configure: Add check_cmd() helper function to simplify some expressions
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
191   --enable-libcdio           audio CD input
192   --enable-libdc1394         IEEE 1394/Firewire camera input
193   --enable-libdcadec         DCA audio decoding
194   --enable-libfaac           AAC audio encoding
195   --enable-libfdk-aac        AAC audio encoding/decoding
196   --enable-libfontconfig     font configuration and management
197   --enable-libfreetype       font rendering
198   --enable-libgsm            GSM audio encoding/decoding
199   --enable-libhdcd           HDCD decoding filter
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libjack           JACK audio sound server
202   --enable-libkvazaar        HEVC video encoding
203   --enable-libmp3lame        MP3 audio encoding
204   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
205   --enable-libopencore-amrwb AMR-WB audio decoding
206   --enable-libopencv         computer vision
207   --enable-libopenh264       H.264 video encoding/decoding
208   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
209   --enable-libopus           Opus audio encoding/decoding
210   --enable-libpulse          Pulseaudio sound server
211   --enable-librtmp           RTMP streaming
212   --enable-libschroedinger   Dirac video encoding/decoding
213   --enable-libsnappy         snappy compression
214   --enable-libspeex          Speex audio encoding/decoding
215   --enable-libtheora         Theora video encoding/decoding
216   --enable-libtwolame        MP2 audio encoding
217   --enable-libvo-aacenc      AAC audio encoding
218   --enable-libvo-amrwbenc    AMR-WB audio encoding
219   --enable-libvorbis         Vorbis audio encoding/decoding
220   --enable-libvpx            VP* video encoding/decoding
221   --enable-libwavpack        Wavpack audio encoding/decoding
222   --enable-libwebp           WebP image encoding/decoding
223   --enable-libx264           H.264 video encoding
224   --enable-libx265           HEVC video encoding
225   --enable-libxavs           Chinese AVS video encoding
226   --enable-libxcb            X window system protocol communication
227   --enable-libxcb-shm        X11 shm communication [auto]
228   --enable-libxcb-xfixes     X11 mouse rendering [auto]
229   --enable-libxvid           MPEG-4 ASP video encoding
230   --enable-openssl           crypto
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-amf     AMF video encoding code [auto]
235   --enable-cuda    Nvidia CUDA (dynamically linked)
236   --enable-cuvid   Nvidia CUVID video decode acceleration
237   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
238   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
239   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
240   --enable-libnpp  Nvidia CUDA processing
241   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
242   --enable-nvenc   Nvidia video encoding
243   --enable-omx     OpenMAX IL
244   --enable-omx-rpi OpenMAX IL for Raspberry Pi
245   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
246   --enable-vda     Apple Video Decode Acceleration [auto]
247   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
248
249 Toolchain options:
250   --arch=ARCH              select architecture [$arch]
251   --cpu=CPU                select the minimum required CPU (affects
252                            instruction selection, may crash on older CPUs)
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --cc=CC                  use C compiler CC [$cc_default]
266   --objcc=OCC              use ObjC compiler OCC [$cc_default]
267   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
268   --ld=LD                  use linker LD
269   --x86asmexe=X86ASM       use x86 assembler X86ASM
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-x86asm         disable use of standalone x86 assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --disable-valgrind-backtrace do not print a backtrace under Valgrind
342                            (only applies to --disable-optimizations builds)
343   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
344                            in the name) of tests whose result is ignored
345
346 NOTE: Object files are built at the place where configure is launched.
347 EOF
348   exit 0
349 }
350
351 log(){
352     echo "$@" >> $logfile
353 }
354
355 log_file(){
356     log BEGIN $1
357     i=1
358     while read line; do
359         printf '%5s   %s\n' "${i}" "${line}"
360         i=$(($i+1))
361     done < $1 >> $logfile
362     log END $1
363 }
364
365 echolog(){
366     log "$@"
367     echo "$@"
368 }
369
370 warn(){
371     log "WARNING: $*"
372     WARNINGS="${WARNINGS}WARNING: $*\n"
373 }
374
375 die(){
376     echolog "$@"
377     cat <<EOF
378
379 If you think configure made a mistake, make sure you are using the latest
380 version from Git.  If the latest version fails, report the problem to the
381 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
382 EOF
383     if disabled logging; then
384         cat <<EOF
385 Rerun configure with logging enabled (do not use --disable-logging), and
386 include the log this produces with your report.
387 EOF
388     else
389         cat <<EOF
390 Include the log file "$logfile" produced by configure as this will help
391 solving the problem.
392 EOF
393     fi
394     exit 1
395 }
396
397 # Avoid locale weirdness, besides we really just want to translate ASCII.
398 toupper(){
399     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
400 }
401
402 tolower(){
403     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
404 }
405
406 c_escape(){
407     echo "$*" | sed 's/["\\]/\\\0/g'
408 }
409
410 sh_quote(){
411     v=$(echo "$1" | sed "s/'/'\\\\''/g")
412     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
413     echo "$v"
414 }
415
416 cleanws(){
417     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
418 }
419
420 filter(){
421     pat=$1
422     shift
423     for v; do
424         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
425     done
426 }
427
428 filter_out(){
429     pat=$1
430     shift
431     for v; do
432         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
433     done
434 }
435
436 map(){
437     m=$1
438     shift
439     for v; do eval $m; done
440 }
441
442 add_suffix(){
443     suffix=$1
444     shift
445     for v; do echo ${v}${suffix}; done
446 }
447
448 set_all(){
449     value=$1
450     shift
451     for var in $*; do
452         eval $var=$value
453     done
454 }
455
456 set_weak(){
457     value=$1
458     shift
459     for var; do
460         eval : \${$var:=$value}
461     done
462 }
463
464 sanitize_var_name(){
465     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
466 }
467
468 set_sanitized(){
469     var=$1
470     shift
471     eval $(sanitize_var_name "$var")='$*'
472 }
473
474 get_sanitized(){
475     eval echo \$$(sanitize_var_name "$1")
476 }
477
478 pushvar(){
479     for pvar in $*; do
480         eval level=\${${pvar}_level:=0}
481         eval ${pvar}_${level}="\$$pvar"
482         eval ${pvar}_level=$(($level+1))
483     done
484 }
485
486 popvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:-0}
489         test $level = 0 && continue
490         eval level=$(($level-1))
491         eval $pvar="\${${pvar}_${level}}"
492         eval ${pvar}_level=$level
493         eval unset ${pvar}_${level}
494     done
495 }
496
497 enable(){
498     set_all yes $*
499 }
500
501 disable(){
502     set_all no $*
503 }
504
505 enable_weak(){
506     set_weak yes $*
507 }
508
509 disable_weak(){
510     set_weak no $*
511 }
512
513 enable_sanitized(){
514     for var; do
515         enable $(sanitize_var_name $var)
516     done
517 }
518
519 disable_sanitized(){
520     for var; do
521         disable $(sanitize_var_name $var)
522     done
523 }
524
525 do_enable_deep(){
526     for var; do
527         enabled $var && continue
528         eval sel="\$${var}_select"
529         eval sgs="\$${var}_suggest"
530         pushvar var sgs
531         enable_deep $sel
532         popvar sgs
533         enable_deep_weak $sgs
534         popvar var
535     done
536 }
537
538 enable_deep(){
539     do_enable_deep $*
540     enable $*
541 }
542
543 enable_deep_weak(){
544     for var; do
545         disabled $var && continue
546         pushvar var
547         do_enable_deep $var
548         popvar var
549         enable_weak $var
550     done
551 }
552
553 enabled(){
554     test "${1#!}" = "$1" && op="=" || op="!="
555     eval test "x\$${1#!}" $op "xyes"
556 }
557
558 disabled(){
559     test "${1#!}" = "$1" && op="=" || op="!="
560     eval test "x\$${1#!}" $op "xno"
561 }
562
563 enabled_all(){
564     for opt; do
565         enabled $opt || return 1
566     done
567 }
568
569 disabled_all(){
570     for opt; do
571         disabled $opt || return 1
572     done
573 }
574
575 enabled_any(){
576     for opt; do
577         enabled $opt && return 0
578     done
579 }
580
581 disabled_any(){
582     for opt; do
583         disabled $opt && return 0
584     done
585     return 1
586 }
587
588 set_default(){
589     for opt; do
590         eval : \${$opt:=\$${opt}_default}
591     done
592 }
593
594 is_in(){
595     value=$1
596     shift
597     for var in $*; do
598         [ $var = $value ] && return 0
599     done
600     return 1
601 }
602
603 check_deps(){
604     for cfg; do
605         enabled ${cfg}_checking && die "Circular dependency for $cfg."
606         disabled ${cfg}_checking && continue
607         enable ${cfg}_checking
608
609         eval dep_all="\$${cfg}_deps"
610         eval dep_any="\$${cfg}_deps_any"
611         eval dep_con="\$${cfg}_conflict"
612         eval dep_sel="\$${cfg}_select"
613         eval dep_sgs="\$${cfg}_suggest"
614         eval dep_ifa="\$${cfg}_if"
615         eval dep_ifn="\$${cfg}_if_any"
616
617         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
618         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
619         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
620
621         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
622         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
623         enabled_all  $dep_all || disable $cfg
624         enabled_any  $dep_any || disable $cfg
625         disabled_all $dep_con || disable $cfg
626         disabled_any $dep_sel && disable $cfg
627
628         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
629
630         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
631             # filter out library deps, these do not belong in extralibs
632             is_in $dep $LIBRARY_LIST && continue
633             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
634         done
635
636         disable ${cfg}_checking
637     done
638 }
639
640 print_config(){
641     pfx=$1
642     files=$2
643     shift 2
644     map 'eval echo "$v \${$v:-no}"' "$@" |
645     awk "BEGIN { split(\"$files\", files) }
646         {
647             c = \"$pfx\" toupper(\$1);
648             v = \$2;
649             sub(/yes/, 1, v);
650             sub(/no/,  0, v);
651             for (f in files) {
652                 file = files[f];
653                 if (file ~ /\\.h\$/) {
654                     printf(\"#define %s %d\\n\", c, v) >>file;
655                 } else if (file ~ /\\.asm\$/) {
656                     printf(\"%%define %s %d\\n\", c, v) >>file;
657                 } else if (file ~ /\\.mak\$/) {
658                     n = -v ? \"\" : \"!\";
659                     printf(\"%s%s=yes\\n\", n, c) >>file;
660                 }
661             }
662         }"
663 }
664
665 print_enabled(){
666     suf=$1
667     shift
668     for v; do
669         enabled $v && printf "%s\n" ${v%$suf}
670     done
671 }
672
673 append(){
674     var=$1
675     shift
676     eval "$var=\"\$$var $*\""
677 }
678
679 prepend(){
680     var=$1
681     shift
682     eval "$var=\"$* \$$var\""
683 }
684
685 unique(){
686     var=$1
687     uniq_list=""
688     for tok in $(eval echo \$$var); do
689         uniq_list="$(filter_out $tok $uniq_list) $tok"
690     done
691     eval "$var=\"${uniq_list}\""
692 }
693
694 resolve(){
695     var=$1
696     tmpvar=
697     for entry in $(eval echo \$$var); do
698         tmpvar="$tmpvar $(eval echo \$${entry})"
699     done
700     eval "$var=\"${tmpvar}\""
701 }
702
703 add_cppflags(){
704     append CPPFLAGS "$@"
705 }
706
707 add_cflags(){
708     append CFLAGS $($cflags_filter "$@")
709 }
710
711 add_cflags_headers(){
712     append CFLAGS_HEADERS $($cflags_filter "$@")
713 }
714
715 add_asflags(){
716     append ASFLAGS $($asflags_filter "$@")
717 }
718
719 add_objcflags(){
720     append OBJCFLAGS $($objcflags_filter "$@")
721 }
722
723 add_ldflags(){
724     append LDFLAGS $($ldflags_filter "$@")
725 }
726
727 add_ldexeflags(){
728     append LDEXEFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldsoflags(){
732     append LDSOFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 test_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 test_cc(){
775     log test_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 test_objcc(){
782     log test_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 test_cpp(){
789     log test_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 test_as(){
800     log test_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_cmd(){
807     log check_cmd "$@"
808     cmd=$1
809     disabled $cmd && return
810     disable $cmd
811     test_cmd $@ && enable $cmd
812 }
813
814 check_inline_asm(){
815     log check_inline_asm "$@"
816     name="$1"
817     code="$2"
818     shift 2
819     disable $name
820     test_cc "$@" <<EOF && enable $name
821 void foo(void){ __asm__ volatile($code); }
822 EOF
823 }
824
825 check_insn(){
826     log check_insn "$@"
827     check_inline_asm ${1}_inline "$2"
828     echo "$2" | test_as && enable ${1}_external || disable ${1}_external
829 }
830
831 test_x86asm(){
832     log test_x86asm "$@"
833     echo "$1" > $TMPS
834     log_file $TMPS
835     shift 1
836     test_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
837 }
838
839 ld_o(){
840     eval printf '%s\\n' $LD_O
841 }
842
843 test_ld(){
844     log test_ld "$@"
845     flags=$(filter_out '-l*' "$@")
846     libs=$(filter '-l*' "$@")
847     test_cc $($cflags_filter $flags) || return
848     flags=$($ldflags_filter $flags)
849     libs=$($ldflags_filter $libs)
850     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
851 }
852
853 print_include(){
854     hdr=$1
855     test "${hdr%.h}" = "${hdr}" &&
856         echo "#include $hdr"    ||
857         echo "#include <$hdr>"
858 }
859
860 test_code(){
861     log test_code "$@"
862     check=$1
863     headers=$2
864     code=$3
865     shift 3
866     {
867         for hdr in $headers; do
868             print_include $hdr
869         done
870         echo "int main(void) { $code; return 0; }"
871     } | test_$check "$@"
872 }
873
874 check_cppflags(){
875     log check_cppflags "$@"
876     test_cpp "$@" <<EOF && add_cppflags "$@"
877 #include <stdlib.h>;
878 EOF
879 }
880
881 test_cflags(){
882     log test_cflags "$@"
883     set -- $($cflags_filter "$@")
884     test_cc "$@" <<EOF
885 int x;
886 EOF
887 }
888
889 check_cflags(){
890     log check_cflags "$@"
891     test_cflags "$@" && add_cflags "$@"
892 }
893
894 test_objcflags(){
895     log test_objcflags "$@"
896     set -- $($objcflags_filter "$@")
897     test_objcc "$@" <<EOF
898 int x;
899 EOF
900 }
901
902 check_objcflags(){
903     log check_objcflags "$@"
904     test_objcflags "$@" && add_objcflags "$@"
905 }
906
907 test_ldflags(){
908     log test_ldflags "$@"
909     set -- $($ldflags_filter "$@")
910     test_ld "$@" <<EOF
911 int main(void){ return 0; }
912 EOF
913 }
914
915 check_ldflags(){
916     log check_ldflags "$@"
917     test_ldflags "$@" && add_ldflags "$@"
918 }
919
920 test_stripflags(){
921     log test_stripflags "$@"
922     # call test_cc to get a fresh TMPO
923     test_cc <<EOF
924 int main(void) { return 0; }
925 EOF
926     test_cmd $strip $STRIPFLAGS "$@" $TMPO
927 }
928
929 check_stripflags(){
930     log check_stripflags "$@"
931     test_stripflags "$@" && add_stripflags "$@"
932 }
933
934 check_header(){
935     log check_header "$@"
936     headers=$1
937     shift
938     disable_sanitized $headers
939     {
940         for hdr in $headers; do
941             print_include $hdr
942         done
943         echo "int x;"
944     } | test_cpp "$@" && enable_sanitized $headers
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     test_ld "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     test_ld "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return 0; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
986 }
987
988 test_cpp_condition(){
989     log test_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     test_cpp "$@" <<EOF
994 #include <$header>
995 #if !($condition)
996 #error "unsatisfied condition: $condition"
997 #endif
998 EOF
999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     test_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 test_pkg_config(){
1026     log test_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         set_sanitized "${name}_cflags"    $pkg_cflags &&
1040         set_sanitized "${name}_extralibs" $pkg_libs
1041 }
1042
1043 check_pkg_config(){
1044     log check_pkg_config "$@"
1045     name="$1"
1046     test_pkg_config "$@" &&
1047         eval add_cflags \$${name}_cflags
1048 }
1049
1050 test_exec(){
1051     log test_exec "$@"
1052     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1053 }
1054
1055 check_exec_crash(){
1056     log check_exec_crash "$@"
1057     code=$(cat)
1058
1059     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1060     # are safe but may not be available everywhere.  Thus we use
1061     # raise(SIGTERM) instead.  The check is run in a subshell so we
1062     # can redirect the "Terminated" message from the shell.  SIGBUS
1063     # is not defined by standard C so it is used conditionally.
1064
1065     (test_exec "$@") >> $logfile 2>&1 <<EOF
1066 #include <signal.h>
1067 static void sighandler(int sig){
1068     raise(SIGTERM);
1069 }
1070 int foo(void){
1071     $code
1072 }
1073 int (*func_ptr)(void) = foo;
1074 int main(void){
1075     signal(SIGILL, sighandler);
1076     signal(SIGFPE, sighandler);
1077     signal(SIGSEGV, sighandler);
1078 #ifdef SIGBUS
1079     signal(SIGBUS, sighandler);
1080 #endif
1081     return func_ptr();
1082 }
1083 EOF
1084 }
1085
1086 check_type(){
1087     log check_type "$@"
1088     headers=$1
1089     type=$2
1090     shift 2
1091     disable_sanitized "$type"
1092     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1093 }
1094
1095 check_struct(){
1096     log check_struct "$@"
1097     headers=$1
1098     struct=$2
1099     member=$3
1100     shift 3
1101     disable_sanitized "${struct}_${member}"
1102     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1103         enable_sanitized "${struct}_${member}"
1104 }
1105
1106 check_builtin(){
1107     log check_builtin "$@"
1108     name=$1
1109     shift
1110     disable "$name"
1111     test_code ld "$@" && enable "$name"
1112 }
1113
1114 check_compile_assert(){
1115     log check_compile_assert "$@"
1116     name=$1
1117     headers=$2
1118     condition=$3
1119     shift 3
1120     disable "$name"
1121     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1122 }
1123
1124 require(){
1125     log require "$@"
1126     name_version="$1"
1127     name="${1%% *}"
1128     shift
1129     check_lib $name "$@" || die "ERROR: $name_version not found"
1130 }
1131
1132 require_header(){
1133     log require_header "$@"
1134     headers="$1"
1135     check_header "$@" || die "ERROR: $headers not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require_cpp_condition "$@"
1140     condition="$2"
1141     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1142 }
1143
1144 require_pkg_config(){
1145     log require_pkg_config "$@"
1146     pkg_version="$2"
1147     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1148 }
1149
1150 hostcc_e(){
1151     eval printf '%s\\n' $HOSTCC_E
1152 }
1153
1154 hostcc_o(){
1155     eval printf '%s\\n' $HOSTCC_O
1156 }
1157
1158 test_host_cc(){
1159     log test_host_cc "$@"
1160     cat > $TMPC
1161     log_file $TMPC
1162     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1163 }
1164
1165 test_host_cpp(){
1166     log test_host_cpp "$@"
1167     cat > $TMPC
1168     log_file $TMPC
1169     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1170 }
1171
1172 check_host_cppflags(){
1173     log check_host_cppflags "$@"
1174     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1175 #include <stdlib.h>;
1176 EOF
1177 }
1178
1179 check_host_cflags(){
1180     log check_host_cflags "$@"
1181     set -- $($host_cflags_filter "$@")
1182     test_host_cc "$@" <<EOF && append host_cflags "$@"
1183 int x;
1184 EOF
1185 }
1186
1187 test_host_cpp_condition(){
1188     log test_host_cpp_condition "$@"
1189     header=$1
1190     condition=$2
1191     shift 2
1192     test_host_cpp "$@" <<EOF
1193 #include <$header>
1194 #if !($condition)
1195 #error "unsatisfied condition: $condition"
1196 #endif
1197 EOF
1198 }
1199
1200 cp_if_changed(){
1201     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1202     mkdir -p "$(dirname $2)"
1203     cp -f "$1" "$2"
1204 }
1205
1206 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1207 # system-dependent things.
1208
1209 AVCODEC_COMPONENTS="
1210     bsfs
1211     decoders
1212     encoders
1213     hwaccels
1214     parsers
1215 "
1216
1217 AVDEVICE_COMPONENTS="
1218     indevs
1219 "
1220 AVFILTER_COMPONENTS="
1221     filters
1222 "
1223 AVFORMAT_COMPONENTS="
1224     demuxers
1225     muxers
1226     protocols
1227 "
1228
1229 COMPONENT_LIST="
1230     $AVCODEC_COMPONENTS
1231     $AVDEVICE_COMPONENTS
1232     $AVFILTER_COMPONENTS
1233     $AVFORMAT_COMPONENTS
1234 "
1235
1236 EXAMPLE_LIST="
1237     decode_audio_example
1238     decode_video_example
1239     encode_audio_example
1240     encode_video_example
1241     filter_audio_example
1242     metadata_example
1243     output_example
1244     qsvdec_example
1245     transcode_aac_example
1246 "
1247
1248 # catchall list of things that require external libs to link
1249 EXTRALIBS_LIST="
1250     cpu_init
1251     cws2fws
1252 "
1253
1254 HWACCEL_LIBRARY_NONFREE_LIST="
1255     cuda
1256     cuvid
1257     libnpp
1258 "
1259 HWACCEL_LIBRARY_LIST="
1260     $HWACCEL_LIBRARY_NONFREE_LIST
1261     amf
1262     d3d11va
1263     dxva2
1264     libmfx
1265     mmal
1266     nvenc
1267     omx
1268     vaapi
1269     vda
1270     vdpau
1271 "
1272
1273 EXTERNAL_LIBRARY_GPL_LIST="
1274     libcdio
1275     libx264
1276     libx265
1277     libxavs
1278     libxvid
1279 "
1280
1281 EXTERNAL_LIBRARY_NONFREE_LIST="
1282     libfaac
1283     libfdk_aac
1284     openssl
1285 "
1286
1287 EXTERNAL_LIBRARY_VERSION3_LIST="
1288     libopencore_amrnb
1289     libopencore_amrwb
1290     libvo_aacenc
1291     libvo_amrwbenc
1292 "
1293
1294 EXTERNAL_LIBRARY_LIST="
1295     $EXTERNAL_LIBRARY_GPL_LIST
1296     $EXTERNAL_LIBRARY_NONFREE_LIST
1297     $EXTERNAL_LIBRARY_VERSION3_LIST
1298     avisynth
1299     avxsynth
1300     frei0r
1301     gnutls
1302     libbs2b
1303     libdc1394
1304     libdcadec
1305     libfontconfig
1306     libfreetype
1307     libgsm
1308     libhdcd
1309     libilbc
1310     libjack
1311     libkvazaar
1312     libmp3lame
1313     libopencv
1314     libopenh264
1315     libopenjpeg
1316     libopus
1317     libpulse
1318     librtmp
1319     libschroedinger
1320     libsnappy
1321     libspeex
1322     libtheora
1323     libtwolame
1324     libvorbis
1325     libvpx
1326     libwavpack
1327     libwebp
1328     libxcb
1329     libxcb_shm
1330     libxcb_xfixes
1331 "
1332
1333 SYSTEM_LIBRARY_LIST="
1334     bzlib
1335     zlib
1336 "
1337
1338 FEATURE_LIST="
1339     gray
1340     hardcoded_tables
1341     omx_rpi
1342     runtime_cpudetect
1343     safe_bitstream_reader
1344     shared
1345     small
1346     sram
1347     static
1348     swscale_alpha
1349 "
1350
1351 LIBRARY_LIST="
1352     avcodec
1353     avdevice
1354     avfilter
1355     avformat
1356     avresample
1357     avutil
1358     swscale
1359 "
1360
1361 LICENSE_LIST="
1362     gpl
1363     nonfree
1364     version3
1365 "
1366
1367 PROGRAM_LIST="
1368     avconv
1369     avplay
1370     avprobe
1371 "
1372
1373 SUBSYSTEM_LIST="
1374     dct
1375     doc
1376     error_resilience
1377     faan
1378     fft
1379     lsp
1380     lzo
1381     mdct
1382     network
1383     rdft
1384 "
1385
1386 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1387 CONFIG_LIST="
1388     $EXAMPLE_LIST
1389     $EXTERNAL_LIBRARY_LIST
1390     $HWACCEL_LIBRARY_LIST
1391     $FEATURE_LIST
1392     $LICENSE_LIST
1393     $LIBRARY_LIST
1394     $PROGRAM_LIST
1395     $SUBSYSTEM_LIST
1396     $SYSTEM_LIBRARY_LIST
1397     neon_clobber_test
1398     pic
1399     pod2man
1400     texi2html
1401     thumb
1402     valgrind_backtrace
1403     xmm_clobber_test
1404     $COMPONENT_LIST
1405 "
1406
1407 THREADS_LIST="
1408     pthreads
1409     w32threads
1410 "
1411
1412 ATOMICS_LIST="
1413     atomics_gcc
1414     atomics_suncc
1415     atomics_win32
1416 "
1417
1418 ARCH_LIST="
1419     aarch64
1420     alpha
1421     arm
1422     avr32
1423     avr32_ap
1424     avr32_uc
1425     bfin
1426     ia64
1427     m68k
1428     mips
1429     mips64
1430     parisc
1431     ppc
1432     ppc64
1433     s390
1434     sh4
1435     sparc
1436     sparc64
1437     tilegx
1438     tilepro
1439     tomi
1440     x86
1441     x86_32
1442     x86_64
1443 "
1444
1445 ARCH_EXT_LIST_ARM="
1446     armv5te
1447     armv6
1448     armv6t2
1449     armv8
1450     neon
1451     vfp
1452     vfpv3
1453 "
1454
1455 ARCH_EXT_LIST_X86_SIMD="
1456     amd3dnow
1457     amd3dnowext
1458     avx
1459     avx2
1460     fma3
1461     fma4
1462     mmx
1463     mmxext
1464     sse
1465     sse2
1466     sse3
1467     sse4
1468     sse42
1469     ssse3
1470     xop
1471 "
1472
1473 ARCH_EXT_LIST_PPC="
1474     altivec
1475     dcbzl
1476     ldbrx
1477     power8
1478     ppc4xx
1479     vsx
1480 "
1481
1482 ARCH_EXT_LIST_X86="
1483     $ARCH_EXT_LIST_X86_SIMD
1484     cpunop
1485     i686
1486 "
1487
1488 ARCH_EXT_LIST_MIPS="
1489     loongson
1490     mips32r1
1491     mips64r1
1492     mips32r2
1493     mips64r2
1494     mips32r6
1495     mips64r6
1496 "
1497
1498 ARCH_EXT_LIST="
1499     $ARCH_EXT_LIST_ARM
1500     $ARCH_EXT_LIST_MIPS
1501     $ARCH_EXT_LIST_PPC
1502     $ARCH_EXT_LIST_X86
1503     vis
1504 "
1505
1506 ARCH_FEATURES="
1507     aligned_stack
1508     fast_64bit
1509     fast_clz
1510     fast_cmov
1511     local_aligned_8
1512     local_aligned_16
1513     local_aligned_32
1514     simd_align_16
1515     simd_align_32
1516 "
1517
1518 BUILTIN_LIST="
1519     atomic_cas_ptr
1520     machine_rw_barrier
1521     MemoryBarrier
1522     mm_empty
1523     rdtsc
1524     sem_timedwait
1525     sync_val_compare_and_swap
1526 "
1527 HAVE_LIST_CMDLINE="
1528     inline_asm
1529     symver
1530     x86asm
1531 "
1532
1533 HAVE_LIST_PUB="
1534     bigendian
1535     fast_unaligned
1536 "
1537
1538 HEADERS_LIST="
1539     AVFoundation_AVFoundation_h
1540     arpa_inet_h
1541     cdio_paranoia_h
1542     cdio_paranoia_paranoia_h
1543     dispatch_dispatch_h
1544     dev_bktr_ioctl_bt848_h
1545     dev_bktr_ioctl_meteor_h
1546     dev_ic_bt8xx_h
1547     dev_video_bktr_ioctl_bt848_h
1548     dev_video_meteor_ioctl_meteor_h
1549     direct_h
1550     dxgidebug_h
1551     dxva_h
1552     io_h
1553     machine_ioctl_bt848_h
1554     machine_ioctl_meteor_h
1555     malloc_h
1556     poll_h
1557     sys_param_h
1558     sys_resource_h
1559     sys_select_h
1560     sys_soundcard_h
1561     sys_time_h
1562     sys_un_h
1563     sys_videoio_h
1564     unistd_h
1565     valgrind_valgrind_h
1566     windows_h
1567     winsock2_h
1568 "
1569
1570 INTRINSICS_LIST="
1571     intrinsics_neon
1572 "
1573
1574 MATH_FUNCS="
1575     atanf
1576     atan2f
1577     cbrtf
1578     cosf
1579     exp2
1580     exp2f
1581     expf
1582     isinf
1583     isnan
1584     ldexpf
1585     llrint
1586     llrintf
1587     log2
1588     log2f
1589     log10f
1590     lrint
1591     lrintf
1592     powf
1593     rint
1594     round
1595     roundf
1596     sinf
1597     trunc
1598     truncf
1599 "
1600
1601 SYSTEM_FEATURES="
1602     dos_paths
1603     libc_msvcrt
1604     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1605     section_data_rel_ro
1606     threads
1607     uwp
1608 "
1609
1610 SYSTEM_FUNCS="
1611     aligned_malloc
1612     clock_gettime
1613     closesocket
1614     CommandLineToArgvW
1615     fcntl
1616     getaddrinfo
1617     gethrtime
1618     getopt
1619     GetProcessAffinityMask
1620     GetProcessMemoryInfo
1621     GetProcessTimes
1622     getrusage
1623     GetSystemTimeAsFileTime
1624     gettimeofday
1625     gmtime_r
1626     inet_aton
1627     isatty
1628     localtime_r
1629     mach_absolute_time
1630     MapViewOfFile
1631     memalign
1632     mmap
1633     mprotect
1634     nanosleep
1635     posix_memalign
1636     sched_getaffinity
1637     SetConsoleTextAttribute
1638     setmode
1639     setrlimit
1640     Sleep
1641     strerror_r
1642     sysconf
1643     sysctl
1644     usleep
1645     VirtualAlloc
1646 "
1647
1648 SYSTEM_LIBRARIES="
1649     sdl
1650     vaapi_1
1651     vaapi_drm
1652     vaapi_x11
1653     vdpau_x11
1654     wincrypt
1655 "
1656
1657 TOOLCHAIN_FEATURES="
1658     as_arch_directive
1659     as_fpu_directive
1660     as_func
1661     as_object_arch
1662     asm_mod_q
1663     blocks_extension
1664     ebp_available
1665     ebx_available
1666     gnu_as
1667     ibm_asm
1668     inline_asm_labels
1669     pragma_deprecated
1670     symver_asm_label
1671     symver_gnu_asm
1672     vfp_args
1673     xform_asm
1674     xmm_clobbers
1675 "
1676
1677 TYPES_LIST="
1678     CONDITION_VARIABLE_Ptr
1679     CUVIDDECODECREATEINFO_bitDepthMinus8
1680     socklen_t
1681     struct_addrinfo
1682     struct_group_source_req
1683     struct_ip_mreq_source
1684     struct_ipv6_mreq
1685     struct_pollfd
1686     struct_rusage_ru_maxrss
1687     struct_sockaddr_in6
1688     struct_sockaddr_sa_len
1689     struct_sockaddr_storage
1690     struct_v4l2_frmivalenum_discrete
1691 "
1692
1693 HAVE_LIST="
1694     $ARCH_EXT_LIST
1695     $(add_suffix _external $ARCH_EXT_LIST)
1696     $(add_suffix _inline   $ARCH_EXT_LIST)
1697     $ARCH_FEATURES
1698     $BUILTIN_LIST
1699     $HAVE_LIST_CMDLINE
1700     $HAVE_LIST_PUB
1701     $HEADERS_LIST
1702     $INTRINSICS_LIST
1703     $MATH_FUNCS
1704     $SYSTEM_FEATURES
1705     $SYSTEM_FUNCS
1706     $SYSTEM_LIBRARIES
1707     $THREADS_LIST
1708     $TOOLCHAIN_FEATURES
1709     $TYPES_LIST
1710 "
1711
1712 # options emitted with CONFIG_ prefix but not available on the command line
1713 CONFIG_EXTRA="
1714     aandcttables
1715     ac3dsp
1716     adts_header
1717     audio_frame_queue
1718     audiodsp
1719     blockdsp
1720     bswapdsp
1721     cabac
1722     cbs
1723     cbs_h264
1724     cbs_h265
1725     cbs_mpeg2
1726     dirac_parse
1727     dvprofile
1728     faandct
1729     faanidct
1730     fdctdsp
1731     flacdsp
1732     fmtconvert
1733     g722dsp
1734     gmp
1735     golomb
1736     gplv3
1737     h263dsp
1738     h264chroma
1739     h264dsp
1740     h264parse
1741     h264pred
1742     h264qpel
1743     hevcparse
1744     hpeldsp
1745     huffman
1746     huffyuvdsp
1747     huffyuvencdsp
1748     idctdsp
1749     iirfilter
1750     imdct15
1751     intrax8
1752     iso_media
1753     ividsp
1754     jpegtables
1755     lgplv3
1756     libx262
1757     libxcb_shape
1758     lpc
1759     lzf
1760     me_cmp
1761     mpeg_er
1762     mpegaudio
1763     mpegaudiodsp
1764     mpegaudioheader
1765     mpegvideo
1766     mpegvideoenc
1767     mss34dsp
1768     pixblockdsp
1769     qpeldsp
1770     qsv
1771     qsvdec
1772     qsvenc
1773     qsvvpp
1774     rangecoder
1775     riffdec
1776     riffenc
1777     rtpdec
1778     rtpenc_chain
1779     rv34dsp
1780     sinewin
1781     snappy
1782     srtp
1783     startcode
1784     texturedsp
1785     texturedspenc
1786     tpeldsp
1787     vaapi_encode
1788     vc1dsp
1789     videodsp
1790     vp3dsp
1791     vp56dsp
1792     vp8dsp
1793     wma_freqs
1794     wmv2dsp
1795 "
1796
1797 CMDLINE_SELECT="
1798     $ARCH_EXT_LIST
1799     $CONFIG_LIST
1800     $HAVE_LIST_CMDLINE
1801     $THREADS_LIST
1802     asm
1803     cross_compile
1804     debug
1805     extra_warnings
1806     logging
1807     lto
1808     optimizations
1809     rpath
1810 "
1811
1812 PATHS_LIST="
1813     bindir
1814     datadir
1815     docdir
1816     incdir
1817     libdir
1818     mandir
1819     prefix
1820     shlibdir
1821 "
1822
1823 CMDLINE_SET="
1824     $PATHS_LIST
1825     ar
1826     arch
1827     as
1828     cc
1829     objcc
1830     cpu
1831     cross_prefix
1832     custom_allocator
1833     dep_cc
1834     env
1835     extra_version
1836     host_cc
1837     host_cflags
1838     host_extralibs
1839     host_ld
1840     host_ldflags
1841     host_os
1842     ignore_tests
1843     ld
1844     logfile
1845     malloc_prefix
1846     nm
1847     optflags
1848     pkg_config
1849     pkg_config_flags
1850     samples
1851     sysinclude
1852     sysroot
1853     target_exec
1854     target_os
1855     target_path
1856     target_samples
1857     toolchain
1858     x86asmexe
1859 "
1860
1861 CMDLINE_APPEND="
1862     extra_cflags
1863     extra_objcflags
1864     host_cppflags
1865 "
1866
1867 # code dependency declarations
1868
1869 # architecture extensions
1870
1871 armv5te_deps="arm"
1872 armv6_deps="arm"
1873 armv6t2_deps="arm"
1874 armv8_deps="aarch64"
1875 neon_deps_any="aarch64 arm"
1876 intrinsics_neon_deps="neon"
1877 vfp_deps_any="aarch64 arm"
1878 vfpv3_deps="vfp"
1879
1880 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1881
1882 altivec_deps="ppc"
1883 dcbzl_deps="ppc"
1884 ldbrx_deps="ppc"
1885 ppc4xx_deps="ppc"
1886 vsx_deps="altivec"
1887 power8_deps="vsx"
1888
1889 loongson_deps="mips"
1890 mips32r1_deps="mips32"
1891 mips32r2_deps="mips32"
1892 mips32r6_deps="mips32"
1893 mips64r1_deps="mips64"
1894 mips64r2_deps="mips64"
1895 mips64r6_deps="mips64"
1896
1897 vis_deps="sparc"
1898
1899 cpunop_deps="i686"
1900 x86_64_select="i686"
1901 x86_64_suggest="fast_cmov"
1902
1903 amd3dnow_deps="mmx"
1904 amd3dnowext_deps="amd3dnow"
1905 i686_deps="x86"
1906 mmx_deps="x86"
1907 mmxext_deps="mmx"
1908 sse_deps="mmxext"
1909 sse2_deps="sse"
1910 sse3_deps="sse2"
1911 ssse3_deps="sse3"
1912 sse4_deps="ssse3"
1913 sse42_deps="sse4"
1914 avx_deps="sse42"
1915 xop_deps="avx"
1916 fma3_deps="avx"
1917 fma4_deps="avx"
1918 avx2_deps="avx"
1919
1920 mmx_external_deps="x86asm"
1921 mmx_inline_deps="inline_asm x86"
1922 mmx_suggest="mmx_external mmx_inline"
1923
1924 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1925     eval dep=\$${ext}_deps
1926     eval ${ext}_external_deps='"${dep}_external"'
1927     eval ${ext}_inline_deps='"${dep}_inline"'
1928     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1929 done
1930
1931 aligned_stack_if_any="aarch64 ppc x86"
1932 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1933 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1934 fast_unaligned_if_any="aarch64 ppc x86"
1935 simd_align_16_if_any="altivec neon sse"
1936 simd_align_32_if_any="avx"
1937
1938 # system capabilities
1939 symver_if_any="symver_asm_label symver_gnu_asm"
1940 valgrind_backtrace_conflict="optimizations"
1941 valgrind_backtrace_deps="valgrind_valgrind_h"
1942
1943 # threading support
1944 atomics_gcc_if="sync_val_compare_and_swap"
1945 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1946 atomics_win32_if="MemoryBarrier"
1947 atomics_native_if_any="$ATOMICS_LIST"
1948 w32threads_deps="atomics_native"
1949 threads_if_any="$THREADS_LIST"
1950
1951 # subsystems
1952 cbs_h264_select="cbs golomb"
1953 cbs_h265_select="cbs golomb"
1954 cbs_mpeg2_select="cbs"
1955 dct_select="rdft"
1956 dirac_parse_select="golomb"
1957 error_resilience_select="me_cmp"
1958 faandct_deps="faan"
1959 faandct_select="fdctdsp"
1960 faanidct_deps="faan"
1961 faanidct_select="idctdsp"
1962 h264dsp_select="startcode"
1963 hevcparse_select="golomb"
1964 intrax8_select="blockdsp idctdsp"
1965 mdct_select="fft"
1966 rdft_select="fft"
1967 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1968 mpeg_er_select="error_resilience"
1969 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1970 mpegaudiodsp_select="dct"
1971 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1972 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1973 vc1dsp_select="h264chroma qpeldsp startcode"
1974
1975 # decoders / encoders
1976 aac_decoder_select="adts_header imdct15 mdct sinewin"
1977 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1978 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1979 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1980 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1981 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1982 adpcm_g722_decoder_select="g722dsp"
1983 adpcm_g722_encoder_select="g722dsp"
1984 aic_decoder_select="golomb idctdsp"
1985 alac_encoder_select="lpc"
1986 als_decoder_select="bswapdsp"
1987 amrnb_decoder_select="lsp"
1988 amrwb_decoder_select="lsp"
1989 amv_decoder_select="sp5x_decoder"
1990 ape_decoder_select="bswapdsp"
1991 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1992 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1993 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1994 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1995 atrac1_decoder_select="mdct sinewin"
1996 atrac3_decoder_select="mdct"
1997 atrac3p_decoder_select="mdct sinewin"
1998 bink_decoder_select="blockdsp hpeldsp"
1999 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2000 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2001 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2002 clearvideo_decoder_select="idctdsp"
2003 cllc_decoder_select="bswapdsp"
2004 comfortnoise_encoder_select="lpc"
2005 cook_decoder_select="audiodsp mdct sinewin"
2006 cscd_decoder_select="lzo"
2007 cscd_decoder_suggest="zlib"
2008 dca_decoder_select="fmtconvert mdct"
2009 dds_decoder_select="texturedsp"
2010 dnxhd_decoder_select="blockdsp idctdsp"
2011 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2012 dvvideo_decoder_select="dvprofile idctdsp"
2013 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2014 dxa_decoder_deps="zlib"
2015 dxv_decoder_select="lzf texturedsp"
2016 eac3_decoder_select="ac3_decoder"
2017 eac3_encoder_select="ac3_encoder"
2018 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2019 eatgq_decoder_select="aandcttables idctdsp"
2020 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2021 exr_decoder_deps="zlib"
2022 ffv1_decoder_select="rangecoder"
2023 ffv1_encoder_select="rangecoder"
2024 ffvhuff_decoder_select="huffyuv_decoder"
2025 ffvhuff_encoder_select="huffyuv_encoder"
2026 fic_decoder_select="golomb"
2027 flac_decoder_select="flacdsp"
2028 flac_encoder_select="bswapdsp flacdsp lpc"
2029 flashsv_decoder_deps="zlib"
2030 flashsv_encoder_deps="zlib"
2031 flashsv2_decoder_deps="zlib"
2032 flv_decoder_select="h263_decoder"
2033 flv_encoder_select="h263_encoder"
2034 fourxm_decoder_select="blockdsp bswapdsp"
2035 fraps_decoder_select="bswapdsp huffman"
2036 g2m_decoder_deps="zlib"
2037 g2m_decoder_select="blockdsp idctdsp jpegtables"
2038 h261_decoder_select="mpeg_er mpegvideo"
2039 h261_encoder_select="aandcttables mpegvideoenc"
2040 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2041 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2042 h263i_decoder_select="h263_decoder"
2043 h263p_encoder_select="h263_encoder"
2044 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2045 h264_decoder_suggest="error_resilience"
2046 hap_decoder_select="snappy texturedsp"
2047 hap_encoder_deps="libsnappy"
2048 hap_encoder_select="texturedspenc"
2049 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2050 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2051 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2052 iac_decoder_select="imc_decoder"
2053 imc_decoder_select="bswapdsp fft mdct sinewin"
2054 indeo3_decoder_select="hpeldsp"
2055 indeo4_decoder_select="ividsp"
2056 indeo5_decoder_select="ividsp"
2057 interplay_video_decoder_select="hpeldsp"
2058 jpegls_decoder_select="mjpeg_decoder"
2059 jv_decoder_select="blockdsp"
2060 lagarith_decoder_select="huffyuvdsp"
2061 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2062 magicyuv_decoder_select="huffyuvdsp"
2063 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2064 metasound_decoder_select="lsp mdct sinewin"
2065 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2066 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2067 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2068 mjpegb_decoder_select="mjpeg_decoder"
2069 mlp_decoder_select="mlp_parser"
2070 motionpixels_decoder_select="bswapdsp"
2071 mp1_decoder_select="mpegaudio"
2072 mp1float_decoder_select="mpegaudio"
2073 mp2_decoder_select="mpegaudio"
2074 mp2float_decoder_select="mpegaudio"
2075 mp3_decoder_select="mpegaudio"
2076 mp3adu_decoder_select="mpegaudio"
2077 mp3adufloat_decoder_select="mpegaudio"
2078 mp3float_decoder_select="mpegaudio"
2079 mp3on4_decoder_select="mpegaudio"
2080 mp3on4float_decoder_select="mpegaudio"
2081 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2082 mpc8_decoder_select="mpegaudiodsp"
2083 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2084 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2085 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2086 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2087 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2088 mpeg4_encoder_select="h263_encoder"
2089 msa1_decoder_select="mss34dsp"
2090 msmpeg4v1_decoder_select="h263_decoder"
2091 msmpeg4v2_decoder_select="h263_decoder"
2092 msmpeg4v2_encoder_select="h263_encoder"
2093 msmpeg4v3_decoder_select="h263_decoder"
2094 msmpeg4v3_encoder_select="h263_encoder"
2095 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2096 mts2_decoder_select="mss34dsp"
2097 mxpeg_decoder_select="mjpeg_decoder"
2098 nellymoser_decoder_select="mdct sinewin"
2099 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2100 nuv_decoder_select="idctdsp lzo"
2101 on2avc_decoder_select="mdct"
2102 opus_decoder_deps="avresample"
2103 opus_decoder_select="imdct15"
2104 png_decoder_deps="zlib"
2105 png_encoder_deps="zlib"
2106 png_encoder_select="huffyuvencdsp"
2107 prores_decoder_select="idctdsp"
2108 prores_encoder_select="fdctdsp"
2109 qcelp_decoder_select="lsp"
2110 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2111 ra_144_encoder_select="audio_frame_queue lpc"
2112 ralf_decoder_select="golomb"
2113 rscc_decoder_deps="zlib"
2114 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2115 rv10_encoder_select="h263_encoder"
2116 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2117 rv20_encoder_select="h263_encoder"
2118 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2119 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2120 screenpresso_decoder_deps="zlib"
2121 sipr_decoder_select="lsp"
2122 sp5x_decoder_select="mjpeg_decoder"
2123 svq1_decoder_select="hpeldsp"
2124 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2125 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2126 svq3_decoder_suggest="zlib"
2127 tak_decoder_select="audiodsp"
2128 tdsc_decoder_deps="zlib"
2129 tdsc_decoder_select="mjpeg_decoder"
2130 theora_decoder_select="vp3_decoder"
2131 thp_decoder_select="mjpeg_decoder"
2132 tiff_decoder_suggest="zlib"
2133 tiff_encoder_suggest="zlib"
2134 truehd_decoder_select="mlp_decoder"
2135 truemotion2_decoder_select="bswapdsp"
2136 truespeech_decoder_select="bswapdsp"
2137 tscc_decoder_deps="zlib"
2138 txd_decoder_select="texturedsp"
2139 twinvq_decoder_select="mdct lsp sinewin"
2140 utvideo_decoder_select="bswapdsp huffyuvdsp"
2141 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2142 vble_decoder_select="huffyuvdsp"
2143 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2144 vc1image_decoder_select="vc1_decoder"
2145 vorbis_decoder_select="mdct"
2146 vorbis_encoder_select="mdct"
2147 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2148 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2149 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2150 vp6a_decoder_select="vp6_decoder"
2151 vp6f_decoder_select="vp6_decoder"
2152 vp7_decoder_select="h264pred videodsp vp8dsp"
2153 vp8_decoder_select="h264pred videodsp vp8dsp"
2154 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2155 webp_decoder_select="vp8_decoder"
2156 wmapro_decoder_select="mdct sinewin wma_freqs"
2157 wmav1_decoder_select="mdct sinewin wma_freqs"
2158 wmav1_encoder_select="mdct sinewin wma_freqs"
2159 wmav2_decoder_select="mdct sinewin wma_freqs"
2160 wmav2_encoder_select="mdct sinewin wma_freqs"
2161 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2162 wmv1_decoder_select="h263_decoder"
2163 wmv1_encoder_select="h263_encoder"
2164 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2165 wmv2_encoder_select="h263_encoder wmv2dsp"
2166 wmv3_decoder_select="vc1_decoder"
2167 wmv3image_decoder_select="wmv3_decoder"
2168 zerocodec_decoder_deps="zlib"
2169 zlib_decoder_deps="zlib"
2170 zlib_encoder_deps="zlib"
2171 zmbv_decoder_deps="zlib"
2172 zmbv_encoder_deps="zlib"
2173
2174 # hardware accelerators
2175 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2176 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2177 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2178 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2179
2180 h263_vaapi_hwaccel_deps="vaapi"
2181 h263_vaapi_hwaccel_select="h263_decoder"
2182 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2183 h264_cuvid_hwaccel_select="h264_decoder"
2184 h264_d3d11va_hwaccel_deps="d3d11va"
2185 h264_d3d11va_hwaccel_select="h264_decoder"
2186 h264_d3d11va2_hwaccel_deps="d3d11va"
2187 h264_d3d11va2_hwaccel_select="h264_decoder"
2188 h264_dxva2_hwaccel_deps="dxva2"
2189 h264_dxva2_hwaccel_select="h264_decoder"
2190 h264_vaapi_hwaccel_deps="vaapi"
2191 h264_vaapi_hwaccel_select="h264_decoder"
2192 h264_vda_hwaccel_deps="vda"
2193 h264_vda_hwaccel_select="h264_decoder"
2194 h264_vda_old_hwaccel_deps="vda"
2195 h264_vda_old_hwaccel_select="h264_decoder"
2196 h264_vdpau_hwaccel_deps="vdpau"
2197 h264_vdpau_hwaccel_select="h264_decoder"
2198 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2199 hevc_cuvid_hwaccel_select="hevc_decoder"
2200 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2201 hevc_d3d11va_hwaccel_select="hevc_decoder"
2202 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2203 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2204 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2205 hevc_dxva2_hwaccel_select="hevc_decoder"
2206 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2207 hevc_vaapi_hwaccel_select="hevc_decoder"
2208 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2209 hevc_vdpau_hwaccel_select="hevc_decoder"
2210 mpeg1_vdpau_hwaccel_deps="vdpau"
2211 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2212 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2213 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2214 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2215 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2216 mpeg2_dxva2_hwaccel_deps="dxva2"
2217 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2218 mpeg2_vaapi_hwaccel_deps="vaapi"
2219 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2220 mpeg2_vdpau_hwaccel_deps="vdpau"
2221 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2222 mpeg4_vaapi_hwaccel_deps="vaapi"
2223 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2224 mpeg4_vdpau_hwaccel_deps="vdpau"
2225 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2226 vc1_d3d11va_hwaccel_deps="d3d11va"
2227 vc1_d3d11va_hwaccel_select="vc1_decoder"
2228 vc1_d3d11va2_hwaccel_deps="d3d11va"
2229 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2230 vc1_dxva2_hwaccel_deps="dxva2"
2231 vc1_dxva2_hwaccel_select="vc1_decoder"
2232 vc1_vaapi_hwaccel_deps="vaapi"
2233 vc1_vaapi_hwaccel_select="vc1_decoder"
2234 vc1_vdpau_hwaccel_deps="vdpau"
2235 vc1_vdpau_hwaccel_select="vc1_decoder"
2236 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2237 vp8_vaapi_hwaccel_select="vp8_decoder"
2238 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2239 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2240 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2241 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2242 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2243
2244 # hardware-accelerated codecs
2245 amf_deps_any="libdl LoadLibrary"
2246 nvenc_deps_any="libdl LoadLibrary"
2247 omx_deps="libdl pthreads"
2248 omx_rpi_select="omx"
2249 qsv_deps="libmfx"
2250 qsvdec_select="qsv"
2251 qsvenc_select="qsv"
2252 qsvvpp_select="qsv"
2253 vaapi_encode_deps="vaapi"
2254
2255 hwupload_cuda_filter_deps="cuda"
2256 scale_npp_filter_deps="cuda libnpp"
2257
2258 h264_amf_encoder_deps="amf"
2259 h264_mmal_decoder_deps="mmal"
2260 h264_nvenc_encoder_deps="nvenc"
2261 h264_omx_encoder_deps="omx"
2262 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2263 h264_qsv_encoder_select="qsvenc"
2264 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2265 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2266 hevc_amf_encoder_deps="amf"
2267 hevc_nvenc_encoder_deps="nvenc"
2268 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2269 hevc_qsv_encoder_select="hevcparse qsvenc"
2270 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2271 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2272 mjpeg_qsv_encoder_deps="libmfx"
2273 mjpeg_qsv_encoder_select="qsvenc"
2274 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2275 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2276 mpeg2_mmal_decoder_deps="mmal"
2277 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2278 mpeg2_qsv_encoder_select="qsvenc"
2279 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2280 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2281 mpeg4_omx_encoder_deps="omx"
2282 vc1_mmal_decoder_deps="mmal"
2283 vc1_qsv_decoder_select="qsvdec vc1_parser"
2284 vp8_qsv_decoder_select="qsvdec vp8_parser"
2285 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2286 vp8_vaapi_encoder_select="vaapi_encode"
2287 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2288 vp9_vaapi_encoder_select="vaapi_encode"
2289
2290 nvenc_h264_encoder_select="h264_nvenc_encoder"
2291 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2292
2293 # parsers
2294 aac_parser_select="adts_header"
2295 h264_parser_select="golomb h264dsp h264parse"
2296 hevc_parser_select="hevcparse"
2297 mpegaudio_parser_select="mpegaudioheader"
2298 mpegvideo_parser_select="mpegvideo"
2299 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2300 vc1_parser_select="vc1dsp"
2301
2302 # bitstream_filters
2303 aac_adtstoasc_bsf_select="adts_header"
2304 h264_metadata_bsf_select="cbs_h264"
2305 h264_redundant_pps_bsf_select="cbs_h264"
2306 hevc_metadata_bsf_select="cbs_h265"
2307 mjpeg2jpeg_bsf_select="jpegtables"
2308 mpeg2_metadata_bsf_select="cbs_mpeg2"
2309 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2310
2311 # external libraries
2312 avisynth_deps="LoadLibrary"
2313 avxsynth_deps="libdl"
2314 avisynth_demuxer_deps_any="avisynth avxsynth"
2315 avisynth_demuxer_select="riffdec"
2316 libdcadec_decoder_deps="libdcadec"
2317 libfaac_encoder_deps="libfaac"
2318 libfaac_encoder_select="audio_frame_queue"
2319 libfdk_aac_decoder_deps="libfdk_aac"
2320 libfdk_aac_encoder_deps="libfdk_aac"
2321 libfdk_aac_encoder_select="audio_frame_queue"
2322 libgsm_decoder_deps="libgsm"
2323 libgsm_encoder_deps="libgsm"
2324 libgsm_ms_decoder_deps="libgsm"
2325 libgsm_ms_encoder_deps="libgsm"
2326 libilbc_decoder_deps="libilbc"
2327 libilbc_encoder_deps="libilbc"
2328 libkvazaar_encoder_deps="libkvazaar"
2329 libmp3lame_encoder_deps="libmp3lame"
2330 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2331 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2332 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2333 libopencore_amrnb_encoder_select="audio_frame_queue"
2334 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2335 libopenh264_decoder_deps="libopenh264"
2336 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2337 libopenh264_encoder_deps="libopenh264"
2338 libopenjpeg_decoder_deps="libopenjpeg"
2339 libopenjpeg_encoder_deps="libopenjpeg"
2340 libopus_decoder_deps="libopus"
2341 libopus_encoder_deps="libopus"
2342 libopus_encoder_select="audio_frame_queue"
2343 libschroedinger_decoder_deps="libschroedinger"
2344 libschroedinger_encoder_deps="libschroedinger"
2345 libspeex_decoder_deps="libspeex"
2346 libspeex_encoder_deps="libspeex"
2347 libspeex_encoder_select="audio_frame_queue"
2348 libtheora_encoder_deps="libtheora"
2349 libtwolame_encoder_deps="libtwolame"
2350 libvo_aacenc_encoder_deps="libvo_aacenc"
2351 libvo_aacenc_encoder_select="audio_frame_queue"
2352 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2353 libvorbis_encoder_deps="libvorbis"
2354 libvorbis_encoder_select="audio_frame_queue"
2355 libvpx_vp8_decoder_deps="libvpx"
2356 libvpx_vp8_encoder_deps="libvpx"
2357 libvpx_vp9_decoder_deps="libvpx"
2358 libvpx_vp9_encoder_deps="libvpx"
2359 libwavpack_encoder_deps="libwavpack"
2360 libwavpack_encoder_select="audio_frame_queue"
2361 libwebp_encoder_deps="libwebp"
2362 libx262_encoder_deps="libx262"
2363 libx264_encoder_deps="libx264"
2364 libx265_encoder_deps="libx265"
2365 libxavs_encoder_deps="libxavs"
2366 libxvid_encoder_deps="libxvid mkstemp"
2367
2368 # demuxers / muxers
2369 ac3_demuxer_select="ac3_parser"
2370 asf_demuxer_select="riffdec"
2371 asf_muxer_select="riffenc"
2372 asf_stream_muxer_select="asf_muxer"
2373 avi_demuxer_select="iso_media riffdec"
2374 avi_muxer_select="riffenc"
2375 caf_demuxer_select="iso_media riffdec"
2376 dash_muxer_select="mp4_muxer"
2377 dirac_demuxer_select="dirac_parser"
2378 dv_demuxer_select="dvprofile"
2379 dv_muxer_select="dvprofile"
2380 dxa_demuxer_select="riffdec"
2381 eac3_demuxer_select="ac3_parser"
2382 f4v_muxer_select="mov_muxer"
2383 flac_demuxer_select="flac_parser"
2384 hds_muxer_select="flv_muxer"
2385 hls_muxer_select="mpegts_muxer"
2386 ipod_muxer_select="mov_muxer"
2387 ismv_muxer_select="mov_muxer"
2388 matroska_audio_muxer_select="matroska_muxer"
2389 matroska_demuxer_select="iso_media riffdec"
2390 matroska_demuxer_suggest="bzlib lzo zlib"
2391 matroska_muxer_select="iso_media riffenc"
2392 mmf_muxer_select="riffenc"
2393 mov_demuxer_select="iso_media riffdec"
2394 mov_demuxer_suggest="zlib"
2395 mov_muxer_select="iso_media riffenc rtpenc_chain"
2396 mp3_demuxer_select="mpegaudio_parser"
2397 mp3_muxer_select="mpegaudioheader"
2398 mp4_muxer_select="mov_muxer"
2399 mpegts_demuxer_select="iso_media"
2400 mpegts_muxer_select="adts_muxer latm_muxer"
2401 mpegtsraw_demuxer_select="mpegts_demuxer"
2402 mxf_d10_muxer_select="mxf_muxer"
2403 nut_muxer_select="riffenc"
2404 nuv_demuxer_select="riffdec"
2405 oga_muxer_select="ogg_muxer"
2406 ogg_demuxer_select="dirac_parse"
2407 opus_muxer_select="ogg_muxer"
2408 psp_muxer_select="mov_muxer"
2409 rtp_demuxer_select="sdp_demuxer"
2410 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2411 rtsp_demuxer_select="http_protocol rtpdec"
2412 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2413 sap_demuxer_select="sdp_demuxer"
2414 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2415 sdp_demuxer_select="rtpdec"
2416 smoothstreaming_muxer_select="ismv_muxer"
2417 spdif_demuxer_select="adts_header"
2418 spdif_muxer_select="adts_header"
2419 spx_muxer_select="ogg_muxer"
2420 swf_demuxer_suggest="zlib"
2421 tak_demuxer_select="tak_parser"
2422 tg2_muxer_select="mov_muxer"
2423 tgp_muxer_select="mov_muxer"
2424 w64_demuxer_select="wav_demuxer"
2425 wav_demuxer_select="riffdec"
2426 wav_muxer_select="riffenc"
2427 webm_muxer_select="iso_media riffenc"
2428 wtv_demuxer_select="mpegts_demuxer riffdec"
2429 xmv_demuxer_select="riffdec"
2430 xwma_demuxer_select="riffdec"
2431
2432 # indevs
2433 alsa_indev_deps="alsa"
2434 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2435 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2436 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2437 fbdev_indev_deps="linux_fb_h"
2438 jack_indev_deps="libjack"
2439 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2440 libcdio_indev_deps="libcdio"
2441 libdc1394_indev_deps="libdc1394"
2442 oss_indev_deps_any="sys_soundcard_h"
2443 pulse_indev_deps="libpulse"
2444 sndio_indev_deps="sndio"
2445 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2446 vfwcap_indev_deps="vfw32 vfwcap_defines"
2447 xcbgrab_indev_deps="libxcb libxcb_shape"
2448 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2449
2450 # protocols
2451 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2452 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2453 ffrtmpcrypt_protocol_select="tcp_protocol"
2454 ffrtmphttp_protocol_conflict="librtmp_protocol"
2455 ffrtmphttp_protocol_select="http_protocol"
2456 gopher_protocol_select="network"
2457 http_protocol_select="tcp_protocol"
2458 http_protocol_suggest="zlib"
2459 httpproxy_protocol_select="tcp_protocol"
2460 httpproxy_protocol_suggest="zlib"
2461 https_protocol_select="tls_protocol"
2462 https_protocol_suggest="zlib"
2463 icecast_protocol_select="http_protocol"
2464 librtmp_protocol_deps="librtmp"
2465 librtmpe_protocol_deps="librtmp"
2466 librtmps_protocol_deps="librtmp"
2467 librtmpt_protocol_deps="librtmp"
2468 librtmpte_protocol_deps="librtmp"
2469 mmsh_protocol_select="http_protocol"
2470 mmst_protocol_select="network"
2471 rtmp_protocol_conflict="librtmp_protocol"
2472 rtmp_protocol_select="tcp_protocol"
2473 rtmp_protocol_suggest="zlib"
2474 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2475 rtmpe_protocol_suggest="zlib"
2476 rtmps_protocol_conflict="librtmp_protocol"
2477 rtmps_protocol_select="tls_protocol"
2478 rtmps_protocol_suggest="zlib"
2479 rtmpt_protocol_select="ffrtmphttp_protocol"
2480 rtmpt_protocol_suggest="zlib"
2481 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2482 rtmpte_protocol_suggest="zlib"
2483 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2484 rtmpts_protocol_suggest="zlib"
2485 rtp_protocol_select="udp_protocol"
2486 sctp_protocol_deps="struct_sctp_event_subscribe"
2487 sctp_protocol_select="network"
2488 srtp_protocol_select="rtp_protocol srtp"
2489 tcp_protocol_select="network"
2490 tls_protocol_deps_any="gnutls openssl"
2491 tls_protocol_select="tcp_protocol"
2492 udp_protocol_select="network"
2493 unix_protocol_deps="sys_un_h"
2494 unix_protocol_select="network"
2495
2496 # filters
2497 asyncts_filter_deps="avresample"
2498 blackframe_filter_deps="gpl"
2499 boxblur_filter_deps="gpl"
2500 bs2b_filter_deps="libbs2b"
2501 cropdetect_filter_deps="gpl"
2502 deinterlace_qsv_filter_deps="libmfx"
2503 deinterlace_vaapi_filter_deps="vaapi"
2504 delogo_filter_deps="gpl"
2505 drawtext_filter_deps="libfreetype"
2506 drawtext_filter_suggest="libfontconfig"
2507 frei0r_filter_deps="frei0r libdl"
2508 frei0r_src_filter_deps="frei0r libdl"
2509 hdcd_filter_deps="libhdcd"
2510 hqdn3d_filter_deps="gpl"
2511 interlace_filter_deps="gpl"
2512 movie_filter_deps="avcodec avformat"
2513 ocv_filter_deps="libopencv"
2514 overlay_qsv_filter_deps="libmfx"
2515 overlay_qsv_filter_select="qsvvpp"
2516 resample_filter_deps="avresample"
2517 scale_filter_deps="swscale"
2518 scale_qsv_filter_deps="libmfx"
2519 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2520 vpp_qsv_filter_deps="libmfx"
2521 vpp_qsv_filter_select="qsvvpp"
2522
2523 # examples
2524 decode_audio_example_deps="avcodec avutil"
2525 decode_video_example_deps="avcodec avutil"
2526 encode_audio_example_deps="avcodec avutil"
2527 encode_video_example_deps="avcodec avutil"
2528 filter_audio_example_deps="avfilter avutil"
2529 metadata_example_deps="avformat avutil"
2530 output_example_deps="avcodec avformat avresample avutil swscale"
2531 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2532 transcode_aac_example_deps="avcodec avformat avresample"
2533
2534 # EXTRALIBS_LIST
2535 cpu_init_extralibs="pthreads_extralibs"
2536 cws2fws_extralibs="zlib_extralibs"
2537
2538 # libraries, in linking order
2539 avcodec_deps="avutil"
2540 avcodec_select="null_bsf"
2541 avdevice_deps="avformat avcodec avutil"
2542 avfilter_deps="avutil"
2543 avformat_deps="avcodec avutil"
2544 avformat_suggest="network"
2545 avresample_deps="avutil"
2546 swscale_deps="avutil"
2547
2548 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2549 avdevice_extralibs="libm_extralibs"
2550 avformat_extralibs="libm_extralibs"
2551 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2552 avresample_extralibs="libm_extralibs"
2553 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"
2554 swscale_extralibs="libm_extralibs"
2555
2556 # programs
2557 avconv_deps="avcodec avfilter avformat avresample swscale"
2558 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2559                fps_filter null_filter resample_filter scale_filter
2560                trim_filter"
2561 avconv_suggest="psapi shell32"
2562 avplay_deps="avcodec avfilter avformat avresample sdl"
2563 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2564 avplay_suggest="shell32"
2565 avprobe_deps="avcodec avformat"
2566 avprobe_suggest="shell32"
2567
2568 # documentation
2569 pod2man_deps="doc"
2570 texi2html_deps="doc"
2571
2572 # default parameters
2573
2574 logfile="avbuild/config.log"
2575
2576 # installation paths
2577 prefix_default="/usr/local"
2578 bindir_default='${prefix}/bin'
2579 datadir_default='${prefix}/share/avconv'
2580 docdir_default='${prefix}/share/doc/libav'
2581 incdir_default='${prefix}/include'
2582 libdir_default='${prefix}/lib'
2583 mandir_default='${prefix}/share/man'
2584 shlibdir_default="$libdir_default"
2585
2586 # toolchain
2587 ar_default="ar"
2588 cc_default="gcc"
2589 host_cc_default="gcc"
2590 x86asmexe_default="nasm"
2591 ln_s="ln -s -f"
2592 nm_default="nm -g"
2593 pkg_config_default=pkg-config
2594 ranlib="ranlib"
2595 strip="strip"
2596 version_script='--version-script'
2597 objformat="elf32"
2598
2599 # machine
2600 arch_default=$(uname -m)
2601 cpu="generic"
2602 intrinsics="none"
2603
2604 # OS
2605 target_os_default=$(tolower $(uname -s))
2606 host_os=$target_os_default
2607
2608 # configurable options
2609 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2610
2611 enable asm
2612 enable debug
2613 enable doc
2614 enable faan faandct faanidct
2615 enable optimizations
2616 enable safe_bitstream_reader
2617 enable static
2618 enable swscale_alpha
2619 enable valgrind_backtrace
2620
2621 # By default, enable only those hwaccels that have no external dependencies.
2622 enable d3d11va dxva2 vda vdpau
2623
2624 # internal components are enabled by default
2625 enable $EXTRALIBS_LIST
2626
2627 # Avoid external, non-system, libraries getting enabled by dependency resolution
2628 disable $EXTERNAL_LIBRARY_LIST
2629
2630 # build settings
2631 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2632 LIBPREF="lib"
2633 LIBSUF=".a"
2634 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2635 SLIBPREF="lib"
2636 SLIBSUF=".so"
2637 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2638 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2639 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2640 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2641 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2642 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2643 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2644
2645 asflags_filter=echo
2646 cflags_filter=echo
2647 ldflags_filter=echo
2648
2649 AS_C='-c'
2650 AS_O='-o $@'
2651 CC_C='-c'
2652 CC_E='-E -o $@'
2653 CC_O='-o $@'
2654 OBJCC_C='-c'
2655 OBJCC_E='-E -o $@'
2656 OBJCC_O='-o $@'
2657 X86ASM_O='-o $@'
2658 LD_O='-o $@'
2659 LD_LIB='-l%'
2660 LD_PATH='-L'
2661 HOSTCC_C='-c'
2662 HOSTCC_E='-E -o $@'
2663 HOSTCC_O='-o $@'
2664 HOSTLD_O='-o $@'
2665
2666 host_extralibs='-lm'
2667 host_cflags_filter=echo
2668 host_ldflags_filter=echo
2669
2670 target_path='$(CURDIR)'
2671
2672 # since the object filename is not given with the -MM flag, the compiler
2673 # is only able to print the basename, and we must add the path ourselves
2674 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2675 DEPFLAGS='-MM'
2676
2677 mkdir -p avbuild
2678
2679 # find source path
2680 if test -f configure; then
2681     source_path=.
2682 else
2683     source_path=$(cd $(dirname "$0"); pwd)
2684     echo "$source_path" | grep -q '[[:blank:]]' &&
2685         die "Out of tree builds are impossible with whitespace in source path."
2686     test -e "$source_path/config.h" &&
2687         die "Out of tree builds are impossible with config.h in source dir."
2688 fi
2689
2690 for v in "$@"; do
2691     r=${v#*=}
2692     l=${v%"$r"}
2693     r=$(sh_quote "$r")
2694     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2695 done
2696
2697 find_things(){
2698     thing=$1
2699     pattern=$2
2700     file=$source_path/$3
2701     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2702 }
2703
2704 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2705 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2706 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2707 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2708 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2709 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2710 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2711
2712 find_things_extern(){
2713     thing=$1
2714     pattern=$2
2715     file=$source_path/$3
2716     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2717 }
2718
2719 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2720 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2721 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2722
2723 AVCODEC_COMPONENTS_LIST="
2724     $BSF_LIST
2725     $DECODER_LIST
2726     $ENCODER_LIST
2727     $HWACCEL_LIST
2728     $PARSER_LIST
2729 "
2730
2731 AVDEVICE_COMPONENTS_LIST="
2732     $INDEV_LIST
2733 "
2734
2735 AVFILTER_COMPONENTS_LIST="
2736     $FILTER_LIST
2737 "
2738
2739 AVFORMAT_COMPONENTS_LIST="
2740     $DEMUXER_LIST
2741     $MUXER_LIST
2742     $PROTOCOL_LIST
2743 "
2744
2745 ALL_COMPONENTS="
2746     $AVCODEC_COMPONENTS_LIST
2747     $AVDEVICE_COMPONENTS_LIST
2748     $AVFILTER_COMPONENTS_LIST
2749     $AVFORMAT_COMPONENTS_LIST
2750 "
2751
2752 for n in $COMPONENT_LIST; do
2753     v=$(toupper ${n%s})_LIST
2754     eval enable \$$v
2755     eval ${n}_if_any="\$$v"
2756 done
2757
2758 enable $ARCH_EXT_LIST
2759
2760 die_unknown(){
2761     echo "Unknown option \"$1\"."
2762     echo "See $0 --help for available options."
2763     exit 1
2764 }
2765
2766 print_3_columns() {
2767     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2768 }
2769
2770 show_list() {
2771     suffix=_$1
2772     shift
2773     echo $* | sed s/$suffix//g | print_3_columns
2774     exit 0
2775 }
2776
2777 for opt do
2778     optval="${opt#*=}"
2779     case "$opt" in
2780         --extra-ldflags=*)
2781             add_ldflags $optval
2782         ;;
2783         --extra-ldexeflags=*)
2784             add_ldexeflags $optval
2785         ;;
2786         --extra-ldsoflags=*)
2787             add_ldsoflags $optval
2788         ;;
2789         --extra-libs=*)
2790             add_extralibs $optval
2791         ;;
2792         --disable-devices)
2793             disable $INDEV_LIST
2794         ;;
2795         --enable-debug=*)
2796             debuglevel="$optval"
2797         ;;
2798         --disable-programs)
2799             disable $PROGRAM_LIST
2800         ;;
2801         --disable-everything)
2802             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2803         ;;
2804         --disable-all)
2805             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2806             disable $LIBRARY_LIST $PROGRAM_LIST doc
2807         ;;
2808         --enable-*=*|--disable-*=*)
2809             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2810             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2811             eval list=\$$(toupper $thing)_LIST
2812             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2813             $action $(filter "$name" $list)
2814         ;;
2815         --enable-yasm|--disable-yasm)
2816             warn "The ${opt} option is only provided for compatibility and will be\n"\
2817                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2818             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2819         ;;
2820         --enable-?*|--disable-?*)
2821             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2822             if is_in $option $COMPONENT_LIST; then
2823                 test $action = disable && action=unset
2824                 eval $action \$$(toupper ${option%s})_LIST
2825             elif is_in $option $CMDLINE_SELECT; then
2826                 $action $option
2827             else
2828                 die_unknown $opt
2829             fi
2830         ;;
2831         --list-*)
2832             NAME="${opt#--list-}"
2833             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2834             NAME=${NAME%s}
2835             eval show_list $NAME \$$(toupper $NAME)_LIST
2836         ;;
2837         --help|-h) show_help
2838         ;;
2839         --quiet|-q) quiet=yes
2840         ;;
2841         *)
2842             optname="${opt%%=*}"
2843             optname="${optname#--}"
2844             optname=$(echo "$optname" | sed 's/-/_/g')
2845             if is_in $optname $CMDLINE_SET; then
2846                 eval $optname='$optval'
2847             elif is_in $optname $CMDLINE_APPEND; then
2848                 append $optname "$optval"
2849             else
2850                 die_unknown $opt
2851             fi
2852         ;;
2853     esac
2854 done
2855
2856 for e in $env; do
2857     eval "export $e"
2858 done
2859
2860 disabled logging && logfile=/dev/null
2861
2862 # command line configuration sanity checks
2863
2864 # we need to build at least one lib type
2865 if ! enabled_any static shared; then
2866     cat <<EOF
2867 At least one library type must be built.
2868 Specify --enable-static to build the static libraries or --enable-shared to
2869 build the shared libraries as well. To only build the shared libraries specify
2870 --disable-static in addition to --enable-shared.
2871 EOF
2872     exit 1
2873 fi
2874
2875 # Die early if licensing-related configure options are incompatible.
2876 die_license_disabled() {
2877     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2878 }
2879
2880 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2881 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2882 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2883
2884 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2885
2886 if enabled nonfree; then
2887     license="nonfree and unredistributable"
2888 elif enabled gplv3; then
2889     license="GPL version 3 or later"
2890 elif enabled lgplv3; then
2891     license="LGPL version 3 or later"
2892 elif enabled gpl; then
2893     license="GPL version 2 or later"
2894 else
2895     license="LGPL version 2.1 or later"
2896 fi
2897
2898 enabled_all gnutls openssl &&
2899     die "GnuTLS and OpenSSL must not be enabled at the same time."
2900
2901 # Disable all the library-specific components if the library itself
2902 # is disabled, see AVCODEC_LIST and following _LIST variables.
2903
2904 disable_components(){
2905     disabled ${1} && disable $(
2906         eval components="\$$(toupper ${1})_COMPONENTS"
2907         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2908     )
2909 }
2910
2911 map 'disable_components $v' $LIBRARY_LIST
2912
2913 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2914 set >> $logfile
2915
2916 case "$toolchain" in
2917     *-asan)
2918         cc_default="${toolchain%-asan}"
2919         add_cflags  -fsanitize=address
2920         add_ldflags -fsanitize=address
2921     ;;
2922     *-msan)
2923         cc_default="${toolchain%-msan}"
2924         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2925         add_ldflags -fsanitize=memory
2926     ;;
2927     *-tsan)
2928         cc_default="${toolchain%-tsan}"
2929         add_cflags  -fsanitize=thread -fPIE
2930         add_ldflags -fsanitize=thread -pie
2931         case "$toolchain" in
2932             gcc-tsan)
2933                 add_cflags  -fPIC
2934                 add_ldflags -fPIC
2935                 ;;
2936         esac
2937     ;;
2938     *-usan)
2939         cc_default="${toolchain%-usan}"
2940         add_cflags  -fsanitize=undefined
2941         add_ldflags -fsanitize=undefined
2942         case "$toolchain" in
2943             clang-usan)
2944                 add_cflags -O1
2945                 ;;
2946         esac
2947     ;;
2948     valgrind-*)
2949         target_exec_default="valgrind"
2950         case "$toolchain" in
2951             valgrind-massif)
2952                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2953                 ;;
2954             valgrind-memcheck)
2955                 target_exec_args="--track-origins=yes --leak-check=full"
2956                 ;;
2957         esac
2958     ;;
2959     msvc)
2960         # Check whether the current MSVC version needs the C99 converter.
2961         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2962         # support enough of C99 to build libav. Default to the new
2963         # behaviour if the regexp was unable to match anything, since this
2964         # successfully parses the version number of existing supported
2965         # versions that require the converter (MSVC 2010 and 2012).
2966         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2967         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2968             cc_default="cl"
2969         else
2970             cc_default="c99wrap cl"
2971         fi
2972         ld_default="$source_path/compat/windows/mslink"
2973         nm_default="dumpbin -symbols"
2974         ar_default="lib"
2975         case "$arch" in
2976         aarch64|arm64)
2977             as_default="armasm64"
2978             ;;
2979         arm*)
2980             as_default="armasm"
2981             ;;
2982         esac
2983         target_os_default="win32"
2984         # Use a relative path for TMPDIR. This makes sure all the
2985         # ffconf temp files are written with a relative path, avoiding
2986         # issues with msys/win32 path conversion for MSVC parameters
2987         # such as -Fo<file> or -out:<file>.
2988         TMPDIR=.
2989     ;;
2990     icl)
2991         cc_default="icl"
2992         ld_default="xilink"
2993         nm_default="dumpbin -symbols"
2994         ar_default="xilib"
2995         target_os_default="win32"
2996         TMPDIR=.
2997     ;;
2998     gcov)
2999         add_cflags  -fprofile-arcs -ftest-coverage
3000         add_ldflags -fprofile-arcs -ftest-coverage
3001     ;;
3002     llvm-cov)
3003         add_cflags -fprofile-arcs -ftest-coverage
3004         add_ldflags --coverage
3005     ;;
3006     hardened)
3007         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3008         add_cflags   -fno-strict-overflow -fstack-protector-all
3009         add_ldflags  -Wl,-z,relro -Wl,-z,now
3010     ;;
3011     ?*)
3012         die "Unknown toolchain $toolchain"
3013     ;;
3014 esac
3015
3016 if test -n "$cross_prefix"; then
3017     test -n "$arch" && test -n "$target_os" ||
3018         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3019     enable cross_compile
3020 fi
3021
3022 ar_default="${cross_prefix}${ar_default}"
3023 cc_default="${cross_prefix}${cc_default}"
3024 objcc_default="${cross_prefix}${objcc_default}"
3025 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3026 nm_default="${cross_prefix}${nm_default}"
3027 pkg_config_default="${cross_prefix}${pkg_config_default}"
3028 ranlib="${cross_prefix}${ranlib}"
3029 strip="${cross_prefix}${strip}"
3030
3031 sysinclude_default="${sysroot}/usr/include"
3032
3033 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3034 enabled cross_compile || host_cc_default=$cc
3035 set_default host_cc
3036
3037 if ! $pkg_config --version >/dev/null 2>&1; then
3038     warn "$pkg_config not found, library detection may fail."
3039     pkg_config=false
3040 fi
3041
3042 exesuf() {
3043     case $1 in
3044         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3045     esac
3046 }
3047
3048 EXESUF=$(exesuf $target_os)
3049 HOSTEXESUF=$(exesuf $host_os)
3050
3051 # set temporary file name
3052 : ${TMPDIR:=$TEMPDIR}
3053 : ${TMPDIR:=$TMP}
3054 : ${TMPDIR:=/tmp}
3055
3056 if ! test_cmd mktemp -u XXXXXX; then
3057     # simple replacement for missing mktemp
3058     # NOT SAFE FOR GENERAL USE
3059     mktemp(){
3060         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3061         echo "$tmpname"
3062         mkdir "$tmpname"
3063     }
3064 fi
3065
3066 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3067     die "Unable to create temporary directory in $TMPDIR."
3068
3069 tmpfile(){
3070     tmp="${AVTMPDIR}/test"$2
3071     (set -C; exec > $tmp) 2> /dev/null ||
3072         die "Unable to create temporary file in $AVTMPDIR."
3073     eval $1=$tmp
3074 }
3075
3076 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3077 trap 'exit 2' INT
3078
3079 tmpfile TMPASM .asm
3080 tmpfile TMPC   .c
3081 tmpfile TMPE   $EXESUF
3082 tmpfile TMPH   .h
3083 tmpfile TMPO   .o
3084 tmpfile TMPS   .S
3085 tmpfile TMPSH  .sh
3086 tmpfile TMPV   .ver
3087
3088 unset -f mktemp
3089
3090 chmod +x $TMPE
3091
3092 # make sure we can execute files in $TMPDIR
3093 cat > $TMPSH 2>> $logfile <<EOF
3094 #! /bin/sh
3095 EOF
3096 chmod +x $TMPSH >> $logfile 2>&1
3097 if ! $TMPSH >> $logfile 2>&1; then
3098     cat <<EOF
3099 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3100 variable to another directory and make sure that it is not mounted noexec.
3101 EOF
3102     die "Sanity test failed."
3103 fi
3104
3105 armasm_flags(){
3106     for flag; do
3107         case $flag in
3108             # Filter out MSVC cl.exe options from cflags that shouldn't
3109             # be passed to gas-preprocessor
3110             -M[TD]*)                                            ;;
3111             *)                  echo $flag                      ;;
3112         esac
3113    done
3114 }
3115
3116 cparser_flags(){
3117     for flag; do
3118         case $flag in
3119             -Wno-switch)             echo -Wno-switch-enum ;;
3120             -Wno-format-zero-length) ;;
3121             -Wdisabled-optimization) ;;
3122             -Wno-pointer-sign)       echo -Wno-other ;;
3123             *)                       echo $flag ;;
3124         esac
3125     done
3126 }
3127
3128 msvc_common_flags(){
3129     for flag; do
3130         case $flag in
3131             # In addition to specifying certain flags under the compiler
3132             # specific filters, they must be specified here as well or else the
3133             # generic catch all at the bottom will print the original flag.
3134             -Wall)                ;;
3135             -Wextra)              ;;
3136             -std=c99)             ;;
3137             # Common flags
3138             -fomit-frame-pointer) ;;
3139             -g)                   echo -Z7 ;;
3140             -fno-math-errno)      ;;
3141             -fno-common)          ;;
3142             -fno-signed-zeros)    ;;
3143             -fPIC)                ;;
3144             -mthumb)              ;;
3145             -march=*)             ;;
3146             -lz)                  echo zlib.lib ;;
3147             -lx264)               echo libx264.lib ;;
3148             -l*)                  echo ${flag#-l}.lib ;;
3149             -L*)                  echo -libpath:${flag#-L} ;;
3150             *)                    echo $flag ;;
3151         esac
3152     done
3153 }
3154
3155 msvc_flags(){
3156     msvc_common_flags "$@"
3157     for flag; do
3158         case $flag in
3159             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3160                                        -wd4554 ;;
3161             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3162                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3163                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3164                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3165         esac
3166     done
3167 }
3168
3169 icl_flags(){
3170     msvc_common_flags "$@"
3171     for flag; do
3172         case $flag in
3173             # Despite what Intel's documentation says -Wall, which is supported
3174             # on Windows, does enable remarks so disable them here.
3175             -Wall)                echo $flag -Qdiag-disable:remark ;;
3176             -std=c99)             echo -Qstd=c99 ;;
3177         esac
3178     done
3179 }
3180
3181 suncc_flags(){
3182     for flag; do
3183         case $flag in
3184             -march=*|-mcpu=*)
3185                 case "${flag#*=}" in
3186                     native)                   echo -xtarget=native       ;;
3187                     v9|niagara)               echo -xarch=sparc          ;;
3188                     ultrasparc)               echo -xarch=sparcvis       ;;
3189                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3190                     i586|pentium)             echo -xchip=pentium        ;;
3191                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3192                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3193                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3194                     pentium4*)          echo -xtarget=pentium4           ;;
3195                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3196                     *-sse3)             echo -xarch=sse3                 ;;
3197                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3198                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3199                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3200                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3201                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3202                     k8|opteron|athlon64|athlon-fx)
3203                                                echo -xarch=sse2a         ;;
3204                     athlon*)                   echo -xarch=pentium_proa  ;;
3205                 esac
3206                 ;;
3207             -std=c99)             echo -xc99              ;;
3208             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3209             -fPIC)                echo -KPIC -xcode=pic32 ;;
3210             -W*,*)                echo $flag              ;;
3211             -f*-*|-W*|-mimpure-text)                      ;;
3212             -shared)              echo -G                 ;;
3213             *)                    echo $flag              ;;
3214         esac
3215     done
3216 }
3217
3218 probe_cc(){
3219     pfx=$1
3220     _cc=$2
3221
3222     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3223     unset _ld_o _ldflags _ld_lib _ld_path
3224     unset _depflags _DEPCMD _DEPFLAGS
3225     _flags_filter=echo
3226
3227     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3228         _type=llvm_gcc
3229         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3230         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3231         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3232         _cflags_speed='-O3'
3233         _cflags_size='-Os'
3234     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3235         _type=gcc
3236         gcc_version=$($_cc --version | head -n1)
3237         gcc_basever=$($_cc -dumpversion)
3238         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3239         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3240         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3241         if ! $_cc -dumpversion | grep -q '^2\.'; then
3242             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3243         fi
3244         _cflags_speed='-O3'
3245         _cflags_size='-Os'
3246     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3247         _type=icc
3248         _ident=$($_cc --version | head -n1)
3249         _depflags='-MMD'
3250         _cflags_speed='-O3'
3251         _cflags_size='-Os'
3252         _cflags_noopt='-O1'
3253     elif $_cc -v 2>&1 | grep -q xlc; then
3254         _type=xlc
3255         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3256         _cflags_speed='-O5'
3257         _cflags_size='-O5 -qcompact'
3258     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3259         test -d "$sysroot" || die "No valid sysroot specified."
3260         _type=armcc
3261         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3262         armcc_conf="$PWD/armcc.conf"
3263         $_cc --arm_linux_configure                 \
3264              --arm_linux_config_file="$armcc_conf" \
3265              --configure_sysroot="$sysroot"        \
3266              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3267              die "Error creating armcc configuration file."
3268         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3269         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3270         as_default="${cross_prefix}gcc"
3271         _depflags='-MMD'
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274     elif $_cc -v 2>&1 | grep -q clang; then
3275         _type=clang
3276         _ident=$($_cc --version 2>/dev/null | head -n1)
3277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3278         _cflags_speed='-O3'
3279         _cflags_size='-Os'
3280     elif $_cc -V 2>&1 | grep -q Sun; then
3281         _type=suncc
3282         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3283         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3284         _DEPFLAGS='-xM1 -xc99'
3285         _ldflags='-std=c99'
3286         _cflags_speed='-O5'
3287         _cflags_size='-O5 -xspace'
3288         _flags_filter=suncc_flags
3289     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3290         _type=pathscale
3291         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3292         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3293         _cflags_speed='-O2'
3294         _cflags_size='-Os'
3295         _flags_filter='filter_out -Wdisabled-optimization'
3296     elif $_cc -v 2>&1 | grep -q Open64; then
3297         _type=open64
3298         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3300         _cflags_speed='-O2'
3301         _cflags_size='-Os'
3302         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3303     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3304         _type=armasm
3305         _ident=$($_cc | head -n1)
3306         # 4509: "This form of conditional instruction is deprecated"
3307         _flags="-nologo -ignore 4509"
3308         _flags_filter=armasm_flags
3309     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3310         _type=msvc
3311         _ident=$($_cc 2>&1 | head -n1)
3312         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3313         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3314         _cflags_speed="-O2"
3315         _cflags_size="-O1"
3316         _cflags_noopt="-O1"
3317         if $_cc -nologo- 2>&1 | grep -q Linker; then
3318             _ld_o='-out:$@'
3319         else
3320             _ld_o='-Fe$@'
3321         fi
3322         _cc_o='-Fo$@'
3323         _cc_e='-P -Fi$@'
3324         _flags_filter=msvc_flags
3325         _ld_lib='lib%.a'
3326         _ld_path='-libpath:'
3327         _flags='-nologo'
3328     elif $_cc 2>&1 | grep -q Intel; then
3329         _type=icl
3330         _ident=$($_cc 2>&1 | head -n1)
3331         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3332         # Not only is O3 broken on 13.x+ but it is slower on all previous
3333         # versions (tested) as well.
3334         _cflags_speed="-O2"
3335         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3336         if $_cc 2>&1 | grep -q Linker; then
3337             _ld_o='-out:$@'
3338         else
3339             _ld_o='-Fe$@'
3340         fi
3341         _cc_o='-Fo$@'
3342         _cc_e='-P'
3343         _flags_filter=icl_flags
3344         _ld_lib='lib%.a'
3345         _ld_path='-libpath:'
3346         # -Qdiag-error to make icl error when seeing certain unknown arguments
3347         _flags='-nologo -Qdiag-error:4044,10157'
3348         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3349         # with MSVC which enables it by default.
3350         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3351     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3352         # lld can emulate multiple different linkers; in ms link.exe mode,
3353         # the -? parameter gives the help output which contains an identifyable
3354         # string, while it gives an error in other modes.
3355         _type=lld-link
3356         # The link.exe mode doesn't have a switch for getting the version,
3357         # but we can force it back to gnu mode and get the version from there.
3358         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3359         _ld_o='-out:$@'
3360         _flags_filter=msvc_flags
3361         _ld_lib='lib%.a'
3362         _ld_path='-libpath:'
3363     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3364         _type=cparser
3365         _ident=$($_cc --version | head -n1)
3366         _depflags='-MMD'
3367         _cflags_speed='-O4'
3368         _cflags_size='-O2'
3369         _flags_filter=cparser_flags
3370     fi
3371
3372     eval ${pfx}_type=\$_type
3373     eval ${pfx}_ident=\$_ident
3374 }
3375
3376 set_ccvars(){
3377     eval ${1}_C=\${_cc_c-\${${1}_C}}
3378     eval ${1}_E=\${_cc_e-\${${1}_E}}
3379     eval ${1}_O=\${_cc_o-\${${1}_O}}
3380
3381     if [ -n "$_depflags" ]; then
3382         eval ${1}_DEPFLAGS=\$_depflags
3383     else
3384         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3385         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3386         eval DEP${1}FLAGS=\$_flags
3387     fi
3388 }
3389
3390 probe_cc cc "$cc"
3391 cflags_filter=$_flags_filter
3392 cflags_speed=$_cflags_speed
3393 cflags_size=$_cflags_size
3394 cflags_noopt=$_cflags_noopt
3395 add_cflags $_flags $_cflags
3396 cc_ldflags=$_ldflags
3397 set_ccvars CC
3398
3399 probe_cc hostcc "$host_cc"
3400 host_cflags_filter=$_flags_filter
3401 host_cflags_speed=$_cflags_speed
3402 add_host_cflags  $_flags $_cflags
3403 set_ccvars HOSTCC
3404
3405 test -n "$cc_type" && enable $cc_type ||
3406     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3407
3408 : ${as_default:=$cc}
3409 : ${objcc_default:=$cc}
3410 : ${dep_cc_default:=$cc}
3411 : ${ld_default:=$cc}
3412 : ${host_ld_default:=$host_cc}
3413 set_default ar as objcc dep_cc ld host_ld
3414
3415 probe_cc as "$as"
3416 asflags_filter=$_flags_filter
3417 add_asflags $_flags $_cflags
3418 set_ccvars AS
3419
3420 probe_cc objcc "$objcc"
3421 objcflags_filter=$_flags_filter
3422 add_objcflags $_flags $_cflags
3423 set_ccvars OBJC
3424
3425 probe_cc ld "$ld"
3426 ldflags_filter=$_flags_filter
3427 add_ldflags $_flags $_ldflags
3428 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3429 LD_O=${_ld_o-$LD_O}
3430 LD_LIB=${_ld_lib-$LD_LIB}
3431 LD_PATH=${_ld_path-$LD_PATH}
3432
3433 probe_cc hostld "$host_ld"
3434 host_ldflags_filter=$_flags_filter
3435 add_host_ldflags $_flags $_ldflags
3436 HOSTLD_O=${_ld_o-$HOSTLD_O}
3437
3438 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3439     probe_cc depcc "$dep_cc"
3440     CCDEP=${_DEPCMD:-$DEPCMD}
3441     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3442     DEPCCFLAGS=$_flags
3443 fi
3444
3445 if $ar 2>&1 | grep -q Microsoft; then
3446     arflags="-nologo"
3447     ar_o='-out:$@'
3448 else
3449     arflags="rc"
3450     ar_o='$@'
3451 fi
3452
3453 add_cflags $extra_cflags
3454 add_objcflags $extra_objcflags
3455 add_asflags $extra_cflags
3456
3457 if test -n "$sysroot"; then
3458     case "$cc_type" in
3459         gcc|llvm_gcc|clang)
3460             add_cppflags --sysroot="$sysroot"
3461             add_ldflags --sysroot="$sysroot"
3462         ;;
3463     esac
3464 fi
3465
3466 if test "$cpu" = host; then
3467     enabled cross_compile &&
3468         die "--cpu=host makes no sense when cross-compiling."
3469
3470     case "$cc_type" in
3471         gcc|llvm_gcc)
3472             check_native(){
3473                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3474                 sed -n "/cc1.*$1=/{
3475                             s/.*$1=\\([^ ]*\\).*/\\1/
3476                             p
3477                             q
3478                         }" $TMPE
3479             }
3480             cpu=$(check_native -march || check_native -mcpu)
3481         ;;
3482     esac
3483
3484     test "${cpu:-host}" = host &&
3485         die "--cpu=host not supported with compiler $cc"
3486 fi
3487
3488 # Deal with common $arch aliases
3489 case "$arch" in
3490     aarch64|arm64)
3491         arch="aarch64"
3492     ;;
3493     arm*)
3494         arch="arm"
3495     ;;
3496     mips*|IP*)
3497         case "$arch" in
3498         *el)
3499             add_cppflags -EL
3500             add_ldflags -EL
3501         ;;
3502         *eb)
3503             add_cppflags -EB
3504             add_ldflags -EB
3505         ;;
3506         esac
3507         arch="mips"
3508     ;;
3509     parisc*|hppa*)
3510         arch="parisc"
3511     ;;
3512     "Power Macintosh"|ppc*|powerpc*)
3513         arch="ppc"
3514     ;;
3515     s390|s390x)
3516         arch="s390"
3517     ;;
3518     sh4|sh)
3519         arch="sh4"
3520     ;;
3521     sun4u|sparc*)
3522         arch="sparc"
3523     ;;
3524     tilegx|tile-gx)
3525         arch="tilegx"
3526     ;;
3527     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3528         arch="x86"
3529     ;;
3530 esac
3531
3532 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3533 enable $arch
3534
3535 # Add processor-specific flags
3536 if enabled aarch64; then
3537
3538     case $cpu in
3539         armv*)
3540             cpuflags="-march=$cpu"
3541         ;;
3542         *)
3543             cpuflags="-mcpu=$cpu"
3544         ;;
3545     esac
3546
3547 elif enabled alpha; then
3548
3549     cpuflags="-mcpu=$cpu"
3550
3551 elif enabled arm; then
3552
3553     check_arm_arch() {
3554         test_cpp_condition stddef.h \
3555             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3556             $cpuflags
3557     }
3558
3559     probe_arm_arch() {
3560         if   check_arm_arch 4;        then echo armv4
3561         elif check_arm_arch 4T;       then echo armv4t
3562         elif check_arm_arch 5;        then echo armv5
3563         elif check_arm_arch 5E;       then echo armv5e
3564         elif check_arm_arch 5T;       then echo armv5t
3565         elif check_arm_arch 5TE;      then echo armv5te
3566         elif check_arm_arch 5TEJ;     then echo armv5te
3567         elif check_arm_arch 6;        then echo armv6
3568         elif check_arm_arch 6J;       then echo armv6j
3569         elif check_arm_arch 6K;       then echo armv6k
3570         elif check_arm_arch 6Z;       then echo armv6z
3571         elif check_arm_arch 6ZK;      then echo armv6zk
3572         elif check_arm_arch 6T2;      then echo armv6t2
3573         elif check_arm_arch 7;        then echo armv7
3574         elif check_arm_arch 7A  7_A;  then echo armv7-a
3575         elif check_arm_arch 7S;       then echo armv7-a
3576         elif check_arm_arch 7R  7_R;  then echo armv7-r
3577         elif check_arm_arch 7M  7_M;  then echo armv7-m
3578         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3579         elif check_arm_arch 8A  8_A;  then echo armv8-a
3580         fi
3581     }
3582
3583     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3584
3585     case $cpu in
3586         armv*)
3587             cpuflags="-march=$cpu"
3588             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3589         ;;
3590         *)
3591             cpuflags="-mcpu=$cpu"
3592             case $cpu in
3593                 cortex-a*)                               subarch=armv7a  ;;
3594                 cortex-r*)                               subarch=armv7r  ;;
3595                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3596                 arm11*)                                  subarch=armv6   ;;
3597                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3598                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3599                 *)                             subarch=$(probe_arm_arch) ;;
3600             esac
3601         ;;
3602     esac
3603
3604     case "$subarch" in
3605         armv5t*)    enable fast_clz                ;;
3606         armv[6-8]*) enable fast_clz fast_unaligned ;;
3607     esac
3608
3609 elif enabled avr32; then
3610
3611     case $cpu in
3612         ap7[02]0[0-2])
3613             subarch="avr32_ap"
3614             cpuflags="-mpart=$cpu"
3615         ;;
3616         ap)
3617             subarch="avr32_ap"
3618             cpuflags="-march=$cpu"
3619         ;;
3620         uc3[ab]*)
3621             subarch="avr32_uc"
3622             cpuflags="-mcpu=$cpu"
3623         ;;
3624         uc)
3625             subarch="avr32_uc"
3626             cpuflags="-march=$cpu"
3627         ;;
3628     esac
3629
3630 elif enabled bfin; then
3631
3632     cpuflags="-mcpu=$cpu"
3633
3634 elif enabled mips; then
3635
3636     cpuflags="-march=$cpu"
3637
3638 elif enabled ppc; then
3639
3640     disable ldbrx
3641
3642     case $(tolower $cpu) in
3643         601|ppc601|powerpc601)
3644             cpuflags="-mcpu=601"
3645             disable altivec
3646         ;;
3647         603*|ppc603*|powerpc603*)
3648             cpuflags="-mcpu=603"
3649             disable altivec
3650         ;;
3651         604*|ppc604*|powerpc604*)
3652             cpuflags="-mcpu=604"
3653             disable altivec
3654         ;;
3655         g3|75*|ppc75*|powerpc75*)
3656             cpuflags="-mcpu=750"
3657             disable altivec
3658         ;;
3659         g4|745*|ppc745*|powerpc745*)
3660             cpuflags="-mcpu=7450"
3661             disable vsx
3662         ;;
3663         74*|ppc74*|powerpc74*)
3664             cpuflags="-mcpu=7400"
3665             disable vsx
3666         ;;
3667         g5|970|ppc970|powerpc970)
3668             cpuflags="-mcpu=970"
3669             disable vsx
3670         ;;
3671         power[3-6]*)
3672             cpuflags="-mcpu=$cpu"
3673             disable vsx
3674         ;;
3675         power[7-8]*)
3676             cpuflags="-mcpu=$cpu"
3677             enable ldbrx
3678         ;;
3679         cell)
3680             cpuflags="-mcpu=cell"
3681             enable ldbrx
3682             disable vsx
3683         ;;
3684         e500mc)
3685             cpuflags="-mcpu=e500mc"
3686             disable altivec
3687         ;;
3688         e500v2)
3689             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3690             disable altivec
3691             disable dcbzl
3692         ;;
3693         e500)
3694             cpuflags="-mcpu=8540 -mhard-float"
3695             disable altivec
3696             disable dcbzl
3697         ;;
3698     esac
3699
3700 elif enabled sparc; then
3701
3702     case $cpu in
3703         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3704             cpuflags="-mcpu=$cpu"
3705         ;;
3706         ultrasparc*|niagara[234])
3707             cpuflags="-mcpu=$cpu"
3708         ;;
3709     esac
3710
3711 elif enabled x86; then
3712
3713     case $cpu in
3714         i[345]86|pentium)
3715             cpuflags="-march=$cpu"
3716             disable i686
3717             disable mmx
3718         ;;
3719         # targets that do NOT support nopl and conditional mov (cmov)
3720         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3721             cpuflags="-march=$cpu"
3722             disable i686
3723         ;;
3724         # targets that do support nopl and conditional mov (cmov)
3725         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3726             cpuflags="-march=$cpu"
3727             enable i686
3728             enable fast_cmov
3729         ;;
3730         # targets that do support conditional mov but on which it's slow
3731         pentium4|pentium4m|prescott|nocona)
3732             cpuflags="-march=$cpu"
3733             enable i686
3734             disable fast_cmov
3735         ;;
3736     esac
3737
3738 fi
3739
3740 if [ "$cpu" != generic ]; then
3741     add_cflags  $cpuflags
3742     add_asflags $cpuflags
3743     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3744 fi
3745
3746 # compiler sanity check
3747 test_exec <<EOF
3748 int main(void){ return 0; }
3749 EOF
3750 if test "$?" != 0; then
3751     echo "$cc is unable to create an executable file."
3752     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3753         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3754         echo "Only do this if you know what cross compiling means."
3755     fi
3756     die "C compiler test failed."
3757 fi
3758
3759 add_cppflags -D_ISOC99_SOURCE
3760
3761 # some compilers silently accept -std=c11, so we also need to check that the
3762 # version macro is defined properly
3763 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3764     add_cflags -std=c11 ||
3765     check_cflags -std=c99
3766
3767 check_cppflags -D_FILE_OFFSET_BITS=64
3768 check_cppflags -D_LARGEFILE_SOURCE
3769
3770 add_host_cppflags -D_ISOC99_SOURCE
3771 check_host_cflags -std=c99
3772 check_host_cflags -Wall
3773 check_host_cflags $host_cflags_speed
3774
3775 check_64bit(){
3776     arch32=$1
3777     arch64=$2
3778     expr=${3:-'sizeof(void *) > 4'}
3779     test_code cc "" "int test[2*($expr) - 1]" &&
3780         subarch=$arch64 || subarch=$arch32
3781     enable $subarch
3782 }
3783
3784 case "$arch" in
3785     aarch64|alpha|ia64)
3786         enabled shared && enable_weak pic
3787     ;;
3788     mips)
3789         check_64bit mips mips64 '_MIPS_SIM > 1'
3790         enabled shared && enable_weak pic
3791     ;;
3792     parisc)
3793         check_64bit parisc parisc64
3794         enabled shared && enable_weak pic
3795     ;;
3796     ppc)
3797         check_64bit ppc ppc64
3798         enabled shared && enable_weak pic
3799     ;;
3800     s390)
3801         check_64bit s390 s390x
3802         enabled shared && enable_weak pic
3803     ;;
3804     sparc)
3805         check_64bit sparc sparc64
3806         enabled shared && enable_weak pic
3807     ;;
3808     x86)
3809         check_64bit x86_32 x86_64
3810         if enabled x86_64; then
3811             enabled shared && enable_weak pic
3812             objformat=elf64
3813         fi
3814     ;;
3815 esac
3816
3817 # OS specific
3818 case $target_os in
3819     aix)
3820         SHFLAGS=-shared
3821         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3822         enabled shared && add_ldflags -Wl,-brtl
3823         arflags='-Xany -r -c'
3824         ;;
3825     android)
3826         disable symver
3827         enable section_data_rel_ro
3828         SLIB_INSTALL_NAME='$(SLIBNAME)'
3829         SLIB_INSTALL_LINKS=
3830         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3831         ;;
3832     haiku)
3833         prefix_default="/boot/common"
3834         network_extralibs="-lnetwork"
3835         host_extralibs=
3836         ;;
3837     sunos)
3838         SHFLAGS='-shared -Wl,-h,$$(@F)'
3839         enabled x86 && append SHFLAGS -mimpure-text
3840         network_extralibs="-lsocket -lnsl"
3841         # When using suncc to build, the Solaris linker will mark
3842         # an executable with each instruction set encountered by
3843         # the Solaris assembler.  As our libraries contain their own
3844         # guards for processor-specific code, instead suppress
3845         # generation of the HWCAPS ELF section on Solaris x86 only.
3846         enabled_all suncc x86 &&
3847             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3848             add_ldflags -Wl,-M,mapfile
3849         nm_default='nm -P -g'
3850         version_script='-M'
3851         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3852         ;;
3853     netbsd)
3854         disable symver
3855         oss_indev_extralibs="-lossaudio"
3856         ;;
3857     openbsd|bitrig)
3858         disable symver
3859         SHFLAGS='-shared'
3860         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3861         SLIB_INSTALL_LINKS=
3862         oss_indev_extralibs="-lossaudio"
3863         ;;
3864     dragonfly)
3865         disable symver
3866         ;;
3867     freebsd)
3868         ;;
3869     bsd/os)
3870         add_extralibs -lpoll -lgnugetopt
3871         ;;
3872     darwin)
3873         enabled ppc && add_asflags -force_cpusubtype_ALL
3874         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3875         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3876         add_ldflags -Wl,-dynamic,-search_paths_first
3877         check_cflags -Werror=partial-availability
3878         SLIBSUF=".dylib"
3879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3881         enabled x86_64 && objformat="macho64" || objformat="macho32"
3882         enabled_any pic shared ||
3883             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3884         check_header dispatch/dispatch.h &&
3885             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3886         if test -n "$sysroot"; then
3887             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3888             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3889         fi
3890         ;;
3891     msys*)
3892         die "Native MSYS builds are discouraged, please use the MINGW environment."
3893         ;;
3894     mingw32*|mingw64*)
3895         target_os=mingw32
3896         LIBTARGET=i386
3897         if enabled x86_64; then
3898             LIBTARGET="i386:x86-64"
3899         elif enabled arm; then
3900             LIBTARGET="arm"
3901         elif enabled aarch64; then
3902             LIBTARGET="arm64"
3903         fi
3904         if enabled shared; then
3905             # Cannot build both shared and static libs when using dllimport.
3906             disable static
3907         fi
3908         check_ldflags -Wl,--nxcompat
3909         check_ldflags -Wl,--dynamicbase
3910         shlibdir_default="$bindir_default"
3911         SLIBPREF=""
3912         SLIBSUF=".dll"
3913         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3914         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3915         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3916         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3917         SLIB_INSTALL_LINKS=
3918         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3919         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3920         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3921         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3922         enabled x86_64 && objformat="win64" || objformat="win32"
3923         dlltool="${cross_prefix}dlltool"
3924         ranlib=:
3925         enable dos_paths
3926         ;;
3927     win32|win64)
3928         disable symver
3929         if enabled shared; then
3930             # Link to the import library instead of the normal static library
3931             # for shared libs.
3932             LD_LIB='%.lib'
3933             # Cannot build both shared and static libs with MSVC or icl.
3934             disable static
3935         fi
3936         shlibdir_default="$bindir_default"
3937         SLIBPREF=""
3938         SLIBSUF=".dll"
3939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3941         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3942         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3943         SLIB_INSTALL_LINKS=
3944         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3945         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3946         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3947         enabled x86_64 && objformat="win64" || objformat="win32"
3948         ranlib=:
3949         enable dos_paths
3950         ;;
3951     cygwin*)
3952         target_os=cygwin
3953         shlibdir_default="$bindir_default"
3954         SLIBPREF="cyg"
3955         SLIBSUF=".dll"
3956         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3957         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3958         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3959         SLIB_INSTALL_LINKS=
3960         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3961         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3962         enabled x86_64 && objformat="win64" || objformat="win32"
3963         enable dos_paths
3964         ;;
3965     *-dos|freedos|opendos)
3966         network_extralibs="-lsocket"
3967         objformat="coff"
3968         enable dos_paths
3969         add_cppflags -U__STRICT_ANSI__
3970         ;;
3971     linux)
3972         enable section_data_rel_ro
3973         ;;
3974     irix*)
3975         target_os=irix
3976         ranlib="echo ignoring ranlib"
3977         ;;
3978     os/2*)
3979         ln_s="cp -f"
3980         objformat="aout"
3981         add_cppflags -D_GNU_SOURCE
3982         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
3983         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3984         LIBSUF="_s.a"
3985         SLIBPREF=""
3986         SLIBSUF=".dll"
3987         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3988         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3989         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3990             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3991             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3992             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3993             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3994         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3995             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3996         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3997         enable dos_paths
3998         ;;
3999     gnu/kfreebsd)
4000         add_cppflags -D_BSD_SOURCE
4001         ;;
4002     gnu)
4003         ;;
4004     qnx)
4005         add_cppflags -D_QNX_SOURCE
4006         network_extralibs="-lsocket"
4007         ;;
4008     symbian)
4009         SLIBSUF=".dll"
4010         enable dos_paths
4011         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4012         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4013         add_ldflags -Wl,--target1-abs,--no-undefined \
4014                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4015                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4016         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4017                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4018                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4019         ;;
4020     minix)
4021         ;;
4022     none)
4023         ;;
4024     *)
4025         die "Unknown OS '$target_os'."
4026         ;;
4027 esac
4028
4029 # determine libc flavour
4030
4031 probe_libc(){
4032     pfx=$1
4033     pfx_no_=${pfx%_}
4034     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4035     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4036         eval ${pfx}libc_type=uclibc
4037         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4038     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4039         eval ${pfx}libc_type=glibc
4040         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4041     # MinGW headers can be installed on Cygwin, so check for newlib first.
4042     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4043         eval ${pfx}libc_type=newlib
4044         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4045     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4046     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4047         eval ${pfx}libc_type=mingw64
4048         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4049         eval test \$${pfx_no_}cc_type = "gcc" &&
4050             add_${pfx}cppflags -D__printf__=__gnu_printf__
4051     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4052          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4053         eval ${pfx}libc_type=mingw32
4054         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4055             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4056             die "ERROR: MinGW32 runtime version must be >= 3.15."
4057         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4058         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4059             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4060         test_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4061             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4062         eval test \$${pfx_no_}cc_type = "gcc" &&
4063             add_${pfx}cppflags -D__printf__=__gnu_printf__
4064     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4065         eval ${pfx}libc_type=msvcrt
4066         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4067             if [ "$pfx" = host_ ]; then
4068                 add_host_cppflags -Dsnprintf=_snprintf
4069             else
4070                 add_compat strtod.o strtod=avpriv_strtod
4071                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4072                                              _snprintf=avpriv_snprintf  \
4073                                              vsnprintf=avpriv_vsnprintf
4074             fi
4075         fi
4076         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4077         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4078         # 0x601 by default unless something else is set by the user.
4079         # This can easily lead to us detecting functions only present
4080         # in such new versions and producing binaries requiring windows 7.0.
4081         # Therefore explicitly set the default to XP unless the user has
4082         # set something else on the command line.
4083         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4084         # family. For these cases, configure is free to use any functions
4085         # found in the SDK headers by default. (Alternatively, we could force
4086         # _WIN32_WINNT to 0x0602 in that case.)
4087         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4088             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4089 #ifdef WINAPI_FAMILY
4090 #include <winapifamily.h>
4091 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4092 #error not desktop
4093 #endif
4094 #endif
4095 EOF
4096         if [ "$pfx" = "" ]; then
4097             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4098         fi
4099     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4100         eval ${pfx}libc_type=klibc
4101     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4102         eval ${pfx}libc_type=bionic
4103     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4104         eval ${pfx}libc_type=solaris
4105         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4106     else
4107         eval ${pfx}libc_type=default
4108         add_${pfx}cppflags -D_DEFAULT_SOURCE
4109     fi
4110     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4111 }
4112
4113 probe_libc
4114 probe_libc host_
4115
4116 # hacks for compiler/libc/os combinations
4117
4118 case $libc_type in
4119     bionic)
4120         add_compat strtod.o strtod=avpriv_strtod
4121         ;;
4122 esac
4123
4124 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4125     add_cppflags '-I\$(SRC_PATH)/compat/float'
4126
4127 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4128
4129 set_default $PATHS_LIST
4130 set_default nm
4131
4132 disabled optimizations || check_cflags -fomit-frame-pointer
4133
4134 enable_weak_pic() {
4135     disabled pic && return
4136     enable pic
4137     add_cppflags -DPIC
4138     case "$target_os" in
4139     mingw*|cygwin*|win*)
4140         ;;
4141     *)
4142         add_cflags -fPIC
4143         add_asflags -fPIC
4144         ;;
4145     esac
4146 }
4147
4148 enabled pic && enable_weak_pic
4149
4150 test_cc <<EOF || die "Symbol mangling check failed."
4151 int ff_extern;
4152 EOF
4153 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4154 extern_prefix=${sym%%ff_extern*}
4155
4156 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4157
4158 for restrict_keyword in restrict __restrict__ __restrict ""; do
4159     test_cc <<EOF && break
4160 void foo(char * $restrict_keyword p);
4161 EOF
4162 done
4163
4164 test_cc <<EOF && enable pragma_deprecated
4165 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4166 EOF
4167
4168 test_cc <<EOF || die "endian test failed"
4169 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4170 EOF
4171 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4172
4173 check_gas() {
4174     log "check_gas using '$as' as AS"
4175     # :vararg is used on aarch64, arm and ppc altivec
4176     test_as <<EOF || return 1
4177 .macro m n, y:vararg=0
4178 \n: .int \y
4179 .endm
4180 m x
4181 EOF
4182     # .altmacro is only used in arm asm
4183     ! enabled arm || test_as <<EOF || return 1
4184 .altmacro
4185 EOF
4186     enable gnu_as
4187     return 0
4188 }
4189
4190 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4191     nogas=:
4192     enabled_any arm aarch64 && nogas=die
4193     enabled_all ppc altivec && nogas=warn
4194     as_noop=-v
4195
4196     case $as_type in
4197         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4198         gcc)  gaspp_as_type=gas ;;
4199         *)    gaspp_as_type=$as_type ;;
4200     esac
4201
4202     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4203
4204     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4205         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4206
4207     if ! check_gas ; then
4208         as=${gas:=$as}
4209         check_gas || \
4210             $nogas "GNU assembler not found, install/update gas-preprocessor"
4211     fi
4212
4213     test_as <<EOF && enable as_func
4214 .func test
4215 .endfunc
4216 EOF
4217 fi
4218
4219 check_inline_asm inline_asm_labels '"1:\n"'
4220
4221 if enabled aarch64; then
4222     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4223     # internal assembler in clang 3.3 does not support this instruction
4224     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4225     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4226
4227     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4228
4229 elif enabled alpha; then
4230
4231     check_cflags -mieee
4232
4233 elif enabled arm; then
4234
4235     enabled msvc && test_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4236     test_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4237     enabled thumb && check_cflags -mthumb || check_cflags -marm
4238
4239     if test_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4240         enable vfp_args
4241     elif test_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4242         enable vfp_args
4243     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4244         case "${cross_prefix:-$cc}" in
4245             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4246             *) test_ld <<EOF &&  enable vfp_args && fpabi=vfp || fpabi=soft ;;
4247 __asm__ (".eabi_attribute 28, 1");
4248 int main(void) { return 0; }
4249 EOF
4250         esac
4251         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4252     fi
4253
4254     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4255     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4256     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4257     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4258     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4259     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4260
4261     [ $target_os = linux ] || [ $target_os = android ] ||
4262         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4263             $ARCH_EXT_LIST_ARM
4264
4265     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4266
4267     test_as <<EOF && enable as_arch_directive
4268 .arch armv7-a
4269 EOF
4270     test_as <<EOF && enable as_fpu_directive
4271 .fpu neon
4272 EOF
4273
4274     # llvm's integrated assembler supports .object_arch from llvm 3.5
4275     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4276         test_as <<EOF && enable as_object_arch
4277 .object_arch armv4
4278 EOF
4279
4280     # MS armasm fails to assemble our PIC constructs
4281     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4282
4283 elif enabled mips; then
4284
4285     # make sure that only one instruction set is enabled
4286     disable $ARCH_EXT_LIST_MIPS
4287
4288     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4289
4290     if enabled mips64; then
4291         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4292             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4293                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4294     else
4295         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4296             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4297                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4298     fi
4299
4300 elif enabled parisc; then
4301
4302     if enabled gcc; then
4303         case $($cc -dumpversion) in
4304             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4305         esac
4306     fi
4307
4308 elif enabled ppc; then
4309
4310     enable local_aligned_8 local_aligned_16 local_aligned_32
4311
4312     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4313     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4314     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4315     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4316
4317     if enabled altivec; then
4318         check_cflags -maltivec -mabi=altivec
4319
4320         # check if our compiler supports Motorola AltiVec C API
4321         test_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4322                                 vector signed int v2 = (vector signed int) { 1 };
4323                                 v1 = vec_add(v1, v2);" ||
4324             disable altivec
4325
4326         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4327     fi
4328
4329     if enabled vsx; then
4330         check_cflags -mvsx &&
4331         test_code cc altivec.h "int v[4] = { 0 };
4332                                 vector signed int v1 = vec_vsx_ld(0, v);" ||
4333             disable vsx
4334     fi
4335
4336     if enabled power8; then
4337         test_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4338     fi
4339
4340 elif enabled x86; then
4341
4342     check_builtin rdtsc    intrin.h   "__rdtsc()"
4343     check_builtin mm_empty mmintrin.h "_mm_empty()"
4344
4345     enable local_aligned_8 local_aligned_16 local_aligned_32
4346
4347     # check whether EBP is available on x86
4348     # As 'i' is stored on the stack, this program will crash
4349     # if the base pointer is used to access it because the
4350     # base pointer is cleared in the inline assembly code.
4351     check_exec_crash <<EOF && enable ebp_available
4352 volatile int i=0;
4353 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4354 return i;
4355 EOF
4356
4357     # check whether EBX is available on x86
4358     check_inline_asm ebx_available '""::"b"(0)' &&
4359         check_inline_asm ebx_available '"":::"%ebx"'
4360
4361     # check whether xmm clobbers are supported
4362     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4363
4364     # check whether binutils is new enough to compile SSSE3/MMXEXT
4365     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4366     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4367
4368     probe_x86asm(){
4369         x86asmexe_probe=$1
4370         if test_cmd $x86asmexe_probe -v; then
4371             x86asmexe=$x86asmexe_probe
4372             x86asm_type=nasm
4373             x86asm_debug="-g -F dwarf"
4374             X86ASMDEP=
4375             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4376         elif test_cmd $x86asmexe_probe --version; then
4377             x86asmexe=$x86asmexe_probe
4378             x86asm_type=yasm
4379             x86asm_debug="-g dwarf2"
4380             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4381             X86ASM_DEPFLAGS=
4382         fi
4383         test_x86asm "movbe ecx, [5]" && enable x86asm
4384     }
4385
4386     if ! disabled_any asm mmx x86asm; then
4387         disable x86asm
4388         for program in $x86asmexe nasm yasm; do
4389             probe_x86asm $program && break
4390         done
4391         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4392         X86ASMFLAGS="-f $objformat"
4393         enabled pic               && append X86ASMFLAGS "-DPIC"
4394         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4395         case "$objformat" in
4396             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4397         esac
4398
4399         test_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4400         test_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4401         test_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4402         test_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4403         test_x86asm "CPU amdnop"                      || disable cpunop
4404     fi
4405
4406     case "$cpu" in
4407         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4408             disable fast_clz
4409         ;;
4410     esac
4411
4412 fi
4413
4414 test_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4415
4416 check_ldflags -Wl,--as-needed
4417
4418 if ! disabled network; then
4419     check_func getaddrinfo $network_extralibs
4420     check_func inet_aton $network_extralibs
4421
4422     check_type netdb.h "struct addrinfo"
4423     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4424     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4425     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4426     check_type poll.h "struct pollfd"
4427     check_type netinet/sctp.h "struct sctp_event_subscribe"
4428     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4429     check_type netinet/in.h "struct sockaddr_in6"
4430     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4431     check_type "sys/types.h sys/socket.h" socklen_t
4432
4433     # Prefer arpa/inet.h over winsock2
4434     if check_header arpa/inet.h ; then
4435         check_func closesocket
4436     elif check_header winsock2.h ; then
4437         check_func_headers winsock2.h closesocket -lws2 &&
4438             network_extralibs="-lws2" ||
4439         { check_func_headers winsock2.h closesocket -lws2_32 &&
4440             network_extralibs="-lws2_32"; } || disable winsock2_h network
4441         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4442
4443         check_type ws2tcpip.h socklen_t
4444         check_type ws2tcpip.h "struct addrinfo"
4445         check_type ws2tcpip.h "struct group_source_req"
4446         check_type ws2tcpip.h "struct ip_mreq_source"
4447         check_type ws2tcpip.h "struct ipv6_mreq"
4448         check_type winsock2.h "struct pollfd"
4449         check_struct winsock2.h "struct sockaddr" sa_len
4450         check_type ws2tcpip.h "struct sockaddr_in6"
4451         check_type ws2tcpip.h "struct sockaddr_storage"
4452     else
4453         disable network
4454     fi
4455 fi
4456
4457 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4458 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4459 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4460 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4461
4462 case "$custom_allocator" in
4463     jemalloc)
4464         # jemalloc by default does not use a prefix
4465         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4466     ;;
4467     tcmalloc)
4468         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4469         malloc_prefix=tc_
4470     ;;
4471 esac
4472
4473 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4474 check_func  ${malloc_prefix}memalign            && enable memalign
4475 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4476
4477 test_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4478     { check_lib clock_gettime time.h clock_gettime ||
4479       check_lib clock_gettime time.h clock_gettime -lrt; }
4480
4481 check_func  fcntl
4482 check_func  gethrtime
4483 check_func  getopt
4484 check_func  getrusage
4485 check_func  gettimeofday
4486 check_func  gmtime_r
4487 check_func  isatty
4488 check_func  localtime_r
4489 check_func  mkstemp
4490 check_func  mmap
4491 check_func  mprotect
4492 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4493 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4494 check_func  sched_getaffinity
4495 check_func  setrlimit
4496 check_func  strerror_r
4497 check_func  sysconf
4498 check_func  sysctl
4499 check_func  usleep
4500
4501 check_func_headers io.h setmode
4502 check_func_headers mach/mach_time.h mach_absolute_time
4503 check_func_headers stdlib.h getenv
4504
4505 check_func_headers windows.h GetProcessAffinityMask
4506 check_func_headers windows.h GetProcessTimes
4507 check_func_headers windows.h GetSystemTimeAsFileTime
4508 check_func_headers windows.h LoadLibrary
4509 check_func_headers windows.h MapViewOfFile
4510 check_func_headers windows.h SetConsoleTextAttribute
4511 check_func_headers windows.h Sleep
4512 check_func_headers windows.h VirtualAlloc
4513 check_struct windows.h "CONDITION_VARIABLE" Ptr
4514
4515 check_header direct.h
4516 check_header dxgidebug.h
4517 check_header dxva.h
4518 check_header dxva2api.h
4519 check_header io.h
4520 check_header malloc.h
4521 check_header poll.h
4522 check_header sys/param.h
4523 check_header sys/resource.h
4524 check_header sys/select.h
4525 check_header sys/time.h
4526 check_header sys/un.h
4527 check_header unistd.h
4528 check_header valgrind/valgrind.h
4529 check_header VideoDecodeAcceleration/VDADecoder.h
4530 check_header windows.h
4531
4532 # it seems there are versions of clang in some distros that try to use the
4533 # gcc headers, which explodes for stdatomic
4534 # so we also check that atomics actually work here
4535 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4536
4537 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4538 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4539 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4540 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4541
4542 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4543
4544 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4545 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4546 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4547
4548 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4549 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4550 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4551
4552 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4553 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4554 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4555 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4556 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4557 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4558 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4559 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4560 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4561
4562 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4563
4564 if ! disabled w32threads && ! enabled pthreads; then
4565     check_lib w32threads "windows.h process.h" _beginthreadex
4566 fi
4567
4568 # check for some common methods of building with pthread support
4569 # do this before the optional library checks as some of them require pthreads
4570 if ! disabled pthreads && ! enabled w32threads; then
4571     if check_lib pthreads pthread.h pthread_join -pthread; then
4572         add_cflags -pthread
4573     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4574         add_cflags -pthreads
4575     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4576         :
4577     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4578         :
4579     elif check_func pthread_join; then
4580         enable pthreads
4581     fi
4582     enabled pthreads &&
4583         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4584 fi
4585
4586 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4587 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4588
4589 # On some systems dynamic loading requires no extra linker flags
4590 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4591
4592 check_lib libm math.h sin -lm
4593
4594 atan2f_args=2
4595 ldexpf_args=2
4596 powf_args=2
4597
4598 for func in $MATH_FUNCS; do
4599     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4600 done
4601
4602 # these are off by default, so fail if requested and not available
4603 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"
4604 enabled avisynth          && require_header avisynth/avisynth_c.h
4605 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4606 enabled cuda              && require cuda cuda.h cuInit -lcuda
4607 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4608 enabled frei0r            && require_header frei0r.h
4609 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4610                              check_lib gmp gmp.h mpz_export -lgmp
4611 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4612 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4613 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4614 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4615 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4616 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4617 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4618 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4619 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4620 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4621 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4622 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4623 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4624 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4625 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4626 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4627 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4628 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4629 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4630                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4631 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4632 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4633 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4634 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4635 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4636 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4637 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4638 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4639 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4640 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4641 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4642 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4643                              { enabled libvpx_vp8_decoder &&
4644                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4645                                enabled libvpx_vp8_encoder &&
4646                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4647                                enabled libvpx_vp9_decoder &&
4648                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4649                                enabled libvpx_vp9_encoder &&
4650                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4651                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4652                                    die "libvpx enabled but no supported decoders/encoders found"
4653                              }
4654 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4655 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4656 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4657                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4658                              { test_cpp_condition x264.h "X264_MPEG2" &&
4659                                enable libx262; }
4660 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4661                              require_cpp_condition x265.h "X265_BUILD >= 57"
4662 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4663 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4664 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4665                                { ! enabled cross_compile &&
4666                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4667                                  add_ldflags -L/opt/vc/lib/ &&
4668                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4669                                die "ERROR: mmal not found" &&
4670                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4671 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4672 enabled omx               && require_header OMX_Core.h
4673 enabled omx_rpi           && { check_header OMX_Core.h ||
4674                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4675                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4676 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4677                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4678                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4679                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4680                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4681                                die "ERROR: openssl not found"; }
4682
4683 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4684 enabled avplay &&
4685     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4686
4687 check_header linux/fb.h
4688 check_header linux/videodev2.h
4689 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4690
4691 check_header AVFoundation/AVFoundation.h
4692
4693 check_header sys/videoio.h
4694
4695 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4696 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4697 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4698 # w32api 3.12 had it defined wrong
4699 test_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4700
4701 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4702 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4703     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4704     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4705     check_header "dev/ic/bt8xx.h"
4706
4707 check_header sys/soundcard.h
4708
4709 enabled alsa_indev &&
4710     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4711
4712 enabled libjack &&
4713     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4714
4715 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4716
4717 if enabled libcdio; then
4718     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4719     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4720     die "ERROR: No usable libcdio/cdparanoia found"
4721 fi
4722
4723 if enabled libxcb; then
4724     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4725     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4726     disabled libxcb_shm ||
4727         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4728     disabled libxcb_xfixes ||
4729         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4730 fi
4731
4732 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4733 # the desktop api partition
4734 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4735 #ifdef WINAPI_FAMILY
4736 #include <winapifamily.h>
4737 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4738 #error desktop, not uwp
4739 #else
4740 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4741 #endif
4742 #else
4743 #error no family set
4744 #endif
4745 EOF
4746
4747 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4748
4749 enabled vaapi &&
4750     test_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4751     disable vaapi
4752
4753 enabled vaapi &&
4754     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4755
4756 enabled vaapi &&
4757     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4758
4759 enabled vaapi &&
4760     test_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4761     enable vaapi_1
4762
4763 enabled vdpau &&
4764     test_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4765     disable vdpau
4766
4767 enabled vdpau &&
4768     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4769
4770 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4771
4772 # add some useful compiler flags if supported
4773 check_cflags -Wdeclaration-after-statement
4774 check_cflags -Wall
4775 check_cflags -Wdisabled-optimization
4776 check_cflags -Wpointer-arith
4777 check_cflags -Wredundant-decls
4778 check_cflags -Wwrite-strings
4779 check_cflags -Wtype-limits
4780 check_cflags -Wundef
4781 check_cflags -Wmissing-prototypes
4782 check_cflags -Wstrict-prototypes
4783
4784 if enabled extra_warnings; then
4785     check_cflags -Wcast-qual
4786     check_cflags -Wextra
4787     check_cflags -Wpedantic
4788 fi
4789
4790 check_disable_warning(){
4791     warning_flag=-W${1#-Wno-}
4792     test_cflags $warning_flag && add_cflags $1
4793 }
4794
4795 check_disable_warning -Wno-parentheses
4796 check_disable_warning -Wno-switch
4797 check_disable_warning -Wno-format-zero-length
4798 check_disable_warning -Wno-pointer-sign
4799
4800 check_disable_warning_headers(){
4801     warning_flag=-W${1#-Wno-}
4802     test_cflags $warning_flag && add_cflags_headers $1
4803 }
4804
4805 check_disable_warning_headers -Wno-deprecated-declarations
4806 check_disable_warning_headers -Wno-unused-variable
4807
4808 check_objcflags -fobjc-arc && enable objc_arc
4809
4810 test_cc <<EOF && enable blocks_extension
4811 void (^block)(void);
4812 EOF
4813
4814 # add some linker flags
4815 check_ldflags -Wl,--warn-common
4816 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4817 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4818 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4819
4820 # add some strip flags
4821 # -wN '..@*' is more selective than -x, but not available everywhere.
4822 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4823
4824 enabled neon_clobber_test &&
4825     check_ldflags -Wl,--wrap,avcodec_open2              \
4826                   -Wl,--wrap,avcodec_decode_audio4      \
4827                   -Wl,--wrap,avcodec_decode_video2      \
4828                   -Wl,--wrap,avcodec_decode_subtitle2   \
4829                   -Wl,--wrap,avcodec_encode_audio2      \
4830                   -Wl,--wrap,avcodec_encode_video2      \
4831                   -Wl,--wrap,avcodec_encode_subtitle    \
4832                   -Wl,--wrap,avcodec_send_packet        \
4833        &nb