651                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3652                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3653                 *)                             subarch=$(probe_arm_arch) ;;
3654             esac
3655         ;;
3656     esac
3657
3658     case "$subarch" in
3659         armv5t*)    enable fast_clz                ;;
3660         armv[6-8]*) enable fast_clz fast_unaligned ;;
3661     esac
3662
3663 elif enabled avr32; then
3664
3665     case $cpu in
3666         ap7[02]0[0-2])
3667             subarch="avr32_ap"
3668             cpuflags="-mpart=$cpu"
3669         ;;
3670         ap)
3671             subarch="avr32_ap"
3672             cpuflags="-march=$cpu"
3673         ;;
3674         uc3[ab]*)
3675             subarch="avr32_uc"
3676             cpuflags="-mcpu=$cpu"
3677         ;;
3678         uc)
3679             subarch="avr32_uc"
3680             cpuflags="-march=$cpu"
3681         ;;
3682     esac
3683
3684 elif enabled bfin; then
3685
3686     cpuflags="-mcpu=$cpu"
3687
3688 elif enabled mips; then
3689
3690     cpuflags="-march=$cpu"
3691
3692 elif enabled ppc; then
3693
3694     disable ldbrx
3695
3696     case $(tolower $cpu) in
3697         601|ppc601|powerpc601)
3698             cpuflags="-mcpu=601"
3699             disable altivec
3700         ;;
3701         603*|ppc603*|powerpc603*)
3702             cpuflags="-mcpu=603"
3703             disable altivec
3704         ;;
3705         604*|ppc604*|powerpc604*)
3706             cpuflags="-mcpu=604"
3707             disable altivec
3708         ;;
3709         g3|75*|ppc75*|powerpc75*)
3710             cpuflags="-mcpu=750"
3711             disable altivec
3712         ;;
3713         g4|745*|ppc745*|powerpc745*)
3714             cpuflags="-mcpu=7450"
3715             disable vsx
3716         ;;
3717         74*|ppc74*|powerpc74*)
3718             cpuflags="-mcpu=7400"
3719             disable vsx
3720         ;;
3721         g5|970|ppc970|powerpc970)
3722             cpuflags="-mcpu=970"
3723             disable vsx
3724         ;;
3725         power[3-6]*)
3726             cpuflags="-mcpu=$cpu"
3727             disable vsx
3728         ;;
3729         power[7-8]*)
3730             cpuflags="-mcpu=$cpu"
3731             enable ldbrx
3732         ;;
3733         cell)
3734             cpuflags="-mcpu=cell"
3735             enable ldbrx
3736             disable vsx
3737         ;;
3738         e500mc)
3739             cpuflags="-mcpu=e500mc"
3740             disable altivec
3741         ;;
3742         e500v2)
3743             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3744             disable altivec
3745             disable dcbzl
3746         ;;
3747         e500)
3748             cpuflags="-mcpu=8540 -mhard-float"
3749             disable altivec
3750             disable dcbzl
3751         ;;
3752     esac
3753
3754 elif enabled sparc; then
3755
3756     case $cpu in
3757         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3758             cpuflags="-mcpu=$cpu"
3759         ;;
3760         ultrasparc*|niagara[234])
3761             cpuflags="-mcpu=$cpu"
3762         ;;
3763     esac
3764
3765 elif enabled x86; then
3766
3767     case $cpu in
3768         i[345]86|pentium)
3769             cpuflags="-march=$cpu"
3770             disable i686
3771             disable mmx
3772         ;;
3773         # targets that do NOT support nopl and conditional mov (cmov)
3774         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3775             cpuflags="-march=$cpu"
3776             disable i686
3777         ;;
3778         # targets that do support nopl and conditional mov (cmov)
3779         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3780             cpuflags="-march=$cpu"
3781             enable i686
3782             enable fast_cmov
3783         ;;
3784         # targets that do support conditional mov but on which it's slow
3785         pentium4|pentium4m|prescott|nocona)
3786             cpuflags="-march=$cpu"
3787             enable i686
3788             disable fast_cmov
3789         ;;
3790     esac
3791
3792 fi
3793
3794 if [ "$cpu" != generic ]; then
3795     add_cflags  $cpuflags
3796     add_asflags $cpuflags
3797     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3798 fi
3799
3800 # compiler sanity check
3801 test_exec <<EOF
3802 int main(void){ return 0; }
3803 EOF
3804 if test "$?" != 0; then
3805     echo "$cc is unable to create an executable file."
3806     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3807         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3808         echo "Only do this if you know what cross compiling means."
3809     fi
3810     die "C compiler test failed."
3811 fi
3812
3813 add_cppflags -D_ISOC99_SOURCE
3814
3815 # some compilers silently accept -std=c11, so we also need to check that the
3816 # version macro is defined properly
3817 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3818     add_cflags -std=c11 ||
3819     check_cflags -std=c99
3820
3821 check_cppflags -D_FILE_OFFSET_BITS=64
3822 check_cppflags -D_LARGEFILE_SOURCE
3823
3824 add_host_cppflags -D_ISOC99_SOURCE
3825 check_host_cflags -std=c99
3826 check_host_cflags -Wall
3827 check_host_cflags $host_cflags_speed
3828
3829 check_64bit(){
3830     arch32=$1
3831     arch64=$2
3832     expr=${3:-'sizeof(void *) > 4'}
3833     test_code cc "" "int test[2*($expr) - 1]" &&
3834         subarch=$arch64 || subarch=$arch32
3835     enable $subarch
3836 }
3837
3838 case "$arch" in
3839     aarch64|alpha|ia64)
3840         enabled shared && enable_weak pic
3841     ;;
3842     mips)
3843         check_64bit mips mips64 '_MIPS_SIM > 1'
3844         enabled shared && enable_weak pic
3845     ;;
3846     parisc)
3847         check_64bit parisc parisc64
3848         enabled shared && enable_weak pic
3849     ;;
3850     ppc)
3851         check_64bit ppc ppc64
3852         enabled shared && enable_weak pic
3853     ;;
3854     s390)
3855         check_64bit s390 s390x
3856         enabled shared && enable_weak pic
3857     ;;
3858     sparc)
3859         check_64bit sparc sparc64
3860         enabled shared && enable_weak pic
3861     ;;
3862     x86)
3863         check_64bit x86_32 x86_64
3864         if enabled x86_64; then
3865             enabled shared && enable_weak pic
3866             objformat=elf64
3867         fi
3868     ;;
3869 esac
3870
3871 # OS specific
3872 case $target_os in
3873     aix)
3874         SHFLAGS=-shared
3875         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3876         enabled shared && add_ldflags -Wl,-brtl
3877         arflags='-Xany -r -c'
3878         ;;
3879     android)
3880         disable symver
3881         enable section_data_rel_ro
3882         SLIB_INSTALL_NAME='$(SLIBNAME)'
3883         SLIB_INSTALL_LINKS=
3884         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3885         ;;
3886     haiku)
3887         prefix_default="/boot/common"
3888         network_extralibs="-lnetwork"
3889         host_extralibs=
3890         ;;
3891     sunos)
3892         SHFLAGS='-shared -Wl,-h,$$(@F)'
3893         enabled x86 && append SHFLAGS -mimpure-text
3894         network_extralibs="-lsocket -lnsl"
3895         # When using suncc to build, the Solaris linker will mark
3896         # an executable with each instruction set encountered by
3897         # the Solaris assembler.  As our libraries contain their own
3898         # guards for processor-specific code, instead suppress
3899         # generation of the HWCAPS ELF section on Solaris x86 only.
3900         enabled_all suncc x86 &&
3901             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3902             add_ldflags -Wl,-M,mapfile
3903         nm_default='nm -P -g'
3904         version_script='-M'
3905         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3906         ;;
3907     netbsd)
3908         disable symver
3909         oss_indev_extralibs="-lossaudio"
3910         ;;
3911     openbsd|bitrig)
3912         disable symver
3913         SHFLAGS='-shared'
3914         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3915         SLIB_INSTALL_LINKS=
3916         oss_indev_extralibs="-lossaudio"
3917         ;;
3918     dragonfly)
3919         disable symver
3920         ;;
3921     freebsd)
3922         ;;
3923     bsd/os)
3924         add_extralibs -lpoll -lgnugetopt
3925         ;;
3926     darwin)
3927         enabled ppc && add_asflags -force_cpusubtype_ALL
3928         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3929         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3930         add_ldflags -Wl,-dynamic,-search_paths_first
3931         check_cflags -Werror=partial-availability
3932         SLIBSUF=".dylib"
3933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3935         enabled x86_64 && objformat="macho64" || objformat="macho32"
3936         enabled_any pic shared ||
3937             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3938         check_header dispatch/dispatch.h &&
3939             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3940         if test -n "$sysroot"; then
3941             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3942             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3943         fi
3944         ;;
3945     msys*)
3946         die "Native MSYS builds are discouraged, please use the MINGW environment."
3947         ;;
3948     mingw32*|mingw64*)
3949         target_os=mingw32
3950         LIBTARGET=i386
3951         if enabled x86_64; then
3952             LIBTARGET="i386:x86-64"
3953         elif enabled arm; then
3954             LIBTARGET="arm"
3955         elif enabled aarch64; then
3956             LIBTARGET="arm64"
3957         fi
3958         if enabled shared; then
3959             # Cannot build both shared and static libs when using dllimport.
3960             disable static
3961         fi
3962         check_ldflags -Wl,--nxcompat
3963         check_ldflags -Wl,--dynamicbase
3964         shlibdir_default="$bindir_default"
3965         SLIBPREF=""
3966         SLIBSUF=".dll"
3967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3969         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3970         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3971         SLIB_INSTALL_LINKS=
3972         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3973         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3974         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3975         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3976         enabled x86_64 && objformat="win64" || objformat="win32"
3977         dlltool="${cross_prefix}dlltool"
3978         ranlib=:
3979         enable dos_paths
3980         ;;
3981     win32|win64)
3982         disable symver
3983         if enabled shared; then
3984             # Link to the import library instead of the normal static library
3985             # for shared libs.
3986             LD_LIB='%.lib'
3987             # Cannot build both shared and static libs with MSVC or icl.
3988             disable static
3989         fi
3990         shlibdir_default="$bindir_default"
3991         SLIBPREF=""
3992         SLIBSUF=".dll"
3993         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3994         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3995         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3996         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3997         SLIB_INSTALL_LINKS=
3998         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3999         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4000         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4001         enabled x86_64 && objformat="win64" || objformat="win32"
4002         ranlib=:
4003         enable dos_paths
4004         ;;
4005     cygwin*)
4006         target_os=cygwin
4007         shlibdir_default="$bindir_default"
4008         SLIBPREF="cyg"
4009         SLIBSUF=".dll"
4010         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4011         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4012         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4013         SLIB_INSTALL_LINKS=
4014         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4015         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4016         enabled x86_64 && objformat="win64" || objformat="win32"
4017         enable dos_paths
4018         ;;
4019     *-dos|freedos|opendos)
4020         network_extralibs="-lsocket"
4021         objformat="coff"
4022         enable dos_paths
4023         add_cppflags -U__STRICT_ANSI__
4024         ;;
4025     linux)
4026         enable section_data_rel_ro
4027         ;;
4028     irix*)
4029         target_os=irix
4030         ranlib="echo ignoring ranlib"
4031         ;;
4032     os/2*)
4033         ln_s="cp -f"
4034         objformat="aout"
4035         add_cppflags -D_GNU_SOURCE
4036         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4037         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4038         LIBSUF="_s.a"
4039         SLIBPREF=""
4040         SLIBSUF=".dll"
4041         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4042         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4043         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4044             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4045             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4046             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4047             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4048         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4049             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4050         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4051         enable dos_paths
4052         ;;
4053     gnu/kfreebsd)
4054         add_cppflags -D_BSD_SOURCE
4055         ;;
4056     gnu)
4057         ;;
4058     qnx)
4059         add_cppflags -D_QNX_SOURCE
4060         network_extralibs="-lsocket"
4061         ;;
4062     symbian)
4063         SLIBSUF=".dll"
4064         enable dos_paths
4065         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4066         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4067         add_ldflags -Wl,--target1-abs,--no-undefined \
4068                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4069                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4070         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4071                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4072                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4073         ;;
4074     minix)
4075         ;;
4076     none)
4077         ;;
4078     *)
4079         die "Unknown OS '$target_os'."
4080         ;;
4081 esac
4082
4083 # determine libc flavour
4084
4085 probe_libc(){
4086     pfx=$1
4087     pfx_no_=${pfx%_}
4088     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4089     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4090         eval ${pfx}libc_type=uclibc
4091         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4092     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4093         eval ${pfx}libc_type=glibc
4094         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4095     # MinGW headers can be installed on Cygwin, so check for newlib first.
4096     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4097         eval ${pfx}libc_type=newlib
4098         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4099     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4100     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4101         eval ${pfx}libc_type=mingw64
4102         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4103         eval test \$${pfx_no_}cc_type = "gcc" &&
4104             add_${pfx}cppflags -D__printf__=__gnu_printf__
4105     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4106          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4107         eval ${pfx}libc_type=mingw32
4108         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4109             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4110             die "ERROR: MinGW32 runtime version must be >= 3.15."
4111         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4112         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4113             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4114         test_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4115             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4116         eval test \$${pfx_no_}cc_type = "gcc" &&
4117             add_${pfx}cppflags -D__printf__=__gnu_printf__
4118     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4119         eval ${pfx}libc_type=msvcrt
4120         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4121             if [ "$pfx" = host_ ]; then
4122                 add_host_cppflags -Dsnprintf=_snprintf
4123             else
4124                 add_compat strtod.o strtod=avpriv_strtod
4125                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4126                                              _snprintf=avpriv_snprintf  \
4127                                              vsnprintf=avpriv_vsnprintf
4128             fi
4129         fi
4130         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4131         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4132         # 0x601 by default unless something else is set by the user.
4133         # This can easily lead to us detecting functions only present
4134         # in such new versions and producing binaries requiring windows 7.0.
4135         # Therefore explicitly set the default to XP unless the user has
4136         # set something else on the command line.
4137         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4138         # family. For these cases, configure is free to use any functions
4139         # found in the SDK headers by default. (Alternatively, we could force
4140         # _WIN32_WINNT to 0x0602 in that case.)
4141         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4142             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4143 #ifdef WINAPI_FAMILY
4144 #include <winapifamily.h>
4145 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4146 #error not desktop
4147 #endif
4148 #endif
4149 EOF
4150         if [ "$pfx" = "" ]; then
4151             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4152         fi
4153     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4154         eval ${pfx}libc_type=klibc
4155     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4156         eval ${pfx}libc_type=bionic
4157     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4158         eval ${pfx}libc_type=solaris
4159         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4160     else
4161         eval ${pfx}libc_type=default
4162         add_${pfx}cppflags -D_DEFAULT_SOURCE
4163     fi
4164     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4165 }
4166
4167 probe_libc
4168 probe_libc host_
4169
4170 # hacks for compiler/libc/os combinations
4171
4172 case $libc_type in
4173     bionic)
4174         add_compat strtod.o strtod=avpriv_strtod
4175         ;;
4176 esac
4177
4178 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4179     add_cppflags '-I\$(SRC_PATH)/compat/float'
4180
4181 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4182
4183 set_default $PATHS_LIST
4184 set_default nm
4185
4186 disabled optimizations || check_cflags -fomit-frame-pointer
4187
4188 enable_weak_pic() {
4189     disabled pic && return
4190     enable pic
4191     add_cppflags -DPIC
4192     case "$target_os" in
4193     mingw*|cygwin*|win*)
4194         ;;
4195     *)
4196         add_cflags -fPIC
4197         add_asflags -fPIC
4198         ;;
4199     esac
4200 }
4201
4202 enabled pic && enable_weak_pic
4203
4204 test_cc <<EOF || die "Symbol mangling check failed."
4205 int ff_extern;
4206 EOF
4207 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4208 extern_prefix=${sym%%ff_extern*}
4209
4210 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4211
4212 for restrict_keyword in restrict __restrict__ __restrict ""; do
4213     test_code cc "" "char * $restrict_keyword p" && break
4214 done
4215
4216 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
4217
4218 # The global variable ensures the bits appear unchanged in the object file.
4219 test_cc <<EOF || die "endian test failed"
4220 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4221 EOF
4222 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4223
4224 check_gas() {
4225     log "check_gas using '$as' as AS"
4226     # :vararg is used on aarch64, arm and ppc altivec
4227     test_as <<EOF || return 1
4228 .macro m n, y:vararg=0
4229 \n: .int \y
4230 .endm
4231 m x
4232 EOF
4233     # .altmacro is only used in arm asm
4234     ! enabled arm || check_as gnu_as ".altmacro"
4235 }
4236
4237 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4238     nogas=:
4239     enabled_any arm aarch64 && nogas=die
4240     enabled_all ppc altivec && nogas=warn
4241     as_noop=-v
4242
4243     case $as_type in
4244         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4245         gcc)  gaspp_as_type=gas ;;
4246         *)    gaspp_as_type=$as_type ;;
4247     esac
4248
4249     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4250
4251     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4252         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4253
4254     if ! check_gas ; then
4255         as=${gas:=$as}
4256         check_gas || \
4257             $nogas "GNU assembler not found, install/update gas-preprocessor"
4258     fi
4259
4260     check_as as_func ".func test
4261                       .endfunc"
4262 fi
4263
4264 check_inline_asm inline_asm_labels '"1:\n"'
4265
4266 if enabled aarch64; then
4267     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4268     # internal assembler in clang 3.3 does not support this instruction
4269     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4270     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4271
4272     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4273
4274 elif enabled alpha; then
4275
4276     check_cflags -mieee
4277
4278 elif enabled arm; then
4279
4280     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
4281     test_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4282     enabled thumb && check_cflags -mthumb || check_cflags -marm
4283
4284     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
4285         :
4286     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4287         :
4288     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4289         case "${cross_prefix:-$cc}" in
4290             *hardfloat*) enable vfp_args; fpabi=vfp ;;
4291             *) check_ld vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
4292 __asm__ (".eabi_attribute 28, 1");
4293 int main(void) { return 0; }
4294 EOF
4295         esac
4296         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4297     fi
4298
4299     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4300     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4301     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4302     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4303     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4304     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4305
4306     [ $target_os = linux ] || [ $target_os = android ] ||
4307         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4308             $ARCH_EXT_LIST_ARM
4309
4310     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4311
4312     check_as as_arch_directive ".arch armv7-a"
4313     check_as as_fpu_directive  ".fpu neon"
4314
4315     # llvm's integrated assembler supports .object_arch from llvm 3.5
4316     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4317         check_as as_object_arch ".object_arch armv4"
4318
4319     # MS armasm fails to assemble our PIC constructs
4320     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4321
4322 elif enabled mips; then
4323
4324     # make sure that only one instruction set is enabled
4325     disable $ARCH_EXT_LIST_MIPS
4326
4327     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4328
4329     if enabled mips64; then
4330         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4331             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4332                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4333     else
4334         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4335             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4336                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4337     fi
4338
4339 elif enabled parisc; then
4340
4341     if enabled gcc; then
4342         case $($cc -dumpversion) in
4343             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4344         esac
4345     fi
4346
4347 elif enabled ppc; then
4348
4349     enable local_aligned_8 local_aligned_16 local_aligned_32
4350
4351     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4352     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4353     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4354     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4355
4356     if enabled altivec; then
4357         check_cflags -maltivec -mabi=altivec
4358
4359         # check if our compiler supports Motorola AltiVec C API
4360         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
4361                                     vector signed int v2 = (vector signed int) { 1 };
4362                                     v1 = vec_add(v1, v2);"
4363
4364         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4365     fi
4366
4367     if enabled vsx; then
4368         check_cflags -mvsx &&
4369         check_cc vsx altivec.h "int v[4] = { 0 };
4370                                 vector signed int v1 = vec_vsx_ld(0, v);"
4371     fi
4372
4373     if enabled power8; then
4374         check_cpp_condition power8 altivec.h "defined(_ARCH_PWR8)"
4375     fi
4376
4377 elif enabled x86; then
4378
4379     check_builtin rdtsc    intrin.h   "__rdtsc()"
4380     check_builtin mm_empty mmintrin.h "_mm_empty()"
4381
4382     enable local_aligned_8 local_aligned_16 local_aligned_32
4383
4384     # check whether EBP is available on x86
4385     # As 'i' is stored on the stack, this program will crash
4386     # if the base pointer is used to access it because the
4387     # base pointer is cleared in the inline assembly code.
4388     check_exec_crash <<EOF && enable ebp_available
4389 volatile int i=0;
4390 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4391 return i;
4392 EOF
4393
4394     # check whether EBX is available on x86
4395     check_inline_asm ebx_available '""::"b"(0)' &&
4396         check_inline_asm ebx_available '"":::"%ebx"'
4397
4398     # check whether xmm clobbers are supported
4399     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4400
4401     # check whether binutils is new enough to compile SSSE3/MMXEXT
4402     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4403     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4404
4405     probe_x86asm(){
4406         x86asmexe_probe=$1
4407         if test_cmd $x86asmexe_probe -v; then
4408             x86asmexe=$x86asmexe_probe
4409             x86asm_type=nasm
4410             x86asm_debug="-g -F dwarf"
4411             X86ASMDEP=
4412             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4413         elif test_cmd $x86asmexe_probe --version; then
4414             x86asmexe=$x86asmexe_probe
4415             x86asm_type=yasm
4416             x86asm_debug="-g dwarf2"
4417             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4418             X86ASM_DEPFLAGS=
4419         fi
4420         test_x86asm "movbe ecx, [5]" && enable x86asm
4421     }
4422
4423     if ! disabled_any asm mmx x86asm; then
4424         disable x86asm
4425         for program in $x86asmexe nasm yasm; do
4426             probe_x86asm $program && break
4427         done
4428         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4429         X86ASMFLAGS="-f $objformat"
4430         enabled pic               && append X86ASMFLAGS "-DPIC"
4431         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4432         case "$objformat" in
4433             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4434         esac
4435
4436         test_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4437         test_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4438         test_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4439         test_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4440         test_x86asm "CPU amdnop"                      || disable cpunop
4441     fi
4442
4443     case "$cpu" in
4444         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4445             disable fast_clz
4446         ;;
4447     esac
4448
4449 fi
4450
4451 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
4452
4453 check_ldflags -Wl,--as-needed
4454
4455 if ! disabled network; then
4456     check_func getaddrinfo $network_extralibs
4457     check_func inet_aton $network_extralibs
4458
4459     check_type netdb.h "struct addrinfo"
4460     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4461     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4462     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4463     check_type poll.h "struct pollfd"
4464     check_type netinet/sctp.h "struct sctp_event_subscribe"
4465     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4466     check_type netinet/in.h "struct sockaddr_in6"
4467     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4468     check_type "sys/types.h sys/socket.h" socklen_t
4469
4470     # Prefer arpa/inet.h over winsock2
4471     if check_header arpa/inet.h ; then
4472         check_func closesocket
4473     elif check_header winsock2.h ; then
4474         check_func_headers winsock2.h closesocket -lws2 &&
4475             network_extralibs="-lws2" ||
4476         { check_func_headers winsock2.h closesocket -lws2_32 &&
4477             network_extralibs="-lws2_32"; } || disable winsock2_h network
4478         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4479
4480         check_type ws2tcpip.h socklen_t
4481         check_type ws2tcpip.h "struct addrinfo"
4482         check_type ws2tcpip.h "struct group_source_req"
4483         check_type ws2tcpip.h "struct ip_mreq_source"
4484         check_type ws2tcpip.h "struct ipv6_mreq"
4485         check_type winsock2.h "struct pollfd"
4486         check_struct winsock2.h "struct sockaddr" sa_len
4487         check_type ws2tcpip.h "struct sockaddr_in6"
4488         check_type ws2tcpip.h "struct sockaddr_storage"
4489     else
4490         disable network
4491     fi
4492 fi
4493
4494 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4495 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4496 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4497 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4498
4499 case "$custom_allocator" in
4500     jemalloc)
4501         # jemalloc by default does not use a prefix
4502         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4503     ;;
4504     tcmalloc)
4505         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4506         malloc_prefix=tc_
4507     ;;
4508 esac
4509
4510 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4511 check_func  ${malloc_prefix}memalign            && enable memalign
4512 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4513
4514 test_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4515     { check_lib clock_gettime time.h clock_gettime ||
4516       check_lib clock_gettime time.h clock_gettime -lrt; }
4517
4518 check_func  fcntl
4519 check_func  gethrtime
4520 check_func  getopt
4521 check_func  getrusage
4522 check_func  gettimeofday
4523 check_func  gmtime_r
4524 check_func  isatty
4525 check_func  localtime_r
4526 check_func  mkstemp
4527 check_func  mmap
4528 check_func  mprotect
4529 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4530 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4531 check_func  sched_getaffinity
4532 check_func  setrlimit
4533 check_func  strerror_r
4534 check_func  sysconf
4535 check_func  sysctl
4536 check_func  usleep
4537
4538 check_func_headers io.h setmode
4539 check_func_headers mach/mach_time.h mach_absolute_time
4540 check_func_headers stdlib.h getenv
4541
4542 check_func_headers windows.h GetProcessAffinityMask
4543 check_func_headers windows.h GetProcessTimes
4544 check_func_headers windows.h GetSystemTimeAsFileTime
4545 check_func_headers windows.h LoadLibrary
4546 check_func_headers windows.h MapViewOfFile
4547 check_func_headers windows.h SetConsoleTextAttribute
4548 check_func_headers windows.h Sleep
4549 check_func_headers windows.h VirtualAlloc
4550 check_struct windows.h "CONDITION_VARIABLE" Ptr
4551
4552 check_header direct.h
4553 check_header dxgidebug.h
4554 check_header dxva.h
4555 check_header dxva2api.h
4556 check_header io.h
4557 check_header malloc.h
4558 check_header poll.h
4559 check_header sys/param.h
4560 check_header sys/resource.h
4561 check_header sys/select.h
4562 check_header sys/time.h
4563 check_header sys/un.h
4564 check_header unistd.h
4565 check_header valgrind/valgrind.h
4566 check_header VideoDecodeAcceleration/VDADecoder.h
4567 check_header windows.h
4568
4569 # it seems there are versions of clang in some distros that try to use the
4570 # gcc headers, which explodes for stdatomic
4571 # so we also check that atomics actually work here
4572 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4573
4574 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4575 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4576 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4577 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4578
4579 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4580
4581 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4582 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4583 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4584
4585 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4586 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4587 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4588
4589 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4590 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4591 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4592 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4593 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4594 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4595 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4596 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4597 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4598
4599 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4600
4601 if ! disabled w32threads && ! enabled pthreads; then
4602     check_lib w32threads "windows.h process.h" _beginthreadex
4603 fi
4604
4605 # check for some common methods of building with pthread support
4606 # do this before the optional library checks as some of them require pthreads
4607 if ! disabled pthreads && ! enabled w32threads; then
4608     if check_lib pthreads pthread.h pthread_join -pthread; then
4609         add_cflags -pthread
4610     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4611         add_cflags -pthreads
4612     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4613         :
4614     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4615         :
4616     elif check_func pthread_join; then
4617         enable pthreads
4618     fi
4619     enabled pthreads &&
4620         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4621 fi
4622
4623 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4624 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4625
4626 # On some systems dynamic loading requires no extra linker flags
4627 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4628
4629 check_lib libm math.h sin -lm
4630
4631 atan2f_args=2
4632 ldexpf_args=2
4633 powf_args=2
4634
4635 for func in $MATH_FUNCS; do
4636     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4637 done
4638
4639 # these are off by default, so fail if requested and not available
4640 enabled amf               && require_cpp_condition AMF/core/Version.h "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
4641 enabled avisynth          && require_header avisynth/avisynth_c.h
4642 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4643 enabled cuda              && require cuda cuda.h cuInit -lcuda
4644 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4645 enabled frei0r            && require_header frei0r.h
4646 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4647                              check_lib gmp gmp.h mpz_export -lgmp
4648 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
4649 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4650 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4651 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4652 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4653 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4654 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4655 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4656 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4657 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4658 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4659 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4660 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4661 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4662 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4663 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4664 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4665 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4666 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4667 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4668                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4669 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4670 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4671 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4672 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4673 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4674 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4675 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4676 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4677 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4678 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4679 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4680 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4681                              { enabled libvpx_vp8_decoder &&
4682                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4683                                enabled libvpx_vp8_encoder &&
4684                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4685                                enabled libvpx_vp9_decoder &&
4686                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4687                                enabled libvpx_vp9_encoder &&
4688                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4689                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4690                                    die "libvpx enabled but no supported decoders/encoders found"
4691                              }
4692 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4693 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4694 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4695                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4696                              check_cpp_condition libx262 x264.h "X264_MPEG2"
4697 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4698                              require_cpp_condition x265.h "X265_BUILD >= 57"
4699 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4700 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4701 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4702                                { ! enabled cross_compile &&
4703                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4704                                  add_ldflags -L/opt/vc/lib/ &&
4705                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4706                                die "ERROR: mmal not found" &&
4707                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4708 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4709 enabled omx               && require_header OMX_Core.h
4710 enabled omx_rpi           && { check_header OMX_Core.h ||
4711                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4712                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4713 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4714                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4715                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4716                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4717                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4718                                die "ERROR: openssl not found"; }
4719
4720 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4721 enabled avplay &&
4722     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4723
4724 check_header linux/fb.h
4725 check_header linux/videodev2.h
4726 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4727
4728 check_header AVFoundation/AVFoundation.h
4729
4730 check_header sys/videoio.h
4731
4732 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4733 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4734 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4735 # w32api 3.12 had it defined wrong
4736 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
4737
4738 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4739 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4740     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4741     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4742     check_header "dev/ic/bt8xx.h"
4743
4744 check_header sys/soundcard.h
4745
4746 enabled alsa_indev &&
4747     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4748
4749 enabled libjack &&
4750     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4751
4752 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4753
4754 if enabled libcdio; then
4755     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4756     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4757     die "ERROR: No usable libcdio/cdparanoia found"
4758 fi
4759
4760 if enabled libxcb; then
4761     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4762     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4763     disabled libxcb_shm ||
4764         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4765     disabled libxcb_xfixes ||
4766         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4767 fi
4768
4769 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4770 # the desktop api partition
4771 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4772 #ifdef WINAPI_FAMILY
4773 #include <winapifamily.h>
4774 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4775 #error desktop, not uwp
4776 #else
4777 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4778 #endif
4779 #else
4780 #error no family set
4781 #endif
4782 EOF
4783
4784 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4785
4786 if enabled vaapi; then
4787      require_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
4788      check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4789      check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4790 fi
4791
4792 enabled vaapi &&
4793     test_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4794     enable vaapi_1
4795
4796 enabled vdpau &&
4797     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
4798
4799 enabled vdpau &&
4800     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4801
4802 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4803
4804 # add some useful compiler flags if supported
4805 check_cflags -Wdeclaration-after-statement
4806 check_cflags -Wall
4807 check_cflags -Wdisabled-optimization
4808 check_cflags -Wpointer-arith
4809 check_cflags -Wredundant-decls
4810 check_cflags -Wwrite-strings
4811 check_cflags -Wtype-limits
4812 check_cflags -Wundef
4813 check_cflags -Wmissing-prototypes
4814 check_cflags -Wstrict-prototypes
4815
4816 if enabled extra_warnings; then
4817     check_cflags -Wcast-qual
4818     check_cflags -Wextra
4819     check_cflags -Wpedantic
4820 fi
4821
4822 check_disable_warning(){
4823     warning_flag=-W${1#-Wno-}
4824     test_cflags $warning_flag && add_cflags $1
4825 }
4826
4827 check_disable_warning -Wno-parentheses
4828 check_disable_warning -Wno-switch
4829 check_disable_warning -Wno-format-zero-length
4830 check_disable_warning -Wno-pointer-sign
4831
4832 check_disable_warning_headers(){
4833     warning_flag=-W${1#-Wno-}
4834     test_cflags $warning_flag && add_cflags_headers $1
4835 }
4836
4837 check_disable_warning_headers -Wno-deprecated-declarations
4838 check_disable_warning_headers -Wno-unused-variable
4839
4840 check_objcflags -fobjc-arc && enable objc_arc
4841
4842 check_cc blocks_extension "" "void (^block)(void)"
4843
4844 # add some linker flags
4845 check_ldflags -Wl,--warn-common
4846 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4847 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4848 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4849
4850 # add some strip flags
4851 # -wN '..@*' is more selective than -x, but not available everywhere.
4852 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4853
4854 enabled neon_clobber_test &&
4855     check_ldflags -Wl,--wrap,avcodec_open2              \
4856                   -Wl,--wrap,avcodec_decode_audio4      \
4857                   -Wl,--wrap,avcodec_decode_video2      \
4858                   -Wl,--wrap,avcodec_decode_subtitle2   \
4859                   -Wl,--wrap,avcodec_encode_audio2      \
4860                   -Wl,--wrap,avcodec_encode_video2      \
4861                   -Wl,--wrap,avcodec_encode_subtitle    \
4862                   -Wl,--wrap,avcodec_send_packet        \
4863                   -Wl,--wrap,avcodec_receive_packet     \
4864                   -Wl,--wrap,avcodec_send_frame         \
4865                   -Wl,--wrap,avcodec_receive_frame      \
4866                   -Wl,--wrap,avresample_convert ||
4867     disable neon_clobber_test
4868
4869 enabled xmm_clobber_test &&
4870     check_ldflags -Wl,--wrap,avcodec_open2              \
4871                   -Wl,--wrap,avcodec_decode_audio4      \
4872                   -Wl,--wrap,avcodec_decode_video2      \
4873                   -Wl,--wrap,avcodec_decode_subtitle2   \
4874                   -Wl,--wrap,avcodec_encode_audio2      \
4875                   -Wl,--wrap,avcodec_encode_video2      \
4876                   -Wl,--wrap,avcodec_encode_subtitle    \
4877                   -Wl,--wrap,avcodec_send_packet        \
4878                   -Wl,--wrap,avcodec_receive_packet     \
4879                   -Wl,--wrap,avcodec_send_frame         \
4880                   -Wl,--wrap,avcodec_receive_frame      \
4881                   -Wl,--wrap,avresample_convert         \
4882                   -Wl,--wrap,sws_scale ||
4883     disable xmm_clobber_test
4884
4885 check_ld proper_dce <<EOF
4886 extern con